A method is provided for controlling a heating, ventilation, and air conditioning (HVAC) system. The method includes measuring a temperature and controlling a compressor of the HVAC system. The temperature is measured by a temperature sensor located between a metering device of the HVAC system and an evaporator coil of the HVAC system. The temperature is representative of a refrigerant temperature. The refrigerant temperature is a temperature of a refrigerant fluid flowing from the metering device to the evaporator coil. The compressor is controlled by control circuitry that is configured to perform the controlling in a dehumidify mode based, at least in part, on a value of a humidity parameter of air of an airflow through an evaporator coil and a reheat coil, where the value is determined using the temperature.
Methods and systems for passive cooling and sanitization are provided. The system includes a roof positioned to provide a shielding to the conditioned space underneath the roof, and a radiative film disposed on an upper surface of the roof and configured to provide radiative cooling to the conditioned space. In some cases, one or more platforms are positioned below the roof to define the conditioned space. A positioning mechanism is used to move at least one of the roof and the one or more platforms upward and downward between an open position and a closed position to adjust a height of the conditioned space.
A47F 3/04 - Vitrines ou meubles d'exposition à air conditionné ou réfrigéré
A47F 3/06 - Vitrines ou meubles d'exposition à étagères mobiles ou amovibles
F25B 23/00 - Machines, installations ou systèmes ayant un seul principe de fonctionnement non compris dans les groupes , p.ex. utilisant l'effet de radiation sélective
F28F 13/18 - Dispositions pour modifier le transfert de chaleur, p.ex. accroissement, diminution par application d'un traitement de surface, p.ex. un polissage
An energy generation system for converting combustible fluid from a nontraditional combustible fluid source to useable energy. The energy generation system including a fluid storage system including a compressor and at least one storage tank, the compressor configured to pressurize a combustible fluid from a combustible fluid source for storage in the one or more storage tanks; and an energy recovery system configured to receive the combustible fluid from the at least one storage tank, the energy recovery system including: a turboexpander configured to depressurize the combustible fluid received from the at least one storage tank; a motor-generator configured to input the combustible fluid as depressurized by the turboexpander, and generate electrical energy from the combustible fluid; and an organic Rankine cycle (ORC) system configured to generate electrical energy based on a temperature differential between the combustible fluid input to the motor-generator and a waste heat produced by the motor-generator.
F01K 23/06 - Ensembles fonctionnels caractérisés par plus d'une machine motrice fournissant de l'énergie à l'extérieur de l'ensemble, ces machines motrices étant entraînées par des fluides différents les cycles de ces machines motrices étant couplés thermiquement la chaleur de combustion provenant de l'un des cycles chauffant le fluide dans un autre cycle
F01K 25/10 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs utilisant des vapeurs particulières ces vapeurs étant froides, p.ex. ammoniac, gaz carbonique, éther
F17C 7/00 - Procédés ou appareils pour vider les gaz liquéfiés, solidifiés ou comprimés contenus dans des récipients sous pression, non couverts par une autre sous-classe
4.
SCROLL COMPRESSOR WITH ENGINEERED SHARED COMMUNICATION PORT
An asymmetric scroll compressor includes a compressor housing. An orbiting scroll member and a non-orbiting scroll member disposed within the compressor housing. The orbiting scroll member and the non-orbiting scroll member each includes a baseplate and a wrap extending from the baseplate. The orbiting scroll member and the non-orbiting scroll member intermeshed to form a plurality of compression pockets. A driveshaft affixed to the orbiting scroll member and configured to orbit the orbiting scroll member from a first orbital position to a second orbital position. A communication port disposed on the baseplate of one of the orbiting scroll member and the non-orbiting scroll such that: in the first orbital position, the communication port communicates with a first enclosed pocket of the plurality of compression pockets, and in the second orbital position, the communication port communicates with a second enclosed pocket of the plurality of compression pockets.
F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
F04C 29/12 - Dispositions pour l'admission ou l'échappement du fluide de travail, p.ex. caractéristiques de structure de l'admission ou de l'échappement
5.
SUPPLYING AC ELECTRICITY FROM A PHOTOVOLTAIC SYSTEM WITHOUT AN ELECTRONIC POWER INVERTER
A method is provided for supplying alternating cunent (AC) electricity. The method includes receiving direct current (DC) electricity from a source of electric power at a motorized pump, and converting the DC electricity from the source of electric power to AC electricity. This includes converting the DC electricity to first motive power at the motorized pump to move water from a source location to at least one supply location. The water is supplied from the at least one supply location to a turbine, and kinetic energy of the water is converted to second motive power at the turbine. The second motive power is converted to the AC electricity at an electric generator that is connected to the turbine, and the AC electricity is supplied from the electric generator.
The technologies described and recited herein pertain to a permanent magnet motor having multiple voltage taps so that the motor may run in multiple configurations, e.g., a low-range and a high-range, and have multiple optimal operating points.
H02P 13/06 - Dispositions de commande de transformateurs, réactances ou bobines d'arrêt de façon à obtenir les caractéristiques désirées à la sortie par modification des connexions des enroulements
H02P 25/18 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de moteur ou par des détails de structure caractérisés par des dispositions de circuit ou par le type de câblage avec des dispositions pour la commutation des enroulements, p.ex. par des interrupteurs mécaniques ou des relais
H02P 27/04 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs
H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
H02K 19/12 - Moteurs synchrones pour courant polyphasé caractérisés par la disposition des enroulements d'excitation, p.ex. pour auto-excitation, compoundage ou changement du nombre de pôles
F04D 17/10 - Pompes centrifuges pour la compression ou l'épuisement
F04B 17/03 - Pompes caractérisées par leur combinaison avec des machines motrices ou moteurs particuliers qui les entraînent ou par leur adaptation à ceux-ci entraînées par des moteurs électriques
7.
DEHUMIDIFYING AIR HANDLING UNIT AND DESSICANT WHEEL THEREFOR
A dehumidifying air handling unit for an HVACR system includes a housing, a desiccant wheel, and a cooling heat exchanger. A main airflow path extending through the housing from an air inlet to and air discharged outlet of the housing. The desiccant wheel includes a first end and a second end that are each disposed in the main airflow path and a metal organic framework desiccant that is moved between the first end and the second end. A desiccant wheel includes a metal organic framework desiccant disposed on a surface of the desiccant wheel. Rotation of the desiccant wheel moves a position of the surface between a first end and a second end of the desiccant wheel. The metal organic framework desiccant has a majority absorption-desorption operating band of 25% relative humidity or less.
F24F 3/14 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaire; Appareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par déshumidification
F24F 3/147 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaire; Appareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par déshumidification avec transfert à la fois de chaleur et d'humidité entre l'air fourni et l'air expulsé
A method is provided for controlling electrical load on a power grid from a load facility using demand response. The method includes accessing memory storing computer-readable program code for decision analysis of a specified time interval for a demand-response (DR) event. The method also includes executing the computer-readable program code, via a processor, to cause an apparatus to at least make a decision to participate in or opt out of the DR event. This includes the apparatus receiving values of variables that describe occupancy and usage of the load facility for one or more time intervals. The apparatus applies the values to an algorithm that maps the variables to a decision to participate in or opt out of the DR event for the specified time interval. And the apparatus automatically notifies an operator responsible for the DR event of the decision at least when the decision is to opt out.
H02J 3/14 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par interruption, ou mise en circuit, des charges du réseau, p.ex. charge équilibrée progressivement
H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p.ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseau; Circuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p.ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
Multiple air handling units feeding into a common air distribution system are used to provide both latent and sensible temperature control. When dehumidification without sensible cooling is required, different air handling units feeding into a common distribution system may be operated in different modes so that both cooling and reheating are occurring simultaneously. The result is an energy efficient means of controlling both ambient air temperature and relative humidity. Air handling units such as water source heat pumps and variable refrigerant flow (VRF) units may be employed.
F24F 3/14 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaire; Appareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par déshumidification
F24F 11/65 - Traitement électronique pour la sélection d'un mode de fonctionnement
F24F 11/70 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes
F24F 11/85 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’apport en fluides échangeurs de chaleur aux échangeurs de chaleur au moyen de pompes à débit variable
A01G 9/24 - Dispositifs de chauffage, d'aération, de régulation de la température ou d'irrigation dans les serres, les châssis ou les installations similaires
Architectures or techniques are presented that can improve operation of permanent magnet (PM) motors, which can be part of a compressor or other heating, ventilation, and air conditioning (HVAC) device. Such improvements can be achieved by integration of inductive filtering into the motor assembly. A higher overall inductance can reduce current ripple and can further result in a lower total harmonic distortion, reduced power loss, and reduced heat generated. For example a first architecture can include a ferromagnetic core element in the PM motor that can cause a non-torque-producing reluctance path to the shaft. A second architecture can integrate a signal filter, which is customarily external, into a housing of the PM motor. Such can significant reduce costs and provide other advantages. A third architecture can couple an inductor (e.g., of the signal filter) to the shaft. Rotation of the shaft can thus serve to provide additional cooling for the inductor.
H02K 29/03 - Moteurs ou génératrices à dispositifs de commutation non mécaniques, p.ex. tubes à décharge ou dispositifs à semi-conducteurs avec un circuit magnétique spécialement adapté pour éviter des ondulations du couple ou des problèmes de démarrage autonome
H02K 1/27 - Noyaux rotoriques à aimants permanents
H02K 7/14 - Association structurelle à des charges mécaniques, p.ex. à des machines-outils portatives ou des ventilateurs
H02K 21/14 - Moteurs synchrones à aimants permanents; Génératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants avec des aimants tournant à l'intérieur des induits
H02K 1/06 - MACHINES DYNAMO-ÉLECTRIQUES - Détails du circuit magnétique caractérisés par la configuration, la forme ou le genre de structure
A heat transfer circuit includes a compressor, a condenser, an expander, and an evaporator. The compressor includes a shaft that is rotated to compress a working fluid and a gas bearing to support the shaft. A conduit is configured to supply a portion of the working fluid to the compressor to cool the gas bearing. A method of controlling a heat transfer circuit includes directing a working fluid through a main flow path of the heat transfer circuit that directs the working fluid through a compressor, a condenser, an expander, an evaporator, and back to the compressor. The method also includes suppling supplying a portion of the working fluid in the main flow path to the compressor to cool a gas bearing of the compressor.
A compressor includes a housing, a shaft that is rotated relative to the housing to compress a working fluid, and a foil bearing that supports the shaft. The foil bearing includes a top foil. The foil bearing is a foil gas bearing that is backed up by a ball bearing, or a mesh foil bearing with an actuator to compress a wire mesh dampener. A heat transfer circuit includes a compressor and a working fluid. The compressor includes a shaft that is rotated to compress the working fluid, and a foil bearing for supporting the shaft as it rotates.
Systems and methods for lubricant management of a compressor in an HVACR system are disclosed. A heat transfer circuit can utilize a working fluid to provide heating or cooling includes a compressor for compressing the working fluid and a heat source configured to increase a suction temperature of the working fluid entering the compressor. One or more lubricant rheological properties in a compressor system based on measurements taken at or near a bearing cavity of the compressor are determinable. A lubricant reservoir can be in thermal communication with a discharge flow path of the compressor. An internal heat exchanger can be disposed within a compressor for improving viscosity of the lubricant to be cycled back into the compressor. A heater can be located on a fluid line between a lubricant separator and a lubricant inlet. Condenser fans can be controlled.
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
Inventeur(s)
Zhou, Longmei
Hendley, Bartley
Dees, Daniel A.
Ley, Thomas A.
Gamache, Zach M.
Wu, Mingxun
Abrégé
An air handling unit comprises a cabinet (10), heat exchangers (25, 27) and a blower (30). The cabinet (10) has an air inlet opening (115) and an air outlet opening (116), panels are provided on sides of the cabinet (10) forming an air flow path for air flowing through the air handling unit between the air inlet opening (115) and the air outlet opening (116). The heat exchangers (25, 27) are disposed in the air flow path and adapted to conduct heat exchange between air passing through the air flow path and a working medium flowing in the heat exchangers (25, 27). The heat exchangers (25, 27) include inlet headers (251, 253) for supplying the working medium and outlet headers (271, 273) for collecting the working medium. The heat exchangers (25, 27) are slanted with respect to a side of the cabinet (10) such that the inlet headers (251, 253) and the outlet headers (271, 273) extend through one of the sides of the cabinet (10) providing access to the inlet headers (251, 253) and the outlet headers (271, 273) from the one of the sides of the cabinet (10). The blower (30) is vertically disposed relative to the heat exchangers (25, 27) in the cabinet (10) for forcing air to flow through the air flow path.
F24F 1/00 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale
F24F 3/00 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaire; Appareillage spécialement conçu pour de tels systèmes
F24F 13/30 - Agencement ou montage d'échangeurs de chaleur
A scroll compressor lubrication system and a scroll compressor are disclosed. The scroll compressor includes a capacity modulator, a lubricant opening, and a gas diverting passage. The capacity modulator is in fluid communication with compression pockets for selectively unloading gas from the pockets. The lubricant opening is in fluid communication with at least one bearing portion of the scroll compressor. Lubricant from the at least one bearing portion in the scroll compressor flows through the lubricant opening. The gas diverting passage includes an inlet and an outlet. The inlet of the gas diverting passage is in fluid communication with the capacity modulator, and the gas diverting passage extends below the lubricant opening such that gas from the outlet of the gas diverting passage can flow through a travel path of the lubricant that flows through the lubricant opening and entrains at least part of the lubricant to at least one bearing portion for lubrication.
F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
F04C 29/02 - Lubrification; Séparation du lubrifiant
F04C 28/10 - Commande, surveillance ou dispositions de sécurité pour les pompes ou les installations de pompage spécialement adaptées pour les fluides compressibles caractérisées par la modification des positions de l'ouverture de l'admission ou de l'échappement par rapport à la chambre de travail
F04C 29/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT; POMPES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes
F04C 27/00 - Systèmes d'étanchéité dans les pompes à piston rotatif spécialement adaptées pour les fluides compressibles
A scroll compressor and methods of assembling the scroll compressor are disclosed. The scroll compressor includes a frame aligned about a longitudinal axis of the scroll compressor, the frame including a plurality of extensions extending radially from the longitudinal axis, the plurality of extensions including axially extending frame interlock mechanisms. A fixed scroll support is aligned about the longitudinal axis, the fixed scroll support including a plurality of extensions extending radially from the longitudinal axis, the plurality of extensions including axially extending fixed scroll support interlock mechanisms configured to engage the frame interlock mechanisms upon radial rotation. A fixed scroll wrap is integral with or attached to the fixed scroll support.
F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
F04B 39/14 - Dispositions permettant un montage ou démontage commodes
F04B 35/04 - Pompes à piston spécialement adaptées aux fluides compressibles et caractérisées par les moyens d'entraînement de leurs organes de travail ou par leur combinaison avec les machines motrices ou moteurs qui les entraînent ou bien par leurs adaptations les moyens étant électriques
17.
USING HEAT RECOVERED FROM HEAT SOURCE TO OBTAIN HIGH TEMPERATURE HOT WATER
Heat is recovered from a heat source to heat water to high temperatures. Apparatuses, systems and methods are described to heat water to a high temperature by using heat, such as may be considered in some instances as waste heat, recovered from a heat source. The methods, systems, and apparatuses described utilize low pressure refrigerant(s) as a fluid to provide a refrigeration cycle that utilizes a source of heat to heat water to a high temperature. The refrigeration cycle can be with or without a cascade cycle. The refrigerant cycle in some examples uses an oil free compressor.
F25B 7/00 - Machines, installations ou systèmes à compression fonctionnant en cascade, c. à d. avec plusieurs circuits, l'évaporateur d'un circuit refroidissant le condenseur du circuit suivant
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
C09K 5/04 - Substances qui subissent un changement d'état physique lors de leur utilisation le changement d'état se faisant par passage de l'état liquide à l'état vapeur ou vice versa
F25B 27/02 - Machines, installations ou systèmes utilisant des sources d'énergie particulières utilisant la chaleur perdue, p.ex. chaleur dégagée par des moteurs à combustion interne
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Rong, Guangwei
Duan, Pingsen, Andy
Yang, Qing, Aaron
Han, Weifeng, Sam
Abrégé
A fixing device (500, 600) includes a gasket (300) and a clip (400). The clip (400) includes a clip upper portion (405), a clip body portion (409), and a clip leg portion (430). The clip upper portion (405) has a width wider than the clip body portion (409) and the clip leg portion (430). The clip upper portion (405), the clip body portion (409), and the clip leg portion (430) are connected to form an open loop facing downward. The gasket (300) includes a gasket upper portion (305), a gasket intermediate portion (310), and a gasket base portion (315) forming an "A" shape. The gasket (300) is compressible. The clip upper portion (405) and the clip body portion (409) define two receiving areas (411) evenly distributed at two inner sides of the clip. The gasket (300) is evenly and simultaneously compressed toward the two receiving areas (411) of the clip while the clip moves downward without tilting or slanting.
An intermediate discharge port in a scroll compressor and a method for controlling part- load efficiency of a scroll compressor are disclosed. The compressor includes a compressor housing; a non-orbiting scroll member and an orbiting scroll member forming a compression chamber; a discharge port for receiving a compressed fluid; and an intermediate discharge port fluidly connected between the compression chamber and the discharge port, the intermediate discharge port including a sealing member, fluid flow being prevented between the compression chamber and the discharge port through the intermediate discharge port when in a flow-blocked state, and fluid flow being enabled between the compression chamber and the discharge port through the intermediate discharge port when in a flow-permitted state.
F04C 29/12 - Dispositions pour l'admission ou l'échappement du fluide de travail, p.ex. caractéristiques de structure de l'admission ou de l'échappement
F04C 29/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT; POMPES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes
F04C 23/00 - Combinaisons de plusieurs pompes, chacune étant du type à piston rotatif ou oscillant spécialement adaptées pour les fluides compressibles; Installations de pompage spécialement adaptées pour les fluides compressibles; Pompes multiétagées spécialement adaptées pour les fluides compressibles
F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
F04C 19/00 - Pompes à piston rotatif avec anneau fluide ou dispositif analogue spécialement adaptés pour les fluides compressibles
F25B 1/04 - Machines, installations ou systèmes à compression à cycle irréversible à compresseur rotatif
Methods, systems and apparatuses are described that are directed to on-site recovery and/or repurposing of refrigerant, where an original refrigerant is converted into a refrigerant different from the original refrigerant. The refrigerant different from the original refrigerant can have relatively lower global warming potential (GWP) than the original refrigerant. The recovery and/or repurposing can be implemented for example in a refrigeration circuit, such as for example in general cooling and/or heating applications, which may be embodied in a heating, venting, and air conditioning (HVAC) system and/or unit, in a transport refrigeration system and/or unit, as well as in commercial, residential and/or industrial cooling and/or heating applications.
F25B 45/00 - Dispositions pour l'introduction ou l'évacuation du frigorigène
F25B 43/00 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur
A chiller plant including at least two chillers operating at different temperatures are disclosed. Process fluid circuits of the chillers can form fluid communication when, for example, one or more of the at least two chillers may fail, so that the other chiller(s) of the at least two chillers may provide backup operation to the failed chiller(s).
F25B 49/00 - Disposition ou montage des dispositifs de commande ou de sécurité
F24F 11/00 - Aménagements de commande ou de sécurité
F24F 11/053 - par des moyens sensibles à la température
F24F 1/00 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale
A bearing housing drain in a scroll compressor and method for controlling lubrication of a thrust bearing in the scroll compressor are disclosed. The compressor includes a compressor housing; a non-orbiting scroll member and an orbiting scroll member; an orbiting scroll hub having an upper end and a lower end, the lower end being disposed at a vertical elevation that is lower than the upper end; a thrust bearing; a lubricant sump; a housing drain cavity disposed within the compressor housing and configured to receive lubricant from the lubricant sump and to deliver the lubricant to the thrust bearing; and a bearing housing drain fluidly connected to the housing drain cavity and the lubricant sump.
F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
F04C 29/02 - Lubrification; Séparation du lubrifiant
A heat exchanger, such as for example, a condenser coil constructed as a fin and microchannel tube is fluidly connected with a volume constructed and configured to store refrigerant in certain operations, such as for example during a pump down operation. The volume is fluidly connected to a fluid port of the heat exchanger, where the fluid port is an inlet (in the cooling mode) to the heat exchanger, such as the high side condensing section of the heat exchanger. The volume receives refrigerant exiting the heat exchanger from the fluid port in a mode other than a cooling mode, e.g., a pump down operation.
F25B 45/00 - Dispositions pour l'introduction ou l'évacuation du frigorigène
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F28F 1/02 - Eléments tubulaires de section transversale non circulaire
F28F 1/12 - Eléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p.ex. avec des ailettes, avec des saillies, avec des évidements ces moyens étant uniquement à l'extérieur de l'élément tubulaire
F25B 13/00 - Machines, installations ou systèmes à compression, à cycle réversible
24.
HEAT RECOVERY SYSTEM WITH LIQUID SEPARATOR APPLICATION
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Du, Yu Qing
Abrégé
A heat recovery system and a method of fluid flow therethrough. A liquid separator (6) of the system separates the liquid and vapor from fluid exiting the heat recovery exchanger (10), so that the inlet of the condenser coil (3) is sourced with vapor and liquid amount entering the coil (3) is minimized. A flow control device (4, 9) can control the capacity of the heat recovery system.
F25B 29/00 - Systèmes de chauffage et de refroidissement combinés, p.ex. fonctionnant alternativement ou simultanément
25.
IMPROVING GLIDE IN REFRIGERANT BLENDS AND/OR AZEOTOPIC BLENDS, ALTERNATIVES TO R123 REFRIGERANT, AND REFRIGERANT COMPOSITIONS, METHODS, AND SYSTEMS THEREOF
Methods of using refrigerant compositions and systems thereof are described. In particular, methods of using refrigerant compositions and systems thereof, include refrigerant compositions including a two component blend. One of the components is a refrigerant blend that, when first combined, is considered an azeotropic blend, azeotrope, near azeotropic, or the like. This component is one component of the two components of the resulting refrigerant composition, which is combined with a second component being another refrigerant.
F25B 15/00 - Machines, installations ou systèmes à sorption, à marche continue, p.ex. à absorption
C09K 5/04 - Substances qui subissent un changement d'état physique lors de leur utilisation le changement d'état se faisant par passage de l'état liquide à l'état vapeur ou vice versa
A compressor includes a housing defining a working chamber. The housing further includes a bore and an endplate disposed toward a discharge end. The compressor further includes a rotor having helical threads, the rotor being configured to be housed in the bore, a rotor clearance, a controllable bearing supporting the rotor, and a controller configured to control the controllable bearing such that the controllable bearing moves the rotor in a manner to reduce and/or enlarge the rotor clearance.
F04C 18/16 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement extérieur, c. à d. avec un engagement des organes coopérants semblable à celui d'engrenages dentés d'un autre type qu'à axe interne avec des pistons rotatifs dentés à dents hélicoïdales, p.ex. du type ayant la forme d'un chevron, du type à vis
F04C 29/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT; POMPES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes
A cyclonic type lubricant separator with various features that reduces pressure losses, manages local gas velocities which may contribute to entrainment of liquid(s) (e.g. oil), maintains and/or improves oil separation (e.g. achieving lower oil circulation rates), reduces the size of the lubricant separator, and/or reduces or minimizes costs of production. Lubricant separators herein include a shell, a fluid inlet, a vapor outlet, a liquid outlet, and a discharge tube within the shell. Lubricant separators herein include multiple inlets that have openings such that the discharge tube is out of sight relative to the openings of the inlet, include openings along the length of the discharge tube, and/or include a flow director on the discharge tube, where the flow director includes a surface that extend away from the outer dimension of the discharge tube.
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
F25B 45/00 - Dispositions pour l'introduction ou l'évacuation du frigorigène
F25J 3/00 - Procédés ou appareils pour séparer les constituants des mélanges gazeux impliquant l'emploi d'une liquéfaction ou d'une solidification
F25J 3/02 - Procédés ou appareils pour séparer les constituants des mélanges gazeux impliquant l'emploi d'une liquéfaction ou d'une solidification par rectification, c. à d. par échange continuel de chaleur et de matière entre un courant de vapeur et un courant de liquide
HVAC components having improved efficiency are described. In one embodiment, excessive sleep current draw in a battery-powered device having a microcontroller is detected by measuring a voltage drop across a MOSFET device coupled in a forward-conducting orientation in series between the battery and the microcontroller, causing a transistor to conduct when the voltage drop exceeds a predetermined threshold to generate a first trigger signal, integrating the first trigger signal to generate a second trigger signal, and generating an interrupt to the microcontroller. In another embodiment, a battery-saving method of operating an HVAC component includes maintaining the HVAC device in the sleep mode, receiving a user input to wake the device, transmitting a data request and returning the HVAC component to the sleep mode, waking up the HVAC device to poll an adjacent network node storing a cached response, displaying the response, and returning the HVAC device to sleep.
H02H 3/08 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge
G01R 19/00 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe
G01R 19/02 - Mesure des valeurs efficaces, c. à d. des valeurs moyennes quadratiques
G01R 19/15 - Indication de l'existence d'un courant
G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée
Embodiments as disclosed herein are directed to a heat pump that employs at least two different refrigerants, each of which is optimized for either a cooling operation mode or a heating operation mode. The embodiments as disclosed herein can help increase the capacity and/or efficiency of a heat pump in both the cooling operation mode and the heating operation mode. In addition, the embodiments as disclosed herein may also eliminate the need for a ground source in a relatively low ambient temperature environment.
Systems and methods for provisioning a component of an HVAC system are presented. A provisioning device, such as a smartphone, is used to scan HVAC component information obtained from a tag on each component and wirelessly transfers the information to a thermostat or HVAC system controller. The thermostat or system controller automatically configures itself to control the equipment based on the details in the tag which are transmitted to the thermostat. The label may include barcode or textual information, which is decoded by software executing in the provisioning device, the thermostat, or a server computer in communication with the provisioning device or the thermostat. In embodiments, the HVAC component information is transmitted to a web services application to facilitate the installation, support, maintenance, and repair of the HVAC system.
Apparatus, systems and methods for ascertaining the occupancy of a building are presented. The building is divided into one or more control zones which correspond to physical areas of the building associated with controllable modules, such as HVAC units, lighting, irrigation, or other environmental features such as fountains, music, video, and the like. Zone parameters define how zone devices shall react to the number of occupants located in the particular zone. A building control system detects individual mobile devices in and around the building, and determines the locations of each device by using trilateration and/or location services. The identified mobile devices act as proxies for building occupants. The locations of these devices are correlated with the locations of the zones in the building, and the building control system then adjusts the operating parameters of the zone based on the number of devices present in the zone.
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Du, Yuqing, Terry
Wang, Jun, Jim
Xu, Liang
Du, Mingxun, Max
Abrégé
A temperature regulating system (100) includes a fluid circuit including fluidly connected components. The fluid circuit includes a first and second temperature regulator (105, 115), a first and second flow control device (110, 120), a fluid input (101), and a fluid output (102). The temperature regulating system (100) has the flexibility to position flow control devices (110, 120) such that the temperature regulators (105, 115) can be in parallel flow, serial flow, or combinations thereof.
F25B 5/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p.ex. pour faire varier la puissance frigorifique
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Di, Yibo
Sun, Weiliang
Jin, Jie
Abrégé
A fan housing (10), comprising: an air intake volute housing (11) for air intake, a hollow wheel unit (14) provided at the center of the air intake volute housing (11), and a diffusion tube (12) connected to the air intake volute housing (11) and used for air outflow; and at least the width of the air intake volute housing (11) in the fan housing (10) is continuously variable. Compared to an air conditioning indoor unit employing a traditional fan housing, the air conditioning indoor unit employing said fan housing (10) effectively reduces rotational speed of the fan and noise.
Compositions and methods are described for reducing flammability in a heating, ventilation, and air conditioning (HVAC) system having R32 refrigerant included in the refrigerant composition. Refrigerant compositions and methods of use are described which can be used for retrofitting, servicing, controlling flammability, improving performance, lubricant solubility and miscibility, and improving the safety of an HVAC system.
C09K 5/04 - Substances qui subissent un changement d'état physique lors de leur utilisation le changement d'état se faisant par passage de l'état liquide à l'état vapeur ou vice versa
F25D 17/00 - Dispositions pour la circulation des fluides de refroidissement; Dispositions pour la circulation de gaz, p.ex. d'air, dans les enceintes refroidies
35.
SUCTION DUCT AND MULTIPLE SUCTION DUCTS INSIDE A SHELL OF A FLOODED EVAPORATOR
A suction duct is disposed within a shell and tube heat exchanger. The suction duct is located relatively high and above the tube bundle so as to not entrain liquid or droplets that may be splashing and spraying upward. The suction duct is configured with an area schedule in fluid communication with a flow path inside the suction duct. The flow path is in fluid communication with an outlet of the shell. This is advantageous relative to traditional top of the shell outlets which generally have higher vertical footprints. The area schedule of the suction duct can facilitate and/or maintain relatively smooth vapor flow within the shell. The area schedule can achieve vapor flows that have some uniformity along the length of the shell, which can manage and/or avoid localized vapor flow and/or local currents, such as where high velocity may be present and where entrainment can result.
A combination refrigeration displacement and drain device is disclosed that can be mounted within a heat exchanger, such as a shell and tube heat exchanger, which may be used for example as a heat exchanger in a chiller unit, which may be used in an HVAC or refrigeration system. One example of such components can include heat exchangers, such as for example a condenser employing a gravity drain. Advantageously, the combination refrigeration displacement and drain device herein can provide a refrigerant charge reduction for example that is used in the chiller unit, while facilitating drainage out of the heat exchanger. The combination refrigeration displacement and drain device can alleviate the liquid refrigerant accumulation that may normally be necessary to induce flow in a gravity drain design.
F28F 17/00 - Enlèvement de la glace ou de l'eau des appareils échangeurs de chaleur
F28D 1/04 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source d avec des canalisations d'échange de chaleur immergées dans la masse du fluide avec canalisations tubulaires
F24F 13/30 - Agencement ou montage d'échangeurs de chaleur
37.
SYSTEMS AND METHODS TO PROVIDE LUBRICANT TO A BEARING
Systems and methods to help provide lubricant to a bearing in a compressor are disclosed. The embodiments disclosed herein generally are directed to systems and methods to provide a lubricant flow to the bearing, where the lubricant flow relies on the rotation of a shaft of the compressor, so that the lubricant flow can be independent of a power supply.
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Rong, Wei Guang
Chen, Bin Bin
Zhang, Yong
Abrégé
A mounting clip that can be used to mount a heat exchanger to a housing, for example, in a HVAC system is disclosed. The mounting clip (200) may include a receiver portion(210) configured to receive, for example, an end portion (290a,290b) of the heat exchanger (290). The mounting clip (200) may also include a clip portion (220) configured to secure the mounting clip to the housing. The mounting clip can be used to mount the heat exchanger to the housing relatively easily, reducing the manufacturing cost and time of the HVAC system.
A heat exchange tube combines an external surface feature, for example having crushed fins and cavities, which can have very high boiling enhancement characteristics, with an internal surface feature, for example having high performing intersecting helices, e.g. "cross hatched" with an intersecting helix angle. The new tube can provide a high performing tube in a shell and tube evaporator that can be relatively smaller, more efficient, and that can use relatively lower refrigerant charge.
F28F 1/10 - Eléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p.ex. avec des ailettes, avec des saillies, avec des évidements
F28F 1/42 - Eléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p.ex. avec des ailettes, avec des saillies, avec des évidements les moyens étant à la fois à l'extérieur et à l'intérieur de l'élément tubulaire
F28F 1/16 - Eléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p.ex. avec des ailettes, avec des saillies, avec des évidements ces moyens étant uniquement à l'extérieur de l'élément tubulaire et s'étendant longitudinalement les moyens faisant partie intégrante de l'élément, p.ex. formés par extrusion
F28F 21/08 - Structure des appareils échangeurs de chaleur caractérisée par l'emploi de matériaux spécifiés de métal
40.
SYSTEMS AND METHODS TO DETECT HEATER MALFUNCTION AND PREVENT DRY BURNING
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Cong, Nipeng
Zhao, Hua
Yuan, Ping
Abrégé
A heater (300) is provided. The heater (300) can be configured to set off an alarm when a heating element (320) is broken or malfunction. The heater (300) can also be configured to connect the heating element (320) to a relatively low voltage when the heating element (320) may experience a dry burning condition.
Apparatuses, systems and methods are directed to heat exchangers that are made of microchannel tubes and that have offset fins of various geometries and density. The heat exchanger coils can be implemented in various refrigeration and/or heating, ventilation, and air conditioning (HVAC) units or systems thereof.
F28F 1/32 - Eléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p.ex. avec des ailettes, avec des saillies, avec des évidements ces moyens étant uniquement à l'extérieur de l'élément tubulaire et s'étendant transversalement les moyens ayant des parties engageant d'autres éléments tubulaires
F28F 9/013 - Supports auxiliaires pour les éléments pour les tubes ou les assemblages de tubes
F28F 13/18 - Dispositions pour modifier le transfert de chaleur, p.ex. accroissement, diminution par application d'un traitement de surface, p.ex. un polissage
F28F 19/02 - Prévention de la formation de dépôts ou de la corrosion, p.ex. en utilisant des filtres en utilisant des revêtements, p.ex. des revêtements vitreux ou émaillés
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Du, Yuqing
Abrégé
Systems, apparatuses and methods to position an outdoor heat exchange unit of an HVAC system so that a heat exchange coil can be oriented to a desired orientation relative to a wind direction are provided. The outdoor heat exchange unit can take advantage of the wind to facilitate moving air through the heat exchange coil so as to help reduce fan speed and/or energy consumption. The outdoor heat exchange unit can be positioned so that an undesired effect of the wind on the heat exchange coil can be reduced or minimized. The heat exchange coil can be oriented to a desired orientation relative to a wind direction based on, for example, operation modes of the HVAC system.
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Tang, Sheng Tonesen
Li, Yan Aka
Hu, Yong
Chai, Guohong Galen
Abrégé
Provided are a heat pump system (100) and a method of controlling the same. The heat pump system (100) comprises a plurality of outdoor units (105A, 105B) operable in a plurality of operation modes in fluid communication with one or more indoor units (125) via a heat transfer circuit (200). A first and a second of the plurality of outdoor units (105A, 105B) includes a compressor (205A, 205B), and a first flow control device (220A, 220B) between the compressor (205A, 205B) and an outdoor heat exchanger (225A, 225B) in a first flow direction and between the compressor (205A, 205B) and a second flow control device (250A, 250B) in a second flow direction. In a first state, the first flow control device (220A, 220B) permits refrigerant flow to the outdoor heat exchanger (225A, 225B). In a second state, the first flow control device (220A, 220B) permits refrigerant flow to the second flow control device (250A, 250B). The second flow control devices (250A, 250B) of the first and second of the plurality of outdoor units (105A, 105B) are individually controllable to set the first and/or second of the plurality of outdoor units (105A, 105B) to a defrost mode.
The embodiments disclosed herein are directed to systems and methods to control a HVAC system based on a state of an unloader of a compressor of the HVAC system.
A computing device, such as a thermostat, may be structured to communicate with a network access device via a first protocol and communicate with a plurality of home automation devices via a second protocol. The computing device may also be structured to operate as a primary controller or a repeater device in a home automation system. The computing device may receive information from a server instructing the computing device to operate as the primary controller or the repeater device. Or, the computing device may determine itself whether to operate as the primary controller or repeater device.
H04L 12/28 - Réseaux de données à commutation caractérisés par la configuration des liaisons, p.ex. réseaux locaux [LAN Local Area Networks] ou réseaux étendus [WAN Wide Area Networks]
H04L 12/12 - Dispositions pour la connexion ou la déconnexion à distance de sous-stations ou de leur équipement
H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
46.
PHOBIC/PHILIC STRUCTURES IN REFRIGERATION SYSTEMS AND LIQUID VAPOR SEPARATION IN REFRIGERATION SYSTEMS
Oleophobic and/or philic surface(s) are utilized for oil separation, direction, and/or collection in a refrigeration system. Surfaces of component(s) of a refrigeration system (compressor, oil separator, evaporator, etc.) are produced to be oleophobic or philic. The oleophobic and/or philic surfaces are utilized to direct a flow path of oil within the refrigeration system or to prevent oil connection in an area. Refrigerant phobic and/or lubricant phobic material(s) also may be utilized to help promote separation of refrigerant vapor from refrigerant liquid and/or from oil in refrigeration systems.
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
Methods and systems to mount a shaft with a motor rotor are provided. The motor may include a plurality of permanent magnets embedded in a lamination stack of a rotor of the motor, which may run through the length of the lamination stack. The motor can include a shaft that may be coupled to the rotor in a center bore of the rotor. The shaft may be coupled to the rotor with a keyway. The shaft may be coupled to the rotor with a press fit. The shaft may be coupled to the rotor with a cold shrink fit. The motor may include a counter weight disposed on the shaft. The counter weight may help retain the shaft on the rotor. The embodiments as disclosed herein can help couple the shaft and rotor without using heat that may demagnetize the permanent magnets.
F04C 18/02 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement, c. à d. avec un mouvement de translation circulaire des organes coopérants, chaque organe possédant le même nombre de dents ou de parties équivalentes de prise
F04C 29/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT; POMPES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes
Methods, systems and apparatuses for mounting a motor rotor to a shaft of a compressor are disclosed. The shaft can include a rib region that is configured to form a press fit or a transition fit with the rotor bore. An end of the shaft can also include a plurality of crenulations that can be expanded outwardly in a radial direction relative to a centerline of the shaft. After the rotor is mounted onto the shaft, the crenulations can be expanded to eliminate the clearance between the shaft and the rotor to form a press fit with the rotor bore.
A fan assembly and a method of assembling a diffuser collar in the fan assembly are disclosed. The fan assembly includes an impeller including a plurality of blades. The impeller has an impeller diameter. A duct is configured to receive an outflow provided by the impeller. The duct has a duct exit diameter that is larger than the impeller diameter. The fan assembly further includes a diffuser collar extending from the impeller toward a duct exit. The diffuser collar is configured and arranged to radially expand the outflow provided by the impeller. The diffuser collar has a first diameter at a first edge disposed a first distance from the impeller. A contour extends from the first edge toward a second edge having a second diameter. The second edge is disposed a second distance from the impeller. The first distance is smaller than the second distance, the first diameter is smaller than the second diameter, and the first and second diameters are smaller than the duct exit diameter.
Devices and computer-implemented methods for controlling data communication to one or more devices in a network, e.g., a mesh network. The methods include a device broadcasting data requested by a first device, and a second device eavesdropping on the broadcast of the data in order to capture the data and to storing the captured data if the data is appropriate for the second device.
H04L 12/24 - Dispositions pour la maintenance ou la gestion
H04L 12/28 - Réseaux de données à commutation caractérisés par la configuration des liaisons, p.ex. réseaux locaux [LAN Local Area Networks] ou réseaux étendus [WAN Wide Area Networks]
A control device includes a graphical user interface for an automated schedule. The automated schedule may include multiple schedule periods. Schedule parameters may be adjusted by selecting a portion of one of the schedule periods, for example, on a touchscreen display. The control device may be a thermostat to control temperature in a building.
A mounting plate assembly for securing a plug of a network cable to a jack of an electronic device. The assembly includes a mounting plate having an attachment mechanism that is configured for releasable locking engagement with the electronic device. Further, the mounting plate is adapted to be mounted to a mounting structure. The mounting plate includes inner passageway that is adapted to receive insertion of at least a portion of the plug. Additionally, the inner passageway is adapted to depress a locking clip of the inserted plug to a position that prevents the locking clip from lockingly engaging a protrusion in an aperture of the jack. Further, the retention member may include at least one arm that is configured to retain the plug in a relatively static position relative to the mounting plate when the plug is being received in, and removed from, the aperture of the jack.
H01R 4/28 - Connexions par serrage; Connexions par ressort
H01R 13/62 - Moyens pour faciliter l'engagement ou la séparation des pièces de couplage ou pour les maintenir engagées
H01R 24/76 - Dispositifs de couplage en deux pièces, ou l'une des pièces qui coopèrent dans ces dispositifs, caractérisés par leur structure générale avec des broches, des pinces ou des contacts analogues, assujettis à l'appareil ou à la structure, p.ex. à une paroi
An improved discharge port of a rotary screw compressor is described. A discharge port of a screw compressor generally includes a restrictive portion to help prevent a leakage of working fluid back to a suction side of the compressor. The improved discharge port is configured to have a restrictive portion with a reduced size compared to a restrictive portion of a conventional discharge port, resulting in an enlarged opening of the discharge port compared to a conventional discharge port. The improved discharge port can help discharge the compressed working fluid more quickly than a conventional discharge port, reducing and/or avoiding over-compression of the working fluid. The efficiency gained due to the enlargement of the opening may be more than the efficiency loss due to leakage of working fluid back to the suction side, resulting in a net efficiency gain of the compressor.
F04C 18/16 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles du type à engrènement extérieur, c. à d. avec un engagement des organes coopérants semblable à celui d'engrenages dentés d'un autre type qu'à axe interne avec des pistons rotatifs dentés à dents hélicoïdales, p.ex. du type ayant la forme d'un chevron, du type à vis
F04C 29/12 - Dispositions pour l'admission ou l'échappement du fluide de travail, p.ex. caractéristiques de structure de l'admission ou de l'échappement
54.
ROTARY COMPRESSORS WITH VARIABLE SPEED AND VOLUME CONTROL
Systems and methods are used to control operation of a rotary compressor of a refrigeration system to improve efficiency by varying the volume ratio and the speed of the compressor in response to current operating and load conditions. The volume of the axial and/or radial discharge ports of the compressor can be varied to provide a volume ratio corresponding to operating conditions. In addition, permanent magnet motors and/or control of rotor tip speed can be employed for further efficiency gains.
F04C 28/12 - Commande, surveillance ou dispositions de sécurité pour les pompes ou les installations de pompage spécialement adaptées pour les fluides compressibles caractérisées par la modification des positions de l'ouverture de l'admission ou de l'échappement par rapport à la chambre de travail utilisant des tiroirs
55.
DIAGNOSTICS FOR SYSTEMS INCLUDING VARIABLE FREQUENCY MOTOR DRIVES
One embodiment is a diagnostic method for a system including setting a first diagnostic code based upon a condition of a DC bus of a variable frequency drive during a first drive state, setting at least one additional diagnostic code based upon a condition of at least one motor phase current during a second drive state, outputting first diagnostic information indicating a malfunction of the variable frequency drive if the first diagnostic code indicates a first error, and outputting second diagnostic information indicating a malfunction of a motor or a connector coupling the motor and the drive if the at least one additional diagnostic code indicates a second error.
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Zhang, Long
Abrégé
Methods, systems and apparatus that are configured to reduce a temperature change of a cooling fluid at where the CO2 may have a relatively high specific heat capacity in a gas cooler are provided. Additional cooling fluid can be introduced to where the CO2 may have a relativelyhigh specific heat capacity to reduce the temperature change of the cooling fluid. By slowing down the temperature change of the cooling fluid at where the CO2 may have the relatively high specific heat capacity, a temperature differential between the CO2 and the cooling fluid in the gas cooler can be maintained and/or created, which may help heat exchange between the CO2 and the cooling fluid.
F28D 7/10 - Appareils échangeurs de chaleur comportant des ensembles de canalisations tubulaires fixes pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation les canalisations étant disposées l'une dans l'autre, p.ex. concentriquement
57.
TRANSITIONAL REFRIGERANT MIGRATION CONTROL IN REFRIGERATION SYSTEMS
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
TRANE INTERNATIONAL INC. (USA)
Inventeur(s)
Liu, Weidong
Abrégé
Disclosed are a refrigeration circuit (110) and a method of controlling refrigerant migration within a refrigeration circuit (110). The refrigeration circuit (110) of a heat pump system (100) comprises a reservoir (5) which is provided to receive refrigerant from a first heat exchanger (3) of the heat pump system (100) when the heat pump system (100) switched from a cooling or defrost mode to a heating mode. The reservoir (5) is disposed fluidly between the first heat exchanger (3) and a second heat exchanger (7) of the heat pump system (100). The refrigerant flowing from the first heat exchanger (3) to the reservoir (5) is driven by a pressure difference between an outlet (3b) of the first exchanger (3) and an inlet (5b) of the reservoir (5).
F25B 13/00 - Machines, installations ou systèmes à compression, à cycle réversible
F25B 43/00 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
Inventeur(s)
Qin, Yunfei
Zhang, Jianming
Abrégé
Methods as disclosed herein are generally configured to help determine a pressure differential (or pressure head) in a fluid circulation system of, for example, a HVAC system, for controlling the fluid circulation system. The method may include obtaining a correlation between a fluid flow rate and a pressure differential in the fluid circulation system by varying an operation speed of the pump. The method may also include obtaining a desired fluid flow rate for matching a cooling capacity of the HVAC system and determining a pressure differential setpoint corresponding to the desired fluid flow rate based on the correlation between the fluid flow rate and the pressure differential. The methods can be executed by, for example, a controller of the HVAC system so as to eliminate the requirement of a user to set up the pressure differential.
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
Inventeur(s)
Teng, Jun
Lin, Shexia
Pan, Guohong
Wang, Chungang
Liu, Dongshun
Abrégé
An outdoor unit (100) of an air conditioning system may be configured to have a generally flower-shaped profile. A top panel (217) of the flower-shaped outdoor unit (100) may be configured to have a generally hexagon shape. The outdoor unit (100) may be configured to have two coil supporting frames (212L, 212R), which may be configured to support two coils (230) generally facing each other. Each of the coils (230) may be configured to have two coil sections (230a, 230b) that are diagonally positioned. The flower-shaped outdoor unit (100) may help create a more evenly distributed air flow along a height of the condenser coils (230). When multiple flower-shaped outdoor units (100) are installed next to each other in operation, the flower-shaped outdoor unit (100) may provide a space between the two neighboring outdoor units (100) to allow an air flow to flow through.
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
Inventeur(s)
Liu, Bin
Ma, Jing
Huang, Fei
Abrégé
Methods of managing refrigerant/lubricant in an evaporator are provided. The methods comprise: directing refrigerant/lubricant into a shell side of the evaporator; collecting the refrigerant/lubricant and directing the refrigerant/lubricant toward a longitudinal direction of the evaporator to form a first longitudinal refrigerant/lubricant stream; and forming a refrigerant/lubricant pool to exchange heat with a heat exchanger tube of the evaporator. Also shell and tube evaporators used for the above methods are provided. By forming longitudinal refrigerant streams in the pans, heat exchange efficiency may be improved and a lubricant content in refrigerant streams may be concentrated toward a bottom of the evaporator.
F28D 7/16 - Appareils échangeurs de chaleur comportant des ensembles de canalisations tubulaires fixes pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation les canalisations étant espacées parallèlement
F28F 27/02 - Commandes ou dispositifs de sécurité spécialement adaptés pour les appareils d'échange ou de transfert de chaleur pour commander la répartition des sources de potentiel calorifique entre des canaux différents
TRANE AIR CONDITIONING SYSTEM (CHINA) CO., LTD. (Chine)
Inventeur(s)
Cude, James Russell
Kirksey, Michial Ernest
Rong, Guangwei
Abrégé
A valve cap (14) can be configured to have an integral sealing member (50) at least part of which is extendable into an opening (18) of a valve body (12) and seals against an inner surface of a valve body wall (16). The sealing member (50) is configured to have a void space (51) such that when fluid leaks from a valve stem disposed in the valve body (12), an internal pressure in the void space forces a surface of the sealing member (50) against the inner surface of the valve body wall (16), thereby tightening a seal between the sealing member (50) and the valve body wall (16). In such circumstances, the fluid is prevented effectively from exiting the valve cap (14).
TRANE AIR CONDITIONING SYSTEMS (CHINA) CO., LTD. (Chine)
Inventeur(s)
Lv, Zhenhai
Zhang, Limin
Chen, Wenyong
Abrégé
Methods, systems, and apparatuses are described to help manage oil return such as in a chiller system of a HVAC system. A refrigerant/oil mixture can be directed out of the evaporator into an oil return heat exchanger that is configured to help vaporize a refrigerant portion of the refrigerant/oil mixture. Superheat refrigerant vapor can be directed from a condenser into the oil return heat exchanger as the heat energy to vaporize the refrigerant portion in the refrigerant/oil mixture. The oil return heat exchanger can be positioned lower than the evaporator so that gravity can help the refrigerant/oil mixture to flow into the oil return heat exchanger.
F25B 1/047 - Machines, installations ou systèmes à compression à cycle irréversible à compresseur rotatif du type à vis
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
63.
CONTROLS AND OPERATION OF VARIABLE FREQUENCY DRIVES
Unique apparatuses, methods, and systems of opposing, limiting, and/ or preventing undesired or un-commanded compressor rotation are disclosed. One exemplary embodiment is an HVACR system comprising a variable frequency drive configured to drive an electric motor to rotate a screw compressor or scroll compressor. A controller is configured to monitor various aspects of the system and to control the drive. When a condition indicative of potential undesired or un-commanded compressor rotation is identified, the controller commands the variable frequency drive to control the motor to limit and preferably prevent compressor rotation. One technique comprises shorting switches of the drive to a DC bus rail to allow back EMF induced current in the motor windings to be dissipated through winding resistance thus providing a damping force. Another technique comprises controlling the inverter to insert a DC current into the motor to cause the motor to align to and hold a particular position.
An exemplary system includes a compressor, a condenser, an expander, and an evaporator fluidly coupled to form a vapor-compression circuit, and an electric motor configured to drive the compressor. An inverter having a plurality of switching elements is configured to provide an output voltage to the electric motor through operation of the switching elements. A waste heat recovery circuit is configured to transfer waste heat from the inverter to a load. A controller is configured provide switching commands to the switching elements of the inverter. The controller is further configured to sense a condition of the system, determine a heat production requirement based at least in part upon the system condition, and to vary the number of switching commands per unit time based at least in part upon the heat production requirement.
Embodiments are described herein to provide a functional composition that can be added to the lubricant of the HVAC system to help prevent/reduce the lubricant breakdown. The functional composition can also help prevent/reduce material deposition on, for example, an orifice of an expansion or heat transfer surface(s) or heat transfer surface(s). The functional composition can be added as an additive to a lubricant of a HVAC system to form a lubricant composition. The lubricant composition can be added to a HVAC system to help prevent/reduce the material deposition. In some embodiments, the functional composition can be added to a HVAC system during operation of the HVAC system to help remove/reduce existing material deposition.
C10M 163/00 - Compositions lubrifiantes caractérisées en ce que l'additif est un mélange d'un composé de constitution indéterminée ou incomplètement déterminée et d'un composé non macromoléculaire, chacun de ces composés étant un composé essentiel
Defoaming compounds that can be included in a HVAC system are provided. In some embodiments, the refrigerant compositions and/or additives may include one or more defoaming compounds that have one or more of the following properties: helping reduce a surface tension of the lubricant and/or refrigerant; having a different surface tension than the lubricant and/or refrigerant; being substantially non-dissolvable with the refrigerant and/or lubricant; and/or having less dense than the refrigerant and/or lubricant so that the compounds may stay on the surface of the refrigerant and/or lubricant. In some embodiments, the defoaming compounds may be selected from mineral oil, silicone based oil, fatty alcohols, fatty acids, alky amines, treated silica, aluminum oxide, polyacrylates, acrylate esters polypropylene, alkyl sulfates, alkyl ethoxylate sulfates, alkyl aryl sulfonates, phosphate esters, quaternary ammonium compounds, fatty amine salts, fatty acid amides, alkyl phenol ethoxylates, ethoxylate -propoxylate polymers and fatty alcohol ethoxylates.
A heat exchanger, for example a shell and tube flooded evaporator, has a refrigerant distributor that is positioned at an angle between the bottom of the shell and the sides of the shell, and includes an inlet that is welded to an inlet piping, where the inlet and inlet piping are in fluid communication with the refrigerant distributor, and are in a generally corresponding position orientation. Tubes of a tube bundles may extend proximate the bottom of the shell.
F28D 1/04 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source d avec des canalisations d'échange de chaleur immergées dans la masse du fluide avec canalisations tubulaires
F28D 1/053 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source d avec des canalisations d'échange de chaleur immergées dans la masse du fluide avec canalisations tubulaires les canalisations étant rectilignes
An HVAC thermostat has a processor configured to control at least one component of an HVAC system in response to temperature and at least one of (1) receive voice over internet protocol (VOIP) data and (2) transmit VOIP data.
A microchannel heat exchanger (108) of an HVAC system (100) may include a plurality of microchannel tubes (214) having fins (216) disposed between at least one pair of adjacent microchannel tubes (214). The pair of adjacent microchannel tubes (214) may connect a header (212) on each end of the microchannel tubes (214) in fluid communication, and at least one of the microchannel tubes (214) and the fins (216) are oriented substantially parallel with respect to a primary airflow direction (210) of an airflow across the microchannel heat exchanger (108).
F28D 1/053 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source d avec des canalisations d'échange de chaleur immergées dans la masse du fluide avec canalisations tubulaires les canalisations étant rectilignes
70.
MULTIPLE LOAD CONTROL FOR VARIABLE FREQUENCY DRIVE HARMONIC MITIGATION
Apparatuses, methods, and systems of multiple load control for variable frequency drive harmonic mitigation are disclosed. An exemplary embodiment includes a system including a plurality of loads including at least one compressor configured to compress refrigerant. The plurality of loads are driven by a plurality of electric motors. The plurality of electric motors are driven by a plurality of variable frequency drives. The plurality of variable frequency drives are electrically coupled to an AC source. In operation a desired cooling capacity of the system is determined, a harmonic mitigation control parameter is determined, and output of one or more of the variable frequency drives is activated, deactivated, adjusted or modulated to reduce the input harmonics and provide the desired cooling capacity.
B60W 20/00 - Systèmes de commande spécialement adaptés aux véhicules hybrides
F04B 49/20 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes en modifiant la vitesse d'entraînement
71.
VARIABLE FREQUENCY DRIVE OPERATION TO AVOID OVERHEATING
Operation of a variable frequency in a manner configured to avoid overheating is provided. In one form, a method includes providing a variable frequency drive that includes a switching device in thermal communication with a heat sink including a thermal mass. The method further includes operating the drive in a first mode before active cooling of the heat sink is established and a second mode following the first mode. Operation of the drive in the first mode includes operating the switching device in a first switching frequency mode, and the first switching frequency mode and the thermal mass of the heat sink are selected to provide a temperature of the switching device below a predetermined threshold before active cooling of the heat sink is established. Further embodiments, forms, features, and aspects shall become apparent from the description and drawings.
H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
H01L 23/36 - Emploi de matériaux spécifiés ou mise en forme, en vue de faciliter le refroidissement ou le chauffage, p.ex. dissipateurs de chaleur
72.
VARIABLE FREQUENCY DRIVE TEMPERATURE DETERMINATION
Temperature value determination of at least one variable frequency drive component is provided. In one form, a method includes providing a variable frequency drive that includes a first component in thermal communication with a second component in thermal communication with a switching device. A temperature value of the second component is determined using a temperature value of the first component, a power loss characteristic of the drive, and a first characteristic of heat transfer between the first and second components. The method further includes sensing a temperature value of the second component and determining a temperature value for the switching device using the power loss characteristic, a second characteristic of heat transfer between the second component and the switching device, and the greater of the sensed and determined temperature values of the second component. Further embodiments, forms, features, and aspects shall become apparent from the description and drawings.
G01K 7/00 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur
H02M 7/42 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité
H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
A condenser equipped with a refrigerant outlet configured to receive and store liquid refrigerant during an off-cycle is described. The refrigerant outlet may include an outflow pipe surrounded by a weir. The weir may include a port, through which liquid refrigerant in the weir can be directed to, for example, moving parts of the chiller for lubrication. The outflow pipe may extend vertically relative to the bottom of the condenser. In some embodiments, a first opening of the outflow pipe may be positioned higher than the bottom of the condenser in the vertical direction, while the weir may be positioned lower than the bottom of the condenser. Liquid refrigerant in the condenser can flow to and stay in the weir in an off-cycle. During a subsequent start-up, the liquid refrigerant in the weir can be directly quickly to moving parts of the chiller.
Generally, apparatuses, systems, and methods are described to prime a refrigerant pump by decoupling or shielding from a condenser operation, such as for example the condenser water pump, so that liquid refrigerant can be appropriately sourced from the condenser and/or the evaporator using flow control device(s) such as a source valve on a source line of the condenser and/or on a source line of the evaporator and the control of such valve(s).
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
Methods and systems for detecting and recovering from control instability caused by impeller stall in a chiller system are provided. In one embodiment, an impeller stall detection and recovery component of a chiller control unit calculates a control error signal frequency spectrum for an evaporator leaving water temperature, determines whether a high frequency signal content of the control error signal frequency spectrum exceeds acceptable limits, and adjusts a surge boundary control curve downward by a predetermined incremental value in order to resolve instability caused by impeller stall.
Generally, apparatuses, systems, and methods are described to vent refrigerant vapor from the refrigerant pump line using a vent line, such as during priming of the pump and/or during a startup of the compressor, directed to a relatively reduced volute casing mass of the refrigerant pump, and/or directed to returning refrigerant to an economizer or chiller component other than the condenser.
F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
F04B 49/22 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes par clapets
Embodiments are described herein to provide refrigerant and/or refrigerant composition that is suitable for providing lubrication to, for example, moving parts of a chiller system. Embodiments are also described herein to provide an additive, such as a corrosion inhibitor and/or stabilizers, that can be added to the refrigerant to form refrigerant compositions that is suitable for providing lubrication to, for example, moving parts of a chiller system.
C09K 5/04 - Substances qui subissent un changement d'état physique lors de leur utilisation le changement d'état se faisant par passage de l'état liquide à l'état vapeur ou vice versa
78.
VARIABLE FREQUENCY DRIVE ACTIVE HARMONIC MITIGATION CONTROLS AND DIAGNOSTICS
Variable frequency drive active harmonic mitigation controls and diagnostics are disclosed. Exemplary controls and diagnostics include operating a variable frequency drive including converting an AC input line voltage to a DC voltage, generating a motor drive signal using the DC voltage, and driving an electric motor with the motor drive signal. A harmonic mitigation signal is provided to the drive configured to at least partially mitigate harmonics during the operation of the drive. The harmonic mitigation signal is inhibited based upon presence of an error condition associated with the drive input. The inhibiting is terminated based upon the absence of the error condition. A diagnostic fault condition based upon a number of occurrences of the error condition.
H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
Diagnostic and/or control methods, systems and apparatuses for variable frequency drives are disclosed. The variable frequency drive may be controlled by a controller that may conduct one or more tests or evaluations. The tests or evaluations may include determining whether a switching device in the variable frequency drive is open-circuited, short-circuited, or operating normally. The tests may include determining whether current provided at an inverter output of the variable frequency drive is within a predetermined range. An exemplary embodiment evaluates the drive for a short circuit condition, an open circuit condition, and a sensor error or failure condition, controls operation of the drive based upon these one or more evaluations, may abort operation of the drive based upon one or more evaluations, and may set a fault code indicative of the type of error encountered.
H02M 7/42 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité
H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
80.
PRESSURE NITRIDED STAINLESS STEEL HYBRID BEARING FOR A REFRIGERANT LUBRICATED COMPRESSOR
A pressure nitrided stainless steel hybrid ball bearing having an inner ring, an outer ring, and rolling elements disposed therebetween. The pressure nitrided stainless steel hybrid bearing has one or more component(s) made from a pressure nitrided stainless steel material. The pressure nitrided stainless steel hybrid bearing used with a refrigerant lubrication for chiller applications leads to a very long useful life time.
Methods and systems for controlling a chiller system to achieve control stability while maintaining optimum efficiency. Particularly, methods and systems for controlling a centrifugal compressor speed and an inlet guide vane position that establishes three distinct regions in the control path: (i) during initial unloading from full load, the inlet guide vane position is kept at a fully open position while the centrifugal compressor speed is changed to achieve the desired cooling capacity; (ii) between an inflection point and a transition point, keeping the centrifugal compressor speed constant while the inlet guide vane position is changed to achieve the desired cooling capacity; and (iii) between the transition point and zero cooling capacity, changing both the inlet guide vane position and the centrifugal compressor speed to achieve the desired cooling capacity.
Generally, apparatuses, systems, and methods are described that are directed to accessing liquid refrigerant from an evaporator to source a refrigerant pump and pump line to cool and lubricate such moving parts that may be part of the compressor, for example the compressor motor and the compressor bearings, and/or for cooling drives such as an adjustable or variable frequency drive.
Methods, systems and apparatuses are directed to a capacity modulating assembly configured to distribute two-phase refrigerant mixture to an evaporator of a HVAC system, such as a micro-channel heat exchanger (MCHEX) evaporator. The capacity modulating assembly may include a plurality of expansion devices. During capacity modulation, at least one of the plurality of expansion devices can be closed so that a refrigerant flow rate through the remaining expansion devices can be maintained. The capacity modulating assembly can include a refrigerant outflow port, which may help direct refrigerant out of the heat exchanger. The capacity modulating assembly can be connected with the MCHEX. The plurality of expansion devices can be configured to extend inside a header of the MCHEX to help distribute refrigerant to the micro-channel tubes of the MCHEX.
Overvoltage protection apparatuses, systems and methods for variable frequency motor drives are disclosed. In an exemplary embodiment, a variable frequency motor drive system including a rectifier, a DC bus electrically coupled with the rectifier, and an inverter electrically coupled with the DC bus is provided. A protection device electrically coupled with the rectifier and configured to interrupt power supply to the system based upon fault conditions is provided. A controller is provided and configured to receive information indicative of a voltage of the DC bus, process the received information to model a condition of at least one component of the variable frequency motor drive, and control the protection device to interrupt power supply to the variable frequency motor drive if the modeled condition meets a fault criterion.
H02H 7/08 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour moteurs dynamo-électriques
H02M 5/44 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p.ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases avec transformation intermédiaire en courant continu par convertisseurs statiques utilisant des tubes à décharge ou des dispositifs à semi-conducteurs pour transformer le courant continu intermédiaire en courant alternatif
85.
REFRIGERANT COMPRESSOR DRIVES OFFERING ENHANCED ROBUSTNESS, EFFICIENCY AND RATED VOLTAGE OPERABILITY
Apparatuses, methods, and systems offering enhanced robustness, efficiency and rated voltage operability for refrigerant compressor drives are disclosed. An exemplary embodiment is a method of operating a variable frequency drive. The method includes operating the drive over a first operating range to provide at least a desired operating speed and minimize d-axis current, operating the drive over a second operating range including injecting d-axis current to provide at least the desired operating speed, operating the drive over a third operating range at a de-rated speed less than the desired operating speed. In the first operating range the drive input voltage is greater than a first value. In the second operating range the drive input voltage is lower than the first value and greater than a second value. In the third operating range the drive input voltage is lower than the second value.
F04B 49/20 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes en modifiant la vitesse d'entraînement
86.
PERMANENT MAGNET MOTOR DEGRADATION DIAGNOSTICS SYSTEM
Techniques for motor magnet degradation controls and diagnostics are disclosed. An exemplary technique determines q-axis current, d-axis current, q-axis voltage, and/or d-axis voltage of a permanent magnet motor based upon sensed current and voltage information of the motor. This information is utilized to determine flux information. The flux information is utilized in evaluating collective state conditions of a plurality of motor magnets and evaluating localized state conditions of a subset of the plurality of motor magnets. The evaluations can be used to identify degradation or damage to one or more of the magnets which may occur as a result of elevated temperature conditions, physical degradation, or chemical degradation.
H02K 19/08 - Moteurs ayant un stator bobiné et un rotor lisse, sans bobinage, en matériau à large boucle d'hystérésis, p.ex. moteurs à hystérésis
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
Embodiments provided herein are directed to systems and methods of re-injecting vaporized flash refrigerant from an economizer into a two-stage compressor. The injection can be through an injection port positioned after the first compression stage. The location of the injection may have a relatively low static refrigerant pressure. The injection port and/or an injection pipe of the economizer may be configured to pre-condition the vaporized flash refrigerant so that a flow velocity and/or direction of the vaporized flash refrigerant flow can be match a flow velocity and/or direction of the refrigerant in the refrigerant conduit.
F25B 19/00 - Machines, installations ou systèmes utilisant l'évaporation d'un frigorigène mais sans récupération de vapeur
F25B 1/08 - Machines, installations ou systèmes à compression à cycle irréversible à compresseur à éjection, p.ex. utilisant un liquide sous pression utilisant de la vapeur sous pression
Heat pump systems and methods for providing chilled/hot liquid for air-conditioning and domestic hot-water, are provided. The heat pump systems include a first heat exchanger, a second heat exchanger and a third heat exchanger (e.g., a hot-water heat exchanger) that share at least one expansion valve disposed at a downstream position of the hot-water heat exchanger. The at least one expansion valve is disposed between the hot-water heat exchanger and the first and second heat exchangers. The heat pump systems can provide six operation modes, including a cooling mode, a heating mode, a water-heating mode, a heat-recovery mode, a simultaneous heating and water heating mode, and a defrost mode.
Provided is a shell and tube type evaporator (100, 400) for a chiller system. The evaporator (100, 400) includes a refrigerant box (130, 230) having features configured to help distribute the refrigerant evenly into heat-exchanging tubes (120,420) of the evaporator (100, 400). The shell side of evaporator (100, 400) includes sealing plates (150, 450) to help reducing process fluid by-passing a tube bundle (119, 419) in the shell side. The configuration disclosed herein may help increase efficiency and reliability of the evaporator (100, 400), and may help reduce a size of the evaporator (100, 400).
Embodiments of a refrigerant distributor for a micro-channel heat exchanger (MCHEX) are described. The refrigerant distributor may be configured to have orifices and/or a flow valve that are inside a header of the MCHEX. The MCHEX can be used as an evaporator in a cooling cycle, where refrigerant is distributed into the header(s) through the orifices and the flow valve may be generally in a closed state that generally prevents a refrigerant flow through the flow valve. In a heating cycle, the flow valve of the refrigerant distributor may be configured to be in an open state that allows the refrigerant to flow into the refrigerant distributor and to be directed out of the MCHEX through the refrigerant distributor. In some embodiments, the refrigerant distributor may be configured to receive liquid refrigerant, so as to eliminate the need of an expansion valve in a HVAC system.
F28F 9/22 - Dispositions pour diriger les sources de potentiel calorifique dans des compartiments successifs, p.ex. aménagement des plaques de guidage
F28F 9/02 - Boîtes de distribution; Plaques d'extrémité
F28D 1/04 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source d avec des canalisations d'échange de chaleur immergées dans la masse du fluide avec canalisations tubulaires
Methods and systems to manage refrigerant levels in a chiller system are provided. An evaporator of the chiller system may be configured to have a spill over port allowing oil containing refrigerant to spill over through the spill over port. The spill over port may be positioned at a place that corresponds to a desired refrigerant level in the evaporator. The spill over refrigerant may be directed into a heat exchanger that is configured to substantially vaporize refrigerant of the spill over refrigerant to a slightly superheat temperature. A method of maintaining a proper refrigerant level in the evaporator may include regulating a refrigerant flow to the evaporator so that the vaporized refrigerant of the spill over refrigerant is maintained at the slightly superheat temperature.
A system and method for controlling a system that includes a variable speed compressor are described. The method can provide improved accuracy in the control of a system, for example, a heating, ventilating, and air condition (HVAC) system that includes a variable speed compressor, and can reduce a compressor cycling frequency of the compressor when a required capacity is below a minimum capacity of the compressor.
F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
F04B 49/20 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes en modifiant la vitesse d'entraînement
93.
CONDENSATE DRAIN DEVICES FOR HEAT EXCHANGER COIL AND METHODS FOR MAKING THE SAME
A condensate drain device includes an elongate base having a first end, a second end and side edges extending between the first and second ends; a plurality of teeth extending away from a side edge of the base; and a lip formed on the side edge of the base opposite from the teeth. Each tooth includes a free end and two side edges. The condensate drain device is configured to be attached to a microchannel coil to collect condensate including a plurality of tubes and a plurality of fins coupled to the tubes, with each tooth being received in a space formed between two adjacent fins.
F28D 1/04 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source d avec des canalisations d'échange de chaleur immergées dans la masse du fluide avec canalisations tubulaires
F28F 17/00 - Enlèvement de la glace ou de l'eau des appareils échangeurs de chaleur
Disclosed is a shell and tube heat exchanger (100) in which heat-exchanging tubes (120) have "U" bend sections (121). The "U" bend sections (121) of the heat-exchanging tubes (120) may have stabilizing members (150) which are configured to stabilize the "U" bend sections (121) of the heat-exchanging tubes (120). The stabilizing members (150) may be configured to be made of an elastic material, such as rubber. The stabilizing members (150) may have a circular cross-section so that the stabilizing members (150) can be slid onto the heat-exchanging tubes (120) easily. The cross-section of the stabilizing members (150) may be larger than a gap (G4) between neighboring heat-exchanging tubes (150) so that the stabilizing members (150) can form an interference fit with an outer surface (160) of the heat-exchanging tubs (120). The stabilizing members (150) can help to prevent the neighboring heat-exchanging tubes (120) from colliding with each other.
F28F 9/013 - Supports auxiliaires pour les éléments pour les tubes ou les assemblages de tubes
F28D 7/06 - Appareils échangeurs de chaleur comportant des ensembles de canalisations tubulaires fixes pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation les canalisations ayant une courbure en U unique
Cooling systems and methods for controlling the temperature of motors of gas compression systems of chillers are disclosed. Certain systems utilize a centrifugal, two stage compressor equipped with a motor between the stages. The cooling system provides a low velocity refrigerant spray on at least one or both ends of the motor without requiring additional pumping energy from the motor to deliver the refrigerant spray.
F25B 5/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p.ex. pour faire varier la puissance frigorifique
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
96.
CHILLER CAPACITY CONTROL APPARATUSES, METHODS, AND SYSTEMS
Controls for chillers with variable speed and variable geometry compressors are disclosed. In exemplary embodiments, a centrifugal compressor equipped with a variable frequency drive and variable inlet guide vanes may be utilized. A controller is operable to determine a chiller capacity command, a speed command, and a vane position command. The speed command and vane position command may maintain system operation at or near a surge control boundary over one or more capacity ranges to enhance efficiency and deviate from the surge control boundary over certain capacity ranges to improve controllability or avoid control aberrations.
Techniques and arrangements for forming ground bonds between a plurality of components are provided. In one form, a grounding arrangement includes a first circuit board including a first ground plane and a flange member electrically coupled to the first ground plane. The arrangement also includes a second circuit board including a second ground plane, and a polymeric member including an electrically conductive coating. The polymeric member forms a bond between the first ground plane, the flange member, and the second ground plane. In one particular but non-limiting aspect of this form, the grounding arrangement is utilized in a human machine interface having a liquid crystal display. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the description and drawings.
Embodiments of a spill over tank for an evaporator of a HVAC system are described. The spill over tank may be configured to receive a refrigerant directed out of the evaporator. The spill over tank may be configured to have an outlet directing refrigerant in the spill over tank out of the spill over tank and flowing back to a compressor of the HVAC system. The spill over tank may be equipped with a refrigerant level sensor configured to measure a refrigerant level in the spill over tank. The measured refrigerant level in the spill over tank may be used to control and/or maintain a refrigerant level in the evaporator, and/or may be used to control a return refrigerant flow into the compressor of the HVAC system so as to manage an oil return to the compressor.
F24F 1/00 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale
F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
Embodiments of a water head for anevaporator in a HVAC system are provided. The water head may have a fluid entrance and a fluid exit in a side-by-side arrangement on one end of the water head, and a distribution chamber and a collection chamber in a top-down arrangement on an opposite side of the water head. The distribution chamber and the collection chamber are configured to be in fluid communication with inlets and outlets of a heat exchanging tube bundle respectively. The distribution chamber and the collection chamber can be configured to have continuously smooth surface contours to help reduce pressure drop and fluid separation, and promote advantageous distribution of the process fluid among heat exchanging tubes when a process fluid flows between the fluid entrance or the fluid exit, and the distribution chamber or the collection chamber respectively.
F28F 9/02 - Boîtes de distribution; Plaques d'extrémité
F28D 7/16 - Appareils échangeurs de chaleur comportant des ensembles de canalisations tubulaires fixes pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation les canalisations étant espacées parallèlement
100.
HVAC ELECTRICAL SYSTEM POWER SUPPLY PACKAGING SYSTEM
Embodiments of a HVAC electrical system power supply packaging system within an ultimate enclosure are provided. The HVAC electrical system power supply packaging system provides serviceability, safety, manufacturability, and system management failure diagnostic reporting enhancements over conventional packaging systems while conforming to agency safety requirements. The embodiments disclosed herein also reduce equipment and service costs for HVAC electrical system power supply components provided within the HVAC electrical system power supply packaging system by reducing delays in servicing these components. Thus, customer uptime of the HVAC system can be increased.
F24F 11/02 - Aménagements ou montage des dispositifs de commande ou de sécurité
F24F 1/00 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale
F24F 1/20 - Composants électriques pour éléments extérieurs séparés
F24F 3/00 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaire; Appareillage spécialement conçu pour de tels systèmes