A system for predicting failure of an HVAC fan motor unit includes a fan motor controller for measuring a time duration between reception of the deactivation signal from the control circuitry and speed of a fan reaching zero rotations per minute (RPM). The measured time duration is then transmitted to the control circuitry. The control circuitry stores a set of test time durations characterizing a working fan motor unit. During operation, the control circuitry periodically transmits an activation signal or a deactivation signal to the fan motor controller. The control circuitry receives and compares the measured time duration from the fan motor controller with a test time duration to generate a delta time duration variable. Subsequently, the control circuitry determines if the generated delta time duration variable exceeds a threshold time duration and predicts a failure time duration for the generated delta time duration to reach the threshold time duration.
A trigger device is disclosed including a body including first and second ends. The first end is configured to be operatively coupled to a tensioned line of a mechanical fire detection line. The trigger device includes a piston configured to be slidably disposed along a length of the body, the piston configured to be operatively coupled to the tensioned line. The trigger device includes slots provided on the body configured to receive actuation cables. The trigger device further includes a coupling element configured to be coupled to the piston and configured to slidably move responsive to movement of the piston. The coupling element includes a free end configured to move through the slots to selectively couple with the actuation cable. responsive to the piston moving towards the second end of the body, the coupling element moves out of the slots to decouple with the actuation cable.
A tension indicating for a fire suppression system device is disclosed, including a body including first and second ends. At least one of the first and second ends is configured to be operatively coupled to a tensioned line of a mechanical fire detection line of a fire suppression system. The tension indicating device further includes a piston configured to be slidably disposed along a length of the body, the piston configured to be operatively coupled to the tensioned line of the mechanical fire detection line. The piston is provided with a movable indicator. Responsive to the tensioned line being provided with tension, the piston moves towards the end of the body, thereby causing the movable indicator to correspondingly move to indicate a tension in the tensioned line of the fire suppression system.
A62C 37/42 - Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with mechanical connection between sensor and actuator, e.g. rods, levers
A62C 3/00 - Fire prevention, containment or extinguishing specially adapted for particular objects or places
A system for smoke/fire discrimination and identification of the fire source is provided. The system comprises a control unit that is configured to receive data pertaining to gases present in the smoke generated by a burning material and receive data pertaining to temporal characteristics of fire caused by the burning material. The control unit identifies the burning material based on the data pertaining to the one or more gas and the data pertaining to temporal characteristics of fire; and trigger a fire event based on the identified burning material. The control unit identifies and classifies the burning material as one of the known burning materials based on matching of the detected gas and the captured temporal characteristics with the database.
A patch antenna comprises a radiating microstrip patch element; and a ground layer electromagnetically connected to the patch element, wherein the ground layer is configured such that a radiation pattern of the patch antenna comprises a beam perpendicular to the antenna aperture, and a sub-beam parallel to the antenna aperture.
A ventilator having a functionality to defrost a ventilator core includes a two sets of ports, one set used for coupling of the ventilator with ducting and other used for redirecting indoor air flowing along a first flowpath through the recovery core to a second flow path normally used for outdoor air. A re-circulator is removably fixed between an inlet for outdoor air and an outlet for indoor air of the set of ports not coupled to the ducting. A pair of dampers, operated by a single motor, allow the ventilator to be operated in a mode that enables redirection of the indoor air from the first flowpath to the second flowpath, simultaneously blocking inflow of the outdoor air.
Aspects of the invention are directed towards an apparatus and method for switching premises in a convenient way. One or more embodiments of the invention describe the method comprising steps of transmitting a request to a server for switching a first premises with a second premises. Further, the first premises being accessed using an access card on a first access terminal associated with the first premises. The method further describes steps of receiving access credentials for the second premises from the server in response to the request. The method also describes steps of encoding the access card with the access credentials to access a second access terminal associated with the second premises for permitting entry inside the second premises.
A ventilator having a bypass ventilator core/blank core configured removably in a first chamber of a housing of the ventilator. Housing includes a first flowpath between a first inlet and a first outlet, and a second flowpath between a second inlet to a second outlet. The two flowpaths extend through the first chamber. The blank core includes at least one first passageway and at least one second passageway that are in fluid communication with the first flowpath and the second flowpath respectively, thereby allowing a first fluid to flow from the first inlet to the first outlet and a second fluid from the second inlet to the second outlet. Replacement of the blank core by one or more recovery cores enables conversion of the ventilator to a recovery ventilator.
Disclosed is a direct-drive refrigerant screw compressor, having: a housing; a compression chamber in the housing; a pair of rotors, each rotor of the pair of rotors being rotationally disposed in the compression chamber and including an outer surface with a screw-geared profile; a fluid being disposed in the compression chamber, the fluid consisting of a working fluid for providing lubrication to each rotor; a first port extending through the housing and configured for directing the fluid toward the compression chamber; and when the compressor is activated, each rotor rotates and the fluid is distributed about each rotor to lubricate each rotor.
F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
A ventilator comprising a housing comprising a first flowpath extending from a first inlet to a first outlet, and a second flowpath extending from a second inlet to a second outlet. The housing further comprises a partition defining a first chamber therein. The ventilator further comprises a second chamber. The first flow path extends through the first chamber and the second chamber, and the second flowpath extends through the first chamber. The ventilator further includes a movable damper disposed in the first flowpath and configured to apportion a quantity of a first fluid flowing therein between the first and second chambers. The second chamber and the movable damper are configured in a removable part adapted to be fitted in place of a cover part of the housing of the ventilator.
A networked heating, ventilation and air-conditioning (HVAC) system is provided. The networked HVAC system includes HVAC equipment deployed in a building and an element of HVAC equipment, which is communicatively coupled with the HVAC equipment to collect types of diagnostic information relating to the HVAC equipment. The element of HVAC equipment is normally operable in a normal mode and is selectively operable in a service mode. The normal mode is characterized in that diagnostic information is collected by the element of HVAC equipment at a first rate. The service mode is characterized in that diagnostic information is collected by the element of HVAC equipment at a second rate, which is greater than the first rate.
The present application relates to a system-on-chip SoC, the system-on-chip SoC comprising: a power regulating input port; and a light-emitting diode LED driving circuit coupled with the power regulating input port, wherein the light-emitting diode LED driving circuit is used to provide a constant current output, and wherein the light-emitting diode LED driving circuit comprises an adjustable resistor, so that the constant current output changes with a change in resistance value of the adjustable resistor. The present application also relates to a smoke detection device.
H05B 45/345 - Current stabilisation; Maintaining constant current
G08B 17/103 - Actuation by presence of smoke or gases using a light emitting and receiving device
H05B 45/56 - Circuit arrangements for operating light-emitting diodes [LED] responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
14.
COOLING SYSTEM FOR A VARIABLE FREQUENCY DRIVE IN A TRANSPORT REFRIGERATION UNIT
A cooling system for a variable frequency drive (VFD) of a transport refrigeration unit (TRU) is disclosed. The system comprises a conduit disposed within the vehicle and extending between a opening provided at a first predefined position on the outer body of the vehicle and the VFD being positioned at a second predefined position within the vehicle. The opening facilitates the inflow of ambient air within the conduit that carries the ambient air towards the VFD to enable cooling of the VFD. The system includes a grill cover adapted to be removably attached to the opening and/or the first end of the conduit, which allows entry of the ambient air within the conduit and restricts entry of outside objects and/or living organisms within the conduit.
F25D 17/08 - Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating gas, e.g. by natural convection by forced circulation using ducts
F25D 11/00 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators
15.
SYSTEM AND METHOD FOR OPERATING VARIABLE FREQUENCY DRIVE USING AC-POWER SOURCE IN TRANSPORT REFRIGERATION UNIT
A system in a transport refrigeration unit (TRU) for driving a compressor and/or fan(s) of the TRU by a variable frequency drive (VFD) that is operable using AC power comprises the VFD operatively connected between the compressor and one or more ac power source such as an engine-generator assembly of the TRU and/or an electrical grid. The same VFD or a different VFD is also operatively connected between the AC power source and fan(s) associated with an evaporator, and a condenser of the TRU. The VFD is configured to be operated by the AC power sources. The VFD is operable to receive a 3-phase AC power ranging from 200 to 650 volts and 0.25 to 25 KW from at least one of the AC power source, convert the received 3-phase AC power to supply AC or DC power to a motor associated with the compressor and/or the fan(s).
H02P 27/04 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
A foldable filter bank and a filter assembly for a filter cabinet is disclosed. The filter cabinet is adapted to accommodate and hold the filter bank in a deployed state. The filter assembly comprises a foldable filter bank comprising a plurality of filter-media packs, where adjacent filter-media packs among the plurality of filter-media packs are hingedly coupled to each other using at least one coupling element, where the filter bank has one or more of a deployed state, a folded state, and an extended state. The deployed state corresponds to a pleated formation of the filter bank, in which adjacent filter-media packs are oriented at non-parallel angles.
Disclosed herein is a method and a data processing system for environment evaluation, and a computer-readable storage medium with a computer program for executing the aforementioned method stored thereon. A data processing system according to one aspect comprises: at least one processor; at least one memory; and a computer program stored on the memory and executable on the processor, wherein execution of the computer program on the processor results in the following operations: obtaining user evaluations of an environment and environmental parameter measurements from a plurality of mobile devices; and generating evaluation information about the environment from the user evaluations and the environmental parameter measurements.
A cable connector assembly is disclosed. The cable connector assembly includes a housing member having a first end and a second end defining a passage therebetween. The housing member includes a first engaging portion and a second engaging portion coaxially extending from the first end and the second end, respectively. The housing member is adapted to accommodate at least one terminal block to electrically connect a first cable and a second cable. Further, the cable connector assembly includes a first clamping member adapted to be partially inserted in the first engaging portion of the housing member and to coaxially align with the passage to accommodate insertion of the first cable therein. The first clamping member is adapted to elastically deform to clamp the first cable.
H01R 13/502 - Bases; Cases composed of different pieces
H01R 13/52 - Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
H01R 43/20 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
21.
SYSTEM AND METHOD FOR REAL-TIME TRIP AUTOMATION AND EVENT MONITORING FOR SHIPMENTS
A system and method for real-time trip automation and event monitoring of shipments is disclosed. The system includes one or more containers, and monitoring devices configured in each container. These monitoring devices monitor the attributes of zones in the container and the location of the container during the trip. Further, a server receives a predefined trip automation rule associated with the container, being defined by the user. The server communicates with the monitoring devices to receive the set of data points pertaining to the location of the containers during the trip. Further, the server confirms and notifies the location and status of the containers by checking the location of the monitoring device, for a predefined number of consecutive data points, within or outside the geofence of the locations.
An aerothermodynamic separator for a refrigerated display cabinet is disclosed. The separator comprises a flat member having a predetermined dimension defining a shape of the separator. The separator is adapted to be removably positioned between a front end of one or more shelves associated with the cabinet and a rear end of a connecting region between two adjacent doors of the cabinet. The separator is adapted to restrict infiltration of outside air in a conservation space behind the doors of the cabinet upon opening at least one of the doors.
A smoke detector system is provided and includes a smoke detection element; and at least one of a door sensor and a window sensor. The smoke detection element is communicative with the at least one of the door sensor and the window sensor and is configured to read a status of the at least one of the door sensor and the window sensor and to take action related to one or more of remote user notification of status, change in monitoring of parameters and local user indication related to sensor status.
A detector unit for use in a fire detection system is provided, comprising: a sensor for monitoring an environmental condition; an indicator for generating a visible indication; and a controller in connection with the sensor and the indicator, wherein the controller is configured to communicate with a fire alarm control panel of the fire detection system; wherein the controller is configured to operate the detector unit in a testing mode, the testing mode being for testing a response of the fire detection system to an environmental condition that is indicative of a fire; and wherein the controller is configured to cause the indicator to indicate an outcome of a test carried out on the detector unit when the detector unit is operating in the testing mode.
A method of operating a sensor in wireless communication with a thermostat of a heating, ventilation, and air conditioning (HVAC) system including: activating a first sensor antenna and a second sensor antenna to detect a first wireless signal transmitted from the thermostat of the HVAC system; detecting the first wireless signal using the first sensor antenna and the second sensor antenna; determining a first strength of the first wireless signal as detected by the first sensor antenna and a second strength of the first wireless signal as detected by the second sensor antenna; comparing the second signal strength to the first signal strength to determine which is greater; and detecting future wireless signals transmitted from the thermostat for a first selected period of time using the first sensor antenna if the first signal strength is greater or the second sensor antenna if the second signal strength is greater.
The present application provides an optical filter, and a test assembly and method for a smoke detector. The optical filter comprises: a support; and a screen supported by the support, wherein the screen is composed of wires and mesh holes are defined between the wires, and the screen has a first side and a second side opposite to each other; wherein, the smoke detector comprises a light transmitter and a light receiver arranged in vicinity and an light reflector arranged opposite to the light transmitter and the light receiver, such that light emitted by the light transmitter is reflected to the light receiver via the light reflector; and wherein, during testing, the optical filter is arranged in both the light path from the light transmitter to the light reflector and the light path from the light reflector to the light receiver.
A driver circuit and a method of supplying a constant current to the light emitter of the smoke detector are disclosed. The driver circuit includes a transistor, and a controller. The collector terminal of the transistor is connected to the light emitter and a resistor is connected to the emitter terminal. During the manufacturing stage, the controller monitors and stores the values of first base voltage to be supplied to the base terminal to supply a constant current to the light emitter, and first resistor voltage across the resistor when the first base voltage is supplied to the base terminal. Before each smoke detection process, the controller processes the stored data and adjusts the base voltage to be supplied to the base terminal to enable the transistor to supply the constant current to the light emitter, regardless of the temperature around the smoke detector.
A method for managing mileage capacity of a BEV having a TRU includes obtaining live vehicle data via an ECU of the BEV and determining a rate of consumption of energy stored in the energy storage unit and an efficiency of BEV's components based on the live vehicle data. The method further includes triggering an operation mode of the BEV based on the determined rate of consumption of energy and the efficiency, and thereafter controlling a cooling and a heating capacity of the TRU based on the triggered operation mode. The method includes optimizing the rate of the consumption of energy based on the controlled cooling and the heating capacity of the TRU and then notifying a message indicating current operating modes of the BEV and activation of an energy saving mode to a user of the BEV via one of a HMI, mobile application, or a visual indicator.
B60L 58/16 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
29.
METHOD OF EVALUATING REFRIGERANT CHARGE WITHIN A REFRIGERATION CIRCUIT
A method of evaluating refrigerant charge within a refrigeration circuit. The method comprises: measuring a quantity of liquid refrigerant within a flash tank of the refrigeration circuit; determining an expected quantity of liquid refrigerant within the flash tank; comparing the expected quantity with the measured quantity of liquid refrigerant within the flash tank; and evaluating the refrigerant charge within the refrigeration circuit based on the comparison. By virtue of this method, the refrigerant charge in the refrigeration circuit can be evaluated quickly and reliably without significant operative intervention.
An enclosure for an electronic device comprising at least a portion of the enclosure made up of at least one layer of a covering material, at least one layer of aluminum metal or alloy, at least one layer of an electrolyte gel, and at least one layer of activated carbon coated steel mesh. The at least one layer of aluminum metal or alloy, the at least one layer of an electrolyte gel, and the at least one layer of activated carbon coated steel mesh act together as an energy storage device.
H01M 50/138 - Primary casings, jackets or wrappings of a single cell or a single battery adapted for specific cells, e.g. electrochemical cells operating at high temperature
H01M 12/06 - Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type with one metallic and one gaseous electrode
A cap for a light emitter and/or light receiver of a smoke detector for eliminating a direct line of sight between the light emitter and the light receiver is disclosed. The cap comprises an enclosure of a predefined profile having a predetermined open area at a predetermined position on the enclosure, which is adapted to be removably fitted over one or more of the light emitter and/or the light receiver. The cap upon fitting over any of the light emitter and the light receiver, the cap blocks a direct line of sight between the light emitter and the light receiver and allows the light receiver to receive only the light being reflected by smoke and a predefined amount of clean air signal present within the smoke detector.
A heat pump system comprises: an indoor unit comprising an air conditioning unit and a refrigeration cabinet unit, and an outdoor unit comprising a compressor unit, an outdoor heat exchange unit, and a switching device for selectively connecting the exhaust end of the compressor unit to one of the air conditioning unit and the outdoor heat exchange unit, and connecting the suction end of the compressor unit to the other of the air conditioning unit and the outdoor heat exchange unit; wherein, the outdoor throttling device side of the outdoor heat exchange unit is respectively connected to the first port of the air conditioning unit and the first port of the refrigeration cabinet unit, and the second port of the refrigeration cabinet unit is connected to the suction end of the compressor unit.
A vertical door latch assembly includes a housing and a bolt movably attached to the housing having a catch portion. A drive motor is located within the housing and is configured to selectively move a lock assembly between a locked position preventing movement of the bolt and an unlocked position allowing movement of the bolt. A battery assembly is removable from the housing when the lock assembly is in first position and fixed to the housing when the lock assembly is in a second position. A controller is in electrical communication with the drive motor and is configured to direct the actuator lock assembly between the locked position and the unlocked position.
Aspects of the invention are directed towards method, system and devices assisting a user in providing seamless access to a user through accessing devices of any premises related to any event. A user terminal is configured to receive one or more alerts related to an event on a social media platform. The event is subscribed by the user. On successful subscription, the user is configured to receive access credentials related to an event on the user terminal which may be further linked with the social media account of the user.
A vapor compression system and method for operating the vapor compression system are provided. The vapor compression system includes a compressor, a condenser, and at least one check valve disposed between the compressor and the condenser. The method provides for the transmitting of a shutdown command to the compressor, the compressor including a rotating shaft and a magnetic bearing, the magnetic bearing having an active mode and an inactive mode, the magnetic bearing levitating the rotating shaft in the active mode. The method further provides for the maintaining of the magnetic bearing in the active mode during a minimum time period, the magnetic bearing switching from the active mode to the inactive mode after the minimum time period is reached.
An air conditioning system is provided and includes a unit receptive of refrigerant having a moderate-to-low global warming potential (GWP) value for thermal interaction with a fluid, an enclosure, a fan disposed and configured for urging a flow of the fluid through the unit, a refrigerant detection sensor and a controller. The refrigerant detection sensor is disposed in the enclosure to be operable in a first mode in which a baseline response is established and a second mode in which refrigerant leak detection is executed based on the baseline response. The refrigerant detection sensor is further configured to generate a binary output of leak and non-leak signals in accordance with a result of the refrigerant leak detection. The controller is configured to control operations of the fan and the vent based on the binary output.
F24F 11/36 - Responding to malfunctions or emergencies to leakage of heat-exchange fluid
F24F 11/77 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
F24F 11/89 - Arrangement or mounting of control or safety devices
G01N 21/3504 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
F24F 11/30 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
Aspects of the invention are directed towards a system and a method for providing access of an accessing device to a user. One or more embodiments of the invention describe the method comprising steps of detecting a charged status of a battery of a user device and prompting a user of the user device to define credentials when the charged status of the battery reaches below a pre-determined threshold. One or more embodiments of the invention further describe steps of receiving the defined credentials from the user to access an accessing device and transmitting the defined credentials to a server for providing access of the accessing device to the user.
A battery carrier according to an example of the present disclosure includes an elongated body having opposing first and second walls that extend longitudinally between a first end portion and a second end portion of the elongated body. A handle extends outwards from the first end portion. First and second sloped walls extend between the first and second end portions and at least partially define respective battery recesses. Each sloped wall is sloped inwardly from a respective side of the first wall to the second wall.
H01M 50/213 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
H01M 50/262 - Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
A method of manufacturing a display cabinet for a refrigerated display, comprising: assembling a cabinet frame configured to have a refrigeration component installed at either of both a rear portion and a base portion of the cabinet frame; selecting from both the rear portion and the base portion either the rear portion or the base portion of the cabinet frame for installation of the refrigeration component and installing the refrigeration component in the selected portion.
An accumulator heat exchanger comprising: an accumulator vessel with an internal volume; a heat exchange coil disposed within the internal volume of the accumulator vessel wherein the heat exchange coil encloses an axially extending inner volume; a first inlet conduit extending from outside of the accumulator vessel to an inner axial end of the first inlet conduit within the internal volume of the accumulator vessel, and a first outlet conduit extending from within the internal volume of the accumulator vessel to outside of the accumulator vessel; and a second inlet conduit for subcooled refrigerant fluid and a second outlet conduit for subcooled refrigerant fluid. The second inlet conduit and second outlet conduit provide an inlet and outlet flow path for the heat exchange coil. The first inlet conduit comprises a plurality of outlets, each adapted to direct refrigerant fluid towards the heat exchange coil.
F25B 43/00 - Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
F28D 1/047 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or mo with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
A smoke detector is provided and includes a housing defining a chamber for receiving ambient materials, a single receiver, first and second emitters configured to emit light into the chamber to be respectively scattered from the ambient materials toward the single receiver with back scatter and forward scatter effects, respectively, and a controller. The single receiver generates first and second output signals in accordance with the light respectively scattered toward the single receiver with the back and forward scatter effects, respectively. The controller is receptive of the first and second output signals and determines whether a condition is appropriate to trigger an alarm.
A gas sensor assembly is disclosed. In some embodiments, the gas sensor assembly comprises a sensor housing, the sensor housing configured to house a gas sensor and a sensor circuit, wherein the gas sensor and the sensor circuit are configured to be detachably connected. The gas sensor assembly further comprises a cover, the cover configured to be detachably connected to the sensor housing, wherein the cover is configured to hold the gas sensor in place within the sensor housing.
A gas purification assembly for an air-conditioning indoor unit, the gas purification assembly comprising: a filter device arranged at or near an air inlet end of the air-conditioning indoor unit, for filtering particles entrained in the gas entering through the air inlet end; an ion generator located downstream of the filter device along the gas flow direction, for increasing the content of positive and/or negative ions in the gas flow; an atomizing device located downstream of the ion generator along the gas flow direction, for increasing the humidity and the amount of ions of the gas flow, and eliminating the ozone generated by the ion generator; and a photocatalytic device located downstream of the atomizing device along the gas flow direction, for performing a photocatalytic reaction on the humidified gas flow. An air-conditioning indoor unit equipped with the gas purification assembly is also disclosed.
F24F 8/30 - Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
F24F 8/108 - Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
F24F 8/167 - Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
F24F 6/12 - Air-humidification by forming water dispersions in the air
A transport refrigeration system is provided comprising a cargo container and a transport refrigeration unit arranged to cool the cargo container. The cargo container is equipped with a mobile bulkhead that partitions the interior of the cargo container. The transport refrigeration unit comprises a heat-absorbing heat exchanger positioned in fluid communication with the interior of the cargo container. The transport refrigeration system is further provided with a sensor configured to determine a distance between the mobile bulkhead and the heat-absorbing heat exchanger. A method of operating a transport refrigeration system is also provided.
A method of operating a transport refrigeration unit of a vehicle comprises determining a vehicle route from a current location of the vehicle to a final destination of the vehicle; determining whether to operate a refrigeration system of the transport refrigeration unit in a normal mode or an economy mode; and operating the refrigeration system in the economy mode.
A vertical door latch assembly includes a housing and a bolt movably attached to the housing having a catch portion. A drive motor is located within the housing and is configured to selectively move a lock assembly between a locked position preventing movement of the bolt and an unlocked position allowing movement of the bolt. A controller is in electrical communication with the drive motor and is configured to direct the actuator lock assembly between the locked position and the unlocked position.
A deflector for a condenser. The condenser has an inlet in communication with a compressor, and a deflector for guiding a refrigerant gas flow from the compressor is arranged in the condenser and at a position close to the inlet. The deflector is provided with a deflecting structure projecting toward the inlet, and the deflecting structure is configured as impermeable to the refrigerant gas flow.
F28D 3/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freel with tubular conduits
A vehicle for transporting goods and a method of operating a power system of the vehicle are described. The vehicle comprises an axle; transport refrigeration unit; and power system. The power system comprises an energy storage device; a generator to generate electrical power and to supply electrical power to the energy storage device; a multi-speed gearbox mechanically coupling the axle to the generator; and a controller to receive data indicative of a speed of the vehicle and a state-of-charge of the energy storage device, and to control the multi-speed gearbox. The controller is configured to set a gear ratio of the multi-speed gearbox to a speed-based gear ratio when the vehicle is in a first state, wherein the speed-based gear ratio is selected based on the speed of the vehicle, and wherein the state-of-charge of the energy storage device is below a first charge threshold in the first state.
B60R 16/03 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for supply of electrical power to vehicle subsystems
B60H 1/00 - Heating, cooling or ventilating devices
F16H 61/02 - Control functions within change-speed- or reversing-gearings for conveying rotary motion characterised by the signals used
54.
TRANSPORT REFRIGERATION SYSTEM WITH A THERMAL MANAGEMENT SYSTEM
A transport refrigeration system comprises a refrigeration circuit and a thermal management system. The refrigeration circuit comprises a compressor, a high pressure side heat exchanger on a high pressure side of the compressor, and a low pressure side heat exchanger on a low pressure side of the compressor. The thermal management system comprises a high pressure side fluid circuit comprising a first pump circulating a working fluid, and a first component heat exchanger for heating and/or cooling a first electronic component. The thermal management system also comprises a low pressure side fluid circuit comprising a second pump circulating a working fluid, and a second component heat exchanger for cooling a second electronic component. The high pressure side fluid circuit is in a heat exchange relationship with the refrigeration circuit, and the low pressure side fluid circuit is in a heat exchange relationship with the refrigeration circuit.
A method for controlling power to a condenser fan of a transport refrigeration unit (TRU) includes disconnecting power to the condenser fan; detecting a fan voltage produced by back emf of the condenser fan; obtaining an input volume flow rate corresponding to airflow over a condenser in response to the fan voltage; comparing the input volume flow rate to a lower limit volume flow rate; disconnecting power to the condenser fan when the input volume flow rate is greater than the lower limit volume flow rate.
A multiple tube bank heat exchanger includes a first tube bank including at least a first and a second flattened tube segments extending longitudinally in spaced parallel relationship and a second tube bank including at least a first and a second flattened tube segments extending longitudinally in spaced parallel relationship. The second tube bank is disposed behind the first tube bank with a leading edge of the second tube bank spaced from a trailing edge of the first tube bank. A continuous folded fin extends between the first and second flattened tube segments of both of said first tube bank and said second tube bank.
F28F 1/10 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or mo with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
F28F 17/00 - Removing ice or water from heat-exchange apparatus
B23P 15/26 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers
57.
CONDENSATION MONITORING IN ASPIRATING SMOKE DETECTION SYSTEMS
The aspirating detection system (1) comprises: a central detection unit (7) configured to analyse sample air from the monitored environment (100); a sampling pipe (5) for providing the sample air to the central detection unit (7) from the monitored environment (100), wherein the central detection unit (7) is configured to draw the sample air along the sampling pipe (5); at least one ambient temperature sensor (110a, 110c, 110d) configured to sense an ambient temperature value corresponding to an ambient temperature outside of the aspirating detection system (1); at least one sample air temperature sensor (100b, 100c, 110d) configured to sense a sample air temperature value corresponding to a temperature of the sample air; and a controller (105) configured to determine a condensation occurrence condition is met when a difference between the sample air temperature value and a corresponding ambient air temperature value exceeds a condensation threshold value.
An air-handling system is provided and includes an air-handling unit (AHU) which outputs exhaust air with relatively high CO2 content, a cooling tower, which is receptive of the exhaust air from the AHU and which is configured to cool water in the exhaust air and to output exhausted air with the relatively high CO2 content and relatively high water content, and a duct. The duct is receptive of the exhausted air from the cooling tower and includes an air-conversion element configured to convert the exhausted air into fuel and air with relatively low CO2 and water content and relatively high oxygen (O2) content. The duct is configured to direct the air into the AHU.
An active harmonic filter (AHF) compensation assembly is provided. The AHF compensation assembly includes first wiring carrying input current, second wiring carrying output current and being electrically coupled to the first wiring for reception of the input current and first and second AHFs. The first AHF determines a first harmonic component of the output current and outputs a first signal configured to cancel the first harmonic component to the first wiring at a first location defined along the first wiring. The second AHF determines a second harmonic component of the output current and outputs a second signal configured to cancel the second harmonic component to the first wiring at a second location defined along the first wiring upstream from the first location.
A transport refrigeration system includes a compressor, condenser and evaporator; an inverter providing a multiphase, AC output voltage to the compressor; and a DC power system having an output coupled to the inverter, the DC power system including: a primary power source; a DC-AC converter connected to the primary power source; a transformer connected to the DC-AC converter; an AC-DC converter connected to the transformer, the AC-DC converter outputting a primary DC voltage; a secondary power source; and a DC-DC converter connected to the secondary power source, the DC-DC converter outputting a secondary DC voltage; a combination of the primary DC voltage and the secondary DC voltage provides the output of the DC power system.
H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
H02M 7/5387 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
61.
HUMIDIFIER WITH INTEGRATED WATER HARDNESS MEASURING DEVICE FOR HUMIDIFIER PAD PROGNOSIS
A method of monitoring heating, ventilation and air conditioning (HVAC) equipment is provided. The method includes installing a part into the HVAC equipment, installing a sensor into the HVAC equipment for sensing a parameter which is indicative of a condition of the part, setting a lifespan of the part, adjusting the lifespan in accordance with readings generated by the sensor and issuing an alert as to an adjustment in the lifespan.
F24F 11/30 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
F24F 3/14 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by dehumidification
62.
FILTER SUPPORTING ASSEMBLY AND AIR CONDITIONING SYSTEM
A filter screen supporting assembly comprises: a substrate and a support plate, wherein the first side of the support plate is pivotally connected to the substrate, and the second side of the support plate is detachably connected to the substrate, so that the support plate fills at least a part of the slot of the substrate to support the filter screen; wherein, the substrate and/or the support plate are provided with additional supporting piece, such that after a connection between the second side of the support plate and the substrate is removed when the filter screen is replaced, the support plate is supported by the additional supporting piece so that the support plate retains its support for the filter screen, and after the support from the additional supporting piece is removed, the support plate pivots to allow the filter screen to pass through the slot.
F24F 8/108 - Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
F24F 7/003 - Ventilation in combination with air cleaning
B01D 29/00 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups ; Filtering elements therefor
63.
FUEL CELL ARCHITECTURE FOR TRANSPORT REFRIGERATION UNIT
A transport refrigeration system includes a tractor, a container connected to the tractor, a refrigeration unit for conditioning a compartment of the container, a first power system associated with the cargo container and operably coupled to the refrigeration unit, and a second power system associated with the tractor. One or more components are shared between the first power system and the second power system.
B60L 50/70 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
A portable cooling system for cooling a compartment containing perishable items includes a fluid source including a cryogenic fluid and a heat exchanger assembly. The heat exchanger assembly includes a heat exchanger arranged in fluid communication with the fluid source to form a closed loop and a fan associated with the heat exchanger and operable to move an air flow across the heat exchanger.
In embodiments of the disclosure, a distributed thermostat includes a controller unit that houses a controller operable to control operation of a heating, ventilation, and air conditioning (HVAC) system. The controller is further operable to receive environmental information from a sensor network that is distributed from the controller unit; receive user inputs from a user interface application that is distributed from the controller unit; and control the operation of the HVAC system based at least in part on the environmental information and the user inputs.
F24F 11/54 - Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
In embodiments of the disclosure, an occupancy detector includes a processor operable to perform processor operations that include receiving audio signals from a plurality of sources; performing analysis on the audio signals; and, based at least in part on a result of the analysis performed on the audio signals, making a determination of the audio signals that resulted from an action of a person located within an indoor area-under-evaluation.
A fire suppression system is disclosed. The fire suppression system comprises a first storage cylinder configured for storing a first suppression solution. The system comprises a second storage cylinder operatively connected to the first storage cylinder. The second storage cylinder is configured for storing a second suppression solution, wherein in response to a detection of a fire condition, the first storage cylinder is configured to release the first solution into the second storage cylinder to cause the second solution to be delivered first during a first phase of a discharge.
A brazing apparatus to join a first component and a second component includes a heating element configured to melt a ring located at a joint between the first component and the second component, and a probe configured to contact the ring. A position of the probe is biased toward the ring. The probe is installed at a probe support. The probe is movable along a probe central axis relative to the probe support. A sensor is operably connected to the probe and is configured to determine movement of the probe along the probe central axis. The movement of the probe is indicative of melting of the ring.
Disclosed is a transportation refrigeration system including a transportation refrigeration unit configured to maintain a temperature in a refrigerated cargo space and comprising a refrigerant expansion device, a refrigerant heat absorption heat exchanger, a refrigerant compression device, and a refrigerant heat rejection heat exchanger; and a refrigeration augmentation unit comprising a water tank having an outlet, and a water droplet generator in fluid communication with a water tank outlet and configured to disperse water droplets into an air stream flowing to the refrigerant heat rejection heat exchanger. Also disclosed are methods of using the transportation refrigeration system.
A multi-compartment transport refrigeration system includes a cooling circuit and a hot gas flow path. The hot gas flow path includes an inlet located on the cooling circuit between the compressor and the heat rejection heat exchanger valve; a first outlet located between the first evaporator expansion device and the first evaporator inlet; a second outlet located between the second evaporator expansion device and the second evaporator inlet; a proportional valve downstream of the hot gas flow path inlet; a first evaporator valve located between the proportional valve and the first outlet; and a second evaporator valve located between the proportional valve and the second outlet.
A refrigeration transport system including a power source providing a power flow to a demand component, wherein the demand component is operatively coupled to a capacitor; and a controller configured to actively discharge the capacitor when the power flow is interrupted.
A heating, ventilation, and air conditioning (HVAC) system includes a vapor compression cycle comprising a microchannel heat exchanger. A fluid is configured to circulate within the vapor compression cycle in a first direction during a first mode and is configured to circulate within the vapor compression cycle in a second, opposite direction during a second mode. A receiver is integrally formed with the microchannel heat exchanger.
F24F 1/0067 - Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
F24F 3/00 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or mo with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
An actuation mechanism for use in a fire suppression system includes a housing and a plunger operably coupled to and movable relative to the housing. A tension member is operably coupled to the plunger and applies a tension to the plunger in a first direction. A force generating component is operably coupled to the plunger. A stopper is movably coupled to the housing and is operable in combination with the force generating component to apply a force on the plunger in a second direction.
A62C 37/42 - Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with mechanical connection between sensor and actuator, e.g. rods, levers
A modular cooling system comprising a plurality of chiller modules and a coolant circuit with flow paths having parts in each of the plurality of chiller modules. The coolant circuit cools a working fluid to meet a cooling demand, and the working fluid can be cooled in heat exchange with the heat absorbing heat exchangers of the free cooling circuits and heat exchange with the heat absorbing heat exchangers of the refrigeration circuits. The flow paths of the coolant circuit connect to the heat absorbing heat exchangers of the free cooling circuits in parallel and connect to the heat absorbing heat exchangers of the refrigeration circuits in series. The coolant circuit flow paths split along parallel flows through the heat absorbing heat exchangers of the free cooling circuits before recombining to flow sequentially in a combined flow path through the heat absorbing heat exchangers of the refrigeration circuits.
A transport refrigeration unit includes a fan and nozzle unit, a heat exchanger coil, and an axial fan having a vertically oriented fan axis. The axial fan is positioned within the fan and nozzle unit to draw air through the heat exchanger coil and discharge the air vertically upwards. A mounting bracket is used to mount the axial fan in the fan and nozzle unit. The mounting bracket includes a main support member having an opposing first surface and second surface and a through hole and at least one sidewall integrally formed with and extending from the second surface. The at least one sidewall has a smooth front surface and a curvature of the front surface facilitates flow towards a fan inlet.
F25D 19/00 - Arrangement or mounting of refrigeration units with respect to devices
F25D 11/00 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators
F25D 17/06 - Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating gas, e.g. by natural convection by forced circulation
76.
HVAC UNIT PRESSURE, VACUUM AND CHARGING APPARATUS AND METHOD
A testing and charging system for a heating, ventilation and air conditioning (HVAC) system includes a testing and charging apparatus operably connectible to a refrigerant line of the HVAC system, an inert gas supply operably connected to the testing and charging apparatus, a refrigerant supply operably connected to the testing and charging apparatus, and a controller. The controller is configured to command the testing and charging apparatus to perform a pressure test of the HVAC system, command the testing and charging system to perform a vacuum test of the HVAC system, and command the testing and charging system to charge the HVAC system with refrigerant.
An active fault detection system for a heating, ventilation, and air conditioning system is disclosed. In some embodiments, the system comprises at least one processor; and memory storing instructions, when executed cause the system to: obtain system data related to operation of one or more components of the HVAC system; determine a fault probability based on the system data, the fault probability indicating a probability of a fault in the HVAC system; send a control signal to a component of the HVAC system to modify one or more control parameters of the component responsive to the fault probability being within a fault threshold range, the threshold range having an upper and lower threshold values; update the determined fault probability based on updated system data resulting from modifying the one or more control parameters; and generate a service schedule responsive to the updated fault probability being above the upper threshold value.
An electronic air cleaner includes a control housing including an ion generation device and a brush array having at least one brush assembly extending therefrom. The brush array is connectable to the control housing in both a first configuration and a second configuration.
The invention relates to a heat exchange fin, with a tube hole formed thereon for a heat exchange tube to be inserted into. A corrugated structure is arranged near the tube hole. The corrugated structure comprises a wave section arranged along a flow direction of fluid medium. The distance between two adjacent wave crests or wave troughs of the wave section is one wavelength. The total length of the wave section is 1-1.5 times the wavelength. A bridge plate is arranged at the wave crests and wave troughs of the wave section, respectively. The bridge plate deflects relative to the wave crests and wave troughs by a preset distance. The invention also proposes a heat exchanger configured with the heat exchange fins, and a heat pump system configured with the heat exchanger.
F28F 1/32 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
80.
CENTRIFUGAL COMPRESSOR FOR REFRIGERATION SYSTEM AND REFRIGERATION SYSTEM
The present application provides a centrifugal compressor for a refrigeration system and a refrigeration system. The centrifugal compressor has a reverse braking function and comprises: a rotor shaft; a compressor impeller connected to the rotor shaft; a brake component on the rotor shaft, wherein a periphery of the brake component is made of magnetic conductive material; a plurality of sets of electromagnets fixedly arranged at radial outward of the brake component; a sensor device for sensing a rotational speed and direction of the rotor shaft; and a controller connected to the sensor device, wherein the controller receives signals from the sensor device and supplies power to the plurality of sets of electromagnets based on the signals. The centrifugal compressor and refrigeration system according to the various embodiments effectively suppress the reverse rotation of the compressor rotor shaft caused by the reverse airflow during unexpected shutdown.
A heat exchanger includes a heat exchanger shell formed from a first metal material, and a plurality of heat exchanger tubes extending through a plurality of tube openings in the heat exchanger shell. The plurality of heat exchanger tubes are formed from a second metal material different from the first metal material. A galvanic isolator is located at each tube opening of the plurality of tube openings, radially between the tube opening and the corresponding heat exchanger tube of the plurality of heat exchanger tubes. The galvanic isolator is configured to mitigate a galvanic reaction between the heat exchanger shell and the plurality of heat exchanger tubes.
A method of calibrating an optical detector includes installing a calibration system within at least one sensing volume of the optical detector, filling a chamber of the calibration system with a material to achieve a known obscuration, and measuring an obscuration of the material within the chamber.
A refrigeration system includes a vapor compression loop and a purge system in communication with the vapor compression loop. The purge system includes at least one separator for separating contaminants from a purge gas provided from the vapor compression loop to the separator. The at least one separator has a vertical orientation.
F25B 43/04 - Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases
F25B 43/00 - Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
An activation system includes a housing and a pulley mounted to the housing. The pulley is rotatable about an axis. An activation member is movable between a first position and a second position relative to the pulley to selectively couple to the pulley. When the activation member and the pulley are coupled, rotation of the pulley about the axis is restricted. A first tension member is operably coupled to the activation member and a first tension of the first tension member maintains the activation member in engagement with the pulley. At least one second tension member is wrapped about at least one of the pulley and the activation member and has a second tension acting on the at least one of the pulley and the activation member.
A62C 3/00 - Fire prevention, containment or extinguishing specially adapted for particular objects or places
F16H 19/06 - Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary motion and reciprocating motion comprising an endless flexible member
87.
EMI PROTECTED ENCLOSURE WITH INTEGRAL INDICATOR-LIGHT GUIDES FOR GAS DETECTORS
An enclosure for gas detectors is disclosed. In some embodiments, the enclosure is configured to house a gas sensor. The enclosure comprises a cover configured to be detachably connected to the enclosure. The cover comprises one or more openings configured for providing a Faraday cage; and a top layer configured for covering the one or more openings and guiding an indicator light from inside the enclosure to outside the enclosure.
A blower includes a fan wheel and a blower housing. The blower housing includes a first housing portion and a second housing portion. The second housing portion is removably connectable to the first housing portion to define a hollow interior therebetween configured to receive a fan wheel, wherein an interface between the first housing portion and the second housing portion is arranged at a central plane of the blower housing.
A photoacoustic detection system includes a detector that has a chamber, a pulsed light source, piezoelectric tuning forks, and a photosensor. The chamber has an inlet and an outlet for flow of an analyte. The pulsed light source is adjacent the chamber and is operable to emit a light beam along a path through the chamber. The tuning forks are arranged along the path, and each of the tuning forks is operable to emit first sensor signals. The photosensor is arranged along the path and is operable to emit second sensor signals. A controller is connected to receive the first and second sensor signals. The controller is configured to determine whether a target species is present in the analyte based on the first sensor signals and determine whether the target species is present in the analyte based on the second sensor signals.
An assembly includes a base pan having an opening formed therein and an insert mountable to the base pan within the opening. The insert is connectable to a compressor.
A method of testing temperature sensors of refrigerated cargo spaces, comprising: installing a wireless temperature sensor in proximity of a cargo space temperature sensor of a refrigerated cargo space; receiving, at a data processing device, temperature data from both the cargo space temperature sensor and the wireless temperature sensor; calculating a temperature difference between the temperature measured by the cargo space temperature sensor and the wireless temperature sensor; and calibrating or replacing the cargo space temperature sensor if the temperature difference exceeds a threshold difference.
B62D 21/20 - Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups trailer type, i.e. a frame specifically constructed for use in a non-powered vehicle
A method for operating a heat pump (20; 300) includes operating in a cooling mode wherein heat is absorbed by refrigerant in the indoor heat exchanger (26) and rejected by refrigerant in the outdoor heat exchanger (24). The heat pump switches to operation in a heating mode wherein heat is rejected by refrigerant in the indoor heat exchanger, heat is absorbed by refrigerant in the outdoor heat exchanger, and there is an ejector (60) motive flow and ejector secondary flow. In the heating mode a refrigerant pressure (PH) or temperature (TL) is measured and, responsive to the measured refrigerant pressure or temperature, at least one of a fan speed is changed and a needle (132) of the ejector is actuated.
An electrical power supply system for an electric transport refrigeration unit. The electrical power supply system is for providing AC power to a refrigeration system and includes: a DC power source for providing a DC voltage via a low voltage line and a high voltage line; an inverter for receiving the DC voltage and converting it to a three phase AC voltage for powering the refrigeration system; and an electromagnetic compatibility, EMC, filter between the inverter and the refrigeration system. The EMC filter uses a common mode current path that connects to a DC link, where the DC link is provided between the high voltage line and the low voltage line of the DC power source. The common mode current path is hence coupled to the DC link in order to provide a floating current connection for common mode current from the EMC filter.
B60R 16/03 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for supply of electrical power to vehicle subsystems
F25D 11/00 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
A method of measuring the quantity of refrigerant in a refrigeration circuit of a transportation refrigeration unit (TRU). The refrigeration circuit comprises a compressor, a condenser, a receiver, an expansion valve and an evaporator sequentially fluidly connected in a circuit. The method comprises: running the refrigeration circuit in a recovery mode to accumulate the refrigerant in the refrigeration circuit within the receiver; and measuring the quantity of the refrigerant in the refrigeration circuit once it has accumulated within the receiver.
An accumulator heat exchanger comprising an accumulator vessel with an internal volume for accumulation of refrigerant fluid. The accumulator vessel has a first inlet conduit for gaseous refrigerant and a first outlet conduit for superheated gaseous refrigerant; a heat exchange coil disposed within the accumulator vessel. The heat exchange coil has a second inlet conduit for subcooled refrigerant fluid and a second outlet conduit for subcooled refrigerant fluid. The second inlet conduit and second outlet conduit provide an inlet and outlet flow path for the heat exchange coil. A separator plate covers a cross-section of the inner volume of the heat exchange coil.
A method of controlling a field of view of a passive infrared sensor, the method comprising: providing a passive infrared sensor comprising: an infrared detector configured to detect infrared signals from a plurality of detection zones; and an electrochromic mask comprising a plurality of electrochromic sections; and applying a voltage to one or more of the plurality of electrochromic sections to control transmission of a predetermined range of infrared signals to the detector from one or more of the plurality of detection zones.
G01J 5/10 - Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
G01J 5/0806 - Focusing or collimating elements, e.g. lenses or concave mirrors
G02F 1/163 - Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
G02F 1/13 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
A method of operating a component of a transport refrigeration unit (TRU) of a vehicle is provided. The method includes determining whether an engine parameter value of the vehicle exceeds a predefined level, computing a vehicle parameter value from the engine parameter value if the engine parameter value exceeds the predefined level, obtaining a nominal value of the vehicle parameter value for which the component is rated, determining whether the vehicle parameter value is equal to or greater than the nominal value and switching the component off if the vehicle parameter value is equal to or greater than the nominal value.
Disclosed is a muffler for a water-cooled chiller or air-cooled of a vapor-compression or absorption refrigeration system, the muffler having: an upstream case having a fluid inlet; a downstream case connected to the upstream case at a downstream end of the upstream case, the downstream case having a fluid outlet; the upstream case having a plurality of axially adjacent outer muffler rings and a plurality of axially adjacent inner muffler rings, the outer muffler rings being axially coextensive and a radially exterior to the inner muffler rings and defining a fluid inlet passage therebetween, wherein the outer muffler rings and inner muffler rings are a metal mesh material.
A heat pump system comprises: a compressor having a compressor inlet and a compressor outlet; a change-over valve configured to selectively connect the compressor inlet and the compressor outlet to a first flow path and a second flow path; a heat-source-side heat exchanger on the first flow path; a user-side heat exchanger on the second flow path; a first branch and a second branch between the first flow path and the second flow path, the first branch having a three-way valve, and the second branch having a two throttling devices, wherein the three-way valve has two ports for communicating with the first flow path and a third port for communicating with the second flow path; and a third branch connected between the first throttling device and the second throttling device and the second port of the three-way valve, where an economizer is provided on the third branch.
The refrigeration system comprises: a main flow path comprising a compressor, a condenser, a throttling device and an evaporator, wherein the compressor comprises at least a first compression stage and a second compression stage; and the refrigeration system further comprises: an ejector configured to eject low-pressure refrigerant from the evaporator by means of high-pressure refrigerant from the condenser and to mix them into medium-pressure gas-liquid two-phase refrigerant; and a separator configured to separate the medium-pressure gas-liquid two-phase refrigerant from the ejector into gas-phase refrigerant and liquid-phase refrigerant, to deliver the gas-phase refrigerant separated to a gas supply port between a fluid outlet of the first compression stage and a fluid inlet of the second compression stage in the compressor, and to deliver the liquid-phase refrigerant separated to a motor housing of the compressor for cooling a rotor and a stator in the motor housing by flash evaporation.
F25B 43/00 - Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
F25B 43/02 - Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant