A heating assembly for a water heater may include a base, a first electric heating element secured to the base, and a second electric heating element secured to the base. The second electric heating element is electrically isolated from the first electric heating element. The first and second electric heating elements are independently switchable to provide a first heat rating of the heating assembly and a second heat rating higher than the first heat rating. A water heater assembly may include a tank defining a chamber for holding a volume of water, and the heating assembly coupled to the tank. The water heater assembly may include a second heating assembly, and may further include a controller configured to control the first and second heating assemblies to provide heating at same or different heat ratings.
Bypass valves for pool heaters are disclosed. Embodiments may include pool heaters with a heat exchanger, a support, and an automatic bypass valve coupled to the support. The automatic bypass valve may include a cylindrical bypass shaft, and a bypass valve having a non-circular opening configured to receive the bypass shaft, where the bypass valve is configured to slide along the cylindrical bypass shaft responsive to water pressure in the heat exchanger, and where water and debris can flow through the non-circular opening when the bypass valve is in a closed position.
The systems and methods described herein allow for data produced by an HVAC device to be selectively shared with a third party, such as a contractor used to perform maintenance services on the HVAC device. The system and methods also allow for HVAC devices to be remotely configured to share data based on certain triggering conditions. Specifically, a controller built into an HVAC device may include a configuration file, which may dictate rules associated with collection and transmission of data by the HVAC device. A remote server may be configured to passively listen for data transmissions from any HVAC devices.
A heat pump water heater has a tank, a heat source, and a heat pump system. The heat pump system has a refrigerant path, at least a portion of which is in thermal communication with the water tank volume so that heat transfers from refrigerant to the water tank volume. A fan causes air to flow through a housing, and another portion of the refrigerant path includes an evaporator in the housing. The fan is within the housing and may further be within a second housing. The first housing may comprise a baffle to direct air flow. The fan may be a variable speed fan in communication with a controller, so that the controller controls the fan speed depending on a temperature of the refrigerant.
A heating system includes a water heater configured to heat water, a water recirculation loop configured to receive a first portion of hot water from the water heater and to provide the first portion of hot water back to the water heater, an air handler loop configured to receive a second portion of hot water from the water heater and to provide cooled water back to the water heater, and a controllable valve configured prevent the air handler from receiving the second portion of the hot water.
A heat exchanger system including a cabinet, a V-shaped round tube plate fin heat exchanger disposed within the cabinet, and an axial fan housing disposed within the cabinet and located downstream of the V-shaped round tube plate fin heat exchanger. The heat exchanger system also includes a first insulation disposed along a first portion of an inner periphery of the cabinet, a second insulation disposed along a second portion of the inner periphery of the cabinet, and a connecting member disposed along an abutment of the first insulation and the second insulation. The first portion located upstream of the V-shaped round tube plate fin heat exchanger and the second portion located downstream of the V-shaped round tube plate fin heat exchanger. A temperature of the air flowing through the second portion is less than a temperature of the air flowing through the first portion.
A product advertisement system includes (A) a plurality of miniature three-dimensional product models, wherein each product model (i) has a bottom surface, a top surface, and a side surface extending between the top and bottom surfaces; (ii) is a scaled replica of a full-size residential or commercial appliance; and (iii) has a hollow interior configuration with an opening in the bottom surface; and (B) a base configured to retain each product model in a single position thereon. Each product model is manually removable from and replaceable onto the base. The opening in the bottom surface of each product model has a unique shape, and the base includes projections that correspond to each of the openings, with each projection being sized and shaped to matingly engage with a single one of the openings of the product models to retain each product model in its single position on the base.
G09F 19/12 - Advertising or display means not otherwise provided for using special optical effects
G09F 3/00 - Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
G09F 9/30 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
The present disclosure provides an interface control relay module including a refrigerant sensor input connected to a refrigerant sensor of an air handling unit (AHU) that generates an input proportional to a concentration of a refrigerant leak in the AHU. The relay module further includes a control unit coupled to the refrigerant sensor input to receive the input from the refrigerant sensor; a first relay output and a second relay output, each connecting the control unit to a cooling unit of the AHU; a third relay output connecting the control unit to a fan of the AHU; and a fourth relay output connecting the control unit to a damper of the AHU. The control unit activates or deactivates at least one of the first relay output, the second relay output, the third relay output and the fourth relay output based on the input received from the refrigerant sensor.
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
10.
MAINTENANCE FREE LEAK STOP VALVE SYSTEMS AND METHODS OF USE THEREOF
The present disclosure is directed to systems and methods for automatically shutting off fluid flow through a fluid inlet line of a water heater upon detection of a leak of the water heater. The system may include an electrically powered shutoff assembly operatively coupled to the fluid inlet line, and a capacitor operatively coupled to the electrically powered shutoff assembly. The electrically powered shutoff assembly may be configured to shut off fluid flow through the fluid inlet line upon detection of a leak of the water heater, and the capacitor may be configured to store power received from an external power source. Accordingly, when the electrically powered shutoff assembly does not have access to electric power, the capacitor may power the electrically powered shutoff assembly to shut off fluid flow through the fluid inlet line.
The present disclosure is directed to a mechanical and powerless leak detection and shutoff system that may be used in any commercially available water heater, e.g., both gas and electric. The system includes a spring-loaded shutoff assembly having a valve member operatively coupled to a fluid inlet line of the water heater. A handle of the shutoff assembly is maintained in an open configuration via a latching mechanism until a force is applied to cause the latching mechanism to release the handle and actuate the valve member to shutoff fluid flow through the fluid inlet line. The shutoff assembly is operatively coupled to a leak detection assembly via a cable. The leak detection assembly uses a fluid-soluble material that dissolves when exposed to fluid to thereby pull the cable to apply the force to disengage the latching mechanism.
Heat pumps are often desired to be used over other types of HVAC units given their efficiency. In some cases, this efficiency may be further improved by using condensate that is naturally produced by an indoor coil of the heat pump when in a cooling mode. For example, any accumulate condensate may be “thrown” onto any components of the heat pump using a “slinger ring” attached to a fan inside the unit. However, this condensate accumulation may be problematic in a heating mode of the heat pump because the water may freeze and prevent the fan and/or corresponding motor from properly functioning. Thus, the systems and methods provided herein present a heat pump including a multi-layered basepan including an outdoor coil tray that allows condensate to be routed to the drain platform underneath the unit while limiting the ability of condensate to reach the slinger ring in the heating mode.
An exhaust conduit for neutralizing condensate from high efficiency gas storage water heaters is provided. The exhaust conduit includes an inlet configured to be coupled to an exhaust outlet of the heater, an outlet configured to be coupled to an exhaust vent, and a condensate chamber having an interior in fluidic communication with the inlet and the outlet. The condensate chamber has a lower portion configured to receive a neutralizer and an upper portion having a service port configured to provide access to the lower portion of the condensate chamber. The condensate chamber further includes a fluid outlet for draining the neutralized condensate via a drain line. The exhaust conduit has one or more ridges disposed in the chamber that are arranged to define a channel for directing condensate from the inlet across the neutralizer toward the fluid outlet.
Disclosed herein are evaporator assemblies for heat pump systems. The evaporator units can comprise a housing defining an interior chamber, an air inlet and an air outlet. The air inlet and the air outlet can form an air flow path through the interior chamber, and an evaporator unit can be positioned within the interior chamber such that the air flow path contacts the evaporator unit. The air inlet having a semi-circular cross section through which air flows into the interior chamber, the semi-circular cross section having a straight edge and a curved edge. A velocity magnitude of the air flowing from the air inlet into contact with the evaporator unit can deviate less than 0.1 m/s from the average air velocity across the surface area of the evaporator.
Systems and methods for detecting a power imbalance in a three-phase electric fluid heater and selectively deactivating heating elements to maintain functionality in a reduced power state are provided. Methods include detecting a faulty or malfunctioning heating element in a three-phase electrical connection, determining counterpart heating elements in non-faulty legs of the three-phase electrical connection, deactivating select heating elements in each non-faulty leg of the three-phase electrical connection, and maintaining output of the electrical heater at a reduced power setting. Similarly, heating elements in each leg may be selectively deactivated to reduce power consumption in a fluid heater system in response to reduced demand or grid requirements.
Disclosed herein are air conditioning systems including a refrigerant line configured to transport a refrigerant; a compressor in fluid communication with the suction line; and a controller in communication with a sensor configured to measure a characteristic of the refrigerant line. The compressor can be configured to move the refrigerant through the refrigerant line, and the refrigerant can have a first temperature at the outlet of the compressor. The controller can be configured to receive sensor data from the sensor indicating a current value associated with the characteristic of the refrigerant line; determine, based at least partially on the sensor data, that the characteristic of the refrigerant line is above a predetermined threshold; and output instructions for the compressor to perform one or more corrective actions.
The disclosed technology includes an air system including a first interlaced microchannel heat exchanger and a second interlaced microchannel heat exchanger. The air system can include a plurality of fluidly separated refrigerant circuits, and each of the refrigerant circuits can be configured to flow through the first interlaced microchannel heat exchanger and the second interlaced microchannel heat exchanger. The first interlaced microchannel heat exchanger can be located indoors, and the second interlaced microchannel heat exchanger can be located outdoors. Each of the refrigerant circuits can include its own compressor and expansion valve.
A heat pump water heater can include a refrigerant circuit, an evaporator coil in fluid communication with the refrigerant circuit, a fan configured to move air across the evaporator coil, one or more temperature sensors, a heating element located proximate an air flow path between the fan and the evaporator, and a controller. The controller can be configured to receive temperature data from the one or more temperature sensors and, in response to the temperature data, output instructions for the fan to move air across the heating element to the evaporator coil.
A system for controlling air flow in an air handling unit having an air mover is provided. The system includes a first and a second sensing device, each receiving a first input indicative of electric power and a second input indicative of properties of air, respectively. The system further includes a processing unit to determine heat generated from a motor of the air mover based on the first input, determine density of air based on the heat generated from the motor based on the second input, and determine an actual air flow rate based on the density of the air, a speed of the motor, and dimensional characteristics of the air handling unit. Further, the speed of the motor is controlled when the actual air flow rate is different from a target air flow rate.
F24F 11/75 - 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 for maintaining constant air flow rate or air velocity
F24F 11/76 - 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 means responsive to temperature, e.g. bimetal springs
20.
SYSTEMS AND METHODS FOR AUTOMATED FURNACE INDUCER SENSOR OUTPUT VERIFICATION
Disclosed are systems and methods for automated furnace inducer sensor output verification. A furnace may include a sensor, such as a transducer, that may be used to measure pressure within the furnace (for example, pressure resulting from the operation of a draft inducer blower and/or any other component of the furnace). It is possible that the data produced by the sensor may remain relatively fixed for a given period of time. However, this makes it difficult to determine if the data is valid or if the sensor is malfunctioning. Given this, an algorithm is used to change a motor speed of the inducer blower. The subsequent data that is produced by the sensor is then monitored to determine if an expected change in the data occurs. If the change does not occur, then it may be determined that the sensor is malfunctioning.
The disclosed technology includes an on-demand water heater which uses a heat pump to heat the fluid. The on-demand heat pump water heater can have a low fluid capacity heating chamber which has an inlet and an outlet, a heat pump for heating the fluid, and a controller to control the heat pump and maintain the temperature of the fluid at a predetermined temperature. The on-demand heat pump water heater can include one or more temperature sensors, flow sensors, fluid mixing valves, or supplemental heat sources.
The disclosed technology includes a heat pump having a thermal energy storage (TES) material. The heat pump can include a first heat exchanger to exchange heat between ambient air and refrigerant, a second heat exchanger to exchange heat between the refrigerant and air supplied to a climate-controlled space, and a third heat exchanger to exchange heat between the TES material and the refrigerant in a first fluid path and the refrigerant in a second fluid path. The heat pump can include a first compressor to circulate refrigerant to the first, second, and third heat exchangers and a second compressor to circulate refrigerant to the second and third heat exchangers. The first compressor can facilitate heat exchange between the ambient air and the TES material and the second compressor can facilitate heat exchange between the TES material and the air supplied to the climate-controlled space.
F24D 5/12 - Hot-air central heating systems; Exhaust-gas central heating systems using heat pumps
F24D 17/02 - Domestic hot-water supply systems using heat pumps
F25B 7/00 - Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
The present disclosure provides a louvered fin including a leading edge, a trailing edge, and a surface extending between the leading edge and the trailing edge. The surface defines a first set of holes along a first axis, a second set of holes along a second axis and offset from the first set of holes, and a third set of holes along a third axis and offset from the second set of holes. Each of the first axis, the second axis, and the third axis extends substantially parallel to a longitudinal axis of the fin. A first offset distance between the second and first set of holes is greater than a second offset distance between the third and second set of holes. The second and the third set of holes define a substantially obtuse trapezoidal matrix.
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
A combination water heating, air conditioning refrigerant system is described. The combined system includes a plurality of independently adjustable electronic expansion valves. The expansion valves can independently modulate the delivery of high-temperature, high-pressure refrigerant to either a water heat exchanger or an outside condenser. A controller can receive input signals, including temperature signals from one or more temperature sensors that indicate the temperature at various locations of the system. The temperature signals include one or more of water temperature signals, ambient air temperature signals, or refrigerant super heat temperatures signals. In response to the input signals, the controller can output control signals to one or more of the plurality of electronic expansion valves.
F25B 41/34 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
F25B 41/385 - Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator
F24F 1/022 - Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
F24H 1/52 - Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
F24H 9/14 - Arrangements for connecting different sections, e.g. in water heaters
26.
INTEGRATED REFRIGERANT CHARGE COLLECTOR FOR HEAT PUMPS
An integrated refrigerant charge collector for a heat pump system is provided. The charge collector includes an elongated housing, and a divider plate disposed within the elongated housing to define an accumulator compartment and a receiver compartment. A horizontal plane of the divider plate is perpendicular to a longitudinal axis of the elongated housing. The accumulator compartment is in fluid communication with a reversing valve and a compressor of the heat pump system, and allows a desired flow of a refrigerant charge into the compressor during a heating mode and a cooling mode. The receiver compartment is in fluid communication with an indoor coil and an outdoor coil of the heat pump system, and extracts a liquid refrigerant from a circuit of the heat pump system during the heating mode, and adds the liquid refrigerant to the circuit during the cooling mode.
A combustion system configured to receive fuel from a plurality of fuel sources, wherein the combustion system includes a burner, a shutter, a fuel selector, and an electronic controller configured to receive an indication of a selected fuel type from the fuel selector and output instructions for the shutter to adjust to a shutter position associated with the selected fuel type, the shutter position being configured to provide a predetermined supply of air to thereby effect an air-to-fuel ratio associated with combustion of the selected fuel type.
Devices and methods for controlling a heat pump system are presented. A method may include identifying, by a first device, a signal received from a second device associated with an outdoor portion of the heat pump system, the signal indicating that the heat pump system is performing a defrost operation; reducing, based on the defrost operation, a speed of a fan associated with an indoor portion of the heat pump system; identifying pressure data received from a pressure sensor during the defrost operation, the pressure data indicative of a suction line pressure of the heat pump system; determining, based on the pressure data, that the suction line pressure is below a threshold pressure, the threshold pressure greater than a low-pressure fault threshold; and increasing the speed of the fan based on the determination that the suction line pressure is below the threshold pressure.
F24F 11/72 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
29.
SYSTEMS AND METHODS FOR AUTOMATED POOL HEATING UNIT CONFIGURATIONS
Disclosed are systems and methods for automated hybrid pool heating unit configurations. An example method may include determining, by a processor, a first input parameter associated with an operation of a pool heating system comprising a first pool heating unit and a second pool heating unit, wherein the first pool heating unit is a first type of pool heating unit and the second pool heating unit is a second type of pool heating unit. The example method may also include sending, using the processor, based on receiving the first input parameter, a first signal to enable the first pool heating unit to heat a first pool. The example method may also include determining, by the processor, a second input parameter. The example method may also include sending, using the processor, based on receiving the second input parameter, a second signal to enable the second pool heating unit to heat the first pool.
A water heating system is provided. The water heating system includes a tank having a wall, a water inlet defined through the wall and configured to allow ingress of water into the tank, and a water outlet defined through the wall and configured to allow egress of water from the tank. The water heating system also includes a first heating element disposed in a first portion of the tank. The first heating element has a substantially elongate shape and is inclined at a first predefined angle with respect to a base of the tank.
The present disclosure provides a venturi system formed of a plurality of venturi portions, each of the plurality of venturi portions having an exterior surface, an interior surface having a generally convex profile, a first end, and a second end, wherein each of the plurality of venturi portions generally forms an arc of a circle and the first end of each of the plurality of venturi portions is configured to attach to the second end of an adjacent venturi portion to form the venturi system, wherein the venturi system is generally circular.
The present disclosure provides a drain assembly for a heat exchanger system. The drain assembly includes a bracket, a drain pan detachably coupled to the bracket, and a support member detachably coupled to the drain pan. The drain pan defines one or more drain channels extending longitudinally therealong. The support member includes a central portion and two or more arms extending outwardly from the central portion, the two or more arms configured to support a heat exchanger thereon. With such arrangement, at least a portion of the drain pan is disposed between the support member and the bracket, such that load of the heat exchanger is transferred from the support member to the bracket via the drain pan.
The present disclosure provides a drain assembly for an AC furnace coil unit. The drain assembly includes a drain pan defining one or more drain channels extending longitudinally therealong, and an arcuate heat shield detachably coupled to the drain pan. The arcuate heat shield extends along a length of the drain pan. The arcuate heat shield is configured to define a cavity between an inner surface thereof and the drain pan, and distribute airflow, incident on an outer surface thereof, along longitudinal sides of the drain pan.
The present disclosure provides an air handler having a cabinet and a plurality of refrigerant tubes, where each refrigerant tube has a diameter of 7 mm. The air handler includes a V-shaped round tube plate fin heat exchanger disposed within the cabinet and including a plurality of louvered fins. Each louvered fin defines a plurality of holes configured to receive the refrigerant tubes. The plurality of holes defines a linear offset configuration of the louvered fin. The air handler further includes an axial fan housing disposed within the cabinet and located downstream of the V-shaped round tube plate fin heat exchanger, a distributor in fluid communication with the refrigerant tubes, and a plurality of feeder tubes extending between the distributor and the refrigerant tubes. Each feeder tube is configured to allow flow of refrigerant therethrough.
F28D 1/04 - 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
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 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
F28D 1/02 - 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 is a large body of fluid, e.g. domestic or mo with the heat-exchange conduits immersed in the body of fluid
36.
ELECTRIC HEATING ELEMENTS AND WATER HEATERS INCLUDING SAME
A stamped bare wire metal heating element for heating fluid in a tankless electric fluid heating device may include a first electrically conductive portion extending linearly; a second electrically conductive portion extending linearly; and a third electrically conductive portion connecting the first electrically conductive portion to the second electrically conductive portion at a first end of the stamped bare wire metal heating element, wherein the stamped bare wire metal heating element is open between the first electrically conductive portion and the second electrically conductive portion at a second end of the stamped bare wire metal heating element.
F24H 1/10 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
F24H 1/00 - Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
The disclosed technology includes a leak detection system for a fluid heating device, the leak detection system including: a structure configured to at least partially insert into a portion of a fluid heater; a fluid removing portion of or in contact with the structure, the fluid removing portion configured to transport water from the structure to at least one leak sensor; and the at least one leak sensor configured to detect the fluid transported from the structure by the fluid removing portion.
The disclosed technology includes a tankless liquid heater system for detecting buildup on a heating element, including: a chamber; at least one heating element to heat liquid in the chamber; at least one sensor to detect data associated with identifying buildup on the at least one heating element; and at least one device to: receive the data detected by the at least one sensor; determine, based on the data, an amount of the buildup on the at least one heating element; and adjust an operation of the at least one heating element based on the amount of the buildup on the at least one heating element.
F24H 15/288 - Accumulation of deposits, e.g. lime or scale
F24H 1/10 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
The present disclosure provides an air handler including a body and an axial fan housing disposed within the body. The axial fan housing defines an aperture in fluid communication with an axial fan disposed therein and at least one enclosure located at a corner thereof, such that the at least one enclosure is isolated from a continuous airflow passageway through the aperture of the axial fan housing. The enclosure is configured to house electronic controls therein.
The present disclosure provides an air handler including a V-shaped round tube plate fin evaporator coil disposed within a cabinet, a first coil extension coupled to a first tube sheet at a first arm of the evaporator coil, a second coil extension coupled to a second tube sheet at a second arm of the evaporator coil, and a door disposed on a front portion of the cabinet to provide access to the evaporator coil. Each of the first coil extension and the second coil extension extends along a transverse direction of the evaporator coil. The first coil extension, the second coil extension, and the door are together configured to achieve an air-tight seal.
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
42.
INTEGRATED SPACE CONDITIONING AND WATER HEATING/COOLING SYSTEMS AND METHODS THERETO
Embodiments include systems and methods for heating water and cooling air simultaneously, as well as other simultaneous heating and cooling operations. An example variable refrigerant flow conditioning system includes an outdoor unit having a compressor, a condenser coil, and a fan, a water heater coupled to the outdoor unit, a first air conditioning unit coupled to the outdoor unit, and a controller. The controller may be configured to determine that a cooling operation mode is active during a first time interval, cause vapor refrigerant to be directed from the outdoor unit to the water heater and liquid refrigerant to be directed from the outdoor unit to the first air conditioning unit, determine that a heating operation mode is active during a second time interval, and cause the vapor refrigerant to be directed from the outdoor unit to both the water heater and the first air conditioning unit.
F24D 19/10 - Arrangement or mounting of control or safety devices
F24D 19/00 - DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR - Details
F24F 1/00 - Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
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
The disclosure relates to a plug-in connector including a housing having at least two contact terminals received in adjacent terminal receiving cavities. An electric identification device is arranged in the housing and adapted to simultaneously contact the at least two terminals. The electric identification device including a unique identifier, wherein one of the at least two terminals is an output terminal of the identification device, and wherein the unique identifier of the electric identification device is adapted to be read out via the output terminal for authenticating an original equipment manufacturer's parts, such as a plug-in authenticator.
The disclosure relates to a plug-in connector including a housing having at least two contact terminals received in adjacent terminal receiving cavities. An electric identification device is arranged in the housing and adapted to simultaneously contact the at least two terminals. The electric identification device including a unique identifier, wherein one of the at least two terminals is an output terminal of the identification device, and wherein the unique identifier of the electric identification device is adapted to be read out via the output terminal for authenticating an original equipment manufacturer’s parts, such as a plug-in authenticator.
The disclosed technology includes an on-demand water heater which uses an electric heat source to heat the water. The on-demand water heater can have a low fluid capacity heating chamber which has an inlet and an outlet, an electric heat source for heating the water, and a controller to control the electric heat source and maintain the temperature of the water at a predetermined temperature setting. The on-demand water heater can be powered by a direct current power source. The on-demand water heater can also utilize a solar thermal system to provide additional heat to the water.
Embodiments include systems and methods for linearization of airflow through dampers of a heating, ventilation, and air conditioning systems. In one embodiment, a system may include a fan, a first damper for a first zone of the system, the first damper configured to move from a first position to a second position, and from the second position to a third position; and a controller. The controller may be configured to determine a first corrective positional adjustment for the first damper for the second position at a first time interval, and determine, using the first corrective positional adjustment, a fourth position for the first damper, wherein the first damper moves to the fourth position instead of the second position during a second time interval.
F24F 11/74 - 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
F24F 3/052 - Multiple duct systems, e.g. systems in which hot and cold air are supplied by separate circuits from the central station to mixing chambers in the spaces to be conditioned
F24F 11/62 - Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
F24F 3/044 - Systems in which all treatment is given in the central station, i.e. all-air systems
47.
Systems and Methods for Extending the Turndown Ratio of Gas-Fired Burner Systems
The disclosed technology includes a device for extending the turndown ratio of a gas-fired burner system. The device can comprise a variable area device configured reduce the amount of fuel and air passed to the burner during low output conditions by adjusting the cross-sectional area of the passage between the blower and the burner. The variable area device can be controlled by an actuator that adjusts the position of the variable area device. The actuator can be manually controlled, mechanically controlled, or electronically controlled.
F23L 3/00 - Arrangements of valves or dampers before the fire
F23L 13/04 - Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having no other movement with axis perpendicular to face
F23L 1/00 - Passages or apertures for delivering primary air for combustion
48.
INSTALLATION SYSTEMS AND METHODS FOR SELF-CONTAINED HEAT PUMP ROOM CONDITIONING UNITS
A room conditioning unit including a deflatably inflatable cushion located underneath the bridge portion for installing and uninstalling the room conditioning unit. A crane cart can be used to raise and lower the room conditioning unit via a lifting apparatus configured to attach to the anchor points such that a lift attachment point of the lifting apparatus is located above the center of mass of the room conditioning unit. Telescopic closeout panels can seal gaps between the room conditioning unit and the sides of the corresponding window. A mounting pad system having a mounting pad and an actuator can extend and retract to contact a wall and secure the room conditioning unit in place.
A water heater includes a tank assembly that defines an insulation cavity between an inner storage tank and an outer jacket. The water heater includes a bottom pad that supports the tank assembly thereon. The bottom pad is disposed in a bottom pan. Gaskets are disposed between the bottom pad and the bottom pan of the water heater. The bottom pad and at least one of the gaskets include apertures that are configured to internally route a leak sensor assembly of the water heater from the bottom pan to a controller of the water heater through the insulation cavity while preventing a leak of insulation material from the insulation cavity to the bottom pan. The water heater also includes a mounting bracket that is coupled to the inner storage tank to securely hold and route a portion of the leak sensor assembly disposed in the insulation cavity to the controller.
G01M 3/00 - Investigating fluid tightness of structures
F24H 9/17 - Means for retaining water leaked from heaters
G01M 3/18 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for valves
The disclosed technology includes a filter having a body that includes one or more notches. The disclosed technology also includes a room air conditioner including a void for receiving the filter. The void can be accessed by an access panel, and the access panel can be located on an outer-face side of the room air conditioner. The room air conditioner can include one or more filter-interfacing structures that can be configured to interface with and/or secure corresponding notches of the filter. The room air conditioner can also include one or more filter retaining brackets configured to releasably secure the filter to the AC unit.
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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
B01D 46/52 - Particle separators, e.g. dust precipitators, using filters embodying folded material
51.
SYSTEMS AND METHODS FOR REDUCING TEMPERATURE OVERSHOOT OF A HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
The disclosed technology includes systems and methods for reducing temperature overshoot of a heating, ventilation, and air conditioning (HVAC) system. The disclosed technology can include a thermostat having a temperature sensor and a controller. The controller can be configured to receive temperature data from the temperature sensor, determine whether a time since the heating cycle of the HVAC unit began is greater than or equal to a predetermined amount of time, and determine whether a current temperature is less than or equal to a low threshold temperature, the low threshold temperature being less than a target temperature. If the current temperature is less than or equal to the low threshold temperature, the controller can determine whether a capacity of the HVAC unit at the end of the heating cycle is greater than a threshold capacity and adjust a response setting of the thermostat by a predetermined adjustment amount.
A water heater monitoring and notification method includes determining that an intake pressure switch of a combustion system of a water heater or an exhaust pressure switch of the combustion system of the water heater is open and shutting down a blower of the combustion system in response to the intake pressure switch or the exhaust pressure switch being open.
A fastening device for fluid tightly coupling a first duct body and a second duct body of a heat exchanger is provided. The fastening device includes a support member to couple with a connecting edge of the first duct body. The support member includes a pivot pin and a locking device disposed at an offset distance from the pivot pin along a radial axis of the fastening device. The fastening device further includes a pivot arm having a first end to engage with the pivot pin and a second end to engage with a flange of the second duct body. The locking device engages with the pivot arm and move the second end of the pivot arm relative to the pivot pin to fluid tightly engage the flange of the second duct body with the connecting edge of the first duct body.
F24H 3/06 - Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
A freeze protection system is provided that includes a first valve configured to be coupled with an inlet of a water heater, such as a tankless water heater; a second valve configured to be coupled with an outlet of the water heater; and a valve actuator configured to automatically actuate the first valve and the second valve to permit water to drain from the water heater when (1) electric power is lost to the water heater, and (2) a temperature of a fluid in or around the water heater is less than or equal to a predetermined low temperature threshold.
F24D 19/00 - DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR - Details
F24D 19/08 - Arrangements for drainage, venting or aerating
F24H 15/108 - Resuming operation, e.g. after power outages
F24H 15/136 - Defrosting or de-icing; Preventing freezing
An exemplary embodiment of the present disclosure provides a flue gas outlet assembly including a flue gas inlet configured to connect to an exhaust outlet of a fuel burning device, a flue gas outlet, and a flue pipe condensate drain assembly including a condensate inlet, a condensate outlet, and a float valve disposed between the condensate inlet and the condensate outlet, the float valve including a bullet-shaped float, wherein the float valve is biased closed and is configured to open to permit a flow of condensate from the condensate inlet to the condensate outlet upon a sufficient amount of condensate collecting proximate the float valve.
A header tube assembly is disclosed and can include an outer tube, an inner tube, and a flow valve. Each of the outer and inner tubes can include an open end and a closed end, as well as a plurality of apertures extending through a sidewall of the outer tube and inner tube, respectively. The apertures of the inner tube can permit a flow of refrigerant between an internal volume of the inner tube and a gap between the inner and outer tubes, and the apertures of the outer tube can permit a flow of refrigerant between the internal volume of the outer tube and a plurality of refrigerant circuits in a heat exchanger. The flow valve can be configured to selectively prevent refrigerant from flowing between the gap and the open end of the outer tube, depending on a direction of refrigerant flow through the header tube assembly.
Disclosed herein is a flue pipe system comprising a flue pipe, a first electrode, a second electrode, a third electrode, and a voltage supply. The flue pipe can define a fluid flow path through an interior volume of the flue pipe. The voltage supply can be connected to the first electrode, the second electrode, and the third electrode. The voltage supply can form a first electrical circuit comprising the voltage supply, the first electrode, and the third electrode and a second electrical circuit comprising the voltage supply, the second electrode, and the third electrode. The first electrical circuit can form a streamer corona discharge between the first electrode and the third electrode in the interior volume such that the fluid flow path flows therethrough. The second electrical circuit can form a flow of ions between the second electrode and the third electrode along the interior surface of the flue pipe.
The disclosed technology includes systems and methods for reducing temperature overshoot of a heating, ventilation, and air conditioning (HVAC) system. The disclosed technology can include a thermostat having a temperature sensor and a controller. The controller can be configured to receive temperature data from the temperature sensor, determine whether a time since the heating cycle of the HVAC unit began is greater than or equal to a predetermined amount of time, and determine whether a current temperature is less than or equal to a low threshold temperature, the low threshold temperature being less than a target temperature. If the current temperature is less than or equal to the low threshold temperature, the controller can determine whether a capacity of the HVAC unit at the end of the heating cycle is greater than a threshold capacity and adjust a response setting of the thermostat by a predetermined adjustment amount.
Disclosed herein are air conditioning systems including a refrigerant line configured to transport a refrigerant; a compressor in fluid communication with the suction line; and a controller in communication with a sensor configured to measure a characteristic of the refrigerant line. The compressor can be configured to move the refrigerant through the refrigerant line, and the refrigerant can have a first temperature at the outlet of the compressor. The controller can be configured to receive sensor data from the sensor indicating a current value associated with the characteristic of the refrigerant line; determine, based at least partially on the sensor data, that the characteristic of the refrigerant line is above a predetermined threshold; and output instructions for the compressor to perform one or more corrective actions.
The disclosed technology includes devices and systems for air handling units used in heating ventilation and air conditioning (HVAC) systems. The disclosed technology can include a unitary heat exchanger structure configured to be positioned in an airflow path of an HVAC system and comprising a refrigerant heat exchanger coil and a hydronic heat exchanger coil. The refrigerant heat exchanger can include a refrigerant flow path configured to (i) receive a refrigerant circulated through the refrigerant heat exchanger coil and (ii) facilitate heat exchange between the refrigerant and air directed across the refrigerant heat exchanger coil. The hydronic heat exchanger coil can include a water flow path configured to (a) receive water circulated through the hydronic heat exchanger coil and (b) facilitate heat exchange between the water and air directed across the hydronic heat exchanger coil.
F24F 13/30 - Arrangement or mounting of heat-exchangers
F24F 3/153 - 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 with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
F24F 3/044 - Systems in which all treatment is given in the central station, i.e. all-air systems
61.
Systems and methods for preventing excessive cascade boiler system heating overshoot
The disclosed technology includes a controller configured to control an output of one or more boilers to reduce temperature overshoot of the boiler system. The controller can receive temperature data, a threshold temperature value, and a maximum temperature value, and determine whether the temperature of the water in the boiler system is greater than or equal to a threshold temperature. The controller can also determine a number of operating boilers that were operating when the threshold temperature was reached and determine a temperature increment value based on the threshold temperature, the maximum temperature, and the number of operating boilers. The controller can output a control signal to a boiler to reduce an output of the boiler based on the temperature increment value and the temperature data to reduce overshoot of the boiler system.
F22B 35/18 - Applications of computers to steam-boiler control
G05B 19/4155 - Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme
The present disclosure provides a device and a method for detecting leak in a tankless water heater. According to the present disclosure, a leak detection device is disposed on a base of the tankless water heater. The leak detection device includes a leak sensor and at least one absorption arm extending from the leak sensor. The absorption arm wicks water and transports the wicked water towards the leak sensor. The leak sensor generates a signal indicative of leakage in the tankless water heater, in response to sensing wetness.
F24H 9/20 - Arrangement or mounting of control or safety devices
G01M 3/18 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for valves
63.
Heat recovery apparatus and methods of increasing energy efficiency of hybrid heating systems using the apparatus
A hybrid heating system having a heat recovery apparatus in fluid communication with a heat pump and a furnace is provided. The apparatus recovers heat from flue gas discharged from the furnace and transfers the recovered heat to a stream of refrigerant in the heat pump. The apparatus includes a shell disposed in fluid communication with the furnace and tubes disposed in fluid communication with the shell and the heat pump. The system includes valves for regulating access between the apparatus and the stream of the refrigerant in the heat pump, and a control unit in communication with the valves to regulate access between the apparatus and the heat pump during a heating mode based on operating parameters of the system.
The present disclosure provides a louvered fin including a leading edge, a trailing edge, and a surface extending between the leading edge and the trailing edge. The surface defines a first set of holes along a first axis, a second set of holes along a second axis and offset from the first set of holes, and a third set of holes along a third axis and offset from the second set of holes. Each of the first axis, the second axis, and the third axis extends substantially parallel to a longitudinal axis of the fin. A first offset distance between the second and first set of holes is greater than a second offset distance between the third and second set of holes. The second and the third set of holes define a substantially obtuse trapezoidal matrix.
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
65.
LOW AMBIENT TEMPERATURE HEAT PUMP WATER HEATER SYSTEMS, HEAT EXCHANGERS, AND METHODS THERETO
The disclosed technology includes systems and methods for a heat pump water heater. The disclosed technology can include a heat pump water heater system having an evaporator, a condenser, a vapor injection line, a compressor, and a multi-fluid heat exchanger. The vapor injection line can include an expansion valve to transition refrigerant received from the condenser at a first pressure to a second pressure. The compressor can be configured to circulate refrigerant through the condenser, the multi-fluid heat exchanger, the vapor injection line, and the evaporator. The multi-fluid heat exchanger can be configured to receive refrigerant at a first pressure from the condenser, refrigerant at a second pressure from the vapor injection line, and water. The multi-fluid heat exchanger can further facilitate heat transfer between the refrigerants at the first and second pressures and the water to preheat the water before the water is passed through the condenser.
F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems
F28F 3/04 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
F25B 7/00 - Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
66.
MIXING VALVE SUBASSEMBLY AND WATER HEATER INCLUDING SAME
A mixing valve assembly is disclosed. The mixing valve assembly can include a cold water connector, a hot water connector, an electronic valve system, and a tube. The cold water connector can have a through-hole configured to slideably receive at least a portion of a first tubular portion of a cold water inlet, and the hot water connector can have a through-hole configured to slideably receive at least a portion of a second tubular portion of a hot water outlet. The electronic valve system can be configured to transition a valve between an open configuration and a closed configuration such that cold water can be selectively permitted to flow from the cold water connector to the hot water connector. The mixing valve assembly can be configured to selectively permit cold water to bypass the tank of water heater.
G05D 23/13 - Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
F16K 11/24 - Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves; Arrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit operated by separate actuating members with an electromagnetically-operated valve, e.g. for washing machines
F16K 11/00 - Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves; Arrangement of valves and flow lines specially adapted for mixing fluid
F16K 31/04 - Operating means; Releasing devices magnetic using a motor
67.
HEAT PUMP POOL WATER HEATER SYSTEMS AND METHODS THERETO
The disclosed technology includes systems and methods for operating a pool water heating system. The pool water heating system can include a heat pump, a supplemental heat source, a water temperature sensor, and a controller. The controller can be configured to receive water temperature data and, in response to determining that the temperature of the water is less than a threshold temperature, output a control signal to activate the heat pump. The controller can further determine an expected heating time that can be indicative of an amount of time required for the temperature of the water to be greater than or equal to the threshold temperature. The controller can also generate a heating schedule based at least in part on the expected heat time and a predetermined time of use. The heating schedule can be indicative of a heat pump operation time and a supplemental heat source operation time.
The disclosed technology includes a heat pump having a thermal energy storage (TES) material. The heat pump can include a first heat exchanger to exchange heat between ambient air and refrigerant, a second heat exchanger to exchange heat between the refrigerant and air supplied to a climate-controlled space, and a third heat exchanger to exchange heat between the TES material and the refrigerant in a first fluid path and the refrigerant in a second fluid path. The heat pump can include a first compressor to circulate refrigerant to the first, second, and third heat exchangers and a second compressor to circulate refrigerant to the second and third heat exchangers. The first compressor can facilitate heat exchange between the ambient air and the TES material and the second compressor can facilitate heat exchange between the TES material and the air supplied to the climate-controlled space.
F24D 5/12 - Hot-air central heating systems; Exhaust-gas central heating systems using heat pumps
F24D 17/02 - Domestic hot-water supply systems using heat pumps
F25B 7/00 - Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
69.
Heat pump water heater systems and methods for low ambient temperature conditions
The disclosed technology includes devices, systems, and methods for heat pump systems configured to operate in low ambient temperatures. The disclosed technology can include a heat pump water heater system having an evaporator, a first compressor configured to compress refrigerant to a first pressure, and a second compressor configured to compress the refrigerant to a second pressure. The second pressure can be greater than the first pressure. The heat pump water heater system can include a preheater configured to receive the refrigerant at the first pressure and heat water and a condenser configured to receive the refrigerant at the second pressure and heat water. The water can be passed through the preheater before being passed through the condenser.
The present disclosure provides a louvered fin including a leading edge, a trailing edge, and a surface extending between the leading edge and the trailing edge. The surface defines a first set of holes along a first axis, a second set of holes along a second axis and offset from the first set of holes, and a third set of holes along a third axis and offset from the second set of holes. Each of the first axis, the second axis, and the third axis extends substantially parallel to a longitudinal axis of the fin. A first offset distance between the second and first set of holes is greater than a second offset distance between the third and second set of holes. The second and the third set of holes define a substantially obtuse trapezoidal matrix.
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
A heat trap apparatus for a water heater is provided. The heat trap apparatus includes a tubular body, a liner disposed within the tubular body, and a heat trap baffle assembly having a tubular housing coaxially disposed within the liner. The liner includes a projection to engage with an inner surface of the tubular body at a first end using an interference fit. The tubular housing includes a first diametric portion to engage with the inner surface of the tubular body at a second end using an interference fit, a second diametric portion extending from the first diametric portion and to engage with an inner surface of the liner using an interference fit, and a third diametric portion extending from the second diametric portion and to movably support one or more heat trap inserts to inhibit convective fluid flow therethrough.
F24H 9/12 - Arrangements for connecting heaters to circulation pipes
F24D 19/00 - DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR - Details
F16K 15/14 - Check valves with flexible valve members
A water heater can include a heat source and a heat exchanger that transfers heat to the water. A header attached to the heat exchanger provides an inlet and an outlet for water to flow into and out of the heat exchanger. The header can also include an anode assembly that releasably attaches to the header. The anode assembly can be located at a bottom of the header so that an anode in the anode assembly remains in contact with the water when water is flowing through the heat exchanger.
The disclosed technology includes systems and methods for controlling an air conditioning system. The method of controlling the air conditioning system can include receiving air temperature data from an air temperature sensor and determining that the air conditioning system should operate in a reheat mode based on the air temperature being less than a threshold air temperature. The method can include outputting a control signal to a first electronic expansion valve to close and thereby prevent refrigerant to flow through an outdoor condenser coil. The method can also include outputting a control signal to a second electronic expansion valve to open and thereby permit refrigerant to flow through a reheat coil.
Embodiments include overflow sensor assemblies for water heaters, HVAC systems, and other devices for which temperature control systems may be used. An example overflow sensor assembly for detecting fluid leaks at a device may include a sensor probe configured to be in electrical communication with a power supply, and a sensor mounting bracket that forms a ground, the sensor mounting bracket configured to attach to a mounting surface on the device and suspend the sensor probe in a condensate drain pan of the device. An overflow detection circuit can be activated when the sensor probe and the sensor mounting bracket come in contact with a condensate fluid.
The present disclosure provides a climate control system including a first heat exchanger having a plurality of first channels to allow flow of water therethrough, a burner to heat the water in the first channels of the first heat exchanger, and an inducer disposed proximal to the burner to direct combustion air towards the burner for combustion, and vent products of combustion. The system further includes a hydronic coil-to-air heat exchanger in fluid communication with the first heat exchanger, to receive the heated water from the first heat exchanger. The hydronic coil-to-air heat exchanger includes a plurality of second channels to allow flow of heated water therethrough. The system also includes a blower to blow air across the plurality of second channels of the hydronic coil-to-air heat exchanger, whereby the air is heated by the heated water.
F24F 12/00 - Use of energy recovery systems in air conditioning, ventilation or screening
F24F 13/30 - Arrangement or mounting of heat-exchangers
F24F 11/81 - Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
F24F 11/83 - Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
Embodiments include heat pump systems with gas bypasses and related methods. In one embodiment, a system may include a gas bypass tank having a bypass inlet, a liquid outlet, and a vapor outlet, and a first splitting valve having a first splitter outlet in fluid communication with the bypass inlet, a first splitter inlet in fluid communication with the liquid outlet, and a first switching path configured to switch between a first conduit path in fluid communication with a first coil system and a second conduit path in fluid communication with a second coil system.
Disclosed herein are connectors for a tankless water heater. The connectors can comprise a flange, an aperture extending through the flange having a first diameter, one or more slots extending through the flange, a connector portion substantially surrounding the aperture and extending outward from the flange away from the tankless water heater. The aperture can correspond to an air inlet extending into the tankless water heater, and the air inlet can have a second diameter that is larger than the aperture. To keep the flange in place, the one or more slots can correspond to one or more fastening holes in the tankless water heater. The one or more slots can be substantially parallel and on opposite sides of the aperture. The connector can be in a secured state when the one or more slots are fastened to the one or more fastening holes.
A noise muffler for an air moving device can include a housing with a housing inlet, a housing outlet, and at least a first foam component and a second foam component. The first foam component and the second foam component are placed within a cavity of the housing and define an air passageway. The first foam component and the second foam component redirect air flow through the cavity in three dimensions in order to muffle noise generated by the air moving device.
A transfer tube for a thermal transfer device can include at least one wall having an inner surface and an outer surface, where the inner surface forms a cavity, where the at least one wall further has a first end and a second end. The first end can be configured to couple to a terminus of a heat exchanger of the thermal transfer device. The second end can be configured to couple to a collector box of the thermal transfer device. At least a portion of the at least one wall can be disposed in a vestibule of the thermal transfer device. The cavity can be configured to simultaneously receive a first fluid that flows from the first end to the second end and a second fluid that flows from the second end to the first end.
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
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
Embodiments include various water heaters. In one example, a water heater includes a burner, an exhaust vent, a corrugated baffle having a first slit having a first length and a second slit having a second length that is less than the first length, and a heat exchanger. The heat exchanger includes a first set of heat exchanger tubes arranged in a first row, and a second set of heat exchanger tubes arranged in a second row, the second set of heat exchanger tubes having a third tube having a first angled surface and a second angled surface, where the first angled surface and the second angled surface together form a fin. The third tube can be arranged such that the fin is disposed at least partially between the first curved outer surface and the second curved outer surface.
F24H 1/14 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
F28F 1/20 - 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 longitudinally the means being attachable to the element
F28F 1/30 - 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 being attachable to the element
A water heater has one or more heating elements and an internal wall that causes an increased rate of heating within a sub-volume within the water heater tank. Water from the sub-volume is directed to the tank outlet.
An air mover system for use in an indoor unit of a heating, ventilation, and air conditioning (HVAC) system includes a blower comprising a motor and a blower control unit configured to control operations of the motor. The blower control unit includes a controller and a sensor communicably coupled to the controller. The sensor is configured to sense air inside the indoor unit and to provide sensor information to the controller. The controller is configured to determine whether a refrigerant is present in the air based on the sensor information and to control the blower to move the air out of the indoor unit in response to determining that the refrigerant is present in the air.
A combination water heating, air conditioning refrigerant system is described. The combined system includes a plurality of independently adjustable electronic expansion valves. The expansion valves can independently modulate the delivery of high-temperature, high-pressure refrigerant to either a water heat exchanger or an outside condenser. A controller can receive input signals, including temperature signals from one or more temperature sensors that indicate the temperature at various locations of the system. The temperature signals include one or more of water temperature signals, ambient air temperature signals, or refrigerant super heat temperatures signals. In response to the input signals, the controller can output control signals to one or more of the plurality of electronic expansion valves.
F25B 41/34 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
F25B 41/385 - Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator
F24F 1/022 - Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
F24H 1/52 - Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
F24H 9/14 - Arrangements for connecting different sections, e.g. in water heaters
F24F 11/65 - Electronic processing for selecting an operating mode
F24F 1/0326 - Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by the arrangement of refrigerant piping outside the heat exchanger within the unit casing
F24F 1/0323 - Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers by the mounting or arrangement of the heat exchangers
84.
Systems and methods for localized heating, ventilation, and air conditioning
An exemplary embodiment of the present disclosure provides a localized heating, ventilation, or air conditioning (HVAC) system comprising a moveable air delivery system comprising. The moveable air delivery system further comprising an air inlet configured to receive air and an air outlet configured to output the air into a space. The localized HVAC further comprising a movement system configured to move the air outlet in a generally planar manner. The movement system further comprising an air delivery support system configured to support the air outlet, the air delivery support system configured to move the air outlet in an air delivery plane.
The disclosed technology includes devices and systems for an economizer of a heating ventilation and air conditioning (HVAC) system. The disclosed technology can include an economizer for an HVAC system comprising a housing, an air inlet extending through a wall of the housing, a sliding door configured to transition between a closed position and an open position, and a controller configured to cause the sliding door to transition between the closed position and the open position based on temperature data. The sliding door can comprise a first portion forming a barrier and a second portion comprising at least one aperture. In the closed position, the first portion can align with the air inlet and substantially prevent ambient air from moving through the air inlet. In the open position, the second portion can align with the air inlet and permit the ambient air to move through the air inlet.
The present disclosure provides a water heater including a bypass conduit to allow flow of cold water from an inlet pipe to an outlet pipe, and an outlet temperature sensor coupled to the outlet pipe downstream of an outlet of the bypass conduit, to sense temperature of mixture of hot water and cold water in the outlet pipe. An electronic mixing valve is disposed along the inlet pipe to receive temperature data of water mixture from the outlet temperature sensor and compare temperature of the water mixture with a predefined temperature value. In response to determining that the water mixture is flowing through the outlet pipe, the electronic mixing valve regulates the flow of cold water through at least one of the bypass conduit and the inlet pipe until the temperature of the water mixture is within a predetermined range of the predefined temperature value.
A fuel-fired furnace incorporates specially designed fuel/air mixing and combustion structures. The fuel/air mixing structure is of a mixing sound-attenuating design and includes a venturi having a perforated sidewall portion and being surrounded by a noise-damping housing chamber communicating with the interior of the venturi via its sidewall perforations. During use of the mixing structure, air is flowed through the venturi in a swirling pattern while fuel is transversely injected internally against the swirling air. The combustion structure includes a burner box housing into which the fuel/air mixture is flowed, combusted, and then discharged as hot combustion gas into and through the heat exchanger tubes. The fuel/air mixture entering the burner box housing initially passes through a non-uniformly perforated diffuser plate functioning to substantially alter in a predetermined manner the relative combustion gas flow rates through the heat exchanger tubes.
F23D 14/70 - Baffles or like flow-disturbing devices
F23D 14/08 - Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with axial outlets at the burner head
F24H 9/00 - FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL - Details
88.
Water Heaters with Real-Time Hot Water Supply Determination
A water heating system can include a water heater having a tank, an inlet line, and an outlet line, where the inlet line provides unheated water to the tank, and where the outlet line draws heated water from the tank. The water heating system can also include multiple sensing devices, where each sensing device of the plurality of sensing devices measures a parameter associated with the tank. The water heating system can further include a controller communicably coupled to the plurality of sensing devices, where the controller determines an amount of heated water in the tank based on measurements made by the plurality of sensing devices.
The disclosed technology can include a bypass valve assembly having a partition that can fluidly separate an inlet and an outlet of a fluid heating system. A first bypass valve and a second bypass valve can be mounted to the partition and configured to permit a fluid to flow between the inlet and the outlet. The first bypass valve and the second bypass valve can be configured to transition between a closed state and an open state. The first bypass valve and the second bypass valves can each have a spring configured to transition the respective first and second bypass valve from the closed state in response to experiencing a pressure that is greater than or equal to a respective first or second predetermined pressure. The second predetermined pressure can be greater than the first predetermined pressure.
F28F 27/02 - Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
F16K 17/04 - Safety valves; Equalising valves closing on insufficient pressure on one side spring-loaded
90.
Leak Detection Sensor Assemblies For Water Heaters
A water heater includes a leak detection system. The leak detection system includes a leak sensor assembly that is disposed in a bottom pan of the water heater. The leak sensor assembly includes a sensor housing that has a sensor channel that is formed therein such that the sensor channel is disposed at an elevation from a base of the bottom pan when the sensor housing is disposed on the base of the bottom pan. Further, the leak sensor assembly includes a leak sensor that is disposed in the sensor channel of the sensor housing. The leak sensor detects water that leaks from the water heater and accumulates in the bottom pan when a level of the water in the bottom pan rises to the elevation of the sensor channel and the leak sensor that is disposed therein.
F24H 9/20 - Arrangement or mounting of control or safety devices
G01F 23/00 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
F24H 9/17 - Means for retaining water leaked from heaters
A tube sheet for a thermal transfer device can include a body having a plurality of apertures that traverse therethrough, where the plurality of apertures are configured to receive a plurality of tubes of the thermal transfer device. The tube sheet can also include an outer perimeter defining the body, where the outer perimeter has at least one first recess feature disposed therein. The at least one first recess feature can have a first shape and a first size, where the first shape is any shape aside from a semi-circle.
F24H 1/28 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
92.
Heat pump water heater systems and methods thereto
A fluid heating device comprising a heat pump and an electric heating element can include a system and method that can receive current data from a current sensor and temperature data from a temperature sensor, determine whether the current is greater than or equal to a threshold current and whether the temperature is greater than or equal to a threshold temperature, and output a control signal to heat the fluid using the heat pump only or the electric heating element only based on the current data and the temperature data.
The present disclosure addresses systems, media, and methods of configuring a heating system comprising a plurality of combustion-type heating devices fluidly coupled to a vent system. Configuring the heating system includes receiving operating pressure data from one or more pressure sensors in a flue of one of combustion-type heating devices and the vent system. The operating pressure data from the one or more pressure sensors is indicative of a pressure at a corresponding location in the vent system. Configuring the heating system further includes comparing the operating pressure data to stored operational pressure data indicative of operational pressure ranges indicative of permissible operating parameters associated with preventing backflow of flue gases into the one of combustion-type heating devices and outputting instructions for a damper to at least partially open or at least partially close based at least in part on the operating pressure data and the stored operational pressure data.
Disclosed herein are heat exchanger devices comprising an outer shell defining an interior chamber that is configured to pass a heat transfer fluid therethrough, a tube at least partially disposed within the interior chamber and in thermal communication with the heat transfer fluid, the tube being connected to a pool and configured to flow water from the pool therethrough such that the water flowing through the tube exchanges heat with the heat transfer fluid, and a coating disposed on an interior surface of the tube contacting the water from the pool, the coating comprising Nickel. The coating can comprise an additive, such as an electroless Nickel coating. The coating can also be selected from the group consisting of polytetrafluoroethylene (PTFE), Boron Nitride (BN), Silicon Carbide (SiC), aluminum oxide (Al2O3), carbon (C), and carbon allotropes.
A heat pump water heater can include a water tank and a refrigerant circuit that can be in fluid communication with an evaporator coil, a condenser coil, and a compressor. The heat pump water heater can include a fan configured to move air across the evaporator coil, a temperature sensor, and a controller. The controller can be configured to receive temperature data from the temperature sensor and, in response to the temperature data indicating a temperature less than a predetermined temperature threshold, output instructions for the compressor to deactivate and the fan to move air across the evaporator coil.
The disclosed technology includes devices and methods for optimizing refrigerant flow in a heat exchanger. The disclosed technology can include a heat exchanger unit that has a first heat exchanger coil that experiences a first airflow of air passing over the first heat exchanger coil and a second heat exchanger coil that experiences a second airflow of air passing over the second heat exchanger coil. The first airflow can be less than the second air flow. The disclosed technology can include distributor tubes in fluid communication with the heat exchanger coils to direct a flow of refrigerant from an expansion valve to the heat exchanger coils. The first distributor tube can reduce a flow rate of refrigerant to the first heat exchanger coil such that a greater amount of refrigerant is directed to the second heat exchanger coil and refrigerant exits each heat exchanger coil as a superheated vapor.
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 5/00 - Air-conditioning systems or apparatus not covered by group or
97.
BATTERY-INTEGRATED HEAT PUMP SYSTEMS AND METHODS THERETO
The disclosed technology includes devices, systems, and methods for a battery-integrated heat pump system. The disclosed technology can include a heat pump system having a battery, a compressor, and a variable speed drive in electrical communication with the battery and the compressor. The variable speed drive can be configured to control a speed of the compressor. The heat pump system can include a fan that can be configured to move air across a heat exchanger coil of the heat pump system and the battery can be located in an airflow path of the fan such that the fan can also move air across the battery to regulate a temperature of the battery.
H01M 10/6564 - Gases with forced flow, e.g. by blowers using compressed gas
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 10/62 - Heating or cooling; Temperature control specially adapted for specific applications
H01M 10/635 - Control systems based on ambient temperature
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
98.
SYSTEMS AND METHODS FOR CONTROLLING TWINNED HEATING APPLIANCES
A system and a method for controlling twinned heating appliances are described. The system includes a first heating appliance and a second heating appliance. The first heating appliance includes a first blower and a first wireless communication unit. Further, the second heating appliance is operatively coupled with the first heating appliance as a twinned unit. The second heating appliance includes a second blower and a second wireless communication unit. The system also includes a primary control unit configured to receive speed data indicative of a speed of the first blower and speed data indicative of a speed of the second blower. The primary control unit is further configured to output a blower speed control signal to at least one of the first blower and the second blower to synchronize the first blower and the second blower.
F24D 19/10 - Arrangement or mounting of control or safety devices
F24D 5/04 - Hot-air central heating systems; Exhaust-gas central heating systems operating with discharge of hot air into the space or area to be heated with return of the air to the air heater
F24D 19/00 - DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR - Details
F24H 9/00 - FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL - Details
The disclosed technology includes a gas delivery system for controlling a target gas input rate of a fluid heating device. The system can include a sensor configured to measure a temperature of a gas flowing in a gas flow path, a modulating orifice in fluid communication with the gas flow path, and a motor in mechanical communication with the modulating orifice. The system can further include a controller configured to receive temperature data indicative of the temperature of the gas. The controller can determine a target cross-sectional area of the modulating orifice based at least in part on the target gas input rate and the temperature of the gas and, in response, output a signal to the motor to transition the modulating orifice from a first position to a second position having the target cross-sectional area.
F24H 9/20 - Arrangement or mounting of control or safety devices
F24H 9/13 - Arrangements for connecting heaters to circulation pipes for water heaters
F16K 3/03 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with a closure member in the form of an iris-diaphragm
G05D 7/06 - Control of flow characterised by the use of electric means
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