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公开(公告)号：US20240200839A1
公开(公告)日：2024-06-20
申请号：US18539082
申请日：2023-12-13
CPC分类号： F25B41/31 , F25B13/00 , F25B2400/13 , F25B2600/2513
摘要： An energy efficient heat pump includes a working fluid circuit configured to circulate a working fluid, where the working fluid circuit includes a compressor, a first heat exchanger, a second heat exchanger, a first expansion device, an economizer, and a reversing valve, where the reversing valve is configured to adjust a flow direction of the working fluid through the working fluid circuit. The energy efficient heat pump also includes a first conduit of the working fluid circuit, where the first conduit extends between the first heat exchanger and the second heat exchanger, the economizer is disposed along the first conduit, and the first conduit is configured to direct the working fluid between the first heat exchanger and the second heat exchanger and through the economizer. The energy efficient heat pump further includes an injection conduit extending from the first conduit to an injection port of the compressor, where the injection conduit includes a second expansion device, and the injection conduit is configured to direct a portion of the working fluid from the working fluid circuit, through the second expansion device, through the economizer, and to the injection port of the compressor to inject of the portion of the working fluid into the compressor.
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公开(公告)号：US20230375212A1
公开(公告)日：2023-11-23
申请号：US18199139
申请日：2023-05-18
CPC分类号： F24F11/84 , F24F11/41 , F24F11/65 , F24F11/86 , F24F2140/30
摘要： A heat pump includes a working fluid circuit configured to circulate a working fluid therethrough. The working fluid circuit includes a first heat exchanger, a second heat exchanger, a compressor, and an expansion valve. The first heat exchanger is configured to exchange heat between the working fluid and a supply air flow, and the second heat exchanger is configured to exchange heat between the working fluid and an ambient air flow. The heat pump also includes a bypass circuit configured to direct a portion of the working fluid from the compressor to the second heat exchanger, a bypass valve configured to control a flow of the portion of the working fluid along the bypass circuit, and a controller configured to receive data indicative of a measured value of an operating parameter associated with formation of frost on the second heat exchanger and to control a position of the bypass valve based on a comparison of the measured value with a baseline value of the operating parameter.
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公开(公告)号：US12050034B2
公开(公告)日：2024-07-30
申请号：US18457026
申请日：2023-08-28
发明人： Ewin Ramster Melwin , Pushpak Doiphode , Narendra Madhukar Jagtap , Tejas Mahendra , Rahul Salunke , Naveen Ramanagouda Patil , Jeremy Ryan Smith
CPC分类号： F25B30/02 , F25B49/022 , F25B2600/0271 , F25B2700/1931
摘要： An energy efficient heat pump includes a variable capacity compressor and a controller communicatively coupled to the variable capacity compressor. The controller is configured to receive a call for heating, determine an upper discharge pressure limit of the energy efficient heat pump, determine a lower discharge pressure limit of the energy efficient heat pump, determine a target discharge pressure value, where the target discharge pressure value is less than or equal to the upper discharge pressure limit and is greater than or equal to the lower discharge pressure limit, and modulate operation of the variable capacity compressor such that a detected discharge pressure of the heat pump approaches the target discharge pressure value.
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公开(公告)号：US20240068716A1
公开(公告)日：2024-02-29
申请号：US18457026
申请日：2023-08-28
发明人： Ewin Ramster Melwin , Pushpak Doiphode , Narendra Madhukar Jagtap , Tejas Mahendra , Rahul Salunke , Naveen Ramanagouda Patil , Jeremy Ryan Smith
CPC分类号： F25B30/02 , F25B49/022 , F25B2600/0271 , F25B2700/1931
摘要： An energy efficient heat pump includes a variable capacity compressor and a controller communicatively coupled to the variable capacity compressor. The controller is configured to receive a call for heating, determine an upper discharge pressure limit of the energy efficient heat pump, determine a lower discharge pressure limit of the energy efficient heat pump, determine a target discharge pressure value, where the target discharge pressure value is less than or equal to the upper discharge pressure limit and is greater than or equal to the lower discharge pressure limit, and modulate operation of the variable capacity compressor such that a detected discharge pressure of the heat pump approaches the target discharge pressure value.
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公开(公告)号：US20230349583A1
公开(公告)日：2023-11-02
申请号：US18128803
申请日：2023-03-30
发明人： Ewin Ramster Melwin , Jeremy Ryan Smith , Tejas Mahendra , Pushpak Macchindra Doiphode , Narendra Madhukar Jagtap , Rahul Krushna Salunke , Naveen Ramanagouda Patil
IPC分类号： F24F11/86
CPC分类号： F24F11/86
摘要： A heating, ventilation, and/or air conditioning (HVAC) system includes a variable capacity compressor and a controller communicatively coupled to the variable capacity compressor. The controller is configured to receive data indicative of an operating parameter of the HVAC system, determine an upper suction pressure limit of the HVAC system based on the data, determine a lower suction pressure limit of the HVAC system based on the data, determine a target suction pressure value, wherein the target suction pressure value is less than or equal to the upper suction pressure limit and is greater than or equal to the lower suction pressure limit, and modulate operation of the variable capacity compressor such that a detected suction pressure of the HVAC system approaches the target suction pressure value.
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公开(公告)号：US20240353142A1
公开(公告)日：2024-10-24
申请号：US18136778
申请日：2023-04-19
IPC分类号： F24F11/83 , F24F1/0068
CPC分类号： F24F11/83 , F24F1/0068
摘要： A heating, ventilation, and air conditioning (HVAC) system includes a working fluid reservoir having an enclosure defining a chamber configured to fluidly couple to a working fluid circuit, where the chamber is configured to receive and store working fluid from the working fluid circuit. The HVAC system also includes an actuator configured to adjust a component disposed within the enclosure to adjust a volume of the chamber and a control system configured to instruct the actuator to adjust a position of the component disposed within the enclosure to increase the volume of the chamber, to reduce the volume of the chamber, or both based on an operating mode of the HVAC system.
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公开(公告)号：US20240200815A1
公开(公告)日：2024-06-20
申请号：US18539766
申请日：2023-12-14
CPC分类号： F24F11/46 , F24F11/86 , F24F2110/10
摘要： An energy efficient heating, ventilation, and air conditioning (HVAC) system includes a variable capacity compressor configured to operate at a plurality to operating capacities and a control system communicatively coupled to the variable capacity compressor. The control system is configured to receive data indicative of a temperature within a conditioned space, receive data indicative of a set point temperature of the conditioned space, initialize operation of the variable capacity compressor, and ramp up operation of the variable capacity compressor to an intermediate operating capacity of the plurality of operating capacities during initial operation of the variable capacity compressor, where the intermediate operating capacity is less than a full operating capacity of the plurality of operating capacities.
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公开(公告)号：US20240151424A1
公开(公告)日：2024-05-09
申请号：US18503980
申请日：2023-11-07
IPC分类号： F24F11/84
CPC分类号： F24F11/84
摘要： An energy efficient heat pump for a heating, ventilation, and air conditioning (HVAC) system includes a working fluid circuit and a first conduit of the working fluid circuit, where the first conduit extends between a first heat exchanger and a second heat exchanger of the working fluid circuit. The energy efficient heat pump also includes a compressor disposed along the working fluid circuit, where the compressor is configured to direct a working fluid along the working fluid circuit, and the compressor includes a suction port and an injection port. The energy efficient heat pump further includes an injection conduit extending from the first conduit to the injection port of the compressor, where the injection conduit includes an expansion device, and the injection conduit is configured to direct a portion of the working fluid from the working fluid circuit, through the expansion device, and to the injection port.
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公开(公告)号：US20230408130A1
公开(公告)日：2023-12-21
申请号：US18210735
申请日：2023-06-16
CPC分类号： F24F11/65 , F24F11/74 , F24F2110/10
摘要： A heating, ventilation, and air conditioning (HVAC) system includes a heat exchanger configured to receive a working fluid and place the working fluid in a heat exchange relationship with an air flow directed across the heat exchanger, a switch configured to detect an operating parameter of the HVAC system, where the switch is configured to interrupt operation of the HVAC system in response to detection of a first value of the operating parameter greater than an operating parameter limit value, and a sensor configured to detect the operating parameter of the HVAC system. The HVAC system also includes a controller communicatively coupled to the sensor, where the controller is configured to receive data indicative of a second value of the operating parameter, compare the second value of the operating parameter to a threshold value of the operating parameter, wherein the threshold value is less than the operating parameter limit value, and adjust operation of the HVAC system in response to a determination that the second value of the operating parameter is greater than the threshold value.
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