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公开(公告)号：US20250035354A1
公开(公告)日：2025-01-30
申请号：US18713071
申请日：2022-11-22
Applicant: Rheem Manufacturing Company
Inventor： Parimal Nilangekar , Thomas H. Mcguire
Abstract: A heat pump pool heater (HPPH) system is disclosed which may include a heat pump, a water temperature sensor, one or more evaporator sensors, and one or more supplemental heat sources. The HPPH system can determine that frost is forming on an evaporator coil and can transition from a normal pool water heating mode to a defrost mode to remove frost from the evaporator coil. During the defrost mode, the HPPH system can operate the one or more supplemental heat sources to provide heat to the pool water.
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公开(公告)号：US12209761B2
公开(公告)日：2025-01-28
申请号：US18517574
申请日：2023-11-22
Applicant: Mitsubishi Electric Corporation
Inventor： Koji Fukui , Kosuke Tanaka , Kazuya Watanabe
Abstract: An air-conditioning apparatus includes a refrigerant circuit and a controller. The refrigerant circuit includes a main circuit and a bypass circuit. The bypass circuit is connected, by a pipe, to each of a plurality of parallel outdoor heat exchangers via a defrosting refrigerant pressure-reducing device, a defrosting flow passage switching device, and a backflow prevention device. The controller switches a flow passage for use in introduction of refrigerant using the defrosting flow passage switching device, to select one of the plurality of parallel outdoor heat exchangers as a defrosting target to be defrosted; and supplies defrosting refrigerant whose pressure is reduced by the defrosting refrigerant pressure-reducing device to the selected one of the plurality of parallel outdoor heat exchangers.
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公开(公告)号：US12181203B1
公开(公告)日：2024-12-31
申请号：US18206843
申请日：2023-06-07
Applicant: Lennox Industries Inc.
Inventor： Rakesh Goel , Siddarth Rajan
Abstract: A method includes measuring a saturated suction temperature, receiving actual temperature value reflective of the measured saturated suction temperature, and determining whether the actual temperature value is less than a first pre-determined minimum threshold temperature value. If the actual temperature value is less than the first pre-determined minimum threshold temperature value, initiating a timer to operate for a pre-determined time interval. Determining whether the actual temperature value is less than a second pre-determined minimum threshold temperature value and if the actual temperature value is less the second pre-determined minimum threshold temperature value, initiating the timer to operate for a modified time interval. If the timer has expired, the operation of the compressor is modified.
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公开(公告)号：US12140322B2
公开(公告)日：2024-11-12
申请号：US18264417
申请日：2022-02-07
Applicant: OCTOPUS ENERGY HEATING LIMITED
Inventor： Peter Konowalczyk
IPC: F24D19/10 , F24D17/02 , F24H15/136 , F24H15/152 , F24H15/172 , F25B47/02
Abstract: The present disclosure provides a computer-implemented method of defrosting a heat pump of a water provision system installed in a building, the water provision system comprising the heat pump configured to transfer thermal energy from outside the building to a thermal energy storage medium inside the building and a control module configured to control operation of the heat pump, the water provision system being configured to provide water heated by the thermal energy storage medium to an occupant of the building at one or more water outlets, the method being performed by the control module and comprising: determining, based on performance of the heat pump, an expected start time of a next defrost cycle; and preparing the water provision system before the expected start time of the next defrost cycle.
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公开(公告)号：US20240302086A1
公开(公告)日：2024-09-12
申请号：US18575105
申请日：2022-05-25
Inventor： Jian MA , Lisheng JI , Jianquan CHEN , Zhanpeng CUI , Xianghui ZHAO , Fei XING
CPC classification number: F25B47/02 , F25B41/20 , F25B49/02 , F25B2400/0409
Abstract: A refrigeration system and a refrigerating appliance. The refrigeration system includes: a refrigeration assembly comprising a compressor, a first evaporator, and a second evaporator; and a first defrost bypass pipeline and a second defrost bypass pipeline for circulating refrigerant from the compressor to generate heat; the first defrost bypass pipeline is thermally connected to the first evaporator, the second defrost bypass pipeline is thermally connected to the second evaporator; one evaporator provides cooling when the defrost bypass pipelines heat another evaporator, so as to prevent temperature fluctuations in a storage compartment of the refrigerating appliance. When the first and second evaporator are defrosted independently, the evaporator not undergoing defrosting provide cooling, which enables the refrigeration system to effectively prevent significant temperature fluctuations in the storage compartment while improving the defrosting rate of the evaporators.
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Patent Agency Ranking
公开(公告)号：US20240288210A1
公开(公告)日：2024-08-29
申请号：US18575236
申请日：2022-05-25
Inventor： Yanfeng ZHAO , Lisheng JI , Xiaobing ZHU , Jianquan CHEN , Yongsheng SUN , Xianghui ZHAO
IPC: F25B47/02
CPC classification number: F25B47/022 , F25B2400/0403
Abstract: A refrigeration system and a refrigerating appliance. The refrigeration system includes: a refrigeration assembly including a compressor, and an evaporator, forming a refrigeration circuit; and a defrost bypass pipeline connected to the refrigeration circuit for circulating refrigerant from the compressor to generate heat; the defrost bypass pipeline is thermally connected with the evaporator to heat the evaporator. By adding a defrost bypass pipeline connected to the refrigeration circuit and thermally connecting it with the evaporator, the evaporator can be heated for defrosting when the refrigerant from the compressor flows through the defrost bypass pipeline. Since the refrigerant from the compressor can produce a significant amount of heat when passing through the defrost bypass pipeline, this manner of defrosting can enhance the defrosting rate of the evaporator and enable quick, efficient, and thorough defrosting.
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公开(公告)号：US12072128B2
公开(公告)日：2024-08-27
申请号：US18126065
申请日：2023-03-24
Applicant: RESEARCH PRODUCTS CORPORATION
Inventor： Erick L. Sokn , Stephen Moon , Aditya Rane , Sergey Baranov , Charles Baker
IPC: F25B47/02
CPC classification number: F25B47/02
Abstract: A dehumidifying system and method for reducing humidity in ambient air is disclosed. The system includes a circulation unit, a refrigeration unit, a condensate receptacle for receiving condensate generated by the refrigeration unit, a controller to control both the circulation and refrigeration units, and wherein the controller receives input from one or more ambient sensors configured to sense ambient conditions, and a user interface configured to receive input from a user. The system implements variable speed control within the circulation and/or refrigeration unit to maximize efficiency or capacity under a current threshold, and enables the system to delay the need for defrost cycling during low temperature operation.
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8.发明公开公开(公告)号：US20240271845A1
公开(公告)日：2024-08-15
申请号：US18567912
申请日：2022-06-02
Applicant: KPS GLOBAL LLC
Inventor： Rahul Sharma , James M. Costanza
CPC classification number: F25B49/022 , F25B47/02 , F25B2600/01 , F25B2600/0251 , F25B2700/2104
Abstract: An example control system for a temperature controlled environment operates by monitoring sensor data indicating a temperature associated with a temperature controlled environment, starting a compressor cycle, and ending the compressor cycle based on: the time since the start of the compressor cycle exceeding a maximum compressor runtime; the temperature being at or below a first set point temperature and the time since the start of the compressor cycle reaching a first minimum compressor runtime; the time since the start of the compressor cycle reaching a threshold duration of time without the temperature associated with the return airstream reaching the first set point temperature, and the temperature being at or below a second, higher, set point temperature; and/or the temperature being at or below a minimum temperature and the time since the start of the compressor cycle exceeding a second, shorter, minimum compressor runtime.
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公开(公告)号：US12038211B2
公开(公告)日：2024-07-16
申请号：US17641713
申请日：2020-09-03
Applicant: Gree Electric Appliances, Inc. of Zhuhai
Inventor： Hua Liu , Shiqiang Zhang , Limin Li , Chao Zhou , Mengmeng Jin , Shiqiang Zhu
CPC classification number: F25B47/022 , F25B13/00 , F25B2313/008 , F25B2347/02 , F25B2400/0411 , F25B2400/23
Abstract: A continuous heating control system and method, and an air-conditioning device. The system includes a defrosting solenoid valve (1) arranged on a bypass pipeline, wherein one end of the bypass pipeline is connected to an oil separator (2), and the other end of the bypass pipeline is connected to an outdoor heat exchanger (3); and a heating structure which is arranged at the bottom of a gas separator (4) and used for heating the gas separator (4).
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公开(公告)号：US12013159B2
公开(公告)日：2024-06-18
申请号：US17620163
申请日：2019-09-20
Applicant: Mitsubishi Electric Corporation
Inventor： Yoshiyuki Tada , Masakazu Kondo , Masakazu Sato
CPC classification number: F25B47/02 , F25B13/00 , F25B41/20 , F25B49/02 , F25B2313/0251
Abstract: An air-conditioning apparatus includes a four-way valve, a first three-way valve and a second three-way valve each having a closed port, a compressor, an indoor heat exchanger, an expansion valve, a first outdoor heat exchanger, a second outdoor heat exchanger, a bypass expansion valve, a check valve, a discharge temperature sensor, an indoor pipe temperature sensor, an indoor temperature sensor, a current sensor, and a controller configured to detect switching failure at the four-way valve, the first three-way valve, and the second three-way valve. The controller is configured to detect switching failure at the four-way valve, the first three-way valve, or the second three-way valve by using the temperatures measured by the discharge temperature sensor, the indoor pipe temperature sensor, and the indoor temperature sensor and the current in consideration of an operation status.
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