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公开(公告)号：US12222143B2
公开(公告)日：2025-02-11
申请号：US17301263
申请日：2021-03-30
Applicant: Carrier Corporation
Inventor： Anthony S. Molavi , Scott T. McDonough , William T. Slay
Abstract: A vapor compression system including: a compressor having a compressor suction port and a compressor discharge port configured to circulate a working fluid through a flow circuit; a first heat exchanger operably coupled to the compressor discharge port; a second heat exchanger operably coupled to the compressor suction port; a heat recovery heat exchanger operably coupled to the first and second heat exchangers wherein the heat recovery heat exchanger is configured to: receive the working fluid in a first phase from the first heat exchanger; receive the working fluid in a second phase from the second heat exchanger; exchange heat between the working fluid in the first phase and the second phase; and a bypass valve positioned between the heat recovery heat exchanger discharge and the second heat exchanger and defining a first flow path and a second flow path.
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公开(公告)号：US12222139B2
公开(公告)日：2025-02-11
申请号：US18100370
申请日：2023-01-23
Applicant: Carrier Corporation
Inventor： Ahmad M. Mahmoud , Parmesh Verma , Zuojun Shi , Frederick J. Cogswell
Abstract: A system has: a compressor having a suction port and a discharge port; an ejector having a motive flow inlet, a suction flow inlet, and an outlet; a separator having an inlet, a vapor outlet, and a liquid outlet; a first heat exchanger; an expansion device; and a second heat exchanger. Conduits and valves are positioned to provide alternative operation in: a cooling mode and a heating mode. In the cooling mode, a needle of the ejector is closed. In the heating mode refrigerant passes sequentially from a first section of the second heat exchanger to a second section. In the cooling mode refrigerant passes in parallel through the first section and the second section.
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公开(公告)号：US20250027689A1
公开(公告)日：2025-01-23
申请号：US18709056
申请日：2022-01-19
Applicant: Mitsubishi Electric Corporation
Inventor： Takuya KITAMURA , Hiroyuki OKANO
Abstract: An air-conditioning apparatus includes a heat source unit, an indoor unit, a relay unit connected to the heat source unit by a low-pressure pipe and a high-pressure pipe, connected to the indoor unit via a gas branch pipe and a liquid branch pipe, and a controller. The relay unit includes a branch portion at which the gas branch pipe and the low-pressure pipe communicate with each other when the indoor unit performs the cooling operation and the gas branch pipe and the high-pressure pipe communicate with each other when the indoor unit performs the heating operation. The branch portion includes an expansion valve that is connected to the gas branch pipe and the low-pressure pipe. The controller is configured to, when the heat source unit is stopped, control the expansion valve to allow the gas branch pipe and the low-pressure pipe to communicate with each other.
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公开(公告)号：US12188164B2
公开(公告)日：2025-01-07
申请号：US17686019
申请日：2022-03-03
Applicant: WHIRLPOOL CORPORATION
Inventor： Claudio Civanelli , Daniele Martinello
Abstract: An appliance air/water handling system includes a rotating drum, airflow and fluid paths for directing process air and fluid, respectively, therethrough. First and second heat exchangers are in direct engagement with the airflow and fluid paths, respectively. A reversible refrigerant circuit delivers refrigerant through the first and second heat exchangers to alternatively define washing and drying conditions. In the washing condition the first heat exchanger cools the process air into cooled process air, and the second heat exchanger heats the fluid to define a heated fluid that is directed into the drum. In the drying condition the first heat exchanger heats the process air to define heated process air that is directed through the drum and through a third heat exchanger, and the second heat exchanger cools the fluid to define a cooled fluid that is directed to the third heat exchanger intersect with the heated process air.
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公开(公告)号：US20250003645A1
公开(公告)日：2025-01-02
申请号：US18697230
申请日：2021-10-28
Applicant: Mitsubishi Electric Corporation
Inventor： Shunya GYOTOKU
Abstract: In a first operation mode, a flow path switching device connects a discharge port to a refrigerant inlet of a first heat exchanger, connects a refrigerant outlet of the first heat exchanger to a refrigerant inlet of a first flow path, connects a refrigerant outlet of a first expansion valve to a refrigerant inlet of a second heat exchanger, and connects a refrigerant outlet of the second heat exchanger to a suction port. In a second operation mode, the flow path switching device connects the discharge port to the refrigerant inlet of the second heat exchanger, connects the refrigerant outlet of the second heat exchanger to the refrigerant inlet of the first flow path, connects the refrigerant outlet of the first expansion valve to the refrigerant inlet of the first heat exchanger, and connects the refrigerant outlet of the first heat exchanger to the suction port.
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公开(公告)号：US12173944B2
公开(公告)日：2024-12-24
申请号：US18003172
申请日：2020-08-21
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Kazunori Sakanobe , Kenta Yuasa , Yasuhiko Wada , Chitose Tanaka
Abstract: A refrigerating and air-conditioning apparatus performs a defrosting operation. The refrigerating and air-conditioning apparatus includes a refrigerant circuit, a temperature sensor, and a heat generation control unit. In the refrigerant circuit, a compressor, a first heat exchanger, an expansion device, a second heat exchanger, and a four-way valve are connected to each other by pipes to allow refrigerant to circulate through the refrigerant circuit. The temperature sensor measures a temperature of the compressor. The heat generation control unit increases a temperature of the compressor when the heat generation control unit detects a decrease in a value measured by the temperature sensor in a defrosting operation performed on the first heat exchanger.
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公开(公告)号：US20240410637A1
公开(公告)日：2024-12-12
申请号：US18731236
申请日：2024-06-01
Applicant: Carrier Corporation
Abstract: The present invention provides a heat pump system and a wastewater tank. The heat pump system comprises: a main circuit connecting a compressor, a first heat exchanger, a throttling element, and a refrigerant pipeline of a second heat exchanger; a wastewater tank for receiving and storing domestic wastewater; a wastewater heat recovery circuit connecting a driving device, a first heat exchange unit, and a defrosting pipeline of the second heat exchanger, wherein the second heat exchanger is a three-medium fluid heat exchanger, the defrosting pipeline and the refrigerant pipeline are thermally coupled with each other, and the first heat exchange unit is thermally coupled with the wastewater tank; wherein, the heat pump system has a fast defrosting mode in which the wastewater heat recovery circuit transports residual heat from wastewater in the wastewater tank to the second heat exchanger to accelerate defrosting.
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公开(公告)号：US12158293B2
公开(公告)日：2024-12-03
申请号：US17922025
申请日：2020-06-23
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroki Ishiyama
Abstract: The refrigerant circulation direction is switched between first and second circulation directions. In the first circulation direction, the refrigerant is circulated in order of a first heat exchanger, a compressor, a second heat exchanger, and a first decompressor, and circulated in order of the first heat exchanger, the compressor, a third heat exchanger, and a second decompressor. A controller identifies a specific heat exchanger from among the second heat exchanger and the third heat exchanger. When an elapsed time from activation of the compressor is shorter than a reference time, the controller makes an opening degree of a specific decompressor that communicates with the specific heat exchanger larger than an opening degree of the decompressor that is among the first decompressor and the second decompressor and different from the specific decompressor, and sets the refrigerant circulation direction to the second circulation direction opposite to the first circulation.
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9.发明授权
公开(公告)号：US12140359B2
公开(公告)日：2024-11-12
申请号：US17507403
申请日：2021-10-21
Applicant: Copeland LP
Inventor： Andrew M. Welch , William Bradford Boggess , Rajan Rajendran
Abstract: Climate control systems and methods of operating them are provided that circulate a working fluid including a high glide refrigerant blend having first and second refrigerants with a difference in boiling points ≥about 25° F. at atmospheric pressure. The system includes a gas-liquid separation vessel that generates a vapor stream and a liquid stream. A compressor receives the vapor stream and generates a pressurized vapor stream. A liquid pump receives the liquid stream and generates a pressurized liquid stream. A condenser is disposed downstream of the compressor and liquid pump and receives and cools the pressurized mixed vapor and liquid stream. An evaporator receives and at least partially vaporizes the multiphase working fluid and directs it to the gas-liquid separating vessel. An expansion device between the condenser and the evaporator processes the multiphase working fluid stream. Lastly, a fluid conduit for circulating the working fluid through the components is provided.
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公开(公告)号：US12140358B2
公开(公告)日：2024-11-12
申请号：US17608913
申请日：2020-06-10
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Takuro Yamada , Eiji Kumakura , Atsushi Yoshimi , Ikuhiro Iwata , Tomoatsu Minamida
Abstract: A refrigerant cycle system includes: a primary-side cycle of a vapor compression type that circulates a first refrigerant; a secondary-side cycle of a vapor compression type that circulates a second refrigerant; and a cascade heat exchanger that exchanges heat between the first refrigerant and the second refrigerant. The secondary-side cycle includes a secondary-side heat exchanger that uses cold or heat obtained by the second refrigerant from the cascade heat exchanger. The secondary-side heat exchanger includes a flat multi-hole pipe.
