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1. 发明公开

US20240288205A1 BIDIRECTIONAL THROTTLE VALVE, FIRST AIR CONDITIONING SYSTEM AND SECOND AIR CONDITIONING SYSTEM 审中-公开
公开(公告)号：US20240288205A1
公开(公告)日：2024-08-29
申请号：US18645511
申请日：2024-04-25
申请人： ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
发明人： Yuanyang LIN , Lihua XUAN , Jing FENG
IPC分类号： F25B41/325 , F25B13/00
CPC分类号： F25B41/325 , F25B13/00 , F25B2313/02741
摘要： A bidirectional throttle valve and an air conditioning system provided with same are provided. The bidirectional throttle valve includes a valve pipe, an inner wall of the first valve core cooperates with an inner wall of the first valve opening to form a first circulation channel. An inner wall of the second valve core cooperates with an inner wall of the second valve opening to form a second circulation channel. When the first valve opening and the second valve opening are in an opened state, a flow area of the first circulation channel is greater than a flow area of the second circulation channel. And the second valve core cooperates with the second valve opening to achieve throttling. The present disclosure further provides an air conditioning system, which includes the above bidirectional throttle valve.

2. 发明公开

US20240271840A1 REFRIGERATION CYCLE APPARATUS 审中-公开
公开(公告)号：US20240271840A1
公开(公告)日：2024-08-15
申请号：US18565251
申请日：2021-08-03
申请人： Mitsubishi Electric Corporation
发明人： Satoru YANACHI
IPC分类号： F25B41/42
CPC分类号： F25B41/42 , F25B2313/02741 , F25B2400/23 , F25B2600/2501 , F25B2600/2513
摘要： A refrigeration cycle apparatus includes: a first heat exchanger including heat transfer tubes and a first header configured to distribute refrigerant to the heat transfer tubes; a gas-liquid separator configured to separate the refrigerant that flows into the first heat exchanger into gas refrigerant and liquid refrigerant; a gas bypass circuit configured to cause the gas refrigerant to flow from the gas-liquid separator into the first header; a liquid bypass circuit configured to cause the liquid refrigerant to flow from the gas-liquid separator into the first header; and a bypass valve provided at at least one of the gas bypass circuit and the liquid bypass circuit. The gas bypass circuit is connected to the first header at a position which is located downward of a position where the liquid bypass circuit is connected to the first header, in a flow direction of the liquid refrigerant in the first header.

3. 发明公开

US20240117886A1 FOUR-WAY VALVE AND AIR CONDITIONING SYSTEM PROVIDED WITH SAME 审中-公开
公开(公告)号：US20240117886A1
公开(公告)日：2024-04-11
申请号：US18542618
申请日：2023-12-16
申请人： ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
发明人： Zhongbo FENG , Yongbin XUAN , Zhehang CHEN
IPC分类号： F16K11/085 , F25B41/26
CPC分类号： F16K11/0853 , F25B41/26 , F25B2313/02741
摘要： A four-way valve and an air conditioning system provided with same are provided. The four-way valve includes a valve body, a piston and a sealing member. The valve body is provided with a valve cavity. The piston is movably disposed in the valve cavity. The sealing member is disposed on the piston and at least a part of the sealing member fits against an inner wall of the valve cavity. The valve cavity is separated into a high-pressure chamber and a low-pressure chamber by the piston. The piston is provided with an air passage structure which is in communication with the sealing member, and the air passage structure is in communication with the high-pressure chamber. A medium in the high-pressure chamber is in contact with the sealing element through the air passage structure.

4. 发明公开

US20230358446A1 REFRIGERATION CYCLE DEVICE 审中-公开
公开(公告)号：US20230358446A1
公开(公告)日：2023-11-09
申请号：US18044844
申请日：2020-11-13
申请人： Mitsubishi Electric Corporation
发明人： Kenta MURATA
IPC分类号： F25B41/20 , F25B13/00
CPC分类号： F25B13/00 , F25B41/20 , F25B2313/02741
摘要： To provide a refrigeration cycle device that has a refrigerant flow path with a structure to form a counter flow of air and refrigerant not only during cooling, but also during heating, and that allows low-pressure two-phase refrigerant to flow through a liquid pipe and can thereby reduce the amount of refrigerant needed. The refrigeration cycle device includes: an outdoor unit 1 including a compressor 5, a four-way valve 6, an outdoor heat exchanger 7, and an outdoor expansion valve 9, the four-way valve 6 being configured to switch between cooling operation and heating operation; an indoor unit 2 including an indoor heat exchanger 12 and an indoor expansion valve 14; and a gas pipe 3 and a liquid pipe 4 configured to connect the outdoor unit 1 and the indoor unit 2; and at least either one of a first bridge circuit 10 having a configuration including a plurality of flow path opening-closing units 11 to allow the refrigerant to flow through the outdoor heat exchanger 7 in the same direction both during the cooling operation and during the heating operation, and a second bridge circuit 15 having a configuration including a plurality of flow path opening-closing units 16 to allow the refrigerant to flow through the indoor heat exchanger 12 in the same direction both during the cooling operation and during the heating operation.

5. 发明公开

US20230349599A1 ENERGY EFFICIENT HEAT PUMP WITH FLOW REGULATION SYSTEM 审中-公开
公开(公告)号：US20230349599A1
公开(公告)日：2023-11-02
申请号：US18308268
申请日：2023-04-27
申请人： Johnson Controls Tyco IP Holdings LLP
发明人： Andrew Leroy Hjortland
IPC分类号： F25B13/00 , F25B49/02
CPC分类号： F25B13/00 , F25B49/022 , F25B2313/02741 , F25B2313/0292
摘要： An energy efficient heat pump for a heating, ventilation, and air conditioning (HVAC) system includes a compressor system having a plurality of compressors configured to direct a working fluid along a working fluid circuit of the heat pump, a suction conduit configured to direct the working fluid to the compressor system, a first suction conduit portion extending from the suction conduit to a first compressor of the plurality of compressors, a second suction conduit portion extending from the suction conduit to a second compressor of the plurality of compressors, and a control valve disposed along the suction conduit between the first suction conduit portion and the second suction conduit portion.

6. 发明授权

US10077925B2 Refrigeration apparatus 有权
公开(公告)号：US10077925B2
公开(公告)日：2018-09-18
申请号：US15070843
申请日：2016-03-15
申请人： DAIKIN INDUSTRIES, LTD.
发明人： Naoto Horiuchi
IPC分类号： F25D21/06 , F25B13/00 , F25B47/02 , F25B25/00 , F25B49/02
CPC分类号： F25B13/00 , F25B25/005 , F25B47/025 , F25B49/025 , F25B2313/003 , F25B2313/02741 , F25B2313/0292 , F25B2313/0294 , F25B2313/0314 , F25B2313/0315 , F25B2400/13 , F25B2600/2509 , F25B2600/2513
摘要： A refrigeration apparatus includes a compressor, first and second heat exchangers, first and second electric valves, a passage-switching valve, a supercooling heat exchanger, and a controller. The first and second valves are disposed in first and second refrigerant passages. The supercooling heat exchanger conducts heat exchange between refrigerant flowing through the first and second refrigerant passages. The controller transitions to a defrosting operation mode upon determining that frost has formed on the second heat exchanger during a heating operation mode. The controller executes a defrosting preparatory control and a defrosting control after the defrosting preparatory control during the defrosting operation mode. The controller switches the passage-switching valve during the defrosting control. The controller narrows the opening degree of the first electric valve and controls the opening degree of the second electric valve to a minimum opening degree during the defrosting preparatory control.

7. 发明申请

US20180180306A1 OUTDOOR UNIT 审中-公开
公开(公告)号：US20180180306A1
公开(公告)日：2018-06-28
申请号：US15738216
申请日：2016-07-19
申请人： Mitsubishi Electric Corporation
发明人： Yutaka AOYAMA
IPC分类号： F24F1/36 , F24F13/22 , F25B13/00 , F25B47/02
CPC分类号： F24F1/36 , F24F11/42 , F24F13/22 , F25B13/00 , F25B47/02 , F25B47/022 , F25B47/025 , F25B2313/0253 , F25B2313/02731 , F25B2313/02741
摘要： An outdoor unit being part of a refrigeration cycle apparatus in which refrigerant circulates and having a maintenance opening port includes an open-close panel configured to cover the maintenance opening port by being attached openably and closably to the outdoor unit, a heat source side heat exchanger disposed above the maintenance opening port and provided at least with an open-close panel-facing heat exchange unit facing a plane containing the open-close panel, a drainage channel located at least below the open-close panel-facing heat exchange unit of the heat source side heat exchanger, wherein the heating energy supply unit includes a refrigerant pipe configured to pass refrigerant higher in temperature than a freezing point of water in an upstream direction from a downstream direction of the drainage channel.

8. 发明授权

US10006671B2 Air conditioning system and method for controlling same 有权
公开(公告)号：US10006671B2
公开(公告)日：2018-06-26
申请号：US15296393
申请日：2016-10-18
申请人： GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD.
发明人： Ligao Xie , Jinbo Li , Zhu Lin , Yong Wang
IPC分类号： F25B43/00 , F25B13/00 , F25B49/02 , F25B1/10 , F25B41/04
CPC分类号： F25B13/00 , F25B1/10 , F25B41/04 , F25B49/02 , F25B2313/02741 , F25B2400/075 , F25B2400/13 , F25B2400/23 , F25B2600/2507 , F25B2700/171 , F25B2700/2104 , F25B2700/2106
摘要： An air conditioning system and a method for controlling the same are provided. The air conditioning system includes an enhanced vapor injection compressor, first and second direction switching assemblies, first and second heat exchangers and a flash evaporator. The enhanced vapor injection compressor has an air discharge port, an air supplement port, first and second air suction ports, and an air return port. Pressure in a sliding vane chamber of an air cylinder corresponding to the second air suction port is equal to a discharge pressure at the air discharge port. A first pipe port of the first direction switching assembly is connected with the second air suction port, a second pipe port thereof is connected with the air discharge port and a third pipe port thereof is connected with the liquid accumulator, and the first pipe port is communicated with one of the second and third pipe ports.

9. 发明授权

US09989284B2 Refrigeration apparatus 有权
公开(公告)号：US09989284B2
公开(公告)日：2018-06-05
申请号：US14402080
申请日：2013-05-08
申请人： DAIKIN INDUSTRIES, LTD.
发明人： Satoshi Kawano , Shinya Matsuoka
IPC分类号： F25B1/00 , F25B13/00 , F25D17/02 , F25B43/00 , F25B9/00 , F25B49/02 , F25B31/00
CPC分类号： F25B43/006 , F25B9/002 , F25B13/00 , F25B31/004 , F25B49/02 , F25B2313/006 , F25B2313/0233 , F25B2313/02741 , F25B2400/13 , F25B2500/16
摘要： A refrigeration apparatus uses R32 as refrigerant, and includes a compressor, condenser, expansion mechanism, evaporator, accumulator, branching flow path, opening degree adjustment valve disposed in the branching flow path, injection-use heat exchanger and a first injection flow path. The accumulator has an inside space to separate and accumulate refrigerant. The injection-use heat exchanger causes heat exchange between refrigerant flowing through the main refrigerant flow path and that has passed through the opening degree adjustment valve of the branching flow path. The first injection flow path guides the refrigerant that has flowed through the branching flow path and exited the injection-use heat exchanger to the inside space of the accumulator. A distal end of the first injection flow path is located in a height position separated by a dimension from a bottom of the inside space. The dimension is 0 to 0.3 times a height dimension of the inside space.

10. 发明授权

US09964343B2 Refrigeration cycle apparatus 有权
公开(公告)号：US09964343B2
公开(公告)日：2018-05-08
申请号：US15300347
申请日：2014-04-21
申请人： Mitsubishi Electric Corporation
发明人： Kensaku Hatanaka , Kosuke Tanaka , Koji Azuma
IPC分类号： F25B13/00
CPC分类号： F25B13/00 , F24F11/89 , F25B2313/004 , F25B2313/006 , F25B2313/0231 , F25B2313/0233 , F25B2313/0253 , F25B2313/0272 , F25B2313/02741 , F25B2339/047 , F25B2400/23 , F25B2600/13 , Y02B30/745
摘要： A flow rate of circulating water to a water heat exchanger is determined by multiplying, by a rated water flow rate, a ratio of an absolute value of a difference between a total operation capacity of each of indoor side heat exchangers serving as a heating load and a total operation capacity of each of indoor side heat exchangers serving as a cooling load to a total operation capacity of the water heat exchanger.

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