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公开(公告)号：US20210300155A1
公开(公告)日：2021-09-30
申请号：US17261827
申请日：2019-06-20
Applicant: SANDEN HOLDINGS CORPORATION
Inventor： Yasuaki KANOU
Abstract: There is provided a vehicle air conditioning apparatus being capable of cooling, heating, and dehumidifying the vehicle compartment. A communication path is formed to allow communication between part of the first ventilation flue downstream of the heat absorbing unit in an air flow direction and part of the second ventilation flue upstream of the heat releasing unit in the air flow direction. The communication path is opened and closed by a communication path opening and closing damper. By this means, it is possible to perform the dehumidifying operation by opening the communication path without need of devices such as a dedicated outdoor heat exchanger, and a solenoid valve and a four-way valve to switch the refrigerant flow path in the refrigerant circuit.
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公开(公告)号：US20210115917A1
公开(公告)日：2021-04-22
申请号：US16496015
申请日：2017-02-13
Applicant: SANDEN HOLDINGS CORPORATION
Inventor： Hironobu INABA
IPC: F04C2/02
Abstract: To prevent or reduce functional disturbance of a back-pressure control valve caused by contamination, a scroll compressor includes: a scroll unit having a fixed scroll and an orbiting scroll; a discharge chamber (H3) into which fluid compressed by the scroll unit is discharged; a back-pressure chamber (H4) configured to apply a back pressure that presses the orbiting scroll against the fixed scroll; and a switching valve (900) disposed at some midpoint of a back-pressure supply passage (L1) connecting the discharge chamber (H3) and the back-pressure chamber (H4) in communication. The switching valve (900) is configured to switch between a first state in which the switching valve (900) connects the discharge chamber (H3) with the back-pressure chamber (H4) in communication and a second state in which the switching valve (900) connects the back-pressure chamber (H4) with a suction chamber (H1), in accordance with an operational state of the scroll unit.
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公开(公告)号：US10315488B2
公开(公告)日：2019-06-11
申请号：US15304942
申请日：2015-03-16
Applicant: Sanden Holdings Corporation
Inventor： Ryo Miyakoshi , Kenichi Suzuki , Kouhei Yamashita
Abstract: There is disclosed a refrigeration device which is capable of inexpensively improving durability of an electronic expansion valve (an outdoor expansion valve) for use in a refrigerant circuit. A vehicle air conditioner 1 has a refrigerant circuit R including an outdoor expansion valve 6. The vehicle air conditioner includes a controller which controls energization to a coil of the outdoor expansion valve 6, and this controller executes operation limit control to limit an operation of the outdoor expansion valve 6 so that a temperature of the coil of the outdoor expansion valve 6 is not in excess of a predetermined value. The controller lengthens a control period of the outdoor expansion valve 6 and suppresses an operation amount of the outdoor expansion valve 6 within a predetermined limit value to limit a duty factor, in the operation limit control.
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公开(公告)号：US10279654B2
公开(公告)日：2019-05-07
申请号：US14914587
申请日：2014-09-02
Applicant: Sanden Holdings Corporation
Inventor： Ryo Miyakoshi , Kenichi Suzuki
Abstract: There is disclosed an air conditioning device for vehicle in which in a defrosting mode to defrost an outdoor heat exchanger, the defrosting of the outdoor heat exchanger can be achieved without hindrance while maintaining heating of a vehicle interior. A refrigerant discharged from a compressor 2 radiates heat in a radiator 4 and the refrigerant by which heat has been radiated is decompressed and then absorbs heat in an outdoor heat exchanger 7 to heat the vehicle interior. The air conditioning device for vehicle includes an injection circuit 40 which distributes a part of the refrigerant flowing out from the radiator 4 to return the part to the compressor 2. When a controller 32 passes the high-temperature refrigerant through the outdoor heat exchanger 7 to perform defrosting, the controller operates the injection circuit 40 to return the refrigerant to the compressor 2.
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公开(公告)号：US10252600B2
公开(公告)日：2019-04-09
申请号：US15513843
申请日：2015-09-18
Applicant: SANDEN HOLDINGS CORPORATION
Inventor： Ryo Miyakoshi , Kenichi Suzuki , Kouhei Yamashita
Abstract: There is disclosed an air-conditioning apparatus for vehicle which is capable of selecting an appropriate operation mode while inhibiting the operation mode from being unnecessarily changed, and achieving rapid and stable vehicle interior air conditioning. A controller has respective operation modes of a heating mode, a dehumidifying and heating mode, a dehumidifying and cooling mode, and a cooling mode, and selects and executes these operation modes. The controller has a dehumidifying and heating mode maximum radiator temperature MAP and a dehumidifying and cooling mode maximum radiator temperature MAP. The controller selects an operation mode in which a radiator target temperature TCO is achievable by heat radiation in a radiator 4 with reference to each MAP, on startup or at a time of change of the operation mode.
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Patent Agency Ranking
公开(公告)号：US20190085834A1
公开(公告)日：2019-03-21
申请号：US15532797
申请日：2015-12-01
Applicant: SANDEN HOLDINGS CORPORATION
Inventor： Yukihiko TAGUCHI
IPC: F04B27/18
Abstract: An object is to provide a variable displacement compressor in which a structure is simple and it is easy to lay out valves. On a downstream side of a first control valve that controls an opening degree of a pressure supply passage, a second control valve is provided, which includes a spool having a first valve portion and a second valve portion. When a pressure Pm of the pressure supply passage is higher than a pressure Pc of the crank chamber, the first valve portion opens the pressure supply passage, and the second valve portion closes the first pressure release passage. When the pressure Pm is lower than the pressure Pc, the first valve portion closes the pressure supply passage, and the second valve portion sets an opening degree of the first pressure release passage to a maximum opening degree.
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公开(公告)号：US10131208B2
公开(公告)日：2018-11-20
申请号：US15703415
申请日：2017-09-13
Applicant: Sanden Holdings Corporation
Inventor： Kenichi Suzuki , Megumi Shigeta
Abstract: There is disclosed a vehicle air-conditioning device in which a heating qualification by gas injection can sufficiently be obtained. The vehicle air-conditioning device comprises a compressor 2 which compresses a refrigerant, an air flow passage 3 through which air to be supplied into a vehicle interior flows, a radiator 4 disposed in the air flow passage to let the refrigerant radiate heat, a heat absorber 9 disposed in the air flow passage to let the refrigerant absorb heat, an outdoor heat exchanger 7 disposed outside the vehicle interior to let the refrigerant radiate or absorb heat, and a controller. The controller executes a heating mode in which the refrigerant discharged from the compressor 2 radiates heat in the radiator 4 and the refrigerant by which heat has been radiated is decompressed and then absorbs heat in the outdoor heat exchanger 7. The vehicle air-conditioning device comprises an injection circuit 40 which distributes a part of the refrigerant flowing out from the radiator 4 to return the refrigerant to the middle of compression by the compressor 2, and the injection circuit 40 has an expansion valve 30, and a discharge side heat exchanger 35 which performs heat exchange between the refrigerant decompressed by the expansion valve 30 and the refrigerant discharged from the compressor 2 before flowing into the radiator 4.
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公开(公告)号：US10059168B2
公开(公告)日：2018-08-28
申请号：US15512409
申请日：2015-09-18
Applicant: SANDEN HOLDINGS CORPORATION
Inventor： Kenichi Suzuki , Ryo Miyakoshi , Kouhei Yamashita
CPC classification number: B60H1/00978 , B60H1/00921 , B60H1/2221 , B60H3/024 , B60H2001/00928 , B60H2001/00949 , B60H2001/00957 , F25B5/00 , F25B40/00 , F25B41/04
Abstract: There is disclosed a vehicle air conditioner device which is capable of continuing an air conditioning operation also in a case where a disconnection failure occurs in a solenoid valve to change a flow of a refrigerant in each operation mode. Respective solenoid valves 17, 20, 21 and 22 to change the respective operation modes of a vehicle air conditioner device 1 are constituted so that the flow of the refrigerant changes to a cooling mode when all the solenoid valves 17, 20, 21 and 22 are non-energized. The vehicle air conditioner device executes a cooling mode during failure in which a controller adjusts all the solenoid valves 17, 20, 21 and 22 to be non-energized and operates a compressor 2, in a case where the disconnection failure occurs in one of the solenoid valves 17, 20, 21 and 22.
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公开(公告)号：US10040337B2
公开(公告)日：2018-08-07
申请号：US14909353
申请日：2014-08-05
Applicant: Sanden Holdings Corporation
Inventor： Ryo Miyakoshi , Kenichi Suzuki , Kouhei Yamashita
Abstract: There is disclosed a vehicle air conditioner in which a refrigerant subcool degree of a radiator to satisfy both a high pressure and a refrigerant flow rate during heating can appropriately be controlled to achieve improvement of a heating capability. The vehicle air conditioner comprises a compressor 2 which compresses a refrigerant, a radiator 4 which lets the refrigerant radiate heat, an outdoor heat exchanger 7 disposed outside the vehicle interior to let the refrigerant radiate or absorb heat, and a controller. The controller executes a heating mode to let the refrigerant discharged from the compressor 2 radiate heat in the radiator 4, decompress the refrigerant by which heat has been radiated and then absorb heat in the outdoor heat exchanger 7. The controller 32 has a high pressure priority mode to increase a target radiator subcool degree TGSC of the radiator 4 in a direction in which the high pressure is set to a predetermined high value, and a revolution number priority mode to decrease the target radiator subcool degree of the radiator in a direction in which the revolution number of the compressor 2 is set to a predetermined high value.
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公开(公告)号：US09988945B2
公开(公告)日：2018-06-05
申请号：US15311378
申请日：2015-05-14
Applicant: SANDEN HOLDINGS CORPORATION
Inventor： Shinichiro Mizoguchi , Hiroyuki Nagai , Tomonori Haraguchi
CPC classification number: F01K13/003 , F01K11/00 , F01K23/06 , F01K23/065 , F01K23/10 , F01K23/14 , F02G5/02 , F02G5/04 , F16D27/00 , G07C5/0808 , Y02T10/16 , Y02T10/166
Abstract: Apparatus for utilizing heat wasted from an engine includes first pressure detecting means (73) and first temperature detecting means (81) for detecting a pressure and a temperature in a refrigerant passage extending from a condenser (38) to a refrigerant pump (32), second pressure detecting means (72) and second temperature detecting means (82) for detecting a pressure and a temperature in a refrigerant passage extending from a heat exchanger (36) to an expansion device (37), and control means (71) responsive to these four detecting means when operating a Rankine cycle (31). Means (71) is for diagnosing whether or not an electromagnetic clutch (35) is stuck responsive to either the first pressure detecting means (73) and the first temperature detecting means (81), or the second pressure detecting means (72) and the second temperature detecting means (82).
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