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公开(公告)号：US11938783B2
公开(公告)日：2024-03-26
申请号：US17380774
申请日：2021-07-20
Applicant: DENSO CORPORATION
Inventor： Kengo Sugimura , Satoshi Ito , Satoshi Suzuki , Kosuke Shiratori
CPC classification number: B60H1/00278 , B60H1/00878 , B60H1/323 , B60L58/26 , F25B25/005 , F25B41/20 , F25B49/02 , B60H2001/00307 , B60H2001/00928
Abstract: A refrigeration cycle device including a first pressure reducing valve, a first evaporator that exchanges heat between the refrigerant decompressed in the first pressure reducing valve and air, a second pressure reducing valve that is disposed in parallel with the first pressure reducing valve; a second evaporator in which the refrigerant decompressed in the second pressure reducing valve to absorbs heat from a battery; a third pressure reducing valve that reduces the pressure of the refrigerant evaporated in the second evaporator; and a controller configured to control opening degrees of the second pressure reducing valve and the third pressure reducing valve. The controller performs a limit control for controlling the opening degree of the second pressure reducing valve to an opening degree of smaller one of a battery cooling opening degree and an air cooling opening degree.
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公开(公告)号：US12038207B2
公开(公告)日：2024-07-16
申请号：US17191487
申请日：2021-03-03
Applicant: DENSO CORPORATION
Inventor： Kazuhiro Tada , Kengo Sugimura , Hiroyuki Kobayashi , Yuichi Kami , Satoshi Ito
Abstract: The refrigeration cycle device includes a compressor, an outside heat exchanger, a cooling pressure reducing unit, an evaporator, a branch portion, a cool down pressure reducing unit, a temperature adjusting unit, a merging portion, a bypass passage, and a first on-off valve. The temperature adjusting unit includes a temperature adjusting heat exchange unit and adjusts a temperature of a temperature adjustment target object. During a cooling and cool down mode, the outside heat exchanger functions as a radiator, and the evaporator and the temperature adjusting heat exchange unit function as heat absorbers. During a target object warm up mode, the refrigerant discharged from the compressor is guided to the temperature adjusting heat exchange unit via the bypass passage, and the heat of the discharged refrigerant is used as a heat source for heating the temperature adjustment target object.
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公开(公告)号：US11718156B2
公开(公告)日：2023-08-08
申请号：US17110086
申请日：2020-12-02
Applicant: DENSO CORPORATION
Inventor： Hiroyuki Kobayashi , Yuichi Kami , Kengo Sugimura , Satoshi Ito
CPC classification number: B60H1/3205 , B60H1/04 , B60H1/323 , B60H1/3223 , B60H1/00278 , B60H2001/325 , B60H2001/3242 , B60H2001/3257
Abstract: A refrigeration cycle device includes a compressor, a radiator, an air-conditioning heat exchanger, a cooling heat exchanger, an air-conditioning decompression unit, a cooler-unit decompression unit, a refrigerant flow rate detector, and a controller. The radiator is configured to radiate heat of refrigerant discharged from the compressor. The air-conditioning heat exchanger absorbs heat from air to evaporate the refrigerant. The cooling heat exchanger is arranged in parallel with the air-conditioning heat exchanger in the flow of refrigerant. The air-conditioning decompression unit adjusts a decompression amount of the refrigerant flowing into the air-conditioning heat exchanger. The cooler-unit decompression unit adjusts a decompression amount of the refrigerant flowing into the cooling heat exchanger. The controller controls the operation of the cooler-unit decompression unit so that the flow rate of the refrigerant detected by the refrigerant flow rate detector exceeds a predetermined reference flow rate.
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Patent Agency Ranking
公开(公告)号：US11073118B2
公开(公告)日：2021-07-27
申请号：US15776491
申请日：2016-11-25
Applicant: DENSO CORPORATION
Inventor： Satoshi Ito , Daiji Furuhashi , Yuuji Hidaka , Hiromi Sakai
Abstract: A fuel pump is connected to a suction filter which is provided with a filter connecting portion having a cylindrical hole and a projecting portion protruding radially inward from an inner peripheral wall of the cylindrical hole. The fuel pump suctions the fuel filtered by the suction filter. The fuel pump is provided with a suction port having multiple suction openings at a side of the suction filter so as to suction the fuel therethrough, and a pump connecting portion provided at outer side of the multiple suction openings and connected with the filter connecting portion. The pump connecting portion has an outer peripheral wall of which outer shape corresponds with a shape of the inner peripheral wall, and a dent portion denting inward from the outer peripheral wall, which the projecting portion is engaged with.
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公开(公告)号：US11525611B2
公开(公告)日：2022-12-13
申请号：US17110641
申请日：2020-12-03
Applicant: DENSO CORPORATION
Inventor： Kengo Sugimura , Satoshi Ito , Yuichi Kami , Hiroyuki Kobayashi
Abstract: A refrigerant cycle device includes a compressor, a radiator, a first expansion valve, a second expansion valve, a first evaporator, a second evaporator, and a controller. The controller is configured to switch between a first evaporator priority control and a second evaporator priority control. During the first evaporator priority control, the controller controls a throttle opening of the second expansion valve based on at least one of a temperature of a first evaporator, a temperature of a refrigerant flowing through the first evaporator, and a temperature of an air having exchanged heat in the first evaporator. During the second evaporator priority mode, the controller controls the throttle opening based on a refrigerant state of the second evaporator. When the at least one of the temperatures is equal to or greater than a switching temperature, the second priority mode is switched to the first priority mode.
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公开(公告)号：US11506404B2
公开(公告)日：2022-11-22
申请号：US17110058
申请日：2020-12-02
Applicant: DENSO CORPORATION
Inventor： Satoshi Ito , Kengo Sugimura , Yuichi Kami , Hiroyuki Kobayashi
Abstract: A refrigeration cycle device includes a heating unit, an air-heating expansion valve, an outdoor heat exchanger, an air-cooling expansion valve, an indoor evaporator, and a cooler-unit expansion valve, a cooler unit, and a refrigerant circuit switching unit. In a heating series cooler-unit mode, refrigerant is circulated in order of the heating unit, the air-heating expansion valve, the outdoor heat exchanger, the cooler-unit expansion valve, and the cooler unit. In a heating parallel cooler-unit mode, refrigerant is circulated in order of the heating unit, the air-heating expansion valve, and the outdoor heat exchanger, and refrigerant is circulated in order of the heating unit, the cooler-unit expansion valve, and the cooler unit.
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公开(公告)号：US10921034B2
公开(公告)日：2021-02-16
申请号：US16082297
申请日：2016-10-21
Applicant: DENSO CORPORATION
Inventor： Shinya Kasamatsu , Satoshi Ito , Hideaki Sato , Takuya Fuse
Abstract: During a normal operation, a refrigeration cycle device is switched to a refrigerant circuit in which heat contained in a high-pressure refrigerant flowing out of an interior radiator is stored in a heat storage member. When frost is formed on an evaporator, the refrigeration cycle device is switched to another refrigerant circuit in which the exterior heat exchanger is heated and defrosted using heat stored in the heat storage member as a heat source. The heat storage member uses a material formed by adding W (tungsten) as an additive to VO2 (vanadium dioxide) which is a transition metal oxide having a property of a phase transition between a metal and an insulator. The heat storage member effectively stores or dissipates heat depending on a temperature zone of the refrigerant, thereby suppressing an increase in energy consumption of a compressor.
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公开(公告)号：US10899197B2
公开(公告)日：2021-01-26
申请号：US16700805
申请日：2019-12-02
Applicant: DENSO CORPORATION
Inventor： Etsuhisa Yamada , Satoshi Ito , Hiroya Hasegawa
Abstract: An air conditioner includes an inside condenser, an outside heat exchanger, an inside evaporator, a refrigerant circuit switcher, and an air passage switcher. The refrigerant circuit switcher is configured to switch a layout of the refrigerant circuit to (i) a first circuit during a heating mode such that the refrigerant releases heat at the inside condenser and is decompressed to evaporate at the outside heat exchanger and (ii) a second circuit during a defrosting mode such that the refrigerant releases heat at the outside heat exchanger and is decompressed to evaporate at the inside evaporator. The air passage switcher is configured to switch the air passage to (i) a first passage during the heating mode such that the air passes through the inside evaporator and the inside condenser and (ii) a second passage during the defrosting mode such that the air bypasses the inside condenser.
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