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公开(公告)号：US20240239158A1
公开(公告)日：2024-07-18
申请号：US18413746
申请日：2024-01-16
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Ryo MICHIKAWAUCHI , Hidefumi AIKAWA , Masanari NUMATA , Yu OFUNE , Satoshi ITO , Naoki KATO , Tatsuhito MATSUMOTO
CPC classification number: B60H1/32284 , B60H1/00278 , B60H2001/00307 , B60H1/323 , B60H2001/3255 , B60H2001/3285
Abstract: A system includes a refrigeration circuit, low-temperature circuit and controller. The refrigeration circuit includes: a tiller for absorbing heat from a colling water to a refrigerant; and a condenser for releasing heat from the refrigerant to an outside, and realizes a refrigeration cycle by circulating the refrigerant therethrough. The low-temperature circuit includes the tiller and an external heat exchanger for absorbing heat from an outside to the first heat medium, and circulate the cooling water therethrough. The controller can change a heat absorption amount of the refrigerant at the tiller. The controller controls the device so that a change in the heat absorption amount of the refrigerant at the first heat exchanger in accordance with a change in a temperature of the first heat medium is reduced, if the temperature of the cooling water flowing through the first heat exchanger changes by a reference value or more.
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公开(公告)号：US20210347224A1
公开(公告)日：2021-11-11
申请号：US17380774
申请日：2021-07-20
Applicant: DENSO CORPORATION
Inventor： Kengo SUGIMURA , Satoshi ITO , Satoshi SUZUKI , Kosuke SHIRATORI
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：US20210102716A1
公开(公告)日：2021-04-08
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：US20210101450A1
公开(公告)日：2021-04-08
申请号：US17110086
申请日：2020-12-02
Applicant: DENSO CORPORATION
Inventor： Hiroyuki KOBAYASHI , Yuichi KAMI , Kengo SUGIMURA , Satoshi ITO
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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公开(公告)号：US20190032979A1
公开(公告)日：2019-01-31
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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Patent Agency Ranking
公开(公告)号：US20240239157A1
公开(公告)日：2024-07-18
申请号：US18407988
申请日：2024-01-09
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Ryo MICHIKAWAUCHI , Hidefumi AIKAWA , Masanari NUMATA , Yu OFUNE , Satoshi ITO , Naoki KATO , Tatsuhito MATSUMOTO
CPC classification number: B60H1/3228 , B60H1/00899
Abstract: A system includes: a low-temperature circuit having a chiller and in which a cooling water circulates therethrough; a heat dissipation unit for dissipating heat to an air; a refrigeration circuit in which a refrigerant circulates and for absorbing heat from the cooling water to the refrigerant at the chiller and dissipating heat from the refrigerant at the heat dissipation unit; a ratio adjusting device for adjusting a heat dissipation unit passing ratio; and a controller for controlling an heat transfer amount adjusting apparatus capable of adjusting the heat transfer amount in the refrigeration circuit and the ratio adjusting device. If it is predicted that the temperature of the cooling water decreases, the controller controls the apparatus so that the heat transfer amount is increased and controls the ratio adjusting device so that the ratio is decreased, before the temperature of the cooling water flowing through the chiller decreases.
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公开(公告)号：US20210190389A1
公开(公告)日：2021-06-24
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：US20180347526A1
公开(公告)日：2018-12-06
申请号：US15776491
申请日：2016-11-25
Applicant: DENSO CORPORATION
Inventor： Satoshi ITO , Daiji FURUHASHI , Yuuji HIDAKA , Hiromi SAKAI
CPC classification number: F02M37/10 , F02M37/22 , F02M2037/228 , F04C2/08
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：US20250137699A1
公开(公告)日：2025-05-01
申请号：US19005719
申请日：2024-12-30
Applicant: DENSO CORPORATION
Inventor： Daiki KATO , Norihiko ENOMOTO , Yuichi KAMI , Atsushi YAMADA , Satoshi ITO
IPC: F25B49/02
Abstract: A refrigeration cycle device includes a decompression unit configured to decompress a refrigerant, an evaporator configured to evaporate the refrigerant decompressed by the decompression unit, a pressure detector configured to detect an outlet-side pressure of the refrigerant at a refrigerant outlet side of the evaporator, a temperature detector configured to detect an outlet-side temperature of the refrigerant at the refrigerant outlet side of the evaporator, and a controller configured to control an operation of the decompression unit. The controller is configured to calculate a delayed outlet-side temperature by performing a delay process on the outlet-side temperature, and to control the decompression unit by using the outlet-side pressure and the delayed outlet-side temperature.
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公开(公告)号：US20210108841A1
公开(公告)日：2021-04-15
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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