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公开(公告)号：US20220357086A1
公开(公告)日：2022-11-10
申请号：US17869718
申请日：2022-07-20
Applicant: DENSO CORPORATION
Inventor： Masafumi NAKASHIMA , Atsushi INABA , Mikiharu KUWAHARA , Yuuichi KAMI , Hiroshi MIEDA
Abstract: A refrigeration cycle device includes: a compressor having a compression mechanism forming a compression chamber for compressing refrigerant, and a cooled portion cooled by the refrigerant before being compressed by the compression mechanism; a radiator that radiates the refrigerant compressed by the compressor; a decompressor that decompresses the refrigerant radiated by the radiator; an evaporator that evaporates the refrigerant decompressed by the decompressor; an acquisition unit that acquires the state of the refrigerant after cooling the cooled portion and before flowing into the compression chamber; and a control unit that controls the superheat degree of the refrigerant flowing into the compression chamber based on the state of the refrigerant acquired by the acquisition unit.
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公开(公告)号：US20220275982A1
公开(公告)日：2022-09-01
申请号：US17749258
申请日：2022-05-20
Applicant: DENSO CORPORATION
Inventor： Hiroshi MIEDA , Atsushi INABA , Yuuichi KAMI , Mikiharu KUWAHARA , Masafumi NAKASHIMA
Abstract: A refrigeration cycle device includes a compressor, an upstream branch portion, a heating portion, a decompression portion, a bypass passage, a bypass flow adjustment portion, and a mixing portion. The mixing portion mixes a bypass side refrigerant flowing out from the bypass flow adjustment portion with a decompression-portion side refrigerant flowing out from the decompression portion, and causes the mixed refrigerant to flow to a suction port side of the compressor. The mixing portion mixes the bypass side refrigerant and the decompression-portion side refrigerant such that an enthalpy difference obtained by subtracting an enthalpy of an ideal homogeneously mixed refrigerant from an enthalpy of a suction side refrigerant actually sucked into the compressor is equal to or less than a predetermined reference value.
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公开(公告)号：US20190241044A1
公开(公告)日：2019-08-08
申请号：US16390234
申请日：2019-04-22
Applicant: DENSO CORPORATION
Inventor： Satoshi ITO , Atsushi INABA
CPC classification number: B60H1/00899 , B60H1/00021 , B60H1/00392 , B60H1/00485 , B60H1/00821 , B60H1/00885 , B60H1/00907 , B60H1/00921 , B60H1/22 , B60H1/32 , B60H2001/00935 , F25B1/00 , F25B13/00 , F25B39/00
Abstract: A refrigerant cycle provides a heat pump cycle apparatus. An outdoor heat exchanger, a control valve, and a refrigerant container are arranged in series in this order. The outdoor heat exchanger provides a passage in which a passage cross-sectional area of the refrigerant changes. When the outdoor heat exchanger is used as a condenser, the flow direction of the refrigerant is a direction in which the passage cross-sectional area becomes relatively small. When the outdoor heat exchanger is used as an evaporator, the flow direction of the refrigerant is a direction in which the passage cross-sectional area becomes relatively large. In both flow directions, the refrigerant container acts as a receiver.
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公开(公告)号：US20220402336A1
公开(公告)日：2022-12-22
申请号：US17894581
申请日：2022-08-24
Applicant: DENSO CORPORATION
Inventor： Kazuhiro TADA , Yuuichi KAMI , Zhaoliang XU , Atsushi INABA
IPC: B60H1/32
Abstract: A vehicle air conditioner includes a compressor, a heating unit, an outside air heat exchanger, a wind speed regulation unit, and a controller. The controller includes a melting control unit, a dry control unit, and a dry completion determination unit. In a dry defrosting mode, the melting control unit performs melting-defrosting to melt frost adhering to the outside air heat exchanger. The dry control unit performs a dry defrosting in which at least one of the amount of heat in a predetermined range or a wind speed regulated in a predetermined range by the wind speed regulation unit is supplied to residual water adhering to the outside air heat exchanger, due to melting of frost in the melting-defrosting, to dry the residual water. The dry completion determination unit determines whether drying of the residual water in the outside air heat exchanger is completed, in the dry defrosting.
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Patent Agency Ranking
公开(公告)号：US20220402331A1
公开(公告)日：2022-12-22
申请号：US17894426
申请日：2022-08-24
Applicant: DENSO CORPORATION , DENSO AUTOMOTIVE Deutschland GmbH
Inventor： Kazuhiro TADA , Atsushi INABA , Zhaoliang XU , Patrick HORN , Shivakumar BANAKAR , Ariel MARASIGAN
IPC: B60H1/00 , B60L58/27 , H01M10/613 , H01M10/625 , H01M10/663 , H01M10/6568 , H01M10/63
Abstract: A vehicle air-conditioning device includes a compressor, a heating unit, an outside air heat exchanger, a wind speed regulation unit, and a controller. The heating unit includes a heating heat exchanger and heats ventilation air supplied to a space to be air conditioned using a high-pressure refrigerant as a heat source. The wind speed regulation unit regulates a wind speed of air supplied to the outside air heat exchanger. The control unit performs, as a defrosting operation of defrosting the outside air heat exchanger, a dry defrosting mode for evaporating and removing frost adhering to the outside air heat exchanger in a state where the outside air is at a low temperature. In the dry defrosting mode, the controller causes the wind speed regulation unit to supply air to the outside air heat exchanger at a wind speed in a range determined to promote evaporation and removal of frost.
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公开(公告)号：US20150159933A1
公开(公告)日：2015-06-11
申请号：US14622967
申请日：2015-02-16
Applicant: DENSO CORPORATION
Inventor： Satoshi ITOH , Atsushi INABA , Mikiharu KUWAHARA
IPC: F25B49/02
CPC classification number: F25B49/022 , B60H1/00807 , B60H1/00921 , F24F3/1405 , F25B41/04 , F25B2341/066 , F25B2600/2513
Abstract: A refrigerant cycle device includes a first refrigerant passage for guiding refrigerant from a refrigerant radiator to an inlet side of an outdoor heat exchanger, a first throttle part capable of varying an opening area of the first refrigerant passage, a second refrigerant passage for guiding the refrigerant from the outdoor heat exchanger to a compressor-suction side, a first opening/closing part for opening/closing the second refrigerant passage, a third refrigerant passage for guiding the refrigerant from the outdoor heat exchanger to the compressor-suction side via an evaporator, a second throttle part capable of varying an opening area of the third refrigerant passage, a bypass passage for guiding the refrigerant flowing between the refrigerant radiator and the first throttle part to a position between the outdoor heat exchanger and the second throttle part in the third refrigerant passage, and a second opening/closing part for opening/closing the bypass passage.
Abstract translation: 制冷剂循环装置包括用于将制冷剂从制冷剂散热器引导到室外热交换器的入口侧的第一制冷剂通路，能够改变第一制冷剂通路的开口面积的第一节流部，用于引导制冷剂的第二制冷剂通路 从室外热交换器到压缩机吸入侧，用于打开/关闭第二制冷剂通路的第一开闭部，通过蒸发器将制冷剂从室外热交换器引导到压缩机吸入侧的第三制冷剂通路， 能够改变第三制冷剂通路的开口面积的第二节流部，将在制冷剂散热器与第一节流部之间流动的制冷剂引导到第三制冷剂的室外热交换器与第二节流部之间的位置的旁通通路 通道和用于打开/关闭旁路通道的第二打开/关闭部分。
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公开(公告)号：US20240219086A1
公开(公告)日：2024-07-04
申请号：US18602846
申请日：2024-03-12
Applicant: DENSO CORPORATION
Inventor： Kota TAKEICHI , Atsushi INABA , Yuichi KAMI , Kengo SUGIMURA , Daiki KATO
Abstract: A heat pump cycle device includes a compressor, a branching unit, a heating unit, a heating-unit-side depressurizing unit, a bypass passage, a bypass flow-rate adjusting unit, a mixing unit, and a target pressure difference determining unit. The target pressure difference determining unit determines a target pressure difference as a target value of a pressure difference determined by subtracting a suctioned refrigerant pressure from a discharge refrigerant pressure. An operation of at least one of the compressor, the heating-unit-side depressurizing unit, or the bypass flow-rate adjusting unit is controlled so that the pressure difference comes close to the target pressure difference.
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公开(公告)号：US20240190216A1
公开(公告)日：2024-06-13
申请号：US18441791
申请日：2024-02-14
Applicant: DENSO CORPORATION
Inventor： Hiroshi MIEDA , Atsushi INABA , Yuichi KAMI , Norihiko ENOMOTO , Masahiro ITO
IPC: B60H1/32
CPC classification number: B60H1/3223
Abstract: A compressor module for a heat pump cycle includes a compressor, a channel forming member configured to define therein a plurality of internal refrigerant channels through which refrigerant flows, and a cover member configured to define a housing space of a housing, which houses the compressor, together with the channel forming member. The housing is provided therein with a compressor-side inlet and a compressor-side outlet communicating to the internal refrigerant channels, and is provided with an outside connection port outside of the housing space and communicating to the internal refrigerant channels. The compressor has a refrigerant discharge port coupled to the compressor-side inlet, and a refrigerant suction port coupled to the compressor-side outlet. The outside connection port is connected to inflow and outflow sides of external component devices disposed outside the housing space, in component devices of the heat pump cycle.
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公开(公告)号：US20220034561A1
公开(公告)日：2022-02-03
申请号：US17501094
申请日：2021-10-14
Applicant: DENSO CORPORATION
Inventor： Yuuji SUWA , Etsuhisa YAMADA , Masao YASUNO , Daiki KATOU , Masaaki KAWAKUBO , Atsushi INABA , Yuuichi KAMI
Abstract: A refrigeration cycle device includes a refrigerant circuit switching device. The refrigerant circuit switching device is configured to switch among at least a first circuit and a second circuit. The first circuit conducts refrigerant, which is outputted from a heat releasing device, to a liquid storage and conducts the refrigerant, which is outputted from the liquid storage, to a first depressurizing device and conducts the refrigerant, which is depressurized by the first depressurizing device, to an external heat exchanger. The second circuit conducts the refrigerant, which is outputted from the external heat exchanger, to the liquid storage and conducts the refrigerant, which is outputted from the liquid storage, to a second depressurizing device and conducts the refrigerant, which is depressurized by the second depressurizing device, to an evaporating device.
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