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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：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：US20200232726A1
公开(公告)日：2020-07-23
申请号：US16841260
申请日：2020-04-06
Applicant: DENSO CORPORATION
Inventor： Ryohei SUGIMURA , Masaaki KAWAKUBO , Daiki KATO , Tetsuya ITO , Hiroshi MIEDA
Abstract: A heat exchanger has an inflow port through which refrigerant flows, a cooling outflow port through which the refrigerant flows out during a cooling operation, and a heating outflow port through which the refrigerant flows out during a heating operation. A distance between the inflow port and the heating outflow port is shorter than a distance between the inflow port and the cooling outflow port.
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公开(公告)号：US20190128577A1
公开(公告)日：2019-05-02
申请号：US16091138
申请日：2017-04-03
Applicant: DENSO CORPORATION
Inventor： Ryohei SUGIMURA , Masaaki KAWAKUBO , Daiki KATO , Hiroshi MIEDA , Tetsuya ITO
Abstract: A heat exchanger includes a heat exchanging portion, a reservoir that performs gas-liquid separation on a gas-liquid two-phase refrigerant that flows out from the heat exchanging portion into a gas-phase refrigerant and a liquid-phase refrigerant and stores the liquid-phase refrigerant, and an inflow passage that allows the gas-liquid two-phase refrigerant flowing out from the heat exchanging portion to flow into the reservoir. The inflow passage is connected so as to be in communication with an inlet port of the reservoir which is disposed above a liquid surface of the liquid-phase refrigerant stored in the reservoir.
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公开(公告)号：US20190128575A1
公开(公告)日：2019-05-02
申请号：US16091944
申请日：2017-04-03
Applicant: DENSO CORPORATION
Inventor： Ryohei SUGIMURA , Hiroshi MIEDA , Masaaki KAWAKUBO , Daiki KATO , Tetsuya ITO
Abstract: A heat exchanger includes: a heat exchanging portion configured to exchange heat between a refrigerant flowing through therein and air; a liquid reservoir configured to separate a gas-liquid two-phase refrigerant flowing out of the heat exchanging portion into a gas-phase refrigerant and a liquid-phase refrigerant, the liquid reservoir storing the liquid-phase refrigerant; and a refrigerant adjustment portion configured to adjust a flow state of the refrigerant flowing into the refrigerant adjustment portion through a refrigerant passage of the refrigeration cycle, supply the refrigerant to the heat exchanging portion and adjust an outflow state and an outflow destination of the refrigerant flowing out of the heat exchanging portion or the liquid reservoir. At least a part of the refrigerant adjustment portion is inserted into the liquid reservoir.
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Patent Agency Ranking
公开(公告)号：US20190092135A1
公开(公告)日：2019-03-28
申请号：US16091917
申请日：2017-04-03
Applicant: DENSO CORPORATION
Inventor： Ryohei SUGIMURA , Hiroshi MIEDA , Masaaki KAWAKUBO , Daiki KATO , Tetsuya ITO
IPC: B60H1/32
Abstract: A heat exchanger includes a liquid reservoir configured to separate a gas-liquid two-phase refrigerant flowing out of an upstream heat exchanging portion into a gas-phase refrigerant and a liquid-phase refrigerant and store the liquid-phase refrigerant, and a first adjustment portion and a second adjustment portion configured to adjust an outflow state and an outflow destination of the refrigerant flowing out of a downstream heat exchanging portion or the liquid reservoir. The liquid reservoir includes a liquid reserving portion configured to store the liquid-phase refrigerant, and a gas reserving portion configured to store the gas-phase refrigerant. The first adjustment portion and the second adjustment portion face the liquid reserving portion across the gas reserving portion.
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公开(公告)号：US20200156444A1
公开(公告)日：2020-05-21
申请号：US16774469
申请日：2020-01-28
Applicant: DENSO CORPORATION
Inventor： Tetsuya ITO , Masaaki KAWAKUBO , Daiki KATO , Ryohei SUGIMURA , Yasuhiro KAWASE
Abstract: An integrated valve includes a body portion, a flow rate adjustment valve body, a flow passage switching valve body, and a shaft member. The body portion has formed therein a plurality of passages. The flow rate adjustment valve body is provided inside the body portion that adjusts a flow rate of fluid. The flow passage switching valve body is provided inside the body portion configured to switch a flow path of the predetermined fluid in the fluid circulation circuit, the flow passage switching valve body being switchable between distinct communication states. The shaft member is provided inside the body portion that interlocks the flow rate adjustment valve body and the flow passage switching valve body.
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公开(公告)号：US20240369265A1
公开(公告)日：2024-11-07
申请号：US18773926
申请日：2024-07-16
Applicant: DENSO CORPORATION
Inventor： Daiki KATO , Norihiko ENOMOTO , Yuichi KAMI
Abstract: A refrigeration cycle device includes first and second evaporation units connected in parallel to a flow of a refrigerant, and an accumulator. When a path of an energy flow in which heat of a first object to be cooled moves to a suction refrigerant drawn into a compressor is defined as a first path, and when a path of an energy flow in which heat of a second object to be cooled moves to the suction refrigerant is defined as a second path, the accumulator is disposed in at least one of the first path and the second path. Furthermore, the refrigeration cycle device is provided with a first switching unit switched such that heat of the first object to be cooled is moved while bypassing the accumulator, and a second switching unit switched such that heat of the second object to be cooled is moved while bypassing the accumulator.
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公开(公告)号：US20210063067A1
公开(公告)日：2021-03-04
申请号：US17098487
申请日：2020-11-16
Applicant: DENSO CORPORATION
Inventor： Ryohei SUGIMURA , Masaaki KAWAKUBO , Daiki KATO , Hiroshi MIEDA , Tetsuya ITO
Abstract: A heat exchanger includes a heat exchanging portion, a reservoir that performs gas-liquid separation on a gas-liquid two-phase refrigerant that flows out from the heat exchanging portion into a gas-phase refrigerant and a liquid-phase refrigerant and stores the liquid-phase refrigerant, and an inflow passage that allows the gas-liquid two-phase refrigerant flowing out from the heat exchanging portion to flow into the reservoir. The inflow passage is connected so as to be in communication with an inlet port of the reservoir which is disposed above a liquid surface of the liquid-phase refrigerant stored in the reservoir.
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公开(公告)号：US20200158382A1
公开(公告)日：2020-05-21
申请号：US16774250
申请日：2020-01-28
Applicant: DENSO CORPORATION
Inventor： Daiki KATO , Masaaki KAWAKUBO , Tetsuya ITO , Yasuhiro KAWASE , Ryohei SUGIMURA , Hiroshi MIEDA
Abstract: In a heat pump cycle device, a flow passage switching portion includes a flow passage switching valve body configured to open and close a cooling side flow passage. A refrigerant circulation circuit includes a low-pressure flow passage through which a low-pressure refrigerant decompressed by a first decompressor flows toward a compressor in a heating mode, and a pre-evaporator flow passage provided between the flow passage switching valve body and a refrigerant inlet of an evaporator. The flow passage switching portion causes a pre-evaporator flow passage to communicate with the low-pressure flow passage while bypassing the evaporator when a refrigerant pressure in the low-pressure flow passage is lower than a refrigerant pressure in the pre-evaporator flow passage, in the heating mode.
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