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公开(公告)号：US11384988B2
公开(公告)日：2022-07-12
申请号：US16708168
申请日：2019-12-09
Applicant: DENSO CORPORATION
Inventor： Hiroshi Mieda , Junji Kato , Hironobu Fujiyoshi
Abstract: Each of tanks of a heat exchanger includes a tube joint portion and a tank body portion which define an internal space of the tank. The tube joint portions of the tanks constitute a single core plate. The tank body portions each have a claw protruding toward a core portion. The core plate is provided with a hole that fits with the claw. In a state in which the claw is fitted into the hole, the tank body portions are fixed to the core plate.
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公开(公告)号：US11656014B2
公开(公告)日：2023-05-23
申请号：US17098487
申请日：2020-11-16
Applicant: DENSO CORPORATION
Inventor： Ryohei Sugimura , Masaaki Kawakubo , Daiki Kato , Hiroshi Mieda , Tetsuya Ito
CPC classification number: F25B43/006 , F25B5/04 , F25B6/04 , F25B39/00 , F25B40/00 , F25B39/04 , F25B2339/047 , F25B2400/16 , F25B2400/23
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：US12215900B2
公开(公告)日：2025-02-04
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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Patent Agency Ranking
公开(公告)号：US11143443B2
公开(公告)日：2021-10-12
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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公开(公告)号：US12169103B2
公开(公告)日：2024-12-17
申请号：US17965095
申请日：2022-10-13
Applicant: DENSO CORPORATION
Inventor： Ryohei Sugimura , Hiroshi Mieda
Abstract: The heat exchanger includes a first heat-exchange portion and a second heat-exchange portion. The first heat-exchange portion includes a first header tank having an inflow portion through which the heat medium flows into the first heat-exchange portion. The second heat-exchange portion includes a second header tank having an outflow portion through which the heat medium flows out of the second heat-exchange portion. The first header tank and the second header tank are connected to each other via a connecting portion. The connecting portion has a slit passing through the connecting portion.
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公开(公告)号：US11179999B2
公开(公告)日：2021-11-23
申请号：US15749514
申请日：2016-07-12
Applicant: DENSO CORPORATION
Inventor： Hiroshi Mieda , Ryohei Sugimura , Masaaki Kawakubo , Yuichi Kami
IPC: B60H1/00 , F25B43/00 , F25B25/00 , F25B6/02 , F25B41/20 , F25B1/10 , F25B39/04 , B60H1/22 , F25B13/00 , F25B40/00
Abstract: A heat pump system includes a compressor that compresses and discharges a refrigerant, a decompressor that decompresses the refrigerant, an outdoor unit that exchanges heat between the refrigerant and an outside air, an evaporator that evaporates the refrigerant, a condenser that condenses the refrigerant, an internal heat exchanger, an accumulator that separates the refrigerant into a gas refrigerant and a liquid refrigerant, and a flow pathway changing portion. The internal heat exchanger includes a high-pressure passage through which a high-pressure refrigerant flows, and a low-pressure passage through which a low-pressure refrigerant flows, the internal heat exchanger exchanging heat between the refrigerant flowing through the high-pressure passage and the refrigerant flowing through the low-pressure passage. The flow pathway changing portion that switches between a cooling pathway and a heating pathway. According to this heat pump system, a cooling capacity and a heating capacity can be improved.
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公开(公告)号：US11231210B2
公开(公告)日：2022-01-25
申请号：US16307108
申请日：2017-03-23
Applicant: DENSO CORPORATION
Inventor： Yasuhiro Mizuno , Isao Tamada , Hiroshi Mieda , Ryohei Sugimura
Abstract: A stack type heat exchanger includes a plurality of first plates and a plurality of second plates. At least one of the respective first plates and the respective second plates has a protrusion protruding from a main body of the first plate or the second plate toward a first flow path, the protrusion being located at a peripheral portion of a tank space in the first flow path. The first plate and the second plate are joined to each other through the protrusion. The protrusion has a top portion and a side wall portion. A part of the side wall portion adjacent to the tank space has a thick structure portion, an entire thickness of the thick structure portion being thick in a direction perpendicular to the stacking direction.
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公开(公告)号：US10759258B2
公开(公告)日：2020-09-01
申请号：US16307272
申请日：2017-04-27
Applicant: DENSO CORPORATION
Inventor： Hiroshi Oshitani , Hiroshi Mieda
Abstract: An ejector refrigeration cycle device includes: a decompressor that decompresses a refrigerant heat-exchanged in a radiator; a first exterior heat exchanger that exchanges heat between the refrigerant decompressed by the decompressor and outside air; an ejector that decompresses the refrigerant flowing out of the radiator in a nozzle portion and draws another refrigerant heat-exchanged in the first exterior heat exchanger; a branch portion in which the refrigerant heat-exchanged in the radiator branches to a side of the decompressor and a side of the nozzle portion; a second exterior heat exchanger that exchanges heat between the refrigerant pressurized in the ejector and the outside air; a bypass portion that causes the refrigerant heat-exchanged in the radiator to flow to the first exterior heat exchanger while bypassing the decompressor and the nozzle portion; and an opening/closing portion that opens or closes the bypass portion.
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