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公开(公告)号：US10144268B2
公开(公告)日：2018-12-04
申请号：US15574181
申请日：2016-05-19
Applicant: DENSO CORPORATION
Inventor： Naoya Makimoto , Masaaki Kawakubo , Takayuki Watanabe , Masatsugu Yonekura
Abstract: An air conditioning device for a vehicle includes a door control unit that controls multiple blowing port doors or an air mix door to prevent a heat generated from a heater core from leaking out of an air conditioning case before air conditioning of a vehicle interior is determined to be started. The air conditioning device includes an air conditioning control unit that performs the air conditioning of the vehicle interior by controlling the multiple blowing port doors to open at least one of multiple blowing ports and blow out a heat in the air conditioning case as hot air to the vehicle interior from the at least one blowing port after the air conditioning in the vehicle interior is determined to be started.
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公开(公告)号：US20240424864A1
公开(公告)日：2024-12-26
申请号：US18829542
申请日：2024-09-10
Applicant: DENSO CORPORATION
Inventor： Yukihisa IJUIN , Toru Okamura , Naoya Makimoto , Yoshio Hayashi , Yoshiki Kato , Hiroaki Kawano , Yasuhiro Yokoo , Junki Hirayama , Naito Muto , Kohei Noguchi
Abstract: A first refrigeration cycle includes a first compressor, a first radiator, an air-conditioning expansion valve, an air-conditioning evaporator, a first expansion valve, and a first evaporator. In the first refrigeration cycle, a first refrigerant evaporates in at least one of the air-conditioning evaporator or the first evaporator. A second refrigeration cycle includes a second compressor, a second radiator, a second expansion valve, and a second evaporator. A heat transfer portion switches a heat radiation destination from the first radiator to a second refrigerant in the second evaporator or outside air. In the air-conditioning evaporator, the first refrigerant absorbs heat from ventilation air blown into a space to be air conditioned as the first refrigerant evaporates. In the first evaporator, the first refrigerant absorbs heat from the outside air as the first refrigerant evaporates. In the second radiator, the second radiator radiates heat from the second refrigerant to the ventilation air.
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公开(公告)号：US12140353B2
公开(公告)日：2024-11-12
申请号：US17576030
申请日：2022-01-14
Applicant: DENSO CORPORATION
Inventor： Kouji Inagaki , Daiki Katou , Hiroaki Kawano , Yoshiki Katoh , Naoya Makimoto
Abstract: A refrigeration cycle device includes a compressor configured to compress and discharge a refrigerant containing oil, a refrigerant radiator configured to heat the ventilation air using the refrigerant discharged from the compressor as a heat source during a room interior heating, a refrigerant decompression unit configured to decompress the refrigerant having passed through the refrigerant radiator, an evaporator configured to evaporate the refrigerant and to function as a heat absorber during the room interior heating; and a controller configured to control the refrigerant decompression unit and to perform a fluctuation operation at least during the room interior heating. In the fluctuation operation, a throttle opening degree of the refrigerant decompression unit is changed such that a refrigerant state on a refrigerant outlet side of the evaporator is alternately changed to a superheated state having a superheat degree and a wet state containing the wet vapor.
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公开(公告)号：US12049122B2
公开(公告)日：2024-07-30
申请号：US17484538
申请日：2021-09-24
Applicant: DENSO CORPORATION
Inventor： Koji Miura , Hiroaki Kawano , Motohiro Yamaguchi , Kazuya Taniguchi , Yoshiki Kato , Masamichi Makihara , Takahiro Maeda , Kuniyoshi Tanioka , Toru Okamura , Naoya Makimoto
CPC classification number: B60H1/00899 , B60H1/32284 , F25B1/00 , F25B5/02 , B60H1/00278 , B60H2001/00928 , B60H2001/00942
Abstract: A refrigeration cycle device includes a heat pump cycle, a high-temperature heat medium circuit, and a low-temperature heat medium circuit. The low-temperature heat medium circuit includes a plurality of heat absorption devices configured to have a heat absorption amount to be absorbed by the low-temperature heat medium flowing out of a low-temperature heat medium-refrigerant heat exchanger, and a heat absorption adjusting unit configured to change the heat absorption amount of the low-temperature heat medium in the respective heat absorption devices. In the refrigeration cycle device, a flow amount of the refrigerant flowing into the low-temperature heat medium-refrigerant heat exchanger is reduced when the heat absorption adjusting unit changes the heat absorption amount of the low-temperature heat medium in the respective heat absorption devices, and the flow amount of the refrigerant flowing into the low-temperature heat medium-refrigerant heat exchanger is increased when a recovery condition is satisfied.
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公开(公告)号：US10899198B2
公开(公告)日：2021-01-26
申请号：US15307849
申请日：2015-04-27
Applicant: DENSO CORPORATION
Inventor： Michio Nishikawa , Atsushi Inaba , Hiroaki Kawano , Naoya Makimoto
Abstract: A heater core for performing heat exchange between a coolant and ventilation air to be blown to the interior of a vehicle so as to heat the ventilation air is disposed in a water circulation circuit for circulating a coolant in an engine EG for outputting driving force necessary to move the vehicle. When the temperature of the coolant discharged from the engine EG is low, a heat transport refrigeration cycle device, serving as a heat transport unit for absorbing heat from a downstream coolant at a position downstream more than the heater core and dissipating the heat absorbed from the downstream coolant to an upstream coolant at a position upstream more than the heater core, is operated to increase the temperature of the coolant introduced into the heater core until the temperature of the coolant reaches the temperature necessary to heat the interior of the vehicle, without operation of the engine EG.
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Patent Agency Ranking
公开(公告)号：US20170050493A1
公开(公告)日：2017-02-23
申请号：US15307849
申请日：2015-04-27
Applicant: DENSO CORPORATION
Inventor： Michio Nishikawa , Atsushi Inaba , Hiroaki Kawano , Naoya Makimoto
CPC classification number: B60H1/03 , B60H1/00342 , B60H1/00478 , B60H1/00835 , B60H1/00899 , B60H1/034 , B60H1/3204 , B60H1/323 , B60H2001/00928
Abstract: A heater core for performing heat exchange between a coolant and ventilation air to be blown to the interior of a vehicle so as to heat the ventilation air is disposed in a water circulation circuit for circulating a coolant in an engine EG for outputting driving force necessary to move the vehicle. When the temperature of the coolant discharged from the engine EG is low, a heat transport refrigeration cycle device, serving as a heat transport unit for absorbing heat from a downstream coolant at a position downstream more than the heater core and dissipating the heat absorbed from the downstream coolant to an upstream coolant at a position upstream more than the heater core, is operated to increase the temperature of the coolant introduced into the heater core until the temperature of the coolant reaches the temperature necessary to heat the interior of the vehicle, without operation of the engine EG.
Abstract translation: 在用于在发动机EG中循环冷却剂的水循环回路中设置用于在冷却剂和被吹送到车辆内部的通风空气之间进行热交换以加热通风空气的加热器芯，用于输出必要的驱动力 移动车辆 当从发动机EG排出的冷却剂的温度低时，作为热输送单元，其作为热传递单元，用于在下游侧的加热器芯下游的位置吸收来自下游冷却剂的热量，并且散发从 操作下游冷却剂到在加热器芯上游的位置处的上游冷却剂，以增加引入加热器芯的冷却剂的温度，直到冷却剂的温度达到加热车辆内部所需的温度，而不需要操作 的发动机EG。
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公开(公告)号：US12202318B2
公开(公告)日：2025-01-21
申请号：US17974682
申请日：2022-10-27
Applicant: DENSO CORPORATION
Inventor： Kouji Miura , Yoshiki Katoh , Masamichi Makihara , Atsushi Yamada , Kenta Kayano , Hiroaki Kawano , Tooru Okamura , Naoya Makimoto
Abstract: An air conditioner for a vehicle includes a refrigeration cycle, a heating unit and a control unit. The refrigeration cycle includes an air-conditioning evaporator, a chilling evaporator, an air-conditioning side flow path, a detour flow path and an air-conditioning flow rate adjustment unit. The control unit includes a determination unit that determines whether a condensation condition is satisfied when a refrigerant is flowing through the chilling evaporator via the detour flow path in a state where an inflow of a refrigerant into the air-conditioning evaporator is prohibited. When the determination unit determines that the condensation condition is satisfied, the control unit controls the air-conditioning flow rate adjustment unit to allow an inflow of a refrigerant into the air-conditioning evaporator as a condensation suppression operation for suppressing condensation of a refrigerant in the air-conditioning evaporator.
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公开(公告)号：US11897316B2
公开(公告)日：2024-02-13
申请号：US17343279
申请日：2021-06-09
Applicant: DENSO CORPORATION
Inventor： Naoya Makimoto , Yoshiki Kato
CPC classification number: B60H1/22 , B60H1/3204
Abstract: A refrigeration cycle device includes a high-temperature heating medium regulator and a controller. The high-temperature heating medium regulator regulates a high-temperature heating medium flow ratio between the flow rate of high-temperature heating medium flowing in an air heater and the flow rate of high-temperature heating medium flowing in a radiator. The controller controls the high-temperature heating medium regulator to regulate the high-temperature heating medium flow ratio such that excess heat is radiated to air outside the cabin by the radiator, of the heat radiated from the refrigerant to the high-temperature heating medium by a high-pressure-side heat exchanger, with respect to heat required for heating air blown into a cabin by the air heater to have a target outlet temperature.
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公开(公告)号：US11833887B2
公开(公告)日：2023-12-05
申请号：US17354591
申请日：2021-06-22
Applicant: DENSO CORPORATION
Inventor： Hiroaki Kawano , Yoshiki Kato , Masamichi Makihara , Takahiro Maeda , Kuniyoshi Tanioka , Toru Okamura , Naoya Makimoto
CPC classification number: B60H1/034 , B60H1/323 , B60H1/3227
Abstract: A vehicular air conditioner includes a refrigeration cycle system, a high-temperature heat medium circuit, and a low-temperature heat medium circuit. The high-temperature heat medium circuit includes an air-heat medium heat exchanger, a heater core, a branching portion, a common passage, a flow rate adjuster, and an auxiliary heat source. The air-heat medium heat exchanger exchanges heat between the heat medium and an outside air. The heater core is arranged parallel to the air-heat medium heat exchanger and causes the heat medium to transfer heat to a ventilation air. The branching portion divides a flow of the heat medium into a flow toward the air-heat medium heat exchanger and a flow toward the heater core. The auxiliary heat source is arranged in the common passage at a position upstream of the branching portion.
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公开(公告)号：US11787258B2
公开(公告)日：2023-10-17
申请号：US16799467
申请日：2020-02-24
Applicant: DENSO CORPORATION
Inventor： Naoya Makimoto , Yoshiki Kato
CPC classification number: B60H1/00007 , B60H1/00885 , B60H1/3227 , B60H1/32281 , B60H2001/00928 , B60H2001/00949 , B60H2001/325 , B60H2001/3263 , B60H2001/3283
Abstract: In a refrigeration cycle device, in an operation mode in which a refrigerant does not flows into a cooling evaporator, a throttle opening degree characteristic of a heat absorption valve disposed upstream of a heat absorption evaporator is set to cause the refrigerant on the outlet side of the heat absorption evaporator to be in a gas-liquid two-phase state.
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