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公开(公告)号：US09771954B2
公开(公告)日：2017-09-26
申请号：US14443123
申请日：2013-11-01
Applicant: DENSO CORPORATION
Inventor： Ryoko Awa , Haruyuki Nishijima , Yoshiaki Takano , Etsuhisa Yamada , Satoshi Itoh , Kenta Kayano
CPC classification number: F04F5/46 , B60H1/00921 , B60H2001/3298 , F25B41/00 , F25B2341/0011 , F25B2341/0015
Abstract: A mixing portion that mixes an injection refrigerant and a suction refrigerant is formed in a range of an internal space of a heating-side body portion of a heating-side ejector from a refrigerant injection port of a heating-side nozzle portion to an inlet of a heating-side diffuser. Further, the mixing portion is formed in a shape that gradually decreases a refrigerant passage area toward a downstream side of a refrigerant flow, and a refrigerant passage area of the inlet of the heating-side diffuser is set smaller than that of the refrigerant injection port. Thus, the flow velocity of the mixed refrigerant is decelerated to a value lower than a two phase sound velocity within the mixing portion, thereby suppressing occurrence of shock wave in the heating-side diffuser and stabilizing the pressure increasing performance in the heating-side diffuser.
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公开(公告)号：US09523521B2
公开(公告)日：2016-12-20
申请号：US14443125
申请日：2013-11-01
Applicant: DENSO CORPORATION
Inventor： Ryoko Awa , Haruyuki Nishijima , Yoshiaki Takano , Etsuhisa Yamada , Satoshi Itoh , Kenta Kayano
CPC classification number: F25B29/003 , B60H1/00921 , B60H2001/3298 , F25B41/00 , F25B2341/0011 , F25B2341/0015
Abstract: In a dehumidification-air heating mode, a refrigerant circuit is configured such that a refrigerant outlet side of an exterior heat exchanger communicates with a heating side refrigerant suction port of a heating side ejector as a refrigerant decompression means, and that a refrigerant inlet side of an interior evaporator communicates with an outlet side of a heating side diffuser of the heating side ejector. A refrigerant evaporation temperature in the exterior heat exchanger is set lower than that of the interior evaporator by a pressurizing effect of the heating side ejector. Thus, the amount of heat absorption by the refrigerant at the exterior heat exchanger is increased to improve the heating capacity of the air in an interior condenser.
Abstract translation: 在除湿空气加热模式中，制冷剂回路被构造成使得外部热交换器的制冷剂出口侧与作为制冷剂减压装置的加热侧喷射器的加热侧制冷剂吸入口连通，制冷剂入口侧 内部蒸发器与加热侧喷射器的加热侧扩散器的出口侧连通。 通过加热侧喷射器的加压效应，将外部热交换器的制冷剂蒸发温度设定为低于内部蒸发器的制冷剂蒸发温度。 因此，外部热交换器中的制冷剂的吸热量增加，以提高内部冷凝器中的空气的加热能力。
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Patent Agency Ranking
公开(公告)号：US09494355B2
公开(公告)日：2016-11-15
申请号：US14622967
申请日：2015-02-16
Applicant: DENSO CORPORATION
Inventor： Satoshi Itoh , Atsushi Inaba , Mikiharu Kuwahara
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.
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公开(公告)号：US20150300706A1
公开(公告)日：2015-10-22
申请号：US14443125
申请日：2013-11-01
Applicant: DENSO CORPORATION
Inventor： Ryoko Awa , Haruyuki Nishijima , Yoshiaki Takano , Etsuhisa Yamada , Satoshi Itoh , Kenta Kayano
IPC: F25B29/00
CPC classification number: F25B29/003 , B60H1/00921 , B60H2001/3298 , F25B41/00 , F25B2341/0011 , F25B2341/0015
Abstract: In a dehumidification-air heating mode, a refrigerant circuit is configured such that a refrigerant outlet side of an exterior heat exchanger communicates with a heating side refrigerant suction port of a heating side ejector as a refrigerant decompression means, and that a refrigerant inlet side of an interior evaporator communicates with an outlet side of a heating side diffuser of the heating side ejector. A refrigerant evaporation temperature in the exterior heat exchanger is set lower than that of the interior evaporator by a pressurizing effect of the heating side ejector. Thus, the amount of heat absorption by the refrigerant at the exterior heat exchanger is increased to improve the heating capacity of the air in an interior condenser.
Abstract translation: 在除湿空气加热模式中，制冷剂回路被构造成使得外部热交换器的制冷剂出口侧与作为制冷剂减压装置的加热侧喷射器的加热侧制冷剂吸入口连通，制冷剂入口侧 内部蒸发器与加热侧喷射器的加热侧扩散器的出口侧连通。 通过加热侧喷射器的加压效应，将外部热交换器的制冷剂蒸发温度设定为低于内部蒸发器的制冷剂蒸发温度。 因此，外部热交换器中的制冷剂的吸热量增加，以提高内部冷凝器中的空气的加热能力。
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公开(公告)号：US10596877B2
公开(公告)日：2020-03-24
申请号：US15569228
申请日：2016-04-19
Applicant: DENSO CORPORATION
Inventor： Takashi Danjyo , Takayuki Oota , Satoshi Itoh
Abstract: An air conditioning device for a vehicle has a compressor, an evaporator, a driving condition detector, a temperature detector, and a controller. The driving condition detector detects a driving condition of the vehicle. The evaporator has a cold storage portion storing the heat from the refrigerant and having phase-change energy in at least two different temperature ranges. The controller (i) maintains the compressor being stopped while a temperature detected by the temperature detector is lower than or equal to the first temperature when the vehicle is in a coasting operation and (ii) maintains the compressor being stopped while the temperature is lower than or equal to the second temperature when the vehicle is stopped. The coasting operation is a driving condition in which a vehicle speed is lower than or equal to a specified speed and an acceleration device of the vehicle is not operated.
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公开(公告)号：US10406889B2
公开(公告)日：2019-09-10
申请号：US15038484
申请日：2014-10-30
Applicant: DENSO CORPORATION
Inventor： Kota Sakamoto , Satoshi Itoh
Abstract: A heater core for exchanging heat between a coolant and ventilation air to be blown into a vehicle interior is disposed in a high-pressure side heat-medium circulation circuit that allows for circulation of the coolant heated by a heat pump cycle. A radiator for exchanging heat between at least a part of the coolant flowing out of the heater core and a low-pressure refrigerant in the heat pump cycle is disposed in a low-pressure side heat-medium circulation circuit coupled to the high-pressure side heat-medium circulation circuit. Thus, excessive heat included in the coolant flowing out of the heater core and which is not used to heat the ventilation air can suppress frost formation on an exterior heat exchanger and can also defrost the exterior heat exchanger.
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公开(公告)号：US10391839B2
公开(公告)日：2019-08-27
申请号：US15749130
申请日：2016-07-20
Applicant: DENSO CORPORATION
Inventor： Masaaki Kawakubo , Tetsuya Itou , Satoshi Itoh
IPC: B60H1/32 , B60H1/00 , F16K11/04 , F25B29/00 , F25B41/04 , B60H1/22 , F16K11/044 , F16K11/048 , F16K11/16 , F25B6/04 , F25B43/00
Abstract: A refrigeration cycle device includes a pre-evaporator decompression unit that decompresses refrigerant which flowed out from an exterior heat exchanger, and an evaporator passage that guides the refrigerant which flowed out from the exterior heat exchanger to a suction port of a compressor while passing through a pre-evaporator decompression unit and an evaporator. Further, the refrigeration cycle device includes a bypass passage that guides the refrigerant which flowed out from the exterior heat exchanger to the suction port of the compressor while bypassing the pre-evaporator decompression unit and the evaporator, a pre-exterior device switching unit, and a passage switching unit that opens and closes the bypass passage. Further, the pre-exterior device switching unit and the passage switching unit form a coupled valve where the pre-exterior device switching unit and the passage switching unit are mechanically coupled.
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