公开(公告)号：US20230091458A1

公开(公告)日：2023-03-23

申请号：US18070060

申请日：2022-11-28

Applicant: DENSO CORPORATION

Inventor： Satoshi SUZUKI ,  Satoshi ITOH ,  Takuya MITSUHASHI ,  Atsushi YAMADA

IPC: B60H1/00 ,  B60H1/32 ,  B60K11/04

Abstract: A refrigeration cycle device includes: a compressor; a heat radiating unit that causes refrigerant to heat air supplied to a space inside a vehicle cabin; a decompression unit that decompresses the refrigerant; an outside air heat absorbing unit that causes the refrigerant to absorb heat from outside air; a waste heat absorbing unit that causes the refrigerant to absorb waste heat of a waste heat device; a shutter that opens and closes a passage for the outside air introduced into the outside air heat absorbing unit; and a control unit that closes the shutter when it is determined that an amount of waste heat of the waste heat device is larger than an amount of heat absorbed by the refrigerant in the outside air heat absorbing unit and the waste heat absorbing unit.

公开(公告)号：US20160297283A1

公开(公告)日：2016-10-13

申请号：US15038484

申请日：2014-10-30

Applicant: DENSO CORPORATION

Inventor： Kota SAKAMOTO ,  Satoshi ITOH

IPC: B60H1/00 ,  F25B49/02

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.

Abstract translation: 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的加热器芯设置在允许通过热泵循环加热的冷却剂的循环的高压侧热介质循环回路中。 在从加热器芯流出的至少一部分冷却剂与热泵循环中的低压制冷剂之间进行热交换的散热器设置在与高压侧连接的低压侧热介质循环回路中 热介质循环回路。 因此，流出加热器芯的冷却剂中所含的过多的热量不能用于加热通风空气，可以抑制外部热交换器的结霜，并且还可以对外部热交换器进行除霜。

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。

公开(公告)号：US20180201094A1

公开(公告)日：2018-07-19

申请号：US15743331

申请日：2016-06-29

Applicant: DENSO CORPORATION

Inventor： Hiroaki KAWANO ,  Satoshi ITOH

IPC: B60H1/00 ,  F25B13/00 ,  F25B41/06 ,  F25B43/00

CPC classification number: B60H1/00907 ,  B60H1/00921 ,  B60H1/3213 ,  B60H1/3223 ,  B60H2001/00092 ,  B60H2001/00935 ,  B60H2001/3251 ,  F25B1/10 ,  F25B13/00 ,  F25B25/005 ,  F25B41/043 ,  F25B41/062 ,  F25B43/006 ,  F25B2313/02741 ,  F25B2313/0316 ,  F25B2600/022 ,  F25B2700/21162 ,  F25B2700/21172

Abstract: A heat pump cycle includes a first usage side heat exchanger that heats a target fluid via heat exchange with refrigerant discharged from a compressor. The refrigerant flowing out of the first usage side heat exchanger is reduced in pressure by a first pressure reducing unit, and then separated into gas and liquid by a gas-liquid separation unit. The separated gas-phase refrigerant flows toward an intermediate-pressure port of the compressor. The separated liquid-phase refrigerant is reduced in pressure by a second pressure reducing unit. An additional heat exchanger performs heat exchange between the refrigerant flowing from the second pressure reducing unit and a heat medium, and allows the refrigerant to flow toward an intake port of the compressor. A second usage side heat exchanger performs heat exchange between the separated liquid-phase refrigerant and a counterpart fluid, and allows the refrigerant to flow toward the second pressure reducing unit.

公开(公告)号：US20180312041A1

公开(公告)日：2018-11-01

申请号：US15569228

申请日：2016-04-19

Applicant: DENSO CORPORATION

Inventor： Takashi DANJYO ,  Takayuki OOTA ,  Satoshi ITOH

IPC: B60H1/32 ,  B60H1/00 ,  F28D1/053 ,  F28D20/02

CPC classification number: B60H1/3208 ,  B60H1/005 ,  B60H2001/3261 ,  B60H2001/3266 ,  B60H2001/3273 ,  C09K5/063 ,  F28D1/05383 ,  F28D20/02 ,  F28D20/026 ,  F28D2020/0013 ,  F28D2021/0085 ,  Y02E60/145

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.

公开(公告)号：US20220234416A1

公开(公告)日：2022-07-28

申请号：US17718808

申请日：2022-04-12

Applicant: DENSO CORPORATION

Inventor： Satoshi SUZUKI ,  Satoshi ITOH ,  Kengo SUGIMURA

IPC: B60H1/00

Abstract: A refrigeration cycle device includes a refrigeration cycle, an outdoor heat exchanger, a cooling necessity determination unit, a determination reference setting unit, and a cooling control unit. The cooling necessity determination unit determines whether or not to cool a battery depending on whether or not a physical quantity that correlates with a temperature of the battery is equal to or more than a predetermined reference physical quantity. The determination reference setting unit sets the reference physical quantity for the cooling necessity determination unit according to the outdoor heat exchanger functioning as a heat absorber or radiator. When the outdoor heat exchanger functions as heat absorber, the determination reference setting unit sets a second reference physical quantity smaller than a first reference physical quantity set when the outdoor heat exchanger functions as radiator.

公开(公告)号：US20180222289A1

公开(公告)日：2018-08-09

申请号：US15749130

申请日：2016-07-20

Applicant: DENSO CORPORATION

Inventor： Masaaki KAWAKUBO ,  Tetsuya ITOU ,  Satoshi ITOH

IPC: B60H1/32 ,  B60H1/22 ,  B60H1/00 ,  F16K11/044 ,  F16K11/048

CPC classification number: B60H1/3223 ,  B60H1/00335 ,  B60H1/00485 ,  B60H1/00885 ,  B60H1/00921 ,  B60H1/2218 ,  B60H1/3213 ,  F16K11/04 ,  F16K11/044 ,  F16K11/048 ,  F16K11/163 ,  F25B6/04 ,  F25B29/003 ,  F25B41/04 ,  F25B43/006 ,  F25B2313/02731 ,  F25B2339/047

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.

公开(公告)号：US20150308462A1

公开(公告)日：2015-10-29

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

IPC: F04F5/46

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.

Abstract translation: 混合喷射制冷剂和吸入制冷剂的混合部分在加热侧喷射器的加热侧主体部分的内部空间从加热侧喷嘴部分的制冷剂喷射口的入口到 加热侧扩散器。 此外，混合部形成为朝向制冷剂流的下游侧逐渐减小制冷剂通过面积的形状，并且将加热侧扩散器的入口的制冷剂通路面积设定为小于制冷剂喷射口的制冷剂通路面积 。 因此，混合制冷剂的流速被减速到低于混合部分内的两相声速的值，从而抑制加热侧扩散器中的冲击波的发生，并稳定加热侧扩散器中的增压性能 。