公开(公告)号：US20200149784A1

公开(公告)日：2020-05-14

申请号：US16743804

申请日：2020-01-15

Applicant: DENSO CORPORATION

Inventor： Hiroshi MAEDA ,  Hiroshi OSHITANI ,  Yoichiro KAWAMOTO ,  Yohei NAGANO ,  Daisuke SAKURAI ,  Masahiro ITO ,  Hang YUAN

IPC: F25B1/06 ,  F25B5/02 ,  F25B40/06 ,  F25B41/04 ,  F25B9/08

Abstract: An ejector refrigeration cycle includes a compressor, a radiator, a branch portion, an ejector, a suction side decompressor, a windward evaporator, and a leeward evaporator. The ejector includes a nozzle portion and a pressure increasing portion. The windward evaporator and the leeward evaporator include at least one outflow side evaporation portion. The leeward evaporator includes a suction side evaporation portion. An outflow side evaporation temperature is a refrigerant evaporation temperature in the at least one outflow side evaporation portion of the leeward evaporator. A suction side evaporation temperature is a refrigerant evaporation temperature in the suction side evaporation portion of the leeward evaporator. At least one of the nozzle portion or the suction side decompressor is configured to adjust a refrigerant passage area such that a temperature difference between the outflow side evaporation temperature and the suction side evaporation temperature is at or below a predetermined reference temperature difference.

公开(公告)号：US20190107124A1

公开(公告)日：2019-04-11

申请号：US16209246

申请日：2018-12-04

Applicant: DENSO CORPORATION

Inventor： Yoichiro KAWAMOTO ,  Kazunori MIZUTORI ,  Etsuhisa YAMADA ,  Teruyuki HOTTA ,  Eitaro TANAKA

IPC: F04F5/10

Abstract: An ejector includes a shaft coupled to a passage formation member defining a refrigerant passage inside a body, and the shaft is slidably supported by a support member fixed to the body. A drive mechanism moves the shaft in an axial direction to change a passage sectional area of the refrigerant passage. The passage formation member is provided with a vibration suppressive member including a first mobile end that applies a load to enlarge the refrigerant passage and a second mobile end that applies a load to narrow the refrigerant passage. Both the first mobile end and the second mobile end are disposed on a same side of a slide region of the support member in the axial direction.

公开(公告)号：US20160200170A1

公开(公告)日：2016-07-14

申请号：US15023570

申请日：2014-09-15

Applicant: DENSO CORPORATION

Inventor： Yoichiro KAWAMOTO ,  Etsuhisa YAMADA ,  Haruyuki NISHIJIMA ,  Yoshiaki TAKANO ,  Yoshiyuki YOKOYAMA

IPC: B60H1/00 ,  F25B49/02 ,  F25B41/06 ,  F25B41/04 ,  F25B43/00 ,  F25B41/00

CPC classification number: B60H1/00885 ,  B60H2001/3298 ,  F25B40/02 ,  F25B41/00 ,  F25B41/043 ,  F25B41/062 ,  F25B41/067 ,  F25B43/006 ,  F25B49/022 ,  F25B2341/0012 ,  F25B2341/0013 ,  F25B2400/23 ,  F25B2500/18 ,  F25B2700/195 ,  F25B2700/2104 ,  F25B2700/2106 ,  F25B2700/21173

Abstract: An ejector-type refrigeration cycle includes a radiator radiating heat of refrigerant discharged from a compressor, an ejector depressurizing the refrigerant cooled in the radiator, a gas-liquid separator separating gas and liquid of the refrigerant flowing out of a diffuser portion of the ejector, an evaporator disposed in a refrigerant passage connecting the gas-liquid separator and a refrigerant suction port of the ejector, and an opening-closing valve switching between a first refrigerant flow path, in which an ejection refrigerant ejected from a nozzle portion of the ejector flows out of the diffuser portion, and a second refrigerant flow path, in which the ejection refrigerant flows out of the refrigerant suction port. When a rotation rate of the compressor is lower than or equal to a standard rotation rate, the first refrigerant flow path is switched to the second refrigerant flow path.

Abstract translation: 喷射式制冷循环包括散热从制冷剂排出的制冷剂的散热器，喷射器对在散热器中冷却的制冷剂进行减压，分离从分离器的扩散器部分流出的制冷剂的气液分离器， 设置在连接气液分离器和喷射器的制冷剂吸入口的制冷剂通路中的蒸发器，以及在从喷射器的喷嘴部喷出的喷射制冷剂流入的第一制冷剂流路之间切换的开闭阀 以及第二制冷剂流路，其中喷射制冷剂从制冷剂吸入口流出。 当压缩机的转速低于或等于标准转速时，第一制冷剂流路切换到第二制冷剂流路。

公开(公告)号：US20190383308A1

公开(公告)日：2019-12-19

申请号：US16557685

申请日：2019-08-30

Applicant: DENSO CORPORATION

Inventor： Yoichiro KAWAMOTO ,  Gota OGATA ,  Hiroshi OSHITANI ,  Ryu FUKUSHIMA ,  Teruyuki HOTTA ,  Tatsuhiro SUZUKI ,  Hang YUAN ,  Daisuke SAKURAI ,  Masahiro ITO ,  Hiroshi MAEDA

IPC: F04F5/04 ,  F04F5/20

Abstract: When an ejector having a variable nozzle and a variable throttle mechanism are integrated together as an ejector module, a nozzle-side central axis CL1 and a decompression-side driving mechanism have a twisted positional relationship, if the nozzle-side central axis CL1 is defined as a central axis of a nozzle-side driving mechanism in a displacement direction in which the nozzle-side driving mechanism of the ejector having the variable nozzle displaces a needle valve, and the decompression-side central axis CL2 is defined as a central axis of a decompression-side driving mechanism in a displacement direction in which the decompression-side driving mechanism of the variable throttle mechanism displaces a throttle valve. When viewed from the central axis direction of one of the nozzle-side central axis CL1 and the decompression-side central axis CL2, a driving portion corresponding to the one central axis is disposed to overlap with the other central axis.

公开(公告)号：US20160348948A1

公开(公告)日：2016-12-01

申请号：US15111872

申请日：2014-12-16

Applicant: DENSO CORPORATION

Inventor： Toru TAKAHASHI ,  Eitaro TANAKA ,  Satoshi INOUE ,  Masatoshi KUROYANAGI ,  Yoichiro KAWAMOTO ,  Etsuhisa YAMADA ,  Haruyuki NISHIJIMA

IPC: F25B1/10 ,  F04F5/54 ,  F25B41/00 ,  F04F5/18 ,  F04F5/46

CPC classification number: F25B1/10 ,  B60H2001/3298 ,  F04F5/18 ,  F04F5/20 ,  F04F5/46 ,  F04F5/48 ,  F04F5/54 ,  F25B27/00 ,  F25B40/02 ,  F25B41/00 ,  F25B41/062 ,  F25B2327/001 ,  F25B2341/0012 ,  F25B2400/23 ,  F25B2500/18

Abstract: An ejector has a swirling space, a pressure reducing space, a suction passage, a pressure increasing space, a nozzle passage, a diffuser passage, a passage forming member that forms the nozzle passage and the diffuser passage, and a vibration suppressing portion that suppresses a vibration of the passage forming member. The vibration suppressing portion has (i) a first elastic member that applies a load to the passage forming member in a direction in which an area of a cross section perpendicular to the direction of the central axis of the nozzle passage and the diffuser passage decreases and (ii) a second elastic member that applies a load to the passage forming member in a direction opposite from the direction in which the first elastic member applies the load to the passage forming member.

Abstract translation: 喷射器具有旋转空间，减压空间，吸入通道，增压空间，喷嘴通道，扩散通路，形成喷嘴通道的通道形成构件和扩散通路，以及抑制部件 通道形成构件的振动。 所述振动抑制部具有：（i）第一弹性部件，其沿与所述喷嘴通路的中心轴方向垂直的截面积与所述扩散通路减小的方向对所述通道形成部件施加载荷， （ii）第二弹性构件，其沿与第一弹性构件向该通道形成构件施加负载的方向相反的方向向通道形成构件施加载荷。

公开(公告)号：US20230413482A1

公开(公告)日：2023-12-21

申请号：US18461375

申请日：2023-09-05

Applicant: DENSO CORPORATION

Inventor： Kimio KOHARA ,  Takahito SHIBATA ,  Yoichiro KAWAMOTO

IPC: H05K7/20

CPC classification number: H05K7/203 ,  H05K7/20327

Abstract: A cooling device includes a cooling tank, a liquid storage tank, and a connector. The cooling tank stores refrigerant liquid for immersing and cooling a heating element. The liquid storage tank stores the refrigerant liquid outside the cooling tank and has an atmosphere opening portion. The connector connects the two tanks and allows the refrigerant liquid to pass through the connector. One end of the connector has a cooling-tank opening portion located in a gravity direction at a position lower than or same as a liquid level of the refrigerant liquid. An upper portion of the cooling tank stores a gas generated in the cooling tank. The refrigerant liquid flows between the two tanks via the connector in accordance with a change in volume of the gas. The liquid storage tank is provided upward of the cooling tank. The two tanks are connected only by the connector.

公开(公告)号：US20190338790A1

公开(公告)日：2019-11-07

申请号：US16452758

申请日：2019-06-26

Applicant: DENSO CORPORATION

Inventor： Tatsuhiro SUZUKI ,  Gota OGATA ,  Yoichiro KAWAMOTO ,  Ryu FUKUSHIMA

IPC: F04F5/04 ,  F04F5/46

Abstract: An ejector includes a nozzle, a needle and a body. The nozzle reduces a pressure of a fluid and discharges the fluid as an injected fluid from a fluid injection port. The body includes a fluid suction port and a pressure increasing portion. The fluid suction port draws, as a suction fluid, a fluid from an outside of the body by using a suction force generated by the injected fluid. The pressure increasing portion increases a pressure of a mixture of the injected fluid and the suction fluid. The nozzle includes a throat portion and a nozzle-side tapered portion. The throat portion reduces a passage cross-sectional area of the fluid passage to be smallest in the fluid passage at the throat portion. The nozzle-side tapered portion expands the passage cross-sectional area of the fluid passage toward the downstream side in the flow direction of the fluid. In an axial cross section, an injection-flow spread angle formed on the downstream side in the flow direction of the fluid between a central axis and a tangent line of an injection-flow center line at the fluid injection port is 0° or greater.

公开(公告)号：US20160177974A1

公开(公告)日：2016-06-23

申请号：US14908587

申请日：2014-07-25

Applicant: DENSO CORPORATION

Inventor： Eitaro TANAKA ,  Toru TAKAHASHI ,  Satoshi INOUE ,  Haruyuki NISHIJIMA ,  Etsuhisa YAMADA ,  Yoichiro KAWAMOTO

IPC: F04F5/16

CPC classification number: F04F5/04 ,  F04F5/16 ,  F04F5/44 ,  F04F5/46 ,  F04F5/48 ,  F25B27/00 ,  F25B40/02 ,  F25B41/00 ,  F25B41/062 ,  F25B2327/001 ,  F25B2341/0012 ,  F25B2400/23 ,  F25B2500/18

Abstract: In an ejector, formed in a body is a swirling space which lets a high-pressure refrigerant flowing from a refrigerant inlet port swirl and introduces the swirling high-pressure refrigerant into a depressurizing space in which the swirled high-pressure refrigerant is depressurized and expanded. A passage formation member that defines a nozzle passage and a diffuser passage is shaped to have a cross-sectional area increasing with distance from the depressurizing space. Further, a temperature sensing unit of a drive device that displaces the passage formation member is housed in the body, and the temperature sensing unit and a diaphragm have annular shapes to surround at least the axial line of the passage formation member.

Abstract translation: 在一个喷射器中，形成在一个主体中的是一个涡旋空间，它使从制冷剂入口流出的高压制冷剂旋转，并将涡旋高压制冷剂引入减压膨胀的高压制冷剂的减压空间 。 限定喷嘴通道和扩散通道的通道形成构件被成形为具有随着距离减压空间的距离而增加的横截面面积。 此外，驱动装置的温度检测单元位于通道形成构件中，并且温度检测单元和隔膜具有至少围绕通道形成构件的轴线的环形形状。