公开(公告)号：US11549522B2

公开(公告)日：2023-01-10

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 ,  B60H1/32

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：US11530854B2

公开(公告)日：2022-12-20

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: F25B5/02 ,  F25B1/06 ,  F25B41/00 ,  F25B9/08 ,  F25B40/06 ,  F25B41/40

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：US11460049B2

公开(公告)日：2022-10-04

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 ,  F04F5/46 ,  F25B1/00 ,  F04F5/18 ,  F04F5/20 ,  F04F5/48 ,  F04F5/54 ,  F25B1/10

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：US10029538B2

公开(公告)日：2018-07-24

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 ,  F02B41/06 ,  F25B43/00 ,  F25B41/00 ,  F25B41/04 ,  F25B41/06 ,  F25B40/02 ,  B60H1/32

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.

公开(公告)号：US20250046669A1

公开(公告)日：2025-02-06

申请号：US18921484

申请日：2024-10-21

Applicant: DENSO CORPORATION

Inventor： Takuya Mitsuhashi ,  Kimio Kohara ,  Yoichiro Kawamoto

IPC: H01L23/367 ,  H01L23/373

Abstract: An electronic component with heat dissipating part includes: an electronic part, a heat radiating part, and a joining member. The electronic part generates heat during operation. The heat radiating part radiates heat generated by the electronic part to an ambient fluid. The joining member joins the electronic part and the heat radiating part. A joint area between the electronic part and the heat radiating part is 100 mm2 or more. The joining member forms a porous metal layer in which pores are uniformly distributed throughout.

公开(公告)号：US10344777B2

公开(公告)日：2019-07-09

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: F04F5/04 ,  F04F5/46 ,  F04F5/44 ,  F04F5/48 ,  F25B41/00 ,  F25B41/06 ,  F04F5/16 ,  F25B27/00 ,  F25B40/02

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.

公开(公告)号：US09879887B2

公开(公告)日：2018-01-30

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 ,  F04F5/20 ,  F04F5/46 ,  F04F5/48 ,  F25B40/02 ,  F25B41/00 ,  F25B41/06 ,  F04F5/18 ,  F04F5/54 ,  F25B27/00 ,  B60H1/32

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.

公开(公告)号：US11480197B2

公开(公告)日：2022-10-25

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 ,  F25B41/24 ,  F25B5/04 ,  F04F5/46 ,  F04F5/20 ,  F25B1/10

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.