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.

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.