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：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.