Denso Corporation

Daisuke Sakurai

Masahiro Ito

Hiroshi Oshitani

Hiroshi Maeda

Yoichiro Kawamoto

Hang Yuan

Teruyuki Hotta

Tatsuhiro Suzuki

Gota Ogata

Ryu Fukushima

Yohei Nagano

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.

Ejector refrigeration cycle

When an ejector having a variable nozzle and a variable throttle mechanism are integrated together as an ejector module, a nozzle-side central axis CLand a decompression-side driving mechanism have a twisted positional relationship, if the nozzle-side central axis CLis 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 CLis 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 CLand the decompression-side central axis CL, a driving portion corresponding to the one central axis is disposed to overlap with the other central axis.

Ejector module

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Kariya, Japan

Daisuke Sakurai