Refrigerant cycle apparatus

Details Refrigerant cycle apparatus Refrigerant cycle apparatus

2007-06-05

2007-06-05

Jones, Melvin (Department: 3744)

Refrigeration

Refrigeration producer

Heat exchange between diverse function elements

C062S476000

Reexamination Certificate

active

11053901

ABSTRACT:
For a purpose of preventing a compressor from being damaged by liquid compression without disposing any accumulator on a low-pressure side, there is disclosed a transition critical refrigerant cycle apparatus having a supercritical pressure on a high-pressure side. The transition critical refrigerant cycle apparatus constituted by connecting a compressor, a gas cooler, a pressure reducing device, an evaporator and the like in an annular shape, using carbon dioxide as a refrigerant, and capable of having the supercritical pressure on the high-pressure side comprises: an internal heat exchanger for exchanging heat between a refrigerant which has flown out of the gas cooler and a refrigerant which has flown out of the evaporator. This internal heat exchanger comprises a high-pressure-side channel through which the refrigerant from the gas cooler flows, and a low-pressure-side channel which is disposed in a heat exchanging manner with this high-pressure-side channel and through which the refrigerant from the evaporator flows, the refrigerant is passed upwards from below in the high-pressure-side channel, and the refrigerant is passed downwards from above in the low-pressure-side channel.

REFERENCES:
patent: 6105386 (2000-08-01), Kuroda et al.
patent: 6134900 (2000-10-01), Nishida et al.
patent: 7-18602 (1995-03-01), None

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