US 7,320,228 B2 | ||
Refrigerant cycle apparatus | ||
Ichiro Kamimura, Gunma (Japan); Hiroshi Mukaiyama, Gunma (Japan); Satoshi Imai, Gunma (Japan); Hiroyuki Itsuki, Gunma (Japan); and Masahisa Otake, Gunma (Japan) | ||
Assigned to Sanyo Electric Co., Ltd., Osaka (Japan) | ||
Filed on Aug. 12, 2005, as Appl. No. 11/202,204. | ||
Claims priority of application No. 2004-235405 (JP), filed on Aug. 12, 2004. | ||
Prior Publication US 2006/0032267 A1, Feb. 16, 2006 | ||
Int. Cl. F25B 1/00 (2006.01) |
U.S. Cl. 62—498 [62/510] | 4 Claims |
1. A refrigerant cycle apparatus in which a compressor, a radiator, a first pressure reducing device, an intermediate pressure
receiver, a second pressure reducing device, and an evaporator are successively connected to one another in an annular form
to constitute a refrigerant circuit and which is operated at a supercritical pressure on a high-pressure side,
wherein the compressor has a first compression element and a second compression element which compresses a refrigerant compressed
by the first compression element; a gas phase refrigerant in the intermediate pressure receiver is sucked into the second
compression element of the compressor; a liquid phase refrigerant in the intermediate pressure receiver is pressure reduced
by the second pressure reducing device and is then introduced into the evaporator;
wherein the first pressure reducing device comprises a capillary tube on an upstream side of the refrigerant and throttling
means on a downstream side of the capillary tube; and
wherein an inner diameter of the capillary tube is set to 0.1 mm or more and 0.4 mm or less.
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