Patent Number: 6,293,123

Title: Refrigeration cycle device

Abstract: During a heating mode, higher-pressure refrigerant having passed through a condenser within an air-conditioning duct is divided into two portions. One portion is depressurized by a first depressurizing device to an intermediate pressure. Heat exchange is performed in a refrigerant-refrigerant heat exchanger between the other portion of the higher-pressure refrigerant having just passed through the condenser and the intermediate-pressure refrigerant having just passed through the first depressurizing device. During the heating mode, the higher-pressure refrigerant cooled in refrigerant-refrigerant heat exchanger 23 is supercooled by a supercooling device within the air-conditioning duct. Then, the supercooled higher-pressure refrigerant is depressurized by a second depressurizing device to a lower pressure, thereby vaporized in an outdoor heat-exchanger.

Inventors: Iritani; Kunio (Anjo, JP), Itoh; Satoshi (Kariya, JP)

Assignee: Denso Corporation

International Classification: B60H 1/32 (20060101); F25B 13/00 (20060101); F25B 40/00 (20060101); F25B 40/02 (20060101); F25B 5/02 (20060101); F25B 5/00 (20060101); F25D 017/06 (); F25B 041/00 ()

Expiration Date: 09/25/2018