Patent Number: 6,332,496

Title: Refrigeration cycle apparatus

Abstract: A refrigeration cycle is switched from a refrigeration cycle circuit to ahot gas heater circuit to make the hot gas discharged from a compressorflow into an evaporator and heat the vehicle passenger compartment, atwhich time, when a suction pressure (Ps) of the compressor becomes a lowpressure below a first predetermined pressure, the discharge volume (Vc)of the compressor is made larger to ensure a sufficient auxiliary heatingperformance. Further, when the hot gas is made to flow into the evaporatorto heat the vehicle passenger compartment, if the suction pressure (Ps) ofthe compressor becomes a higher pressure over a second predeterminedpressure, the discharge volume (Vc) of the compressor is made smaller toprotect the refrigeration cycle parts and lighten the ON, OFF shock.

Inventors: Takano; Yoshiaki (Kosai, JP), Izawa; Satoshi (Kariya, JP)


International Classification: B60H 1/00 (20060101); B60H 1/32 (20060101); F04B 27/18 (20060101); F04B 27/14 (20060101); F25B 45/00 (20060101); F25B 41/06 (20060101); F25B 41/04 (20060101); F25B 43/00 (20060101); F25B 49/02 (20060101); F25B 27/00 (20060101); F25B 31/00 (20060101); F25B 001/00 (); B60H 001/00 ()

Expiration Date: 12/25/2014