| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an inexpensive and high-reliability vehicle air conditioner with heat pump that has excellent mountability only by using in common circuit components, apparatuses and the like having the same pressure conditions as those of the original cooling cycle, and adding minimal heating circuits and apparatuses. <P>SOLUTION: An original refrigeration cycle 16 for cooling includes: an indoor condenser 8 connected to a discharge circuit of an electric compressor 9 and arranged on the downstream side of an indoor evaporator 7 for an HVAC unit 2; a first heating circuit 18 connected to a receiver 11 via a switching means 17 arranged on the intake side of an outdoor condenser 8; and a second heating circuit 23 connected between the outlet side of the receiver 11 and the intake side of the electric compressor 9 and provided with a second expansion valve 20 and an outdoor evaporator 21. A heat pump cycle 24 for heating can be formed of the electric compressor 9, the indoor condenser 8, the switching means 17, the first heating circuit 18, the receiver 11, and the second heating circuit 23 provided with the second expansion valve 20 and the outdoor evaporator 21. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
