Patent ID: 6915649
Filing Date: 2005-07-12
Classification: B60H,F01P

Abstract:
1. Motor vehicle temperature regulation apparatus comprising: a first heat pump comprising a main compression circuit for refrigerant fluid taking heat from a cold source to transfer it to a hot source; the cold source comprising a first heat exchanger for exchanging heat between the refrigerant fluid and a coolant liquid, thereby thermally coupling the main refrigerant circuit to a first secondary coolant circuit; the hot source comprising a second heat exchanger thermally coupling the main refrigerant circuit to a second secondary coolant circuit, wherein the first secondary circuit includes first selective connection means for selectively connecting the first secondary circuit to the upstream and downstream ends of a branch of a coolant liquid circuit, wherein the branch is used to cool a heat engine of the vehicle, the branch being designated as a heater branch, the second secondary circuit including second selective connection means for connection to a “hot” heat exchanger, and the first selective connection means comprise a valve means comprising: a first port connected to the downstream end of the heater branch; a second port connected to an inlet of the first heat exchanger; and a third port connected to an inlet of the hot heat exchanger.