Patent ID: 8220284
Filing Date: 2012-07-17
Classification: B60H

Abstract:
1. A heat storage device of a vehicle heat pump, comprising: a first heat storage material which exchanges heat with a heat afferent medium and accumulates heat; a second heat storage material which exchanges heat with the heat afferent medium and accumulates heat, whereby the second heat storage material is a thermal medium which circulates between a first site where it exchanges heat with the heat afferent medium, and a second site where it exchanges heat with the first heat storage material, the first site and the second site being located within the first heat storage material; a heat demand unit to which the thermal medium is supplied; a changeover device which selectively performs or intercepts heat exchange between the heat afferent medium and the thermal medium; a first circulation path configured to circulate the thermal medium between the first site, the first heat storage material, and the heat demand unit; and a second circulation path including a portion in common with the first circulation path, the second circulation path being configured to circulate the thermal medium so as to repeatedly supply the thermal medium to the first and second sites without passing it through the heat demand unit.