Patent ID: 6997010

Claim:
A regenerative heat pump system comprising: a heat pump cycle having a compressor, a radiator for a refrigerant, an expansion valve, a evaporator for the refrigerant, and a refrigerant flow path; first storage means of storing a heat storage material; heat exchange means between first refrigerant and heat storage material of heating said heat storage material by heat transferred from said refrigerant so that said heat storage material is decomposed or some thereof is separated; heat exchange means between second refrigerant and heat storage material of transferring heat from at least one kind of said decomposed or separated heat storage material to said refrigerant; second storage means of storing at least one kind of said decomposed or separated heat storage material; and heat generating means of generating heat to heat a heating medium by recombining said heat storage material having been stored in said second storage means, wherein said heat exchange means between first refrigerant and heat storage material is also used as said radiator of the heat pump cycle, and heat exchange means between second refrigerant and heat storage material is also used as at least a part of said evaporator of the heat pump cycle.