Patent ID: 7464562

Claim:
An absorption heat pump, comprising: an evaporator which takes in a first heat source and evaporates refrigerant liquid into refrigerant vapor; an absorber which has a heat receiving medium passage and which takes in a heat receiving medium liquid through a heat receiving medium inlet of the heat receiving medium passage, heats the heat receiving medium liquid with heat of absorption generated when the refrigerant vapor generated in the evaporator is absorbed into a solution, and discharges the heat receiving medium in a form of mixture of vapor and liquid through a heat receiving medium outlet of the heat receiving medium passage; a generator which takes in a second heat source and evaporates the refrigerant from the solution having absorbed the refrigerant vapor; a vapor-liquid separator disposed at the heat receiving medium outlet for separating the heat receiving medium liquid from the vapor in the mixture, the separated heat receiving medium liquid being introduced into the heat receiving medium inlet; a first supplying means supplying the heat receiving medium liquid separated in the vapor-liquid separator to the heat receiving medium passage; and a second supplying means supplying the heat receiving medium liquid to the vapor-liquid separator.