ABSORPTION HEAT PUMP DEVICE

PURPOSE:To provide an absorption type heat pump device which has high reliability and high efficiency by a method wherein two heat pumps are used in a two-stage, during both cooling and heating operation, an absorption type cycle is carried out, and switching therebetween is performed in a way that external fluid flowing through a heat-exchange fluid feed pipe is varied. CONSTITUTION:When cold water is produced, cooling water is caused to flow through second, third, fifth heat-exchange fluid feed pipes 82, 83, and 85 to heat transfer pipes 22, 24, and 62 of a first absorber 12, a first condenser 14, and a second absorber 52 to derive heat generated in an absorption cycle. Cold water is caused to flow to heat transfer pipes 21 and 61 of first and second vaporizers 11 and 51 and cooled by means of a vaporizing latent heat. When hot water is produced, water for a heat source is caused to flow to the heat transfer pipe 21 of the first vaporizer 11 to vaporize a refrigerant, circulating water is caused to circulate between the first absorber 12 and the second vaporizer 51, and a refrigerant is vaporized in the second vaporizer 51 by means of heat generated by the first absorber 12. Hot water is caused to flow through the heat transfer pipes 62 and 24 of the second absorber 52 and the first condenser 14 and heated to a given temperature by means of heat generated through absorption and a condensing heat.