Efficient compact type absorption heat pump and heat exchange unit

The utility model discloses an efficient compact absorption heat pump and a heat exchange unit, which comprise an absorption heat pump, a water-water plate heat exchanger, a solution heat exchanger, a refrigerant pump, a solution pump and a connecting pipeline, and the absorption heat pump comprises an evaporator, an absorber, a generator and a condenser; the evaporators and the absorbers both adopt two-stage or three-stage heat exchange, the evaporators and the absorbers of the same stage are arranged in a left-right adjacent mode and communicate with each other in shell pass, and the evaporators and the absorbers of different stages are arranged in an up-down mode and do not communicate with each other in shell pass. The evaporators and the absorbers in different stages are respectively separated into independent spaces by evaporator refrigerant trays and absorber solution trays which are arranged at the bottoms of the evaporators and the absorbers; the generator and the condenser are in single-stage heat e