Patent ID: 8756946

Claim:
A method of improving a heating temperature of a heat pump comprising steps of: a dilute solution of an absorber (D 1 ) passing through a solution heat exchanger (G 1 ) and then entering a generator (A 1 ), and then heating the dilute solution by a residual heat medium flowing through the generator (A 1 ) for releasing a refrigerant vapor to provided to a condenser (B 1 ), a concentrated solution of the generator (A 1 ) flowing through a solution pump (E 1 ), the solution heat exchanger (G 1 ) and entering the absorber (D 1 ) for absorbing heat and being partially vaporized, and then entering a steam bleeding chamber ( 1 ), the steam bleeding chamber ( 1 ) releasing the refrigerant vapor to enter the condenser (B 1 ), the concentrated solution flowing through a new added solution pump ( 3 ), a new added solution heat exchanger ( 5 ) and then connecting a new added absorber ( 2 ), then the concentrated solution absorbing the refrigerant vapor came from the absorber (D 1 ) and providing a high temperature heating load to the heated medium, the dilute solution of the new added absorber ( 2 ) flowing through the new added solution heat exchanger ( 5 ) and then entering the absorber (D 1 ) for absorbing the refrigerant vapor came from an evaporator (C 1 ) and releasing heat, the refrigerant vapor, entering the condenser (B 1 ) from the generator (A 1 ) and the new added steam bleeding chamber ( 1 ), releasing heat to a cooling medium and becoming a liquid refrigerant, the liquid refrigerant flowing through a liquid refrigerant pump (F 1 ) and then being divided into two parts, wherein a part of the liquid refrigerant flows through a new added throttle ( 6 ) and then enters the evaporator (C 1 ) for absorbing residual heat and becoming refrigerant vapor provided to the absorber (D 1 ); in the absorber (D 1 ), the refrigerant vapor is absorbed by the solution and releases heat to the other road of solution and liquid refrigerant which flows through absorber (D 1 ); the other part flows through absorber (D 1 ) and absorbs heat becoming refrigerant vapor provided to the new added absorber ( 2 ); at first, the concentration of the solution entering the new added absorber ( 2 ) is promoted by the generator (A 1 ) for the first time; and then, the solution concentration is improved by the absorber (D 1 ) and the new added steam bleeding chamber ( 1 ) for the second time; the refrigerant vapor entering the new added absorber ( 2 ) is produced by the heating of the absorber (D 1 ); the heating temperature of the new added absorber ( 2 ) is higher than the one of the absorber (D 1 ), thus achieving the two stages improvement of the residual heat temperature.