Patent ID: 8671706
Filing Date: 2014-03-18
Classification: F24F,F25B

Abstract:
1. A heat pump comprising: a main circuit which comprises a rotary compression device having a plurality of compression chambers and a condenser for condensing refrigerant passed through the rotary compression device and an expansion device for throttling refrigerant passed through the condenser and an evaporator for evaporating refrigerant expanded by the expansion device; a first refrigerant injection flow path which is bypassed at the space between the condenser and the evaporator and injects refrigerant to one of the plurality of compression chambers; and a second refrigerant injection flow path which is bypassed at the space between the condenser and the evaporator and injects refrigerant to the other of the plurality of compression chambers, wherein the first refrigerant injection flow path comprises a first heat exchanger which exchanges heat of the refrigerant flowing from the expansion device to the evaporator for heat of the refrigerant bypassed from the expansion device to the first refrigerant injection flow path; and the second refrigerant injection flow path comprises a second heat exchanger which exchanges heat of the refrigerant flowing from the expansion device to the evaporator for heat of the refrigerant bypassed from the expansion device to the second refrigerant injection flow path; and the first heat exchanger and the second heat exchanger which are respectively in the shape of a plate are formed to one unit.