Heat pump system

摘要

In a heat pump system according to the present invention, at least part of a plurality of outdoor heat-exchanging flow paths that pass through an outdoor heat exchanger is alternately selected as a flow path for defrosting and is used, and the other flow path is used as a flow path for evaporation so that defrosting and a heating operation can be simultaneously performed. In addition, the refrigerant in which a defrosting action is performed, while passing through the outdoor heat exchanger, is throttled and then is used for an evaporation action so that the structure of the heat pump system is simple and both heating and defrosting can be performed.

主权项

1. A heat pump system comprising:
a compressor; an indoor heat exchanger; an outdoor heat exchanger; a plurality of outdoor heat-exchanging flow paths that are formed to pass through the outdoor heat exchanger and that heat-exchange a refrigerant flowing into the outdoor heat exchanger with outdoor air; and a flow path selection unit that alternately selects at least part of the plurality of outdoor heat-exchanging flow paths as a first flow path for defrosting and supplies the refrigerant condensed by the indoor heat exchanger to the first flow path for defrosting so that a defrosting action is capable of being performed and that selects the other flow path than the first flow path for defrosting as a second flow path for evaporation and that throttles the refrigerant discharged after the defrosting action is performed and then supplies the throttled refrigerant to the second flow path for evaporation so that an evaporation action is capable of being performed, wherein the flow path selection unit comprises a suction valve for defrosting which is rotatably installed on a flow path on which an outlet of the indoor heat exchanger and an inlet of the outdoor heat exchanger are connected to each other, and which includes a suction rotation port for defrosting that is configured to supply the refrigerant condensed by the indoor heat exchanger to the flow path for defrosting, wherein the suction valve for defrosting comprises:
a fixing portion which is fixedly installed at a suction side of the outdoor heat exchanger and in which a plurality of suction fixing ports for defrosting are formed to communicate with the plurality of outdoor heat-exchanging flow paths, respectively; anda rotation portion which is rotatably coupled to the fixing portion and in which the suction rotation port for defrosting selectively communicates with at least part of the plurality of suction fixing ports for defrosting according to a rotation angle of the rotation portion.