초록 ▼

A refrigerating cycle apparatus having a hot gas bypass heating mode that quickly recovers refrigerant in the condenser side to the evaporator side to maximize the work performed by the compressor in the hot gas bypass heating mode, to thereby maximize hot gas bypass heating capacity. Specifically,

A refrigerating cycle apparatus having a hot gas bypass heating mode that quickly recovers refrigerant in the condenser side to the evaporator side to maximize the work performed by the compressor in the hot gas bypass heating mode, to thereby maximize hot gas bypass heating capacity. Specifically, in a refrigerating cycle apparatus in which operation of a hot gas bypass heating mode is carried out with the inlet side of a condenser closed and the inlet side of a hot gas bypass conduit opened by valves, refrigerant in the condenser side is recovered to the evaporator side by operating the compressor for a predetermined time with the inlet sides of both the condenser and the hot gas bypass conduit closed by the valves.

대표청구항 ▼

[ What is claimed is:] [1.] A refrigerating cycle apparatus comprising:a compressor for compressing and delivering a refrigerant;a condenser for condensing the refrigerant compressed by the compressor;a first pressure-reducing device for reducing in pressure the refrigerant condensed by the condense

[ What is claimed is:] [1.] A refrigerating cycle apparatus comprising:a compressor for compressing and delivering a refrigerant;a condenser for condensing the refrigerant compressed by the compressor;a first pressure-reducing device for reducing in pressure the refrigerant condensed by the condenser;an evaporator for evaporating the refrigerant reduced in pressure by the first pressure-reducing device;a hot gas bypass conduit directly connecting a delivery side of the compressor to an inlet side of the evaporator;a second pressure-reducing device provided in the hot gas bypass conduit for reducing in pressure gas refrigerant compressed by the compressor;valves for switching a connection between the delivery side of the compressor and an inlet side of the condenser, and a connection between the delivery side of the compressor and an inlet side of the hot gas bypass conduit;wherein a normal cooling mode is carried out with the inlet side of the condenser opened and the inlet side of the hot gas bypass conduit closed by the valves, and a hot gas bypass heating mode is carried out with the inlet side of the condenser closed and the inlet side of the hot gas bypass conduit opened by the valves; anda controller for recovering refrigerant from the condenser side to the evaporator side upon starting of the heating mode, the controller causing the refrigerant to be recovered by operating the compressor with at least the inlet side of the hot gas bypass conduit closed by the valves.