AIR-CONDITIONING APPARATUS

摘要

Provided is an air-conditioning apparatus configured so that a decrease in a refrigeration capacity can be suppressed without increasing the amount of refrigerant with which a refrigerant circuit is filled and that refrigerant can be suitably stored during a pump down operation. The air-conditioning apparatus includes a first on-off valve provided at a pipe between an expansion valve and a use side heat exchanger, a bypass branching from a pipe between the expansion valve and the first on-off valve and connected to a pipe at a suction-side of a compressor, and a refrigerant storage unit configured to store the refrigerant having passed through the bypass. In a pump down operation in which the compressor operates with the first on-off valve being in a closed state, the refrigerant having flowed out from the heat source side heat exchanger flows into the bypass, and then, is stored in the refrigerant storage unit.

主权项

1. An air-conditioning apparatus comprising:
a refrigerant circuit in which a compressor, a heat source side heat exchanger, an expansion valve, and a use side heat exchanger are connected by pipes, and refrigerant circulates; a first on-off valve provided at a pipe between the expansion valve and the use side heat exchanger; a bypass branching from a pipe between the expansion valve and the first on-off valve or a pipe between the heat source side heat exchanger and the expansion valve and connected to a pipe on a suction side of the compressor; and a refrigerant storage unit configured to store the refrigerant passed through the bypass, the refrigerant storage unit storing the refrigerant flowing into the bypass from the heat source side heat exchanger in a pump down operation in which the compressor operates with the first on-off valve being in a closed state.