Air-conditioning apparatus
AssigneeMitsubishi Electric Corporation
InventorsKoji Yamashita, Hiroyuki Morimoto, Takeshi Hatomura, Shinichi Wakamoto, Naofumi Takenaka
Life of this patent
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Abstract
An air-conditioning apparatus including a refrigerant circuit having an excess refrigerant recovery pipe connected between an inlet of at least one of heat source side heat exchangers and a first refrigerant flow blocking device or between an outlet of the at least one of the heat source side heat exchangers and a second refrigerant flow blocking device, to a passage connected to a suction side of a compressor, and an excess refrigerant recovery device disposed in the excess refrigerant recovery pipe.
Claims12
An air-conditioning apparatus that forms a refrigerant circuit connecting a compressor;
- at least two heat source side heat exchangers connected in parallel;
- a plurality of expansion devices;
- and refrigerant passages of a plurality of heat exchangers related to heat transfer medium that exchange heat between a heat source side refrigerant and a heat transfer medium, the refrigerant circuit circulating the heat source side refrigerant,
- wherein
- the refrigerant circuit includes
- a bypass pipe that connects a point prior to and a point after the at least two heat source side heat exchangers to bypass the heat source side heat exchangers,
- a heat source side refrigerant flow control device configured to close either the passage of the heat source side refrigerant flowing through the heat source side heat exchangers or the passage of the refrigerant flowing through the bypass pipe while opening the other passage simultaneously,
- a first refrigerant flow blocking device disposed at an inlet of at least one of the heat source side heat exchangers,
- a second refrigerant flow blocking device disposed at an outlet of the at least one of the heat source side heat exchangers,
- an excess refrigerant recovery pipe connected between the inlet of the at least one of the heat source side heat exchangers and the first refrigerant flow blocking device or between the outlet of the at least one of the heat source side heat exchangers and the second refrigerant flow blocking device, to a passage connected to a suction side of the compressor, and
- an excess refrigerant recovery device disposed in the excess refrigerant recovery pipe.
Dependencies are inferred from the claim text.