Air-conditioning apparatus
AssigneeMitsubishi Electric Corporation
InventorsKosuke Tanaka, Takuya Matsuda
Life of this patent
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Abstract
Provided is an air-conditioning apparatus including a switching valve and a bypass circuit. The switching valve is provided between an expansion valve and an outdoor heat exchanger. The bypass circuit has a first end connected to a refrigerant pipe connecting a compressor and an indoor heat exchanger to each other, and a second end connected to the switching valve. During a heating operation, the air-conditioning apparatus causes a rotating member of the switching valve to rotate to sequentially connect, to the bypass circuit, flow passages of the outdoor heat exchanger connected in parallel, to thereby defrost the outdoor heat exchanger while performing the heating operation.
Claims14
An air-conditioning apparatus comprising:
- a refrigeration cycle circuit including a compressor, an indoor heat exchanger configured to serve as a condenser, an expansion valve, and an outdoor heat exchanger configured to serve as an evaporator;
- a switching valve provided between the expansion valve and the outdoor heat exchanger;
- and
- a bypass circuit having a first end and a second end,
- the first end being connected between the compressor and the indoor heat exchanger,
- the second end being connected to the switching valve,
- the outdoor heat exchanger including a first flow passage and a second flow passage connected in parallel between the expansion valve and a suction side of the compressor,
- the switching valve including
- a body,
- a rotating member,
- a first inlet provided to the body, and communicating with the expansion valve,
- a second inlet provided to the rotating member, and communicating with the second end of the bypass circuit,
- a first outlet provided to the body, and communicating with the first flow passage, and
- a second outlet provided to the body, and communicating with the second flow passage,
- the rotating member being rotatable between a plurality of angular positions, the plurality of angular positions including
- a first angular position allowing the first inlet to communicate with the second outlet, and allowing the second inlet to communicate with the first outlet,
- a second angular position allowing the first inlet to communicate with the first outlet, and allowing the second inlet to communicate with the second outlet, and
- a third angular position allowing the first inlet to communicate with both of the first outlet and the second outlet.
An air-conditioning apparatus comprising:
- a refrigeration cycle circuit including a compressor, an indoor heat exchanger configured to serve as a condenser, an expansion valve, and an outdoor heat exchanger configured to serve as an evaporator;
- a switching valve provided between the expansion valve and the outdoor heat exchanger;
- and
- a bypass circuit having a first end and a second end,
- the first end being connected between the compressor and the indoor heat exchanger,
- the second end being connected to the switching valve,
- the outdoor heat exchanger including a first flow passage and a second flow passage connected in parallel between the expansion valve and a suction side of the compressor,
- the switching valve including
- a body,
- a rotating member,
- a first inlet provided to the rotating member, and communicating with the expansion valve,
- a second inlet provided to the body, and communicating with the second end of the bypass circuit,
- a first outlet provided to the body, and communicating with the first flow passage, and
- a second outlet provided to the body, and communicating with the second flow passage,
- the rotating member being rotatable between a plurality of angular positions, the plurality of angular positions including
- a first angular position allowing the first inlet to communicate with the second outlet, and allowing the second inlet to communicate with the first outlet,
- a second angular position allowing the first inlet to communicate with the first outlet, and allowing the second inlet to communicate with the second outlet, and
- a third angular position allowing the first inlet to communicate with both of the first outlet and the second outlet.
Dependencies are inferred from the claim text.