Patent ID: 11879677
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An air-conditioning apparatus, comprising:
a refrigerant circuit through which refrigerant circulates, the refrigerant circuit including a compressor, a refrigerant flow switching device, a heat source-side heat exchanger, a decompression device, a load-side heat exchanger, a first refrigerant pipe, a coupling pipe, and a second refrigerant pipe, the load-side heat exchanger including a first heat exchanger and a second heat exchanger, the first refrigerant pipe connecting the decompression device and the first heat exchanger, the coupling pipe connecting the first heat exchanger and the second heat exchanger, the second refrigerant pipe connecting the second heat exchanger and the refrigerant flow switching device;
an air-sending device configured to generate an air flow passing through the load-side heat exchanger;
a bypass pipe connecting the first refrigerant pipe and the coupling pipe; and
a bypass valve disposed in the bypass pipe,
the refrigerant flow switching device being configured to switch between cooling operation that causes the refrigerant with low pressure flowing out from the load-side heat exchanger to be suctioned into the compressor and heating operation that causes the refrigerant with high pressure discharged from the compressor to flow into the load-side heat exchanger,
the first heat exchanger being disposed on windward of the second heat exchanger in a direction of the air flow generated by the air-sending device,
the air flow that passes through the first heat exchanger passing through the second heat exchanger,
during the cooling operation, the bypass valve being configured to cause a part of the refrigerant flowing through the first refrigerant pipe to flow through the coupling pipe through the bypass pipe,
during the heating operation, the bypass valve being configured to block a flow of the refrigerant flowing from the coupling pipe toward the first refrigerant pipe through the bypass pipe, and cause all of the refrigerant flowing through the coupling pipe to flow from the coupling pipe to the first heat exchanger.