| 摘要 |
The present invention relates to an outdoor heat exchanger and air conditioner in which the passage of a refrigerant is varied in an air cooling operation and an air heating operation. An outdoor heat exchanger according to an embodiment of the present invention includes a first header pipe configured to have a refrigerant, compressed by a compressor, to flow therein in the air cooling operation, a first heat exchange unit coupled to the first header pipe and configured to thermally exchange the refrigerant with air, a bypass pipe configured to have the refrigerant, thermally exchanged in the first heat exchange unit, to flow therein in the air cooling operation, a first distribution pipe coupled to the bypass pipe, a second header pipe configured to have the refrigerant, passing through the bypass pipe, to flow therein in the air cooling operation, a second heat exchange unit coupled to the second header pipe and configured to thermally exchange the refrigerant with air, a second distribution pipe configured to have the refrigerant, thermally exchanged in the second heat exchange unit, to flow therein in the air cooling operation, a second hot gas pipe configured to couple the compressor and the second distribution pipe, and a second hot gas control valve disposed in the second hot gas pipe to control a flow of the refrigerant. |
| 主权项 |
1. An outdoor heat exchanger included in an air conditioner and configured to function as a condenser in an air cooling operation and as an evaporator in an air heating operation, the outdoor heat exchanger comprising:
a first header pipe configured to have a refrigerant compressed by a compressor to flow therein in the air cooling operation; a first heat exchange unit coupled to the first header pipe to receive the refrigerant from the first header pipe and configured to thermally exchange the refrigerant with air; a bypass pipe configured to have the refrigerant thermally exchanged in the first heat exchange unit to flow therein in the air cooling operation; a first distribution pipe coupled to the bypass pipe; a second header pipe configured to have the refrigerant passing through the bypass pipe to flow therein in the air cooling operation; a second heat exchange unit coupled to the second header pipe to receive the refrigerant from the second header pipe and configured to thermally exchange the refrigerant with air; a second distribution pipe configured to have the refrigerant thermally exchanged in the second heat exchange unit to flow therein in the air cooling operation; a first hot gas pipe configured to couple the compressor and the first distribution pipe; a first hot gas control valve disposed in the first hot gas pipe to control a flow of the refrigerant; a second hot gas pipe configured to couple the compressor and the second distribution pipe; a second hot gas control valve disposed in the second hot gas pipe to control a flow of the refrigerant; a bypass valve disposed in the bypass pipe configured to open or close to control the flow of the refrigerant; and a first junction point, wherein a downstream end of the first header pipe is coupled to an upstream end of the second header pipe, wherein an upstream end of the first header pipe is connected to the compressor, wherein the first junction point connects a downstream end of the bypass pipe, the downstream end of the first header pipe, and the upstream end of the second header pipe, and further comprising a check valve disposed in the first header pipe to prevent the refrigerant from flowing from the first header pipe to the second header pipe in the air cooling operation; a first expansion valve disposed in the first distribution pipe and configured to control a degree of opening of the first distribution pipe; and a second expansion valve disposed in the second distribution pipe and configured to control a degree of opening of the second distribution pipe. |
