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US 12,228,315 B2Granted
Heat pump
AssigneeYanmar Power Technology Co., Ltd.
InventorsNorihiro Okuda, Hideshi Okada, Sachie Tsujikawa, Terunori Aikawa, Tomoya Yoshimura
Life of this patent
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Abstract
A heat pump is provided with a compressor; an oil separator provided on a discharge path of the compressor; an accumulator connected to the compressor via a suction path; and a bypass circuit configured to supply a gas refrigerant separated by the oil separator. The bypass circuit is connected to the suction path.
Claims5
A heat pump comprising:
- a compressor;
- an oil separator provided in a discharge path of the compressor;
- an accumulator connected to the compressor via a suction path;
- and
- a first piping configured to deliver oil separated with the oil separator to the compressor, wherein:
- the heat pump comprises a bypass circuit configured to deliver a gaseous refrigerant separated with the oil separator,
- the bypass circuit is connected to the suction path,
- the first piping is connected to the suction path above the accumulator in a vertical direction,
- the suction path has an upward extending part extending upward, a downward extending part extending downward, and a connection part to connect the upward extending part and the downward extending part,
- the upward extending part, the connection part, and the downward extending part are provided in the suction path in a stated order from an upstream side along a delivery direction of a refrigerant, and
- the first piping is connected to the upward extending part.
8 more elements
Dependencies are inferred from the claim text.