Compressor

A technology for compressors and compression mechanisms, applied in the field of compressors, can solve the problems of poor responsiveness, large discharge resistance, and overcompression loss, and achieves the reduction of responsiveness, the increase of flow velocity, and the suppression of overcompression loss. Effect
CN1697929AInactive Publication Date: 2005-11-16DAIKIN IND LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
DAIKIN IND LTD
Publication Date
2005-11-16
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

A discharge valve mechanism (40) has discharge openings (29a, 29b). The number of discharge openings (29a, 29b) to be placed in the open state is varied depending on the pressure and the flow rate of gas refrigerant discharged from a compression chamber (25). Accordingly, the occurrence of overcompression losses at the time of controlling of the variable displacement of a compressor is inhibited during the operation from small to large displacement. This achieves improvements in compressor operating efficiency.
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Description

technical field

[0001] The present invention relates to a compressor, in particular to the structure of the discharge valve mechanism arranged at the discharge port of the compression mechanism. Background technique

[0002] Conventionally, for example, in a refrigeration apparatus having a refrigerant circuit of a vapor compression refrigeration cycle, a compressor is used to compress refrigerant. As such a compressor, for example, a rotary compressor is known in which a compression mechanism and a motor for driving the compression mechanism are accommodated in a hermetic casing.

[0003] The above-mentioned compression mechanism has: a cylinder; and a piston that actually contacts the inner peripheral surface of the cylinder and performs eccentric rotation. A compression chamber is formed between the cylinder and the piston. A vane is attached to the compression chamber to divide the compression chamber into a low-pressure side (suction side) and a high-pressure side (co...

Claims

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