Variable displacement compressor capable of reducing generation of a noise
AssigneeSanden Corporation
InventorsMasaaki Fujita, Masayoshi Tsukagoshi, Kazuihiko Takai
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Abstract
In a variable displacement compressor of a piston type, a valve body (34) is movably placed adjacent to a main channel (32) communicating a suction port (26) with a suction chamber (24). The valve body is for variably controlling an opening area of the main channel. An air damper (38) is coupled to the valve body to damp vibration of the valve body. In addition, a bypass channel (39) is formed outside of the air damper to communicate the suction port with the suction chamber.
Claims10
A variable displacement compressor of a piston type, comprising:
- a suction port;
- a suction chamber;
- a main channel communicating said suction port with said suction chamber;
- a valve body movably placed adjacent to said main channel for variably controlling an opening area of said main channel;
- an air damper coupled to said valve body for damping vibration of said valve body;
- and
- a bypass channel formed outside of said air damper to communicate said suction port with said suction chamber.
A variable displacement compressor of a piston type, comprising:
- a suction port;
- a suction chamber;
- a main channel communicating said suction port with said suction chamber;
- a valve body movably placed adjacent to said main channel for variably controlling an opening area of said main channel;
- an air damper coupled to said valve body for damping vibration of said valve body;
- a bypass channel formed outside of said air damper to communicate said suction port with said suction chamber;
- a compressor housing defining said suction port and said suction chamber;
- and
- a valve case fixed to said compressor housing and defining said main channel, said valve body being movably held by said valve case, said air damper being formed between said valve case and said valve body.
A variable displacement compressor of a piston type, comprising:
- a suction port;
- a suction chamber;
- a main channel communicating said suction port with said suction chamber;
- a valve body movably placed adjacent to said main channel for variably controlling an opening area of said main channel;
- an air damper coupled to said valve body for damping vibration of said valve body;
- a bypass channel formed outside of said air damper to communicate said suction port with said suction chamber;
- a compressor housing defining said suction port and said suction chamber;
- and
- a valve case fixed to said compressor housing and defining said main channel, said valve body being movably held by said valve case,
- wherein said suction port is cylindrical and extends in a predetermined direction, said valve case being placed in said suction port and having a cylindrical wall extending in said predetermined direction and a bottom wall connected to a suction chamber side of said cylindrical wall, said main channel being formed to said cylindrical wall, said valve body being fitted inside said cylindrical wall to be movable in said predetermined direction, said return spring being interposed between said valve body and said bottom wall to urge said valve body towards an open end of said cylindrical wall, said valve case having a stopping portion for stopping said valve body against said return spring, said air damper being formed between said valve body and said bottom wall to serve in said predetermined direction.
Dependencies are inferred from the claim text.