Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Katsuhiko Ohshiro

Shigeru Suzuki

Yasushi Watanabe

Ichiro Kasugai

A variable displacement vane compressor for an air conditioning system used in an automobile has a cylinder assembly having a bore which receives a rotor to form at least one crescent or compressing chamber between the rotor and the bore. The crescent chamber receives a refrigerant which is returned from the air conditioning system. The rotor has vanes which are extendably fitted therein so that the free end of the vanes are in contact with the circumferential inner surface of the bore during the rotation of the rotor, whereby when the vane passes through the crescent chamber, the refrigerant received therein can be compressed. The amount of the refrigerant introduced into the crescent chamber is adjustable in response to a change of a cooling load at the air conditioning system.

Variable displacement vane compressor

A vane type compressor comprising a main housing with a cylinder, a front side plate covering one end of the cylinder, a front housing over the front side plate for forming a suction chamber, and a rotor inserted in the cylinder with a rotatable drive shaft extending through bosses of the front side plate and the front housing. A seal is arranged in the boss of the housing, and a check valve is arranged in the front housing at the inlet thereof. To guide the fluid in the suction chamber to the seal, to improve the lubrication of the seal, a pair of guide walls are provided on opposite sides of the check valve and between the check valve and the suction ports to constitute a passage directed to the seal. Also, a pair of ribs is extended from the front side plate toward the seal to constitute a gap, the gap overlapping the passage.

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Kariya, Japan

Katsuhiko Ohshiro