VARIABLE DISPLACEMENT COMPRESSOR

摘要

A variable displacement compressor includes a swash plate, a housing and a displacement control valve. The housing has a crank chamber where the swash plate is disposed, a discharge chamber and a suction chamber. The housing has plural bolt holes and is formed by separate members fastened together by plural bolts inserted through the bolt holes. The displacement control valve has a first valve member movable to connect the crank chamber and the discharge chamber, controlling the position of the first valve member to vary compressor displacement. The displacement control valve has a valve chamber and a second valve member serving to connect the crank chamber and the suction chamber in the valve chamber. The valve chamber is connected to the crank chamber by a drain passage part of which serves as the bolt hole located at the lowest of the plural bolt holes when the compressor is installed.

主权项

1. A variable displacement compressor, comprising:
a swash plate the inclination of which is variable; a housing having therein a crank chamber in which the swash plate is disposed, a discharge chamber, a suction chamber and a cylinder bore, the housing having plural bolt holes and being formed by separate members that are fastened together by plural bolts inserted through the plural bolt holes; and a displacement control valve having a first valve member movable to connect the crank chamber and the discharge chamber, the displacement control valve controlling the position of the first valve member to vary the displacement of the compressor, the displacement control valve having a valve chamber and a second valve member that serves to connect the crank chamber and the suction chamber in the valve chamber, the valve chamber being connected to the crank chamber by a drain passage, wherein part of the drain passage serves as the bolt hole located at the lowest of the plural bolt holes when the compressor is installed.