VARIABLE DISPLACEMENT COMPRESSOR

• Main Authors: TOIDA TAKASHI, MATSUZAKI YOSHIE, TERAUCHI SATOSHI, TAGUCHI YUKIHIKO, IGUCHI TOMOHIRO
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2019
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

Provided is a variable displacement compressor capable of preventing the intrusion of foreign matter into a second control valve. A variable displacement compressor 100 comprises: a first control valve 300 that controls the opening degree of a supply passage 145; a check valve 350; a second control valve 400 that controls the opening degree of an exhaust passage 146; and a back pressure relief passage 147. The second control valve 400 includes: a back pressure chamber 410 that communicates with an intermediate supply passage 145b1; a valve chamber 420 where a valve hole 103d and an exhaust hole 431a are open and that constitutes a portion of the exhaust passage 146; a partition member 430 that partitions the back pressure chamber 410 and the valve chamber 420; and a spool 440. In a state where the first control valve 300 has closed the supply passage 145 and a valve seat side end surface 442a of a valve part 442 of the spool 440 is at the maximum distance from a valve seat 103f, an endwall side end surface 44