公开(公告)号：JPH09158868A

公开(公告)日：1997-06-17

申请号：JP34575695

申请日：1995-12-08

Applicant: ZEXEL CORP

Inventor： MURAYAMA TOSHIHIRO ,  MUTA SHUNJI ,  TAKAHASHI TOMOYASU

IPC: F01C21/10 ,  F04C18/344

Abstract: PROBLEM TO BE SOLVED: To reduce the number of part items, sealing places and cost, prevent the leakage of a coolant, and realize miniaturization, by integrating compressor constitution parts. SOLUTION: In a vane type compressor provided with a front side member 25 and a rear side member 20 arranged, respectively, on the front side and the rear side of a cam ring 1, a nearly circular arc state inlet chamber 11 with a driving shaft 7 as a center is provided on the cam ring side end surface of the rear side member 20. In addition, an inlet port 12a, for feeding a low pressure coolant gas to a compression chamber formed between vanes 14 from the inlet chamber 11 in suction stroke, is provided on the rear side end surface of the cam ring 1. By adopting this constitution, a rear side block can be eliminated to reduce the number of a part item to decrease the whole consumption quantity of aluminium system material, and also sharply reduce places to be sealed, also shorten a spindle direction length.

公开(公告)号：JPH07233793A

公开(公告)日：1995-09-05

申请号：JP4767694

申请日：1994-02-22

Applicant: ZEXEL CORP

Inventor： TAKAHASHI TOMOYASU ,  MURAYAMA TOSHIHIRO

IPC: F04C27/00 ,  F04C18/344 ,  F04C29/00 ,  F04C29/12

Abstract: PURPOSE:To prevent abrasion and seizure due to the contact of the short diameter part of a cylinder inner peripheral surface with the outer peripheral surface of a rotor by expanding side blocks and heads for forming low-pressure chambers to generally the same degree. CONSTITUTION:A high-pressure chamber 24 for introducing a high-pressure refrigerant gas from a discharge chamber 3 is axially adjacent to the short diameter part of the inner peripheral surface 1a of a cylinder 1 through a rear side block 5. Thus in high-load operation, thermal expansion with generally the same degree is applied to a front side block 2 and a front head 4 for forming the discharge chamber 3, and a rear side block 5 and a read head 6 for forming an inlet chamber 12. Thus the front side block 2 side and the rear side block side 5 of the cylinder 1 in their inside diameter are retained under a generally equal state. The short diameter part of the inner peripheral surface 1a of the cylinder 1 is not pushed to the outer peripheral surface of a rotor 7.