公开(公告)号：JPH10110691A

公开(公告)日：1998-04-28

申请号：JP28468496

申请日：1996-10-07

Applicant: ZEXEL CORP

Inventor： MURAYAMA TOSHIHIRO ,  MUTA SHUNJI ,  MAKIHIRA SUSUMU ,  TAKAHASHI TOMOYASU

IPC: F04C29/12 ,  F04B39/10 ,  F04C18/344 ,  F16K15/14 ,  F04C29/00

Abstract: PROBLEM TO BE SOLVED: To disperse an abnormal pressure applied to a holder by constructing a holder of a holding part, which is bent into a circular arc pressing the inside wall of valve insertion space and is used for holding, and a regulating part, which is adjacent to the holding part, and is provided with a radius of curvature larger than that of the holding part and regulates a lift quantity of a roll valve. SOLUTION: A discharge valve 25 is constructed of a roll valve 30 and a holder 40. The holder 40 is constructed of a holding part 41, which is bent into a circular arc with a dimension slightly larger than the diameter of a valve insertion space 23 and presses the inside wall of the valve insertion space 23 over 180 degrees or more when it is inserted into the valve insertion space 23, and a regulating part 42, which is bent into a circular arc with a dimension larger than the diameter of the holding part 41 and regulates a lift quantity of the roll valve 30. In insertion, the roll valve 30 is inserted into a valve insertion space 23, and then, the holder 40 is inserted while being compressed. In this way, restoring force against the compression of the holder 40 works, so that the holder 40 is fixed in the valve insertion space 23, while the roll valve 30 is clamped and fixed between the holder 40 and the inside wall of the valve insertion space 23.

公开(公告)号：JPH1082387A

公开(公告)日：1998-03-31

申请号：JP25762896

申请日：1996-09-06

Applicant: ZEXEL CORP

Inventor： SAITO TADASHI ,  MURAYAMA TOSHIHIRO ,  TAKAHASHI TOMOYASU

IPC: F04C29/00 ,  F04C18/344

Abstract: PROBLEM TO BE SOLVED: To prevent the deformation of a vane, caused by the difference in a coefficient of thermal expansion between a coating part and a matrix, and eliminate the preservation treatment applied to the surface of the coating part, by coating the surface of the aluminium matrix with the stainless coating part. SOLUTION: A rod-like part 34a being a material of an aluminium series matrix 14a is inserted in a stainless pipe 34b being a coating part 14b, only the stainless pipe 34b is heated up to 200 deg.C or more by a heater 20 so as to be thermally expanded, the stainless pipe 34b and the aluminium series matrix 34a are inserted in the hole 21a of a die 21, and the stainless pipe 34b is pulled out while blowing cold air. Thusly, the stainless coating part 14b is coated on the surface of the aluminium matrix 14a. Hereby, the deformation of a vane 14 can be prevented which is caused by difference in the coefficient of thermal expansion between the coating part 14b and the matrix 14a, and the preservation treatment applied to the surface of the coating part 14b can be eliminated.

公开(公告)号：JPH09273489A

公开(公告)日：1997-10-21

申请号：JP11129696

申请日：1996-04-08

Applicant: ZEXEL CORP

Inventor： ONO MITSUYA ,  SAKAMOTO KATSUMI ,  NAKAJIMA NOBUFUMI ,  MURAYAMA TOSHIHIRO ,  MUTA SHUNJI ,  TAKAHASHI TOMOYASU ,  MAKIHIRA SUSUMU

IPC: F04C29/12 ,  F04B39/10 ,  F04C18/344 ,  F04C29/00

Abstract: PROBLEM TO BE SOLVED: To enable a replacement of roll valve and valve seat at the same time by installing a discharge valve assembly, which is obtained by integrally forming a roll valve with a discharge hole to be opened and closed by the roll valve, in a valve insertion space. SOLUTION: A locking projection 43 of a valve stopper 40 is fitted in a fitting hole 53 of a roll valve 50 so as to temporary assemble a valve stopper 40 and the roll valve 50. The valve stopper 40 and the roll valve 50 are inserted into a valve holder 30, and the locking projection 43 of the valve stopper 40 is fitted in a fitting hole 33 of the valve holder 30, and the valve stopper 40 and the roll valve 50, which are temporarily assembled, and the valve holder 30 are assembled, and fixed by a screw as a connecting member so as to assemble a discharge valve assembly 20, which is integrally formed with the discharge hole 31, and the discharge valve assembly 20 is installed in a valve insertion space. With this structure, at the time of replacing the roll valve 50, a valve seat surface can be replaced at the same time.

公开(公告)号：JPH08219047A

公开(公告)日：1996-08-27

申请号：JP5361395

申请日：1995-02-17

Applicant: ZEXEL CORP

Inventor： MURAYAMA TOSHIHIRO

IPC: F04C27/00 ,  F04C18/344 ,  F04C29/02

Abstract: PURPOSE: To dispense with an oil separator so as to save space and to reduce cost, and prevent the eccentricity of a cam ring, a front side housing and a rear side housing. CONSTITUTION: An oil reservoir chamber 17 for storing oil separated from high pressure refrigerant from a compression chamber is provided at the lower part of a cam ring 1, and oil feeding passages 38, 16, 28, 27 for feeding oil in the oil reservoir chamber 17 to sliding parts are respectively provided at a front head 2 and a rear head 3. There is thereby no need to dispose an oil separator at the intermediate part of a pipeline for connecting the discharge port 31 of the cam ring 1 and the inlet of a condenser, and as a result, a large space for installing the oil separator can be omitted. In addition, since only the cam ring 1 is provided with compressor fixing bolt through holes 32, 34, the eccentricity of the cam ring 1, front head 2 and rear head 3 is not generated when a compressor is fixed to the external wall of an engine by bolts.

公开(公告)号：JPH07269482A

公开(公告)日：1995-10-17

申请号：JP8221094

申请日：1994-03-29

Applicant: ZEXEL CORP

Inventor： MURAYAMA TOSHIHIRO

IPC: F04C29/00 ,  F04C18/344

Abstract: PURPOSE:To fix a metal structure in a housing by holding this metal structure in a state of being projected into an inner space by means of a solid metal at a time when a resin core, where a part of the preformed metal structure is embedded, is melted. CONSTITUTION:In a front head block 2, each of iron baffle plates 30 and 31 as an oil separating mechanism is integrally installed in a position where refrigerant gas is impacted in a discharge chamber 3 from a discharge hole 2b. In order to form the front head block 2 like this, both bodies 30a and 31a of these baffle plates 30 and 31 formed into the specified shape are embedded into a resin core 40, and this core 40 is formed so as to project both fixed parts 30b and 31b. Subsequently, the core 40 is set up in a casting mold, and for example, aluminum is cast in the mold. After the casting aluminum is solidified, the core 40 is heated and melted out. Thus, both the bodies 30a and 31a of these baffle plates 30 and 31 are in a state of being projected to an inner space 2c, through which these baffle plates 30 and 31 are integrated with the front head block 2.

公开(公告)号：JPH05288184A

公开(公告)日：1993-11-02

申请号：JP11404192

申请日：1992-04-07

Applicant: ZEXEL CORP

Inventor： MURAYAMA TOSHIHIRO

IPC: F04C29/02

Abstract: PURPOSE:To prevent the accumulation of lubricating oil in a communicating passage with a starting change-over valve disposed therein by restraining the lubricating oil from flowing in large quantity into a compression chamber from an inlet chamber through an inlet port at the starting time. CONSTITUTION:A partition 23 extended as far as above an inlet port 15 on the lower side from the lower part of a rear head 6 is provided in the rear head 6, and an inlet chamber 11 is partitioned into a space B for feeding refrigerant gas to the inlet port 15 and a space A for storing lubricating oil. Even when the lubricating oil in the inlet chamber 11 is much and the liquid surface becomes higher than the position of the lower inlet port 15, the lubricating oil is prevented from being sucked into a compression chamber through the inlet port 15 by the slight compressing action immediately after starting. As a result, the lubricating oil is not accumulated in a communicating passage with a starting change-over valve disposed therein, so that high pressure refrigerant gas is fed into a vane back pressure chamber from a discharge chamber at the starting time.

公开(公告)号：JPH0454075B2

公开(公告)日：1992-08-28

申请号：JP2994188

申请日：1988-02-10

Applicant: ZEXEL CORP

Inventor： IIO MASAHIRO ,  SUZUKI YOSHIO ,  MURAYAMA TOSHIHIRO ,  ONO MITSUYA

IPC: F04C27/00 ,  F04C18/344 ,  F04C29/00 ,  F04C29/06