公开(公告)号：JP2000009075A

公开(公告)日：2000-01-11

申请号：JP18973398

申请日：1998-06-19

Applicant: ZEXEL CORP

Inventor： HIRAO YOSHITERU ,  OSAWA HITOSHI

IPC: F04C29/00 ,  F04C18/344 ,  F04C28/28 ,  F04C29/10

Abstract: PROBLEM TO BE SOLVED: To lower manufacturing cost of a refrigerant compressor, to lighten its weight, and reduce its machining and assembling man-hours. SOLUTION: This refrigerant compressor comprises a front side block, a front head 5 disposed next to the front side block, and a discharge chamber 10 partitioned with the front side block and the front head 5, while the front side block and the front head 5 are integrally joined together such that a front side end face of the front side block abuts on a rear side end face of the front head 5 through a gasket. In this refrigerant compressor, a groove 40 is formed on the rear side end face of the front head 5. Thereby, when the front side block and the front head 5 are integrally joined together, a surface contact pressure acting on the rear side end face of the front head 5 is partially reduced. Accordingly, when a pressure in the discharge chamber 10 abnormally increases by accident in compression operation, a refrigerant gas within the discharge chamber 10 can escape into the atmosphere through a portion having a small surface contact pressure, i.e., the groove 40. As a result, a pressure within the discharge chamber 10 is kept a prescribed value or less so that damage of the compressor is prevented.

公开(公告)号：JPH09250478A

公开(公告)日：1997-09-22

申请号：JP8767696

申请日：1996-03-14

Applicant: ZEXEL CORP

Inventor： ONO MITSUYA ,  OSAWA HITOSHI

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

Abstract: PROBLEM TO BE SOLVED: To prevent a delivery valve from being damaged and abnormal noises from being generated due to the delivery valve. SOLUTION: A delivery passage to communicate with a rear head side close part of a delivery space 1a and a blow-out chamber 10 is constituted by a communicating route 1b, a delivery corridor 31 to communicate with the delivery passage 31, and a communicating groove 30 to communicate with the communicating route 1b and the delivery passage 31. The high-pressure gas blown out from a delivery port 16a near a front side member 25 directly flows the delivery chamber 10, the high-pressure coolant gas blown out from a delivery port 16b near the rear side member 20 flows the delivery chamber 10 through the delivery route 31, therefore, the blow-out resistance of the coolant gas blown out from the delivery port 16b near the rear side member 20 becomes small, and the coolant gas in the delivery space 1a flows the delivery chamber 10 smoothly.

公开(公告)号：JPH09256977A

公开(公告)日：1997-09-30

申请号：JP9594696

申请日：1996-03-25

Applicant: ZEXEL CORP

Inventor： ONO MITSUYA ,  OSAWA HITOSHI ,  MURAYAMA TOSHIHIRO

IPC: F04C29/02 ,  F04C18/344 ,  F04C28/18 ,  F04C29/00

Abstract: PROBLEM TO BE SOLVED: To increase the capacity of a discharging chamber without enlarging a front head, and realize improvement of oil separating function and reduction of high pressure pulsation. SOLUTION: A plurality of high pressure spaces 30a to 30h which are directly communicated with a discharging chamber are arranged on the front side end surface of a cam ring 1. The high pressure spaces 30a to 30h constitute a part of the discharging chamber. Since the capacity of the discharging chamber is increased for the capacity of the high pressure spaces 30a to 30h, the capacity of the discharging chamber can be increased without enlarging a front head.

公开(公告)号：JPH09287583A

公开(公告)日：1997-11-04

申请号：JP11979996

申请日：1996-04-17

Applicant: ZEXEL CORP

Inventor： ONO MITSUYA ,  SUZUKI HIROYUKI ,  OSAWA HITOSHI

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

Abstract: PROBLEM TO BE SOLVED: To reduce manufacturing cost while dispensing with a guide cylinder of a suction valve, and improve sealability of the suction valve, when closed thereof, without complicated processes. SOLUTION: A valve housing chamber 34 is formed on the way between a suction port 6a and a suction chamber 11, while a coil spring 33 is directly housed in the valve housing chamber 34 without a guide cylinder. Since the guide cylinder is not used, a lower end face of a bush 31 is not affected, which may be deformed otherwise due to welding between the guide cylinder and the bush 32. It is thus unnecessary to process the lower end surface of the bush 31 afterward for obtaining the flatness.