Claims
- 1. A reciprocating compressor comprising
- at least one cylinder;
- a piston slidably mounted in said cylinder to define a compression chamber therewith;
- an inlet valve communicating with said chamber to deliver a flow of medium thereto for compression therein; and
- an outlet valve communicating with said chamber to exhaust a compressed flow of medium therefrom;
- each said valve including a first body having a first flow passage for a flow of medium, a valve seat at one end of said passage, a second body having a recess facing said first flow passage, said second body having a second flow passage extending from said recess, a disc in said recess abutting said valve seat and extending across said first flow passage, said disc having a centrally disposed protuberance defining an abutment surface on a side opposite said first flow passage, and a round resilient diaphragm mounted in said recess and having a central thrust surface resiliently biased against said protuberance to resiliently maintain said disc in sealed relation with said valve seat.
- 2. A reciprocating compressor as set forth in claim 1 wherein said first flow passage of said inlet valve is disposed in said piston.
- 3. A reciprocating compressor as set forth in claim 2 which further comprises a retaining plate secured to said piston and having said recess, said disc and said diaphragm therein.
- 4. A reciprocating compressor as set forth in claim 1 wherein said outlet valve is disposed in an end plate of said cylinder.
- 5. A reciprocating compressor as set forth in claim 1 wherein said disc is made of polyether etherketone.
- 6. A reciprocating compressor as set forth in claim 1 wherein said recess has at least one local widening on a periphery thereof.
Priority Claims (1)
Number |
Date |
Country |
Kind |
02209/88 |
Jun 1988 |
CHX |
|
Parent Case Info
This is a division of application Ser. No. 363,632 filed June 8, 1989, now U.S. Pat. No. 4,936,327 issued June 26, 1990.
US Referenced Citations (10)
Foreign Referenced Citations (3)
Number |
Date |
Country |
427276 |
Sep 1934 |
GBX |
1530582 |
Nov 1978 |
GBX |
2109094 |
May 1983 |
GBX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
363632 |
Jun 1989 |
|