# US 2013/0156624 A1 · Slide valve for screw compressor

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- Number: US 2013/0156624 A1
- Document ID: US20130156624A1
- Status: Published application
- Kind: A1
- Application number: 13/328,597
- Filed: 2011-12-16
- Published: 2013-06-20
- Earliest claimed: 2011-12-16
- Assignees: Gardner-Denver Company
- Inventors: Neville D. Kapadia; Michael E. Terwelp; Bernard Dale Conley; Timothy Keene Heimonen
- Web page: https://patentgrep.com/patent/US20130156624A1

## CPC

- F04C 18/16: with helical teeth, e.g. chevron-shaped, screw type {(for non-parallel axes of movement F04C18/48)}
- F04C 28/12: using sliding valves
- F04C 28/14: using rotating valves
- F04C: ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS

## Abstract

An assembly of a compressor for pressurizing a fluid includes a main housing having a portion being substantially planar. The housing defines at least two parallel intersecting bores. At least two rotors are journaled for rotation within the bores. A plurality of vent channels in the main housing extend outwardly from at least one bore through the portion being substantially planar. The vent channels are configured for the fluid to flow through the vent channels. A slide valve assembly is operably connected to the housing proximate the plurality of vent channels. The slide valve assembly has a valve plate wherein the valve plate has a substantially planar side that is sealingly engaged with the planar portion of the main housing. The valve plate is positioned into one of a plurality positions relative to the vent channels

## Claims

### Claim 1

An assembly of a compressor for pressurizing a fluid comprising:
a main housing having a portion being substantially planar;
at least two parallel intersecting bores;
at least two rotors journaled for rotation within said bores;
a plurality of vent channels in said main housing extending outwardly from at least one bore through said portion being substantially planar; the vent channels are configured for the fluid to flow through said vent channels;
a slide valve assembly operably connected to said housing proximate said plurality of vent channels, said slide valve assembly having a valve plate;
wherein said valve plate has a substantially planar side that is sealingly engaged with said planar portion of said main housing; and
wherein said valve plate is positioned into one of a plurality positions relative to said vent channels,. wherein said plurality of positions are selected from a group consisting of: a fully open position, a fully closed position, and an intermediate position.

### Claim 2 (depends on 1)

The assembly of the compressor for pressurizing a fluid of claim 1 wherein said valve assembly further comprises a motor.

### Claim 3 (depends on 1)

The assembly of the compressor for pressurizing a fluid of claim 1 wherein said valve plate comprises a side opposite said planar side, said side opposite has at least one recess and one rib bordering said recess.