UNLOADER SYSTEM AND METHOD FOR A COMPRESSOR - EMERSON CLIMATE TECHNOLOGIES

Title:

UNLOADER SYSTEM AND METHOD FOR A COMPRESSOR

Document Type and Number:

WIPO Patent Application WO/2010/088271

Kind Code:

A3

Abstract:

An apparatus is provided and may include a compression mechanism, a valve plate including a plurality of ports in fluid communication with the compression mechanism, and a header disposed adjacent to the valve plate. A plurality of cylinders may be disposed within the header and a plurality of pistons may be respectively disposed in the plurality of cylinders and may be movable between a first position separated from the valve plate and a second position engaging the valve plate. A chamber may be disposed within each of the cylinders and may receive a pressurized fluid in a first mode to move the piston into the second position and may vent the pressurized fluid in a second mode to move the piston into the first position. One of the chambers may include a smaller volume than the other of the chambers.

Inventors:

WALLIS FRANK S (US)
BERGMAN ERNEST R (US)

Application Number:

PCT/US2010/022230

Publication Date:

November 25, 2010

Filing Date:

January 27, 2010

Export Citation:

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Assignee:

EMERSON CLIMATE TECHNOLOGIES (US)
WALLIS FRANK S (US)
BERGMAN ERNEST R (US)

International Classes:

F04B27/00; F04B25/00; F04B27/24; F04B53/10

Foreign References:

US20050025648A1	2005-02-03
JPH0693971A	1994-04-05
JP2008208757A	2008-09-11
JP2005256793A	2005-09-22

Other References: