The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2008
Filed:
Sep. 28, 2003
Roy J. Doepker, Lima, OH (US);
Mark Bass, Wilder, KY (US);
James F. Fogt, Sidney, OH (US);
Jeffrey A. Huddleston, Sidney, OH (US);
Roy J. Doepker, Lima, OH (US);
Mark Bass, Wilder, KY (US);
James F. Fogt, Sidney, OH (US);
Jeffrey A. Huddleston, Sidney, OH (US);
Emerson Climate Technologies, Inc., Sidney, OH (US);
Abstract
A scroll compressor includes a capacity modulation system. The capacity modulation system has a piston that is connected to the non-orbiting scroll that disengages the non-orbiting scroll from the orbiting scroll when a pressure chamber is placed in communication with the suction chamber of the compressor. The non-orbiting scroll member moves into engagement with the orbiting scroll when the chamber is placed in communication with the discharge chamber. The engagement between the two scrolls is broken when the pressure chamber is placed in communication with fluid from the suction chamber. A solenoid valve controls the communication between the pressure chamber and the suction chamber. By operating the valve in a pulsed width modulated mode, the capacity of the compressor can be infinitely varied between zero and one hundred percent.