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:
Jun. 23, 1998
Filed:
Mar. 07, 1996
Sanyo Electric Co., Ltd., Oosaka, JP;
Abstract
In a refrigerating machine having a heat exchanger, a rated compressor for which the frequency of driving power is fixed, a power control mechanism which is disposed in the compressor and serves to return a part of the refrigerant in the cylinder under a compressing process to the cylinder under sucking process, a refrigerant return mechanism for returning a part of the refrigerant discharged from the compressor to a refrigerant suction side of the compressor, and a controller for selectively controlling the power control mechanism and the refrigerant return mechanism to make the output power variable. A pole-changeable type compressor having a pole changer may be used in place of the rated compressor having the power control mechanism, and the output power is made variable by selectively controlling the pole changer and the refrigerant return mechanism.