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:
Aug. 03, 2010
Filed:
Nov. 21, 2005
Masaaki Takegami, Osaka, JP;
Satoru Sakae, Osaka, JP;
Kenji Tanimoto, Osaka, JP;
Daiken Industries, Ltd., Osaka, JP;
Abstract
In a refrigeration system, a first non-inverter compressor (B) backs up one of an inverter compressor (A) and a second non-inverter compressor (C) by switching of a third four-way selector valve (C). The refrigeration system includes: a suction pressure detection section () for detecting the suction pressure of the first non-inverter compressor (B) after the issue of a switching command to the third four-way selector valve (C); a command holding section () for, when the detected pressure of the suction pressure detection section () becomes lower than a predetermined value, determining that the third four-way selector valve (C) has malfunctioned and holding the switching command; and a compressor standby section () for, upon the command holding section () holding the switching command, stopping the first non-inverter compressor (B) and putting it into standby for a predetermined time.