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:
Nov. 03, 2015
Filed:
Jul. 02, 2013
Fujitsu General Limited, Kawasaki-shi, Kanagawa, JP;
Hideya Tamura, Kawasaki, JP;
Takahiro Matsunaga, Kawasaki, JP;
Shinju Watanabe, Kawasaki, JP;
Keito Kawai, Kawasaki, JP;
Takashi Kimura, Kawasaki, JP;
Kotaro Toya, Kawasaki, JP;
Yasuhiro Oka, Kawasaki, JP;
Ken Nakashima, Kawasaki, JP;
FUJITSU GENERAL LIMITED, Kanagawa, JP;
Abstract
An outdoor unit for an air-conditioning apparatus includes: a compressor; an outdoor fan; a plurality of outdoor heat exchangers coupled to a plurality of indoor units; a switching member configured to switch functions of the outdoor heat exchangers to either condensers or evaporators by switching of coupling states between the compressor and the outdoor heat exchangers; and a control unit configured to calculate a low pressure saturation temperature during a cooling operation or a cooling-main operation, and configured to cause all of the plurality of outdoor heat exchangers to serve as condensers by controlling the switching member when a state in which an open-air temperature is lower than the low pressure saturation temperature continues for a predetermined time.