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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.:

US 10168066 B1

PDFFull Text
Date of Patent:
Jan. 01, 2019

Filed:

Jan. 22, 2014

Air conditioner with outdoor fan control in accordance with suction pressure and suction superheating degree of a compressor

Applicant:

Fujitsu General Limited, Kanagawa, JP;

Inventors:

Takashi Kimura, Kanagawa, JP;

Kuniko Hayashi, Wakayama, JP;

Assignee:

FUJITSU GENERAL LIMITED, Kanagawa, JP;

Attorney:

Rankin, Hill & Clark LLP

Primary Examiner:

Henry Crenshaw

Int. Cl.
CPC ...
F24F 11/00 (2018.01); F25B 13/00 (2006.01); F24F 3/06 (2006.01); F25B 47/02 (2006.01); F25B 41/06 (2006.01); F25B 49/02 (2006.01); F24F 11/77 (2018.01); F24F 11/42 (2018.01);
U.S. Cl.
CPC ...
F24F 11/0079 (2013.01); F24F 3/065 (2013.01); F24F 11/77 (2018.01); F25B 13/00 (2013.01); F25B 41/062 (2013.01); F25B 47/025 (2013.01); F25B 49/02 (2013.01); F24F 11/42 (2018.01); F25B 2313/005 (2013.01); F25B 2313/006 (2013.01); F25B 2313/0233 (2013.01); F25B 2313/0294 (2013.01); F25B 2313/02741 (2013.01); F25B 2313/0315 (2013.01); F25B 2600/2513 (2013.01); F25B 2700/1931 (2013.01); F25B 2700/1933 (2013.01); F25B 2700/2106 (2013.01); F25B 2700/21151 (2013.01); F25B 2700/21152 (2013.01); Y02B 30/746 (2013.01);
Abstract

A CPUreceives suction pressure PL and a suction temperature Te, calculates a saturation temperature corresponding to the evaporation pressure Tsby using the suction pressure PL, and calculates a suction superheating degree SHs of a compressorby using the suction temperature Te and the saturation temperature corresponding to the evaporation pressure Ts. The CPUreads a current opening degree De of an outdoor expansion valve. Next, the CPUuses the received suction pressure PL and opening degree De of the outdoor expansion valveand the calculated suction superheating degree SHs, refers to an outdoor fan control table, and determines a control aspect of an outdoor fan. The CPUexecutes control of the outdoor fanin accordance with the control aspect that is determined by referring to an outdoor fan control table

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