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. 24, 2018
Filed:
Jan. 22, 2014
Fujitsu General Limited, Kanagawa, JP;
Takashi Kimura, Kanagawa, JP;
Kuniko Hayashi, Wakayama, JP;
FUJITSU GENERAL LIMITED, Kanagawa, JP;
Abstract
An outdoor unit control unithas a defrosting operation condition tablethat defines an activation rotational speed Cr in accordance with a total sum of flow rate coefficients Cva that is a total sum of flow rate coefficients Cv representing capacities of indoor expansion valvesto. The outdoor unit control unitcalculates the total sum of the flow rate coefficients Cva by adding the flow rate coefficient Cv of each of the indoor expansion valvesto, and refers to the defrosting operation condition table, so as to determine the activation rotational speed Cr. Then, the outdoor unit control unitactivates a compressorat the determined activation rotational speed Cr when starting a defrosting operation, maintains this activation rotational speed Cr for a predetermined time from the start of the defrosting operation, and drives the compressor