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:
Dec. 10, 2019
Filed:
Dec. 17, 2015
Daikin Industries, Ltd., Osaka-shi, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka-Shi, Osaka, JP;
Abstract
In an air conditioning device () to which an outdoor unit () and indoor units () are connected, when a flow rate of a gaseous refrigerant in a gas main pipe () is lower than a lower limit flow rate in main pipe, an amount of refrigerating machine oil accumulated in the gas main pipe () is calculated. When gas branch pipes () include a gas branch pipe () having a flow rate lower than a lower limit flow rate in branch pipe even though the flow rate of the gaseous refrigerant in the gas main pipe () is higher than the lower limit flow rate in main pipe, an amount of the machine oil accumulated in the gas branch pipe () is calculated. When the amounts are integrated and the integrated value exceeds a set amount, oil collecting operation is performed.