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:
Jun. 28, 2022
Filed:
Jul. 13, 2018
Daikin Industries, Ltd., Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
An air conditioning system capable of reducing noise incidental to gas-liquid two-phase transfer is provided. The air conditioning system () performs a refrigeration cycle in a refrigerant circuit (RC) including an outdoor unit (), a plurality of indoor units (), and a liquid-side connection pipe (LC) connecting the outdoor unit () and the indoor units (). The air conditioning system () includes a second outdoor control valve (, electric valve) decompressing the refrigerant flowing in the refrigerant circuit (RC) in accordance with an opening degree, an operating-capacity variation detection portion (, detection portion) detecting change of the number of operating units in accordance with device information, and a device control portion (, control portion) controlling a state of the second outdoor control valve (). The device control portion () executes first control (feed-forward control) when the change of the number of operating units is detected by the operating-capacity variation detection portion (), and adjusts the opening degree of the second outdoor control valve () to suppress a rise of pressure of the refrigerant flowing into the operating unit.