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:
Jul. 01, 2025
Filed:
Aug. 06, 2018
Daikin Industries, Ltd., Osaka, JP;
Miki Yamada, Osaka, JP;
Junichi Shimoda, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
An air conditioning system () has: a heat pump unit () that heats a room with a vapor compression refrigerant circuit (); a separate heat source unit () that heats a room with a heat source separate from the heat pump unit (); and a control unit () that controls an operation of the heat pump unit () and the separate heat source unit (). As a refrigerant, a flammable refrigerant is sealed in the refrigerant circuit (). When the flammable refrigerant is leaking, the control unit () heats the room with the separate heat source unit () in both cases where a heat pump heating condition is satisfied and where a separate heat source heating condition is satisfied.