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:
Mar. 17, 2023
Toshiba Carrier Corporation, Kanagawa, JP;
Carrier Japan Corporation, Tokyo, JP;
Abstract
An air conditioner includes an indoor unit, an outdoor unit, and a controller. The controller of an air conditioner switches between a first defrosting drive to defrost a first outdoor heat exchanger and a second outdoor heat exchanger at the same time, and a second defrosting drive to defrost the first outdoor heat exchanger after the start of defrosting of the second outdoor heat exchanger; estimates a refrigerant residue amount of the first outdoor heat exchanger and a refrigerant residue amount of the second outdoor heat exchanger; and adjusts an opening degree of the first expansion valve and an opening degree of the second expansion valve, based on the refrigerant residue amount of the first outdoor heat exchanger and the refrigerant residue amount of the second outdoor heat exchanger.