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:
Feb. 21, 2023
Filed:
Aug. 09, 2019
Qingdao Haier Air-conditioning Electronic Co., Ltd, Qingdao, CN;
Haier Smart Home Co., Ltd., Qingdao, CN;
Kun Yang, Qingdao, CN;
Yunhua Ma, Qingdao, CN;
Longling Ge, Qingdao, CN;
Yanyao Lei, Qingdao, CN;
Chao Sun, Qingdao, CN;
Changyou Xiong, Qingdao, CN;
Zhiyang Gao, Qingdao, CN;
Yabin Sui, Qingdao, CN;
Zhigao Cao, Qingdao, CN;
Shouyu Liu, Qingdao, CN;
Qingdao Haier Air-conditioning Electronic Co., Ltd, Qingdao, CN;
Haier Smart Home Co., Ltd., Qingdao, CN;
Abstract
A method of judging lack-of-freon in an air conditioner and an air conditioner control method. The control method includes: acquiring outflow air temperatures at the first air outlet and the second air outlet, and calculating a temperature difference; comparing the temperature difference with a preset temperature difference threshold; and adjusting an opening degree of the expansion valve accordingly. In the method, the opening degree of the expansion valve can be automatically adjusted according to a result of temperature comparison to compensate for the flow rate of freon, so as to improve the cooling or heating efficiency of the air conditioning system and realize the adaptive adjustment of the air conditioner, thereby ensuring the cooling or heating efficiency of the system even if the system lacks freon to a slight extent and effectively reducing energy consumption. The judging method has a higher accuracy of judging result, and is easier to implement.