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. 22, 2025
Filed:
Jan. 10, 2022
Gree Electric Appliances, Inc. of Zhuhai, Guangdong, CN;
Fan Shi, Guangdong, CN;
Guang Ouyang, Guangdong, CN;
Gaoling Wu, Guangdong, CN;
Guojian Bai, Guangdong, CN;
Gree Electric Appliances, Inc. of Zhuhai, Guangdong, CN;
Abstract
A control method and apparatus for a compression system, and an air energy heat pump water heater. The compression system includes a compressor, a first electronic expansion valve, and a second electronic expansion valve. The method includes executing a first control step at least once, including determining a first target step number of the first electronic expansion valve; after the first electronic expansion valve is controlled to operate for a first time period according to the first target step number, determining a temperature difference between the current exhaust temperature of the compressor and the current highest water temperature of the water tank; when the temperature difference is less than a first preset value, decreasing the first target step number by a first correction step number; and controlling the first electronic expansion valve to operate according to the decreased first target step number.