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:
May. 02, 2023
Filed:
Dec. 13, 2018
Gree Electric Appliances, Inc. of Zhuhai, Zhuhai, CN;
Yusheng Hu, Zhuhai, CN;
Huijun Wei, Zhuhai, CN;
Jia Xu, Zhuhai, CN;
Zhongcheng Du, Zhuhai, CN;
Sen Yang, Zhuhai, CN;
Zhi Li, Zhuhai, CN;
Liping Ren, Zhuhai, CN;
Shebing Liang, Zhuhai, CN;
Rongting Zhang, Zhuhai, CN;
Zhengliang Shi, Zhuhai, CN;
Xixing Liu, Zhuhai, CN;
Pengkai Wan, Zhuhai, CN;
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Zhuhai, CN;
Abstract
A pump body assembly, fluid machinery, and a heat exchange device. The pump body assembly includes: at least two structure members; a cylinder disposed between the two structure members; and a piston assembly disposed in the cylinder. The piston assembly includes a piston sleeve and a piston slidably disposed in the piston sleeve; an upper end surface of the piston sleeve fits and is limited by a lower end surface of one structure member disposed above the piston sleeve, to prevent the piston sleeve from displacing along a radial direction relative to the one structure member, and effectively solving a problem in prior art that working efficiency of the pump body assembly is affected because the piston sleeve of the pump body assembly is prone to eccentrically rotate.