Title:
ROTARY COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2011/110019
Kind Code:
A1
Abstract:
A rotary compressor is provided with a motor portion (22) and a compression mechanism portion (21) within a hermetic housing (1). The compression mechanism portion (21) includes more than one cylinder (23). In the cylinder (23) is provided a cylinder compression chamber (24) in which a piston (28) is accommodated. A leading end of a vane is in contact with the periphery of the piston and divides the cylinder compression chamber into a high-pressure chamber (31a) and a low-pressure chamber (31b). A crankshaft (27) engages with the piston to drive it. A main bearing (25) and a secondary bearing (26) are used to support the crankshaft and are installed on the cylinder. The main bearing is connected with a main shaft (34a) of the crankshaft, and the secondary bearing (26) is connected with a secondary shaft (34b) of the crankshaft. In the position of at least one of two ends (36) of the piston adjacent to one's end face is provided a circumferential groove (37) opening toward the inside of the piston. A flexible thin wall (38) is provided on the outer side of the circumferential groove. The compressor can adjust the clearance forming between two ends and the main and secondary bearings, respectively, by the pressure difference between the inside and outside of the piston, and thereby reduces leakage loss and increases energy consumption.
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Inventors:
XIAOJIN, Zhengxiong (LIU Xique, PengLai Road BeiJiao, ShunDe Distric, Foshan Guangdong 1, 528311, CN)
小津政雄 (中国广东省佛山市顺德北滘蓬莱路刘喜鹊, Guangdong 1, 528311, CN)
小津政雄 (中国广东省佛山市顺德北滘蓬莱路刘喜鹊, Guangdong 1, 528311, CN)
Application Number:
CN2010/077128
Publication Date:
September 15, 2011
Filing Date:
September 20, 2010
Export Citation:
Assignee:
GUANGDONG MEIZHI REFRIGERATION EQUIPMENT CO., LTD. (LIU Xique, PengLai Road BeiJiao, ShunDe Distric, Foshan Guangdong 1, 528311, CN)
广东美芝制冷设备有限公司 (中国广东省佛山市顺德区北滘蓬莱路刘喜鹊, Guangdong 1, 528311, CN)
XIAOJIN, Zhengxiong (LIU Xique, PengLai Road BeiJiao, ShunDe Distric, Foshan Guangdong 1, 528311, CN)
广东美芝制冷设备有限公司 (中国广东省佛山市顺德区北滘蓬莱路刘喜鹊, Guangdong 1, 528311, CN)
XIAOJIN, Zhengxiong (LIU Xique, PengLai Road BeiJiao, ShunDe Distric, Foshan Guangdong 1, 528311, CN)
International Classes:
F04C27/00; F04C18/356; F04C29/00
Attorney, Agent or Firm:
YOGO PATENT & TRADEMARK AGENCY LIMITED COMPANY (Room 3912, Block B Sinopec TowerNo. 191, Tiyuxi Road, TianHe Distric, Guangzhou Guangdong 3, 510623, CN)
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Claims: