Lubricant backflow structure of compressor

Abstract

A lubricant backflow structure of a compressor includes a casing, a scrolling set, and a transmission mechanism. An oil tank is arranged under the casing, an internally longitudinal wall of which is formed as an oil backflow passage, an inlet of which is corresponded to one side of the scrolling set for receiving a lubricant, and an outlet of which is formed above the oil tank. Thereby, when a working fluid (e.g. refrigerant) enters into the casing, it won't mix with the lubricant therein, capable of reducing oil consumption and enhancing thermally exchanging efficiency of the system.

1 . A lubricant backflow structure of compressor, the compressor including a casing, a scrolling set, and a transmitting mechanism, a bottom of the casing having an oil tank,
 characterized in that an interior of a longitudinal wall of the casing is formed as an oil backflow passage, an inlet of which is corresponded to one side of the scrolling set for receiving a lubricant, and an outlet of which is formed above the oil tank.   
   
   
       2 . The lubricant backflow structure of compressor according to  claim 1 , wherein the casing includes:
 a lower casing;   a middle casing, connected above the lower casing; and   an upper casing, connected above the middle casing, and   wherein the oil backflow passage is respectively formed in the middle casing and the lower casing.   
   
   
       3 . The lubricant backflow structure of compressor according to  claim 1 , wherein the casing includes a lower casing and an upper casing connected above the lower casing, and wherein the oil backflow passage is formed in the lower casing. 
   
   
       4 . The lubricant backflow structure of compressor according to  claim 1 , wherein the casing has an inlet, at a lower position of which an outlet of the oil backflow passage is formed.