Medium-frequency hermetically sealed refrigerant compressor capable of unloading during start

Abstract

A medium-frequency hermetically sealed refrigerant compressor capable of unloading during start, comprising: an electric connector ( 2 ), a front end socket ( 1 ), a rear end socket ( 6 ), a barrel ( 7 ), a medium-frequency motor ( 3 ) disposed in the barrel ( 7 ), a movable disc ( 4 ), a motion transmission sleeve ( 8 ), a main shaft ( 9 ), a clutch coil ( 10 ) and a clutch friction plate ( 11 ); the front and back ends of the barrel ( 7 ) are respectively connected to the front end socket ( 1 ) and the rear end socket ( 6 ) the barrel ( 7 ) has a stator disc ( 5 ) fixed therein cooperating with the movable disc ( 4 ); the movable disc ( 4 ) and the stator disc ( 5 ) are sleeved on one side of the main shaft ( 9 ), and the clutch friction plate ( 11 ) and the clutch coil ( 10 ) are sleeved on another side of the main shaft ( 9 ); the movable disc ( 4 ) and the clutch friction plate ( 11 ) are fixed on a side surface of the main shaft ( 9 ); the output shaft of the medium-frequency motor ( 3 ) is connected to the clutch coil ( 10 ) via the motion transmission sleeve ( 8 ); the electric connector ( 2 ) is fixed on the barrel ( 7 ); and the electric connector ( 2 ) is connected to the clutch coil ( 10 ). The compressor achieves a low current start, and reduces the impact against the on-board power supply.

What is claimed is: 
     
         1 . A medium-frequency hermetically sealed refrigerant compressor capable of unloading during start comprises an electric connector ( 2 ), a front end socket ( 1 ), a rear end socket ( 6 ), a barrel ( 7 ), a medium-frequency motor ( 3 ) provided inside the barrel ( 7 ), a movable disc ( 4 ), a motion transmission sleeve ( 8 ), a main shaft ( 9 ), a clutch coil ( 10 ) and a clutch friction plate ( 11 );
 a front end and a rear end of the barrel ( 7 ) are connected with the front end socket ( 1 ) and the rear end socket ( 6 ) respectively; a stator disc ( 5 ) cooperating with the movable disc ( 4 ) is fixed in the barrel ( 7 ); the movable disc ( 4 ) and the stator disc ( 5 ) are sleeved on one side of the main shaft ( 9 ); the clutch friction plate ( 11 ) and the clutch coil ( 10 ) are sleeved on another side of the main shaft ( 9 ); the movable disc ( 4 ) and the clutch friction plate ( 11 ) are fixed on a side surface of the main shaft ( 9 ); an output shaft of the medium-frequency motor ( 3 ) is connected with the clutch coil ( 10 ) via the motion transmission sleeve ( 8 ); the electric connector ( 2 ) is fixed on the barrel ( 7 ); the electric connector ( 2 ) is connected with the clutch coil ( 10 ).   
     
     
         2 . The medium-frequency hermetically sealed refrigerant compressor capable of unloading during start according to  claim 1 , wherein the stator disc ( 5 ) is fixed in the barrel ( 7 ) by using screws. 
     
     
         3 . The medium-frequency hermetically sealed refrigerant compressor capable of unloading during start according to  claim 1 , wherein a seal ring is provided between the stator disc ( 5 ) and the side surface of the main shaft ( 9 ).