Energy-efficient vane pump

Abstract

Disclosed is an energy-efficient vane pump which comprises a pump body. A drive shaft is arranged within the pump body. A rotor is fitted over the drive shaft. A stator is arranged besides the rotor. A plurality of vane grooves are arranged on the rotor. The vanes are evenly distributed between the rotor and the stator. A root end of the vane is located within the vane groove, and a tip end of the vane faces the stator. Side plates are arranged on both sides of the rotor. Each of the side, plate is provided with a high-pressure chamber and an oil outlet chamber. A communication channel is located on the side plate between the high-pressure chamber and the oil outlet chamber. The side plate is provided with a partition structure in the communication channel between the high-pressure chamber and the oil outlet chamber.

What is claimed is: 
     
         1 . An energy-efficient vane pump, comprising a pump body;
 wherein a drive shaft is arranged within the pump body; a rotor is fitted over the drive shaft; a stator is arranged besides the rotor; a plurality of vane grooves are arranged on the rotor; the vanes are evenly distributed between the rotor and the stator; a root end of the vane is located within the vane groove, and a tip end of the vane faces the stator; side plates are arranged on both sides of the rotor; each of the side plate is provided with a high-pressure chamber and an oil outlet chamber; a communication channel is located on the side plate between the high-pressure chamber and the oil outlet chamber; an oil cavity is formed by the rotor, the stator, the vanes, and the side plates; the oil cavity comprises a pressure oil chamber whose volume changes from large to small with the rotation of the rotor, and an oil suction chamber whose volume changes from small to large with the rotation of the rotor; the tip end of the vane is provided with a U-shaped top groove; a top pressure chamber is formed by the vane top groove, the stator, and the side plates; the top pressure chamber is in communication with the oil pressure chamber and the oil suction chamber; a root pressure chamber is formed by the vane root end, the vane grooves, and the side plates; the root pressure chamber is in communication with the high-pressure chamber; the oil outlet chamber is in communication with the oil pressure chamber; characterized in that the side plate is provided with a partition structure in the communication channel between the high-pressure chamber and the oil outlet chamber to block the communication between the high-pressure chamber and the oil outlet chamber; the vane is provided with a through hole; two ends of the through hole is in communication with the top pressure chamber, the root pressure chamber; each of the two side surfaces of the vane facing the side plates is provided with a side groove; the side groove is in communication with the top, pressure chamber, the root pressure chamber.   
     
     
         2 . The energy-efficient vane pump according to  claim 1 , wherein there are two through holes in the vane; the two through holes are symmetrical in a length direction of the vane. 
     
     
         3 . An energy-efficient vane pump, comprising a pump body:
 wherein a drive shaft is arranged within the pump body; a rotor is fitted over the drive shaft; a stator is arranged besides the rotor; a plurality of vane grooves, are arranged on the rotor; the vanes are evenly distributed between the rotor and, the stator; a root end of the vane is located within the vane groove, and a tip end of the vane faces the stator; side plates are arranged on both sides of the rotor; each of the side plate is provided, with a high-pressure chamber and an oil outlet chamber; a communication channel is located on the side plate between the high-pressure chamber and the oil outlet chamber; an oil cavity is formed by the rotor, the stator, the vanes, and the side plates; the oil cavity comprises a pressure oil chamber whose volume changes from large to small with the rotation of the rotor, and an oil suction chamber whose volume changes from small to large with the rotation of the rotor; the tip end of the vane is provided with a U-shaped top groove; a top pressure chamber is formed by the vane top groove, the stator, and the side plates; the top pressure chamber is in communication with the oil pressure chamber and the oil suction chamber; a root pressure chamber is formed by the vane root end the vane grooves, and the side plates; the root pressure chamber is in communication with the high-pressure chamber; the oil outlet chamber is in communication with the oil pressure chamber; characterized in that the side plate is provided with a flow restricting structure arranged in the communication channel between the high-pressure chamber and the oil outlet chamber for limiting the flow; the vane is provided with a through hole; two ends of the through hole is in communication with the top pressure chamber, the root pressure chamber; each of the two side surfaces of the vane facing the side plates is provided with a side groove; the side groove is in communication with the top pressure chamber, the root pressure chamber.   
     
     
         4 . The energy-efficient vane pump according to  claim 3 , wherein there are two through holes in the vane; the two through holes are symmetrical in a length direction of the vane.