Membrane pump

Abstract

A membrane pump powered by an activating element includes a chamber body. The interior of the chamber body is provided with a first chamber and a second chamber that are in fluid communication with each other. One side or both sides of the chamber body are provided with an inlet pipeline and an outlet pipeline that are in fluid communication with the first chamber and second chamber, respectively. Valves are provided on the inner wall face of same side of the first chamber and the second chamber, thereby preventing the working fluid from generating a backflow phenomenon. Furthermore, the top surface of the chamber body is provided with a membrane. An activating element abuts on the membrane for driving the membrane to swing up and down, thereby pressing the working fluid within the first chamber to circulatively flow in one direction. Via this arrangement, in addition to miniaturize the pump structure to a further extent, the working performance of the pump and the flowing amount of the working fluid are also increased.

1 . A membrane pump, comprising:
 a chamber body having an inlet pipeline and an outlet pipeline, respectively;   a membrane provided on a top surface of the chamber body; and   an activating element abutting flatly against an upper surface of the membrane, the activating element having a fixed end and a swinging end, the swinging end generating swinging action with one side thereof swinging like a sector,   wherein a large range of the swinging action generated by the activating element changes an internal volume of the chamber body, so that the working fluid remaining in the chamber body flows in the inlet pipeline and drains out of the outlet pipeline to generate a flow in one direction.   
   
   
       2 . The membrane pump according to  claim 1 , wherein the chamber body is connected correspondingly with a casing, and the casing is provided thereon with a plurality of penetrating troughs to correspond to the fixed end and the swinging end of the activating element. 
   
   
       3 . The membrane pump according to  claim 2 , wherein the fixed end is further electrically connected with a plurality of electrodes leads. 
   
   
       4 . The membrane pump according to  claim 3 , wherein the plurality of electrodes leads penetrate into the corresponding penetrating troughs. 
   
   
       5 . The membrane pump according to  claim 1 , wherein the fixed end and the outlet pipeline are located on the same side. 
   
   
       6 . The membrane pump according to  claim 1 , wherein the inlet pipeline and the outlet pipeline are provided respectively at a position of one side of the chamber body. 
   
   
       7 . The membrane pump according to  claim 1 , wherein the inlet pipeline and the outlet pipeline are provided on same side of the chamber body. 
   
   
       8 . The membrane pump according to  claim 1 , wherein the inlet pipeline and the outlet pipeline are provided on bottom of the chamber body. 
   
   
       9 . The membrane pump according to  claim 1 , wherein the inlet pipeline and the outlet pipeline are provided respectively on one side and bottom of the chamber body. 
   
   
       10 . The membrane pump according to  claim 1 , wherein the chamber body further comprises:
 a first chamber being in fluid communication with the inlet pipeline; and   a second chamber being in fluid communication with the first chamber and the outlet pipeline.   
   
   
       11 . The membrane pump according to  claim 10 , wherein a through hole is provided between the first chamber and the second chamber. 
   
   
       12 . The membrane pump according to  claim 11 , wherein a valve is provided in the second chamber at a position corresponding to that of the through hole. 
   
   
       13 . The membrane pump according to  claim 12 , wherein the second chamber is provided with a penetrating trough adjacent to the inner wall face of the through hole, the valve has a pillar and a plate, the pillar is provided in the penetrating trough and the plate exactly corresponds to the position of the through hole. 
   
   
       14 . The membrane pump according to  claim 10 , wherein a valve is provided on the inner wall face of the first chamber at a position corresponding to that of the inlet pipeline. 
   
   
       15 . The membrane pump according to  claim 14 , wherein the first chamber is provided with a penetrating trough adjacent to the inner wall face of the inlet pipeline, the valve has a pillar and a plate, the pillar is provided in the penetrating trough and the plate exactly corresponds to the position of the inlet pipeline. 
   
   
       16 . The membrane pump according to  claim 1 , wherein the activating element is a piezoelectric piece. 
   
   
       17 . The membrane pump according to  claim 1 , wherein the fixed end is electrically connected with a plurality of electrode leads.