MEMBRANE PUMP DEVICE
A membrane pump device powered by an activating element includes a chamber body and a second chamber body. The interior of the chamber body is provided with a chamber. Both sides of the chamber body are provided with an inlet pipeline and an outlet pipeline that are in fluid communication with the aforementioned chamber, respectively. A valve is provided on the inner wall face of the 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 chamber to circulatively flow in one direction. Finally, the second chamber body is in fluid communication with the chamber body. The interior of the second chamber body is provided with another valve. 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. Field of the Invention
The present invention relates to a membrane pump, and in particular to a membrane pump which can be applied to a fluid delivery or circulation system.
2. Description of Prior Art
As shown in
However, such kind of piezoelectric pump has some drawbacks. First of all, both the inlet pipeline 101 and the outlet pipeline 102 are provided on the bottom surface of the chamber body 10 so as to miniaturize the structure itself to a larger extent than the conventional structure, however, it is difficult to design the position of the pipeline to a further reduced extent. Therefore, it is difficult for such a structure to be applied to a further thinned space, such as the current notebook or miniaturized biological and medical instruments. Furthermore, the activating element 104 swings in a manner that the middle portion thereof generates an up-and-down swinging action. When the activating element 104 is pressed, it simultaneously drives the membrane 103 to press the working fluid within the chamber body 10 downwardly, so that the working fluid can flow toward both sides. Although the check valves 20, 20a are provided respectively on the mouths of the inlet pipeline 101 and the outlet pipeline 102 so as to prevent the working fluid from entering the inlet pipeline 101 and generating a so-called backflow phenomenon, in practice, only the middle portion of the activating element 104 acts as the swinging region, causing the swinging range of the activating element 104 too small. Therefore, during each swinging action, the amount of the fluid entering or draining from the chamber body 10 is small, which is the primary drawback of the pump structure.
SUMMARY OF THE INVENTIONTherefore, in view of the above drawbacks, the present invention is to provide a membrane pump device, in which one side of an activating element is used to swing like a sector, so that a larger range of up-and-down swinging action can be obtained to press the working fluid within the pump, thereby forcing the working fluid to flow in one direction. Via this arrangement, in addition to compact the pump to a further thinned extent, the mode of the one-side and large-range swinging action can cooperate with the flowing direction of the fluid, thereby improving the working efficiency of the pump device and the circulation system thereof.
In order to achieve the above objects, the present invention provides a membrane pump device that is constituted of a chamber body and a second chamber body. The interior of the chamber body is provided with a chamber. Both sides of the chamber body are provided with an inlet pipeline and an outlet pipeline that are in fluid communication with the aforementioned chamber, respectively. A valve is provided on the inner wall face of the 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 chamber to circulatively flow in one direction. Finally, the second chamber body is in fluid communication with the chamber body. The interior of the second chamber body is provided with another valve. 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.
With reference to
With reference to
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Moreover, the inlet pipeline 12 and the outlet pipeline 13 of the chamber body 1 are connected to a second chamber body 7 and a third chamber body 9, respectively. The second chamber body 7 and the third chamber body 9 have a second chamber 71 and a third chamber 91 therein, respectively. Both sides of the second chamber body 7 and the third chamber 9 have an inlet pipeline 72, 92 and an outlet pipeline 73, 93, respectively. The outlet pipeline 73 of the second chamber body 7 is in fluid communication with the inlet pipeline 12 of the chamber body 1 via a conduit 8, while the inlet pipeline 92 of the third chamber body 9 is in fluid communication with the outlet pipeline 13 of the chamber body 1 via a conduit 8. The inner wall face of the second chamber 71 is provided with a valve 2 at the position corresponding to that of the inlet pipeline 72. At the same time, the inner wall face of the third chamber 91 is provided with another valve 2a at the position corresponding to that of the outlet pipeline 13. Via this arrangement, when the activating element 4 provided on the chamber body 1 starts to act and generates a downwardly swinging action, the membrane 3 is caused to press the inner space of the chamber 11 of the chamber body 1 and thus to force the working fluid to flow toward the inlet pipeline 12 and the outlet pipeline 13. As a result, the working fluid is forced to generate a momentum whereby it can drain from the outlet pipeline 13 and flow through the valve 2a. Then, the working fluid sequentially flows into the third chamber 91, the outlet pipeline 93, the conduit 8 and other components. At the same time, the working fluid flowing into the inlet pipeline 12 impacts the valve 2 provided in the second chamber body 7 so as to cause the valve 2 to close the inlet pipeline 72 of the second chamber body 7 tightly, thereby preventing the working fluid outside the inlet pipeline 72 from flowing back into the second chamber 71. When the activating element 4 swings upwardly, the chamber 11 returns to its original space. Since the external pressure of the chamber 11 is larger than the internal pressure thereof, the working fluid is forced to enter the chamber 11 from the inlet pipeline 72 and via the valve 2 and then flows into the chamber 11. At the same time, the working fluid in the third chamber body 9 also generates a momentum so as to directly impact the valve 2a provided in the third chamber 91. As a result, the valve 2a is forced to close the inlet pipeline 92 tightly, thereby preventing the working fluid from flowing back into the chamber 11. Therefore, the membrane pump can generate a circulation in one direction.
Although the present invention has been described with reference to the foregoing preferred embodiments, it will be understood that the invention is not limited to the details thereof. Various equivalent variations and modifications may still occur to those skilled in this art in view of the teachings of the present invention. Thus, all such variations and equivalent modifications are also embraced within the scope of the invention as defined in the appended claims.
Claims
1. A membrane pump device, comprising:
- a chamber body having an inlet pipeline and an outlet pipeline, respectively;
- a membrane provided on the top surface of the chamber body; and
- an activating element abutting flatly against the 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;
- a second chamber body being in fluid communication with the chamber body;
- 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 device according to claim 1, wherein the second chamber body further comprises a second chamber, an inlet pipeline and an outlet pipeline, and the inlet pipeline and the outlet pipeline are in fluid communication with the second chamber.
3. The membrane pump device according to claim 2, wherein the inlet pipeline of the second chamber body is in fluid communication with the outlet pipeline of the chamber body.
4. The membrane pump device according to claim 3, wherein an inner wall face of the second chamber body is provided with a valve at a position corresponding to that of the inlet pipeline.
5. The membrane pump device according to claim 3, wherein the chamber body further comprises a chamber that is in fluid communication with the inlet pipeline and the outlet pipeline of the chamber body.
6. The membrane pump device according to claim 5, wherein the inner wall face of the chamber is provided with a valve at the position corresponding to that of the inlet pipeline.
7. The membrane pump device according to claim 2, wherein the outlet pipeline of the second chamber body is in fluid communication with the inlet pipeline of the chamber body.
8. The membrane pump device according to claim 7, wherein the outlet pipeline of the chamber body is further connected to a third chamber body.
9. The membrane pump device according to claim 8, wherein the third chamber body further comprises a third chamber, an inlet pipeline and an outlet pipeline, and the inlet pipeline and the outlet pipeline are in fluid communication with the third chamber.
10. The membrane pump device according to claim 9, wherein the inner wall face of the third chamber is provided with a valve at the position corresponding to that of the inlet pipeline.
11. The membrane pump device 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.
12. The membrane pump device according to claim 11, wherein the fixed end is electrically connected with a plurality of electrodes leads.
13. The membrane pump device according to claim 12, wherein the plurality of electrodes leads penetrates into the corresponding penetrating troughs.
14. The membrane pump device according to claim 1, wherein the activating element is a piezoelectric piece.
15. The membrane pump device according to claim 1, wherein the fixed end is electrically connected with a plurality of electrode leads.
16. The membrane pump device 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.
Type: Application
Filed: Apr 17, 2007
Publication Date: Oct 23, 2008
Inventors: Hsiao-Kang Ma (Taipei), Chang-Hung Peng (Chung-Ho City), Bo-Ren Hou (Yonghe City), Hong-Yun Wu (Taipei City), Ming-Chien Kuo (Chung-Ho City)
Application Number: 11/736,166