US20080260552A1 - Membrane pump - Google Patents
Membrane pump Download PDFInfo
- Publication number
- US20080260552A1 US20080260552A1 US11/736,142 US73614207A US2008260552A1 US 20080260552 A1 US20080260552 A1 US 20080260552A1 US 73614207 A US73614207 A US 73614207A US 2008260552 A1 US2008260552 A1 US 2008260552A1
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- United States
- Prior art keywords
- chamber
- membrane pump
- pump according
- chamber body
- inlet pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 56
- 239000012530 fluid Substances 0.000 claims abstract description 58
- 230000003213 activating effect Effects 0.000 claims abstract description 38
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
- F04B43/043—Micropumps
- F04B43/046—Micropumps with piezoelectric drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
- F04B43/14—Machines, pumps, or pumping installations having flexible working members having peristaltic action having plate-like flexible members
Definitions
- 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.
- a conventional common piezoelectric pump includes a chamber body 10 .
- the bottom surface of the chamber body 10 is provided with an inlet pipeline 101 and an outlet pipeline 102 .
- the mouths of the inlet pipeline 101 and the outlet pipeline 102 are provided therein with a check valve 20 and 20 a , respectively.
- the top surface of the chamber body 10 is provided with a membrane 103 .
- An activating element 104 abuts flatly on the membrane 103 .
- the activating element 104 is a piezoelectric piece. Via this arrangement, after the activating element 104 is supplied with electricity, the middle portion of the membrane 103 is caused to swing up and down, as indicated by the arrow in this figure.
- the special positional design of such structure is characterized in that the two check valves 20 , 20 a are located in the inlet pipeline 101 and the outlet pipeline 102 , when the activating element 104 swings upwardly, the internal pressure of the chamber body 10 is smaller than the external pressure thereof. Accordingly, both check valves 20 , 20 a move upwardly. As a result, the check valve 20 allows the channel between the inlet pipeline 101 and the chamber body 10 to be opened, so that the working fluid within the inlet pipeline 101 can enter the chamber body 10 . At the same time, the check valve 20 a blocks the channel between the outlet pipeline 102 and the chamber body 10 , so that the working fluid 102 draining from the outlet pipeline 102 cannot flow back into the chamber body 10 .
- the membrane 103 is caused to compress the space of the chamber body 10 and thus to generate a pressure, which causes both check valve 20 , 20 a to move downwardly.
- the check valve 20 a allows the channel between the outlet pipeline 102 and the chamber body 10 to be opened, so that the compressed working fluid within the chamber body 10 can drain away from the outlet pipeline 102 .
- the check valve 20 blocks the channel between the inlet pipeline 101 and the chamber body 10 , so that the water within the chamber body 10 cannot drain away from the inlet pipeline 101 .
- the working fluid can subsequently enter the chamber body 10 from the inlet pipeline 101 , and then flow out of the outlet pipeline 102 . Therefore, the pump becomes a source of driving the flow of the working fluid.
- 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 apply to a further thinned space, such as the current notebook or miniaturized biological and medical instruments.
- 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 downwardly the working fluid within the chamber body 10 , so that the working fluid can flow toward both sides.
- check valves 20 , 20 a 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
- 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.
- the present invention is to provide a membrane pump, 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.
- 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 and the circulation system thereof.
- the present invention provides a membrane pump that is constituted of 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.
- 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.
- FIG. 1 is a cross-sectional view showing a conventional structure
- FIG. 2 is an exploded perspective view showing the structure of the present invention
- FIG. 3 is a view showing the complete assembly of the present invention.
- FIG. 4 is a cross-sectional view (I) showing the operation of the present invention.
- FIG. 5 is a cross-sectional view (II) showing the operation of the present invention.
- FIG. 6 is a cross-sectional view (I) showing the pipeline of the present invention.
- FIG. 7 is a cross-sectional view (II) showing the pipeline of the present invention.
- FIG. 8 is a top view showing the structure of the second embodiment of the present invention.
- FIG. 9 is a schematic view showing the comparison between the swinging action of the present invention and that of prior art.
- FIG. 2 is an exploded perspective view showing the structure of the present invention
- FIG. 3 is a view showing the complete assembly of the present invention.
- the pump of the present invention is mainly constituted of a chamber body 1 .
- the interior of the chamber body 1 is provided respectively with a first chamber 11 and a second chamber 12 for accommodating a working fluid.
- the first chamber 11 is larger than the second chamber 12 .
- Both of the first chamber and the second chamber are separated from each other but in fluid communication with each other.
- a through hole 13 is provided therebetween, so that the first chamber 11 is in fluid communication with the second chamber 12 .
- Both sides of the outer edge of the chamber body 1 are provided respectively with an inlet pipeline 14 and an outlet pipeline 15 .
- the inlet pipeline 14 and the outlet pipeline 15 are in fluid communication with the first chamber 11 and the second chamber 12 , respectively.
- the inner wall face of the first chamber 11 is provided with a valve 2 at a position corresponding to that of the inlet pipeline 14 .
- one end of the valve 2 is provided with a pillar 21 that is located in a penetrating trough 111 on the inner wall face.
- a plate 22 extends from the pillar 21 and corresponds to the position of the mouth of the inlet pipeline 14 . The plate is used to block the working fluid from flowing back to the inlet pipeline 14 from the first chamber 11 and then flowing out of the chamber body 1 .
- the inner wall face of the second chamber 12 is provided with a valve 2 a at a position corresponding to that of the through hole 13 .
- the valve 2 a is used to block the working fluid from flowing back to the first chamber 11 from the second chamber via the through hole 13 .
- the valve 2 a is arranged in the same manner as that of the valve 2 in the first chamber 11 .
- the upper end face of the chamber body 1 is provided with a membrane 3 that is made of a material having a large tension force.
- the size of the membrane 3 is approximately the same as the area of an end surface of the chamber body 1 .
- the membrane completely covers the first chamber 11 and the second chamber 12 .
- An activating element 4 is provided above the membrane 3 .
- the activating element 4 is a piezoelectric piece and is provided correspondingly above the first chamber 11 to flatly abut against the membrane 3 .
- the activating element 4 has a fixed end 41 and a swinging end 42 .
- the fixed end 41 and the outlet pipeline 15 are located on the same side.
- the fixed end 41 is connected with a plurality of electrode leads 5 to supply the necessary electricity for the activating element 4 .
- the swinging end 42 abuts flatly against the surface of the membrane 3 . After the electricity is supplied, the swinging end 42 forms a sector at one side thereof and swings in a large range. As shown in FIG. 9 , under the same swinging angle ⁇ , the variation ⁇ 2 obtained by swinging like a sector is much larger than the variation ⁇ 1 obtained by swinging with the middle portion thereof. Therefore, swinging like a sector can concentrate the working fluid and causes it to flow in the same direction.
- the membrane 3 is caused to press toward the first chamber 11 , thereby improving the drawbacks that the swinging range of the conventional activating element and the amount of flow are too small. Furthermore, the frequency of the swinging action of the activating element 4 can be adjusted according to various desires.
- the chamber body 1 can be correspondingly combined with a casing 6 for covering the membrane 3 and the activating element 4 therein.
- the casing 6 is provided with a plurality of penetrating troughs 61 , 61 a and 61 b on the positions corresponding to those of the activating element 4 , the electrode leads 5 and the second chamber 12 , respectively.
- the activating element 4 is exposed to the outside and has a space for expansion.
- the electrode leads 5 also penetrate through the activating element 4 .
- the complete assembly of the present invention is shown in FIG. 3 .
- FIGS. 4 and 5 are the cross-sectional views showing the operation of the present invention.
- the present invention can be applied to a liquid delivery system or circulation system (such as a water-cooling circulation system).
- the inlet pipeline 14 and the outlet pipeline 15 are connected respectively to conduits 7 of the system, so that the membrane pump is in fluid communication with the other components of the system (not shown), thereby facilitating the working fluid to enter the membrane pump.
- the swinging end 42 of the activating element 4 generates a swinging action with one side thereof swinging like a sector, as shown in FIG. 4 .
- the membrane 3 returns its original shape to release the inner space of the first chamber 11 , so that the internal pressure of the first chamber 11 is smaller than the external pressure thereof, thereby forcing the working fluid to flow from the inlet pipeline 11 via the valve 2 into the first chamber 11 (indicated by the arrow).
- the working fluid remaining in the outlet pipeline 15 and the second chamber 12 also generates a momentum due to the pressure so as to press the valve 2 a , causing the valve 2 a to close the through hole 13 . In this way, the working fluid remaining in the outlet pipeline 15 and the second chamber 12 flows back into the first chamber 11 .
- the working fluid within the membrane pump forms a larger amount of flow in one direction.
- the inlet pipeline 14 and the outlet pipeline 15 are provided on both sides of the chamber body 1 , and in addition, the positions of the inlet pipeline 14 and the outlet pipeline 15 can be varied according to different situations.
- the inlet pipeline 14 is provided at one side of the chamber body 1 and is in fluid communication with the first chamber 11 .
- the outlet pipeline 15 is provided on the bottom of the chamber body 1 and is in fluid communication with the second chamber 12 .
- the inlet pipeline 14 and the outlet pipeline 15 are in fluid communication with the first chamber 11 and the second chamber 12 , respectively.
- the valve 2 is provided in the first chamber 11 at a position corresponding to that of the inlet pipeline 14 , thereby blocking the working fluid from flowing back into the inlet pipeline 14 . Therefore, via the action of the valve 2 , the working fluid entering the chamber body 1 can generate a pumping action with one side entering and the other side exiting, thereby overcoming the drawback that the amount of flow in the conventional pump is too small.
- the membrane pump is mainly constituted of a chamber body 1 .
- the interior of the chamber body 1 has a first chamber 11 and the second chamber 12 .
- the second chamber 12 is provided at one side of the first chamber 11 . Both chambers are in fluid communication with each other via a through hole 13 .
- the chamber body 1 has an inlet pipeline 14 and an outlet pipeline 15 .
- the inlet pipeline 14 and the outlet pipeline 15 are located on the same side.
- the inlet pipeline 14 and the outlet pipeline 15 are in fluid communication with the first chamber 11 and the second chamber 12 , respectively.
- the inner wall face of the first chamber 11 is provided with a valve 2 at a position corresponding to that of the inlet pipeline 14 .
- the inner wall face of the second chamber 12 is provided with a valve 2 a at a position corresponding to that of the through hole 13 .
- the top surface of the chamber body 1 is provided with a membrane 3 that covers the first chamber 11 and the second chamber 12 .
- An activating element 4 is provided on the upper surface of the membrane 3 .
- the activating element 4 has a fixed end 41 and a swinging end 42 .
- the fixed end 41 is electrically connected with a plurality of electrode leads 5 .
- the fixed end 41 is located on the same side as the inlet pipeline 14 and the outlet pipeline 15 , thereby facilitating the swinging end 42 of the activating element 4 to generate a swinging action with one side thereof swinging like a sector.
- the chamber body 1 can also be combined with a casing 6 , thereby covering the membrane 3 and the activating element 4 therein.
- the swinging end 42 After the electricity is supplied to the activating element 4 of the chamber body 1 , the swinging end 42 generates a swinging action with one side thereof swinging like a sector. When the swinging end 42 swings downwardly, the membrane 3 is caused to press toward the interior of the first chamber 11 , causing to increase the internal pressure of the first chamber 11 . Therefore, the working fluid remaining in the first chamber 11 generates a momentum and moves simultaneously toward the inlet pipeline 14 and the outlet pipeline 15 . When the working fluid flows toward the inlet pipeline 14 , the thus-generated momentum presses the valve 2 that is located at the position corresponding to the inlet pipeline 14 . Thus, the valve 2 closes the inlet pipeline 14 to avoid the working fluid from flowing back into the inlet pipeline 14 and from generating a backflow phenomenon.
- the momentum generated by the working fluid flowing toward the outlet pipeline 15 rushes the valve 2 a , so that the working fluid flows toward the other components via the second chamber 12 .
- the membrane 3 returns to its original shape and recovers the internal pressure of the first chamber 11 , so that the external pressure of the first chamber 11 is larger than the internal pressure thereof.
- the working fluid flows into the inlet pipeline 14 to push away the valve 2 and flows into the first chamber 11 .
- the working fluid remaining in the second chamber 12 also generates a momentum due to the pressure, thereby pressing the valve 2 a located in the through hole 13 . In this way, the through hole 13 is closed to block the working fluid from flowing back into the first chamber 11 , so that the membrane pump can generate a circulating action in one direction.
Abstract
Description
- 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
FIG. 1 , a conventional common piezoelectric pump includes achamber body 10. The bottom surface of thechamber body 10 is provided with aninlet pipeline 101 and anoutlet pipeline 102. The mouths of theinlet pipeline 101 and theoutlet pipeline 102 are provided therein with acheck valve chamber body 10 is provided with amembrane 103. An activatingelement 104 abuts flatly on themembrane 103. The activatingelement 104 is a piezoelectric piece. Via this arrangement, after the activatingelement 104 is supplied with electricity, the middle portion of themembrane 103 is caused to swing up and down, as indicated by the arrow in this figure. Since the special positional design of such structure is characterized in that the twocheck valves inlet pipeline 101 and theoutlet pipeline 102, when the activatingelement 104 swings upwardly, the internal pressure of thechamber body 10 is smaller than the external pressure thereof. Accordingly, bothcheck valves check valve 20 allows the channel between theinlet pipeline 101 and thechamber body 10 to be opened, so that the working fluid within theinlet pipeline 101 can enter thechamber body 10. At the same time, thecheck valve 20 a blocks the channel between theoutlet pipeline 102 and thechamber body 10, so that the workingfluid 102 draining from theoutlet pipeline 102 cannot flow back into thechamber body 10. On the other hand, when the activatingelement 104 is pressed, themembrane 103 is caused to compress the space of thechamber body 10 and thus to generate a pressure, which causes bothcheck valve check valve 20 a allows the channel between theoutlet pipeline 102 and thechamber body 10 to be opened, so that the compressed working fluid within thechamber body 10 can drain away from theoutlet pipeline 102. Thecheck valve 20 blocks the channel between theinlet pipeline 101 and thechamber body 10, so that the water within thechamber body 10 cannot drain away from theinlet pipeline 101. With this continuously up-and-down swinging action, the working fluid can subsequently enter thechamber body 10 from theinlet pipeline 101, and then flow out of theoutlet pipeline 102. Therefore, the pump becomes a source of driving the flow of the working fluid. - However, such kind of piezoelectric pump has some drawbacks. First of all, both the
inlet pipeline 101 and theoutlet pipeline 102 are provided on the bottom surface of thechamber 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 apply to a further thinned space, such as the current notebook or miniaturized biological and medical instruments. Furthermore, the activatingelement 104 swings in a manner that the middle portion thereof generates an up-and-down swinging action. When the activatingelement 104 is pressed, it simultaneously drives themembrane 103 to press downwardly the working fluid within thechamber body 10, so that the working fluid can flow toward both sides. Although thecheck valves inlet pipeline 101 and theoutlet pipeline 102 so as to prevent the working fluid from entering theinlet pipeline 101 and generating a so-called backflow phenomenon, in practice, only the middle portion of the activatingelement 104 acts as the swinging region, causing the swinging range of the activatingelement 104 too small. Therefore, during each swinging action, the amount of the fluid entering or draining from thechamber body 10 is small, which is the primary drawback of the pump structure. - Therefore, in view of the above drawbacks, the present invention is to provide a membrane pump, 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 and the circulation system thereof.
- In order to achieve the above objects, the present invention provides a membrane pump that is constituted of 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.
-
FIG. 1 is a cross-sectional view showing a conventional structure; -
FIG. 2 is an exploded perspective view showing the structure of the present invention; -
FIG. 3 is a view showing the complete assembly of the present invention; -
FIG. 4 is a cross-sectional view (I) showing the operation of the present invention; -
FIG. 5 is a cross-sectional view (II) showing the operation of the present invention; -
FIG. 6 is a cross-sectional view (I) showing the pipeline of the present invention; -
FIG. 7 is a cross-sectional view (II) showing the pipeline of the present invention; -
FIG. 8 is a top view showing the structure of the second embodiment of the present invention; and -
FIG. 9 is a schematic view showing the comparison between the swinging action of the present invention and that of prior art. -
FIG. 2 is an exploded perspective view showing the structure of the present invention, andFIG. 3 is a view showing the complete assembly of the present invention. As shown in the figures, the pump of the present invention is mainly constituted of achamber body 1. The interior of thechamber body 1 is provided respectively with afirst chamber 11 and asecond chamber 12 for accommodating a working fluid. In the present embodiment, thefirst chamber 11 is larger than thesecond chamber 12. Both of the first chamber and the second chamber are separated from each other but in fluid communication with each other. In the present embodiment, athrough hole 13 is provided therebetween, so that thefirst chamber 11 is in fluid communication with thesecond chamber 12. Both sides of the outer edge of thechamber body 1 are provided respectively with aninlet pipeline 14 and anoutlet pipeline 15. Theinlet pipeline 14 and theoutlet pipeline 15 are in fluid communication with thefirst chamber 11 and thesecond chamber 12, respectively. The inner wall face of thefirst chamber 11 is provided with avalve 2 at a position corresponding to that of theinlet pipeline 14. In the present embodiment, one end of thevalve 2 is provided with apillar 21 that is located in apenetrating trough 111 on the inner wall face. Aplate 22 extends from thepillar 21 and corresponds to the position of the mouth of theinlet pipeline 14. The plate is used to block the working fluid from flowing back to theinlet pipeline 14 from thefirst chamber 11 and then flowing out of thechamber body 1. The inner wall face of thesecond chamber 12 is provided with avalve 2 a at a position corresponding to that of thethrough hole 13. Thevalve 2 a is used to block the working fluid from flowing back to thefirst chamber 11 from the second chamber via the throughhole 13. Thevalve 2 a is arranged in the same manner as that of thevalve 2 in thefirst chamber 11. - With reference to
FIG. 2 , the upper end face of thechamber body 1 is provided with amembrane 3 that is made of a material having a large tension force. The size of themembrane 3 is approximately the same as the area of an end surface of thechamber body 1. Further, the membrane completely covers thefirst chamber 11 and thesecond chamber 12. An activatingelement 4 is provided above themembrane 3. In the present embodiment, the activatingelement 4 is a piezoelectric piece and is provided correspondingly above thefirst chamber 11 to flatly abut against themembrane 3. The activatingelement 4 has a fixedend 41 and a swingingend 42. Thefixed end 41 and theoutlet pipeline 15 are located on the same side. Thefixed end 41 is connected with a plurality of electrode leads 5 to supply the necessary electricity for the activatingelement 4. The swingingend 42 abuts flatly against the surface of themembrane 3. After the electricity is supplied, the swingingend 42 forms a sector at one side thereof and swings in a large range. As shown inFIG. 9 , under the same swinging angle θ, the variation δ2 obtained by swinging like a sector is much larger than the variation δ1 obtained by swinging with the middle portion thereof. Therefore, swinging like a sector can concentrate the working fluid and causes it to flow in the same direction. At the same time, themembrane 3 is caused to press toward thefirst chamber 11, thereby improving the drawbacks that the swinging range of the conventional activating element and the amount of flow are too small. Furthermore, the frequency of the swinging action of the activatingelement 4 can be adjusted according to various desires. - Finally, the
chamber body 1 can be correspondingly combined with acasing 6 for covering themembrane 3 and the activatingelement 4 therein. Thecasing 6 is provided with a plurality of penetratingtroughs element 4, the electrode leads 5 and thesecond chamber 12, respectively. In this way, the activatingelement 4 is exposed to the outside and has a space for expansion. The electrode leads 5 also penetrate through the activatingelement 4. The complete assembly of the present invention is shown inFIG. 3 . - Please refer to
FIGS. 4 and 5 , which are the cross-sectional views showing the operation of the present invention. As shown in the figures, the present invention can be applied to a liquid delivery system or circulation system (such as a water-cooling circulation system). Theinlet pipeline 14 and theoutlet pipeline 15 are connected respectively toconduits 7 of the system, so that the membrane pump is in fluid communication with the other components of the system (not shown), thereby facilitating the working fluid to enter the membrane pump. When the electricity is supplied to the activatingelement 4 via theleads 5, the swingingend 42 of the activatingelement 4 generates a swinging action with one side thereof swinging like a sector, as shown inFIG. 4 . When the swingingend 42 of the activatingelement 4 swings downwardly, at the same time, themembrane 3 is caused to press the inner space of thefirst chamber 11 to generate a pressure and thus to force the working fluid to flow through thevalve 2 a (indicated by the arrow) toward thesecond chamber 12. Although a little portion of the working fluid flows toward theinlet pipeline 14, the momentum of the working fluid can force thevalve 2 to close the mouth of theinlet pipeline 14, thereby preventing the working fluid from flowing back to theinlet pipeline 14. On the other hand, when the swingingend 42 of the activatingelement 4 swings upwardly, as shown inFIG. 5 , themembrane 3 returns its original shape to release the inner space of thefirst chamber 11, so that the internal pressure of thefirst chamber 11 is smaller than the external pressure thereof, thereby forcing the working fluid to flow from theinlet pipeline 11 via thevalve 2 into the first chamber 11 (indicated by the arrow). The working fluid remaining in theoutlet pipeline 15 and thesecond chamber 12 also generates a momentum due to the pressure so as to press thevalve 2 a, causing thevalve 2 a to close the throughhole 13. In this way, the working fluid remaining in theoutlet pipeline 15 and thesecond chamber 12 flows back into thefirst chamber 11. Thus, the working fluid within the membrane pump forms a larger amount of flow in one direction. - The
inlet pipeline 14 and theoutlet pipeline 15 are provided on both sides of thechamber body 1, and in addition, the positions of theinlet pipeline 14 and theoutlet pipeline 15 can be varied according to different situations. As shown inFIG. 6 , theinlet pipeline 14 is provided at one side of thechamber body 1 and is in fluid communication with thefirst chamber 11. Theoutlet pipeline 15 is provided on the bottom of thechamber body 1 and is in fluid communication with thesecond chamber 12. Alternatively, as shown inFIG. 7 , theinlet pipeline 14 and theoutlet pipeline 15 are in fluid communication with thefirst chamber 11 and thesecond chamber 12, respectively. Thevalve 2 is provided in thefirst chamber 11 at a position corresponding to that of theinlet pipeline 14, thereby blocking the working fluid from flowing back into theinlet pipeline 14. Therefore, via the action of thevalve 2, the working fluid entering thechamber body 1 can generate a pumping action with one side entering and the other side exiting, thereby overcoming the drawback that the amount of flow in the conventional pump is too small. - With reference to
FIG. 8 , it is a top view showing the structure of the second embodiment of the present invention. As shown in this figure, the membrane pump is mainly constituted of achamber body 1. The interior of thechamber body 1 has afirst chamber 11 and thesecond chamber 12. In the present embodiment, thesecond chamber 12 is provided at one side of thefirst chamber 11. Both chambers are in fluid communication with each other via a throughhole 13. Furthermore, thechamber body 1 has aninlet pipeline 14 and anoutlet pipeline 15. Theinlet pipeline 14 and theoutlet pipeline 15 are located on the same side. Theinlet pipeline 14 and theoutlet pipeline 15 are in fluid communication with thefirst chamber 11 and thesecond chamber 12, respectively. The inner wall face of thefirst chamber 11 is provided with avalve 2 at a position corresponding to that of theinlet pipeline 14. The inner wall face of thesecond chamber 12 is provided with avalve 2 a at a position corresponding to that of the throughhole 13. The top surface of thechamber body 1 is provided with amembrane 3 that covers thefirst chamber 11 and thesecond chamber 12. An activatingelement 4 is provided on the upper surface of themembrane 3. The activatingelement 4 has a fixedend 41 and a swingingend 42. Thefixed end 41 is electrically connected with a plurality of electrode leads 5. In the present embodiment, thefixed end 41 is located on the same side as theinlet pipeline 14 and theoutlet pipeline 15, thereby facilitating the swingingend 42 of the activatingelement 4 to generate a swinging action with one side thereof swinging like a sector. Finally, thechamber body 1 can also be combined with acasing 6, thereby covering themembrane 3 and the activatingelement 4 therein. - After the electricity is supplied to the activating
element 4 of thechamber body 1, the swingingend 42 generates a swinging action with one side thereof swinging like a sector. When the swingingend 42 swings downwardly, themembrane 3 is caused to press toward the interior of thefirst chamber 11, causing to increase the internal pressure of thefirst chamber 11. Therefore, the working fluid remaining in thefirst chamber 11 generates a momentum and moves simultaneously toward theinlet pipeline 14 and theoutlet pipeline 15. When the working fluid flows toward theinlet pipeline 14, the thus-generated momentum presses thevalve 2 that is located at the position corresponding to theinlet pipeline 14. Thus, thevalve 2 closes theinlet pipeline 14 to avoid the working fluid from flowing back into theinlet pipeline 14 and from generating a backflow phenomenon. At the same time, the momentum generated by the working fluid flowing toward theoutlet pipeline 15 rushes thevalve 2 a, so that the working fluid flows toward the other components via thesecond chamber 12. On the other hand, when the activatingelement 4 swings upwardly, themembrane 3 returns to its original shape and recovers the internal pressure of thefirst chamber 11, so that the external pressure of thefirst chamber 11 is larger than the internal pressure thereof. Thus, the working fluid flows into theinlet pipeline 14 to push away thevalve 2 and flows into thefirst chamber 11. Further, the working fluid remaining in thesecond chamber 12 also generates a momentum due to the pressure, thereby pressing thevalve 2 a located in the throughhole 13. In this way, the throughhole 13 is closed to block the working fluid from flowing back into thefirst chamber 11, so that the membrane pump can generate a circulating action 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 (17)
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US11/736,142 US20080260552A1 (en) | 2007-04-17 | 2007-04-17 | Membrane pump |
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US11/736,142 US20080260552A1 (en) | 2007-04-17 | 2007-04-17 | Membrane pump |
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US20080260552A1 true US20080260552A1 (en) | 2008-10-23 |
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US11/736,142 Abandoned US20080260552A1 (en) | 2007-04-17 | 2007-04-17 | Membrane pump |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120051946A1 (en) * | 2010-01-20 | 2012-03-01 | Postech Academy-Industry Foundation | Micropump and driving method thereof |
CN102678533A (en) * | 2011-10-27 | 2012-09-19 | 蔡应麟 | Connection structure of diaphragm pump cap and water pipeline |
US9205665B2 (en) * | 2013-12-19 | 2015-12-08 | Toshiba Tec Kabushiki Kaisha | Inkjet apparatus using piezoelectric pump |
CN108457846A (en) * | 2017-02-20 | 2018-08-28 | 研能科技股份有限公司 | Minitype gas transmitting device |
CN108506195A (en) * | 2017-02-24 | 2018-09-07 | 研能科技股份有限公司 | Fluid delivery system |
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US4009366A (en) * | 1975-08-29 | 1977-02-22 | James B. Carter Limited | Thermal pulse type heater and valve therefore |
US4344743A (en) * | 1979-12-04 | 1982-08-17 | Bessman Samuel P | Piezoelectric driven diaphragm micro-pump |
US4596575A (en) * | 1983-08-04 | 1986-06-24 | Omikron Scientific Ltd. | Liquid delivery system particularly useful as an implantable micropump for delivering insulin or other drugs |
US4832076A (en) * | 1987-07-27 | 1989-05-23 | Scaramucci John P | Swing check valve with hinge pin retainer |
US5839467A (en) * | 1993-10-04 | 1998-11-24 | Research International, Inc. | Micromachined fluid handling devices |
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US6074178A (en) * | 1997-04-15 | 2000-06-13 | Face International Corp. | Piezoelectrically actuated peristaltic pump |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120051946A1 (en) * | 2010-01-20 | 2012-03-01 | Postech Academy-Industry Foundation | Micropump and driving method thereof |
CN102678533A (en) * | 2011-10-27 | 2012-09-19 | 蔡应麟 | Connection structure of diaphragm pump cap and water pipeline |
US9205665B2 (en) * | 2013-12-19 | 2015-12-08 | Toshiba Tec Kabushiki Kaisha | Inkjet apparatus using piezoelectric pump |
CN108457846A (en) * | 2017-02-20 | 2018-08-28 | 研能科技股份有限公司 | Minitype gas transmitting device |
CN108506195A (en) * | 2017-02-24 | 2018-09-07 | 研能科技股份有限公司 | Fluid delivery system |
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AS | Assignment |
Owner name: MA, HSIAO-KANG, TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MA, HSIAO-KANG;PENG, CHANG-HUNG;HOU, BO-REN;AND OTHERS;REEL/FRAME:019172/0186 Effective date: 20070103 Owner name: COOLER MASTER CO., LTD, TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MA, HSIAO-KANG;PENG, CHANG-HUNG;HOU, BO-REN;AND OTHERS;REEL/FRAME:019172/0186 Effective date: 20070103 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |