US20080260553A1 - Membrane pump device - Google Patents
Membrane pump device Download PDFInfo
- Publication number
- US20080260553A1 US20080260553A1 US11/736,166 US73616607A US2008260553A1 US 20080260553 A1 US20080260553 A1 US 20080260553A1 US 73616607 A US73616607 A US 73616607A US 2008260553 A1 US2008260553 A1 US 2008260553A1
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- United States
- Prior art keywords
- chamber body
- chamber
- pump device
- membrane pump
- 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
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- 239000012528 membrane Substances 0.000 title claims abstract description 55
- 239000012530 fluid Substances 0.000 claims abstract description 54
- 230000003213 activating effect Effects 0.000 claims abstract description 35
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 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
- 239000000463 material Substances 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
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 sequentially 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 be applied 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 the working fluid within the chamber body 10 downwardly, 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 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.
- 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.
- 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.
- 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.
- the second chamber body is in fluid communication with the chamber body.
- the interior of the second chamber body is provided with another valve.
- FIG. 1 is a cross-sectional view showing a conventional structure
- FIG. 2 is an exploded perspective view showing the structure of the membrane pump of the present invention
- FIG. 3 is a view showing the complete assembly of the membrane pump of the present invention.
- FIG. 4 is a top view showing the structure of the present invention.
- FIG. 5 is a cross-sectional view (I) showing the operation of the present invention.
- FIG. 6 is a cross-sectional view (II) showing the operation of the present invention.
- FIG. 7 is a top view showing the structure of the second embodiment of the present invention.
- FIG. 8 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 pump 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 with a chamber 11 for accommodating a working fluid.
- an inlet pipeline 12 and an outlet pipeline 13 are provided respectively.
- the inlet pipeline 12 and the outlet pipeline 13 are in fluid communication with the chamber 11 , respectively.
- the inner wall face of the chamber 11 is provided with a valve 2 at a position corresponding to that of the inlet pipeline 12 .
- 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 12 . The plate is used to block the working fluid from flowing back from the chamber 11 to the inlet pipeline 12 and then flowing out of the chamber body 1 .
- 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 chamber 11 .
- An activating element 4 is provided above the membrane 3 .
- the activating element 4 is a piezoelectric piece and is provided above the first chamber 11 correspondingly to abut flatly 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 13 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. 8 , 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 concentrates the working fluid and causes it to flow in the same direction. At the same time, the membrane 3 is caused to press toward the 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 and 61 a at the positions corresponding to those of the activating element 4 and the electrode leads 5 , 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 .
- the membrane pump device further comprises a second chamber body 7 .
- the interior of the second chamber body 7 has a second chamber 71 .
- Both sides of the second chamber body 7 are provided with an inlet pipeline 72 and an outlet pipeline 73 , respectively.
- the inlet pipeline 72 is in fluid communication with the outlet pipeline 13 of the chamber body 1 via a conduit 8 .
- a valve 2 a is provided on the inner wall face of the second chamber 71 at the position corresponding to that of the inlet pipeline 72 .
- the outlet pipeline is also connected with a conduit 8 , thereby being brought into fluid communication with the other components.
- FIGS. 5 and 6 are the cross-sectional views showing the operation of the present invention.
- the electricity is supplied to the activating element 4 provided on the membrane pump, it starts to act and generates a swinging action with one side thereof swinging like a sector.
- the membrane 3 is caused to press the inner space of the chamber 11 to increase the internal pressure of the space.
- the working fluid remaining in the chamber 11 is forced to generate a momentum whereby it can drain from the outlet pipeline 13 and flow through the valve 2 a provided in the second chamber body 7 via the conduit 8 .
- the working fluid sequentially flows into the second chamber 71 , the outlet pipeline 73 , the conduit 8 and other components.
- a small portion of the working fluid simultaneously impacts the valve 2 provided in the chamber 11 so as to cause the valve 2 to close the inlet pipeline 12 , thereby preventing the working fluid outside the inlet pipeline 12 from flowing back into the chamber 1 .
- the activating element 4 swings upwardly, the internal pressure of the chamber 11 returns to a normal condition.
- the external pressure of the chamber body 1 is larger than the internal pressure thereof, so that the working fluid can enter the chamber 11 via the inlet pipeline 12 .
- the working fluid in the second chamber body 7 generates a momentum due to the pressure so as to directly impact the valve 2 a provided in the second chamber 71 .
- the valve 2 a is forced to close the inlet pipeline 72 tightly, thereby blocking the working fluid from flowing back into the chamber body 1 . Therefore, the working fluid can generate a circulation in one direction.
- FIG. 7 it is a top view showing the structure of another device comprising the membrane pump of the present invention.
- a structure includes a chamber body 1 .
- the interior of the chamber body 1 has a chamber 11 .
- Both sides of the chamber body 1 are provided with an inlet pipeline 12 and an outlet pipeline 13 , respectively.
- the top surface of the chamber 11 is provided with a membrane 3 .
- the upper surface of the membrane 3 is provided with an activating element 4 .
- 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 swinging end 42 After being supplied with electricity, the swinging end 42 generates a swinging action with one side thereof swinging like a sector.
- the chamber body 1 can be combined with a casing 6 , thereby covering the aforementioned elements therein.
- 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
- 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 .
- the inner wall face of the third chamber 91 is provided with another valve 2 a at the position corresponding to that of the outlet pipeline 13 .
- the working fluid sequentially flows into the third chamber 91 , the outlet pipeline 93 , the conduit 8 and other components.
- 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 .
- 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 .
- the working fluid in the third chamber body 9 also generates a momentum so as to directly impact the valve 2 a provided in the third chamber 91 .
- the valve 2 a 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.
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 sequentially 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 be applied 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 the working fluid within thechamber body 10 downwardly, 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 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.
-
FIG. 1 is a cross-sectional view showing a conventional structure; -
FIG. 2 is an exploded perspective view showing the structure of the membrane pump of the present invention; -
FIG. 3 is a view showing the complete assembly of the membrane pump of the present invention; -
FIG. 4 is a top view showing the structure of the present invention; -
FIG. 5 is a cross-sectional view (I) showing the operation of the present invention; -
FIG. 6 is a cross-sectional view (II) showing the operation of the present invention; -
FIG. 7 is a top view showing the structure of the second embodiment of the present invention; and -
FIG. 8 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 pump 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 with achamber 11 for accommodating a working fluid. On mutually corresponding sides of the outer edge of thechamber body 1, such as the left and right sides in the present embodiment, aninlet pipeline 12 and anoutlet pipeline 13 are provided respectively. Theinlet pipeline 12 and theoutlet pipeline 13 are in fluid communication with thechamber 11, respectively. The inner wall face of thechamber 11 is provided with avalve 2 at a position corresponding to that of theinlet pipeline 12. 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 12. The plate is used to block the working fluid from flowing back from thechamber 11 to theinlet pipeline 12 and then flowing out of thechamber body 1. - 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 thechamber 11. An activatingelement 4 is provided above themembrane 3. In the present embodiment, the activatingelement 4 is a piezoelectric piece and is provided above thefirst chamber 11 correspondingly to abut flatly against themembrane 3. The activatingelement 4 has a fixedend 41 and a swingingend 42. Thefixed end 41 and theoutlet pipeline 13 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. 8 , 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 concentrates the working fluid and causes it to flow in the same direction. At the same time, themembrane 3 is caused to press toward thechamber 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. Thechamber 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 and the electrode leads 5, 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 . - With reference to
FIG. 4 , it is a top view showing the structure of the membrane pump device of the present invention. In addition to the aforementioned membrane pump, the membrane pump device further comprises asecond chamber body 7. The interior of thesecond chamber body 7 has asecond chamber 71. Both sides of thesecond chamber body 7 are provided with aninlet pipeline 72 and anoutlet pipeline 73, respectively. Theinlet pipeline 72 is in fluid communication with theoutlet pipeline 13 of thechamber body 1 via aconduit 8. Avalve 2 a is provided on the inner wall face of thesecond chamber 71 at the position corresponding to that of theinlet pipeline 72. Furthermore, the outlet pipeline is also connected with aconduit 8, thereby being brought into fluid communication with the other components. - Please refer to
FIGS. 5 and 6 , which are the cross-sectional views showing the operation of the present invention. As shown in the figures, when the electricity is supplied to the activatingelement 4 provided on the membrane pump, it starts to act and generates a swinging action with one side thereof swinging like a sector. After the activatingelement 4 is pressed, themembrane 3 is caused to press the inner space of thechamber 11 to increase the internal pressure of the space. As a result, the working fluid remaining in thechamber 11 is forced to generate a momentum whereby it can drain from theoutlet pipeline 13 and flow through thevalve 2 a provided in thesecond chamber body 7 via theconduit 8. Then, the working fluid sequentially flows into thesecond chamber 71, theoutlet pipeline 73, theconduit 8 and other components. On the other hand, a small portion of the working fluid simultaneously impacts thevalve 2 provided in thechamber 11 so as to cause thevalve 2 to close theinlet pipeline 12, thereby preventing the working fluid outside theinlet pipeline 12 from flowing back into thechamber 1. When the activatingelement 4 swings upwardly, the internal pressure of thechamber 11 returns to a normal condition. As a result, the external pressure of thechamber body 1 is larger than the internal pressure thereof, so that the working fluid can enter thechamber 11 via theinlet pipeline 12. At the same time, the working fluid in thesecond chamber body 7 generates a momentum due to the pressure so as to directly impact thevalve 2 a provided in thesecond chamber 71. As a result, thevalve 2 a is forced to close theinlet pipeline 72 tightly, thereby blocking the working fluid from flowing back into thechamber body 1. Therefore, the working fluid can generate a circulation in one direction. - With reference to
FIG. 7 , it is a top view showing the structure of another device comprising the membrane pump of the present invention. As shown in this figure, such a structure includes achamber body 1. The interior of thechamber body 1 has achamber 11. Both sides of thechamber body 1 are provided with aninlet pipeline 12 and anoutlet pipeline 13, respectively. The top surface of thechamber 11 is provided with amembrane 3. The upper surface of themembrane 3 is provided with an activatingelement 4. The activatingelement 4 has a fixedend 41 and a swingingend 42. Thefixed end 41 is electrically connected with a plurality of electrode leads 5. After being supplied with electricity, the swingingend 42 generates a swinging action with one side thereof swinging like a sector. Furthermore, thechamber body 1 can be combined with acasing 6, thereby covering the aforementioned elements therein. - Moreover, the
inlet pipeline 12 and theoutlet pipeline 13 of thechamber body 1 are connected to asecond chamber body 7 and athird chamber body 9, respectively. Thesecond chamber body 7 and thethird chamber body 9 have asecond chamber 71 and athird chamber 91 therein, respectively. Both sides of thesecond chamber body 7 and thethird chamber 9 have aninlet pipeline outlet pipeline outlet pipeline 73 of thesecond chamber body 7 is in fluid communication with theinlet pipeline 12 of thechamber body 1 via aconduit 8, while theinlet pipeline 92 of thethird chamber body 9 is in fluid communication with theoutlet pipeline 13 of thechamber body 1 via aconduit 8. The inner wall face of thesecond chamber 71 is provided with avalve 2 at the position corresponding to that of theinlet pipeline 72. At the same time, the inner wall face of thethird chamber 91 is provided with anothervalve 2 a at the position corresponding to that of theoutlet pipeline 13. Via this arrangement, when the activatingelement 4 provided on thechamber body 1 starts to act and generates a downwardly swinging action, themembrane 3 is caused to press the inner space of thechamber 11 of thechamber body 1 and thus to force the working fluid to flow toward theinlet pipeline 12 and theoutlet pipeline 13. As a result, the working fluid is forced to generate a momentum whereby it can drain from theoutlet pipeline 13 and flow through thevalve 2 a. Then, the working fluid sequentially flows into thethird chamber 91, theoutlet pipeline 93, theconduit 8 and other components. At the same time, the working fluid flowing into theinlet pipeline 12 impacts thevalve 2 provided in thesecond chamber body 7 so as to cause thevalve 2 to close theinlet pipeline 72 of thesecond chamber body 7 tightly, thereby preventing the working fluid outside theinlet pipeline 72 from flowing back into thesecond chamber 71. When the activatingelement 4 swings upwardly, thechamber 11 returns to its original space. Since the external pressure of thechamber 11 is larger than the internal pressure thereof, the working fluid is forced to enter thechamber 11 from theinlet pipeline 72 and via thevalve 2 and then flows into thechamber 11. At the same time, the working fluid in thethird chamber body 9 also generates a momentum so as to directly impact thevalve 2 a provided in thethird chamber 91. As a result, thevalve 2 a is forced to close theinlet pipeline 92 tightly, thereby preventing the working fluid from flowing back into thechamber 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 (16)
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US11/736,166 US20080260553A1 (en) | 2007-04-17 | 2007-04-17 | Membrane pump device |
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US11/736,166 US20080260553A1 (en) | 2007-04-17 | 2007-04-17 | Membrane pump device |
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Cited By (3)
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US20120051946A1 (en) * | 2010-01-20 | 2012-03-01 | Postech Academy-Industry Foundation | Micropump and driving method thereof |
DE102013222283B3 (en) * | 2013-11-04 | 2015-01-15 | Robert Bosch Gmbh | Apparatus and method for handling reagents |
CN112177903A (en) * | 2020-09-29 | 2021-01-05 | 长春工业大学 | Rectangular cavity flexible membrane double-vibrator valveless piezoelectric pump |
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US20120051946A1 (en) * | 2010-01-20 | 2012-03-01 | Postech Academy-Industry Foundation | Micropump and driving method thereof |
DE102013222283B3 (en) * | 2013-11-04 | 2015-01-15 | Robert Bosch Gmbh | Apparatus and method for handling reagents |
US10562026B2 (en) | 2013-11-04 | 2020-02-18 | Robert Bosch Gmbh | Device and method for handling reagents |
CN112177903A (en) * | 2020-09-29 | 2021-01-05 | 长春工业大学 | Rectangular cavity flexible membrane double-vibrator valveless piezoelectric pump |
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