CN2821218Y - Piezoelectric film type fluid pump - Google Patents
Piezoelectric film type fluid pump Download PDFInfo
- Publication number
- CN2821218Y CN2821218Y CNU2005200156321U CN200520015632U CN2821218Y CN 2821218 Y CN2821218 Y CN 2821218Y CN U2005200156321 U CNU2005200156321 U CN U2005200156321U CN 200520015632 U CN200520015632 U CN 200520015632U CN 2821218 Y CN2821218 Y CN 2821218Y
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- fluid
- film type
- piezoelectric film
- pump
- way valve
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Abstract
The utility model relates to a piezoelectric film type fluid pump which comprises a hollow round table type pump body in which an upper and a lower round tables with larger diameters than the diameter of a round cavity are arranged, wherein elastic supporting pads are respectively arranged on the outer end faces of the round tables, and piezoelectric ceramic sheets are respectively stuck and pressed on the outer surfaces of the supporting pads between which a fluid cavity is formed; the radial direction of the pump body is provided with a fluid inlet passage and a fluid outlet passage which are communicated with the fluid cavity, an inlet one-way valve is installed in the fluid inlet passage, and an outlet one-way valve is installed in the fluid outlet passage; the piezoelectric ceramic sheets are respectively connected with an excitation power supply. The utility model integrates power, transmission and conveyance into integration and has the advantages of simple structure, small size, light weight, low energy consumption and no rotary inertia; the piezoelectric film type fluid pump is suitable for space and biotic environment to apply; the piezoelectric film type fluid pump is directly converted into mechanical energy for pushing fluids from electric energy without mechanical rotating, transmission and speed changing structures; the piezoelectric film type fluid pump is in contact with the fluids without metal; the utility model can simultaneously convey and adjust multi-passage fluids through connection in parallel and can raise an output press head of the piezoelectric film type fluid pump through connection in series.
Description
Invention field
The utility model relates to a kind of fluid pump, particularly a kind of piezoelectric film type fluid pump.
Background technique
Fluid pump is of a great variety, uses very extensive in industrial and agricultural production, biology, medical domain.
Existing fluid pump has: various forms of water pumps, building, processing, industrial fluids pump such as agricultural, civilian; Special-purpose fluid pump in the industries such as various chemistry, chemical industry, diet, dyestuff coating; The artificial heart pump that immediate development is got up, insulin pump removes the bolt pump, syringe pump, separate pump, human medical pump such as chemotherapy pump and the peristaltic pump that is used for bioscience test aspect, constant flow pump, biological test pumps such as plunger pump.
Conclusion is got up, conventional fluid pump of the prior art, and its basic structure includes: power source (as electric rotating machine etc.), mechanical driving part (gear graduation steering equipment) and pump head (the pump head part that turbine, blade, propelling channel bar etc. constitute); Partly export in order to make fluid pass through pump head, power source and mechanical driving part are indispensable.But in space science or field of biology, there is following shortcoming in this structure pump:
1. there is rotary inertia to exist.This is undesirable;
2. increase useless volume and weight, reduced efficient.To reduce in actual applications as far as possible;
3. there is the effect that rolls, shears in biological cell material mostly by pump head the time, influences its activity easily.This should be avoided in actual applications as far as possible;
4. be difficult to solve the biofluid transportation problem of tiny flow quantity, and multiple fluid working medium transportation problem when can control respectively.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that above-mentioned conventional fluid pump exists, and a kind of piezoelectric film type fluid pump that can satisfy space science or field of biology needs is provided.The utility model can:
1. solve and to be applicable under the space microgravity environment that the required tiny flow quantity of scientific experiment is carried and biological cell material not damaged problem.
2. can adapt to space environment to various demands such as no rotary inertia, no magnetic, power saving, light weight, long lifetives.
3. can satisfy the difference transportation problem of polytype fluid required in the systems such as biology, chemistry, medical science.
The technical solution of the utility model is as follows:
The piezoelectric film type fluid pump that the utility model provides comprises:
The one open circles bench-type pump housing 1 is provided with the upper and lower round platform of diameter greater than this cylindrical cavity body diameter in its open circles cavity, elastic support pad 15 is installed on the exterior edge face of round platform on it, is covered with piezoelectric ceramic 2 on the outer surface of last elastic support pad 15; On the exterior edge face of round platform elastic support pad 151 is installed down under it, is covered with lower piezoelectric ceramic plate 21 on the outer surface of following elastic support pad 151; Described going up forms a fluid chamber 11 between elastic support pad 15 and the following elastic support pad 151;
The described open circles bench-type pump housing 1 radially be provided with fluid inlet channel 12 and the fluid output passage 13 that communicates with described fluid chamber 11; Also comprise
Be installed in the fluid input one-way valve in the fluid inlet channel 12; With
Be installed in the fluid output one-way valve in the fluid output passage 13; Described inlet one-way valve and the one-way valve of outlet one-way valve for the control one-directional fluid flow;
The described piezoelectric ceramic 2 of going up is connected with excitation power supply respectively with lower piezoelectric ceramic plate 21.Described excitation power supply is the pulse power supply of 50-350V.
Described inlet one-way valve is to be installed in the fluid inlet channel 12 and the silicone rubber elastic valve plate 33 of described fluid chamber 11 inlet communicating buffer cells 31 inner fluid entry ends.
Described outlet one-way valve is the silicone rubber elastic valve plate 44 that is installed in the fluid input end in the outlet buffer cell 41 that communicates with described fluid chamber 11 in the fluid output passage 13.
Piezoelectric film type fluid pump of the present utility model can and join use together by a plurality of piezoelectric film type fluid pumps, with conveying that realizes multiple fluid or the purpose that realizes different flow.
Piezoelectric film type fluid pump of the present utility model also can be concatenated into one by a plurality of piezoelectric film type fluid pumps and use, to improve its output pressure head.
During use, fluid enters fluid chamber 11 by fluid input end 12 through inlet one-way valve; In fluid chamber 11, because power supply to piezoelectric crystalline film sheet power supply particularly importantly, the result of Lian Jieing makes the fluid pump of this form that the input and output of fluid are finished synchronously like this, rather than is divided into two and goes on foot and carry out.Thereby it can be operated in the airtight fluid circuit, forms the continuous circulation of fluid, therefore becomes the recycle pump of real practicality.As in blood of human body circulation cardiac role.
Excitation, the piezoelectric crystalline film sheet produces orientation movement, changes and make the volume of fluid chamber 11 produce, propelling fluid is transferred out by the outlet one-way valve.
The utility model collection power, transmission, conveying are one.The generation of power is the reciprocal vibrations that pressured transistor film sheet produces under electric excitation; Being carried by two one-way valves (being inlet one-way valve and outlet one-way valve) to the orientation of fluid outlet 13 by fluid input end 12 of fluid guarantees; Advantage is:
1. be directly changed into the mechanical energy of propelling fluid from electric energy, do not have structures such as mechanical rotation, transmission, speed change.Current collection excitation, fluid promote, flow direction control etc. is one, assembles the extra-thin novel pump housing, becomes the pump housing of a new generation.Still find no relevant report from present data.
2. except that piezoelectric crystal tablet and appearance set screw, there is not metallic material again.There is not the metal surface with fluid contacting structure face yet.Applicable to multiple biofluid.
3. flow can need not special additional mechanism providing additional operation from little extremely per hour milliliter level until per hour hundred milliliters of convenient adjustings of levels.Thereby little, the small flow situation that are specially adapted to the wide range adjusting use and research experiment is suitable for.
4. can make things convenient for cascade to accomplish that the multichannel fluid carries simultaneously.The flow of each passage fluid can be accomplished to regulate respectively.General fluid pump is difficult to reach.
5. though the monomer pump head is low, still, can suitably improve the output pressure head by the mode of cascade, use to adapt in the environment of pressure head of having relatively high expectations, so that the application under the common ground environment.
6. simple in structure.Small volume, light weight, low energy consumption, no rotary inertia are specially adapted to space environment and use.Be that the universal fluid pump is difficult to match in excellence or beauty, also be difficult to get both simultaneously.
7. be a kind of pump housing that does not have electromagnetic conversion, do not have the radiation and the leakage in magnetic field in the use, do not have the occasion of magnetic that special purposes is arranged for requiring.Under following space environment and the organism internal milieu, all has potential prospect.
8. long lifetime.Usually be easy to accomplish that continuous working life is more than 5000～10000 hours.Substantially the life-span of depending on piezoelectric crystal tablet.Use the common chip of buying on the market at present.If also be expected to have more long-life chip to occur by cooperation with producer.
In a word, the utility model collection power, transmission, conveying are one; And it is simple in structure; Small volume, light weight, low energy consumption, no rotary inertia; Be applicable to the application of space and biotic environment; Be directly changed into the mechanical energy of propelling fluid from electric energy, do not have mechanical rotation, transmission, speed changing structure; Contact no metal with fluid; Can connect and in parallel the use (can reach that the multichannel fluid is carried simultaneously and adjustable; Series connection is used and can be improved its output pressure head).
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the structural representation of outlet one-way valve.
Embodiment
Further describe the utility model below in conjunction with attached and embodiment:
Accompanying drawing 1 is the utility model one embodiment's a structural representation; As seen from the figure, the pressure that provides of the utility model
The conductive film formula
Fluid pump, the one open circles bench-type pump housing 1, be provided with the upper and lower round platform of diameter in its open circles cavity, elastic support pad 15 is installed on the exterior edge face of round platform on it, be covered with piezoelectric ceramic 2 on the outer surface of last elastic support pad 15 greater than this cylindrical cavity body diameter; On the exterior edge face of round platform elastic support pad 151 is installed down under it, is covered with lower piezoelectric ceramic plate 21 on the outer surface of following elastic support pad 151; Described going up forms a fluid chamber 11 between elastic support pad 15 and the following elastic support pad 151;
The described open circles bench-type pump housing 1 radially be provided with fluid inlet channel 12 and the fluid output passage 13 that communicates with described fluid chamber 11; Also comprise
Be installed in the fluid input one-way valve in the fluid inlet channel 12; With the fluid output one-way valve that is installed in the fluid output passage 13; Described inlet one-way valve and the one-way valve of outlet one-way valve for the control one-directional fluid flow;
The described piezoelectric ceramic 2 of going up is connected with the excitation power supply (not shown) respectively with lower piezoelectric ceramic plate 21.Described excitation power supply is the pulse power supply of 50-350V.
Described inlet one-way valve is to be installed in the fluid inlet channel 12 and the silicone rubber elastic valve plate 33 of described fluid chamber 11 inlet communicating buffer cells 31 inner fluid entry ends.
Described outlet one-way valve is the silicone rubber elastic valve plate 44 that is installed in the fluid input end in the outlet buffer cell 41 that communicates with described fluid chamber 11 in the fluid output passage 13.
Piezoelectric film type fluid pump of the present utility model can and join use together by a plurality of piezoelectric film type fluid pumps, with conveying that realizes multiple fluid or the purpose that realizes different flow.
Piezoelectric film type fluid pump of the present utility model also can be concatenated into one by a plurality of piezoelectric film type fluid pumps and use, to improve its output pressure head.
Outlet one-way valve in the piezoelectric film type fluid pump of the present utility model and inlet one-way valve structure and effect are as preceding described.Can be for being installed in the fluid inlet channel 12 and the silicone rubber elastic valve plate 33 of described fluid chamber 11 inlet communicating buffer cells 31 inner fluid entry ends; With the silicone rubber elastic valve plate 44 that is installed in the fluid input end in the outlet buffer cell 41 that communicates with described fluid chamber 11 in the fluid output passage 13.Its concrete installation is manufactured as Fig. 2 (is example with the outlet one-way valve): at the fluting up and down of outlet passage, fluid input end in fluid output passage 13 is provided with silicone rubber elastic valve plate 44, install groove cover plate 441 and following groove cover plate 442 again in described groove respectively, described going up forms outlet buffer cell 41 between groove cover plate 441 and following groove cover plate 442 and the outlet passage.Described silicone rubber elastic valve plate 44 is arranged on the fluid outlet in the outlet buffer cell 41.
Claims (6)
1, a kind of piezoelectric film type fluid pump is characterized in that, comprising:
The one open circles bench-type pump housing (1), be provided with the upper and lower round platform of diameter in its open circles cavity greater than this cylindrical cavity body diameter, elastic support pad (15) is installed on the exterior edge face of round platform on it, is covered with piezoelectric ceramic (2) on the outer surface of last elastic support pad (15); On the exterior edge face of round platform elastic support pad (151) is installed down under it, following elastic support pad is covered with lower piezoelectric ceramic plate (21) on the outer surface (151); Described going up forms a fluid chamber (11) between elastic support pad (15) and the following elastic support pad (151);
The described open circles bench-type pump housing (1) radially be provided with fluid inlet channel (12) and the fluid output passage (13) that communicates with described fluid chamber (11); Also comprise
Be installed in the fluid input one-way valve in the fluid inlet channel (12); With
Be installed in the fluid output one-way valve in the fluid output passage (13); Described inlet one-way valve and the one-way valve of outlet one-way valve for the control one-directional fluid flow;
The described piezoelectric ceramic (2) of going up is connected with excitation power supply respectively with lower piezoelectric ceramic plate (21).
2, by the described piezoelectric film type fluid pump of claim 1, it is characterized in that described excitation power supply is the pulse power supply of 50-350V.
3, by the described piezoelectric film type fluid pump of claim 1, it is characterized in that described inlet one-way valve is for being installed in fluid inlet channel (12) in and the silicone rubber elastic valve plate (33) of described fluid chamber (11) inlet communicating buffer cell (31) inner fluid entry end.
4, by the described piezoelectric film type fluid pump of claim 1, it is characterized in that described outlet one-way valve is for being installed in the silicone rubber elastic valve plate (44) of the fluid input end in the outlet buffer cell (41) that communicates with described fluid chamber (11) in the fluid output passage (13).
5, by the described piezoelectric film type fluid pump of claim 1, it is characterized in that this piezoelectric film type fluid pump is a plurality of piezoelectric film type fluid pumps and joins together.
6, by the described piezoelectric film type fluid pump of claim 1, it is characterized in that this piezoelectric film type fluid pump is that a plurality of piezoelectric film type fluid pumps are concatenated into one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200156321U CN2821218Y (en) | 2005-04-08 | 2005-04-08 | Piezoelectric film type fluid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200156321U CN2821218Y (en) | 2005-04-08 | 2005-04-08 | Piezoelectric film type fluid pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2821218Y true CN2821218Y (en) | 2006-09-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200156321U Expired - Fee Related CN2821218Y (en) | 2005-04-08 | 2005-04-08 | Piezoelectric film type fluid pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2821218Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145398A (en) * | 2019-06-26 | 2020-12-29 | 德尔格制造股份两合公司 | Micropump system and method for directing compressible fluids |
-
2005
- 2005-04-08 CN CNU2005200156321U patent/CN2821218Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145398A (en) * | 2019-06-26 | 2020-12-29 | 德尔格制造股份两合公司 | Micropump system and method for directing compressible fluids |
| US11739745B2 (en) | 2019-06-26 | 2023-08-29 | Drägerwerk Ag & Co Kgaa | Compressible fluid micropump system and process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060927 Termination date: 20130408 |