CN101741218A - Electromagnetic pump for driving conductive fluid and manufacturing method thereof - Google Patents
Electromagnetic pump for driving conductive fluid and manufacturing method thereof Download PDFInfo
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- CN101741218A CN101741218A CN200810227046A CN200810227046A CN101741218A CN 101741218 A CN101741218 A CN 101741218A CN 200810227046 A CN200810227046 A CN 200810227046A CN 200810227046 A CN200810227046 A CN 200810227046A CN 101741218 A CN101741218 A CN 101741218A
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- electromagnetic pump
- runner
- pump
- acting section
- pump housing
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- 239000007788 liquid Substances 0.000 claims description 7
- 239000012188 paraffin wax Substances 0.000 claims description 5
- 229920006351 engineering plastic Polymers 0.000 claims description 4
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- 238000000465 moulding Methods 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229910001261 rose's metal Inorganic materials 0.000 claims description 4
- 229910000634 wood's metal Inorganic materials 0.000 claims description 4
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- 238000005086 pumping Methods 0.000 description 3
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Abstract
The invention provides an electromagnetic pump for driving conductive fluid, which comprises a pump body, a guide pipe and an electrode, wherein the pump body is provided with a through hole; the through hole is used as a flow passage of the conductive fluid; the flow passage comprises an action section arranged in a magnetic field; the pump body is formed in one piece and is integrated with the guide pipe when the pump body is formed; and the guide pipe is communicated with two ends of the flow passage. Meanwhile, the invention also provides a manufacturing method of the electromagnetic pump. The invention has the technical effect that the pump body of the electromagnetic pump has excellent sealing property. In the invention, the transition section of the flow passage is parallel with the action section, thereby realizing the smooth transition from the flow passage to the guide pipe, so that the flow resistance of the fluid in the flow passage is greatly reduced. In addition, the manufacturing method of the invention is relatively simple; compared with the current electromagnetic pump, the electromagnetic pump of the invention has better controllable machining precision; and when the electromagnetic pump of the invention is manufactured from the magnet the same as the magnet for manufacturing the current electromagnetic pump, the volume is smaller, and the provided static pressure is higher.
Description
Technical field
The invention belongs to the fluid pump field, specifically, the present invention relates to a kind of electromagnetic pump and preparation method thereof.
Background technology
Along with the continuous lifting of various chip performances, corresponding power consumption increases fast in recent years, and in the power that chip consumed, thermosteresis has occupied the overwhelming majority.The constantly soaring possibility that will increase chip failure of thermosteresis power.Therefore, if there are not effective heat management means, will cause chip reliability reduction, the lost of life, severe patient also can cause chip failure even burn.In order to tackle the problem of chip thermosteresis flash-up, prevent chip overheating, the researcher has developed a large amount of chip cooling technology, comprise that heat pipe is in conjunction with air-cooled, liquid cooling, the submergence evaporative cooling, spray cooling, thermoelectric cooling, vapour compression refrigeration etc., wherein Liu of Physical Chemistry Technology Inst., Chinese Academy of Sciences liquid metal chip cooling technology of waiting quietly proposing in 2002 (can be referring to Chinese patent " a kind of radiating device of chip radiation ", the patent No. 02257291.0) caused extensive concern both domestic and external, this technology has low in energy consumption, noiselessness, advantages such as excellent performance have become the chip cooling field and have had one of advanced technology of development prospect.Focusing on of this technology is the driving that realizes the liquid towards metal.Liquid metal is a kind of conductive dense fluids, all adopts large-scale high temperature resistant direct-current electromagnetic pump to drive in nuclear power and electrolytic aluminium industry, and what be applied to that chip cooling relates to is the small electrical magnetic pumping that uses under the normal temperature.The electromagnetic pump that adopts in the liquid metal heat radiation system that Liu Jing proposes (can referring to Chinese patent " the liquid metal chip radiator that adopts thermoelectricity-electromagnetic pump to drive ", patent No. 200420072948.X) has solved the problem of electromagnetic pump miniaturization to a certain extent.But this electromagnetic pump is actually by a plurality of parts assembly units and bonds together, and all has deficiency in the insulation of electrode and magnet and shell and the seal aspect of runner; In addition, the flow channel shape of above-mentioned electromagnetic pump may cause the excessive problem of resistance in some cases.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of simple in structure, volume is little, sealing is good, lower resistance, high efficiency electromagnetic pump.
Another object of the present invention provides a kind of method of using brand-new technology to make electromagnetic pump.
For realizing above-mentioned first goal of the invention, the electromagnetic pump that is used to drive conductor fluid provided by the invention comprises the pump housing, skirt and electrode, and described pump housing cast forms, have the runner that utilizes expendable material to form in the pump housing, described runner comprises the acting section that places the flat in the magnetic field; Described skirt embeds in the pump housing and is communicated with described runner two ends; Described electrode embeds the pump housing and stretches into the both sides of described runner acting section.
In the technique scheme, described runner also comprises the changeover portion between described acting section and skirt, and the cross sectional shape of described changeover portion is carried out the transition to the cross sectional shape of skirt smoothly by the acting section cross sectional shape.
In the technique scheme, described magnetic field is provided by magnet and magnetic conductive part, and the two poles of the earth of described magnet embed the magnetic gap that forms flat in the described pump housing; The acting section of described runner places in the described magnetic gap.
In the technique scheme, described electrode is made up of electrode slice and lead-in wire, and described electrode slice is wrapped in described pump housing inside fully, and the electrode slice of positive and negative polarities stretches into the both sides of described runner acting section respectively; Described lead-in wire one end is connected with electrode slice, and the other end is drawn from pump housing inside to connect power supply circuits.
In the technique scheme, described runner acting section is prolate side's bodily form, and length is 5 millimeters-20 millimeters, and wide is 5 millimeters-20 millimeters, and thickness is 500 nanometers-10 millimeter.
In the technique scheme, the outer contour in described changeover portion vertical section is straight line or camber line.
In the technique scheme, the thickness of described magnetic gap is 600 nanometers-20 millimeter.
In the technique scheme, the mould material that forms the described pump housing is a transparent material.
In the technique scheme, the mould material that forms the described pump housing is epoxy resin or engineering plastics.
In the technique scheme, described expendable material is paraffin or low-melting-point metal.Described low-melting-point metal can be Wood's metal or rose metal.
For realizing above-mentioned another goal of the invention, electromagnetic pump manufacture method provided by the invention comprises the steps:
1) be flow channel shape with the expendable material solidifying and setting, described runner has the acting section of a flat at least;
2) expendable material after will finalizing the design is as for mould inside;
3) skirt is inserted the two ends of described runner shape expendable material, electrode is embedded the flat part of expendable material from both sides;
4) the liquid pouring material that will be used to form the pump housing is sent in the mould, treats that mould is filled to be placed in room temperature or the hot environment to solidify;
5) after the material cured to be cast, remove mould, remove described expendable material;
6) around the runner acting section, lay magnetic field.
In the technique scheme, in the described step 1), described runner also comprises the changeover portion between described acting section and skirt, and the cross sectional shape of described changeover portion is carried out the transition to the cross sectional shape of skirt smoothly by the acting section cross sectional shape.
In the technique scheme, in described step 1) and the step 5), described expendable material is paraffin or low-melting-point metal.Described low-melting-point metal can be Wood's metal or rose metal.
In the technique scheme, in the described step 6), described magnetic field is provided by magnet and magnetic conductive part, and the two poles of the earth of described magnet embed the magnetic gap that forms flat in the described pump housing; The acting section of described runner places in the described magnetic gap; In the described step 1), comprise that also solidifying and setting is the expendable material of magnet shape, be used on the pump housing, forming the groove that embeds described magnet.
In the technique scheme, in the described step 3), the part of described skirt stretches into mould inside, and groove is carved with in the outer ring of stretching into the mould inside part.
The present invention has following technique effect: the pump housing of the present invention has excellent sealing property.Runner changeover portion of the present invention is parallel with acting section, realized runner to the seamlessly transitting of skirt, and makes that the flow resistance of liquid significantly reduces in the runner.In addition, manufacture method of the present invention is comparatively simple, and existing electromagnetic pump has better may command machining accuracy, and when using same magnet to make, volume is littler, and the static pressure that is provided is higher.
Description of drawings
Below, describe embodiments of the invention in conjunction with the accompanying drawings in detail, wherein:
Fig. 1 is axle geodesic structure schematic diagram such as of the present invention (pump housing is that transparent material is made);
Fig. 2 is schematic top plan view of the present invention (permanent magnet and magnetic conductive part are not installed);
Fig. 3 is an A-A cross-sectional view of the present invention.
Wherein: 1 is that the pump housing 2 is magnetic conductive part for electrode 4 for magnet 5 for skirt 3
6 is that acting section 7 is lead-in wire for changeover portion 8 for electrode slice 9
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing and specific embodiments.
Present embodiment is a kind of electromagnetic pump that is used to drive the movement-less part of conductor fluid, and this electromagnetic pump can drive low melting point liquid metal or other conductor fluid, can be used for the heat radiation of electronic chip or other power devices.
The operation principle of present embodiment is: the runner that conductor fluid is set between the magnetic gap of the two magnet N utmost points and the S utmost point, when the electrode to the runner left and right sides passes to direct current, to produce electric current perpendicular to magnetic direction, thereby produce the electromagnetic force that can propelling fluid flows, the direction of electromagnetic force is by magnetic field and sense of current decision.
In conjunction with reference to figure 1,2 and 3, the electromagnetic pump structure of present embodiment is as follows: the pump housing 1 of electromagnetic pump is cuboid, form by transparent epoxy resin or engineering plastics cast, the pump housing 1 inside has hollow duct, it is flat rectangular-shaped that runner acting section 6 cross sections are, so that the magnetic gap of two blocks of magnet is as far as possible little up and down, field intensity is big as far as possible, the vertical section outline of runner changeover portion 7 is shape or arc linearly, also can cancel changeover portion to reduce pump housing size.The length of acting section 6 is 5 millimeters-20 millimeters, and wide is 5 millimeters-20 millimeters, and thickness (highly) is 500 nanometers-10 millimeter.Consider factors such as difficulty of processing and runner transition resistance, the thickness preferable range of acting section 6 is 0.5 millimeter-3 millimeters.Runner is imported and exported and is linked to each other with two skirts 2 respectively, and skirt 2 is partially submerged in the pump housing.The pump housing 1 upper and lower surface respectively has a groove to place magnet 4, is filled with the skim mould material between groove and the runner, makes the insulation of magnet and conductor fluid, and the thickness that this mould material thin layer is suitable is 0.5 millimeter-1 millimeter.The electrode slice 8 of two electrodes 3 stretches in the runner from the left and right sides, and electrode slice 8 embeds the pump housing fully, insulate fully with other conductive structures.Magnetic conductive part 5 is loaded on magnet 4 peripheries so that the magnetic field sealing.
Described magnet 4 can be a magnet, and magnet size can be adjusted according to required pump head size.Runner acting section 6 all can be adjusted according to the systemic resistance size with the size and dimension of changeover portion 7, when pump is enough to provide system to move required pressure head, can cancel changeover portion to shorten the length of the pump housing 1.More than adjust and realize by the size and the profile that change expendable material.In addition, pump housing profile also can change according to needs attractive in appearance, revises casting mold and promptly can be made into multiple patterns such as prismatic, cylindrical, elliposoidal.
The electromagnetic pump manufacture method of present embodiment comprises the steps:
1) be flow channel shape with the expendable material solidifying and setting, described runner has the acting section of a flat at least.Described expendable material is paraffin or low-melting-point metal etc., can adopt manual cutting or machining process moulding, when needs are produced in batches, also can adopt the method moulding of die casting or die casting.Described expendable material and pour mass can not react, and are easy to after dissolving remove.
2) expendable material after will finalizing the design is as for mould inside.Described mould is made by poly-PTFE, does not react with mould material and sticking sticking.Electrode, skirt and expendable material all adopt 704 silicon rubber to be fixed on the mould.
3) skirt is inserted the two ends of described runner shape expendable material, electrode is embedded the flat part of expendable material from both sides.In the present embodiment, described mould material is epoxy resin or engineering plastics etc., and fiber that can be by adding materials such as glass, pottery or powder are to improve its intensity and toughness.The outer ring of described skirt embedding pump housing part is carved with groove and is got loose from pour mass to prevent skirt.Described electrode is made by low resistivity material, and guarantees can not corroded by conductor fluid that carried.
4) the liquid pouring material that will be used to form the pump housing is sent in the mould, treats that mould is filled to be placed in room temperature or the hot environment to solidify.
5) after the material cured to be cast, remove mould, remove described expendable material with chemistry or material resources method.
6) around the runner acting section, lay magnetic field.Described magnet can be that permanent magnet also can be an electromagnet.Described magnetic conductive part is made by high permeability material, and as electrical pure iron, mild steel etc., thickness is the 2-10 millimeter.
Present embodiment except that hollow duct, does not have any air gap and communicates with the external world after pump housing moulding, and the electrode stage casing also is completely wrapped in the pump housing, makes fluid leak free possible.And the runner of existing assembling electromagnetic pump is to piece together bonding forming by a plurality of assemblies, electrode is also stretched into by the runner crack of punching in both sides and is bonding, smear the inhomogeneous or very few fluid that may cause as viscose glue and sternly do not leak because of gap sealing, mistake may cause electrode to be encased by viscose glue at most and make circuit breaker.The produced runner changeover portion of the present invention is parallel with acting section, and existing electromagnetic pump is limited to the difficulty of machining, its changeover portion and acting section are angled, make that its local resistance is big and processing cost is high, after tested, when rate of flow of fluid surpassed 0.15 metre per second (m/s), the flow resistance of electromagnetic pump of the present invention was lower than 1/2nd of traditional electrical magnetic pumping.In addition, manufacture method of the present invention is comparatively simple, and early stage electromagnetic pump can better be controlled machining accuracy, and when using same magnet to make, volume is littler, the static pressure that is provided higher (can reach after tested traditional electrical magnetic pumping 1.3 times).
It should be noted last that above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although the present invention is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (16)
1. an electromagnetic pump that is used to drive conductor fluid comprises the pump housing, skirt and electrode, it is characterized in that, the described pump housing has through hole, and this through hole is as the runner of conducting liquid, and described runner comprises the acting section that places in the magnetic field; Described pump housing one-shot forming and when moulding and described skirt form one, described skirt is communicated with described runner two ends.
2. the electromagnetic pump that is used to drive conductor fluid according to claim 1, it is characterized in that, described runner acting section is a flat, described runner also comprises the changeover portion between described acting section and skirt, and the cross sectional shape of described changeover portion is carried out the transition to the cross sectional shape of skirt smoothly by the acting section cross sectional shape.
3. the electromagnetic pump that is used to drive conductor fluid according to claim 1 is characterized in that described magnetic field is provided by magnet and magnetic conductive part, and the two poles of the earth of described magnet embed the magnetic gap that forms flat in the described pump housing; The acting section of described runner places in the described magnetic gap.
4. the electromagnetic pump that is used to drive conductor fluid according to claim 2, it is characterized in that, described electrode is made up of electrode slice and lead-in wire, and described electrode slice is wrapped in described pump housing inside fully, and the electrode slice of positive and negative polarities stretches into the both sides of described runner acting section respectively; Described lead-in wire one end is connected with electrode slice, and the other end is drawn from pump housing inside to connect power supply circuits.
5. the electromagnetic pump that is used to drive conductor fluid according to claim 1 is characterized in that, described runner acting section is prolate side's bodily form, and length is 5 millimeters-20 millimeters, and wide is 5 millimeters-20 millimeters, and thickness is 500 nanometers-10 millimeter.
6. the electromagnetic pump that is used to drive conductor fluid according to claim 2 is characterized in that, the outer contour in described changeover portion vertical section is straight line or camber line.
7. the electromagnetic pump that is used to drive conductor fluid according to claim 3 is characterized in that, the thickness of described magnetic gap is 600 nanometers-20 millimeter.
8. the electromagnetic pump that is used to drive conductor fluid according to claim 1 is characterized in that, the mould material that forms the described pump housing is a transparent material.
9. the electromagnetic pump that is used to drive conductor fluid according to claim 1 is characterized in that, the mould material that forms the described pump housing is epoxy resin or engineering plastics.
10. the electromagnetic pump that is used to drive conductor fluid according to claim 1 is characterized in that, described expendable material is paraffin, Wood's metal or rose metal.
11. the electromagnetic pump that is used to drive conductor fluid according to claim 1 is characterized in that, described magnet is permanent magnet or electromagnet.
12. the manufacture method of an electromagnetic pump is characterized in that, comprises the steps:
1) be flow channel shape with the expendable material solidifying and setting, described runner has an acting section at least;
2) expendable material after will finalizing the design is as for mould inside;
3) skirt is inserted the two ends of described runner shape expendable material, electrode is embedded expendable material from both sides;
4) the liquid pouring material that will be used to form the pump housing is sent in the mould, treats that mould is filled to be placed in room temperature or the hot environment to solidify;
5) after the material cured to be cast, remove mould, remove described expendable material;
6) around the runner acting section, lay magnetic field.
13. the method for making electromagnetic pump according to claim 12, it is characterized in that, in the described step 1), the acting section of described runner is a flat, described runner also comprises the changeover portion between described acting section and skirt, and the cross sectional shape of described changeover portion is carried out the transition to the cross sectional shape of skirt smoothly by the acting section cross sectional shape.
14. the method for making electromagnetic pump according to claim 12 is characterized in that, in described step 1) and the step 5), described expendable material is paraffin, Wood's metal or rose metal.
15. the method for making electromagnetic pump according to claim 12 is characterized in that, in the described step 6), described magnetic field is provided by magnet and magnetic conductive part, and the two poles of the earth of described magnet embed the magnetic gap that forms flat in the described pump housing; The acting section of described runner places in the described magnetic gap; In the described step 1), comprise that also solidifying and setting is the expendable material of magnet shape, be used on the pump housing, forming the groove that embeds described magnet.
16. the method for making electromagnetic pump according to claim 12 is characterized in that, in the described step 3), the part of described skirt stretches into mould inside, and groove is carved with in the outer ring of stretching into the mould inside part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102270461A CN101741218B (en) | 2008-11-20 | 2008-11-20 | Electromagnetic pump for driving conductive fluid and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102270461A CN101741218B (en) | 2008-11-20 | 2008-11-20 | Electromagnetic pump for driving conductive fluid and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101741218A true CN101741218A (en) | 2010-06-16 |
| CN101741218B CN101741218B (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102270461A Active CN101741218B (en) | 2008-11-20 | 2008-11-20 | Electromagnetic pump for driving conductive fluid and manufacturing method thereof |
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| Country | Link |
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| CN (1) | CN101741218B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139763A (en) * | 2011-01-30 | 2011-08-03 | 贾龙 | Electromagnetic gas fluid decompression and propulsion device |
| CN102957300A (en) * | 2011-08-24 | 2013-03-06 | 中国科学院理化技术研究所 | Electromagnetic pump |
| CN103864000A (en) * | 2014-02-28 | 2014-06-18 | 西南交通大学 | Mini electric conjugate fluid pump |
| CN106685179A (en) * | 2017-01-17 | 2017-05-17 | 西安交通大学 | Permanent-magnet high-temperature liquid-state metal electromagnetic pump |
| CN107834806A (en) * | 2017-10-16 | 2018-03-23 | 华南理工大学 | A kind of through type bipolar electrode piece electrohydrodynamic Micropump and method |
| CN111865038A (en) * | 2020-07-02 | 2020-10-30 | 中国科学院电工研究所 | High-efficient liquid metal magnetofluid pump |
| CN118017795A (en) * | 2024-04-08 | 2024-05-10 | 浙江大学 | Induction electromagnetic pump |
Family Cites Families (3)
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| CN1360153A (en) * | 2002-01-24 | 2002-07-24 | 天津大学 | Electromagnetic pump |
| CN2736933Y (en) * | 2004-07-02 | 2005-10-26 | 中国科学院理化技术研究所 | Thermoelectric-electromagnetic pump driven liquid metal chip radiator |
| CN2784622Y (en) * | 2005-04-11 | 2006-05-31 | 天津市瑞德螺杆泵制造技术有限公司 | Cast pump body for horizontal double-suction double-screw pump |
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2008
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139763A (en) * | 2011-01-30 | 2011-08-03 | 贾龙 | Electromagnetic gas fluid decompression and propulsion device |
| CN102957300A (en) * | 2011-08-24 | 2013-03-06 | 中国科学院理化技术研究所 | Electromagnetic pump |
| CN102957300B (en) * | 2011-08-24 | 2015-08-05 | 中国科学院理化技术研究所 | Electromagnetic pump |
| CN103864000A (en) * | 2014-02-28 | 2014-06-18 | 西南交通大学 | Mini electric conjugate fluid pump |
| CN103864000B (en) * | 2014-02-28 | 2016-02-03 | 西南交通大学 | A kind of electric conjugation fluidic micropumps |
| CN106685179A (en) * | 2017-01-17 | 2017-05-17 | 西安交通大学 | Permanent-magnet high-temperature liquid-state metal electromagnetic pump |
| CN107834806A (en) * | 2017-10-16 | 2018-03-23 | 华南理工大学 | A kind of through type bipolar electrode piece electrohydrodynamic Micropump and method |
| CN111865038A (en) * | 2020-07-02 | 2020-10-30 | 中国科学院电工研究所 | High-efficient liquid metal magnetofluid pump |
| CN118017795A (en) * | 2024-04-08 | 2024-05-10 | 浙江大学 | Induction electromagnetic pump |
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|---|---|
| CN101741218B (en) | 2012-08-22 |
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