CN103041740A - Electromagnetic heating type direct electromagnet drive magnetic stirrer - Google Patents
Electromagnetic heating type direct electromagnet drive magnetic stirrer Download PDFInfo
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- CN103041740A CN103041740A CN2012105898055A CN201210589805A CN103041740A CN 103041740 A CN103041740 A CN 103041740A CN 2012105898055 A CN2012105898055 A CN 2012105898055A CN 201210589805 A CN201210589805 A CN 201210589805A CN 103041740 A CN103041740 A CN 103041740A
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Abstract
The invention discloses an electromagnetic heating type direct electromagnet drive magnetic stirrer, which comprises a housing, a heating plate provided with round holes, a non-magnetic cylindrical metal box embedded in the middle of the round holes, a multipolar drive electromagnet, a heat-insulating plate, coils, magnetic strips and control circuits, wherein the coils are helically wound on a plane, fixedly mounted under the heating plate and electrically connected with the control circuits; the heat-insulating plate is fixedly mounted between the heating plate and each coil; and the magnetic strips are mounted outside the coils. The electromagnet direct-drive magnetic stirrer has the advantages and benefits as follows: an alternating magnetic field is generated by the coils to enable the heating plate to generate eddy current for heating; the heat-insulating plate is thin; the gap between the heating plate and each coil is small; the electromagnetic conversion efficiency is high; meanwhile, electricity and heat are fully isolated, so that the safety performance is improved; the magnetic stirrer is directly driven by a rotary magnetic field generated by an electromagnet, so that intermediate links are reduced and the conversion efficiency is improved; and as the electromagnet can obtain magnetic field intensity higher than that of a permanent magnet, the stirring torque can be greatly increased and the applicability is higher.
Description
Technical field
The present invention relates to heating and stirring device, particularly a kind of electromagnetic heating type electromagnet directly drives magnetic stirring apparatus.
Background technology
The electric heating magnetic stirring apparatus is applicable to stirring, heating or agitating heating to carry out simultaneously, and being applicable to viscosity is not very large liquid or solidliquid mixture.During use stirrer is put into liquid in container, after producing rotating excitation field under the heating plate, become the circumference shuttling movement to reach the purpose of agitated liquid thereby drive stirrer.Cooperate temperature control equipment, can and keep sample temperature according to concrete requirement of experiment control, help the experimenter to set experiment condition, improved greatly the repeatability of experiment.Chemistry, medical science, Biochemical Lab, the analysis room of school, the widely used heating liquid agitating device in laboratory of the scientific research departments such as biology, heredity, medicine, environment-friendly laboratory and food, epidemic prevention, medical treatment.
The electrical heating magnetic stirring apparatus that uses at present comprises base, control circuit, heating plate, heater element and rotary magnet, wherein heating plate generally adopts the nickel-cadmium heating wire as exothermic material with heater element,, place under the heating plate as insulating barrier wrapping in the outside with mica sheet again after the nickel-cadmium heating wire is on the mica sheet as insulating materials with high temperature resistant mica sheet; Heater element is communicated with control circuit, and control circuit is by the break-make of electric current or the size of the electric current that control is passed through in the temperature controller control heater element, with the temperature that keeps heating plate in suitable temperature.The heater element that this class electrical heating magnetic stirring apparatus adopts is resistance element, not only the thermal efficiency is lower, and the heater element of electric heating one and panel, housing contacts are close, especially under the high temperature insulating materials easily inefficacy can cause heating plate, housing charged, personal injury accident easily occurs; Magnetic stirring apparatus adopts the rotation of motor drives permanent magnet to produce rotating excitation field, and mixing torque is little, and has during the motor operation noise, failure rate of machinery high.
Summary of the invention
Purpose of the present invention is exactly the defects that will overcome prior art, provides a kind of efficient, safe electromagnetic heating type electromagnet directly to drive magnetic stirring apparatus.
For achieving the above object, electromagnetic heating type electromagnet provided by the invention directly drives magnetic stirring apparatus, the cylindrical metal box, the multipole DM that comprise the nonmagnetic substance of inlaying in the middle of shell, the round-meshed heating plate of Intermediate Gray and the circular hole also comprise control circuit in the described shell and heat-insulating shield, coil and the magnetic stripe under the described heating plate; It is characterized in that: produce alternating magnetic field by coil and make heating plate produce eddy-current heating; The round-meshed heating plate of described Intermediate Gray is bearing in the top of described shell, described multipole DM occupy the circular hole intermediate support and links to each other in the cylindrical metal box of described nonmagnetic substance and with described control circuit electricity, described coil in one plane is the spiral form coiling, be fixedly mounted on the following of described heating plate and link to each other with described control circuit electricity, described heat-insulating shield is fixedly mounted between described heating plate and the described coil, and magnetic stripe is equipped with in the outside of described coil.The cylindrical metal box of the nonmagnetic substance of inlaying in the middle of the heating plate circular hole can also conduct heat energy and make the center of heating plate 2 not have the heated blank district not affect the conduction of rotating excitation field simultaneously except the multipole DM of supporting.
Electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus, and wherein said multipole DM adopts the U-shaped iron core stack of 2,3 or 4 differing heights, and 4,6 or 8 iron core column are evenly distributed on the concentric circumference; Two iron core column of each U-shaped iron core respectively are wound with a magnet exciting coil, each iron core column magnet exciting coil around to and the sense of current that passes through make it all to produce magnetic pole of the same name such as the N utmost point, each iron core column magnet exciting coil links to each other with the control circuit electricity respectively, control circuit is successively in turn for being evenly distributed on each the iron core column magnet exciting coil power supply on the concentric circumference, power this iron core column of a certain moment one iron core column magnet exciting coil produces the N utmost point, another iron core column of the U-shaped iron core that is attached thereto then produces the synonyms pole S utmost point, next constantly adjacent iron core column magnet exciting coil this iron core column of powering produce the N utmost point, another iron core column of the U-shaped iron core that is attached thereto then produces the synonyms pole S utmost point ..., so going round and beginning again has just produced rotating excitation field.
Electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus, and the U-shaped iron core of wherein said multipole DM adopts pure iron.
Electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus, and wherein said heating plate adopts ferrimagnet to make, and is the magnetic stainless steel material.
Electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus, the cross section diameter of the used wire of wherein said coil is 4.5 millimeters, close by the stranded rear outside of the high temperature resistant enamel covered wire of multiply is that 0.5 millimeter glass wire parcel forms around one deck diameter, and the appearance of described coil has resin-sealed layer.
Electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus, and wherein said heat-insulating shield is glass mat or asbestos board, and its thickness is less than 3 millimeters.
Electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus, and the material of the cylindrical metal box of wherein said nonmagnetic substance is aluminium, copper, non-magnetic stainless steel.
Advantage and good effect that electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus are: make heating plate generation eddy current that heating plate is heated up owing to produce alternating magnetic field by coil, heating plate is exactly heater, so thermal inertia is little, rapidly heating-cooling of heating plate behind the switching electricity.Heat-insulating shield adopts glass mat or asbestos board to consist of, its thin thickness, and heating plate and coil gap are less, so electromagnetic conversion efficient is higher, more save electric energy, and be easy to maintenance, long service life.Simultaneously because the coil integral sealing and and heating plate between nonmetallic heat-insulating shield is arranged, electric heating is isolated fully, thereby security performance improves greatly, has guaranteed user's personal safety.
Be elaborated with reference to accompanying drawing below in conjunction with embodiment.
Description of drawings
Fig. 1 is that the master that electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus embodiment looks cutaway view;
Fig. 2 is that 2 U-shaped 4 iron core column of iron core stack and magnet exciting coil are evenly distributed on top view on the concentric circumference;
Fig. 3 is that 3 U-shaped 6 iron core column of iron core stack and magnet exciting coil are evenly distributed on top view on the concentric circumference;
Fig. 4 is that 4 U-shaped 8 iron core column of iron core stack and magnet exciting coil are evenly distributed on top view on the concentric circumference.
The specific embodiment
Describe the embodiment that electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus in detail below in conjunction with accompanying drawing.
With reference to Fig. 1, electromagnetic heating type electromagnet provided by the invention directly drives magnetic stirring apparatus, the cylindrical metal box 3, the multipole DM 4 that comprise the nonmagnetic substance of inlaying in the middle of shell 1, the round-meshed heating plate 2 of Intermediate Gray and the circular hole, also comprise and described heating plate 2 under heat-insulating shield 5, coil 6, magnetic stripe 7 and described shell 1 in control circuit 8; It is characterized in that: produce alternating magnetic field by coil 6 and make heating plate 2 produce eddy-current heating; Described heating plate 2 is bearing in the top of described shell 1, described multipole DM 4 occupy the circular hole intermediate support and links to each other in the cylindrical metal box 3 of described nonmagnetic substance and with described control circuit 8 electricity, described coil 6 in one plane is the spiral form coiling, be fixedly mounted on the following of described heating plate 2 and link to each other with described control circuit 8 electricity, described heat-insulating shield 5 is fixedly mounted between described heating plate 2 and the described coil 6, and magnetic stripe 7 is equipped with in the outside of described coil 6.The cylindrical metal box 3 of the nonmagnetic substance of inlaying in the middle of the heating plate circular hole can also conduct heat energy and make the center of heating plate 2 not have the heated blank district not affect the conduction of rotating excitation field simultaneously except the multipole DM 4 of supporting.
With reference to Fig. 2, Fig. 3, Fig. 4, electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus, wherein said multipole DM 4 adopts U-shaped iron core 41 stacks of 2,3 or 4 differing heights, and 4,6 or 8 iron core column are evenly distributed on the concentric circumference; Two iron core column of each U-shaped iron core 41 respectively are wound with a magnet exciting coil 42, each iron core column magnet exciting coil 42 around to and the sense of current that passes through make it all to produce magnetic pole of the same name such as the N utmost point, each iron core column magnet exciting coil 42 links to each other with control circuit 8 electricity respectively, and control circuit 8 produces rotating excitation field for each iron core column magnet exciting coil 42 power supply that is evenly distributed on the concentric circumference successively in turn.Below with 3 U-shaped iron cores 41,6 iron core column are that example describes in detail, 6 iron core column contain magnet exciting coil and are denoted as successively A, B, C, D, E, F, a certain moment A iron core column magnet exciting coil 42 power supply A iron core column produce the N utmost point, another iron core column D of the U-shaped iron core 41 that is attached thereto then produces the synonyms pole S utmost point, next is the B iron core column magnet exciting coil 42 power supply B iron core column generation N utmost points constantly, another iron core column E of the U-shaped iron core 41 that is attached thereto then produces the synonyms pole S utmost point, then the C iron core column produces the N utmost point, F produces the synonyms pole S utmost point simultaneously, then the D iron core column produces the N utmost point, A produces the synonyms pole S utmost point simultaneously, the E iron core column produces the N utmost point thereupon, B produces the synonyms pole S utmost point simultaneously, last F iron core column produces the N utmost point, C produces the synonyms pole S utmost point simultaneously, then begin a new circulation ..., so going round and beginning again has just produced rotating excitation field.
Electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus, and the U-shaped iron core 41 of wherein said multipole DM 4 adopts pure iron.
Electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus, and wherein said heating plate 2 adopts ferrimagnet to make, and is the magnetic stainless steel material.
Electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus, the cross section diameter of wherein said coil 6 used wires is 4.5 millimeters, close by the stranded rear outside of the high temperature resistant enamel covered wire of multiply is that 0.5 millimeter glass wire parcel forms around one deck diameter, and the appearance of described coil has resin-sealed layer.
Electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus, and wherein said heat-insulating shield 5 is glass mat or asbestos board, and its thickness is less than 3 millimeters.
Electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus, and the material of the cylindrical metal box 3 of wherein said nonmagnetic substance is aluminium, copper, non-magnetic stainless steel.
Directly drive among the embodiment of magnetic stirring apparatus at electromagnetic heating type electromagnet of the present invention, the temperature control part in the control circuit is similar with the electric heating magnetic stirring apparatus of prior art, comes the break-make of control circuit or the size of the electric current that control is passed through by temperature controller; The circuit of control coil is similar with the widely used control circuit of prior art electromagnetic oven, can be according to actual needs simplified on the multistage adjusting of power output and testing circuit.
Advantage and good effect that electromagnetic heating type electromagnet of the present invention directly drives magnetic stirring apparatus are: make heating plate generation eddy current that heating plate is heated up owing to produce alternating magnetic field by coil, heating plate is exactly heater, so thermal inertia is little, rapidly heating-cooling of heating plate behind the switching electricity.Heat-insulating shield adopts glass mat or asbestos board to consist of, its thin thickness, and heating plate and coil gap are less, magnetic stripe is equipped with in the outside of coil, can effectively prevent the electromagnetic energy leakage, so electromagnetic conversion efficient is higher, more save electric energy, easy to maintenance, long service life; Simultaneously because the coil integral sealing and and heating plate between nonmetallic heat-insulating shield is arranged, electric heating is isolated fully, thereby security performance improves greatly, has guaranteed user's personal safety.
Magnetic agitation adopts electromagnet to produce rotating excitation field and directly drives, and has reduced the intermediate link of electric energy → mechanical energy → rotating excitation field, and conversion efficiency is improved.Because electromagnet can pass through regulation voltage, electric current obtains the magnetic field intensity greater than permanent magnet, so mixing torque can improve greatly, applicability is stronger simultaneously.
Owing to do not have the mechanical movement of motor, not only eliminated the noise when motor moves but also reduced fault rate.
Embodiment recited above is described preferred embodiment of the present invention, is not that the spirit and scope of the present invention are limited.Under the prerequisite that does not break away from design concept of the present invention; various modification and improvement that this area ordinary person makes technical scheme of the present invention; all should drop into protection scope of the present invention, the technology contents that the present invention asks for protection all is documented in claims.
Claims (7)
1. electromagnetic heating type electromagnet provided by the invention directly drives magnetic stirring apparatus, the cylindrical metal box (3), the multipole DM (4) that comprise the nonmagnetic substance of inlaying in the middle of shell (1), the round-meshed heating plate of Intermediate Gray (2) and the circular hole, also comprise and described heating plate (2) under heat-insulating shield (5), coil (6), magnetic stripe (7) and described shell (1) in control circuit (8); It is characterized in that: produce alternating magnetic field by coil (6) and make heating plate (2) produce eddy-current heating; Described heating plate (2) is bearing in the top of described shell (1), described multipole DM (4) is bearing in the cylindrical metal box (3) of described nonmagnetic substance and occupy in the middle of the circular hole, described coil (6) in one plane is the spiral form coiling, be fixedly mounted on the following of described heating plate (2) and link to each other with described control circuit (8) electricity, described heat-insulating shield (5) is fixedly mounted between described heating plate (2) and the described coil (6), and magnetic stripe (7) is equipped with in the outside of described coil (6).
2. electromagnetic heating type electromagnet according to claim 1 directly drives magnetic stirring apparatus, it is characterized in that: wherein said multipole DM (4) adopts U-shaped iron core (41) stack of 2,3 or 4 differing heights, and 4,6 or 8 iron core column are evenly distributed on the concentric circumference; Two iron core column of each U-shaped iron core (41) respectively are wound with a magnet exciting coil (42), each iron core column magnet exciting coil (42) around to and the sense of current that passes through make it all to produce magnetic pole of the same name such as the N utmost point, another iron core column of U-shaped iron core (41) produces synonyms pole such as the S utmost point, each iron core column magnet exciting coil (42) links to each other with control circuit (8) electricity respectively, and control circuit (8) produces rotating excitation field for each iron core column magnet exciting coil (42) power supply that is evenly distributed on the concentric circumference successively in turn.
3. electromagnetic heating type electromagnet according to claim 1 directly drives magnetic stirring apparatus, it is characterized in that: the material of the U-shaped iron core (41) of wherein said multipole DM (4) is pure iron.
4. electromagnetic heating type electromagnet according to claim 1 directly drives magnetic stirring apparatus, it is characterized in that: wherein said heating plate (2) adopts ferrimagnet to make, and is the magnetic stainless steel material.
5. electromagnetic heating type electromagnet according to claim 1 directly drives magnetic stirring apparatus, it is characterized in that: the cross section diameter of the used wire of wherein said coil (4) is 4.5 millimeters, close by the stranded rear outside of the high temperature resistant enamel covered wire of multiply is that 0.5 millimeter glass wire parcel forms around one deck diameter, and the appearance of described coil has resin-sealed layer.
6. electromagnetic heating type electromagnet according to claim 1 directly drives magnetic stirring apparatus, it is characterized in that: wherein said heat-insulating shield (3) is glass mat or asbestos board, and its thickness is less than 3 millimeters.
7. electromagnetic heating type electromagnet according to claim 1 directly drives magnetic stirring apparatus, it is characterized in that: the material of the cylindrical metal box (3) of wherein said nonmagnetic substance is aluminium, copper, non-magnetic stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210589805.5A CN103041740B (en) | 2012-12-16 | 2012-12-16 | Electromagnetic heating type electromagnet Direct driver magnetic stirring apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210589805.5A CN103041740B (en) | 2012-12-16 | 2012-12-16 | Electromagnetic heating type electromagnet Direct driver magnetic stirring apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN103041740A true CN103041740A (en) | 2013-04-17 |
| CN103041740B CN103041740B (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210589805.5A Expired - Fee Related CN103041740B (en) | 2012-12-16 | 2012-12-16 | Electromagnetic heating type electromagnet Direct driver magnetic stirring apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240966A (en) * | 2016-08-24 | 2016-12-21 | 济南浩隆生物科技有限公司 | A kind of Full-automatic culture medium filling machine |
| CN108126612A (en) * | 2016-12-01 | 2018-06-08 | 广州国睿科学仪器有限公司 | A kind of electromagnetic agitation component of magnetic stirring apparatus and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2411842Y (en) * | 2000-02-29 | 2000-12-27 | 陈妙凤 | Heating magnetic agitator |
| CN2838811Y (en) * | 2005-10-26 | 2006-11-22 | 秦皇岛首钢长白结晶器有限责任公司 | Electromagnetic mixer cooling device |
| CN201313043Y (en) * | 2009-04-16 | 2009-09-23 | 上海一恒科学仪器有限公司 | Constant-temperature heating magnetic stirring apparatus |
| CN201852269U (en) * | 2010-11-18 | 2011-06-01 | 苏州兆丰塑胶有限公司 | Heating device with stirring function |
-
2012
- 2012-12-16 CN CN201210589805.5A patent/CN103041740B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2411842Y (en) * | 2000-02-29 | 2000-12-27 | 陈妙凤 | Heating magnetic agitator |
| CN2838811Y (en) * | 2005-10-26 | 2006-11-22 | 秦皇岛首钢长白结晶器有限责任公司 | Electromagnetic mixer cooling device |
| CN201313043Y (en) * | 2009-04-16 | 2009-09-23 | 上海一恒科学仪器有限公司 | Constant-temperature heating magnetic stirring apparatus |
| CN201852269U (en) * | 2010-11-18 | 2011-06-01 | 苏州兆丰塑胶有限公司 | Heating device with stirring function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240966A (en) * | 2016-08-24 | 2016-12-21 | 济南浩隆生物科技有限公司 | A kind of Full-automatic culture medium filling machine |
| CN108126612A (en) * | 2016-12-01 | 2018-06-08 | 广州国睿科学仪器有限公司 | A kind of electromagnetic agitation component of magnetic stirring apparatus and preparation method thereof |
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| CN103041740B (en) | 2015-08-26 |
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