CN101728053A - Bistable electromagnetic driver and product with the same - Google Patents
Bistable electromagnetic driver and product with the same Download PDFInfo
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- CN101728053A CN101728053A CN200910161552A CN200910161552A CN101728053A CN 101728053 A CN101728053 A CN 101728053A CN 200910161552 A CN200910161552 A CN 200910161552A CN 200910161552 A CN200910161552 A CN 200910161552A CN 101728053 A CN101728053 A CN 101728053A
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Abstract
The present invention provides a bistable electromagnetic driver and a product with the same. The electromagnetic driver comprises the following components: a first permanent magnet (301); a second permanent magnet (302) which is equipped relatively to the first permanent magnet (301) and has same polarity with the first permanent magnet; a movable member (303) which is provided between the first permanent magnet (301) and the second permanent magnet (302) and is wound by excitation coil (304), wherein through exerting current with different directions to the excitation coil (304), the movable member (303) can move between the first permanent magnet (301) and the second permanent magnet (302). The bistable electromagnetic driver provided by the invention has the advantages of good stability and low energy consumption.
Description
Technical field
The present invention relates to electromagnetic driver, and relate in particular to a kind of high-efficiency and energy-saving type bistable electro magnetic driven device.
Background technology
Fig. 1 shows traditional electromagnetic driver, this electromagnetic driver comprises: movable part 11, fixture 12, the magnetizing coil 14 that is connected the spring 13 between movable part 11 and the fixture 12 and is positioned at described fixture, wherein, described movable part 11 and fixture 12 equal magnetic materials are made.When described magnetizing coil 14 charges, movable part 11 and fixture 12 mutual adhesives; When magnetizing coil 14 was not powered, movable part 11 was separated under the elastic force effect of spring 13 with fixture 12.Therefore, for movable part 11 and the fixture 12 that makes electromagnetic driver keeps attracting state, magnetizing coil 14 necessary continued powers, however its power consumption is very important.
Fig. 2 a and Fig. 2 b show existing locking type electromagnetic driver, the schematic diagram when wherein Fig. 2 a represents that electromagnetic driver is in release condition; Schematic diagram when Fig. 2 b represents that electromagnetic driver is in attracting state.This locking type electromagnetic driver comprises permanent magnet 21, is connected to a pair of fixture 22 (this fixture is made by magnetic material, and magnetic pole is respectively 22a and 22b), magnetizing coil 23, the movable part 24 (this movable part is made by magnetic material) at the two poles of the earth, north and south of permanent magnet 21 and the spring 25 that is connected to described movable part 24 respectively.Shown in Fig. 2 a, when magnetizing coil 23 is not charged, the elastic force (directions of arrow 26 representatives) that spring 25 produces is opposite with the magnetic force direction of permanent magnet 21, however elastic force greater than magnetic force, thereby make movable part 24 remain on the stable state that is separated with magnetic pole 22a and 22b.If magnetizing coil 22 energisings, the magnetic direction that magnetizing coil 22 produces is identical with the magnetic direction of permanent magnet 21, and then magnetic force is greater than the elastic force of spring 25, and movable part 24 and fixture 22 mutual adhesives are shown in Fig. 2 b.
When electromagnetic actuator device is in attracting state shown in Fig. 2 b, even the electric current of magnetizing coil 23 breaks, since between this moment permanent magnet 21 and the movable part 24 apart from than release condition the time between the two distance near, attraction when therefore the attraction of permanent magnet 21 can be than release condition is big, so make attracting state be maintained.On the other hand, if magnetizing coil 23 the produces magnetic field opposite with permanent magnet 21, magnetic is offset, and then movable part 24 is got back to initial release condition (shown in Fig. 2 a) by the elastic force of spring 25 generations.By this method of work, the electromagnetic driver of the type can be realized lock operation.
Yet above-mentioned two kinds of electromagnetic drivers have following shortcoming:
(1) need the number of ampere turns of magnetizing coil excessive.Particularly the enclosed type driver needs bigger number of ampere turns, and this is because the magnetic circuit in magnetizing coil generation magnetic field need cause through the very big permanent magnet of magnetic resistance.
(2) because required number of ampere turns is excessive, cause the energy consumption of magnetizing coil excessive.Especially traditional electromagnetic driver if need make movable part and fixture keep attracting state, must continue to the magnetizing coil power supply, and the energy consumption that produces in this is quite huge.
(3) because required number of ampere turns is excessive, cause the temperature of magnetizing coil in excitatory process, can significantly increase, thereby increase the volume of magnetizing coil.
(4) magnetic force of magnetizing coil generation need overcome the elastic force of spring, has obviously increased power consumption.
In addition, above-mentioned locking type electromagnetic driver also has following shortcoming separately:
A. this locking type electromagnetic driver is when discharging, and permanent magnet is in the opposing magnetic field of magnetizing coil generation fully, promptly is among the demagnetized state fully.Like this along with this closed electromagnetic driver constantly switches between adhesive and release condition, permanent magnet can be under the demagnetized state repeatedly, make permanent magnet be difficult to long-term maintenance permanent magnet magnetic force like this, thereby can have influence on the stability of this closed driver.
B. place the centre of fixture because of permanent magnet, under the situation that magnetizing coil is not powered, attract the magnetic field force of movable part by permanent magnet fixture to be magnetized the magnetic force of back generation with the movable part locking entirely.Permanent magnet magnetic force will be gone over by long magnetic circuit transmission, and obviously magnetic loss is bigger, can have the locking states problem of unstable like this.
U.S. Patent application 4752757 discloses a kind of three-stable state locking formula electromagnetic driver, though the more above-mentioned enclosed type electromagnetic driver of this three-stable state locking formula electromagnetic driver has certain technical advantage, but because of its strength that makes movable part change the position is the branch's magnetic circuit that derives from magnetizing coil institute exciting field, just toroid a component makes movable part change the position, obviously the exciting curent waste is bigger, and when movable part is arranged in stable state of three positions, its less stable, thereby require strict to operational environment such as acceleration vibratility.Moreover three-stable state enclosed type electromagnetic driver is not suitable for extensively being used in the electric equipment products of the tractive electromagnet that only needs two kinds of stable states, occasion when needs stable state more than three kinds or three kinds, the appliance switch that early existing more superior, more ripe stepping motor is made is as step switch, stepping relay.
In sum, above-mentioned electromagnetic driver all is in the defective of energy consumption height, poor stability.
Summary of the invention
For the above-mentioned defective of the electromagnetic driver that overcomes prior art, the present invention is special to propose that a kind of energy consumption is low, the electromagnetic driver of good stability.
Bistable electro magnetic driven device provided by the invention comprises: first permanent magnet; Second permanent magnet, this second permanent magnet and described first permanent magnet are oppositely arranged, and relative two have identical polarity; Movable part, this movable part is between described first permanent magnet and second permanent magnet, and it is peripheral around magnetizing coil is arranged, and by apply the electric current of different directions to this magnetizing coil, described movable part can move between described first permanent magnet and second permanent magnet.
The present invention also provides a kind of product that uses above-mentioned electromagnetic driver, and this product comprises contactor, relay, electromagnetically operated valve or electromagnetic lock.
Electromagnetic driver of the present invention has the advantage of following three aspects at least:
(1) electromagnetic driver of the present invention adopts two permanent magnet structures, when to the magnetizing coil loading current, movable part is magnetized, at this moment, in first permanent magnet and second permanent magnet one provides attraction, another person to provide and described attraction repulsive force in the same way to movable part to movable part, what can make movable part like this suffered makes a concerted effort very greatly, makes that whole electromagnetic driver is highly stable.
(2) can between described first permanent magnet and second permanent magnet, move owing to described movable part, therefore first permanent magnet and second permanent magnet also have certain space after holding movable part, thereby for having reserved passage in the magnetic field that magnetizing coil produces, make that the magnetic resistance of whole flux loop is very little, thereby only need very little exciting curent just can produce very strong magnetic field, overcome existing locking type electromagnetic driver owing to the magnetic circuit that magnetizing coil produces magnetic field need cause the excessive defective of number of ampere turns through the very big permanent magnet of magnetic resistance.
(3) owing to reserved passage to excitatory magnetic field, avoided permanent magnet for a long time and repeatedly be in demagnetized state, make the magnetic of permanent magnet be able to long-term maintenance, thereby prolong the life-span of whole electromagnetic driver greatly.
Description of drawings
Fig. 1 is the structural representation of traditional electromagnetic driver;
Fig. 2 a is the schematic diagram of existing locking type electromagnetic driver when being in release condition;
Fig. 2 b is the schematic diagram of existing locking type electromagnetic driver when being in attracting state;
Fig. 3 a is the vertical view of bistable electro magnetic driven device of the present invention;
Fig. 3 b is the profile along the A-A direction of bistable electro magnetic driven device of the present invention;
Fig. 4 a is the control circuit figure of bistable electro magnetic driven device of the present invention;
Fig. 4 b is the another kind of control circuit figure of bistable electro magnetic driven device of the present invention; And
Fig. 5 has been to use the circuit diagram of the contactor of bistable electro magnetic driven device of the present invention.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing.
Fig. 3 a is the vertical view of bistable electro magnetic driven device of the present invention, and Fig. 3 b is the profile along the A-A direction of bistable electro magnetic driven device of the present invention.Shown in Fig. 3 a and 3b, bistable electro magnetic driven device provided by the invention comprises: first permanent magnet 301; Second permanent magnet 302, this second permanent magnet 302 is oppositely arranged with described first permanent magnet 301, and relative two have identical polarity; Movable part 303, this movable part 303 is between described first permanent magnet 301 and second permanent magnet 302, and it is peripheral around magnetizing coil 304 is arranged, by apply the electric current of different directions to this magnetizing coil 304, described movable part 303 can move between described first permanent magnet 301 and second permanent magnet 302.Described first permanent magnet 301 and second permanent magnet 302 can be made by neodymium-iron-boron permanent magnet, and described movable part 303 can be by the little high-purity electrician's magnet of remaining remanent magnetism after excitatory, and for example Chinese label is the pure iron of DT3C or DT4C.
Generally, described electromagnetic driver also comprises magnetizing coil skeleton 305, and described magnetizing coil 304 is wrapped on the mandrel in this magnetizing coil skeleton 305.Described magnetizing coil 304 is reeled by enamelled wire (enamelled wire that for example, meets Chinese label QZ specification) and is made; Described magnetizing coil skeleton 305 can be made by bakelite, nylon or plastics, preferably adopts Chinese label fire-retardant Nylon 66.The lead riser 306 of described magnetizing coil 304 is drawn by lead riser holder 307, so that pass through this lead riser 306 to magnetizing coil 304 loading currents.Described lead riser 306 can be that multiply is moulded soft and soggy copper cash, and described lead riser holder 307 is made by insulating material.
Attract mutually with magnetizing coil 304 in magnetizing coil 304 excitatory processes for fear of movable part 303 and cause movable part 303 perpendicular to the skew on movable part 303 moving directions, to cause movable part 303 not move flexibly, preferably, described electromagnetic driver can also comprise magnetic shield 308, this magnetic shield 308 is between described movable part 303 and described magnetizing coil 304, be used to isolate the magnetic field of magnetizing coil 304, can not move flexibly thereby avoid movable part 303 to be subjected to magnetizing coil 304 power so that movable part 303 in a lateral direction perpendicular to movable part 303 moving directions.Described magnetic shield 308 is made by nonmagnetic substance (i.e. the material that can not be magnetized in magnetic field), for example metal materials such as plastics, epoxy resin and copper, aluminium.
At magnetic shield 308 under the situation of magnetic poor effect, movable part 303 may rub with magnetizing coil skeleton 305 because of the horizontal force that is subjected to magnetizing coil 304 in moving process, for make movable part 303 can access better cooperation when its moving process, reduce and magnetizing coil skeleton 305 between frictional force, preferably, described magnetic shield 308 is made by tin-phosphor bronze or aluminium.In addition, the magnetic shield of being made by tin-phosphor bronze or aluminium 308 also has good abrasion resistance.
Directly impinge upon at the volley on more crisp first permanent magnet 301 and second permanent magnet 302 for fear of movable part 303; preferably; described electromagnetic driver can also comprise shock-resistant 309; make by magnetic material for this shock-resistant 309; and be positioned on described first permanent magnet 301 or second permanent magnet 302 and 303 contacted of the described movable parts; be used for first permanent magnet 301 or second permanent magnet, 302 magnetic lines of force are concentrated at this shock-resistant 309; thereby make and to be magnetized with this shock-resistant 309 contacted movable part 303; and avoid described movable part 303 directly to strike on described first permanent magnet 301 or second permanent magnet 302, thereby can protect described first permanent magnet 301 or second permanent magnet 302.At this, this shock-resistant 309 also is positioned at described magnetic shield 308.
In order to make described shock-resistant 309 first permanent magnet 301 or second permanent magnet, 302 magnetic lines of force can be concentrated on this shock-resistant 309 effectively, to keep powerful magnetic pole, preferably, wherein, described shock-resistant 309 is electrical pure iron, and for example Chinese label is the pure iron of DT3C or DT4E.
Preferably, described electromagnetic driver can also comprise the magnetic cylinder, is used to hold described first permanent magnet 301, second permanent magnet 302 and movable part 303, and assembles the divergent magnetic field of described first permanent magnet 301 and second permanent magnet 302.Particularly, described magnetic cylinder is made up of cylinder body 310, upper end cover 311 and bottom end cover 312, upper end cover 311 and bottom end cover 312 for example can be fixed with cylinder body 310 by trip bolt 315, thereby in the magnetic cylinder, made up the environment of a sealing, to hold first permanent magnet 301, second permanent magnet 302, movable part 303, magnetizing coil 304, magnetizing coil skeleton 305, lead riser holder 307, magnetic shield 308 and shock-resistant 309.The cylinder body 310 of magnetic cylinder, upper end cover 311 and bottom end cover 312 also gather the work magnetic pole with the divergent magnetic field of first permanent magnet 301 and second permanent magnet 302 jointly, have improved the magnetic energy utilization rate of first permanent magnet 301 and second permanent magnet 302.Described cylinder body 310, upper end cover 311 and bottom end cover 312 are preferably made by Chinese label 10# mild steel.Here, described shock-resistant 309, first permanent magnet 301 and upper end cover 311 these threes are mutually permanently connected, shock-resistant 309, second permanent magnet 302 and bottom end cover 312 these threes are mutually permanently connected, described fixedly connected can the realization by variety of way, for example, can realize by rivet 313.
Described electromagnetic driver also comprises link rod 314, and this link rod 314 is fixedlyed connected with described movable part 303, is used for the driven object that electromagnetic driver is passed in power that movable part 303 is produced under the excitation of magnetizing coil 304 and displacement.Described link rod 314 is made by nonmagnetic substance, is preferably brass.Preferably, the described rivet 313 that is used for fixing shock-resistant 309, first permanent magnet 301 and upper end cover 311 and shock-resistant 309, second permanent magnet 302 and bottom end cover 312 is tubular rivet, and described link rod 314 stretches out from the magnetic cylinder by described tubular rivet.When utilizing described electromagnetic driver to drive the contact of relay or contactor, the travel(l)ing rest that described link rod 314 is produced movable part 303 under the excitation of magnetizing coil 304 power and displacement pass to contactor or relay causes the closing of contact or the disconnection of contactor or relay.
Shown in Fig. 4 a, described electromagnetic driver can also comprise start and stop button 316 and built-in reversing switch 317, and start and stop button 316 is used to control the electric current loading of this magnetizing coil 304; Built-in reversing switch 317 is connected between described start and stop button 316 and the described magnetizing coil 304, be used for when the each loading current of magnetizing coil 304, change the flow direction of the electric current in the magnetizing coil 304, this built-in reversing switch 317 can be installed in the lead riser holder 307 of magnetizing coil 304.
Shown in Fig. 4 b, described electromagnetic driver can comprise external reversing switch 318, and this external reversing switch 318 is electrically connected with described magnetizing coil 304, is used to control the electric current loading of this magnetizing coil 304 and the flow direction of the electric current that is loaded.Need to prove, in this embodiment, utilize external reversing switch 318 to substitute above-mentioned described start and stop button 316 and built-in reversing switch 317.
Above-mentioned dual mode all can be controlled the electric current loading of magnetizing coil 304 and the flow direction of institute's loading current easily, the user only need click start and stop button 316 or external reversing switch 318, just can give magnetizing coil 304 provide a DC pulse (40～50ms), thus make movable part 303 change positions and remain on this position.Above-mentioned " built-in " and " external " all be at reversing switch for the position of magnetic cylinder,, then be referred to as " external reversing switch " if reversing switch is positioned at the outside of magnetic cylinder; Otherwise, then be referred to as " built-in reversing switch ".
The operation circuit of bistable electro magnetic driven device of the present invention must direct current supply.If desired with bistable electromagnetic driver applications of the present invention in communication environment, then can make alternating current change direct current into by rectifier AC power, be connected with described magnetizing coil 304 again, and control loop (refers to use the device of bistable electro magnetic driven device of the present invention, motor for example) then can exchange or the direct current supply environment in work, do not need to be subjected to the DC operation environmental limit of bistable electro magnetic driven device.
The course of work of bistable electro magnetic driven device provided by the present invention is described below.Shown in Fig. 3 a, if movable part 303 and first permanent magnet, 301 stickings, we call initial position or primary importance to movable part present position 303 this moment.If movable part 303 and second permanent magnet, 302 stickings, we call the second place to movable part present position 303 this moment.When the magnetizing coil 304 of bistable electro magnetic driven device did not add exciting curent, movable part 303 always was in the primary importance or the second place.
When applying excitatory direct current (and this direct current make movable part 303 magnetized directions be that the upper end is that S, lower end are N) to magnetizing coil 304, movable part 303 becomes the magnet with polarity, it and first permanent magnet 301 and second permanent magnet 302 interact, the result of effect is that first permanent magnet 301 pushes away (repulsion) with movable part 303 toward the second place, and second permanent magnet 302 draws (attraction) to movable part 303 toward the second place again simultaneously.When movable part 303 be positioned at second permanent magnet 302 on shock-resistant 309 when contacting, movable part 303 can be by 302 magnetization of second permanent magnet, and have been attracted firmly; First permanent magnet 301 is still keeping certain repulsive force to movable part 303 simultaneously.This can be seen that what bistable electro magnetic driven device of the present invention can be highly stable is fixed on the position, therefore can be used to the environment of very severe.
When movable part 303 was in the second place, as long as the exciting curent direction is changed, the polarity of movable part 303 just can be reversed, and this moment, it can repel mutually with second permanent magnet 302, attracted mutually with first permanent magnet, thereby turned back to initial position immediately.Make movable part 303 change the general 40ms～50ms that only needs of application time of the required exciting curent in position.After this just no longer do not apply electric current as not needing to change movable part 303 positions, apply one time exciting curent when waiting to need to change the position again.Certainly requiring the size of exciting curent to be greater than here makes mobile 303 can break away from primary importance or the desired minimum current of the second place, i.e. critical current.Introduce the computational process of critical current below.
The calculating of critical current
As shown in Figure 3, movable part 303 stably is in primary importance.Suppose that first permanent magnet 301 and second permanent magnet 302 are B at the average magnetic field magnetic flux density in generation magnetic field, movable part 303 present positions
0, and because first permanent magnet 301 and second permanent magnet 302 are retentive material, it is very little that its magnetic is influenced by external magnetic field.Further whether hypothesis switches on B regardless of magnetizing coil 304
0All remain unchanged.Therefore, under magnetizing coil 304 cold situations, but the electromagnetic force approximate calculation that movable part 303 is subjected to is:
F
0＝K
0·B
0 2，
K wherein
0Be constant, relevant with the cross-sectional area of the magnetic permeability of air and movable part 303 and first permanent magnet 303 or second permanent magnet, 302 opposite sides, this constant is known in those skilled in the art.
After magnetizing coil 304 energisings, the magnetic direction that the magnetic direction that it produces and first permanent magnet 301 or second permanent magnet 302 produce is opposite, if the electromagnetic force of two magnetic field generations is cancelled each other, at this moment movable part 303 is in critical condition, its suffered electromagnetic force is zero, therefore can obtain following formula:
F
0＝K
0·B
0 2＝K
1·(N·I
c)
2
K wherein
1Be constant, the cross-sectional area of the size of this constant and movable part 303 and first permanent magnet 303 or second permanent magnet, 302 opposite sides and the distance dependent of the movable part 303 and second permanent magnet 302, this constant is known in those skilled in the art; N is the number of turn of magnetizing coil 304, and Ic is a critical current.
In theory, as long as the exciting curent of magnetizing coil 304 just can make movable part 303 move greater than critical current.Exciting curent is big more, and movable part 303 is fast more from the speed that a position is transformed into another position, but the also corresponding increase of power consumption.Therefore in actual applications, exciting curent is set to a compromise numerical value usually.
In addition, the present invention also provides a kind of product that uses above-mentioned electromagnetic driver, and this product comprises contactor, relay, electromagnetically operated valve or electromagnetic lock.The benefit of being brought when being the above-mentioned electromagnetic driver of example explanation use with contactor or relay below.As shown in Figure 5, the contact 401 of this contactor or relay contacts along with the change of 303 positions of the movable part in the electromagnetic driver or disconnects, thereby realizes the break-make control between load 402 and the power supply.In traditional a large amount of now contactors or relay that use, because it is less movable part to be remained on the power of stable state, therefore when this contactor or relay are used in the bigger environment of acceleration, vibratility, be easy to cause movable part to break away from stable state, so the restriction that existing contactor or relay all exist acceleration, vibratility.And bistable electro magnetic relay of the present invention is owing to adopt two permanent magnet structures, movable part 303 can be fixed on a certain position highly stablely, therefore, contactor or the relay requirement in this respect of adopting bistable electro magnetic driven device of the present invention to make almost can be considered, can not be subjected to any restriction.Certainly, the present invention is not limited to above-mentioned contactor, relay, electromagnetically operated valve or electromagnetic lock, can also comprise other calutrons of using above-mentioned electromagnetic driver.
Below by the contactor of contrast use traditional electrical magnetic driven device, introduce the advantage of contactor aspect energy consumption of using bistable electro magnetic driven device of the present invention.
Use the contactor of traditional electromagnetic driver, in the adhesive operating state, its magnetizing coil needs continued power.Contactor with AC-3 duty 63A (ampere) is an example, and the power consumption of magnetizing coil is 40W, and promptly the contactor of a 63A (ampere) bulb that is equivalent to a 40W of needs is being accompanied its sticking work.If the contactor of a 63A (ampere) sticking work in one day 24 hours, its power consumption of one day is exactly 40W * 24 hour=960 watt-hours so.One day power consumption nearly once, and the consequence of this power consumption is to make magnetizing coil heating, also produces noise sometimes.In order to keep in touch the operate as normal of device, just must increase heat dissipation equipment, make it force cooling, and the power consumption again of these cooling devices produce noise simultaneously.Add the power consumption of heat dissipation equipment, one day the power consumption of contactor of a 63A is considerably beyond kilowatt-hour.And China is in the contactor of sticking operating state every year more than ten million platform all day long, and the power consumption in 1 year is exactly (with 10,000,000 calculating) so:
1 degree * 365 * 10,000,000=3,650,000,000 degree, i.e. 36.5 hundred million degree.
By 0.5 yuan of every degree electricity, its electricity charge are exactly 18.25 hundred million yuan, also do not calculate here because of power consumption institute caloric value to temperature rise " pollution " that environment caused.
And in the contactor of " the bistable electro magnetic driven device " that adopt the application to propose, only need apply a triggering signal to magnetizing coil, contactor just can stably be in adhesive or discharge operating state, when it is in adhesive or release condition, magnetizing coil just need not power supply, thereby can cut down the consumption of energy widely and generate heat.Being calculated as follows of the power consumption of this trigger when triggering:
Every triggering once, the power-on time of contactor is 50ms (millisecond), the startup power consumption of magnetizing coil is 6 times of average power consumption (is example with 40W), every triggering energy consumption once is:
40W * 6 * 50ms=12, the 000Wms=12Ws=0.003 watt-hour
Traditional common contactor, every sticking work 1 hour, its power consumption are 40 watt-hours.If every triggering was once worked 1 hour equally, the electric energy of the contactor of employing the application " bistable electro magnetic driven device " is:
(40W·h-0.003W·h)÷40W·h×100％＝99.9916％
As seen, the contactor of uniterrupted duty, electric energy is high more, because no matter how long the contactor sticking operating time also only needs once to trigger power supply.Certainly, in (short time duty) contactor of frequent starting, its energy-saving efficiency also correspondingly will reduce, as every triggering power supply once, contactor sticking work 1 minute, its electric energy is:
(2400W·s-12W·s)÷2400W·s×100％＝99.5％
Aforementioned calculation is the electric energy that triggers once, just can finish a work period twice and be actually to need to trigger, promptly this contactor is if be in release condition, trigger and once be in attracting state, trigger once again, just get back to release condition, this has just finished a work period, so its electric energy should be:
1. one hour electric energy of adhesive work:
(40W·h-0.003W·h×2)÷40W·h×100％＝99.983％
2. one minute electric energy of adhesive work:
(2400W·s-12W·s×2)÷2400W·s×100％＝99.00％
3. 30 seconds electric energy of adhesive work:
(1200W·s-12W·s×2)÷1200W·s×100％＝98.00％
If 1,000 ten thousand this " bistable state triggering contactors " are arranged in work, to calculate with minimum electric energy, the annual electricity charge that economize are exactly:
16.25 hundred million yuan of hundred million yuan * 98%=15.925
This is a how googol! This shows, adopt the contactor of bistable electro magnetic driven device of the present invention to save very much energy consumption, its popularizing application prospect is very significant.
Claims (10)
1. bistable electro magnetic driven device, this electromagnetic driver comprises:
First permanent magnet (301);
Second permanent magnet (302), this second permanent magnet (302) and described first permanent magnet (301) are oppositely arranged, and relative two have identical polarity;
Movable part (303), this movable part (303) is positioned between described first permanent magnet (301) and second permanent magnet (302), and it is peripheral around magnetizing coil (304) is arranged, by apply the electric current of different directions to this magnetizing coil (304), described movable part (303) can move between described first permanent magnet (301) and second permanent magnet (302).
2. bistable electro magnetic driven device according to claim 1, wherein, described electromagnetic driver also comprises magnetic shield (308), this magnetic shield (308) is positioned between described movable part (303) and the described magnetizing coil (304), is used to isolate the magnetic field of magnetizing coil (304) perpendicular to movable part (303) moving direction.
3. bistable electro magnetic driven device according to claim 2, wherein, described magnetic shield (308) is made by tin-phosphor bronze or aluminium.
4. bistable electro magnetic driven device according to claim 1, wherein, described electromagnetic driver also comprises shock-resistant (309), these shock-resistant (309) are positioned on described first permanent magnet (301) and/or second permanent magnet (302) and contacted of the described movable part (303), are used to avoid described movable part (303) directly to strike described first permanent magnet (301) and/or second permanent magnet (302).
5. bistable electro magnetic driven device according to claim 4, wherein, described shock-resistant (309) are made by electrical pure iron.
6. bistable electro magnetic driven device according to claim 1, wherein, described electromagnetic driver also comprises the magnetic cylinder, be used to hold described first permanent magnet (301), second permanent magnet (302) and movable part (303), and assemble the divergent magnetic field of described first permanent magnet (301) and second permanent magnet (302).
7. bistable electro magnetic driven device according to claim 1, wherein, described electromagnetic driver also comprises link rod (314), this link rod (314) is fixedlyed connected with described movable part (303), is used for the driven object that power that movable part (303) is produced under the excitation of magnetizing coil (304) and displacement pass to electromagnetic driver.
8. according to the described bistable electro magnetic driven device of each claim among the claim 1-7, wherein, described electromagnetic driver also comprises:
Start and stop button (316) is used to control the electric current loading of this magnetizing coil (304);
Built-in reversing switch (317) is connected between described start and stop button (316) and the described magnetizing coil (304), is used for changing the flow direction of the electric current in the magnetizing coil (304) when the each loading current of magnetizing coil (304).
9. according to the described bistable electro magnetic driven device of each claim among the claim 1-7, wherein, described electromagnetic driver also comprises external reversing switch (318), be electrically connected with described magnetizing coil (304), be used to control the electric current loading of this magnetizing coil (304) and the flow direction of the electric current that is loaded.
10. product that uses the described bistable electro magnetic driven device of each claim among the claim 1-9, this product is contactor, relay, electromagnetically operated valve or electromagnetic lock.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10729208P | 2008-10-21 | 2008-10-21 | |
| US61/107,292 | 2008-10-21 |
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| WO2015024469A1 (en) * | 2013-08-20 | 2015-02-26 | Liang Chih-Chuan | Bistable relay and bistable actuator |
| CN105895299A (en) * | 2016-05-19 | 2016-08-24 | 哈尔滨工程大学 | Amorphous alloy composite iron core high-speed electromagnet |
| CN110940765A (en) * | 2018-09-24 | 2020-03-31 | 西门子股份公司 | Fluid pressure control device and system and gas chromatograph |
| CN110958964A (en) * | 2017-07-26 | 2020-04-03 | 罗伯特·博世有限公司 | Bistable solenoid valve for a hydraulic brake system, method for controlling and assembling said solenoid valve, and brake system having such a solenoid valve |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140094544A (en) * | 2011-10-17 | 2014-07-30 | 더 기타머 컴파니 | Vibration transducer and actuator |
| CN103999171A (en) * | 2011-10-17 | 2014-08-20 | 吉特马尔公司 | Vibration transducer and actuator |
| KR102003829B1 (en) * | 2011-10-17 | 2019-07-25 | 더 기타머 컴파니 | Vibration transducer and actuator |
| CN102879678A (en) * | 2012-09-24 | 2013-01-16 | 北京二七轨道交通装备有限责任公司 | Tester for electromagnetic valve |
| CN102879678B (en) * | 2012-09-24 | 2015-06-03 | 北京二七轨道交通装备有限责任公司 | Tester for electromagnetic valve |
| WO2015024469A1 (en) * | 2013-08-20 | 2015-02-26 | Liang Chih-Chuan | Bistable relay and bistable actuator |
| US9934924B2 (en) | 2013-08-20 | 2018-04-03 | Chih-Chuan Liang | Bistable relay and bistable actuator |
| CN105895299A (en) * | 2016-05-19 | 2016-08-24 | 哈尔滨工程大学 | Amorphous alloy composite iron core high-speed electromagnet |
| CN105895299B (en) * | 2016-05-19 | 2018-04-17 | 哈尔滨工程大学 | Non-crystaline amorphous metal composite iron core high-speed electro-magnet |
| CN110958964A (en) * | 2017-07-26 | 2020-04-03 | 罗伯特·博世有限公司 | Bistable solenoid valve for a hydraulic brake system, method for controlling and assembling said solenoid valve, and brake system having such a solenoid valve |
| CN110940765A (en) * | 2018-09-24 | 2020-03-31 | 西门子股份公司 | Fluid pressure control device and system and gas chromatograph |
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Application publication date: 20100609 |