CN104505214B - A kind of high thrust low-temperature-rise no-noise AC electric magnet - Google Patents
A kind of high thrust low-temperature-rise no-noise AC electric magnet Download PDFInfo
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- CN104505214B CN104505214B CN201410790859.7A CN201410790859A CN104505214B CN 104505214 B CN104505214 B CN 104505214B CN 201410790859 A CN201410790859 A CN 201410790859A CN 104505214 B CN104505214 B CN 104505214B
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- 230000005669 field effect Effects 0.000 claims abstract description 49
- 239000004065 semiconductor Substances 0.000 claims abstract description 46
- 230000005611 electricity Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 7
- 230000001629 suppression Effects 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 229910052742 iron Inorganic materials 0.000 description 5
- 210000001367 artery Anatomy 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 210000003462 vein Anatomy 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The invention discloses a kind of high thrust low-temperature-rise no-noise AC electric magnet, belong to electric control valve Element Technology field.This electric magnet includes ac power input end and electromagnet coil, control module it is provided with between ac power input end and coil, control module includes the latter linked rectification circuit of alternating current power supply, after rectification, positive source is connected directly to the input pole of coil, connect between output stage and the negative pole of power supply of coil and have metal-oxide-semiconductor field effect transistor, the grid of metal-oxide-semiconductor field effect transistor is connected to the pulse voltage that height converts.Use the alternating electromagnet life-span length of invention, reliable in action, low in energy consumption.
Description
Technical field
The present invention relates to a kind of alternating electromagnet, particularly to a kind of high thrust low-temperature-rise no-noise AC electric magnet, belong to
In electric control valve Element Technology field.
Background technology
Alternating electromagnet is a kind of switch element driven with conventional AC power, mostly applies in industry control occasion, commonly
In use, pass through in coil is alternating current to alternating electromagnet, often due to spool jam or electric magnet thrust are not enough, causes
Armature does not reaches adhesive closing point, electric current at this moment can be caused excessive, cause and burn out coil, it addition, copper loss and iron loss during Guan Bi
Existing, cause power consumption higher, temperature rise, the pulsating force of exchange forms noise after easily causing Guan Bi, and common alternating electromagnet is just
When opening acting, owing to air gap is big, thrust is little, and after acting, air gap is little and thrust greatly but is not done work, and uses with when maintaining owing to opening
Same power supply, therefore when armature Guan Bi maintains, although not doing work, still needs to electric current to maintain thrust, and power consumption is higher.Present
Industry control occasion needs the alternating electromagnet that a kind of high thrust noiselessness low-temperature-rise life-span long reliability is high.
Summary of the invention
The purpose of the present invention is easily burnt coil, temperature rise for overcoming alternating electromagnet in prior art, is easily generated noise etc.
Defect, it is provided that a kind of high thrust low-temperature-rise no-noise AC electric magnet.
For realizing the purpose of the present invention, the technical solution adopted in the present invention is: a kind of high thrust low-temperature-rise noiselessness is handed over
Stream electric magnet, including ac power input end and electromagnet coil, is provided with control mould between ac power input end and coil
Block, described control module includes the latter linked rectification circuit of alternating current power supply, and after rectification, positive source is connected directly to coil
Input pole, connects between output stage and the negative pole of power supply of coil and has metal-oxide-semiconductor field effect transistor, the emitter-base bandgap grading of audion Q1 to be connected to power supply
Positive pole on, audion Q1 collector connect on the grid of metal-oxide-semiconductor field effect transistor, in the base stage of audion Q1 connect multi-harmonic-oscillations electricity
The output on road, described multi-resonant oscillating circuit connects and has delay circuit, and when power on electric magnet is opened, triode Q1 turns on
The trigger voltage of rear offer metal-oxide-semiconductor field effect transistor, metal-oxide-semiconductor field effect transistor turns on, and be added in coil two ends is the voltage between both positive and negative polarity,
Producing big electric current in coil to produce high thrust, multi-resonant oscillating circuit sends certain frequency and duty after delay circuit time delay
The pulse of ratio is to the base stage of audion Q1, and during pulse high potential, audion Q1 is in cut-off state, and metal-oxide-semiconductor field effect transistor loses tactile
Generating pressure, when pulse electronegative potential, triode Q1 turns on, and metal-oxide-semiconductor field effect transistor obtains trigger voltage, and metal-oxide-semiconductor field effect transistor is at multi resonant
Under the effect of oscillating circuit, grid constantly obtains and loses trigger voltage, and making the voltage being added in coil two ends is certain dutycycle
Pulse, make coil armature maintain state time electric current relatively electric magnet connect time reduce, further, described audion Q1 collection
Pole is connected to the forward end of diode D11 through resistance R12, and the backward end of diode is connected on the grid of metal-oxide-semiconductor field effect transistor,
Connecting on the grid of described metal-oxide-semiconductor field effect transistor and have the emitter-base bandgap grading of audion Q2, the base stage of triode Q2 is connected to diode D11's
Forward end, base stage is connected to power cathode through resistance R13, and the collector of triode Q2 is connected to the negative pole of power supply, power on
Electric magnet needs high thrust when opening, provide the trigger voltage of metal-oxide-semiconductor field effect transistor after triode Q1 conducting, and metal-oxide-semiconductor field effect transistor is led
Logical, be added in coil two ends is the voltage between both positive and negative polarity, produces big electric current to produce high thrust, multi-resonant oscillating circuit in coil
The pulse base stage to audion Q1 of certain frequency and dutycycle, during pulse high potential, three is sent after delay circuit time delay
Pole pipe Q1 is in cut-off state, and audion Q2 turns on, and when pulse electronegative potential, triode Q1 turns on, and audion Q2 ends, MOS
The grid of field effect transistor constantly obtains and loses trigger voltage, makes to be added in the arteries and veins that voltage is certain dutycycle at coil two ends
Punching, makes coil reduce during electric current relatively power on when armature maintains state, and further, described multi-resonant oscillating circuit includes
IC7555 module, for IC7555 module for power supply after resistance R01 that the DC source after rectification is concatenated, resistance R02 dividing potential drop,
1 foot of IC7555 module is connected to the cold end of resistance R01, and 8 feet are connected to the hot end of resistance R01, and IC7555 is by 8,7
Foot electricity and resistance R04,2/6 foot and 7 feet and resistance R03,2/6 foot and 1 foot and electric capacity C02 formation certain frequency and the arteries and veins of dutycycle
Punching, wherein 8 feet are connected in the positive pole of power supply, and first end of resistance R04 is connected in the positive pole of power supply, and the second end is connected in 7 feet, resistance R03
The first end be connected in 7 feet, the second end is connected on electric capacity C02 the first end, and 6 feet and 2 feet are connected to resistance R03 the second end, electric capacity C02
The second end be connected to the cold end of resistance R01, further, described multi-resonant oscillating circuit includes IC7555 module, whole
For IC7555 module for power supply after resistance R01 that DC source after stream is concatenated, resistance R02 dividing potential drop, 1 foot of IC7555 module is even
Being connected on the cold end of resistance R01,8 feet are connected to the hot end of resistance R01, and what described multi-resonant oscillating circuit connected prolongs
Time circuit be: first end of resistance R05 is connected on positive source, and the second end connects first end of electric capacity C03, the of electric capacity C03
One end is connected on set/reset foot 4 foot of multi-resonant oscillating circuit, and second end of electric capacity C03 is connected to 1 foot of IC7555 module
On, it being arranged in parallel resistance R06 with electric capacity C03, during energising, power supply is charged to electric capacity C03 by resistance R05, as electric capacity C03 two
When the voltage of end is higher than the set voltage of 4 feet, triggers multi-resonant oscillating circuit and send the pulse of certain frequency and dutycycle, work as circuit
During power-off, electric capacity C03 is discharged by resistance R06 connected in parallel, further, at metal-oxide-semiconductor field effect transistor two ends and connect mutually string
Resistance R14, the electric capacity C11 of connection forms absorbing circuit, further, is terminated with two-way suppression diode D20 in exchange input two,
Prevent electrostatic and high-voltage pulse surge, further, between 4 feet and 1 foot of described IC7555 module, be provided with diode D06
For ensureing the IC7555 module 4 normally-open voltage of pin preset, 8 feet and 1 foot indirect zener diode D05, for IC7555 work
Make power supply voltage stabilizing, further, be set up in parallel Zener diode D22, commutation diode D21 in opposite direction for continuing with coil
Stream and adjustable attenuation, the forward end of two diodes is connected to coil two ends.
The positive Advantageous Effects of the present invention is: the present invention uses alternating current as input power, can meet common
The application requirements that alternating electromagnet uses, the present invention be added on coil when electric magnet is opened for full-wave direct current voltage, permissible
Ensure the requirement of high thrust when electric magnet is opened, after unlatching completes, control MOS field by the multi-resonant oscillating circuit of Time-delayed trigger
The continuous height of grid voltage of effect pipe, metal-oxide-semiconductor is operated on off operating mode, at the two ends of coil plus the arteries and veins of certain dutycycle
Rushing voltage, the DC current made when electric magnet maintains state in coil is the least, meets electric magnet and maintains the needs of state, significantly
Reduce iron loss in former common alternating electromagnet, lower power consumption, reach the effect of low-temperature-rise.This coil uses and is passed through unidirectional current,
Noiselessness.The present invention realizes can to realize by increasing corresponding circuit control module, uses the alternating electromagnetic of the present invention
Ferrum life-span length, reliable in action, low in energy consumption.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram of the present invention.
Fig. 2 is the schematic diagram of the electric magnet of the present invention.
Fig. 3 be the present invention open, voltage x current schematic diagram when maintaining.
Detailed description of the invention
In order to explain the enforcement of the present invention more fully, it is provided that the embodiment of the present invention.These embodiments are only
Elaboration to this device, does not limits the scope of the invention.
A kind of high thrust low-temperature-rise no-noise AC electric magnet, including ac power input end and electromagnet coil, exchange
Being provided with control module between power input and coil, described control module includes the latter linked rectified current of alternating current power supply
Road, after rectification, positive source is connected directly to the input pole of coil, and connecting between output stage and the negative pole of power supply of coil has MOS
Field effect transistor, the emitter-base bandgap grading of audion Q1 is connected on the positive pole of power supply, and the connection of audion Q1 collector is at the grid of metal-oxide-semiconductor field effect transistor
On, the base stage of audion Q1 connects the output of multi-resonant oscillating circuit, described multi-resonant oscillating circuit connects delay circuit,
When power on electric magnet is opened, providing the trigger voltage of metal-oxide-semiconductor field effect transistor after triode Q1 conducting, metal-oxide-semiconductor field effect transistor turns on,
Be added in coil two ends is the voltage between both positive and negative polarity, produces big electric current to produce high thrust, multi-resonant oscillating circuit warp in coil
The pulse base stage to audion Q1 of certain frequency and dutycycle, during pulse high potential, three poles is sent after crossing delay circuit time delay
Pipe Q1 is in cut-off state, and metal-oxide-semiconductor field effect transistor loses trigger voltage, and when pulse electronegative potential, triode Q1 turns on, and MOS field is imitated
Should be in control trigger voltage, metal-oxide-semiconductor field effect transistor grid under the effect of multi-resonant oscillating circuit constantly obtains and loses triggering electricity
Pressure, makes to be added in the pulse that voltage is certain dutycycle at coil two ends, makes coil electric current relatively electric magnet when armature maintains state
Reducing during connection, further, described audion Q1 collector is connected to the forward end of diode D11, two poles through resistance R12
The backward end of pipe is connected on the grid of metal-oxide-semiconductor field effect transistor, and the grid of described metal-oxide-semiconductor field effect transistor connects audion Q2's
Emitter-base bandgap grading, the base stage of triode Q2 is connected to the forward end of diode D11, and base stage is connected to power cathode through resistance R13, three grades
The collector of pipe Q2 is connected to the negative pole of power supply, and power on electric magnet needs high thrust when opening, provide after triode Q1 conducting
The trigger voltage of metal-oxide-semiconductor field effect transistor, metal-oxide-semiconductor field effect transistor turns on, and be added in coil two ends is the voltage between both positive and negative polarity, in coil
Producing big electric current to produce high thrust, multi-resonant oscillating circuit sends the arteries and veins of certain frequency and dutycycle after delay circuit time delay
Rushing the base stage to audion Q1, during pulse high potential, audion Q1 is in cut-off state, and audion Q2 turns on, at the low electricity of pulse
During position, triode Q1 turns on, and audion Q2 ends, and the grid of metal-oxide-semiconductor field effect transistor constantly obtains and loses trigger voltage, makes to add
Voltage at coil two ends is the pulse of certain dutycycle, makes coil drop during electric current relatively power on when armature maintains state
Low, further, described multi-resonant oscillating circuit includes IC7555 module, resistance R01 that the DC source after rectification is concatenated,
Being IC7555 module for power supply after resistance R02 dividing potential drop, 1 foot of IC7555 module is connected to the cold end of resistance R01, and 8 feet connect
At the hot end of resistance R01, IC7555 by 8,7 feet electricity and resistance R04,2/6 foot and 7 feet and resistance R03,2/6 foot and 1 foot and
Electric capacity C02 forms certain frequency and the pulse of dutycycle, and wherein 8 feet are connected in the positive pole of power supply, and first end of resistance R04 is connected in electricity
The positive pole in source, the second end is connected in 7 feet, and first end of resistance R03 is connected in 7 feet, and the second end is connected on electric capacity C02 the first end, 6 feet and
2 feet are connected to resistance R03 the second end, and second end of electric capacity C02 is connected to the cold end of resistance R01, further, described
Multi-resonant oscillating circuit includes IC7555 module, after resistance R01 that the DC source after rectification is concatenated, resistance R02 dividing potential drop is
IC7555 module for power supply, 1 foot of IC7555 module is connected to the cold end of resistance R01, and 8 feet are connected to the high electricity of resistance R01
Position end, the delay circuit that described multi-resonant oscillating circuit connects is: first end of resistance R05 is connected on positive source, second
End connects first end of electric capacity C03, and first end of electric capacity C03 is connected on set/reset foot 4 foot of multi-resonant oscillating circuit, electric capacity
Second end of C03 is connected on 1 foot of IC7555 module, has been arranged in parallel resistance R06 with electric capacity C03, and during energising, power supply passes through
Resistance R05 charges to electric capacity C03, when the voltage at electric capacity C03 two ends is higher than the set voltage of 4 feet, triggers multi-resonant oscillating circuit
Sending the pulse of certain frequency and dutycycle, when down circuitry, electric capacity C03 is discharged by resistance R06 connected in parallel, enters one
Step, at metal-oxide-semiconductor field effect transistor two ends and meet resistance R14, the electric capacity C11 being serially connected and forms absorbing circuit, further, in friendship
Stream input two is terminated with two-way suppression diode D20, prevents electrostatic and high-voltage pulse surge, further, described IC7555
Diode D06 it is provided with for ensureing the IC7555 module 4 normally-open voltage of pin preset, 8 feet and 1 between 4 feet and 1 foot of module
Foot indirect zener diode D05, for IC7555 working power voltage stabilizing, further, is set up in parallel in opposite direction with coil
Zener diode D22, commutation diode D21 are used for afterflow and adjustable attenuation, and the forward end of two diodes is connected to line
Circle two ends.In the present invention, metal-oxide-semiconductor field effect transistor uses N-channel enhancement mode.
In conjunction with accompanying drawing, the present invention is described further, is respectively labeled as in accompanying drawing: 101: control module；102: armature；
103: coil；104: iron core；105: push rod；Each component symbol and code name in electrical schematic diagram are shown in Fig. 1, in Fig. 1 in addition to coil
All elements constitute control module of the present invention according to shown connection, have foot 1 to foot 8 in control module is
IC7555 module.
Electromagnet structure such as accompanying drawing 2 shows.Electric magnet is that hydraulic valve controls element, coil obtain electric generation electric current, encourage magnetic
Field (electric energy conversion magnetic energy), moving component armature 102 moves under pole magnetization iron core 104 magneticaction, at rated travel
Spool opposite spring resistance to be overcome and other additional force drive spool action, action to armature closing point, and hydraulic valve spool moves
Complete.Now spool still needs to electromagnetic force and maintains.Therefore, when hydraulic valve is opened, electric magnet travel point needs possess certain
Electromagnetic force do work.During maintenance, need certain maintenance magnetic force.What common alternating electromagnet passed through in coil is to hand over
Stream electricity, although can reach the requirement described in thrust, but electric magnet closing point power is big, formation to be difficult to Rapid reset, power consumption big
(iron loss and copper loss) cann't be solved, and this is the existence due to field structure and air gap, necessarily the power of travel point little and
Closing point power is big, is therefore faulty in power consumption produced by the closing point do not done work.By the method for control circuit, make electromagnetism
Coil obtains big electric current and produces high thrust acting when electrically activating, and maintains with small area analysis after Guan Bi, meanwhile, and this electromagnet power supply
For alternating current, and it is unidirectional current in solenoid, substantially eliminates the iron loss that alternating electromagnet brings.Therefore promote by the method and open
Dynamicthrust, it is desirable for reducing power consumption with temperature rise.
The control module of the present invention is as it is shown in figure 1, be also described in detail its attachment structure above, the most right
Again circuit is further detailed:
(1) rectification circuit
Alternating current 220V is used the rectification of bridge-type D01-D04, after rectification, is added in solenoid two ends by metal-oxide-semiconductor field effect transistor.
Meanwhile, filter to multi-resonant oscillating circuit offer power supply through resistance R01, resistance R02 dividing potential drop, electric capacity C01；
(2) multi-resonant oscillating circuit
Form multi-resonant oscillating circuit with IC7555 and resistance R3, resistance R4, electric capacity C02,3 feet produce certain frequency and account for
The pulse of empty ratio, have chosen IC7555 module chip in the present invention, can realize the present invention program is not limited to IC7555 module
Chip, the chip of choosing multiple 555 type realizes this programme, need only select to mate to other corresponding element model；
(3) delay circuit
Circuit obtain electric after, power supply charges to electric capacity C03 through resistance R5, and the voltage Uc at electric capacity two ends rises, and the time is by resistance
R5, resistance R6, electric capacity C03 determine, when Uc rises to slightly above IC7555 chip 4 foot set voltage, oscillating impulse starts.Time delay
Terminate, after circuit power down, Uc to resistance R6 discharge, with treat next time electric.Stabilivolt D6, resistance R5, resistance R6, electric capacity C03
4 foot voltages when normal work is provided；
(4) gate trigger voltage provides circuit
It is made up of Q1, Q2 and peripheral original paper, it is provided that fet gate trigger voltage, in Fig. 1, positive source and audion
Resistance R11 is set between the base stage of Q1 and is to ensure that in circuit works the base potential of audion Q1 is at the model that suitably works
In enclosing, in the present invention, in the case of each device is perfect, Q2, D11, R13, D12 can not want, and arrange Q2 and above device
The purpose of part is to ensure that in the case of Q1 ends, if current potential is not fallen on the grid of metal-oxide-semiconductor field effect transistor
Coming, at this moment Q2 conducting can ensure that the electronegative potential on grid, to ensure that circuit stability works；
(5) metal-oxide-semiconductor field effect transistor main circuit
Solenoid electric-opening time, metal-oxide-semiconductor field effect transistor overwhelming majority time service opening state, delay circuit time delay
After end, under the control of the pulse that metal-oxide-semiconductor field effect transistor grid receives, it is operated on off operating mode；
(6) protection circuit
By rectification circuit front end and connect Transient Suppression Diode, antistatic and high-voltage pulse surge, when having more than 400V's
During instantaneous pressure, protect electric magnet inner member；Stabilivolt provides and limits voltage.R14, C11 composition metal-oxide-semiconductor field effect transistor absorbs electricity
Road；
(7) freewheeling circuit
Being made up of diode D21, diode D22, Zener diode D22 adapts to electric magnet, to obtain the journey that necessarily decays
The decay current of degree.Eliminate counter electromotive force to circuit impact and the impact of power-off armature resetting time.
When obtaining electric-opening, the Rectified alternating current that the rectified bridge of 220V alternating current produces is pressed under metal-oxide-semiconductor field effect transistor conducting
It is added to solenoid two ends.Form big current start, meanwhile, by divider resistance R1, resistance R2 and electric capacity C01, diode D5
Power for multi-resonant oscillating circuit, make IC7555 the most normally work, it is considered to the fluctuation of electrical network 220V, take R1=560K ohm, R2=
42K ohm, voltage U1, the 8=4-16V between 1 foot of C01=100N, the IC7555 made and 8 feet, at this moment positive source is by resistance R5
To electric capacity C03 charging time delay, the time is determined by circuitous resistance R5, resistance R6, electric capacity C03, the voltage Uc liter at electric capacity C03 two ends
During to slightly above IC7555 chip 4 foot set voltage, oscillating impulse starts.During time delay, owing to 4 feet are electronegative potential, Q1
Conducting, Q2 ends, and metal-oxide-semiconductor field effect transistor grid high potential turns on, and solenoid obtains big electric current.Electric magnet is generally movement time
25 35ms, therefore this delay circuit Preset Time is 50-90ms, and power taking resistance R5=2-3.3M ohm, C03=100 nF, for making
Next time electric be normally carried out, during electric magnet power down, electric capacity C03 answers repid discharge, power taking resistance R6=R5, the U of Zener diode D06
=3V.IC7555 and resistance R3, resistance R4, electric capacity C02 form multi-resonant oscillating circuit, after time delay terminates, 3 feet produce certain
The pulse of frequency and dutycycle is to control the potential pulse at the two ends of solenoid, according to D.C. resistance and the inductance of solenoid
And the electric current that maintains of solenoid determines frequency and the dutycycle of pulse, so that it is determined that resistance R3, resistance R4, electric capacity C02
Size, as a example by the J12-27YC-DL AC220V electric magnet of the present invention, coil resistance 133 Europe, empirical tests takes R3=1M ohm,
R4=200K ohm, C02=1N, solenoid can get pulse frequency f=1.43 ÷ [(R3+R4) * C] and is about 1KHZ, dutycycle i=
The pulse voltage of R3 ÷ (R3+R4)=14.3%.The DC voltage 23V at solenoid two ends, maintains electric current 0.17A, defeated in exchange
Enter AC220V side test, power P=5.8W, electric current I=0.05A.Testing common J12-27YC AC220V electric magnet, this is common
Pass through in electromagnet coil is alternating current, electric current I=0.25A, power P=31.6W.From the above, it can be seen that use the present invention
Can not only obtain big current start, small area analysis maintains, and when electric magnet maintains, replaces exchange to be greatly reduced with direct current in coil
Iron loss in power consumption.By above power contrast, power consumption is fairly obvious with temperature rise effect of optimization.
After describing embodiments of the present invention in detail, one of ordinary skilled in the art is clearly understood that, is not taking off
Can carry out various change and amendment under above-mentioned claim with spirit, all technical spirit according to the present invention are to above real
Execute any simple modification, equivalent variations and modification that example is made, belong to the scope of technical solution of the present invention, and the present invention is the most not
It is limited to the embodiment of example in description.
Claims (7)
1. a high thrust low-temperature-rise no-noise AC electric magnet, including ac power input end and electromagnet coil, alternating current
It is provided with control module between source input and coil, it is characterised in that: described control module connects after including alternating current power supply
Rectification circuit, after rectification, positive source is connected directly to the input pole of coil, between output stage and the negative pole of power supply of coil
Connecting has metal-oxide-semiconductor field effect transistor, the emitter stage of audion Q1 to be connected on the positive pole of power supply, and audion Q1 colelctor electrode connects at MOS
On the grid of field effect transistor, the base stage of audion Q1 connects the output of multi-resonant oscillating circuit, on described multi-resonant oscillating circuit
Connect and have delay circuit, when power on electric magnet is opened, after triode Q1 conducting, provide the trigger voltage of metal-oxide-semiconductor field effect transistor,
Metal-oxide-semiconductor field effect transistor turns on, and be added in coil two ends is the voltage between both positive and negative polarity, produces big electric current and push away greatly to produce in coil
Power, multi-resonant oscillating circuit sends the pulse base stage to audion Q1 of certain frequency and dutycycle after delay circuit time delay,
During pulse high potential, audion Q1 is in cut-off state, and metal-oxide-semiconductor field effect transistor loses trigger voltage, when pulse electronegative potential, and three grades
Pipe Q1 turns on, and metal-oxide-semiconductor field effect transistor obtains trigger voltage, and metal-oxide-semiconductor field effect transistor grid under the effect of multi-resonant oscillating circuit is continuous
Obtain and lose trigger voltage, making to be added in the pulse that voltage is certain dutycycle at coil two ends, make coil maintain shape at armature
During state, electric current relatively electric magnet reduces when connecting, and described audion Q1 colelctor electrode is just being connected to diode D11 through resistance R12
Xiang Duan, the backward end of diode is connected on the grid of metal-oxide-semiconductor field effect transistor, and the grid of described metal-oxide-semiconductor field effect transistor connects to be had
The emitter stage of audion Q2, the base stage of triode Q2 is connected to the forward end of diode D11, and base stage is connected to through resistance R13
Power cathode, the colelctor electrode of triode Q2 is connected to the negative pole of power supply, and power on electric magnet needs high thrust when opening, three grades
Thering is provided the trigger voltage of metal-oxide-semiconductor field effect transistor after pipe Q1 conducting, metal-oxide-semiconductor field effect transistor turns on, be added in coil two ends be both positive and negative polarity it
Between voltage, coil produces big electric current to produce high thrust, multi-resonant oscillating circuit sends necessarily after delay circuit time delay
The pulse of frequency and dutycycle is to the base stage of audion Q1, and during pulse high potential, audion Q1 is in cut-off state, audion Q2
Conducting, when pulse electronegative potential, triode Q1 turns on, and audion Q2 ends, and the grid of metal-oxide-semiconductor field effect transistor constantly obtains and loses
Go trigger voltage, make to be added in the pulse that voltage is certain dutycycle at coil two ends, make coil electric current when armature maintains state
Relatively reduce during power on.
A kind of high thrust low-temperature-rise no-noise AC electric magnet the most according to claim 1, it is characterised in that: described many
Resonance oscillation circuit includes IC7555 module, after resistance R01 that the DC source after rectification is concatenated, resistance R02 dividing potential drop is
IC7555 module for power supply, 1 foot of IC7555 module is connected to the cold end of resistance R01, and 8 feet are connected to the high electricity of resistance R01
Position end, IC7555 is formed necessarily by 8,7 foot electricity and resistance R04,2/6 foot and 7 feet and resistance R03,2/6 foot and 1 foot and electric capacity C02
Frequency and the pulse of dutycycle, wherein 8 feet are connected in the positive pole of power supply, and first end of resistance R04 is connected in the positive pole of power supply, the second end
Being connected in 7 feet, first end of resistance R03 is connected in 7 feet, and the second end is connected on electric capacity C02 the first end, and 6 feet and 2 feet are connected to resistance
R03 the second end, second end of electric capacity C02 is connected to the cold end of resistance R01.
A kind of high thrust low-temperature-rise no-noise AC electric magnet the most according to claim 1, it is characterised in that: described many
Resonance oscillation circuit includes IC7555 module, after resistance R01 that the DC source after rectification is concatenated, resistance R02 dividing potential drop is
IC7555 module for power supply, 1 foot of IC7555 module is connected to the cold end of resistance R01, and 8 feet are connected to the high electricity of resistance R01
Position end, the delay circuit that described multi-resonant oscillating circuit connects is: first end of resistance R05 is connected on positive source, second
End connects first end of electric capacity C03, and first end of electric capacity C03 is connected on set/reset foot 4 foot of multi-resonant oscillating circuit, electric capacity
Second end of C03 is connected on 1 foot of IC7555 module, has been arranged in parallel resistance R06 with electric capacity C03, and during energising, power supply passes through
Resistance R05 charges to electric capacity C03, when the voltage at electric capacity C03 two ends is higher than the set voltage of 4 feet, triggers multi-resonant oscillating circuit
Sending the pulse of certain frequency and dutycycle, when down circuitry, electric capacity C03 is discharged by resistance R06 connected in parallel.
A kind of high thrust low-temperature-rise no-noise AC electric magnet the most according to claim 1, it is characterised in that: in MOS field
Effect pipe two ends also meet resistance R14, the electric capacity C11 being serially connected and form absorbing circuit.
A kind of high thrust low-temperature-rise no-noise AC electric magnet the most according to claim 1, it is characterised in that: defeated in exchange
Enter two and be terminated with two-way suppression diode D20, prevent electrostatic and high-voltage pulse surge.
A kind of high thrust low-temperature-rise no-noise AC electric magnet the most according to claim 3, it is characterised in that: described
Diode D06 it is provided with for ensureing the IC7555 module 4 normally-open voltage of pin preset between 4 feet and 1 foot of IC7555 module,
8 feet and 1 foot indirect zener diode D05, for IC7555 working power voltage stabilizing.
A kind of high thrust low-temperature-rise no-noise AC electric magnet the most according to claim 1, it is characterised in that: with coil also
Zener diode D22, the commutation diode D21 that row setting direction is contrary is used for afterflow and adjustable attenuation, and two diodes are just
It is connected to coil two ends to end.
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| CN104505214B true CN104505214B (en) | 2016-08-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3412946A1 (en) * | 2017-06-09 | 2018-12-12 | Andreas Stihl AG & Co. KG | Method for actuating an electromagnetic valve and electromagnetic valve |
| CN111627643B (en) * | 2020-05-13 | 2021-10-15 | 四川科华天府科技有限公司 | Fixing system is inhaled to magnetism |
| CN114360847B (en) * | 2022-01-11 | 2023-08-04 | 安阳凯地磁力科技股份有限公司 | Electromagnet capable of accurately controlling low temperature rise and high thrust |
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| EP0424280B1 (en) * | 1989-10-17 | 1994-08-03 | Merlin Gerin | Electronic control circuit for a direct current energised pulse motor |
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| CN204270773U (en) * | 2014-12-19 | 2015-04-15 | 安阳凯地电磁技术有限公司 | A kind of high thrust low-temperature-rise no-noise AC electromagnet |
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| CH664232A5 (en) * | 1984-05-23 | 1988-02-15 | Sodeco Compteurs De Geneve | METHOD AND CIRCUIT FOR CONTROLLING AN ELECTROMAGNET. |
| CN103647250B (en) * | 2013-12-05 | 2016-04-06 | 江苏国星电器有限公司 | Electromagnetic undervoltage release and control method thereof |
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| EP0424280B1 (en) * | 1989-10-17 | 1994-08-03 | Merlin Gerin | Electronic control circuit for a direct current energised pulse motor |
| CN2103190U (en) * | 1991-11-06 | 1992-04-29 | 中山市威力洗衣机厂 | Electromagnet current-limiting protector |
| CN201315213Y (en) * | 2008-11-23 | 2009-09-23 | 中国电子科技集团公司第四十研究所 | Magnet exciting coil control device used in DC electromagnet |
| JP5099059B2 (en) * | 2009-03-25 | 2012-12-12 | 株式会社デンソー | Inductive load drive |
| CN204270773U (en) * | 2014-12-19 | 2015-04-15 | 安阳凯地电磁技术有限公司 | A kind of high thrust low-temperature-rise no-noise AC electromagnet |
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| CN104505214A (en) | 2015-04-08 |
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Inventor after: Meng Fanpeng Inventor after: Meng Yuan Inventor after: Li Shiyu Inventor before: Meng Fanpeng |
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Effective date of registration: 20211116 Address after: 455000 No. 2, north of west section of Changjiang Avenue, high tech Zone, Anyang City, Henan Province Patentee after: Anyang Kaidi Magnetic Technology Co.,Ltd. Address before: 455000 No. 303 Changjiang Avenue, high tech Zone, Anyang City, Henan Province Patentee before: ANYANG KAIDI ELECTROMAGNETIC TECHNOLOGY Co.,Ltd. |
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Denomination of invention: A noiseless AC electromagnet with high thrust and low temperature rise Effective date of registration: 20221223 Granted publication date: 20160824 Pledgee: Bank of China Limited Anyang Branch Pledgor: Anyang Kaidi Magnetic Technology Co.,Ltd. Registration number: Y2022980028362 |
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Granted publication date: 20160824 Pledgee: Bank of China Limited Anyang Branch Pledgor: Anyang Kaidi Magnetic Technology Co.,Ltd. Registration number: Y2022980028362 |