CN102620032A - Electronic noiseless electromagnetic valve - Google Patents
Electronic noiseless electromagnetic valve Download PDFInfo
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- CN102620032A CN102620032A CN2012101085385A CN201210108538A CN102620032A CN 102620032 A CN102620032 A CN 102620032A CN 2012101085385 A CN2012101085385 A CN 2012101085385A CN 201210108538 A CN201210108538 A CN 201210108538A CN 102620032 A CN102620032 A CN 102620032A
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Abstract
An electronic noiseless electromagnetic valve comprises a circuit unit and an alternating current electromagnetic. The circuit unit is a four-port network which is provided with two input ports N1 and N2 and two output ports P1 and P2. The input ports N1 and N2 are connected with an S1 end and an S2 end of alternating-current voltage of a municipal alternating-current network respectively, and the output ports P1 and P2 are connected with an A1 end and an A2 end of an excitation coil L respectively. The circuit unit is further provided with a voltage-reducing and auxiliary tank circuit, an auxiliary rectification circuit, an energy unidirectional circuit and a tank circuit, wherein the voltage-reducing and auxiliary tank circuit is formed by a first capacitor C1, the auxiliary rectification circuit is formed by a first diode D1, the energy unidirectional circuit is formed by a second diode D2, and the tank circuit is formed by an energy-storing capacitor C2.
Description
Technical field
The present invention relates to the solenoid valve field, relate in particular to the improved electronic type noiseless of a kind of application electric technology solenoid valve.
Background technique
Solenoid valve (solenoid valve) is a kind of application low-voltage electrical apparatus very widely, and hydraulic equipment, pneumatic machinery, Motor Vehicle, IC-card water meter, IC-card gas meter, oilling machine, water vendor, refrigerator, drinking machine etc. all are used as performer with it.Its working principle is to utilize electromagnet to drive spool, the purpose that reaches connection, turn-offs the circulation path of medium (liquid or gas) pipeline or change medium.
Fig. 1 is for being used as the fundamental diagram of connecting, turn-offing traditional solenoid valve of medium pipeline.This traditional solenoid valve mainly is made up of field coil, static iron core, Returnning spring, spool, sealing gasket.Its working principle is: exciting voltage U and power supply (AC220V, AC110V, AC380V or DC12V, DC24V etc. when the field coil two ends; To call " excitation power supply " in the following text) when connecting; The electromagnetic force that field coil produces is greater than the elastic force of Returnning spring; The spool band sealing gasket and is drawn close to static iron core, last adhesive mutually, and the medium pipeline between A end and the B end just is switched on; When the exciting voltage U at field coil two ends and excitation power supply broke off, the spool loss of excitation also received the effect of Returnning spring and resets, and the medium pipeline between the A end is held with B just is turned off.
In sum, the working procedure of this traditional solenoid valve can be divided into " adhesive ", " sticking ", " resetting " three phases:
1, adhesive: field coil and excitation power supply are connected, spool, static iron core adhesive, and pipeline is connected.In this stage, excitation power supply must provide bigger power (being " adhesive power " to call this power in the following text), and spool could be by adhesive;
2, sticking: field coil continues to connect with excitation power supply, and spool, static iron core keep the state of adhesive, and pipeline continues to connect.In this stage, excitation power supply need only provide less power (being " holding power " to call this power in the following text), and spool also can continue adhesive.If in this stage, excitation power supply provides the same big holding power with adhesive power, will cause waste of energy and cause the unnecessary heating up of field coil;
3, reset: field coil breaks off excitation power supply, and spool, static iron core separate, pipeline resets shutoff.
The purposes of solenoid valve varies, and structure also varies, but their working principle is all identical with Fig. 1.
The also available AC power supplies of the both available DC power supply of the excitation power supply of solenoid valve.With the DC power supply is following excellent, the shortcoming of solenoid valve (hereinafter to be referred as DC electromagnetic valve) existence of excitation power supply:
1, have operate steadily, muting advantage;
2, the holding power that provides of DC power supply is the same with adhesive power big, causes waste of energy and causes the unnecessary heating up of field coil;
3, must add the DC power supply in addition, increase cost significantly.
Be excellent, the shortcoming below the solenoid valve (hereinafter to be referred as alternating current electromagnetic valve) of excitation power supply also exists with the AC power supplies:
1, convenient: available municipal AC power supplies is as its excitation power supply;
2, heating: in adhesive and sticking stage; Owing to all pass to alternating voltage (being AC voltage) in the magnet exciting coil; Therefore; To produce stagnant magnetic loss, eddy-current loss in spool and the static iron core inevitably and generate heat, magnet exciting coil is brought disaster in the heating of spool and static iron core, can cause magnet exciting coil to burn when serious.For the higher solenoid valve of medium temperature, boiling water solenoid valve for example is with the generation of this type of situation of aggravation;
3, noise: be input to the AC voltage in the field coil; During " zero passage " at every turn (AC voltage by positive half cycle to negative half period or negative half period " Zero Crossing Point ") to positive half cycle transition; Electromagnetic attraction drastic change, can make spool, static iron core produce frequency is the mechanical vibration noise of 100Hz (50Hz Ac) or 120Hz (60Hz Ac).
Excellent, shortcoming to traditional DC electromagnetic valve and alternating current electromagnetic valve existence; Aim of the present invention is with the traditional solenoid valve of electronics technical innovation; Draw direct current, alternating current electromagnetic valve advantage separately; Overcome their shortcoming, application electric technology, design a kind of electromechanical integration, with the electricity saving function electronic type noiseless solenoid valve that has concurrently of AC power supplies operation.Objectives are:
1, grasping the starting point of " must having simple and practical ability only and spread for a long time to letter " to smart, design simple as far as possible, a used device of electronic circuit try one's best solenoid valve few, that price is tried one's best honest and clean special-purpose to smart to simple " circuit unit ";
2, should " circuit unit " can be used for transforming the conventional AC solenoid valve of online use, when making these alternating current electromagnetic valves become operation muting " electronic type noiseless solenoid valve ";
3, should " circuit unit " also can be integrated in the conventional AC solenoid valve that to produce, the MANUFACTURER of solenoid valve is produced and " circuit unit " incorporate novel " electronic type noiseless solenoid valve ".
Summary of the invention
In order to reach above-mentioned target; The technological scheme of the present invention's design is: a kind of electronic type noiseless solenoid valve; Comprise circuit unit and alternating current electromagnetic valve two partly; Described circuit unit is one four port network; It is made up of input port N1, input port N2, step-down and auxiliary energy storage circuit, auxiliary rectifier circuit, energy unidirectional circuit, accumulator, output port P1, output port P2, and described input port N1 is connected with an end of auxiliary energy storage circuit with described step-down; Step-down is connected with an end of described energy unidirectional circuit at the G point with the other end of auxiliary energy storage circuit; The other end of energy unidirectional circuit is connected with described output port P1, and the field coil of described accumulator and described alternating current electromagnetic valve is in parallel, and the one of which end is connected with output port P1, the other end is connected with output port P2; Described output port P2 and input port N2 link together and have formed common port E of the present invention, the described G point of described auxiliary rectifier circuit one termination, the described common port E of another termination; Described input port N1, input port N2 are connected with S1 end, the S2 end of AC voltage respectively; Output port P1, output port P2 are connected with A1 end, the A2 end of described field coil respectively; The A2 end of the S2 of described AC voltage, input port N2, output port P2, field coil all is connected with common port E.
The S1 of described AC voltage end, S2 end can the reciprocity connecting ports, and the A1 end of described field coil, the A2 end also can the reciprocity connecting port.
The energy single-way switch that described energy unidirectional circuit is an accumulator, it is permitted electric energy and inputs to accumulator through it, and the electric energy that disapproves in the accumulator passes through its output.
Described energy unidirectional circuit and accumulator link each other, during described energy unidirectional circuit conducting, and described accumulator charging increasing electric energy; When described energy unidirectional circuit ended, described accumulator was released electric energy to the field coil discharge.
Step-down and auxiliary energy storage circuit and AC voltage and accumulator link each other, and in the stage of AC voltage to the accumulator charging, described AC voltage charges to described accumulator after described step-down and the step-down of auxiliary energy storage circuit again and increases electric energy; AC voltage by negative half period to positive half cycle transition to positive Zero Crossing Point, described step-down and auxiliary energy storage circuit contain auxiliary electric energy.
In the sticking of the present invention stage, the voltage at accumulator two ends is the dc voltage through step-down and the step-down of auxiliary energy storage circuit, the rectification of energy unidirectional circuit, and the value of the dc voltage at described accumulator two ends is much smaller than the effective value of AC voltage.
In the stage that auxiliary rectifier circuit and energy unidirectional circuit all end, the voltage at step-down and auxiliary energy storage circuit two ends remains unchanged.
At AC voltage is the stage that positive half cycle and auxiliary rectifier circuit conducting, energy unidirectional circuit end, step-down and auxiliary energy storage circuit through described auxiliary rectifier circuit to AC power supplies discharge release can, the electric energy that has obtained is returned to AC power supplies; At AC voltage is the stage that negative half period and auxiliary rectifier circuit conducting, energy unidirectional circuit end, AC power supplies through described auxiliary rectifier circuit to step-down and auxiliary energy storage circuit charging energization.
Described step-down and auxiliary energy storage circuit 101 are made up of first capacitor C 1, a termination input port N1 of described first capacitor C 1, and the other end is connected with described auxiliary rectifier circuit 102 and energy unidirectional circuit 103 at the G point.
Described auxiliary rectifier circuit 102 is made up of the first diode D1, and the negative terminal of the described first diode D1 is connected with described G point, and anode is connected with described common port E.
Described energy unidirectional circuit 103 is made up of the second diode D2, and the anode of the described second diode D2 is connected with described G point, and negative terminal is connected with described output port P1.
Described accumulator 104 is made up of storage capacitor C2, and described storage capacitor C2 and described field coil L are in parallel, and after their parallel connections, an end is connected with described output port P1, the other end is connected with described common port E.
Storage capacitor C2 is identical with the direction of field current IL to the current direction of magnetizing inductance L discharge, and the two is helped each other and keeps.
The long operation result of theory analysis and experimental prototype all proves, uses the present invention, can obtain following beneficial effect:
1, inexpensive: be used to improve extremely smart " circuit unit " to letter of conventional AC magnetic valve performance among the present invention, four electronic components are only arranged, overall cost is less than 0.5 yuan.Only spend 0.5 yuan, in the time of just can making the conventional AC solenoid valve promote the operation for premium properties muting " electronic type noiseless solenoid valve ";
2, thing is beautiful: the volume of above-mentioned four electronic components is all less, can they be integrated into the inside of conventional AC solenoid valve, manufactures the electronic type noiseless solenoid valve incorporate, that outward appearance is pleasing;
3, reliable: the reliability of electronic product and used number of electric parts are inversely proportional to, and price is directly proportional with used number of electric parts.Used electronic device is many, and electronic circuit is complicated, just means that reliability is low, price is high.The used electronic device of the present invention is few, and therefore, not only at the bottom of the cost, and reliability is high;
4, convenient: the present invention is provided with common port E, for making and using solenoid valve to bring convenience;
5, noise elimination: noise has been undisputable fact greatly during the operation of conventional AC solenoid valve, and personnel have greatly reached nothing to be surprised at, the stage of facing the fearful with no fears to conventional AC solenoid valve noise in the industry.Noiseless when the present invention moves even in the dead of night, also can't hear noise, makes the onlooker express one's surprise, wonder, etc in fact.This advantage of the present invention, for must household electric appliance noiseless operation, that be provided with solenoid valve for example refrigerator have the meaning of particular importance;
6, energy-conservation: as in following " embodiment ", also will to set forth the principle of saving power of the present invention in theory; Measured result shows that also electric energy of the present invention is greater than 65 ℅;
7, consumption reduction: in the adhesive stage, owing to be applied to dc voltage value on the field coil far below the effective value (for example 220V) of AC voltage, therefore, the number of turns of field coil can reduce, and equivalence is for having reduced the consumption of expensive enameled cable; On the other hand, because the minimizing of the field coil number of turns, operating current must increase, and equivalence is that the adhesive of spool is more strong and powerful.
Description of drawings
Fig. 1 is the fundamental diagram of alternating current electromagnetic valve;
Fig. 2 is the functional-block diagram of circuit unit of the present invention;
Fig. 3 is embodiment 1 circuit theory diagrams;
Fig. 6 a is the oscillogram of accumulator voltage U0;
Fig. 6 b is the oscillogram of step-down and auxiliary energy storage circuit voltage UC1;
Fig. 6 c is the oscillogram of AC voltage.
Fig. 7 is the scheme of installation of electronic type noiseless solenoid valve.
Embodiment
The mode of execution of circuit unit of the present invention is described below in conjunction with accompanying drawing 2-6c.
Fig. 2 is the functional-block diagram of circuit unit of the present invention, among the figure dashed rectangle 100 for circuit unit of the present invention, L be field coil, P1 and the P2 of conventional AC solenoid valve be two output ports, N1 and N2 of circuit unit 100 be circuit unit 100 two input ports, 101 for step-down and auxiliary energy storage circuit, 102 be that auxiliary rectifier circuit, 103 is that energy unidirectional circuit, AC voltage are that alternating voltage, S1, the S2 of municipal Alternating Current Power Supply net is that two input ends, the E of AC voltage is common port of the present invention.
In conjunction with Fig. 2; The present invention includes circuit unit 100 and conventional AC solenoid valve; It is characterized in that: described circuit unit 100 is one four port networks; It is made up of input port N1, input port N2, step-down and auxiliary energy storage circuit 101, auxiliary rectifier circuit 102, energy unidirectional circuit 103, accumulator 104, output port P1, output port P2; And described input port N1 is connected with an end of auxiliary energy storage circuit 101 with described step-down, and step-down is connected with an end of described energy unidirectional circuit 103 at the G point with the other end of auxiliary energy storage circuit 101; The other end of energy unidirectional circuit 103 is connected with described output port P1; Described accumulator 104 1 ends are connected with output port P1, the other end is connected with output port P2, and described output port P2 and input port N2 link together and formed common port E of the present invention, the described G point of described auxiliary rectifier circuit 102 1 terminations, the described common port E of another termination; Described input port N1, input port N2 are connected with S1 end, the S2 end of AC voltage respectively; Output port P1, output port P2 are connected with A1 end, the A2 end of the field coil L of conventional AC solenoid valve respectively; Described accumulator 104 is in parallel with described field coil L; The A2 end of the S2 of described AC voltage, input port N2, output port P2, field coil L all is connected with common port E.
It will be apparent to those skilled in the art: the S1 of described AC voltage end, S2 end can the reciprocity connecting ports, and the A1 end of described field coil L, the A2 end also can the reciprocity connecting port.
In conjunction with Fig. 2, Fig. 3:
Described step-down and auxiliary energy storage circuit 101 are made up of first capacitor C 1, a termination input port N1 of described first capacitor C 1, and the other end is connected with described auxiliary rectifier circuit 102 and energy unidirectional circuit 103 at the G point.
Described auxiliary rectifier circuit 102 is made up of the first diode D1, and the negative terminal of the described first diode D1 is connected with described G point, and anode is connected with described common port E.
Described energy unidirectional circuit 103 is made up of the second diode D2, and the anode of the described second diode D2 is connected with described G point, and negative terminal is connected with described output port P1.
Described accumulator 104 is made up of storage capacitor C2, and described storage capacitor C2 and described field coil L are in parallel, and after their parallel connections, an end is connected with described output port P1, the other end is connected with described common port E.
In conjunction with Fig. 6 c, hold the mathematic(al) representation of the AC voltage of input to be from S1, S2:
u=Umsim（ωt＋φ）
In the following formula: u is the momentary value of AC voltage, Um be AC voltage vibration amplitude, ω is the angular frequency of AC voltage, φ is the initial phase angle of AC voltage.
Be concise explanation, suppose initial phase angle φ=0 at present, then the representation of the momentary value u of AC voltage is:
u=Umsimωt
Its waveform shown in Fig. 6 c, t express time among the figure.
Say that strictly UC1, U0 etc. is the electric parameter relevant with phase place.In following analysis,, regard them as the direct current parameter for easy.
In conjunction with Fig. 4, Fig. 6 c, during t=t1, AC voltage is connected, at this moment, because before the connection of AC voltage, 1 discharge of first capacitor C finishes, the voltage U C1=0 at its two ends, in the moment that AC voltage is connected, its equivalence is short circuit.So during t=t1, AC voltage u1=Umsim ω t1 is applied directly to the two ends (having ignored the pressure drop UD2 on the second diode D2) of magnetizing inductance L, in conjunction with Fig. 1; Because spool not adhesive this moment, there is the space between itself and the static iron core, the inductance value of magnetizing inductance L is very little; Be about more than one percent of the later inductance value of the two adhesive, therefore, receive the driving of AC voltage u1=Umsim ω t1; It produces bigger field current IL, and promptly adhesive power is bigger, the spool adhesive; Solenoid valve is opened, and the present invention gets into " sticking " stage.
Fig. 6 a is the oscillogram of accumulator 104 voltage U0, and Fig. 6 b is the oscillogram of step-down and auxiliary energy storage circuit 101 voltage UC1.Among Fig. 6 a, Fig. 6 b, voltage U 0, the time dependent waveform of voltage U C1 should be smooth curve, but have replaced smooth curve with broken line among the figure.In conjunction with Fig. 4, Fig. 6 a, Fig. 6 b, Fig. 6 c, be the negative positive half cycle of AC voltage for positive S2 end at the S1 end:
T=t1Constantly; Electric current I 0 is by the path flow (C2 ∥ L representes that C2 and L are in parallel) of S1-N1-C1-D2-C2 ∥ L-P2-S2; First capacitor C 1, storage capacitor C2 begin charging, and the voltage U C1 on first capacitor C 1, the voltage U 0 on the storage capacitor C2 all progressively raise;
T=t2The time, the voltage U C1 on first capacitor C 1, the voltage U 0 on the storage capacitor C2 all rise to peak, at this moment, AC voltage u2=Umsim ω t2=Um and:
UC1＋U0＝u2?＝Um
U0=u2-UC1 ... (1) (ignored the pressure drop UD2 on the second diode D2)
More than (1) formula show:
1, in the sticking stage, the voltage U 0=u2-UC1 on the storage capacitor C2, first capacitor C 1 has hypotensive effect, and its step-down value is UC1;
2, since the capacity of storage capacitor C2 much larger than the capacity of storage capacitor C1, so UC1＞＞U0 promptly:
U0＜＜u2, or say the vibration amplitude of the value of the voltage U 0 on the storage capacitor C2 much smaller than AC voltage.
T2～t3Time domain in, according to Kirchhoff's second law (Kirchhoff's voltage law):
The bias voltage UD2=-UC1+u-U0=u-(UC1+U0) of the second diode D2 because
T=t2The time UC1+U0=u2=Um and
T2～t3Time domain in u＜u2, be prone to see that at this moment UD2=u-(UC1+U0)＜0 is that the second diode D2 ends in the territory so show you;
On the other hand: the bias voltage UD1=-u+UC1 of the first diode D1 ... (2)
In above-mentioned (2) formula, u and UC1 are time dependent electric parameters, in conjunction with Fig. 6 c, can set
T=t3The value of u=u3 equates with the value of UC1 constantly, because
T2～t4Time domain in the value of u successively decrease in time, then obvious:
T2～t3Time domain in the value of u greater than the value of UC1;
T3～t4Time domain in the value of u less than the value of UC1.
Going up according to this analysis can know:
T2～t3Time domain in UC1＜u, so can know by (2): at this moment in the territory, UD1=-u+UC1＜0, promptly the first diode D1 exists
T2～t3Time domain in the same with the second diode D2, also end;
To sum up analyze,
T2～t3Time domain in, the first diode D1, the second diode D2 all end, all equivalence is open circuit; Therefore, the voltage U C1 on first capacitor C 1 remains unchanged; Then to magnetizing inductance L discharge, its discharge current IC22 is identical with the direction of field current IL for storage capacitor C2, and the two is helped each other and keeps.
T3～t4Time domain in, AC voltage u=Umsim ω t continue to descend, the front is analyzed:
T3～t4Time domain in UC1＞u, UD1=-u+UC1=UC1-u＞0 then, so the first diode D1 conducting, the discharge current ID1 of first capacitor C 1 just discharges to AC power supplies by the path of C1-S1-S2-D1-C1, with its
T1～t2Time domain in the electric energy " returns " that obtains from AC power supplies to AC power supplies; To AC voltage by positive half cycle to " to the negative Zero Crossing Point " of negative half period transition
T=t4Constantly, AC voltage u=0, first capacitor C, 1 discharge off, the voltage U C1=0 on it.
On the other hand, the bias voltage UD2=-UD1-U0=-(UD1+U0) on the second diode D2 because
T3～t4Time domain in, the first diode D1 is conducting, so 0 UD2 ≈-U0＜0 of UD1 ≈ promptly exists
T3～t4Time domain in, the second diode D2 ends, storage capacitor C2 then continues magnetizing inductance L is discharged.
T4～t7Time domain in, AC voltage is that S2 rectifies, the negative negative half period of S1 end.Embodiment 1 charge and discharge process figure when Fig. 5 is AC voltage negative half cycle, the UC1 among Fig. 5 is just in time opposite with the polarity of the UC1 among Fig. 4.In conjunction with Fig. 6 b, if the change curve of the UC1 during the positive half cycle of AC voltage shown in Figure 4 is positioned at the top of Fig. 6 b transverse axis; The change curve of UC1 during AC voltage negative half cycle so, shown in Figure 5 just should be positioned at the below of Fig. 6 b transverse axis.
In conjunction with Fig. 5, Fig. 6 a, Fig. 6 b, Fig. 6 c,
T4～t5Time domain in:
UD1=u-UC1, because
T=t4The moment first capacitor C, 1 discharge off, the voltage U C1=0 on it,
So
T4～t5Time domain in, the path that UD1=u-UC1＞0, the first diode D1 conducting, electric current I D1 press S2-D1-C1-S1 is to 1 charging of first capacitor C;
Extremely
T=t5Constantly, the voltage U C1=u5=Umsim ω t5=Um on first capacitor C 1
T5～t6Time domain in because the absolute value of AC voltage u is less than the value of UC1, so UD1=u-UC1＜0, promptly the first diode D1 ends, to the electric current I D1=0 that first capacitor C 1 is charged, the magnitude of voltage on first capacitor C 1 still keeps UC1=u5=Umsim ω t5=Um constant.
On the other hand, in conjunction with Fig. 5, bias voltage UD2 being characterized as when AC voltage is negative half period on the second diode D2:
1, exists
T4～t5Time domain in; Because the conducting of the first diode D1, the bias voltage UD1 ≈ 0 on it is considered as short circuit; So the described second diode D2 in bias voltage UD2 ≈-U0＜0 on the described second diode D2 ends, storage capacitor C2 then continues magnetizing inductance L is discharged in the territory at this moment;
2, exist
T5～t6Time domain in because the first diode D1 ends, be considered as open circuit, so:
UD2=?UC1－u－U0=?UC1－（u＋U0）………………………（3）
In above-mentioned (3) formula, owing to UC1, u, U0 are time dependent electric parameters, therefore, analyzing UD2 is a very complicated process, but can establish with reference to the analytical method of (2) formula
T=t6Constantly UC1-(u+U0)=0, that is: UC1=u+U0.Then combine Fig. 5, Fig. 6 c to know:
T5～t6Time domain in: u+U0＞UC1 ... (4)
T6～t7Time domain in: u+U0＜UC1 ... (5)
With (4) formula substitution (3) formula, can know UD2＜0, so described
T5～t6Time domain in, the second diode D2 still still continues magnetizing inductance L is discharged by, storage capacitor C2;
With (5) formula substitution (3) formula, can know UD2＞0, so described
T6～t7Time domain in, the second diode D2 conducting, first capacitor C 1 is carried out auxiliary charging through the path of C1-D2-C2 ∥ L-S2-S1-N1-C1 to storage capacitor C2, storage capacitor C2 obtains this auxiliary energy and replenishes, the voltage U 0 on it rises again.
3, extremely
T=t7Constantly, AC voltage u=0 is for AC voltage is S1 end, S2 terminal shortcircuit by negative half period to " to positive Zero Crossing Point " equivalence of positive half cycle transition.The circuit of analysis chart 5 can be known:
T=t7" to the positive Zero Crossing Point " of AC voltage, the discharge of 1 couple of storage capacitor C2 of first capacitor C finishes, and the voltage U 07 on the voltage U C17 at its two ends and the storage capacitor C2 reaches balance, i.e. UC17=U07.At this moment, containing voltage on described first capacitor C 1 is " assisting " electric energy of UC17, and the polarity of described voltage U C17 is: the G point is for just, and the N1 end is for negative.
Cross at AC voltage " to positive Zero Crossing Point "
T7～t8In the time domain, AC voltage reverts to positive half cycle, in conjunction with Fig. 4; Bias voltage UD2=UC17+u-U07=u+ (UC17-U07)=u＞0 on the second diode D2; The described second diode D2 conducting, first capacitor C 1 is released electric energy through second diode D2 discharge, extremely
T=t8Constantly, discharge finishes, its voltage UC1=0.
At this
T7～t8Time domain in, the voltage U 0 on the storage capacitor C2 receives the AC voltage u of positive half cycle and double action that electric energy is released in the discharge of first capacitor C 1 and fast rise.
After, the working procedure of present embodiment is identical with the process of having stated, no longer repeats here.
Comprehensive above analysis combines accompanying drawing again, can illustrate the technical characteristics below the present invention:
1, the energy unidirectional circuit is the energy single-way switch of accumulator, and its " only import but no export " only permitted electric energy and inputed to accumulator through it, and the electric energy that disapproves in the accumulator passes through its output.
2, energy unidirectional circuit and accumulator link each other, during described energy unidirectional circuit conducting (
T1～t2With
T6～t8Time domain in), described accumulator charging increasing electric energy; When described energy unidirectional circuit ends (
T2～t6Time domain in), described accumulator is released electric energy to field coil discharge.
3, step-down and auxiliary energy storage circuit and AC voltage and accumulator link each other, AC voltage to stage of accumulator charging (
T1～t2Time domain in), described AC voltage charges to described accumulator behind described step-down and auxiliary energy storage circuit " step-down " again and increases electric energy; AC voltage by negative half period to positive half cycle transition to positive Zero Crossing Point, described step-down and auxiliary energy storage circuit contain " assisting " electric energy that voltage is UC17.
4, in the sticking of the present invention stage, the voltage at accumulator two ends is through step-down and the step-down of auxiliary energy storage circuit, through the dc voltage of energy unidirectional circuit rectification, and the value of the dc voltage at described accumulator two ends is much smaller than the vibration amplitude of AC voltage.
5, stage that auxiliary rectifier circuit and energy unidirectional circuit all end (
T2～t3With
T5～t6Time domain in), the voltage at step-down and auxiliary energy storage circuit two ends remains unchanged.
6, AC voltage be stage of ending of positive half cycle and auxiliary rectifier circuit conducting, energy unidirectional circuit (
T3～t4Time domain in), step-down and auxiliary energy storage circuit are released ability through described auxiliary rectifier circuit to AC power supplies discharge, and the electric energy that has obtained is returned to AC power supplies; AC voltage be stage of ending of negative half period and auxiliary rectifier circuit conducting, energy unidirectional circuit (
T4～t5Time domain in), AC power supplies through described auxiliary rectifier circuit to step-down and the auxiliary energy storage circuit energization that charges.
7, storage capacitor C2 is identical with the direction of field current IL to the direction of the electric current I C22 of magnetizing inductance L discharge, and the two is helped each other and keeps.
The muting mechanism of the present invention: the conventional AC solenoid valve is in the sticking stage, is input to AC voltage in the field coil near " to negative Zero Crossing Point " and " to positive Zero Crossing Point ", the instantaneous voltage u of AC power supplies
≈0, field current IL ≈ 0, magnetic force are less than the elastic force of Returnning spring, and spool will leave static iron core, but that it has just left is very little-during segment distance, the momentary value u of AC voltage has become greatly, then the spool that leaves again by magnetic force retract, spool, static iron core adhesive again.In this process, spool, static iron core will inevitably produce the mechanical vibration noise that the frequency that is difficult to avoid is 100Hz (50Hz Ac) or 120Hz (60Hz Ac).
In conjunction with Fig. 6 a, precedingly stated the present invention for DC operation, there is not above-mentioned noise, the selection of component parameters guarantees its stably " sticking " again, therefore, present embodiment has the premium properties of " noiseless ".
Energy saving mechanism:
1, the conventional AC solenoid valve is in adhesive, sticking stage, and the field coil two ends pass to AC voltage all the time, will produce stagnant magnetic loss, eddy current loss in spool and the static iron core inevitably and the heating of consuming energy.And the present invention applies in field coil is the dc voltage U0 through 103 rectifications of energy unidirectional circuit, accumulator 104 filtering, does not have described stagnant magnetic loss, eddy current loss;
2, precedingly state; The conventional AC solenoid valve is in adhesive, sticking stage; The field coil two ends pass to the AC voltage that effective value is 110V, 220V or 380V all the time; The present invention is in the sticking stage, because the step-down of step-down and auxiliary energy storage circuit 101, the value of the dc voltage U0 at field coil two ends is much smaller than the vibration amplitude Um of AC voltage.Because the effective value of AC voltage equals Um
/√ 2, so the value of dc voltage U0 that also we can say field coil of the present invention two ends is much smaller than the effective value of AC voltage.
Exactly because the value of the dc voltage U0 at field coil of the present invention two ends is much smaller than the effective value of AC voltage, holding power of the present invention is much smaller than the holding power of conventional AC solenoid valve.
The personnel that this is professional are not difficult to understand Energy saving mechanism of the present invention from above two aspects.
Measured result is compared with the conventional AC solenoid valve, and electric energy of the present invention is greater than 65%.
The height of temperature rise was the embodiment directly perceived of power consumption size when solenoid valve was worked, under the condition of 20 ℃ of room temperatures, and conventional AC solenoid valve start 20 minutes, temperature rise just surpasses 60 ℃, and the present invention started shooting 8 hours continuously, temperature rise is lower than 40 ℃.
As indicated above, through combining Fig. 2-6c the working principle and the process of circuit unit 100 have been described.The mounting structure of electronic type noiseless solenoid valve of the present invention is described below in conjunction with Fig. 7.
Wherein, Fig. 7 left side shows the right elevation of being seen alternating current electromagnetic valve in the past by the right of Fig. 1, and Fig. 7 right side shows the insulation booth 200 that circuit unit 100 is installed, and the material of this insulation booth 200 can be formed by related domain insulating material commonly used.
Like Fig. 7; Have two jack A1 and A2 on the alternating current electromagnetic valve; These two jacks correspond respectively to the two ends of the described field coil L of preamble; Circuit unit 100 is installed in the insulation booth 200, and this insulation booth 200 is provided with two plugs, and it is electrically connected to the output port P1 and the common port E of circuit unit 100 respectively; Through two plugs on the insulation booth 200 being aimed at two jacks on the alternating current electromagnetic valve and inserting, what insulation booth 200 just can be firm is fixed on the alternating current electromagnetic valve, thereby can obtain electronic type noiseless solenoid valve of the present invention.
Through the insulation booth that circuit unit 100 is installed 200 mentioned above is set, electronic type noiseless solenoid valve of the present invention just can be used more flexibly.Of preamble; Because circuit unit 100 of the present invention only has four electronic components; And the cost of these four electronic components is very low, therefore, in case the circuit unit 100 in the insulation booth 200 breaks down; So only need to replace the insulation booth of this fault with another same insulation booth that component 100 is housed 200, electronic type noiseless solenoid valve so of the present invention can be quick and cheap obtains repairing.
More than set forth technological scheme of the present invention, all technology that do not break away from technological scheme essence of the present invention substitute, all should be in the scope of claim of the present invention.
Claims (4)
1. electronic type noiseless solenoid valve, it comprises: circuit unit (100) and alternating current electromagnetic valve two partly is characterized in that:
Described circuit unit (100) is one four port network, and it has two input port N1 and input port N2, two output port P1 and P2; Said input port N1 holds with S1 end and S2 that N2 is connected municipal AC network AC voltage respectively, and said output port P1 holds with A1 and A2 that P2 is connected field coil L respectively; Said circuit unit (100) also has: step-down and auxiliary energy storage circuit (101), auxiliary rectifier circuit (102), energy unidirectional circuit (103) and accumulator (104); Wherein,
Said step-down and auxiliary energy storage circuit (101) are made up of the first capacitor C1; Said auxiliary rectifier circuit (102) is made up of the first diode D1; Said energy unidirectional circuit (103) is made up of the second diode D2, and said accumulator (104) is made up of storage capacitor C2;
The circuit connecting relation of said circuit unit (100) is: input port N1 connects the end of the said first capacitor C1; The other end of the said first capacitor C1 connects the negative pole of the said first diode D1 and the positive pole of the said second diode D2, the negative pole of the said second diode D2 be connected to output port P1 jointly after the end of said storage capacitor C2 is connected; And the positive pole of said input port N2, the first diode D1, the other end of said storage capacitor C2 and output port P2 insert common port E jointly;
And said electronic type noiseless solenoid valve also comprises the insulation booth (200) that said circuit unit (100) are housed.
2. electronic type noiseless solenoid valve as claimed in claim 1 is characterized in that:
Said insulation booth (200) has two plugs, and it is electrically connected the input port N1 and the common port E of circuit unit (100) respectively; Have two jacks on the said alternating current electromagnetic valve; Said two jacks are electrically connected two input end A1 and the A2 of said field coil L respectively, and the insulation booth (200) that circuit unit (100) are installed is installed on the said alternating current electromagnetic valve through two jacks that its two plugs are inserted alternating current electromagnetic valve.
3. circuit unit as claimed in claim 1 (100) is characterized in that:
The S1 of described AC voltage end, S2 end can the reciprocity connecting ports, and the A1 end of described field coil L, the A2 end also can the reciprocity connecting port.
4. circuit unit as claimed in claim 3 (100); It is characterized in that: described energy unidirectional circuit (103) is the energy single-way switch of accumulator (104); It is permitted electric energy and inputs to accumulator (104) through it, and the electric energy that disapproves in the accumulator (104) passes through its output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210108538 CN102620032B (en) | 2012-04-14 | 2012-04-14 | Electronic noiseless electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210108538 CN102620032B (en) | 2012-04-14 | 2012-04-14 | Electronic noiseless electromagnetic valve |
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| CN102620032A true CN102620032A (en) | 2012-08-01 |
| CN102620032B CN102620032B (en) | 2013-06-19 |
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| JPH02240478A (en) * | 1989-03-10 | 1990-09-25 | Mikuni Corp | Driving circuit for latch valve |
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| DE19747033A1 (en) * | 1997-10-24 | 1999-04-29 | Daimler Chrysler Ag | Electronic switching device for magnets, esp. electromagnetic valve control elements for an internal combustion engine |
| JP2000299985A (en) * | 1999-04-13 | 2000-10-24 | Matsushita Electric Ind Co Ltd | Power supply circuit and power supply device using the same |
| JP2004242485A (en) * | 2003-02-05 | 2004-08-26 | Odeo:Kk | Power supply for solenoid valve |
| CN2846941Y (en) * | 2005-07-21 | 2006-12-13 | 湖南省安化自控设备有限责任公司 | High efficiency energy saving electromagnetic valve |
| CN101696747A (en) * | 2009-10-16 | 2010-04-21 | 天津市天高化工科技有限公司 | Low-power drive circuit of DC electromagnetic valve |
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2012
- 2012-04-14 CN CN 201210108538 patent/CN102620032B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02240478A (en) * | 1989-03-10 | 1990-09-25 | Mikuni Corp | Driving circuit for latch valve |
| CN2136368Y (en) * | 1992-09-21 | 1993-06-16 | 黄晓昆 | Energy-saving soundless ac or dc electromagnetic discharging valve |
| DE19747033A1 (en) * | 1997-10-24 | 1999-04-29 | Daimler Chrysler Ag | Electronic switching device for magnets, esp. electromagnetic valve control elements for an internal combustion engine |
| JP2000299985A (en) * | 1999-04-13 | 2000-10-24 | Matsushita Electric Ind Co Ltd | Power supply circuit and power supply device using the same |
| JP2004242485A (en) * | 2003-02-05 | 2004-08-26 | Odeo:Kk | Power supply for solenoid valve |
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| CN101696747A (en) * | 2009-10-16 | 2010-04-21 | 天津市天高化工科技有限公司 | Low-power drive circuit of DC electromagnetic valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102620032B (en) | 2013-06-19 |
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Effective date of registration: 20151214 Address after: 518000 Guangdong city of Shenzhen province Nanshan District Guangdong streets high tech Zone Central Research Road No. 9 Beek building 2301-J Patentee after: Shenzhen Haili Industrial Equipment Co. Ltd. Address before: 315200 Zhejiang province Zhenhai District of Ningbo City Jiao Chuan Ying Shi Qiao Zhu No. 74 Patentee before: Ningbo Zhenhai Huatai Electric Factory |