CN209497441U - Drive control circuit and household appliance - Google Patents
Drive control circuit and household appliance Download PDFInfo
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- CN209497441U CN209497441U CN201920379193.4U CN201920379193U CN209497441U CN 209497441 U CN209497441 U CN 209497441U CN 201920379193 U CN201920379193 U CN 201920379193U CN 209497441 U CN209497441 U CN 209497441U
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Abstract
The utility model provides a kind of drive control circuit and household appliance, wherein, drive control circuit includes: latch-in relay, and the moving contact of latch-in relay accesses in network system, when latch-in relay is in energized state, network system can be controlled and powered to the load；First relay, first relay is set there are four contact, the first contact and the second contact in four contacts are normally-closed contact, third contact and the 4th contact in four contacts are normally opened contact, first contact and the 4th contact are connected to power supply source, second contact and third contact are connected to ground wire, the moving contact of first relay is connected to the control terminal of latch-in relay, first relay is configured as to latch-in relay output pulse signal, and pulse signal is high level pulse signal or low level pulse signal.By the technical solution of the utility model, the power consumption of drive control circuit is reduced, electric leakage, device heating bring damaged risk are reduced, to extend service life.
Description
Technical field
The utility model relates to field of circuit technology, set in particular to a kind of drive control circuit and a kind of household electrical appliances
It is standby.
Background technique
Relay is widely used in drive control circuit as a kind of control component, plays automatic adjustment, safety is protected
The effects of shield, conversion circuit.
For example, in the drive control circuit of the outdoor unit of frequency-conversion air-conditioning system, input AC electricity mistake when to avoid powering on
Large impact capacitor often limits charging current using traditional relay, i.e., by control relay power or power-off, and
Change the power supply state of drive control circuit.
In the related technology, as shown in Figure 1, traditional relay is in closed state, and tradition when control circuit works
Relay and a positive temperature coefficient thermo-sensitive resistor RpctParallel connection, traditional relay are closed (a control under power-up state
Terminate into power supply source VCC, a control terminal is grounded GND), ac signal AC is input to whole through the moving contact of relay at this time
Fluid element, starting load operates after capacitive element C boosting, i.e., need to persistently remain powered on, this just at least has following technical problem:
(1) power supply state of drive control circuit is controlled due to needing lasting energization, drive control circuit can be improved
Power consumption.
It (2) is 50Hz since load is usually frequency on relay, virtual value is the AC signal of 220V, therefore, is kept
Relay is persistently powered, and there are leakage risks.
(3) if frequently carrying out power-on servicing and power operation to relay, it will lead in drive control circuit and occur
The disturbing pulses such as surging signal and ripple signal, this will lead to some components steep temperature rise in drive control circuit, very
To being burned out, this not only will affect the reliability of local device, can also improve the hot crosstalk in drive control circuit.
Utility model content
The utility model aims to solve at least one of above-mentioned technical problems existing in the prior art or related technologies.
For this purpose, a purpose of the utility model is to propose a kind of drive control circuit.
Another purpose of the utility model is to propose a kind of household appliance.
To achieve the above object, the embodiment of first aspect according to the present utility model proposes a kind of drive control electricity
Road, comprising: the moving contact of latch-in relay, the latch-in relay accesses the self-sustaining relay in network system
When device is in energized state, the network system can be controlled and powered to the load；First relay, first relay are equipped with
Four contacts, the first contact and the second contact in four contacts are normally-closed contact, the third touching in four contacts
Point and the 4th contact are normally opened contact, and first contact and the 4th contact are connected to power supply source, second contact and
The third contact is connected to ground wire, and the moving contact of first relay is connected to the control terminal of the latch-in relay,
First relay is configured as to the latch-in relay output pulse signal, and the pulse signal is high level pulse
Signal or low level pulse signal, wherein if the first control terminal of the latch-in relay receives the high level pulse
Signal, meanwhile, the second control terminal of the latch-in relay receives the low level pulse signal, then the self-sustaining after
The moving contact of electric appliance carries out movement switching, and the shape after the upper primary movement switching is kept before receiving next pulse signal
State, the movement, which is switched to, switches to disconnection by closure, or switches to closure by disconnection.
According to the drive control circuit of the utility model embodiment, by the way that self-sustaining relay is arranged in drive control circuit
Device can be by mechanical structure self-sustaining, without continuing after energization since latch-in relay is a kind of mechanical relay
It is powered, this greatly reduces energy consumption for occasion in running order for a long time, and the working time is longer, average energy
Consumption is fewer, meanwhile, electric leakage, device heating bring damaged risk are reduced, to extend each in above-mentioned drive control circuit
The service life of component.
In addition, driven by using the first relay to latch-in relay, and the first relay have it is above-mentioned
Four contacts limited, therefore, by the movement of the moving contact of the first relay to latch-in relay output pulse signal,
When two control terminals of latch-in relay are respectively high level and low level, it is able to carry out movement switching, and then control power grid
The process of system input exchange signal.
Wherein, it is worth it is emphasized that the first relay does not need to be kept powered on state yet, it is complete in latch-in relay
Electric under the first relay after movement switching, two control terminals of latch-in relay are low level, after keeping switching at this time
Action state.
Finally, power supply source is preferably the DC source of 5V, 12V or 24V.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that further include: the second relay is set to
Power supply line between first relay and the power supply source, for controlling power supply line's closing or opening；If institute
It states the second relay to power on, then power supply line's closure between first relay and the power supply source, meanwhile, described first
Contact and the 4th contact are high level state and second contact and the third contact is low level state；If
Electric under second relay, then the power supply line between first relay and the power supply source is disconnected.
According to the drive control circuit of the utility model embodiment, pass through the power supply between the first relay and power supply source
Second relay is set on route, and the second relay controls whether the first relay powers on, namely in the first relay
It,, can be to the two of latch-in relay after the moving contact of the second relay acts after the second relay also powers on when powering on
A control terminal output high level pulse signal and low level pulse signal, and then control latch-in relay and carry out movement switching.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that first relay is that double-pole is double
Type relay is thrown, if electric under first relay, and second relay is powered on, then the moving contact of first relay
It is in contact with first contact and the second contact, meanwhile, first contact is high level state, and second contact is low
The moving contact of level state, the latch-in relay carries out movement switching.
It is double-pole double throw type relay by the first relay of setting according to the drive control circuit of the utility model embodiment
Device, and when the second relay powers on, if the first relay is in power-down state, the setting of relay normally closed contact is given,
First contact is high level state, and second contact is low level state, at this point, the moving contact of the first relay is to self-sustaining
Two control terminals of relay export high level pulse signal and low level pulse signal respectively, complete in latch-in relay dynamic
It, can be to electricity under the second relay, further to reduce the power consumption of drive control circuit after work switches.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that first relay is that double-pole is double
Type relay is thrown, if first relay powers on, and second relay powers on, then the moving contact of first relay
It is in contact with the third contact and the 4th contact, meanwhile, the third contact is low level state, and the 4th contact is height
The moving contact of level state, the latch-in relay carries out movement switching.
It is double-pole double throw type relay by the first relay of setting according to the drive control circuit of the utility model embodiment
Device, and when the second relay powers on, the first relay also enters power-up state, at this point, the moving contact of the first relay is by normal
Closed contact switches to normally opened contact, i.e. moving contact contact third contact and the 4th contact, meanwhile, to two of latch-in relay
The pulse signal overturning of control terminal input, and then the moving contact of latch-in relay carries out movement switching.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that first relay is that double-pole is double
Type relay is thrown, if electric under first relay and electric under second relay, then the dynamic touching of the latch-in relay
Head switches without movement, and before receiving next pulse signal, and the moving contact of the latch-in relay is kept
State after one-off switching.
It is double-pole double throw type relay by the first relay of setting according to the drive control circuit of the utility model embodiment
Device, and after controlling the first relay and the second relay with electricity at present, the moving contact of latch-in relay is able to maintain dynamic
Make the state after switching, can not only power supply process Process flowchart to network system, and reduce power consumption penalty, meanwhile,
Also reduce the electric leakage hidden danger of drive control circuit.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that further include: the first positive temperature coefficient temperature
Quick resistance, the first positive temperature coefficient thermo-sensitive resistor are parallel to the latch-in relay, the first positive temperature coefficient temperature
Quick resistance is configured as carrying out current limliting processing to the electric energy that the network system inputs, wherein the latch-in relay moves
When contact disconnects, the electric energy of network system input through the first positive temperature coefficient thermo-sensitive resistor to the load supplying,
Or the moving contact of the latch-in relay is in the closure state, the electric energy of network system input through the self-sustaining after
The moving contact of electric appliance is to the load supplying.
According to the drive control circuit of the utility model embodiment, by the way that the first positive temperature coefficient thermo-sensitive resistor is arranged, and
It is in parallel with latch-in relay, on the one hand, in latch-in relay closure, network system supplies load through latch-in relay
Electricity, on the other hand, when latch-in relay disconnects, network system supplies load through the first positive temperature coefficient thermo-sensitive resistor
Electricity, the first positive temperature coefficient thermo-sensitive resistor can absorb the electric arc or surging signal etc. that power-off generates, in another aspect, flowing through the
When the AC signal of one positive temperature coefficient thermo-sensitive resistor is larger, the resistance value of the first positive temperature coefficient thermo-sensitive resistor usually exponentially increases
It is long, it is at this time off state between network system and load, also timely and effectively AC signal can be blocked to rush load
It hits.
Wherein, positive temperature coefficient typically refers to Positive Temperature Coefficient, therefore, positive temperature system
Number thermo-sensitive resistor is often simply referred to as PTC.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that further include: the second positive temperature coefficient temperature
Quick resistance, the second positive temperature coefficient thermo-sensitive resistor are parallel to second relay, and second positive temperature coefficient is temperature sensitive
Resistance is configured as carrying out current limliting processing to second relay；Wherein, when the moving contact of second relay disconnects, institute
The electric energy for stating power supply source input powers to first relay through the second positive temperature coefficient thermo-sensitive resistor；Or described second
In the closure state, moving contact of the electric energy through second relay of the power supply source input is to institute for the moving contact of relay
State the power supply of the first relay.
According to the drive control circuit of the utility model embodiment, by the way that the second positive temperature coefficient thermo-sensitive resistor is arranged, and
It is in parallel with the second relay, on the one hand, in the second relay closure, power supply source is through the second positive temperature coefficient thermo-sensitive resistor to institute
The power supply of the first relay is stated, on the other hand, when the second relay disconnects, power supply source is through the second positive temperature coefficient thermo-sensitive resistor pair
First relay is powered, and the second positive temperature coefficient thermo-sensitive resistor can absorb the electric arc that power-off generates or surging signal etc.,
In another aspect, when the AC signal for flowing through the second positive temperature coefficient thermo-sensitive resistor is larger, the second positive temperature coefficient thermo-sensitive resistor
Resistance value be usually exponentially increased, at this time between power supply source and the first relay be in off state, also can be timely and effectively
Block impact of the AC signal to the first relay.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that further include: rectifier cell, access in
Between the latch-in relay and the load, the rectifier cell is configured as the alternating current for exporting the network system
Signal is converted to DC signal, and the DC signal is configured as to the load supplying.
According to the drive control circuit of the utility model embodiment, by by rectifier cell access in latch-in relay with
Between load, ac signal is converted into DC signal, and then can adjust to the power factor of DC signal
It is whole, to adjust the running frequency and working efficiency of load.
Wherein, rectifier cell is usually bridge architecture, and each bridge arm includes a diode, the cathode of any diode
Connect with the anode with neighboring diode and the anode of any diode connects with the cathode of another neighboring diode.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that further include: capacitive element is set to institute
It states between the output end of rectifier cell and the input terminal of the load, for filtering out between the rectifier cell and the load
AC signal.
According to the drive control circuit of the utility model embodiment, by the way that capacitive element is set to rectifier cell and load
Between input terminal, on the one hand, capacitive element helps to reduce impact of the ripple signal to load in power up, on the other hand,
Capacitive element is usually to have energy-storage function, therefore, being capable of starting load when load potential difference is sufficiently large on capacitive element.
Wherein, capacitive element can be one or more capacitors, be accessed in a manner of series connection/or parallel connection, for example, capacitive member
Part can be an electrolytic capacitor, be also possible to thin-film capacitor, but not limited to this.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that the load includes following at least one
Kind: direct current generator, alternating current generator, fluorescent tube, display and buzzer.
A kind of embodiment of second aspect according to the present utility model, it is also proposed that household appliance, comprising: load；As above
It states any one technical solution and limits drive control circuit, drive control circuit, drive control circuit access is in network system and bears
Between load, drive control circuit is configured as control network system and powers to the load.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that household appliance includes air conditioner, electric ice
At least one of case, fan, cooking apparatus, lighting apparatus, audio-visual devices and cleaning equipment.
According to the household appliance of the utility model embodiment, have whole technical effects of above-mentioned drive control circuit,
This is repeated no more.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
Fig. 1 shows the schematic diagram of drive control circuit in the prior art；
Fig. 2 shows the schematic diagrames of the drive control circuit of one embodiment according to the present utility model；
Fig. 3 shows the schematic diagram of the drive control circuit of another embodiment according to the present utility model.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously
It is not limited by the specific embodiments disclosed below.
Fig. 2 shows the schematic diagrames of the drive control circuit of one embodiment according to the present utility model.
Fig. 3 shows the schematic diagram of the drive control circuit of another embodiment according to the present utility model.
As shown in Figures 2 and 3, the drive control circuit of embodiment according to the present utility model, comprising: latch-in relay
Q2, the latch-in relay Q2Moving contact access in network system, the latch-in relay Q2In energized state
When, the network system can be controlled and powered to the load；First relay Q1, the first relay Q1If there are four contact, four
The first contact P in a contact1With the second contact P2Third contact P for normally-closed contact, in four contacts3With
Four contact P4For normally opened contact, the first contact P1With the 4th contact P4It is connected to power supply source VCC, second contact
P2With the third contact P3It is connected to ground wire GND, the first relay Q1Moving contact be connected to the latch-in relay
Q2Control terminal, the first relay Q1It is configured as to the latch-in relay Q2Output pulse signal, the pulse letter
Number be high level pulse signal or low level pulse signal, wherein if the latch-in relay Q2The first control terminal receive
To the high level pulse signal, meanwhile, the latch-in relay Q2The second control terminal receive the low level pulse
Signal, then the latch-in relay Q2Moving contact carry out movement switching, and before receiving next pulse signal keep on
State after the primary movement switching, the movement, which is switched to, switches to disconnection by closure, or switches to closure by disconnection.
According to the drive control circuit of the utility model embodiment, by the way that self-sustaining relay is arranged in drive control circuit
Device Q2, due to latch-in relay Q2A kind of mechanical relay, after energization can by mechanical structure self-sustaining, without
Lasting to be powered, this greatly reduces energy consumption for occasion in running order for a long time, and the working time is longer, puts down
Equal energy consumption is fewer, meanwhile, electric leakage, device heating bring damaged risk are reduced, to extend above-mentioned drive control circuit
In each component service life.
In addition, by using the first relay Q1To latch-in relay Q2It is driven, and the first relay Q1Have
Therefore four contacts of above-mentioned restriction pass through the first relay Q1Moving contact movement to latch-in relay Q2Export pulse
Signal, in latch-in relay Q2Two control terminals when being respectively high level and low level, be able to carry out movement switching, in turn
Control the process of network system input exchange signal.
Wherein, it is worth it is emphasized that the first relay Q1It does not need to be kept powered on state, in latch-in relay yet
Q2After execution switching, the first relay Q1Lower electricity, latch-in relay Q2Two control terminals be low level, keep at this time
Action state after switching.
Finally, power supply source VCC is preferably the DC source of 5V, 12V or 24V.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that further include: the second relay Q3If
In the first relay Q1With the power supply line between the power supply source VCC, for controlling power supply line closure or disconnected
It opens；If the second relay Q3It powers on, then the first relay Q1Power supply line's closure between the power supply source VCC,
Meanwhile the first contact P1With the 4th contact P4For high level state and the second contact P2It is touched with the third
Point P3For low level state；If the second relay Q3Lower electricity, then the first relay Q1Between the power supply source VCC
Power supply line it is disconnected.
According to the drive control circuit of the utility model embodiment, by the first relay Q1Between power supply source VCC
Power supply line on the second relay Q is set3, and the second relay Q3To control the first relay Q1Whether power on, Ye Ji
First relay Q1When powering on, the second relay Q3Also after powering on, the second relay Q3Moving contact act after, Neng Gouxiang
Latch-in relay Q2Two control terminals output high level pulse signal and low level pulse signal, and then control self-sustaining after
Electric appliance Q2Carry out movement switching.
As shown in Fig. 2, according to the drive control circuit of the utility model above-described embodiment, it is preferable that first relay
Device Q1For double-pole double throw type relay, if the first relay Q1Lower electricity, and the second relay Q3It powers on, then described
One relay Q1Moving contact be in contact with first contact and the second contact, meanwhile, the first contact P1For high level shape
State, the second contact P2For low level state, the latch-in relay Q2Moving contact carry out movement switching.
According to the drive control circuit of the utility model embodiment, by the way that the first relay Q is arranged1For double-pole double throw type after
Electric appliance, and in the second relay Q3When powering on, the first relay Q1If being in power-down state, relay normally closed contact is given
Setting, the first contact P1For high level state, the second contact P2For low level state, at this point, the first relay Q1Dynamic touching
Head is to latch-in relay Q2Two control terminals export high level pulse signal and low level pulse signal respectively, in self-sustaining
Relay Q2It, can be to the second relay Q after execution switching3Lower electricity, further to reduce the function of drive control circuit
Consumption.
As shown in figure 3, according to the drive control circuit of the utility model above-described embodiment, it is preferable that first relay
Device Q1For double-pole double throw type relay, if the first relay Q1It powers on, and the second relay Q3It powers on, then described
One relay Q1Moving contact and the third contact P3With the 4th contact P4It is in contact, meanwhile, the third contact P3For low electricity
Level state, the 4th contact P4For high level state, the latch-in relay Q2Moving contact carry out movement switching.
According to the drive control circuit of the utility model embodiment, by the way that the first relay Q is arranged1For double-pole double throw type after
Electric appliance, and in the second relay Q3When powering on, the first relay Q1Also enter power-up state, at this point, the first relay Q1Dynamic touching
Head switches to normally opened contact by normally-closed contact, i.e. moving contact contacts third contact P3With the 4th contact P4, meanwhile, to self-sustaining after
Electric appliance Q2The input of two control terminals pulse signal overturning, and then latch-in relay Q2Moving contact carry out movement switching.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that the first relay Q1For double-pole
Double-throw type relay, if the first relay Q1Lower electricity, and the second relay Q3Lower electricity, the then latch-in relay
Q2Moving contact switch without movement, and before receiving the next pulse signal, the latch-in relay Q2Dynamic touching
Head keeps the state after last movement switching.
According to the drive control circuit of the utility model embodiment, by the way that the first relay Q is arranged1For double-pole double throw type after
Electric appliance, and controlling the first relay Q1With the second relay Q3After electricity at present, latch-in relay Q2Moving contact can
State after holding movement switching, can not only power supply process Process flowchart to network system, and reduce power consumption penalty,
Meanwhile also reducing the electric leakage hidden danger of drive control circuit.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that further include: the first positive temperature coefficient temperature
Quick resistance Rptc, the first positive temperature coefficient thermo-sensitive resistor RptcIt is parallel to the latch-in relay Q2, the described first positive temperature
Spend coefficient thermo-sensitive resistor RptcIt is configured as carrying out current limliting processing to the electric energy that the network system inputs, wherein the self-sustaining
Relay Q2Moving contact when disconnecting, the electric energy of network system input is through the first positive temperature coefficient thermo-sensitive resistor Rptc
To the load supplying or the latch-in relay Q2Moving contact in the closure state, network system input
Electric energy is through the latch-in relay Q2Moving contact to the load supplying.
According to the drive control circuit of the utility model embodiment, by the way that the first positive temperature coefficient thermo-sensitive resistor R is arrangedptc,
And with latch-in relay Q2It is in parallel, on the one hand, in latch-in relay Q2When closure, network system is through latch-in relay Q2
To load supplying, on the other hand, in latch-in relay Q2When disconnection, network system is through the first positive temperature coefficient thermo-sensitive resistor
RptcLoad is powered, the first positive temperature coefficient thermo-sensitive resistor RptcElectric arc or surging signal that power-off generates can be absorbed
Deng in another aspect, flowing through the first positive temperature coefficient thermo-sensitive resistor RptcAC signal it is larger when, the first positive temperature coefficient temperature
Quick resistance RptcResistance value be usually exponentially increased, at this time network system and load between be in off state, can also have in time
Imitate disconnected impact of the AC signal to load of ground resistance.
Wherein, positive temperature coefficient typically refers to Positive Temperature Coefficient, therefore, positive temperature system
Number thermo-sensitive resistor RptcIt is often simply referred to as PTC.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that further include: the second positive temperature coefficient temperature
Quick resistance Rptc, the second positive temperature coefficient thermo-sensitive resistor RptcIt is parallel to the second relay Q3, the second positive temperature
Coefficient thermo-sensitive resistor RptcIt is configured as to the second relay Q3Carry out current limliting processing；Wherein, the second relay Q3's
When moving contact disconnects, the electric energy of the power supply source VCC input is through the second positive temperature coefficient thermo-sensitive resistor RptcTo described first
Relay Q1Power supply；Or the second relay Q3Moving contact in the closure state, the electric energy of power supply source VCC input
Through the second relay Q3Moving contact to the first relay Q1Power supply.
According to the drive control circuit of the utility model embodiment, by the way that the second positive temperature coefficient thermo-sensitive resistor R is arrangedptc,
And with the second relay Q3It is in parallel, on the one hand, in the second relay Q3When closure, power supply source VCC is temperature sensitive through the second positive temperature coefficient
Resistance RptcTo the first relay Q1Power supply, on the other hand, in the second relay Q3When disconnection, power supply source VCC through second just
Temperature coefficient thermo-sensitive resistor RptcTo the first relay Q1It is powered, the second positive temperature coefficient thermo-sensitive resistor RptcIt can absorb disconnected
Electric arc or surging signal that electricity generates etc., in another aspect, flowing through the second positive temperature coefficient thermo-sensitive resistor RptcAC signal compared with
When big, the second positive temperature coefficient thermo-sensitive resistor RptcResistance value be usually exponentially increased, power supply source VCC and the first relay at this time
Q1Between be in off state, also can timely and effectively block AC signal to the first relay Q1Impact.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that further include: rectifier cell, access in
The latch-in relay Q2Between the load, the rectifier cell is configured as the exchange for exporting the network system
Electric signal AC is converted to DC signal, and the DC signal is configured as to the load supplying.
According to the drive control circuit of the utility model embodiment, by accessing rectifier cell in latch-in relay Q2
Between load, ac signal AC is converted into DC signal, so can power factor to DC signal into
Row adjustment, to adjust the running frequency and working efficiency of load.
Wherein, rectifier cell is usually bridge architecture, and each bridge arm includes a diode, the cathode of any diode
Connect with the anode with neighboring diode and the anode of any diode connects with the cathode of another neighboring diode.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that further include: capacitive element C is set to institute
It states between the output end of rectifier cell and the input terminal of the load, for filtering out between the rectifier cell and the load
AC signal.
According to the drive control circuit of the utility model embodiment, by the way that capacitive element C is set to rectifier cell and load
Input terminal between, on the one hand, capacitive element C facilitate reduce power up in impact of the ripple signal to load, another party
Face, capacitive element C are usually to have energy-storage function, therefore, when load potential difference is sufficiently large on capacitive element C, can be started
Load.
Wherein, capacitive element C can be one or more capacitors, be accessed in a manner of series connection/or parallel connection, for example, capacitive
Element C can be an electrolytic capacitor, be also possible to thin-film capacitor, but not limited to this.
According to the drive control circuit of the utility model above-described embodiment, it is preferable that the load includes following at least one
Kind: direct current generator, alternating current generator, fluorescent tube, display and buzzer.
Embodiment two:
Traditional relay control program there are aiming at the problem that, that is, when working need to continue be powered, this embodiment introduces
Latch-in relay control program, latch-in relay are a kind of mechanical relay, in short, can pass through machinery after being powered
Structure self-sustaining no longer needs to be powered, and for occasion in running order for a long time, greatly reduces energy consumption, work
Time is longer, and average energy consumption is fewer.
As shown in Figures 2 and 3, the first relay Q is set in the drive control circuit in the present embodiment1For double-pole double throw type
Relay, Q2As the on-off of the latch-in relay control AC signal in main circuit, to make latch-in relay Q2Work
Make, then latch-in relay Q2Both sides will have a low and high level, therefore control circuit also very simple, that is, construct positive negative circuit.
In addition, drive control circuit further includes traditional the second relay (single group coil) Q3, entire drive control
The course of work of circuit is described in detail below:
First relay Q1It is made of 2 moving contacts and 2 groups of normally opened contacts and normally closed stationary contact.When without electricity, 2 dynamic touchings
Head simultaneously with normally-closed contact (the first contact P1With the second contact P2) contact；When energization, 2 moving contacts move and normally opened touching simultaneously
Point (third contact P3With the 4th contact P4) contact.
Wherein, because of the first relay Q1There are 2 moving contacts, so referred to as double-pole, another because 2 moving contacts move simultaneously, institute
With referred to as double-throw.
As illustrated in fig. 2, it is assumed that the second relay Q3It is powered, the first relay Q1Without electricity, the first contact P at this time1For high electricity
It is flat, the second contact P2For low level, 2 moving contacts respectively with the first contact P1With the second contact P2It contacts, then latch-in relay
Q2Two control terminals be respectively low and high level, into working condition (being assumed to be closure), hereafter can disconnect self-sustaining relay
Device Q2, to save energy consumption, and latch-in relay Q2Working condition can also be maintained constant in lower electricity.
As shown in Figure 3, it is assumed that the second relay Q3It is powered, the first relay Q1Also it is powered, at this time third contact P3For low electricity
It is flat, the 4th contact P4Side is high level, and 2 moving contacts are because of the first relay Q1Be powered then respectively with third contact P3With the 4th touching
Point P4It contacts, at this time latch-in relay Q2Two sides be reversion level, into reversion working condition (it is above-mentioned if closure, then now
To disconnect), it hereafter can disconnect the second relay of relay Q3With the first relay Q1, further to save energy consumption.
Based on above-mentioned drive control circuit, the second relay Q need to be only controlled3With the first relay Q1So that self-sustaining relay
Device Q2Work, and work as latch-in relay Q2Into after working condition, then the second relay Q can be disconnected3With the first relay
Q1, to reduce the power consumption of drive control circuit, meanwhile, it is also beneficial to reduce circuit electric leakage, device heating bring damaged risk,
To extend the service life.
Have been described in detail above with reference to the accompanying drawings the technical solution of the utility model, it is contemplated that technology in the related technology is asked
Topic, the utility model proposes a kind of drive control circuit and household appliances, by the way that self-sustaining is arranged in drive control circuit
Relay, since latch-in relay is a kind of mechanical relay, after energization can by mechanical structure self-sustaining, without
Lasting to be powered, this greatly reduces energy consumption for occasion in running order for a long time, and the working time is longer, puts down
Equal energy consumption is fewer, meanwhile, electric leakage, device heating bring damaged risk are reduced, to extend above-mentioned drive control circuit
In each component service life.
Step in the utility model embodiment method can be sequentially adjusted, combined, and deleted according to actual needs,
Component in the utility model embodiment can be combined, divided and deleted according to actual needs.It is practical new that the above is only this
The preferred embodiment of type, is not intended to limit the utility model, for those skilled in the art, the utility model
There can be various modifications and variations.Within the spirit and principle of the utility model, made any modification, equivalent replacement,
Improve etc., it should be included within the scope of protection of this utility model.
Claims (12)
1. a kind of drive control circuit characterized by comprising
The moving contact of latch-in relay, the latch-in relay accesses in network system, at the latch-in relay
When energized state, the network system can be controlled and powered to the load；
First relay, first relay are set there are four contact, the first contact and the second contact in four contacts
For normally-closed contact, third contact and the 4th contact in four contacts are normally opened contact, first contact and described the
Four contacts are connected to power supply source, and second contact and the third contact are connected to ground wire, the dynamic touching of first relay
Head is connected to the control terminal of the latch-in relay, and first relay is configured as exporting to the latch-in relay
Pulse signal, the pulse signal be high level pulse signal or low level pulse signal,
Wherein, if the first control terminal of the latch-in relay receives the high level pulse signal, meanwhile, the self-insurance
The second control terminal for holding relay receives the low level pulse signal, then the moving contact of the latch-in relay is moved
Work switches, and the state after the upper primary movement switching is kept before receiving next pulse signal, and the movement is switched to
Disconnection is switched to by closure, or closure is switched to by disconnection.
2. drive control circuit according to claim 1, which is characterized in that further include:
Second relay, the power supply line between first relay and the power supply source, for controlling the power supply
Route closing or opening；
If second relay powers on, the power supply line between first relay and the power supply source is closed, meanwhile,
First contact and the 4th contact are high level state and second contact and the third contact is low level
State；
If electric under second relay, the power supply line between first relay and the power supply source is disconnected.
3. drive control circuit according to claim 2, which is characterized in that
First relay is double-pole double throw type relay, if it is electric under first relay, and on second relay
Electricity, then the moving contact of first relay is in contact with first contact and the second contact, meanwhile, first contact is
High level state, second contact are low level state, and the moving contact of the latch-in relay carries out movement switching.
4. drive control circuit according to claim 2, which is characterized in that
First relay is double-pole double throw type relay, if first relay powers on, and on second relay
Electricity, then the moving contact of first relay is in contact with the third contact and the 4th contact, meanwhile, the third contact is
Low level state, the 4th contact are high level state, and the moving contact of the latch-in relay carries out movement switching.
5. drive control circuit according to claim 2, which is characterized in that
First relay is double-pole double throw type relay, if it is electric under first relay, and under second relay
Electricity, then the moving contact of the latch-in relay switches without movement, and before receiving next pulse signal, described
The moving contact of latch-in relay keeps the state after last movement switching.
6. the drive control circuit according to any one of claim 2 to 5, which is characterized in that further include:
First positive temperature coefficient thermo-sensitive resistor, the first positive temperature coefficient thermo-sensitive resistor are parallel to the latch-in relay,
The first positive temperature coefficient thermo-sensitive resistor is configured as carrying out current limliting processing to the electric energy that the network system inputs,
Wherein, when the moving contact of the latch-in relay disconnects, the electric energy of the network system input is through the described first positive temperature
Degree system thermo-sensitive resistor to the load supplying,
Or the moving contact of the latch-in relay is in the closure state, the electric energy of the network system input is through the self-insurance
The moving contact of relay is held to the load supplying.
7. the drive control circuit according to any one of claim 2 to 5, which is characterized in that further include:
Second positive temperature coefficient thermo-sensitive resistor, the second positive temperature coefficient thermo-sensitive resistor are parallel to second relay, institute
The second positive temperature coefficient thermo-sensitive resistor is stated to be configured as carrying out current limliting processing to second relay；
Wherein, when the moving contact of second relay disconnects, the electric energy of the power supply source input is through the described second positive temperature system
System thermo-sensitive resistor powers to first relay；
Or the moving contact of second relay is in the closure state, the electric energy of the power supply source input is through second relay
The moving contact of device powers to first relay.
8. drive control circuit according to any one of claim 1 to 5, which is characterized in that further include:
Rectifier cell accesses between the latch-in relay and the load, and the rectifier cell is configured as will be described
The ac signal of network system output is converted to DC signal, and the DC signal is configured as supplying to the load
Electricity.
9. drive control circuit according to claim 8, which is characterized in that further include:
Capacitive element, between the output end of the rectifier cell and the input terminal of the load, for filtering out the rectification
AC signal between element and the load.
10. drive control circuit according to any one of claim 1 to 5, which is characterized in that
The load comprises at least one of the following: direct current generator, alternating current generator, fluorescent tube, display and buzzer.
11. a kind of household appliance characterized by comprising
Load；
Drive control circuit, the drive control circuit access is between the network system and the load, the driving control
Circuit processed is configured as control network system and powers to the load.
12. household appliance according to claim 11, which is characterized in that
The household appliance includes in air conditioner, refrigerator, fan, cooking apparatus, lighting apparatus, audio-visual devices and cleaning equipment
At least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920379193.4U CN209497441U (en) | 2019-03-22 | 2019-03-22 | Drive control circuit and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920379193.4U CN209497441U (en) | 2019-03-22 | 2019-03-22 | Drive control circuit and household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209497441U true CN209497441U (en) | 2019-10-15 |
Family
ID=68156971
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920379193.4U Active CN209497441U (en) | 2019-03-22 | 2019-03-22 | Drive control circuit and household appliance |
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| Country | Link |
|---|---|
| CN (1) | CN209497441U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743050A (en) * | 2019-03-22 | 2019-05-10 | 广东美的制冷设备有限公司 | Drive control circuit and household appliance |
-
2019
- 2019-03-22 CN CN201920379193.4U patent/CN209497441U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743050A (en) * | 2019-03-22 | 2019-05-10 | 广东美的制冷设备有限公司 | Drive control circuit and household appliance |
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