CN208832754U - A kind of control circuit of electric water heater - Google Patents
A kind of control circuit of electric water heater Download PDFInfo
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- CN208832754U CN208832754U CN201821422823.3U CN201821422823U CN208832754U CN 208832754 U CN208832754 U CN 208832754U CN 201821422823 U CN201821422823 U CN 201821422823U CN 208832754 U CN208832754 U CN 208832754U
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Abstract
The utility model provides a kind of control circuit of electric water heater; including rectification module, temperature protector and electric heating tube, rectification module input terminal connects AC power source, after rectification module output end serial temperature protector; it is connected to electric heating tube, with DC power supply needed for providing work for electric heating tube.Electric heating tube power supply is supplied electricity to by the way that the rectified module of AC power source is converted into direct current, break off alternating current with this and reveals the current loop formed over the ground, it will not be formed even if electric heating tube aging causes electricity to leak to people's electric shock accidents, and due to without to earth-return, alternating current source only needs L and N line to power, ground wire terminals can be save, some installation environments not being grounded also can be used, therefore extend the use environment of electric heater.
Description
Technical field
Utility model is related to electric heater control field more particularly to a kind of control circuit of electric water heater.
Background technique
Existing electric heater be all by alternating current directly to electric heater heating tube power, when occur water heater by
Cause heating tube aging to be easy to appear electric leakage accident to bring casualties in being used for a long time, and when the external alternating current of electric heater
It also needs to be grounded, if the wiring to some houses also brings along safety problem when using electric heater without ground wire.
Above content is only used for the technical solution that auxiliary understands utility model, does not represent and recognizes that above content is existing skill
Art.
Utility model content
The main purpose of the utility model is to provide a kind of control circuit of electric water heater, it is intended to solve due to existing electricity
If the problem of water heater electric heating tube aging brings electric leakage to lead to casualties.
To achieve the above object, a kind of control circuit of electric water heater that utility model provides, the control circuit of electric water heater
Including rectification module, temperature protector and electric heating tube, rectification module input terminal connects AC power source, rectification module output end string
After joining temperature protector, it is connected to electric heating tube, with DC power supply needed for providing work for electric heating tube.
Optionally, which further includes and the concatenated temperature controller of electric heating tube.
Optionally, which further includes MCU, drive module and temperature detecting module；
The output end of drive module is connected with electric heating tube, and the control terminal of drive module connects MCU；
Temperature detecting module output end connects MCU, to detect the water temperature inside electric heater；
MCU controls drive module according to water temperature to drive being turned on or off for electric heating tube.
Optionally, which further includes voltage regulating module, and voltage regulating module is connected on to be inputted with rectification module
On the ac circuit for holding connection, to adjust the alternating voltage for being input to rectification module.
Optionally, the control terminal of the voltage regulating module connects MCU, and control circuit of electric water heater further includes zero crossing detection module；
Zero crossing detection module is used to detect the zero cross signal of alternating voltage, and MCU controls voltage regulating module work according to zero cross signal
Make, to adjust the alternating voltage for being input to rectification module.
Optionally, which includes the 16th resistance, adjustable potentiometer, the 15th resistance, bilateral diode, the 5th
Capacitor and the first bidirectional triode thyristor；
One end of 5th capacitor and the first anode of the first bidirectional triode thyristor are connected to one end of voltage regulating module, the 5th capacitor altogether
The other end connect altogether in one end of the 15th resistance and one end of adjustable potentiometer；
The other end of adjustable potentiometer connects one end of the 16th resistance, the other end of the 16th resistance and first it is two-way can
The second plate of control silicon is connected to the other end of voltage regulating module altogether；
One end of the other end connection bilateral diode of 15th resistance, the other end connection first of bilateral diode are two-way
Silicon-controlled control electrode.
Optionally, the voltage regulating module include the 8th resistance, the second optocoupler, the 7th resistance, the 9th resistance and second it is two-way can
Control silicon；
The first anode of second bidirectional triode thyristor is one end of voltage regulating module, the second plate of the second bidirectional triode thyristor and the
One end of nine resistance is connected to the other end of voltage regulating module altogether, and the control electrode of the second bidirectional triode thyristor connects two-way the two of the second optocoupler
One end of pole pipe；
The other end of the bilateral diode of second optocoupler connects one end of the 8th resistance, the other end connection of the 8th resistance the
The other end of nine resistance；
The anode of the minus earth of the light emitting diode of second optocoupler, the light emitting diode of the second optocoupler connects the 7th resistance
One end, the other end of the 7th resistance is the control terminal of voltage regulating module, and control terminal connects MCU.
Optionally, which is in parallel two, and drive module includes the first drive module and the second drive module.
The control circuit of electric water heater of the utility model, including rectification module, temperature protector and electric heating tube rectify mould
Block input terminal connects AC power source, after rectification module output end serial temperature protector, electric heating tube is connected to, for electric heating
DC power supply needed for pipe provides work.Electric heating tube power supply is supplied electricity to by the way that the rectified module of AC power source is converted into direct current,
Alternating current is broken off with this and has revealed the current loop formed over the ground, will not have been formed even if electric heating tube aging causes electricity to leak
To people's electric shock accidents, and since without to earth-return, alternating current source only needs L and N line to power, and can save ground
Line terminals also can be used some installation environments not being grounded, therefore extend the use environment of electric heater.
Detailed description of the invention
Fig. 1 is the electrical block diagram of the utility model control circuit of electric water heater first embodiment；
Fig. 2 is further improved electrical block diagram on the basis of Fig. 1；
Fig. 3 is further improved electrical block diagram on the basis of Fig. 1；
Fig. 4 is the electrical block diagram of the utility model control circuit of electric water heater second embodiment；
Fig. 5 is further improved electrical block diagram on the basis of Fig. 4；
Fig. 6 is further improved electrical block diagram on the basis of Fig. 4；
Fig. 7 is the electrical block diagram of the utility model control circuit of electric water heater 3rd embodiment；
Fig. 8 is the zero cross signal waveform diagram of zero crossing detection module output in Fig. 7；
Fig. 9 is a control signal waveform schematic diagram of the utility model control method of electric water heater embodiment；
Figure 10 is another control signal waveform schematic diagram of the utility model control method of electric water heater embodiment；
Figure 11 is another control signal waveform schematic diagram of the utility model control method of electric water heater embodiment.
Specific embodiment
The embodiment of utility model is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning extremely
Same or similar label indicates same or similar element or element with the same or similar functions eventually.Below with reference to
The embodiment of attached drawing description is exemplary, it is intended to for explaining utility model, and should not be understood as the limitation to utility model.
The utility model embodiment proposes a kind of control circuit of electric water heater, and the control circuit of electric water heater is for realizing right
The electric heating tube of electric heater controls, and realizes and heats to water.In the first embodiment of the control circuit of the electric heater, such as scheme
Shown in 1, which includes rectification module 1, temperature protector RT and electric heating tube L1, and rectification module 1 inputs
It holds and connects AC power source, after 1 output end serial temperature protector RT of rectification module, electric heating tube L1 is connected to, for electric heating
DC power supply needed for pipe L1 provides work, the direct current power source voltage are Rectified alternating current.Control circuit of electric water heater below
Abbreviation control circuit.
Above-mentioned temperature protector RT provides temperature protection for the electric heating tube L1 of electric heater, places electric heating tube L1 different
Cause its temperature excessively high when often heating such as anhydrous heating and protect, prevents electric heating tube L1 from damaging.
Further, in the control circuit, can also include with the concatenated mechanical temperature switch TH of electric heating tube L1,
Electric heater internal hot-water temperature can be set by adjusting temperature switch TH, disconnect, realize automatically when temperature reaches setting value
The purpose of electric heater setting hot water temperature.
In this embodiment, electric heating tube power supply is supplied electricity to by the way that the rectified module of AC power source is converted into direct current, with this
Break off alternating current and reveals the current loop formed over the ground, it, at this moment will be in the power supply interface connection of electric heating tube through overtesting
State after DC power supply exposed entire placement in water, so that exposed power supply interface is contacted with water, employment at this time when electrified regulation
Hand touch will not cause to get an electric shock, and if it is the both ends with alternating current directly to electric heating tube, it can be right if when people touches
Ground, which is formed into a loop, to be formed heavy current and causes to get an electric shock.Therefore by above-mentioned control circuit, even if when electric heating tube aging causes outside electricity
Letting out will not form to people's electric shock accidents, and since without to earth-return, alternating current source only needs the power supply of L and N line i.e.
Can, ground wire terminals can be save, some installation environments not being grounded also can be used, therefore extend electric heater
Use environment.
Based on the control circuit of above-mentioned Fig. 1, other function circuit can also be increased, increase display module 3 as shown in Figure 2,
Direct current is exported by Switching Power Supply 2 to power to it, can show the status information road temperature of electric heater, power supply instruction,
Protection and police instruction etc..
Further, the another embodiment as the control circuit embodiment, as shown in figure 3, the control circuit is also
Including MCU4, drive module 5 and temperature detecting module 7；
The output end of drive module 5 is connected with electric heating tube L1, and the control terminal of drive module 5 connects MCU4；
7 output end of temperature detecting module connects MCU4, to detect the water temperature inside electric heater；
MCU4 controls drive module 5 according to water temperature to drive being turned on or off for electric heating tube L1.
In this embodiment, MCU4 i.e. relevant control partial circuit is increased, temperature detecting module 7 is obtained by MCU4
It detects electric heater internal hot-water temperature, and obtains hot water temperature's value set by user, drive electricity to add to control drive module 5
Heat pipe L1's is turned on or off, and reaches set temperature to realize.Display module 3 can also be increased simultaneously, show current electric hot water
The status information such as present real-time temperature, timing information etc. of device work.
Specifically, drive module 5 is mainly made of triode Q1, relay RY1 and resistance R1 etc., wherein triode Q1
Base stage connects a control pin of MCU5, the emitter ground connection of triode Q1, the collector connection relay RY1 of triode Q1
Coil one end, another termination DC power anode of the coil of relay RY1, relay RY1 switch series connection with electricity plus
Heat pipe L1 series connection；When MCU5 exports the high level of control signal, triode Q1 conducting, the coil and direct current of relay RY1
Power supply is connected, and is closed the switch, and direct current powers to heat water to electric heating tube L1 at this time.
Further, in this embodiment, for the electric heater of double heating pipes type, it can correspond to be further added by and drive all the way
Circuit, it is corresponding to control another electric heating tube L2 work as increased drive module 6 in Fig. 3.The physical circuit of the drive module 6 is same
Drive module 5, details are not described herein.
By the way that double electric heating tube is arranged, the control of multiple power gear such as 1000W/2000W may be implemented, better meet
User demand.
Further, the first embodiment based on the utility model control circuit of electric water heater, in the utility model electric heating
In the second embodiment of hydrophone control circuit, as shown in figure 4, the control circuit of electric water heater further includes voltage regulating module 8, pressure regulation mould
Block 8 is connected on the ac circuit connecting with rectification module input terminal, to adjust the alternating voltage for being input to rectification module 1.
The first embodiment of relation control circuit, the present embodiment increase series connection between alternating current input power supplying and rectification module
Voltage regulating module 8, with this realize the adjusting to the alternating voltage for being input to rectification module 1 control, and then realize rectification module 1 it is defeated
Direct current out changes correspondingly, so that the consumption in operation power of electric heating tube L1 sends variation, realizes to electric heater
Power adjustable.
Specifically, the voltage regulating module includes the 16th resistance R16, adjustable potentiometer RP, the 15th resistance R15, two-way two
Pole pipe D5, the 5th capacitor C5 and the first bidirectional triode thyristor TR1；
The first anode A1 of one end of 5th capacitor C5 and the first bidirectional triode thyristor TR1 are connected to one end of voltage regulating module altogether
The other end of T2, the 5th capacitor C5 connect altogether in one end of the 15th resistance R15 and one end of adjustable potentiometer RP；
The other end of adjustable potentiometer RP connects one end of the 16th resistance R16, the other end of the 16th resistance R16 and the
The second plate A2 of one bidirectional triode thyristor TR1 is connected to the other end T1 of voltage regulating module altogether；
One end of the other end connection bilateral diode D5 of 15th resistance R15, the other end connection of bilateral diode D5
The control electrode G of first bidirectional triode thyristor TR1.
8 working principle of voltage regulating module is, through the 15th R15 pairs of resistance after the 16th resistance R16 and adjustable potentiometer RP
The conducting voltage of the power supplying from one direction of bilateral diode D5, bilateral diode D5 is certain, when its supply voltage is more than conducting voltage,
Bilateral diode D5 conducting, the control electrode G on-load voltage of the first bidirectional triode thyristor TR1 turns it at this time, and alternating voltage is through the
One input terminal of the first anode A1 and second plate A2 of one bidirectional triode thyristor TR1 to rectification module 1 forms access, so that rectification
Module 1 works normally.The conducting voltage of above-mentioned bilateral diode D5 depends on the resistance sizes of adjustable potentiometer RP, due to passing through
Adjustable potentiometer RP is that variable alternating voltage just changes alternating voltage and exist by adjusting adjustable potentiometer RP
Different voltages point just triggers bilateral diode D5 conducting so that the first bidirectional triode thyristor TR1 is connected, namely changes first
The angle of flow in the exchange half period (being 10ms for 50Hz alternating current) in alternating voltage of bidirectional triode thyristor TR1, that is, realize
It just exports on alternating current to rectification module 1, and then realizes to load in rectification mould from different moments in each half period
The virtual value of alternating voltage on block 1 must be adjusted, and then finally realize the voltage value of the DC voltage exported to rectification module 1
It must adjust, it is achieved that entire power of electric water heater is adjustable.
By increasing the voltage regulating module 8, cooperates rectification module 1, realizing originally to electric heating tube L1 direct current safe power supply
In the case of, the adjustable of the electric heating tube operating power is furthermore achieved, meets user to the multi gear power demand of electric heater.
Further, in another real-time mode of the embodiment, as shown in figure 5, such as the first embodiment of control circuit,
Display module 3 can also be increased, direct current is exported by Switching Power Supply 2 and is powered to it, can show the state letter of electric heater
Cease road temperature, power supply instruction, protection and police instruction etc..
Further, in another real-time mode of the embodiment, as shown in fig. 6, such as the first embodiment of control circuit,
The additional control circuit that MCU4, drive module 5 and temperature detecting module 7 form, particular circuit configurations and work can also be increased
Principle is with the circuit in first embodiment, and details are not described herein.
Further, the second embodiment based on the utility model control circuit of electric water heater, in the utility model electric heating
In the 3rd embodiment of hydrophone control circuit, as shown in fig. 7, the control terminal CTRL connection MCU4 of voltage regulating module 9, electric heater control
Circuit processed further includes zero crossing detection module 10；
Zero crossing detection module 10 is used to detect the zero cross signal of alternating voltage, and MCU4 controls voltage regulating module according to zero cross signal
10 work, to adjust the alternating voltage for being input to rectification module 1.
The second embodiment of relation control circuit, in embodiment, voltage regulating module 9 are changed to another voltage regulating module electricity
In addition road, adjusting can be increased zero cross detection circuit by the control of MCU4, so that MCU4 is exported according to the zero cross signal of alternating current
Signal is controlled to control voltage regulating module 9, realizes adjusting to alternating voltage for MCU4.
Specifically, zero crossing detection module 10 is mainly by the tenth resistance R10, eleventh resistor R11, optocoupler IC1, the 12nd electricity
R12, thirteenth resistor R13 and third transistor Q3 composition are hindered, alternating voltage passes through eleventh resistor R11 and twelfth resistor
It is input to optocoupler IC1 after R12 partial pressure, exports zero cross signal in its outlet side, and through thirteenth resistor R13, twelfth resistor R12
Shaping, in the zero cross signal of third transistor Q3 collector outputting standard, zero cross signal waveform is as shown in Figure 8.
Specifically, voltage regulating module 9 includes the 8th resistance R8, the second optocoupler IC2, the 7th resistance R7, the 9th resistance R9 and the
Two bidirectional triode thyristor TR2；
The first anode A1 of second bidirectional triode thyristor TR2 is one end T3 of voltage regulating module 9, the second bidirectional triode thyristor TR2's
One end of second plate A2 and the 9th resistance R9 are connected to the other end T4 of voltage regulating module 9, the control of the second bidirectional triode thyristor TR2 altogether
One end of the bilateral diode of pole G the second optocoupler of connection IC2；
The other end of the bilateral diode of second optocoupler IC2 connects one end of the 8th resistance R8, and the 8th resistance R8's is another
The other end of the 9th resistance R9 of end connection；
The minus earth of the light emitting diode of second optocoupler IC2, the anode connection the of the light emitting diode of the second optocoupler IC2
One end of seven resistance R7, the other end of the 7th resistance R7 are the control terminal CTRL, control terminal CTRL connection MCU4 of voltage regulating module 9
One control pin.
In this embodiment, MCU4 is based on alternating current zero crossing moment point, in the preset time of the exchange half period of alternating voltage
Point output pulse signal arrive the voltage regulating module 9 control terminal so that the second optocoupler IC2 be connected so that second it is two-way controllably
The control electrode G on-load voltage of silicon TR2, so that the second bidirectional triode thyristor TR2 is connected, alternating voltage is through the second bidirectional triode thyristor TR2
First anode A1 and second plate A2 to rectification module 1 an input terminal formed access so that rectification module 1 work normally.
MCU4 is realized by adjusting the time value of the opposite zero-acrross ing moment point of above-mentioned preset time point and is triggered second pair in different moments
It is connected to silicon-controlled TR2, the exchange half period in alternating voltage for changing the second bidirectional triode thyristor TR2 is also realized with this
The angle of flow in (being 10ms for 50Hz alternating current), finally realizes the voltage value of the DC voltage exported to rectification module 1
It must adjust, it is achieved that entire power of electric water heater is adjustable.
Opposite second embodiment manually adjusts power by potentiometer, and the MCU4 of the present embodiment can more accurate careful tune
Whole power.
The utility model embodiment also proposes a kind of control method of electric water heater, this reality based on above-mentioned 3rd embodiment
With the control circuit of electric water heater, which includes:
Obtain the setting power of electric heater；
First or two zero cross signals crossed in null cycle based on alternating voltage are determined according to the size of setting power
Output control signal control voltage regulating module 9 work, with adjust be input to rectification module 1 ac voltage be and setting power pair
The virtual value answered.
The voltage Principles of Regulation of the control circuit of the utility model electric heater based on 3rd embodiment are it is found that MCU4 is
Based on zero-acrross ing moment rise preset time point output pulse signal to the voltage regulating module 9 control terminal so that this second it is two-way can
Silicon TR2 conducting is controlled, in a complete ac cycle, there are two zero cross signals, as shown in figure 9, in the first ac cycle
Inside there are zero cross signal P1 and P2 respectively, P3 is first zero cross signal of next ac cycle.If MCU4 is directed to each mistake
Zero-signal all exports control signal, namely each alternating voltage exchange half period output control signal make it is second two-way
Silicon-controlled TR2 conducting, can obtain in this way (be with 220V/50Hz from close to the smallest virtual value no-voltage to maximum 220V
Example), when the alternating voltage exported through the voltage regulating module 9 is bigger than normal is more than its half, that is, 110V, as shown in figure 9, in its control letter
Number closer apart from each zero cross signal P1 and P2, the moment of triggering and conducting the alternating voltage instantaneous value correspond to it is less than normal, such as
The instantaneous value of C1, C3 point moment in figure is connected moment in the second bidirectional triode thyristor TR2 at this time, loads on electric heating tube L1
DC voltage it is also not high therefore instantaneously relatively little by the electric current of its electric heating tube L1；But if adjusting is needed to obtain
Alternating voltage is less than normal when being less than 110V, as shown in Figure 10, control signal apart from each zero cross signal P1 and P2 farther out, and
Alternating voltage peak point moment has been crossed, moment has been connected in the second bidirectional triode thyristor TR2 at this time, alternating voltage instantaneous value is inclined
Height, or even close to peak value, such as C5 the and C6 moment corresponding instantaneous value in Figure 10, the pulsation loaded on electric heating tube L1 at this time is straight
Galvanic electricity pressure also can be higher or even close to its voltage peak, so that the electric current by its electric heating tube L1 is also very high, simultaneously
Also cause the alternating current instantaneous value of ac input end very high, which brings impact, while also bringing punching to power grid
Hitting leads to EMI (electromagnetic disturbance) problem.
It is less than normal in the power that electric heater needs to avoid the above problem, so that the alternating voltage of its voltage regulating module 9 output
When virtual value is less than 110V, pressure regulation can be controlled using just for the first zero cross signal output control signal in ac cycle
Module work.As shown in figure 11, control is exported just for first zero cross signal P1 in figure in an ac cycle at this time
Signal, the second zero cross signal P2 do not export control signal, because of second half period not output voltage, then whole cycle output
Voltage reduced half, thus, can at the time of close to first zero cross signal P1 output control signal can guarantee it is entire
The alternating voltage virtual value of period output is less than 110V.Due to close to first zero cross signal P1, alternating voltage instantaneous value at this time
It is low, thus the DC voltage loaded on its electric heating tube L1 is not also high, therefore instantaneously opposite by the electric current of its electric heating tube L1
Less, current loop is impacted less, will not occurs impacting power grid big caused EMI problem.
So if the setting power of electric heater is less than normal, specific one for setting power and being lower than the first electric heater total power
When half, at this point for voltage regulating module output alternating voltage also below the half of maximum virtual value, at this time can be based on described
The first zero cross signal output control signal control voltage regulating module work of alternating voltage crossed in null cycle；And electric heater is set
Determine that power is bigger than normal, it is specific when setting power and being higher than the half of the first electric heater total power, at this point for voltage regulating module export
Alternating voltage also above maximum virtual value half, at this time can based on the alternating voltage cross null cycle in two mistakes
Zero-signal all exports control signal control voltage regulating module work.Make to control the second bidirectional triode thyristor TR2 in control signal with this
Moment is connected, alternating voltage instantaneous value is not high, and the electric current of formation is also corresponding little, will not beat internal circuit and extraneous power grid
Bring impact.Improve the reliability of the control circuit work of entire electric heater.
In the description of this specification, the description meaning of reference term " first embodiment ", " second embodiment ", " example " etc.
Refer to that specific method, device or feature described in conjunction with this embodiment or example are contained at least one embodiment of utility model
Or in example.In the present specification, the schematic representation of the above terms does not necessarily have to refer to the same embodiment or example.
Moreover, specific features, method, apparatus or the feature of description can be in any one or more of the embodiments or examples with suitable
Mode combines.In addition, without conflicting with each other, those skilled in the art can be by difference described in this specification
The feature of embodiment or example and different embodiments or examples is combined.
The above is only the preferred embodiments of utility model, are not intended to limit the scope of the patents of utility model, all utilizations
Equivalent structure or equivalent flow shift made by utility model specification and accompanying drawing content is applied directly or indirectly in other phases
The technical field of pass similarly includes in the scope of patent protection of utility model.
Claims (8)
1. a kind of control circuit of electric water heater, which is characterized in that the control circuit of electric water heater includes rectification module, temperature guarantor
Device and electric heating tube are protected, the rectification module input terminal connects AC power source, the rectification module output end series connection temperature
Protector is simultaneously connected to the electric heating tube, with DC power supply needed for providing work for the electric heating tube.
2. control circuit of electric water heater as described in claim 1, which is characterized in that the control circuit of electric water heater further includes
With the concatenated temperature controller of the electric heating tube.
3. control circuit of electric water heater as described in claim 1, which is characterized in that the control circuit of electric water heater further includes
MCU, drive module and temperature detecting module；
The output end of the drive module is connected with the electric heating tube, and the control terminal of the drive module connects the MCU；
The temperature detecting module output end connects the MCU, to detect the water temperature inside the electric heater；
The MCU controls drive module according to the water temperature to drive being turned on or off for the electric heating tube.
4. control circuit of electric water heater as claimed in claim 3, which is characterized in that the control circuit of electric water heater further includes
Voltage regulating module, the voltage regulating module are connected on the ac circuit connecting with the rectification module input terminal, are input to adjusting
The alternating voltage of the rectification module.
5. control circuit of electric water heater as claimed in claim 4, which is characterized in that the control terminal of the voltage regulating module connects institute
MCU is stated, the control circuit of electric water heater further includes zero crossing detection module；
The zero crossing detection module is used to detect the zero cross signal of the alternating voltage, and the MCU is according to the zero cross signal control
The voltage regulating module work is made, to adjust the alternating voltage for being input to the rectification module.
6. control circuit of electric water heater as claimed in claim 4, which is characterized in that the voltage regulating module includes the 16th electricity
Resistance, adjustable potentiometer, the 15th resistance, bilateral diode, the 5th capacitor and the first bidirectional triode thyristor；
One end of 5th capacitor and the first anode of first bidirectional triode thyristor are connected to one end of the voltage regulating module altogether,
The other end of 5th capacitor connects altogether in one end of the 15th resistance and one end of the adjustable potentiometer；
The other end of the adjustable potentiometer connects one end of the 16th resistance, the other end of the 16th resistance and institute
The second plate for stating the first bidirectional triode thyristor is connected to the other end of the voltage regulating module altogether；
The other end of 15th resistance connects one end of the bilateral diode, the other end connection of the bilateral diode
The control electrode of first bidirectional triode thyristor.
7. control circuit of electric water heater as claimed in claim 5, which is characterized in that the voltage regulating module include the 8th resistance,
Second optocoupler, the 7th resistance, the 9th resistance and the second bidirectional triode thyristor；
The first anode of second bidirectional triode thyristor be the voltage regulating module one end, the second of second bidirectional triode thyristor
One end of anode and the 9th resistance is connected to the other end of the voltage regulating module, the control electrode of second bidirectional triode thyristor altogether
Connect one end of the bilateral diode of second optocoupler；
The other end of the bilateral diode of second optocoupler connects one end of the 8th resistance, the 8th resistance it is another
End connects the other end of the 9th resistance；
The minus earth of the light emitting diode of second optocoupler, the light emitting diode of second optocoupler anode connection described in
One end of 7th resistance, the other end of the 7th resistance are the control terminal of the voltage regulating module, described in the control terminal connection
MCU。
8. control circuit of electric water heater as claimed in claim 3, which is characterized in that the electric heating tube is two of parallel connection,
The drive module includes the first drive module and the second drive module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821422823.3U CN208832754U (en) | 2018-08-31 | 2018-08-31 | A kind of control circuit of electric water heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821422823.3U CN208832754U (en) | 2018-08-31 | 2018-08-31 | A kind of control circuit of electric water heater |
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| CN208832754U true CN208832754U (en) | 2019-05-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109002003A (en) * | 2018-08-31 | 2018-12-14 | 佛山市法力奇电器科技有限公司 | A kind of control circuit of electric water heater and control method |
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2018
- 2018-08-31 CN CN201821422823.3U patent/CN208832754U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109002003A (en) * | 2018-08-31 | 2018-12-14 | 佛山市法力奇电器科技有限公司 | A kind of control circuit of electric water heater and control method |
| CN109002003B (en) * | 2018-08-31 | 2022-02-08 | 佛山市法力奇电器科技有限公司 | Control circuit and control method of electric water heater |
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Effective date of registration: 20210225 Address after: 528000 1st floor, No.8 Huafu Road, Bianjiao community, Ronggui street, Shunde District, Foshan City, Guangdong Province Patentee after: Foshan tunneng Electric Appliance Co.,Ltd. Address before: 528308 1st floor, No.8 Huafu Road, Ronggui Bianjiao neighborhood committee, Shunde District, Foshan City, Guangdong Province Patentee before: FOSHAN FALIQI ELECTRIC APPLIANCE TECHNOLOGY Co.,Ltd. |
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