CN206260092U - A kind of power conditioning circuitry of many gear electric heaters - Google Patents
A kind of power conditioning circuitry of many gear electric heaters Download PDFInfo
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- CN206260092U CN206260092U CN201621185579.4U CN201621185579U CN206260092U CN 206260092 U CN206260092 U CN 206260092U CN 201621185579 U CN201621185579 U CN 201621185579U CN 206260092 U CN206260092 U CN 206260092U
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Abstract
The utility model provides a kind of power conditioning circuitry of many gear electric heaters, its circuit is made up of power circuit, zero cross detection circuit and power stepping circuit, power circuit is responsible for power supply, zero-crossing pulse is transferred to zero cross detection circuit the decade counter/pulsqe distributor of power stepping circuit, zero-crossing pulse is counted by it and pulse distribution, the output pulse of decade counter/pulsqe distributor is loaded on optocoupler by reverser, and then controls bidirectional thyristor by optocoupler.Can change the output pulse frequency of decade counter/pulsqe distributor because power regulating switch is adjusted to different gears, therefore regulation power regulating switch can be adjusted to the angle of flow of bidirectional thyristor, thus reach the purpose of the heating power of many gear control electric heaters.Due to the utility model circuit, in gear switch, heater can be always maintained at conducting state, it is not easy to cause heater failure, therefore better than the power conditioning circuitry of general many gear electric heaters.
Description
Technical field
The utility model is related to a kind of power conditioning circuitry, specifically a kind of power conditioning circuitry of many gear electric heaters,
Belong to electronic technology field.
Background technology
The household electrical appliance heated using electric heater are had a lot, such as electric heater, electric furnace, electric chafing dish, electric iron,
These household electrical appliances are generally provided with corresponding power gear on-off and a point gear regulation are carried out to the heating power of electric heater, simple at present
Being divided to gear regulative mode has two kinds, and one kind is that electric heater is divided into multistage, controls to be carried out using wherein several sections by gear on-off
Heating, it is also a kind of to be to be controlled by gear on-off the heating/dwell time ratio of electric heater, and then realize carrying out heating power
Divide gear regulation.The break-make of electric heater is switched over during due to gear shift, frequently break-make switching easily causes electric heater
Damage, therefore it is desirable that can be by a bidirectional thyristor of being connected on electric heater loop, by controlling bidirectional thyristor
The angle of flow carries out point gear to heater.The angle of flow is bigger, and the electric current that heater passes through is bigger, and heating power is bigger；The angle of flow
Smaller, the electric current that heater passes through is smaller, and heating power is also smaller.Because switching gear size is two-way by controlled loading
Come what is realized, heater can be always maintained at conducting state to the high-frequency pulse voltage of IGCT control end when gear switches, therefore not
It is susceptible to damage.
Utility model content
The purpose of this utility model is to provide a kind of power conditioning circuitry of many gear electric heaters, to solve current heater
Electric appliances will be switched over when carrying out power gear shift to the break-make of electric heater, easily cause the problem of the damage of electric heater.
Concrete technical scheme of the present utility model is：
A kind of power conditioning circuitry of many gear electric heaters, its circuit is by power circuit, zero cross detection circuit and power point
Gear circuit composition.
In the power circuit, 220V cities electrically connect the two ends of transformer T1 primary coils, the secondary wire of transformer T1
Circle is provided with three taps, centre tap ground connection, exports 9V alternating currents between upper and lower two tap and centre tap, upper tap and
Lower tap connects the positive pole of diode D1 and D2 respectively, and the negative pole of diode D1 and D2 connects the positive pole of electric capacity C1 jointly, electric capacity C1's
Negative pole is grounded, and direct current is supplied to late-class circuit from the positive pole of electric capacity C1.
In the zero cross detection circuit, the upper tap of the secondary coil of transformer T1 and lower tap meet diode D3 respectively
With the positive pole of D4,2 pin of amplifier LM358, the 3 of amplifier LM358 are accessed after the common series resistor R1 of negative pole of diode D3 and D4
Pin and 4 pin are grounded, and 8 pin connect the positive pole of electric capacity C1, and 1 pin is to power point gear circuit output.
In the power point gear circuit, 1 pin of zero cross detection circuit amplifier LM358 connects decade counter/pulse point
14 pin of Fitter C D4017 chips, 16 pin of CD4017 chips connect the positive pole of electric capacity C1, and 8 pin and 13 pin are grounded, and 15 pin connect four gears
The common port of power regulating switch S1,1,2,3,4 gear ends of 4,7,10,1 pin respectively with four gear power regulating switch S1 are connected
Connect, 2 pin and 3 pin connect the positive pole of diode D5 and D6 respectively, the negative pole of diode D5 and D6 accesses the 1 of phase inverter 74LS04 jointly
Pin；The 7 pin ground connection of phase inverter 74LS04,14 pin series resistor R2 are followed by the positive pole of electric capacity C1, and 2 pin connect 2 pin of optocoupler TCP521；
The 1 pin series resistor R3 of optocoupler TCP521 connects the positive pole of electric capacity C1, and 4 pin connect the positive pole of electric capacity C1, and 3 pin connect bidirectional thyristor VS's
One end of control pole and resistance R4, the other end ground connection of resistance R4；The first anode of bidirectional thyristor VS meets the N of 220V civil powers
Line, second plate concatenation electric heater EH is followed by the L lines of 220V civil powers.
The diode D1-D6 uses 1N4007, bidirectional thyristor VS to use according to the power of electric heater EH to select,
Electric capacity C1 uses 470 μ F/25V electrochemical capacitors, resistance R1 to use 10k Ω resistance.
The power conditioning circuitry of many gear electric heaters of the present utility model is by power circuit, zero cross detection circuit and power point
Gear circuit composition, power circuit is responsible for power supply, and zero-crossing pulse is transferred to zero cross detection circuit the decimal system of power point gear circuit
Counter/pulsqe distributor, is counted and pulse distribution by it to zero-crossing pulse, decade counter/pulsqe distributor
Output pulse is loaded on optocoupler by reverser, and then controls bidirectional thyristor by optocoupler.Because power regulating switch is adjusted
The output pulse frequency of decade counter/pulsqe distributor can be changed to different gears, therefore regulation power adjusting is opened
Pass can be adjusted to the angle of flow of bidirectional thyristor, thus reach the purpose of the heating power of many shift control electric heaters.By
In the utility model circuit, when gear switches, heater can be always maintained at conducting state, it is not easy to cause heater failure, because
This is better than the power conditioning circuitry of general many gear electric heaters.
Brief description of the drawings
Fig. 1 is the circuit diagram of the temperature control circuit of many gear electric heaters of the utility model.
Specific embodiment
The utility model is described further below in conjunction with the accompanying drawings.
As shown in figure 1, the power conditioning circuitry of many gear electric heaters of the present utility model is by power circuit, zero passage detection electricity
Road and power point gear circuit composition.
In the power circuit, 220V cities electrically connect the two ends of transformer T1 primary coils, the secondary wire of transformer T1
Circle is provided with three taps, centre tap ground connection, exports 9V alternating currents between upper and lower two tap and centre tap, upper tap and
Lower tap connects the positive pole of diode D1 and D2 respectively, and the negative pole of diode D1 and D2 connects the positive pole of electric capacity C1 jointly, electric capacity C1's
Negative pole is grounded, and direct current is supplied to late-class circuit from the positive pole of electric capacity C1.
In the zero cross detection circuit, the upper tap of the secondary coil of transformer T1 and lower tap meet diode D3 respectively
With the positive pole of D4,2 pin of amplifier LM358, the 3 of amplifier LM358 are accessed after the common series resistor R1 of negative pole of diode D3 and D4
Pin and 4 pin are grounded, and 8 pin connect the positive pole of electric capacity C1, and 1 pin is to power point gear circuit output.
In the power point gear circuit, 1 pin of zero cross detection circuit amplifier LM358 connects decade counter/pulse point
14 pin of Fitter C D4017 chips, 16 pin of CD4017 chips connect the positive pole of electric capacity C1, and 8 pin and 13 pin are grounded, and 15 pin connect four gears
The common port of power regulating switch S1,1,2,3,4 gear ends of 4,7,10,1 pin respectively with four gear power regulating switch S1 are connected
Connect, 2 pin and 3 pin connect the positive pole of diode D5 and D6 respectively, the negative pole of diode D5 and D6 accesses the 1 of phase inverter 74LS04 jointly
Pin；The 7 pin ground connection of phase inverter 74LS04,14 pin series resistor R2 are followed by the positive pole of electric capacity C1, and 2 pin connect 2 pin of optocoupler TCP521；
The 1 pin series resistor R3 of optocoupler TCP521 connects the positive pole of electric capacity C1, and 4 pin connect the positive pole of electric capacity C1, and 3 pin connect bidirectional thyristor VS's
One end of control pole and resistance R4, the other end ground connection of resistance R4；The first anode of bidirectional thyristor VS meets the N of 220V civil powers
Line, second plate concatenation electric heater EH is followed by the L lines of 220V civil powers.
When this circuit works, 220V civil powers are depressured through transformer T1, and diode D1, D2 full-wave rectification and electric capacity C1 are filtered
Afterwards, the DC voltage for forming about 9V is exported to rear class.The pulsating dc voltage produced after diode D3, D4 rectification adds through resistance R1
The 2 pin inverting inputs of amplifier LM358 are loaded onto, when alternating current zero passage, pulsating dc voltage also zero passage, 1 pin of amplifier LM358
Output end can export zero-crossing pulse and be loaded onto 14 pin of CD4017 chips, and CD4017 chips are counted and arteries and veins to zero-crossing pulse
After punching distribution, from its 2 pin and 3 pin output high level pulse, low level is formed after the inverted device 74LS04 of high level pulse is anti-phase
Pulse, and then optocoupler TCP521 conductings are triggered, the high trigger pulses exported by 3 pin of optocoupler TCP521 control two-way brilliant lock
The angle of flow of pipe VS realizes the control to electric heater EH power.
Power regulating switch S1 is kept off by regulation four, gear regulation can be carried out to the heating power of electric heater EH.When four
When gear power regulating switch S1 is placed in 1 gear, 1 pin of amplifier LM358 often exports 1 zero-crossing pulse, 2 pin of CD4017 chips or 3
Pin will produce 1 high level pulse, and now the ducting capacity of bidirectional thyristor VS is most strong, electric heater EH full power operations；When
Four gear power regulating switch S1 are when being placed in 3 gear, and 1 pin of amplifier LM358 often exports 4 zero-crossing pulses, 2 pin of CD4017 chips or
3 pin can just produce 2 high level pulses, and now the ducting capacity of bidirectional thyristor VS only has 50%, electric heater EH half-power works
Make.
Above-mentioned legend is only exemplary embodiments of the present utility model, is not limited to the utility model, all in this practicality
Any modification made within new spirit and principle or equivalent and improvement etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (2)
1. a kind of power conditioning circuitry of many gear electric heaters, it is characterized in that：The power conditioning circuitry is by power circuit, zero passage
Detection circuit and power point gear circuit composition；
In the power circuit, 220V cities electrically connect the two ends of transformer T1 primary coils, and the secondary coil of transformer T1 sets
There are three taps, centre tap ground connection exports 9V alternating currents between upper and lower two tap and centre tap, upper tap is taken out with
Head connects the positive pole of diode D1 and D2 respectively, and the negative pole of diode D1 and D2 connects the positive pole of electric capacity C1, the negative pole of electric capacity C1 jointly
Ground connection, direct current is supplied from the positive pole of electric capacity C1 to late-class circuit；
In the zero cross detection circuit, the upper tap of the secondary coil of transformer T1 and lower tap meet diode D3 and D4 respectively
Positive pole, 2 pin of amplifier LM358,3 pin of amplifier LM358 and 4 are accessed after the common series resistor R1 of negative pole of diode D3 and D4
Pin is grounded, and 8 pin connect the positive pole of electric capacity C1, and 1 pin is to power point gear circuit output；
In the power point gear circuit, 1 pin of zero cross detection circuit amplifier LM358 connects decade counter/pulsqe distributor
14 pin of CD4017 chips, 16 pin of CD4017 chips connect the positive pole of electric capacity C1, and 8 pin and 13 pin are grounded, and 15 pin connect four gear power
The common port of regulation switch S1,1,2,3,4 gear ends of 4,7,10,1 pin respectively with four gear power regulating switch S1 are connected, and 2
Pin and 3 pin connect the positive pole of diode D5 and D6 respectively, and the negative pole of diode D5 and D6 accesses 1 pin of phase inverter 74LS04 jointly；
The 7 pin ground connection of phase inverter 74LS04,14 pin series resistor R2 are followed by the positive pole of electric capacity C1, and 2 pin connect 2 pin of optocoupler TCP521；Light
The 1 pin series resistor R3 of coupling TCP521 connects the positive pole of electric capacity C1, and 4 pin connect the positive pole of electric capacity C1, and 3 pin connect the control of bidirectional thyristor VS
Pole processed and one end of resistance R4, the other end ground connection of resistance R4；The first anode of bidirectional thyristor VS connects the N lines of 220V civil powers,
Second plate concatenation electric heater EH is followed by the L lines of 220V civil powers.
2. the power conditioning circuitry of many gear electric heaters according to claim 1, it is characterized in that：The diode D1-D6
1N4007, bidirectional thyristor VS is used to use according to the power of electric heater EH to select, electric capacity C1 is electrolysed using 470 μ F/25V
Electric capacity, resistance R1 uses 10k Ω resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621185579.4U CN206260092U (en) | 2016-11-04 | 2016-11-04 | A kind of power conditioning circuitry of many gear electric heaters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621185579.4U CN206260092U (en) | 2016-11-04 | 2016-11-04 | A kind of power conditioning circuitry of many gear electric heaters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206260092U true CN206260092U (en) | 2017-06-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621185579.4U Expired - Fee Related CN206260092U (en) | 2016-11-04 | 2016-11-04 | A kind of power conditioning circuitry of many gear electric heaters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206260092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559923A (en) * | 2016-11-04 | 2017-04-05 | 广西大学 | A kind of power conditioning circuitry of many gear electric heaters |
| CN107294408A (en) * | 2017-07-24 | 2017-10-24 | 重庆赛能软件技术有限公司 | Power of controlled silicon modulator |
-
2016
- 2016-11-04 CN CN201621185579.4U patent/CN206260092U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559923A (en) * | 2016-11-04 | 2017-04-05 | 广西大学 | A kind of power conditioning circuitry of many gear electric heaters |
| CN107294408A (en) * | 2017-07-24 | 2017-10-24 | 重庆赛能软件技术有限公司 | Power of controlled silicon modulator |
| CN107294408B (en) * | 2017-07-24 | 2019-04-05 | 重庆赛能软件技术有限公司 | Power of controlled silicon modulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170616 Termination date: 20191104 |