CN218941070U - Heater operating circuit - Google Patents
Heater operating circuit Download PDFInfo
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- CN218941070U CN218941070U CN202222888288.3U CN202222888288U CN218941070U CN 218941070 U CN218941070 U CN 218941070U CN 202222888288 U CN202222888288 U CN 202222888288U CN 218941070 U CN218941070 U CN 218941070U
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Abstract
The utility model discloses a heater working circuit, which relates to the heating field, and comprises: a mains supply module for supplying 220V ac power; the step-down rectifying and filtering module is used for converting 220V alternating current into direct current; the switch module is used for controlling whether the circuit is conducted or not; the voltage stabilizing module is used for supplying stable voltage to power the driving heating module and the time-delay power-off module; the driving heating module is used for driving the heating module to work when the temperature is detected to be lower than the set temperature; the heating module is used for heating the electric heating element in a working way; compared with the prior art, the utility model has the beneficial effects that: the utility model aims to prevent the electric heating element from heating still to cause the temperature to be too high when the set temperature is reached, and is provided with a delay power-off module, after the circuit is started to work, the delay power-off module controls the driving heating module to disconnect the switch module after the set time, so that the circuit stops working and the environment temperature is prevented from being too high.
Description
Technical Field
The utility model relates to the field of heating, in particular to a heater working circuit.
Background
The electric heater is an electric appliance which achieves a heating effect by utilizing electric energy. The heater has the advantages of small volume, high heating power and wide application, and the core of the heater principle is energy conversion, and the most wide application is conversion of electric energy into heat energy. Electric heating elements such as heating resistor elements or electric heating films are often used for completing the conversion from electric energy to heat energy.
When the heater works normally, the power supply to the electric heating element is stopped when the set temperature is reached, and the heating is stopped; when the heater fails, the electric heating element continuously works, the temperature continuously rises, at the moment, the fuse arranged inside the electric heating element is disconnected, a circuit is protected, the fuse needs to be replaced when the electric heating element is used again, and the electric heating element is complex and needs to be improved.
Disclosure of Invention
The present utility model is directed to a heater operating circuit to solve the above-mentioned problems.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a heater operating circuit comprising:
a mains supply module for supplying 220V ac power;
the step-down rectifying and filtering module is used for converting 220V alternating current into direct current;
the switch module is used for controlling whether the circuit is conducted or not;
the voltage stabilizing module is used for supplying stable voltage to power the driving heating module and the time-delay power-off module;
the driving heating module is used for driving the heating module to work when the temperature is detected to be lower than the set temperature;
the heating module is used for heating the electric heating element in a working way;
the delay power-off module is used for switching off the switch module by driving the heating module after power-on delay;
the utility power module is connected with the step-down rectifying and filtering module and the heating module, the step-down rectifying and filtering module is connected with the switch module, the switch module is connected with the voltage stabilizing module, the voltage stabilizing module is connected with the driving heating module and the time-delay power-off module, the time-delay power-off module is connected with the driving heating module, and the driving heating module is connected with the heating module.
As still further aspects of the utility model: the switch module comprises a switch S1, a switch S21 and a resistor R1, one end of the switch S1 is connected with one end of the switch S21, the voltage-reducing rectification filter module, the other end of the switch S1 is connected with the other end of the switch S21 and one end of the resistor R1, and the other end of the resistor R1 is grounded.
As still further aspects of the utility model: the driving heating module comprises a potentiometer RP1, a thermistor RW, a resistor R2, a diode D5, a resistor R3, a triode V1, a triode V2, a resistor R4, a relay J2, a diode D6 and a MOS tube V3, wherein one end of the potentiometer RP1 is connected with the voltage stabilizing module, the D pole of the MOS tube V3 and one end of the resistor R4, the G pole of the MOS tube V3 is connected with the time delay power-off module, the S pole of the MOS tube V3 is connected with one end of the relay J2 and the negative pole of the diode D6, the other end of the relay J2 is connected with the positive pole of the diode D6 and the collector of the triode V2, the emitter of the triode V2 is grounded, the base of the triode V2 is connected with the emitter of the triode V1, the collector of the triode V1 is connected with the other end of the resistor R4, the base of the triode V1 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with the positive pole of the diode D5, the negative pole of the diode D5 is connected with one end of the resistor R2 and one end of the thermistor RW, and the other end of the resistor R2 is grounded, and the other end of the thermistor RW 1 is connected with a potential.
As still further aspects of the utility model: the heating module comprises a switch S22 and an electric heating element X, one end of the switch S22 is connected with one end of the mains supply module, the other end of the switch S22 is connected with one end of the electric heating element X, and the other end of the electric heating element X is connected with the other end of the mains supply module.
As still further aspects of the utility model: the time delay outage module includes resistance R5, resistance R6, electric capacity C4, timer U2, electric capacity C3, timer U2 is 555 timer, voltage stabilizing module is connected to resistance R5's one end, timer U2's No. 4 pin, timer U2's No. 8 pin, resistance R5's the other end one end of connecting resistance R6, electric capacity C4's one end is connected to resistance R6's the other end, timer U2's No. 2 pin, timer U2's No. 6 pin, electric capacity C4's the other end ground connection, timer U2's No. 5 pin passes through electric capacity C3 ground connection, timer U2's No. 1 pin ground connection, timer U2's No. 3 pin connection drive heating module.
Compared with the prior art, the utility model has the beneficial effects that: the utility model aims to prevent the electric heating element from heating still to cause the temperature to be too high when the set temperature is reached, and is provided with a delay power-off module, after the circuit is started to work, the delay power-off module controls the driving heating module to disconnect the switch module after the set time, so that the circuit stops working and the environment temperature is prevented from being too high.
Drawings
Fig. 1 is a schematic diagram of a heater operating circuit.
Fig. 2 is a circuit diagram of a heater operating circuit.
Fig. 3 is a pin diagram of a 555 timer.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
Referring to fig. 1, a heater operating circuit includes:
a mains supply module for supplying 220V ac power;
the step-down rectifying and filtering module is used for converting 220V alternating current into direct current;
the switch module is used for controlling whether the circuit is conducted or not;
the voltage stabilizing module is used for supplying stable voltage to power the driving heating module and the time-delay power-off module;
the driving heating module is used for driving the heating module to work when the temperature is detected to be lower than the set temperature;
the heating module is used for heating the electric heating element in a working way;
the delay power-off module is used for switching off the switch module by driving the heating module after power-on delay;
the utility power module is connected with the step-down rectifying and filtering module and the heating module, the step-down rectifying and filtering module is connected with the switch module, the switch module is connected with the voltage stabilizing module, the voltage stabilizing module is connected with the driving heating module and the time-delay power-off module, the time-delay power-off module is connected with the driving heating module, and the driving heating module is connected with the heating module.
In particular embodiments: referring to fig. 2, the mains power module introduces a live wire and a neutral wire to supply 220V ac power; the step-down rectifying and filtering module steps down through a transformer W, a rectifier formed by diodes D1 to D4 rectifies, and a filtering circuit formed by a capacitor C1, an inductor L1 and a resistor R1 carries out filtering treatment to obtain low-voltage direct current; the voltage stabilizing module supplies a stabilized voltage through a voltage stabilizer U1.
In this embodiment: referring to fig. 2, the switch module includes a switch S1, a switch S21, and a resistor R1, wherein one end of the switch S1 is connected to one end of the switch S21, and the buck rectifying filter module, the other end of the switch S1 is connected to the other end of the switch S21, one end of the resistor R1, and the other end of the resistor R1 is grounded.
The switch S1 is a key switch, and can be sprung up after being pressed, and the following circuit works electrically after the switch S1 is pressed.
In this embodiment: referring to fig. 2, the driving heating module includes a potentiometer RP1, a thermistor RW, a resistor R2, a diode D5, a resistor R3, a triode V1, a triode V2, a resistor R4, a relay J2, a diode D6, and a MOS tube V3, wherein one end of the potentiometer RP1 is connected to the voltage stabilizing module, the D pole of the MOS tube V3, and one end of the resistor R4, the G pole of the MOS tube V3 is connected to the time delay power-off module, the S pole of the MOS tube V3 is connected to one end of the relay J2, the negative pole of the diode D6, the other end of the relay J2 is connected to the positive pole of the diode D6, the collector of the triode V2, the emitter of the triode V2 is grounded, the base of the triode V2 is connected to the emitter of the triode V1, the collector of the triode V1 is connected to the other end of the resistor R4, the other end of the resistor R3 is connected to the positive pole of the diode D5, the negative pole of the diode D5 is connected to one end of the resistor R2, the other end of the thermistor RW, and the other end of the resistor R2 is grounded.
When the set temperature is higher than the ambient temperature, the voltage on the resistor R2 is larger, the voltage on the thermistor RW is smaller, the zener diode D5 is turned on, the triode V1 is turned on, the triode V2 is turned on, the relay J2 works, the switches S21 and S22 are closed, the switch S21 forms a self-locking circuit, and the switch S22 is closed to control the electric heating element X to work. When the set temperature is lower than the ambient temperature, the voltage on the resistor R2 is smaller, the voltage on the thermistor RW is larger, the zener diode D5 is turned off, the triode V1 is turned off, the triode V2 is turned off, and the relay J2 is turned off. The set temperature is adjusted by adjusting the resistance value of the potentiometer RP 1.
In this embodiment: referring to fig. 2, the heating module includes a switch S22 and an electric heating element X, one end of the switch S22 is connected to one end of the mains power module, the other end of the switch S22 is connected to one end of the electric heating element X, and the other end of the electric heating element X is connected to the other end of the mains power module.
After the switch S22 is closed, the two ends of the electric heating element X are connected with the live wire and the zero wire of the mains supply module to obtain electricity for work.
In this embodiment: referring to fig. 2 and 3, the delay power-off module includes a resistor R5, a resistor R6, a capacitor C4, a timer U2, and a capacitor C3, where the timer U2 is a 555 timer, one end of the resistor R5 is connected to the voltage stabilizing module, a pin No. 4 of the timer U2, and a pin No. 8 of the timer U2, the other end of the resistor R5 is connected to one end of the resistor R6, the other end of the resistor R6 is connected to one end of the capacitor C4, a pin No. 2 of the timer U2, a pin No. 6 of the timer U2, the other end of the capacitor C4 is grounded, a pin No. 5 of the timer U2 is grounded through the capacitor C3, and a pin No. 3 of the timer U2 is connected to the driving heating module.
When one of the No. 2 pin and the No. 6 pin of the 555 timer is at a low level, the No. 3 pin outputs a high level; after the voltage stabilizing module supplies power, the capacitor C4 is charged through the resistor R5 and the resistor R6, the pin No. 2 and the pin No. 6 of the timer U2 are low in level at the beginning, so that the pin No. 3 outputs high level, the MOS tube V3 is controlled to be conducted, and the relay J2 is powered on to work; along with the charging of the capacitor C4, the pins No. 2 and No. 6 of the timer U2 become high level, so that the pin No. 3 outputs low level, the MOS tube V3 is controlled to be cut off, and the relay J2 stops working. The time of the pin 3 of the timer U2 from high level to low level is delay time, and is influenced by the output voltage of the voltage stabilizing module, the resistor R5 and the resistor R6.
The working principle of the utility model is as follows: after the switch S1 is pressed down, the set temperature is lower than the ambient temperature, the relay J2 does not work, the switch S21 is not closed, the switch S1 is sprung, and the circuit does not work;
after the switch S1 is pressed down, the set temperature is higher than the ambient temperature, the relay J2 works, the switch S21 is closed, the switch S1 is sprung, the circuit forms a loop through the switch S21, and at the moment, the heating module works and heats, and the heating temperature rises;
when the circuit is normal, after the set temperature is reached, the relay J2 is powered off, and the circuit stops working;
when the circuit is abnormal, the relay J2 continues to work after reaching the set temperature, and the heating module continues to heat;
in order to avoid continuous rising of the ambient temperature caused by circuit abnormality, the set time delay power-off module controls the switch module to power off by driving the heating module when the circuit works for a time, so that overhigh ambient temperature is avoided.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. A heater operating circuit, characterized by:
the heater operating circuit includes:
a mains supply module for supplying 220V ac power;
the step-down rectifying and filtering module is used for converting 220V alternating current into direct current;
the switch module is used for controlling whether the circuit is conducted or not;
the voltage stabilizing module is used for supplying stable voltage to power the driving heating module and the time-delay power-off module;
the driving heating module is used for driving the heating module to work when the temperature is detected to be lower than the set temperature;
the heating module is used for heating the electric heating element in a working way;
the delay power-off module is used for switching off the switch module by driving the heating module after power-on delay;
the utility power module is connected with the step-down rectifying and filtering module and the heating module, the step-down rectifying and filtering module is connected with the switch module, the switch module is connected with the voltage stabilizing module, the voltage stabilizing module is connected with the driving heating module and the time-delay power-off module, the time-delay power-off module is connected with the driving heating module, and the driving heating module is connected with the heating module.
2. The heater operating circuit of claim 1, wherein the switch module comprises a switch S1, a switch S21, and a resistor R1, one end of the switch S1 is connected to one end of the switch S21, the buck rectifying filter module, the other end of the switch S1 is connected to the other end of the switch S21, one end of the resistor R1, and the other end of the resistor R1 is grounded.
3. The heater operating circuit according to claim 1, wherein the driving heating module comprises a potentiometer RP1, a thermistor RW, a resistor R2, a diode D5, a resistor R3, a triode V1, a triode V2, a resistor R4, a relay J2, a diode D6, a MOS tube V3, wherein one end of the potentiometer RP1 is connected to the voltage stabilizing module, the D pole of the MOS tube V3, and one end of the resistor R4, the G pole of the MOS tube V3 is connected to the time delay power-off module, the S pole of the MOS tube V3 is connected to one end of the relay J2 and the negative pole of the diode D6, the other end of the relay J2 is connected to the positive pole of the diode D6, the collector of the triode V2, the emitter of the triode V2 is grounded, the base of the triode V2 is connected to the emitter of the triode V1, the collector of the triode V4 is connected to the other end of the triode V1, the other end of the resistor R3 is connected to the positive pole of the diode D5, the negative pole of the diode D5 is connected to one end of the resistor R2, the other end of the thermistor RW 2 is connected to the other end of the thermistor RW, and the other end of the resistor RW is connected to the potential of the resistor is grounded.
4. The heater operating circuit of claim 1, wherein the heating module comprises a switch S22 and an electric heating element X, one end of the switch S22 is connected to one end of the mains power module, the other end of the switch S22 is connected to one end of the electric heating element X, and the other end of the electric heating element X is connected to the other end of the mains power module.
5. The heater operating circuit according to claim 1 or 3, wherein the delay power-off module comprises a resistor R5, a resistor R6, a capacitor C4, a timer U2 and a capacitor C3, the timer U2 is a 555 timer, one end of the resistor R5 is connected with the voltage stabilizing module, a pin 4 of the timer U2 and a pin 8 of the timer U2, the other end of the resistor R5 is connected with one end of the resistor R6, the other end of the resistor R6 is connected with one end of the capacitor C4, a pin 2 of the timer U2 and a pin 6 of the timer U2, the other end of the capacitor C4 is grounded, a pin 5 of the timer U2 is grounded through the capacitor C3, a pin 1 of the timer U2 is grounded, and a pin 3 of the timer U2 is connected with the driving heating module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222888288.3U CN218941070U (en) | 2022-10-31 | 2022-10-31 | Heater operating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222888288.3U CN218941070U (en) | 2022-10-31 | 2022-10-31 | Heater operating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218941070U true CN218941070U (en) | 2023-04-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222888288.3U Active CN218941070U (en) | 2022-10-31 | 2022-10-31 | Heater operating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218941070U (en) |
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2022
- 2022-10-31 CN CN202222888288.3U patent/CN218941070U/en active Active
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