CN204786738U - Room heater control circuit - Google Patents
Room heater control circuit Download PDFInfo
- Publication number
- CN204786738U CN204786738U CN201520354837.6U CN201520354837U CN204786738U CN 204786738 U CN204786738 U CN 204786738U CN 201520354837 U CN201520354837 U CN 201520354837U CN 204786738 U CN204786738 U CN 204786738U
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- CN
- China
- Prior art keywords
- connects
- diode
- chip
- relay
- control circuit
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- Expired - Fee Related
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Abstract
The utility model discloses a room heater control circuit, including key switch K, rectifier bridge T, transformer W, bidirectional thyristor Q1 and chip IC1, relay J's contact J -1 and 220V alternating current, key switch K's other end connection bidirectional thyristor Q1's a central electrode, relay J's contact J -1's the other end and transformer W's winding N1 are connected to key switch K's one end. The utility model discloses room heater control circuit utilizes the bidirectional thyristor to replace opening and turn -offing of relay controlled heating pipe, has increased the life of circuit to the circuit uses high accuracy thermistor as the control by temperature change original paper, has increased the degree of accuracy of circuit, has still added the power failure self -locking circuit simultaneously, prevents because of the electric energy that leads to of incoming telegram is extravagant again after having a power failure, and simple structure, components and parts are few simultaneously, and the cost of manufacture is hanged down.
Description
Technical field
The utility model relates to a kind of control circuit, specifically a kind of control circuit of warmer.
Background technology
Warmer is a kind of common household electrical appliance, it can convert heat energy heating to electric energy, needed for living for people, simultaneously also can be temperature automatically controlled, and traditional warmer temperature-adjusting circuit normally utilizes the action of relay to carry out heating process control.Simple employing relay carries out the control of heating power, easily causes heating process uneven.Due to heater circuit heating with full power during relay adhesive, heat is large; But relay does not heat again when disconnecting completely.Except heating with full power, uniform heating process cannot be obtained at all, and due to actuating of relay number of times limited, so relay can damage very soon, in use if there is power failure, people are easy to forget closedown warmer, thus warmer continuous firing after causing sending a telegram here, waste electric energy.
Utility model content
The purpose of this utility model is to provide a kind of control circuit of warmer, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of control circuit of warmer, comprise key switch K, rectifier bridge T, transformer W, bidirectional triode thyristor Q1 and chip IC 1, one end of described key switch K connects contact J-1 and the 220V alternating current of relay J, the other end of key switch K connects a main electrode of bidirectional triode thyristor Q1, the other end of the contact J-1 of relay J and the winding N1 of transformer W, the other end of the winding N1 of transformer W connects the other end and the heating tube A of 220V alternating current, the two ends of the winding N2 of transformer W connect the port one of rectifier bridge T and the port 3 of rectifier bridge T respectively, the port 2 of rectifier bridge T connects the pin 1 of electric capacity C2 and chip IC 2, pin 2 ground connection of chip IC 2, the pin 3 contact resistance R3 of chip IC 2, the negative electrode of diode D1, the negative electrode of diode D4, a stiff end of electric capacity C1 and potentiometer RP1, another main electrode of bidirectional triode thyristor Q1 connects heating tube A, the control pole contact resistance R1 of bidirectional triode thyristor Q1, the other end of resistance R1 connects the negative electrode of diode D3, the anode of diode D3 connects the pin 3 of chip IC 1, the other end of resistance R2 connects the anode of diode D1, the negative electrode of diode D2 and the other end of electric capacity C2, the anode of diode D2 connects the other end of electric capacity C1, the anode of diode D4, thermistor RS, the pin 2 of relay J and chip IC 1, the pin 1 of chip IC 1 connects thermistor RS, another stiff end of potentiometer RP1 and the sliding end of potentiometer RP1, the other end of the other end contact resistance R3 of relay J.
As preferred version of the present utility model: described relay J is normally opened contact relay.
As preferred version of the present utility model: the model of described chip IC 1 is LM317, the model of described chip IC 2 is LM7809.
As preferred version of the present utility model: the model of described thermistor RS is 103AT-4.
As preferred version of the present utility model: described diode D3 is light emitting diode.
Compared with prior art, the beneficial effects of the utility model are: the utility model control circuit of warmer utilizes bidirectional triode thyristor to substitute unlatching and the shutoff of Control heating tube, add the service life of circuit, and circuit uses high precision thermosensitive resistor as temperature control original paper, add the degree of accuracy of circuit, also add Powercut self locking power circuit simultaneously, prevent because of the waste of energy caused of sending a telegram here again after power failure, structure is simple simultaneously, components and parts are few, and cost of manufacture is low.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of control circuit of warmer.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of control circuit of warmer, comprise key switch K, rectifier bridge T, transformer W, bidirectional triode thyristor Q1 and chip IC 1, one end of described key switch K connects contact J-1 and the 220V alternating current of relay J, the other end of key switch K connects a main electrode of bidirectional triode thyristor Q1, the other end of the contact J-1 of relay J and the winding N1 of transformer W, the other end of the winding N1 of transformer W connects the other end and the heating tube A of 220V alternating current, the two ends of the winding N2 of transformer W connect the port one of rectifier bridge T and the port 3 of rectifier bridge T respectively, the port 2 of rectifier bridge T connects the pin 1 of electric capacity C2 and chip IC 2, pin 2 ground connection of chip IC 2, the pin 3 contact resistance R3 of chip IC 2, the negative electrode of diode D1, the negative electrode of diode D4, a stiff end of electric capacity C1 and potentiometer RP1, another main electrode of bidirectional triode thyristor Q1 connects heating tube A, the control pole contact resistance R1 of bidirectional triode thyristor Q1, the other end of resistance R1 connects the negative electrode of diode D3, the anode of diode D3 connects the pin 3 of chip IC 1, the other end of resistance R2 connects the anode of diode D1, the negative electrode of diode D2 and the other end of electric capacity C2, the anode of diode D2 connects the other end of electric capacity C1, the anode of diode D4, thermistor RS, the pin 2 of relay J and chip IC 1, the pin 1 of chip IC 1 connects thermistor RS, another stiff end of potentiometer RP1 and the sliding end of potentiometer RP1, the other end of the other end contact resistance R3 of relay J.
Relay J is normally opened contact relay.The model of chip IC 1 is LM317, and the model of described chip IC 2 is LM7809.The model of thermistor RS is 103AT-4.Diode D3 is light emitting diode.
Operation principle of the present utility model is: during use, and push button K switch, and relay J must conduct, its normally opened contact J-1 adhesive, and circuit ON, even if now unclamp key switch K, circuit also can normally work.Become stable 9V direct current after the transformer W step-down of 220V alternating current, rectifier bridge T rectification, electric capacity C1 filtering, chip IC 1 voltage stabilizing to power to control circuit, when the temperature value that temperature sets lower than thermistor RS, the resistance of thermistor RS is larger, 1 pin voltage conducting higher than its cut-in voltage of chip IC 1, light light emitting diode D3, and provide trigger voltage for bidirectional triode thyristor Q1, make bidirectional triode thyristor Q1 conducting, electrothermal tube A starts heating.When temperature reaches design temperature, along with the continuous reduction of thermistor RS resistance, the voltage drop of circuit of three-terminal voltage-stabilizing integrated IC1 control end ends below cut-in voltage, and light emitting diode D3 extinguishes, and bidirectional triode thyristor Q1 ends, and electrothermal tube A stops heating.When in use occurring having a power failure, relay J dead electricity, its normally opened contact J-1 disconnects, even if circuit also can not work when therefore again sending a telegram here, prevents because of the waste of energy caused of sending a telegram here again after power failure.
Claims (5)
1. a control circuit of warmer, comprise key switch K, rectifier bridge T, transformer W, bidirectional triode thyristor Q1 and chip IC 1, it is characterized in that, one end of described key switch K connects contact J-1 and the 220V alternating current of relay J, the other end of key switch K connects a main electrode of bidirectional triode thyristor Q1, the other end of the contact J-1 of relay J and the winding N1 of transformer W, the other end of the winding N1 of transformer W connects the other end and the heating tube A of 220V alternating current, the two ends of the winding N2 of transformer W connect the port one of rectifier bridge T and the port 3 of rectifier bridge T respectively, the port 2 of rectifier bridge T connects the pin 1 of electric capacity C2 and chip IC 2, pin 2 ground connection of chip IC 2, the pin 3 contact resistance R3 of chip IC 2, the negative electrode of diode D1, the negative electrode of diode D4, a stiff end of electric capacity C1 and potentiometer RP1, another main electrode of bidirectional triode thyristor Q1 connects heating tube A, the control pole contact resistance R1 of bidirectional triode thyristor Q1, the other end of resistance R1 connects the negative electrode of diode D3, the anode of diode D3 connects the pin 3 of chip IC 1, the other end of resistance R2 connects the anode of diode D1, the negative electrode of diode D2 and the other end of electric capacity C2, the anode of diode D2 connects the other end of electric capacity C1, the anode of diode D4, thermistor RS, the pin 2 of relay J and chip IC 1, the pin 1 of chip IC 1 connects thermistor RS, another stiff end of potentiometer RP1 and the sliding end of potentiometer RP1, the other end of the other end contact resistance R3 of relay J.
2. a kind of control circuit of warmer according to claim 1, is characterized in that, described relay J is normally opened contact relay.
3. according to a kind of control circuit of warmer according to claim 1, it is characterized in that, the model of described chip IC 1 is LM317, and the model of described chip IC 2 is LM7809.
4. according to a kind of control circuit of warmer according to claim 1, it is characterized in that, the model of described thermistor RS is 103AT-4.
5. according to a kind of control circuit of warmer according to claim 1, it is characterized in that, described diode D3 is light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354837.6U CN204786738U (en) | 2015-05-28 | 2015-05-28 | Room heater control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354837.6U CN204786738U (en) | 2015-05-28 | 2015-05-28 | Room heater control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204786738U true CN204786738U (en) | 2015-11-18 |
Family
ID=54526784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520354837.6U Expired - Fee Related CN204786738U (en) | 2015-05-28 | 2015-05-28 | Room heater control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204786738U (en) |
-
2015
- 2015-05-28 CN CN201520354837.6U patent/CN204786738U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160528 |