CN216411978U - Controlled silicon output oven temperature control circuit - Google Patents
Controlled silicon output oven temperature control circuit Download PDFInfo
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- CN216411978U CN216411978U CN202123242220.XU CN202123242220U CN216411978U CN 216411978 U CN216411978 U CN 216411978U CN 202123242220 U CN202123242220 U CN 202123242220U CN 216411978 U CN216411978 U CN 216411978U
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- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 20
- 239000010703 silicon Substances 0.000 title claims abstract description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 64
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims description 20
- 230000007935 neutral effect Effects 0.000 claims description 2
- 150000003376 silicon Chemical class 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model discloses a controllable silicon output control oven temperature circuit, which relates to the oven field, and comprises: the power supply module is used for supplying 220V alternating current to the heating module; the main control module is used for controlling the conduction of the large-current protection module; compared with the prior art, the utility model has the beneficial effects that: the utility model utilizes the internal space of the temperature controller, adds the optocoupler and the 12A bidirectional thyristor at the voltage output end of the temperature controller, saves the solid-state relay, not only saves the cost of the solid-state relay and wires, but also saves the working time for installing the solid-state relay, and simultaneously increases the thermistor (RTC), when the external voltage rises, the resistance value of the RTC rises sharply or even becomes an open-circuit state when the output loop current is increased to exceed 12A due to the fault of heating equipment or other load short circuits, and the like, thereby turning off the output loop and protecting all components.
Description
Technical Field
The utility model relates to the field of ovens, in particular to a circuit for controlling the temperature of an oven by silicon controlled output.
Background
At present, a common method of an oven manufacturer is to connect a general temperature controller on the market to a Solid State Relay (SSR), and then connect the SSR to a heating device (such as a ceramic heating plate, a common hardware heating plate, and an infrared heating tube). The temperature controller outputs a voltage of 12V or 24V, the solid-state relay is controlled in an on-off mode, and the solid-state relay controls the heating device to heat.
Solid-state relays on the market are generally various 20A, 40A, 80A and the like, manufacturers select solid-state relays with different output currents according to actual requirements, the solid-state relays are very easy to damage due to poor surrounding environment or heating plate faults after being used for a period of time, the service lives of a plurality of solid-state relays are within 3 years, most of the conventional ovens adopt a multipoint control mode, namely a plurality of temperature controllers are adopted in one oven to control a plurality of heating devices, the temperatures of all positions in the internal space of the ovens are basically the same, and some manufacturers of the ovens for lithium battery aging use more than 100 temperature controllers, namely more than 100 solid-state relays are connected, wiring is complex, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a circuit for controlling the temperature of an oven by silicon controlled output, which aims to solve the problems in the prior art.
In order to achieve the purpose, the utility model provides the following technical scheme:
a thyristor output controlled oven temperature circuit comprising:
the power supply module is used for supplying 220V alternating current to the heating module;
the main control module is used for controlling the conduction of the large-current protection module;
the low-voltage protection module is used for disconnecting the circuit when the supply voltage of the power supply module is lower than a lower limit threshold value;
the high-current protection module is used for increasing the loop resistance value when the current flowing through the heating plate is higher than 12V;
the heating module is used for heating the heating plate;
the power supply module is connected with the heating module and the low-voltage protection module, the low-voltage protection module is connected with the heating module, the large-current protection module is connected with the heating module, and the main control module is connected with the large-current protection module.
As a still further scheme of the utility model: the master control module comprises an integrated circuit U1, the model of the integrated circuit U1 is 89C52, and a No. 33 pin of the integrated circuit U1 is connected with the high-current protection module.
As a still further scheme of the utility model: heavy current protection module includes resistance R1, opto-coupler U2, resistance R2, bidirectional thyristor Q1, resistance R3, master control module is connected to resistance R1's one end, No. 2 pins of opto-coupler U1 are connected to resistance R1's the other end, 5V voltage is connected to No. 1 pin of opto-coupler U2, No. 6 pins of opto-coupler U2 pass through the first end that bidirectional thyristor Q1 is connected to resistance R2, heating module is connected to bidirectional thyristor's second end, bidirectional thyristor's third end connecting resistance R3, No. 4 pins of opto-coupler U2, the model of opto-coupler U2 is M0C3052, resistance R3 is thermistor.
As a still further scheme of the utility model: the low-voltage protection module comprises a resistor R4, a resistor R5, a capacitor C1, a capacitor C2, a resistor R6, a resistor R7, an amplifier U1, a resistor R8 and a diode D2, wherein one end of the resistor R4 is connected with a live wire L, one end of the resistor R5 is connected with a zero wire N, the other end of the resistor R4 is connected with the other end of the resistor R5, a resistor R6 and a capacitor C1, the other end of the capacitor C1 is grounded, the other end of the resistor R6 is connected with the capacitor C2 and the resistor R7, the other end of the capacitor C2 is grounded, the other end of the resistor R7 is connected with the same-phase end of the amplifier U1, the inverting end of the amplifier U1 is connected with 24V voltage, the output end of the amplifier U1 is connected with the resistor R8, the other end of the resistor R8 is connected with the anode of the diode D2, and the cathode of the diode D2 is connected with the heating module.
As a still further scheme of the utility model: the heating module comprises a silicon controlled rectifier D1 and a heating plate X, one end of the heating plate X is connected with a large-current protection module, the other end of the heating plate X is connected with the negative electrode of a silicon controlled rectifier D1, the positive electrode of the silicon controlled rectifier D1 is connected with a power supply module, and the control electrode of the silicon controlled rectifier D1 is connected with a low-voltage protection module.
Compared with the prior art, the utility model has the beneficial effects that: the utility model utilizes the internal space of the temperature controller, adds the optocoupler and the 12A bidirectional thyristor at the voltage output end of the temperature controller, saves the solid-state relay, not only saves the cost of the solid-state relay and wires, but also saves the working time for installing the solid-state relay, and simultaneously increases the thermistor (RTC), when the external voltage rises, the resistance value of the RTC rises sharply or even becomes an open-circuit state when the output loop current is increased to exceed 12A due to the fault of heating equipment or other load short circuits, and the like, thereby turning off the output loop and protecting all components.
Drawings
Fig. 1 is a first circuit diagram of a thyristor output controlled oven temperature circuit.
Fig. 2 is a second circuit diagram of a thyristor output controlled oven temperature circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1 and 2, a thyristor output oven temperature control circuit includes:
the power supply module is used for supplying 220V alternating current to the heating module;
the main control module is used for controlling the conduction of the large-current protection module;
the low-voltage protection module is used for disconnecting the circuit when the supply voltage of the power supply module is lower than a lower limit threshold value;
the high-current protection module is used for increasing the loop resistance value when the current flowing through the heating plate is higher than 12V;
the heating module is used for heating the heating plate;
the power supply module is connected with the heating module and the low-voltage protection module, the low-voltage protection module is connected with the heating module, the large-current protection module is connected with the heating module, and the main control module is connected with the large-current protection module.
In this embodiment: referring to fig. 1, the main control module includes an integrated circuit U1, the model of the integrated circuit U1 is 89C52, and a pin 33 of the integrated circuit U1 is connected to the large current protection module.
When the integrated circuit U1 receives signals such as a heating button of the oven, the pin No. 33 of the integrated circuit U1 outputs signals.
In this embodiment: referring to fig. 1, the large current protection module includes a resistor R1, an optocoupler U2, a resistor R2, a triac Q1, and a resistor R3, one end of the resistor R1 is connected to the master control module, the other end of the resistor R1 is connected to the pin No. 2 of the optocoupler U1, the pin No. 1 of the optocoupler U2 is connected to a voltage of 5V, the pin No. 6 of the optocoupler U2 is connected to the first end of the triac Q1 through the resistor R2, the second end of the triac is connected to the heating module, the third end of the triac R3, the pin No. 4 of the optocoupler U2, the model of the optocoupler U2 is M0C3052, and the resistor R3 is a thermistor.
A No. 33 pin of the integrated circuit U1 outputs a signal to enable a No. 1 pin and a No. 2 pin of the optocoupler U2 to form a loop, and further enable a No. 6 pin of the optocoupler U2 to output a high level to provide a high level for a control electrode of the bidirectional thyristor Q1; so that the bidirectional thyristor Q1 is conducted and the heating module is electrified to work.
The resistor R3 is a thermistor, the thermistor is designed according to the power 350W of a heating plate of a manufacturer, the design is compatible to 200-500W, and when the output loop current is increased to exceed 12A due to the rise of external voltage, the fault of heating equipment or the short circuit of other loads, the resistance value of the RTC can be increased sharply.
In this embodiment: referring to fig. 2, the low-voltage protection module includes a resistor R4, a resistor R5, a capacitor C1, a capacitor C2, a resistor R6, a resistor R7, an amplifier U1, a resistor R8, and a diode D2, one end of the resistor R4 is connected to the live line L, one end of the resistor R5 is connected to the neutral line N, the other end of the resistor R4 is connected to the other end of the resistor R5, the resistor R6, and the capacitor C1, the other end of the capacitor C1 is grounded, the other end of the resistor R6 is connected to the capacitors C2 and R7, the other end of the capacitor C2 is grounded, the other end of the resistor R7 is connected to the non-inverting terminal of the amplifier U1, the inverting terminal of the amplifier U1 is connected to a 24V voltage, the output terminal of the amplifier U1 is connected to the resistor R8, the other end of the resistor R8 is connected to the anode of the diode D2, and the cathode of the diode D2 is connected to the heating module.
The output voltage of the power supply module is collected through a resistor R4 and a resistor R5, filtering processing is carried out through a capacitor C1, a capacitor C2, a resistor R6 and a resistor R7, the output voltage is output to the in-phase end of an amplifier U1, the in-phase end voltage is compared with the 24V voltage of the anti-phase end of the amplifier U1, when the output voltage of the power supply module is lower than 205V (lower limit threshold), the voltage of the anti-phase end of the amplifier U1 is higher than the voltage of the in-phase end, the amplifier U1 outputs low level, so that the controlled silicon D1 is cut off, and the working circuit of the heating plate X is disconnected.
In this embodiment: referring to fig. 2, the heating module includes a thyristor D1 and a heating plate X, one end of the heating plate X is connected to the large current protection module, the other end of the heating plate X is connected to the negative electrode of the thyristor D1, the positive electrode of the thyristor D1 is connected to the power supply module, and the control electrode of the thyristor D1 is connected to the low voltage protection module.
One end of the heating plate X is connected with the second end of the bidirectional controllable silicon Q1, and the resistor R3 is connected with the zero line N, so that when the bidirectional controllable silicon Q1 is conducted, the heating plate X receives 220V voltage output by the power supply module (the live wire L and the zero line N) and is electrified to work.
The working principle of the utility model is as follows: the power supply module supplies 220V alternating current for the heating module, the main control module controls the large-current protection module to be conducted, the low-voltage protection module disconnects a circuit when the supply voltage of the heating plate is lower than a lower limit threshold value, the loop resistance value of the large-current protection module rises when the current flowing through the heating plate is higher than 12V, and the heating module controls the heating plate to work and heat.
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 invention may be embodied in other specific forms without departing from the spirit or essential attributes 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 description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a silicon controlled rectifier output control oven temperature circuit which characterized in that:
this silicon controlled rectifier output control oven temperature circuit includes:
the power supply module is used for supplying 220V alternating current to the heating module;
the main control module is used for controlling the conduction of the large-current protection module;
the low-voltage protection module is used for disconnecting the circuit when the supply voltage of the power supply module is lower than a lower limit threshold value;
the high-current protection module is used for increasing the loop resistance value when the current flowing through the heating plate is higher than 12V;
the heating module is used for heating the heating plate;
the power supply module is connected with the heating module and the low-voltage protection module, the low-voltage protection module is connected with the heating module, the large-current protection module is connected with the heating module, and the main control module is connected with the large-current protection module.
2. The thyristor output controlled oven temperature circuit of claim 1, wherein the master control module comprises an integrated circuit U1, the model number of the integrated circuit U1 is 89C52, and the pin number 33 of the integrated circuit U1 is connected to the high current protection module.
3. The controlled silicon output oven temperature control circuit according to claim 1, wherein the high current protection module comprises a resistor R1, an optocoupler U2, a resistor R2, a bidirectional controlled silicon Q1 and a resistor R3, one end of the resistor R1 is connected with the master control module, the other end of the resistor R1 is connected with a No. 2 pin of the optocoupler U1, a No. 1 pin of the optocoupler U2 is connected with 5V voltage, a No. 6 pin of the optocoupler U2 is connected with a first end of the bidirectional controlled silicon Q1 through the resistor R2, a second end of the bidirectional controlled silicon is connected with the heating module, a third end of the bidirectional controlled silicon is connected with the resistor R3 and a No. 4 pin of the optocoupler U2, the model of the optocoupler U2 is M0C3052, and the resistor R3 is a thermistor.
4. The controlled silicon output oven temperature control circuit according to claim 1, wherein the low voltage protection module comprises a resistor R4, a resistor R5, a capacitor C1, a capacitor C2, a resistor R6, a resistor R7, an amplifier U1, a resistor R8 and a diode D2, one end of the resistor R4 is connected with the live wire L, one end of the resistor R5 is connected with the neutral wire N, the other end of the resistor R4 is connected with the other end of the resistor R5, the resistor R6 and the capacitor C1, the other end of the capacitor C1 is grounded, the other end of the resistor R6 is connected with the capacitor C2 and the resistor R7, the other end of the capacitor C2 is grounded, the other end of the resistor R7 is connected with the non-phase end of the amplifier U1, the inverting end of the amplifier U1 is connected with 24V voltage, the output end of the amplifier U1 is connected with the resistor R8, the other end of the resistor R8 is connected with the anode of the diode D2, and the cathode of the diode D2 is connected with the heating module.
5. The thyristor output controlled oven temperature circuit according to claim 3, wherein the heating module comprises a thyristor D1 and a heating plate X, one end of the heating plate X is connected with the high current protection module, the other end of the heating plate X is connected with the negative electrode of the thyristor D1, the positive electrode of the thyristor D1 is connected with the power supply module, and the control electrode of the thyristor D1 is connected with the low voltage protection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123242220.XU CN216411978U (en) | 2021-12-22 | 2021-12-22 | Controlled silicon output oven temperature control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123242220.XU CN216411978U (en) | 2021-12-22 | 2021-12-22 | Controlled silicon output oven temperature control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN216411978U true CN216411978U (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123242220.XU Active CN216411978U (en) | 2021-12-22 | 2021-12-22 | Controlled silicon output oven temperature control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN216411978U (en) |
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- 2021-12-22 CN CN202123242220.XU patent/CN216411978U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231227 Address after: 315000, No. 227 Langxia Road, Langxia Street, Yuyao City, Ningbo City, Zhejiang Province (self declared) Patentee after: Ningbo Gengxin Technology Co.,Ltd. Address before: 518125 806, xinbaoyi industry and trade building, No. 29, the third industrial zone, houting community, Shajing street, Bao'an District, Shenzhen, Guangdong Province Patentee before: SHENZHEN CITY IS BAOJIA ELECTRIC AUTOMATION Co.,Ltd. |
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| TR01 | Transfer of patent right |