CN212012143U - Intelligent control device for direct power supply of heating body - Google Patents
Intelligent control device for direct power supply of heating body Download PDFInfo
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- CN212012143U CN212012143U CN202020807281.2U CN202020807281U CN212012143U CN 212012143 U CN212012143 U CN 212012143U CN 202020807281 U CN202020807281 U CN 202020807281U CN 212012143 U CN212012143 U CN 212012143U
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Abstract
The utility model discloses a heating element direct power supply intelligent control device, which comprises two groups of heating elements in series connection consisting of a plurality of linear resistance type heating elements, wherein the two groups of heating elements in series connection are powered by an alternating current power supply, the middle taps of the two groups of heating elements are connected with a rectifying circuit through a mechanical switch, and the output end of the rectifying circuit is connected with a voltage stabilizing circuit and a filter circuit to provide a stable direct current power supply for a control system; and an electric control switch device is also connected in series on the heating body, and the control system controls the on-off of the electric control switch device. The utility model realizes the voltage reduction of the power supply by utilizing the sectional voltage division of the linear resistance type heating body, properly adjusts the proportion of each section and obtains the stable voltage of the control system; the utility model realizes zero standby power consumption by matching with a mechanical switch of a low-voltage part, meets all low-power application occasions, greatly reduces social energy consumption when being adopted in large batch, and meets the requirements of environmental protection, energy conservation and emission reduction; the utility model discloses the scheme belongs to linear power, and external interfering signal is little, and EMC performance is excellent.
Description
Technical Field
The utility model relates to an electrical apparatus generates heat, in particular to heat-generating body direct power supply intelligent control device.
Background
The heating electric appliance is widely applied to the fields of kitchen cooking, water heaters, electric heater food processing, industrial equipment and the like at present, and the control of the power and the temperature of the heating electric appliance and the safety protection control are core tasks of the control of the heating electric appliance. Therefore, the intelligent control system is more and more widely applied to control of the heating electric appliances.
Intelligent control systems require a stable and reliable power supply. The traditional power supply mode has three types, namely, switching power supply, transformer linear power supply and resistance-capacitance voltage reduction power supply, and has various specific self defects:
the switching power supply supplies power: the efficiency is high, but high-frequency interference signals are obvious, and the cost is high;
the transformer linear power supply supplies power: the efficiency is low, the cost is high, and the standby power consumption is high;
resistance-capacitance voltage reduction and power supply: the power supply current is small, the standby power consumption is high, and the power supply circuit is only used for a simple function control system and cannot be used in application occasions with more functions and low power consumption requirements.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is: the intelligent control device for direct power supply of the heating body realizes voltage reduction of a power supply by utilizing segmented voltage division of the linear resistance type heating body, and obtains stable voltage of a control system. The standby power consumption is zero by matching with a mechanical switch of a low-voltage part, and all low-power-consumption application occasions are met.
The technical scheme of the utility model is that:
the intelligent control device for directly supplying power to the heating body comprises two groups of heating bodies which are connected in series and formed by a plurality of linear resistance type heating bodies, wherein the two groups of heating bodies which are connected in series are supplied with power by an alternating current power supply; and an electric control switch device is also connected in series on the heating body, and the control system controls the on-off of the electric control switch device.
Preferably, the middle tap of the two groups of heating elements is also connected with a mechanical switch in series.
Preferably, the input end of the voltage stabilizing circuit is also connected in series with a winding resistor for current limiting.
Preferably, the alternating current power supply comprises a live wire ACL and a zero wire ACN; in the two groups of heating elements connected in series, the first group of heating elements is connected with a live wire ACL, the second group of heating elements is grounded through an electric control switch device, and a middle tap and a zero line ACN are connected with two input ends of a rectifying circuit.
Preferably, a filter circuit is also connected between the rectifying circuit and the voltage stabilizing circuit.
Preferably, the control system is connected with and drives the on-off of the electrically controlled switching device through a driving circuit formed by a switching tube Q1.
Preferably, the electrically controlled switch device is one of a relay, a thyristor, a triode or an optical relay.
Preferably, the two groups of heating elements connected in series obtain the required divided alternating voltage by adjusting the resistance ratio.
The utility model has the advantages that:
1. the utility model realizes the voltage reduction of the power supply by utilizing the sectional voltage division of the linear resistance type heating body, properly adjusts the proportion of each section and obtains the stable voltage of the control system;
2. the utility model realizes zero standby power consumption by matching with a mechanical switch of a low-voltage part, meets all low-power application occasions, greatly reduces social energy consumption when being adopted in large batch, and meets the requirements of environmental protection, energy conservation and emission reduction;
3. the scheme of the utility model belongs to a linear power supply, the external interference signal is small, and the EMC performance is excellent;
4. the utility model discloses scheme low cost adopts in batches and can reduce product cost by a wide margin, but wide application in resistance-type heating domestic appliance or industrial application occasion.
Drawings
The invention will be further described with reference to the following drawings and examples:
FIG. 1 is a schematic diagram of an intelligent control device for directly supplying power to a heating element in an embodiment;
fig. 2 is a schematic diagram of the zener diode ZD of fig. 1 replacing the three-terminal regulator IC 2.
Detailed Description
As shown in fig. 1, the intelligent control device for directly supplying power to the heating element of this embodiment includes two resistance heating elements R _ HT1 and R _ HT2 connected in series, two groups of heating elements connected in series are supplied with power by an ac power supply, and the ac power supply includes a live wire ACL, a zero wire ACN, and a ground HEAT terminal. One end of the heating element R _ HT1 is connected with a live wire ACL, the heating element R _ HT1 is connected with a HEAT terminal through a relay RY1, the middle tap of the heating element R _ HT1 and the middle tap of the heating element R _ HT2 are connected with one end of a mechanical switch S1, and the other end of the mechanical switch S1 is connected with a neutral wire ACN and respectively connected with two input ends of a bridge stack BG 1.
In the embodiment, the existing resistance type heating body is divided into two sections of R _ HT1 and R _ HT2, and the resistance ratio of the two sections is properly adjusted to obtain proper divided alternating voltage. And tapping the middle of the two sections of heating bodies, and rectifying the alternating current voltage obtained by voltage division through a bridge rectifier to obtain low-voltage direct current voltage. When the mechanical switch S1 is turned off, the whole power supply and the heating body can be switched off, and zero standby power consumption is realized.
In fig. 1, the output end of the bridge stack BG1 (or a rectifier diode circuit with the same function) is connected to the input end of the zener diode ZD through a first filter circuit composed of a resistor R1 and an electrolytic capacitor BC1 and a current limiting resistor Rp, and the current limiting resistor Rp is a winding resistor. The voltage stabilizing diode outputs 5V direct current voltage, and the voltage is filtered by a second filter circuit consisting of an electrolytic capacitor BC2 and a capacitor C2 to obtain a stable power supply required by the control system.
As shown in fig. 1, a control end GK of the control system drives a relay RY1 to be switched on and off through a driving circuit composed of a triode Q1, resistors R3 and R4, and a diode D5, and two control ends of the relay RY1 are respectively connected with a 5V direct-current voltage output by a voltage regulator tube and a collector of the triode Q1, and are reversely connected in parallel with the diode D5.
The resistance type heating elements of the embodiment can be a plurality of resistance type heating elements, the resistance type heating elements are divided into two groups, one group realizes voltage division, the proportion of each section is properly adjusted, and the voltage required by a control system can be obtained.
The relay RY1 of the present embodiment may also adopt one of a thyristor, a triode, or an optical relay.
The bridge stack BG1 of this embodiment may also be composed of discrete diodes.
The zener diode ZD of this embodiment may also employ a three-terminal regulator IC2, as shown in fig. 2.
The utility model discloses a but control system power supply scheme wide application in resistance-type heating domestic appliance or industrial application occasion.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All modifications made according to the spirit of the main technical scheme of the present invention shall be covered within the protection scope of the present invention.
Claims (6)
1. The intelligent control device for directly supplying power to the heating body is characterized by comprising two groups of heating bodies which are connected in series and composed of a plurality of linear resistance type heating bodies, wherein the two groups of heating bodies which are connected in series are supplied with power by an alternating current power supply; and an electric control switch device is also connected in series on the heating body, and the control system controls the on-off of the electric control switch device.
2. A heating body direct power supply intelligent control device as claimed in claim 1, characterized in that a mechanical switch is also connected in series on the middle tap of the two groups of heating bodies.
3. A heating body direct power supply intelligent control device as claimed in claim 2, wherein the alternating current power supply comprises a live wire ACL and a null wire ACN; in the two groups of heating elements connected in series, the first group of heating elements is connected with a live wire ACL, the second group of heating elements is grounded through an electric control switch device, and a middle tap and a zero line ACN are connected with two input ends of a rectifying circuit.
4. A heating body direct power supply intelligent control device as claimed in claim 3, characterized in that a filter circuit is also connected between the rectification circuit and the voltage stabilizing circuit.
5. A heating body direct power supply intelligent control device as claimed in claim 1, wherein the electric control switch device adopts one of a relay, a silicon controlled rectifier, a triode or an optical relay.
6. A heater direct power supply intelligent control device as claimed in claim 1, wherein the two sets of heaters connected in series obtain the required divided alternating voltage by adjusting the resistance ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020807281.2U CN212012143U (en) | 2020-05-15 | 2020-05-15 | Intelligent control device for direct power supply of heating body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020807281.2U CN212012143U (en) | 2020-05-15 | 2020-05-15 | Intelligent control device for direct power supply of heating body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212012143U true CN212012143U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202020807281.2U Active CN212012143U (en) | 2020-05-15 | 2020-05-15 | Intelligent control device for direct power supply of heating body |
Country Status (1)
| Country | Link |
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| CN (1) | CN212012143U (en) |
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2020
- 2020-05-15 CN CN202020807281.2U patent/CN212012143U/en active Active
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