CN213122730U - Single-wire temperature control system of electric heating appliance - Google Patents
Single-wire temperature control system of electric heating appliance Download PDFInfo
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- CN213122730U CN213122730U CN202022492372.4U CN202022492372U CN213122730U CN 213122730 U CN213122730 U CN 213122730U CN 202022492372 U CN202022492372 U CN 202022492372U CN 213122730 U CN213122730 U CN 213122730U
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Abstract
The utility model discloses an electric heating appliance single line temperature control system, including microprocessor controller, thyristor Q1, resistance R1 and electric capacity C1, electric capacity C1, resistance R5, thyristor Q1's positive pole, thyristor Q2's positive pole and fuse F1 are connected to resistance R1's one end, and commercial power L is connected through switch K1-1 to another point of fuse F1, and electric capacity C1's the other end and resistance R2 are connected to resistance R1's the other end, and diode D1's positive pole and diode ZD 1's negative pole are connected to resistance R2's the other end. The utility model discloses the circuit has and uses the monitoring of single line that generates heat to have interface contact few, and is small, and components and parts are few characteristics, and is with low costs, and the fault rate is low, simple manufacture, easy operation, and stability is reliable, and the security is high, and no electromagnetic pollution can detect the temperature of full circuit moreover to realize single line constant temperature accuse temperature that generates heat, folding use can not arouse the conflagration yet.
Description
Technical Field
The utility model relates to a control by temperature change technical field specifically is an electric heating appliance single line temperature control system.
Background
The electric blanket (pad) in the current market causes fire, most of the reasons are caused by overhigh local temperature inside the electric blanket or fire jumping of a heating part, some of the traditional controllers adopt double-helix protection, one of the double-helix protection is specially used as a protection wire, a short circuit is formed after a medium between two heating wires is melted after the temperature of the heating wire is overhigh, and the protection is realized by fusing the temperature fuse of the controller. This causes permanent destruction of the heating element and makes it impossible to recover the use. And the interface is too much and labor-consuming, the wire cost is high, and the heating element can be permanently destroyed and cannot be repaired for use if the wire is slightly improperly used.
Another method is to use a thermistor to detect the temperature of a local point, and then control the temperature of the whole loop. In this case, if the folding operation is performed, the controller cannot detect the real-time temperature at the position without the thermistor, and thus, the local temperature is too high, which may cause a fire.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electric heating appliance single line temperature control system to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a single-wire temperature control system of an electric heating appliance comprises a microprocessor controller, a thyristor Q, a resistor R and a capacitor C, wherein one end of the resistor R is connected with the capacitor C, the resistor R, the anode of the thyristor Q and a fuse F, the other point of the fuse F is connected with a mains supply L through a switch K-1, the other end of the resistor R is connected with the other end of the capacitor C and the resistor R, the other end of the resistor R is connected with the anode of a diode D and the cathode of a diode ZD, the cathode of the diode D is connected with the capacitor C, the resistor R and the resistor R, the other end of the resistor R is connected with the resistor R and the microprocessor controller, the other end of the resistor R is connected with the microprocessor controller, the cathode of the thyristor Q is connected with the cathode of the diode D and the cathode of the diode D, the anode of the diode D is connected with the other end of the, the control electrode of the thyristor Q1 is connected with the cathode of a diode D3, the anode of a diode D3 is connected with the microprocessor controller through a resistor R5, the cathode of the thyristor Q2 is connected with the cathode of a diode D6 and the cathode of a diode D8, the anode of a diode D6 is connected with the other end of a resistor R9 and a resistor R10, the other end of a resistor R10 is connected with a capacitor C5 and the microprocessor controller, the control electrode of the thyristor Q2 is connected with the cathode of a diode D5, the anode of a diode D5 is connected with the microprocessor controller through a resistor R8, the anode of a diode ZD1 is connected with the other end of a capacitor C2, the other end of a capacitor C3, the cathode of a diode D2, one end of a commercial N diode D7, the other end of a capacitor C5 and the other end of a diode D8, two ends of the diode D7 are connected with a zone heating wire in parallel.
As a further technical solution of the present invention: the micro-processing controller is also connected with a temperature alarm display part.
As a further technical solution of the present invention: the thyristor Q1 is a single-phase thyristor.
As a further technical solution of the present invention: the thyristor Q2 is a single-phase thyristor.
As a further technical solution of the present invention: the diode ZD1 is a zener diode.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses the circuit has and uses the monitoring of single line that generates heat to have interface contact few, and is small, and components and parts are few characteristics, and is with low costs, and the fault rate is low, simple manufacture, easy operation, and stability is reliable, and the security is high, and no electromagnetic pollution can detect the temperature of full circuit moreover to realize single line constant temperature accuse temperature that generates heat, folding use can not cause the fire yet.
Drawings
Fig. 1 is a circuit diagram of the present invention.
Fig. 2 is a schematic diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1: referring to fig. 1, a single-wire temperature control system of an electric heating appliance includes a microprocessor controller, a thyristor Q1, a resistor R1 and a capacitor C1, one end of the resistor R1 is connected to the capacitor C1, the resistor R1, an anode of the thyristor Q1 and a fuse F1, another point of the fuse F1 is connected to a utility power L through a switch K1-1, another end of the resistor R1 is connected to another end of the capacitor C1 and the resistor R1, another end of the resistor R1 is connected to an anode of the diode D1 and a cathode of the diode ZD1, a cathode of the diode D1 is connected to the capacitor C1, the resistor R1 and the resistor R1, another end of the resistor R1 is connected to the resistor R1 and the microprocessor controller, another end of the resistor R1 is connected to the microprocessor controller, a cathode of the thyristor Q1 is connected to a cathode of the diode D1 and a cathode of the diode D1, the other end of the resistor R7 is connected with a capacitor C4 and the microprocessor controller, the control electrode of the thyristor Q1 is connected with the cathode of a diode D3, the anode of the diode D3 is connected with the microprocessor controller through a resistor R5, the cathode of the thyristor Q2 is connected with the cathode of a diode D6 and the cathode of a diode D8, the anode of a diode D6 is connected with the other end of a resistor R9 and a resistor R10, the other end of the resistor R10 is connected with the capacitor C5 and the microprocessor controller, the control electrode of the thyristor Q2 is connected with the cathode of a diode D5, the anode of a diode D5 is connected with the microprocessor controller through a resistor R8, the anode of the diode ZD1 is connected with the other end of a capacitor C2, the other end of a capacitor C3 and the, one end of a commercial power N diode D7, the other end of a capacitor C5 and the other end of a diode D8, a first-zone heating wire is connected in parallel with two ends of the diode D7, and a second-zone heating wire is connected in parallel with two ends of the diode D8. The micro-processing controller is also connected with a temperature alarm display part.
The working principle is as follows: alternating current 220V passes through a power switch K1, a protective tube F1, a resistance-capacitance voltage reduction C1, R1, a current-limiting resistor R2, a rectifier tube D1, a voltage regulator tube ZD1 and a capacitor C1.C2 to form a 5V voltage-stabilizing power supply which supplies power to a microprocessor controller, the 5V voltage is divided by the resistors R3 and R4 to obtain a voltage signal for sampling by a microprocessor, and R5 supplies a synchronous sampling signal to a processor for microprocessing operation. The 1-region feedback signal is provided to the microprocessor after + 5V passes through a resistor R6, an isolation diode D4, load heating wire voltage division through R7 and C4 shaping. The 2-region feedback signal is provided for the microprocessor after + 5V passes through a resistor R9, an isolation diode D6 and load heating wire voltage division, R10 and C5 shaping, and trigger pulse 1 passes through a resistor R5 isolation diode D3 to trigger the on-off of a silicon controlled rectifier Q1 to supply power to the 1-region heating wire. The trigger pulse 2 triggers the on-off of the controllable silicon Q2 through the resistor R8 and the isolating diode D5 to supply power to the zone 1 heating wire, when the controllable silicon Q1 or the controllable silicon Q2 is out of control, the D7 or the D8 is conducted to fuse the fuse, safety protection is formed, and 220V returns to the main loop through the unidirectional controllable silicon to the load.
The principle of the design is shown in figure 2, in the working process, the resistance value of the heating wire matched with the controller changes along with the temperature, the internal resistance of the matched heating wire changes uniformly and linearly, and the slight changes are sensed by the feedback circuit through resistance voltage division, processed by the filter shaping circuit and then sent to the microprocessor for processing. And (3) carrying out micro-processing on the voltage and the electric heating wire internal resistance signals which are comprehensively acquired, and obtaining the corresponding temperature and the working state of the heating wire, whether the flashover and the short circuit occur or not and whether the heating wire is overheated or not through calculation and software filtering. The trigger circuit controls the corresponding loop to realize temperature control and protection. The whole loop is a closed loop control system. The system works stably and reliably, the controller has a self-protection function, the microprocessor outputs D microprocessor to monitor the abnormal change of the circuit at any time in the change process of the monitoring circuit, and when the sampling circuit finds abnormal conditions such as abnormal voltage change, current overload, on-off (ignition phenomenon) and the like, the microprocessor can make judgment at once and turn off the output to realize circuit protection.
Example 2: on the basis of example 1: the thyristor Q1 is a single-phase thyristor. The thyristor Q2 is a single-phase thyristor. Diode ZD1 is a zener diode.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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. A single-wire temperature control system of an electric heating appliance comprises a microprocessor controller, a thyristor Q1, a resistor R1 and a capacitor C1, wherein one end of the resistor R1 is connected with the capacitor C1, the resistor R1, the anode of the thyristor Q1 and a fuse F1, the other point of the fuse F1 is connected with a mains supply L through a switch K1-1, the other end of the resistor R1 is connected with the other end of the capacitor C1 and the resistor R1, the other end of the resistor R1 is connected with the anode of a diode D1 and the cathode of the diode ZD1, the cathode of the diode D1 is connected with the capacitor C1, the resistor R1, the cathode of the resistor R1 is connected with the cathode of the diode D1, the cathode of the diode D1 is connected with the cathode of the diode D1, the anode of the resistor R1 is connected with the microprocessor controller, the cathode of the resistor ZD1 is connected with the cathode of the diode D1, the other end of the resistor R7 is connected with a capacitor C4 and the microprocessor controller, the control electrode of the thyristor Q1 is connected with the cathode of a diode D3, the anode of the diode D3 is connected with the microprocessor controller through a resistor R5, the cathode of the thyristor Q2 is connected with the cathode of a diode D6 and the cathode of a diode D8, the anode of a diode D6 is connected with the other end of a resistor R9 and a resistor R10, the other end of the resistor R10 is connected with the capacitor C5 and the microprocessor controller, the control electrode of the thyristor Q2 is connected with the cathode of a diode D5, the anode of a diode D5 is connected with the microprocessor controller through a resistor R8, the anode of the diode ZD1 is connected with the other end of a capacitor C2, the other end of a capacitor C3 and the, one end of a commercial power N diode D7, the other end of a capacitor C5 and the other end of a diode D8, a first-zone heating wire is connected in parallel with two ends of the diode D7, and a second-zone heating wire is connected in parallel with two ends of the diode D8.
2. The single-wire temperature control system for electric heating appliances according to claim 1, wherein the microprocessor controller is further connected with a temperature alarm display part.
3. The single-wire temperature control system for electric heating appliances according to claim 1, wherein the thyristor Q1 is a single-phase thyristor.
4. The single-wire temperature control system for electric heating appliances according to claim 1, wherein the thyristor Q2 is a single-phase thyristor.
5. The single-wire temperature control system of an electric heating appliance according to any one of claims 1 to 4, wherein the diode ZD1 is a Zener diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022492372.4U CN213122730U (en) | 2020-11-02 | 2020-11-02 | Single-wire temperature control system of electric heating appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022492372.4U CN213122730U (en) | 2020-11-02 | 2020-11-02 | Single-wire temperature control system of electric heating appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213122730U true CN213122730U (en) | 2021-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022492372.4U Active CN213122730U (en) | 2020-11-02 | 2020-11-02 | Single-wire temperature control system of electric heating appliance |
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|---|---|
| CN (1) | CN213122730U (en) |
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- 2020-11-02 CN CN202022492372.4U patent/CN213122730U/en active Active
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