CN219981059U - Emergency control system of heating table - Google Patents
Emergency control system of heating table Download PDFInfo
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- CN219981059U CN219981059U CN202320678160.6U CN202320678160U CN219981059U CN 219981059 U CN219981059 U CN 219981059U CN 202320678160 U CN202320678160 U CN 202320678160U CN 219981059 U CN219981059 U CN 219981059U
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- control system
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- heating
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 56
- 230000002457 bidirectional effect Effects 0.000 description 26
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 11
- 239000010703 silicon Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of intelligent home, in particular to an emergency control system of a heating table, which comprises a heating body and a plurality of groups of switch circuits, wherein the input end of each group of switch circuits is commonly connected with the input end of a live wire, and the output end of each group of switch circuits is commonly connected with the input end of the heating body; the public end of the heating element is connected with the zero line input end; each group of switch circuits commonly receives the alternating current sent by the input end of the live wire and conducts the alternating current in the same half period of the alternating current so that the heating body outputs according to the half power of the alternating current; the emergency control system provided by the utility model can realize emergency heating of the heating table.
Description
Technical Field
The utility model relates to the technical field of intelligent home, in particular to an emergency control system of a heating table.
Background
In use, the heating table can influence heating if power cannot be supplied due to short circuit or open circuit, so that an emergency heating scheme is needed to ensure heating stability.
Disclosure of Invention
The present utility model provides an emergency control system for a heating table, which solves one or more technical problems existing in the prior art, and at least provides a beneficial choice or creation condition.
In order to achieve the above object, the present utility model provides the following technical solutions:
an emergency control system of a heating table comprises a heating body and a plurality of groups of switch circuits, wherein the input end of each group of switch circuits is commonly connected with the input end of a live wire, and the output end of each group of switch circuits is commonly connected with the input end of the heating body; the public end of the heating element is connected with the zero line input end;
each group of switch circuits commonly receives the alternating current sent by the input end of the live wire and conducts the alternating current in the same half period of the alternating current so that the heating body outputs according to the half power of the alternating current.
Further, the switching circuits are in 4 groups, and the output end of each group of switching circuits is connected with a trigger circuit.
Further, the switching circuit comprises a silicon controlled rectifier and a diode, wherein the input end of the silicon controlled rectifier is connected with the input end of a live wire, and the output end of the silicon controlled rectifier is connected with the cathode of the diode.
Further, the silicon controlled rectifier is a bidirectional silicon controlled rectifier, the bidirectional silicon controlled rectifier is provided with a first main terminal, a second main terminal and a grid terminal, the first main terminal is connected with a live wire input end, the second main terminal is connected with a cathode of the diode, and the grid terminal is open-circuited.
Further, the trigger circuit is connected with the output end of the second main terminal of the bidirectional thyristor in the switch circuit.
Further, a trigger circuit in the first group of switch circuits controls the turn-on of the bidirectional thyristors in the first quadrant.
Further, a trigger circuit in the second group of switch circuits controls the turn-on of the bidirectional thyristors in the second quadrant.
Further, a trigger circuit in the third group of switch circuits controls the turn-on of the bidirectional thyristors in the third quadrant.
Further, a trigger circuit in the fourth group of switch circuits controls the turn-on of the bidirectional thyristors in the fourth quadrant.
Further, the multiple groups of switch circuits are arranged on the heating table.
The beneficial effects of the utility model are as follows: the utility model provides an emergency control system of a heating table, which is characterized in that an emergency control system is arranged on the heating table, so that on the premise of ensuring normal operation of a switch circuit, even if other temperature control circuits are damaged, the emergency control system can control a heating body to output according to half power of alternating current, thereby achieving the effect of emergency heating. The emergency control system provided by the utility model can realize emergency heating of the heating table.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic circuit diagram of an emergency control system for a heating table according to an embodiment of the present utility model.
Detailed Description
Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, if there is a word description such as "a plurality" or the like, the meaning of a plurality is one or more, and the meaning of a plurality is two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1, an embodiment of the present utility model provides an emergency control system for a heating table, where the emergency control system includes a heating element TP3 and a plurality of groups of switch circuits, input ends of each group of switch circuits are commonly connected to a live wire input end L, and output ends of each group of switch circuits are commonly connected to an input end of the heating element TP 3; the public end of the heating element TP3 is connected with the zero line input end N;
each group of switch circuits commonly receives the alternating current sent by the live wire input end L and conducts the alternating current in the same half period of the alternating current, so that the heating element TP3 outputs according to half power of the alternating current.
The working principle of the utility model is as follows:
because each group of switch circuits commonly receives the live wire input end L, each group of switch circuits can be guaranteed to receive the alternating current sent by the live wire input end L according to the same period, the switch circuits are controlled to be simultaneously on-off, and the alternating current is output in the same half period, so that the heating element TP3 is output according to the half power of the alternating current.
An emergency control system is arranged on the heating table, and under the premise of ensuring normal operation of the switch circuit, even if other temperature control circuits are damaged, the heating element TP3 can be controlled to output according to half power of alternating current through the emergency control system, so that the effect of emergency heating is achieved.
As a preferable example of the above embodiment, the switching circuits are 4 groups, and the output terminal of each group of switching circuits is connected with a trigger circuit.
As a preferable mode of the above embodiment, the switching circuit includes a thyristor and a diode, and an input terminal of the thyristor is connected to the live wire input terminal L, and an output terminal of the thyristor is connected to a cathode of the diode.
It should be noted that a Silicon Controlled Rectifier (SCR) is a high-power electrical device, which is also called a thyristor. It has the advantages of small volume, high efficiency, long service life, etc. In an automatic control system, the device can be used as a high-power driving device to control high-power equipment by using a low-power control. The method is widely applied to an AC/DC motor speed regulation system, a power regulation system and a follow-up system.
The silicon controlled rectifier is divided into a unidirectional silicon controlled rectifier and a bidirectional silicon controlled rectifier. The TRIAC is also called TRIAC for short. The bidirectional thyristor is structurally equivalent to two unidirectional thyristors which are connected in reverse, and has a bidirectional conduction function. The on-off state is determined by the control electrode G. Positive pulse is added to the control electrode G to make it conduct positively, and negative pulse is added to the control electrode G to make it conduct reversely. The device has the advantages of simple control circuit and no reverse voltage withstand problem, so the device is particularly suitable for being used as an alternating current contactless switch.
In the emergency control system, due to the effect of the diode, half of the positive brown wave waveform of the alternating current cannot be output, and when the diode is conducted, the alternating current passes through the diode in the same period of time, so that the half-reduction function of the output power is achieved; when heating, the heating element TP3 outputs half power, and the heating effect can be achieved.
As a preferable example of the above embodiment, the triac is a triac having a first main terminal, a second main terminal and a gate terminal, the first main terminal being connected to the live input terminal L, the second main terminal being connected to the cathode of the diode, the gate terminal being open-circuited.
It should be noted that, the bidirectional thyristors may be regarded as an integration of a pair of common thyristors connected in anti-parallel, and the working principle is the same as that of the common unidirectional thyristors. The bidirectional thyristor is provided with a first main terminal, a second main terminal and a grid terminal, and the grid terminal enables the device to be triggered and conducted in the positive and negative directions of the main electrode, so that the bidirectional thyristor has symmetrical volt-ampere characteristics in the 1 st quadrant and the 3 rd quadrant. The bidirectional silicon controlled gate terminal plus positive and negative trigger pulses can trigger and conduct the pipe, so that four trigger modes exist. The bidirectional thyristor is used normally, the main parameters of the bidirectional thyristor need to be mastered quantitatively, the bidirectional thyristor is selected appropriately, and corresponding measures are taken to meet the requirements of all the parameters.
Preferably, the trigger circuit is connected to the output of the second main terminal of the triac in the switching circuit.
Preferably, the trigger circuits in the first set of switch circuits control the triac to conduct in the first quadrant.
Preferably, the trigger circuits in the second set of switch circuits control the triac to conduct in the second quadrant.
As a preferred embodiment of the above embodiment, the trigger circuits in the third set of switch circuits control the triac to conduct in the third quadrant.
As a preferred embodiment of the above embodiment, the trigger circuits in the fourth set of switch circuits control the triac to conduct in the fourth quadrant.
In the embodiment provided by the utility model, the first group of switch circuits comprises a first bidirectional thyristor T1 and a first diode D1, wherein a first main terminal of the first bidirectional thyristor T1 is connected with a live wire input end L, and a second main terminal is respectively connected with a cathode of the first diode D1 and a first trigger circuit CP1; the second group of switch circuits comprises a second bidirectional thyristor T2 and a second diode D2, a first main terminal of the second bidirectional thyristor T2 is connected with a live wire input end L, and a second main terminal is respectively connected with a cathode of the second diode D2 and a second trigger circuit CP2; the third group of switch circuits comprises a third bidirectional triode thyristor T3 and a third diode D3, a first main terminal of the third bidirectional triode thyristor T3 is connected with a live wire input end L, and a second main terminal of the third bidirectional triode thyristor T3 is respectively connected with a cathode of the third diode D3 and a third trigger circuit CP3; the fourth group of switch circuits comprises a fourth bidirectional thyristor T4 and a fourth diode D4, a first main terminal of the fourth bidirectional thyristor T4 is connected with a live wire input end L, and a second main terminal is respectively connected with a cathode of the fourth diode D4 and a fourth trigger circuit CP4. By setting the first trigger circuit CP1, the second trigger circuit CP2, the third trigger circuit CP3, and the fourth trigger circuit CP4, the continuous conduction of the triac can be ensured.
Preferably, the plurality of sets of switch circuits are arranged on the heating table.
The embodiments described in the embodiments of the present utility model are for more clearly describing the technical solutions of the embodiments of the present utility model, and do not constitute a limitation on the technical solutions provided by the embodiments of the present utility model, and those skilled in the art can know that, with the evolution of technology and the appearance of new application scenarios, the technical solutions provided by the embodiments of the present utility model are equally applicable to similar technical problems.
It will be appreciated by persons skilled in the art that the embodiments of the utility model are not limited by the illustrations, and that more or fewer steps than those shown may be included, or certain steps may be combined, or different steps may be included.
The apparatus embodiments described above are merely illustrative, in that the circuitry illustrated as separate components may or may not be physically separate, i.e., may be located in one place, or may be distributed over multiple network circuits. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Those of ordinary skill in the art will appreciate that all or some of the steps of the methods, systems, functional modules/circuits in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof.
The terms "first," "second," "third," "fourth," and the like in the description of the utility model and in the above figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or circuits is not necessarily limited to those steps or circuits that are expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that in the present utility model, "at least one (item)" means one or more, and "a plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
In the several embodiments provided by the present utility model, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the above-described circuit division is merely a logical function division, and there may be other division manners in which a plurality of circuits or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or circuits, which may be in electrical, mechanical or other form.
The circuits described above as separate components may or may not be physically separate, and components shown as circuits may or may not be physical circuits, i.e., may be located in one place, or may be distributed over multiple network circuits. Some or all of the circuits may be selected according to actual needs to achieve the purpose of the embodiment.
In addition, each functional circuit in each embodiment of the present utility model may be integrated in one processing circuit, or each circuit may exist alone physically, or two or more circuits may be integrated in one circuit. The integrated circuit may be implemented in hardware or in software functional circuits.
The preferred embodiments of the present utility model have been described above with reference to the accompanying drawings, and are not thereby limiting the scope of the claims of the embodiments of the present utility model. Any modifications, equivalent substitutions and improvements made by those skilled in the art without departing from the scope and spirit of the embodiments of the present utility model shall fall within the scope of the claims of the embodiments of the present utility model. While the present disclosure has been described in considerable detail and with particularity with respect to the several illustrated embodiments, it is not intended to be limited to any such detail or embodiments or any particular embodiment, but rather should be construed as providing broad interpretation of such claims by reference to the appended claims, taking into account the prior art to thereby effectively encompass the intended scope of the present disclosure. Furthermore, the foregoing description of the utility model has been presented in terms of embodiments foreseen by the inventor for the purpose of providing a enabling description for enabling the enabling description to be available, notwithstanding that insubstantial changes in the utility model, not presently foreseen, may nonetheless represent equivalents thereto.
Claims (10)
1. The emergency control system of the heating table is characterized by comprising a heating body and a plurality of groups of switch circuits, wherein the input end of each group of switch circuits is commonly connected with the input end of a live wire, and the output end of each group of switch circuits is commonly connected with the input end of the heating body; the public end of the heating element is connected with the zero line input end;
each group of switch circuits commonly receives the alternating current sent by the input end of the live wire and conducts the alternating current in the same half period of the alternating current so that the heating body outputs according to the half power of the alternating current.
2. An emergency control system for a heating table according to claim 1, wherein the switching circuits are 4 groups, and the output end of each group of switching circuits is connected with a trigger circuit.
3. An emergency control system for a heating table according to claim 2, wherein the switching circuit comprises a thyristor and a diode, the input end of the thyristor is connected with the live wire input end, and the output end of the thyristor is connected with the cathode of the diode.
4. A heating table emergency control system according to claim 3, wherein the thyristor is a triac having a first main terminal, a second main terminal and a gate terminal, the first main terminal being connected to the hot input, the second main terminal being connected to the cathode of the diode, the gate terminal being open circuit.
5. The emergency control system of a heating table according to claim 4, wherein the trigger circuit is connected to an output terminal of the second main terminal of the triac in the switching circuit.
6. The emergency control system of a heating table of claim 4, wherein the triggering circuit in the first set of switching circuits controls the triac to conduct in the first quadrant.
7. The emergency control system of a heating table of claim 6, wherein the triggering circuit in the second set of switching circuits controls the triac to conduct in the second quadrant.
8. The emergency control system of a heating table according to claim 7, wherein the trigger circuits in the third set of switch circuits control the triac to conduct in the third quadrant.
9. The emergency control system of a heating table according to claim 8, wherein the trigger circuits in the fourth set of switch circuits control the triac to conduct in the fourth quadrant.
10. The emergency control system of a heating table of claim 1, wherein the plurality of sets of switching circuits are disposed on the heating table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320678160.6U CN219981059U (en) | 2023-03-29 | 2023-03-29 | Emergency control system of heating table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320678160.6U CN219981059U (en) | 2023-03-29 | 2023-03-29 | Emergency control system of heating table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219981059U true CN219981059U (en) | 2023-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320678160.6U Active CN219981059U (en) | 2023-03-29 | 2023-03-29 | Emergency control system of heating table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219981059U (en) |
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2023
- 2023-03-29 CN CN202320678160.6U patent/CN219981059U/en active Active
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