CN213846647U - Intrinsic safety circuit of improved explosion-proof air conditioner touch key - Google Patents
Intrinsic safety circuit of improved explosion-proof air conditioner touch key Download PDFInfo
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- CN213846647U CN213846647U CN202023263715.6U CN202023263715U CN213846647U CN 213846647 U CN213846647 U CN 213846647U CN 202023263715 U CN202023263715 U CN 202023263715U CN 213846647 U CN213846647 U CN 213846647U
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- proof air
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Abstract
The utility model provides an intrinsic safety circuit of an improved explosion-proof air conditioner touch key, which comprises a fast fuse electrically connected with a safety zone mainboard, a current-limiting resistor electrically connected with a danger zone key mainboard and a voltage-stabilizing diode electrically connected with the ground, wherein the fast fuse, the current-limiting resistor and the voltage-stabilizing diode are assembled and installed on a circuit board; the fast fuse is used for limiting the voltage higher than a rated value from being connected into the signal input end in series; the current limiting resistor is used for limiting the current exceeding the rated value caused by the short circuit of the signal output end; the voltage stabilizing diode is used for limiting the voltage exceeding the rated value in the circuit, the circuit board is used for installing the quick fuse, the current limiting resistor and the voltage stabilizing diode, and the circuit board is installed in the explosion-proof air conditioner mainboard explosion-proof box. Through this ann's circuit of explosion-proof air conditioner of improved generation touch button, utilize this ann's circuit to regulate and control explosion-proof air conditioner according to the touch button that uses explosion-proof air conditioner, ensure explosion-proof air conditioner's reliable regulation and control.
Description
Technical Field
The utility model belongs to the technical field of air conditioner touch button, in particular to this ampere of circuit of explosion-proof air conditioner touch button of improved generation.
Background
The explosion-proof air conditioner is widely applied to inflammable and explosive places in the industries of petroleum, chemical engineering, coal, medicine, drilling and mining and the like. With the development of national economy and the improvement of safety requirements, the requirement on the comfort level of the working environment in an explosive dangerous environment is gradually improved, so that the using amount of the explosion-proof air conditioner is increased year by year. At present, panel operation of the explosion-proof air conditioner is mainly operated by a mechanical button of a panel of the air conditioner, and the operation mode easily causes failure of the mechanical button and is not beneficial to popularization of new technology of the explosion-proof air conditioner. At present, no proper solution is provided for the touch key of the explosion-proof air conditioner.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an to the not enough of prior art, provide an explosion-proof air conditioner of improved generation touch button's this ampere of circuit, utilize this ampere of circuit can be according to the touch button regulation and control explosion-proof air conditioner that uses explosion-proof air conditioner, ensure explosion-proof air conditioner's reliable regulation and control.
In order to solve the technical problem, the utility model discloses a technical scheme is: the improved intrinsic safety circuit of the anti-explosion air conditioner touch key comprises a fast fuse electrically connected with a safety zone main board, a current limiting resistor electrically connected with a danger zone key main board and a voltage stabilizing diode electrically connected with the ground, wherein the fast fuse, the current limiting resistor and the voltage stabilizing diode are mounted on a circuit board in a combined mode.
Further, the fast fuse is used for limiting the voltage which is higher than the rated value and is input into the signal input end in series.
Further, the current limiting resistor is used for limiting the current exceeding the rated value caused by the short circuit of the signal output end.
Further, the zener diode is used to limit the voltage in the circuit that exceeds a rated value.
Furthermore, the circuit board is used for installing a quick fuse, a current-limiting resistor and a voltage stabilizing diode and is matched with a combination of a connecting circuit, and the circuit board is installed in the explosion-proof air conditioner main board explosion-proof box.
Compared with the prior art, the beneficial effects of the utility model are as follows: improved generation explosion-proof air conditioner touch button's this ampere of circuit, through with explosion-proof air conditioner central control mainboard and touch button mainboard connection, utilize fast acting fuse's overcurrent fusing ability, utilize the limiting capacity of current-limiting resistor to the electric current, utilize the voltage stabilizing cabinet to the limiting capacity of voltage, realize explosion-proof air conditioner touch button's safe, reliable operation. The explosion-proof performance and the regulation and control performance of explosion-proof air conditioner have been ensured to this ampere of circuit of explosion-proof air conditioner of improved generation touch button, effectual performance explosion-proof air conditioner's the function of adjusting the temperature, explosion-proof performance of explosion-proof air conditioner has been ensured simultaneously.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of an intrinsic safety circuit of an improved explosion-proof air conditioner touch key of the present invention;
fig. 2 is a schematic view of the installation mode structure of the intrinsic safety circuit of the improved explosion-proof air conditioner touch key of the present invention.
In the figure: 1. a fast fuse; 2. a current limiting resistor; 3. a voltage regulator diode; 4. a circuit board; 5. explosion-proof air conditioner mainboard flame proof box.
Detailed Description
For a better understanding of the present invention, the contents of the present invention will be further clarified below by referring to examples, but the present invention is not limited to the following examples. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.
As shown in fig. 1-2, an intrinsically safe circuit of an improved touch key of an explosion-proof air conditioner comprises a fast fuse 1 electrically connected with a safety zone main board, a current limiting resistor 2 electrically connected with a danger zone key main board, a voltage stabilizing diode 3 electrically connected with the ground, and a circuit board 4 for mounting the fast fuse 1, the current limiting resistor 2 and the voltage stabilizing diode 3.
The fast fuse 1, the current limiting resistor 2 and the voltage stabilizing diode 3 are subjected to actual measurement of various parameters, precise calculation and multi-specification multi-group experiment comparison to determine the parameters. When high voltage from a safety area passes through the fast fuse 1, the high voltage is connected with the ground through the voltage stabilizing diode 3, so that the current passing through the fast fuse 1 is rapidly increased to exceed the rated current of the fast fuse 1, the fast fuse 1 is fused, and a danger signal of the safety area cannot enter a danger area; when the line of the danger zone is short-circuited, the short-circuit current is limited below the rated current through the current limiting resistor, so that the current in the danger zone is always kept below the rated current. It is ensured that no signals are present in the hazard area which could lead to a hazard.
Cause explosion-proof air conditioner normally work after preventing this ampere of circuit protect function action all the way, the utility model discloses an this ampere of circuit is many branches this ampere of circuit, is convenient for change the branch road that the protection triggered.
The circuit board 4 is installed in the explosion-proof air conditioner mainboard explosion-proof box 5.
According to the explosion-proof sign of country, danger signal does not allow to appear in the explosive environment, the utility model discloses an this ampere of circuit can be in the dangerous signal entering explosive environment of effectual restriction safety zone.
The utility model discloses an this ampere of circuit of explosion-proof air conditioner of improved generation touch button requires independent design production, with strong points according to explosion-proof air conditioner's circuit parameter. The core of the explosion-proof air conditioner is that the purpose of limiting signal energy in an explosive environment is realized by calculating the parameters of a fast fuse, a current-limiting resistor and a voltage-stabilizing tube according to the circuit parameter requirements of the explosion-proof air conditioner, the performance is reliable, and the requirements of special use environments are met.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. The utility model provides an intrinsic safe circuit of explosion-proof air conditioner of improved generation touch button which characterized in that: the safety protection device comprises a fast fuse (1) electrically connected with a safety zone main board, a current limiting resistor (2) electrically connected with a danger zone key main board and a voltage stabilizing diode (3) electrically connected with the ground, wherein the fast fuse (1), the current limiting resistor (2) and the voltage stabilizing diode (3) are installed on a circuit board (4) in a combined mode.
2. The intrinsically safe circuit of the improved explosion-proof air conditioner touch key as set forth in claim 1, characterized in that: the fast fuse (1) is used for limiting the voltage higher than a rated value from being connected into the signal input end in series.
3. The intrinsically safe circuit of the improved explosion-proof air conditioner touch key as set forth in claim 2, characterized in that: the current limiting resistor (2) is used for limiting the current exceeding the rated value caused by the short circuit of the signal output end.
4. The intrinsically safe circuit of the improved explosion-proof air conditioner touch key as set forth in claim 3, characterized in that: the zener diode (3) is used to limit the voltage in the circuit above a nominal value.
5. The intrinsically safe circuit of the improved explosion-proof air conditioner touch key as set forth in claim 4, characterized in that: the circuit board (4) is used for installing a quick fuse, a current-limiting resistor and a voltage stabilizing diode and is matched with a combination body of a connecting circuit, and the circuit board (4) is installed in an explosion-proof air conditioner main board explosion-proof box (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023263715.6U CN213846647U (en) | 2020-12-30 | 2020-12-30 | Intrinsic safety circuit of improved explosion-proof air conditioner touch key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023263715.6U CN213846647U (en) | 2020-12-30 | 2020-12-30 | Intrinsic safety circuit of improved explosion-proof air conditioner touch key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213846647U true CN213846647U (en) | 2021-07-30 |
Family
ID=77001724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023263715.6U Active CN213846647U (en) | 2020-12-30 | 2020-12-30 | Intrinsic safety circuit of improved explosion-proof air conditioner touch key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213846647U (en) |
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2020
- 2020-12-30 CN CN202023263715.6U patent/CN213846647U/en active Active
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