Explosion-proof piezoresistor
By using small heat dissipation fans driven by arc-shaped blocks and thermoelectric modules in explosion-proof varistors, combined with the design of nuts and rods, the problems of heat dissipation difficulties and explosion protection in closed designs are solved, and effective cooling is achieved and protection effect.
Patent Information
- Application Number
- CN202421001650.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-10
AI Technical Summary
In the closed design of existing explosion-proof varistors, heat is difficult to dissipate, resulting in high heat accumulation and equipment damage.
The small heat dissipation fan and thermoelectric module are used to connect the arc-shaped card blocks to elastically connect. The heat dissipation fan is driven to cool down through the thermoelectric module generation, and the nut and rod body design ensure that the device protects parts when explodes and avoids crashing.
It effectively reduces heat accumulation, protects the varistor body, and avoids damage caused by high heat and parts crash after explosion.
Smart Images
Figure CN222281699U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of varistor, in particular to an explosion-proof varistor. Background Art
[0002] A varistor is a voltage-limiting component that is sensitive to voltage changes. Its characteristics are: at a specified temperature, when the voltage exceeds a certain critical value, its resistance will decrease sharply, and the current passing through it will increase sharply. The voltage and current are not linearly related. Therefore, the varistor is also called a nonlinear resistor.
[0003] The Chinese patent with application number CN202320580780.6 discloses an explosion-proof shell of a high heat dissipation varistor, which relates to the technical field of varistor, including an upper shell and a lower shell movably connected to the upper shell, and a receiving cavity is provided on the side where the upper shell and the lower shell are close to each other, and the upper shell and the lower shell are both arranged in a rectangular shape as a whole, and heat dissipation holes are provided on the upper shell and the lower shell; a buffer is provided in the receiving cavity of the lower shell, and the buffer is used to provide horizontal buffer protection for the varistor; a limiter is provided on the lower shell, and the limiter includes a moving block, and the moving block is vertically slidably installed on the outer side wall of the lower shell. The utility model has a larger space of the receiving area formed between the upper shell and the lower shell by setting a rectangular upper shell and a rectangular lower shell than the prior art.
[0004] In the above solution, the closed design between the upper shell and the lower shell can provide explosion-proof protection for the varistor, but it may also cause the problem of difficulty in dissipating heat. Relying solely on heat dissipation holes for heat dissipation cannot effectively reduce the heat generated by the varistor. Utility Model Content
[0005] 1. Technical issues to be resolved
[0006] In view of the problems existing in the prior art, the utility model provides an explosion-proof varistor.
[0007] (II) Technical solution
[0008] To achieve the above purpose, the utility model is implemented through the following technical solutions: an explosion-proof varistor, including a shell and an explosion-proof component, a heat dissipation component is arranged inside the shell, the heat dissipation component includes an arc-shaped block arranged inside the shell, a first spring is elastically connected between the arc-shaped block and the side wall of the shell, a circular shell is arranged at the shell port, a mounting plate is fixedly installed on the outer surface of the circular shell, and a small heat dissipation fan is rotatably connected to the center of the mounting plate.
[0009] As a preferred solution of the explosion-proof varistor described in the utility model, a through groove is opened between the inner and outer walls of the circular shell, and the small heat dissipation fan corresponds to the through groove.
[0010] By adopting the above technical solution, an electric wire is installed between the small heat dissipation fan and the thermoelectric module, and the thermoelectric module is fitted with the outer surface of the varistor body.
[0011] As a preferred solution of the explosion-proof varistor described in the utility model, the inner wall of the circular shell is elastically connected to a second spring, one end of the second spring is installed with a thermoelectric module, and a heat dissipation hole is opened between the inner and outer walls of the shell.
[0012] By adopting the above technical solution, the heat dissipation holes can effectively reduce the heat accumulation caused by high heat, and at the same time can greatly reduce the problem of damage to the varistor body caused by high heat.
[0013] As a preferred solution of the explosion-proof varistor described in the utility model, the explosion-proof component includes a varistor body installed inside a shell, and slots are provided inside the shell and the circular shell.
[0014] By adopting the above technical solution, the provided rod body can connect the circular shell with the shell in series, and the cooperation between the provided nut and the thread can make the shell body and the circular shell connected more tightly.
[0015] As a preferred solution of the explosion-proof varistor of the utility model, a rod body is rotatably connected inside the slot, one end of the rod body is provided with a thread, and a nut is provided at the back of the slot.
[0016] By adopting the above technical solution, after the provided nut is loosened, it is convenient for the user to remove the circular shell for maintenance.
[0017] As a preferred solution of the explosion-proof varistor described in the utility model, the nut is screwed on the outer surface of the thread, and a knob is fixedly installed on the top of the rod body.
[0018] By adopting the above technical solution, the provided knob can facilitate the user to tighten and loosen the rod body, making it more convenient for the user to remove the shell.
[0019] Three beneficial effects
[0020] The utility model provides an explosion-proof varistor, which has the following beneficial effects:
[0021] 1. The thermoelectric module generates electricity when it receives the heat generated by the varistor body, causing the small cooling fan to rotate. The fan can directly cool the varistor body after the rotation through the slot, avoiding the problem of heat being difficult to dissipate. Relying solely on heat dissipation holes for heat dissipation cannot effectively reduce the problem of heat generated by the varistor.
[0022] 2. The rod body is rotated by rotating the nut, and the rotation of the rod body fixes the nut and one end of the rod body, so that the device body is protected when the varistor body explodes, avoiding problems such as parts flying after the explosion. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0025] Figure 2 It is a schematic diagram of the overall side structure of the utility model.
[0026] Figure 3 This is a detailed diagram of the interior of the heat dissipation component of the utility model.
[0027] Figure 4 This utility model Figure 1 Enlarged view of point A in .
[0028] Figure 5 This utility model Figure 2 Enlarged view of point B in .
[0029] In the figure, 1, shell; 2, explosion-proof component; 21, varistor body; 22, knob; 23, rod; 24, thread; 25, slot; 26, nut; 3, heat dissipation component; 31, heat dissipation hole; 32, second spring; 33, thermoelectric module; 34, arc-shaped block; 35, first spring; 36, mounting plate; 37, small heat dissipation fan; 38, through slot; 39, round shell. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0031] Example 1
[0032] Reference Figures 1 to 5, is the first embodiment of the utility model, which provides an explosion-proof varistor, including a shell 1 and an explosion-proof component 2. A heat dissipation component 3 is arranged inside the shell 1. The heat dissipation component 3 includes an arc-shaped block 34 arranged inside the shell 1, and a first spring 35 is elastically connected between the arc-shaped block 34 and the side wall of the shell 1. A circular shell 39 is arranged at the port of the shell 1, and a mounting plate 36 is fixedly installed on the outer surface of the circular shell 39. A small heat dissipation fan 37 is rotatably connected to the center of the mounting plate 36.
[0033] Specifically, a through groove 38 is opened between the inner and outer walls of the circular shell 39, and the small heat dissipation fan 37 corresponds to the through groove 38. The inner wall of the circular shell 39 is elastically connected to the second spring 32, and a thermoelectric module 33 is installed at one end of the second spring 32. A heat dissipation hole 31 is opened between the inner and outer walls of the shell 1.
[0034] Furthermore, the user places the varistor body 21 inside the shell 1, and the arc-shaped block 34 drives the first spring 35 to contract inward under the pressure of the varistor body 21, so that the arc-shaped block 34 can be limited and fixed according to the width of the varistor body 21 to prevent the varistor body 21 from shaking inside the shell 1. At this time, the circular shell 39 and the shell 1 are aligned with each other, and the thermoelectric module 33 and the outer surface of the varistor body 21 are fitted together, and then the rod 23 is rotated by rotating the nut 26. The rotation of the rod 23 fixes the nut 26 and one end of the rod 23, so that the device body is protected when the varistor body 21 explodes, avoiding problems such as parts flying after the explosion. The thermoelectric module 33 generates electricity when it is subjected to the heat generated by the varistor body 21, causing the small heat dissipation fan 37 to rotate. The through slot 38 provided allows the small heat dissipation fan 37 to directly cool the varistor body 21 after rotation, avoiding the problem of heat being difficult to dissipate. Relying only on the heat dissipation holes 31 for heat dissipation cannot effectively reduce the problem of heat generated by the varistor.
[0035] Example 2
[0036] Reference Figures 1 to 5 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment. The explosion-proof component 2 includes a varistor body 21 installed inside the shell 1, and slots 25 are provided inside the shell 1 and the circular shell 39.
[0037] Specifically, the rod body 23 is rotatably connected inside the slot 25 , a thread 24 is provided at one end of the rod body 23 , a nut 26 is provided at the back of the slot 25 , the nut 26 is screwed on the outer surface of the thread 24 , and a knob 22 is fixedly installed on the top of the rod body 23 .
[0038] The rod 23 is further rotated by rotating the nut 26, and the rotation of the rod 23 fixes the nut 26 to one end of the rod 23, so that the device body is protected when the varistor body 21 explodes, avoiding problems such as parts flying after the explosion.
[0039] Working principle: the user puts the varistor body 21 into the shell 1, and the arc-shaped block 34 drives the first spring 35 to contract inward under the pressure of the varistor body 21, so that the arc-shaped block 34 can be limited and fixed according to the width of the varistor body 21 to prevent the varistor body 21 from shaking inside the shell 1. At this time, the circular shell 39 and the shell 1 are aligned with each other, and the thermoelectric module 33 and the outer surface of the varistor body 21 are fitted together, and then the rod 23 is rotated by rotating the nut 26. The rotation of the rod 23 fixes the nut 26 and one end of the rod 23, so that the device body is protected when the varistor body 21 explodes, avoiding problems such as parts flying after the explosion. The thermoelectric module 33 generates electricity when it is subjected to the heat generated by the varistor body 21, so that the small heat dissipation fan 37 rotates. The through slot 38 allows the small heat dissipation fan 37 to directly cool the varistor body 21 after rotation, avoiding the problem of heat being difficult to dissipate. Relying only on the heat dissipation holes 31 for heat dissipation cannot effectively reduce the problem of heat generated by the varistor.
[0040] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.
Claims
1. An explosion-proof varistor, comprising a housing (1) and an explosion-proof component (2), characterized in that: A heat dissipation component (3) is arranged inside the housing (1); The heat dissipation assembly (3) comprises an arc-shaped clamping block (34) arranged inside the shell (1), a first spring (35) being elastically connected between the arc-shaped clamping block (34) and the side wall of the shell (1), a circular shell (39) being arranged at the port of the shell (1), a mounting plate (36) being fixedly mounted on the outer surface of the circular shell (39), and a small heat dissipation fan (37) being rotatably connected at the center of the mounting plate (36).
2. The explosion-proof varistor according to claim 1, characterized in that: A through slot (38) is provided between the inner and outer walls of the circular shell (39), and the small heat dissipation fan (37) corresponds to the through slot (38).
3. The explosion-proof varistor according to claim 2, characterized in that: The inner wall of the circular shell (39) is elastically connected to a second spring (32), one end of the second spring (32) is mounted with a thermoelectric module (33), and a heat dissipation hole (31) is provided between the inner and outer walls of the shell (1).
4. The explosion-proof varistor according to claim 1, characterized in that: The explosion-proof component (2) comprises a varistor body (21) installed inside a housing (1), and slots (25) are provided inside both the housing (1) and the circular shell (39).
5. The explosion-proof varistor according to claim 4, characterized in that: The slot (25) is rotatably connected to a rod body (23) inside, one end of the rod body (23) is provided with a thread (24), and a nut (26) is provided at the back of the slot (25).
6. The explosion-proof varistor according to claim 5, characterized in that: The nut (26) is screwed onto the outer surface of the thread (24), and a knob (22) is fixedly mounted on the top of the rod body (23).