CN115207891A - Surge protection device with thermal protection device and failure alarm function - Google Patents
Surge protection device with thermal protection device and failure alarm function Download PDFInfo
- Publication number
- CN115207891A CN115207891A CN202210818521.2A CN202210818521A CN115207891A CN 115207891 A CN115207891 A CN 115207891A CN 202210818521 A CN202210818521 A CN 202210818521A CN 115207891 A CN115207891 A CN 115207891A
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- Prior art keywords
- fixedly connected
- thermal protection
- explosion
- proof
- subassembly
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/044—Physical layout, materials not provided for elsewhere
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The invention provides a surge protection device with a thermal protection device and a failure alarm function, and relates to the technical field of electronic components. This take surge protector of hot protection device and failure alarm function, including fixed subassembly, hinder and explode subassembly and thermal protection subassembly, the subassembly is exploded to the inside fixedly connected with of fixed subassembly, hinder and explode the inside fixedly connected with thermal protection subassembly of subassembly, PCB circuit board top center fixed connection copper heat conduction seat. No current flows through on the normal during operation instruction return circuit, after through the overheated disconnection of temperature fuse electric current abnormal temperature fuse, the electric current flows through light alarm, light alarm lights and plays the effect of reporting to the police, thereby provide and take thermal protection and failure alarm function, installation occupation space has been reduced simultaneously, also avoid outside combustible medium to receive the ignition influence of static, whole explosion-proof subassembly provides explosion-proof, flame proof, the ability of static and spontaneous combustion prevention, wholly improve surge protector's safety in utilization.
Description
Technical Field
The invention relates to the technical field of electronic components, in particular to a surge protection device with a thermal protection device and a failure alarm function.
Background
Surge protectors are commonly used in electrical lines in homes, offices, industries, etc. to prevent damage to electrical equipment from transient overvoltages in the lines. When a peak current or voltage is generated in an electric circuit line due to a lightning strike or external interference, the surge protector can be turned on in a very short time, bleed off the current, and limit the voltage to a low level, thereby preventing the surge from damaging other equipment in the circuit. The varistor has a very large resistance under normal operation, corresponding to an off state, and when the voltage in the circuit exceeds a predetermined value, its resistance drops sharply, being in an on state, and the magnitude current can be drained, limiting the voltage level, but after a long period of use, causing the varistor to heat. In order to prevent the varistor from causing a fire accident due to overheating, a thermal protection component such as a thermal fuse is generally provided in the surge protector, and the thermal protection component is connected in series with the varistor and is closely attached to the varistor. After the temperature fuse is disconnected, the surge protector fails, and the protection effect on the equipment is lost.
At present, the PCB thermal protection devices are mostly realized in two types, one type is that a pin voltage dependent resistor is wrapped by a pin temperature fuse through a heat conducting adhesive and is wrapped by a heat-shrinkable sleeve, the other type is a TMOV tube, one pin voltage dependent resistor and one pin temperature fuse are packaged together in a series connection mode to form a component, the two types of thermal protection devices are generally large in size, too occupy space for an integrated circuit, and a surge protection device used in a flammable and explosive environment can generate sparks, electric arcs or dangerous temperatures to become an ignition source of explosive mixtures in an installation place, so that accident potential is generated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a surge protector with a thermal protection device and a failure alarm function, and solves the problems that the thermal protection mechanism of the conventional surge protector is large in installation space and low in safety when being installed in a flammable and explosive environment.
In order to achieve the purpose, the invention is realized by the following technical scheme: a surge protector with a thermal protection device and a failure alarm function comprises a fixing component, an explosion-proof component and a thermal protection component, wherein the explosion-proof component is fixedly connected inside the fixing component, and the thermal protection component is fixedly connected inside the explosion-proof component;
the thermal protection component comprises a light alarm, a PCB (printed Circuit Board) circuit board, a copper heat conducting seat, a surface mounted varistor, a heat conducting copper foil, a heat conducting adhesive block, a temperature fuse, a fixing frame, a heat collecting plate and a conveying interface piece, wherein the copper heat conducting seat is fixedly connected with the center of the top of the PCB circuit board, the surface mounted varistor arranged on the left and right of the copper heat conducting seat top wall is fixedly connected with two sets of surface mounted varistors arranged on the copper heat conducting seat top wall, the heat conducting copper foil is fixedly connected with the left of the PCB circuit board top wall, the heat conducting adhesive block is fixedly connected with the heat conducting copper foil top wall, the heat conducting adhesive block is fixedly connected with the temperature fuse on the top, and the temperature fuse is electrically connected with the light alarm.
Preferably, the fixing assembly comprises a protector shell, fixing foot seats and a copper inner cladding, the left side wall and the right side wall of the protector shell are fixedly connected with two groups of fixing foot seats which are arranged in a front-back mode, and the inner side wall of the protector shell is fixedly connected with the copper inner cladding.
Preferably, the explosion-proof assembly comprises a flame-proof box, an insulating sleeve, a top hollowed-out seat, an aluminum alloy explosion-proof shell, a limiting frame, a side hollowed-out seat and a sealing groove, the inner side wall of the flame-proof box is fixedly connected with the insulating sleeve, the top hollowed-out seats are arranged on the left and right of the equal fixed connection of the top wall and the bottom wall of the flame-proof box, the inner side wall of the insulating sleeve is fixedly connected with the aluminum alloy explosion-proof shell, the inner side wall of the aluminum alloy explosion-proof shell is fixedly connected with the limiting frame, and the side hollowed-out seats are arranged on the two groups of front and back of the equal fixed connection of the side hollowed-out seat side wall.
Preferably, the left side hollow seat and the right side hollow seat are respectively and fixedly connected to the left side wall and the right side wall of the copper inner cladding, and the upper top hollow seat and the lower top hollow seat are respectively and fixedly connected to the top wall and the bottom wall of the copper inner cladding.
Preferably, the flame-proof box right side wall is provided with a sealing groove, and the sealing groove sequentially penetrates through the limiting frame, the aluminum alloy explosion-proof shell, the insulating sleeve, the flame-proof box, the copper inner cladding and the protector shell right side wall from left to right.
Preferably, light alarm fixed connection is at protector casing top, PCB circuit board fixed connection is inside spacing.
Preferably, the right side of the heat-conducting copper foil is fixedly connected with a copper heat-conducting seat, the top of the PCB is fixedly connected with a fixing frame, and the middle of the fixing frame is fixedly connected with a heat collecting plate.
Preferably, the left side of the PCB is fixedly connected with a transmission interface member, and the transmission interface member passes through the sealing groove and extends to the outside of the protector shell.
The working principle is as follows: when the leakage current of the chip piezoresistor is increased due to aging, the chip piezoresistor can continuously generate heat under the action of the leakage current, the heat is transferred to the copper heat conducting seat, the copper heat conducting seat then guides the heat to the heat conducting copper foil which is in contact with the chip piezoresistor, the copper heat conducting seat can well transfer the heat to the heat conducting adhesive block through the heat conducting copper foil due to better heat conducting performance of metal, and then the heat is transferred to the temperature fuse through the heat conducting adhesive block, when the disconnection temperature of the temperature fuse is reached, the loop is disconnected, the temperature fuse is connected with a light alarm in parallel, when the temperature fuse normally works, no current flows through the indicating loop, when the temperature fuse is disconnected due to overheating, the current flows through the light alarm, the light alarm is lightened to play a role in alarming, the heat of the chip piezoresistor is also transferred to the heat collecting plate fixed by the fixing frame, and the heat is guided from multiple directions, the heat collecting plate is guided by the copper inner cladding which is arranged on the inner wall of the protector shell and is contacted with the external environment for dissipating heat, the possibility that the heat of the chip piezoresistor affects the combustion self-explosion of external combustible substances is reduced, the limiting frame is arranged in the aluminum alloy explosion-proof shell, the aluminum alloy explosion-proof shell forms a hollow guide space due to the material property and the inner circular angle property of the aluminum alloy explosion-proof shell, a top hollow seat and a side hollow seat which are additionally arranged between the light alarm and the copper inner cladding form a hollow guide space, so that fine self-explosion shock waves can be released into the protector shell through the hollow guide space, the absorption and isolation of the self-explosion of the chip piezoresistor are provided, the external interference protection is also provided for the chip piezoresistor, the insulating sleeve arranged outside the aluminum alloy explosion-proof shell is completely arranged on the outer side of the aluminum alloy explosion-proof shell, the static electricity generated by the explosion-proof box is propagated, and the ignition influence of the external combustible medium is also avoided, the whole explosion-proof assembly provides explosion-proof, anti-static and spontaneous combustion-proof capabilities, and the use safety of the surge protection device is integrally improved.
The invention provides a surge protector with a thermal protection device and a failure alarm function. The method has the following beneficial effects:
1. when the chip piezoresistor is aged and the leakage current is increased, the chip piezoresistor can continuously generate heat under the action of the leakage current and transfer the heat to the copper heat conduction seat, and then the copper heat conduction seat guides the heat to the contacted heat conduction copper foil.
2. The invention carries out simple absorption on heat through a plurality of groups of heat pipes additionally arranged in the heat collection plate, the heat collection plate is guided to be in contact with the external environment by utilizing a copper inner cladding which is additionally arranged on the inner wall of a protector shell for dissipating heat, the possibility that the heat of the chip piezoresistor affects the combustion self-explosion of external combustible substances is reduced, the limiting frame is additionally arranged in the aluminum alloy explosion-proof shell, the aluminum alloy explosion-proof shell has the characteristics of self material and inner circular angle, and a top hollow seat and a side hollow seat which are additionally arranged between a light alarm and the copper inner cladding form a hollow guide space, so that fine self-explosion shock waves can be released into the protector shell through the hollow guide space, the absorption and isolation of the self-explosion of the chip piezoresistor also provide external interference protection for the chip piezoresistor, an insulating sleeve which is additionally arranged on the outer side of the aluminum alloy explosion-proof shell and an explosion-proof box completely spread static electricity generated by the explosion-proof box, and the ignition influence of external combustible medium on the ignition of the static electricity are avoided, the whole explosion-proof assembly provides the capacities of explosion prevention, static electricity prevention, and surge protection, and the use safety of the whole surge-proof protector is improved.
Drawings
FIG. 1 is an isometric illustration of the present invention;
FIG. 2 is a schematic top view of the internal structure of the present invention;
FIG. 3 is a schematic view of the front and rear equiangular axes of the present invention;
FIG. 4 is a schematic view of the upper and lower equiangular axes of the fastening assembly and the explosion-stopping assembly of the present invention;
fig. 5 is an isometric illustration of a thermal protection assembly of the present invention.
Wherein, 1, fixing the component; 2. an explosion-proof assembly; 3. a thermal protection component; 101. a protector housing; 102. a fixed foot seat; 103. copper inner cladding; 201. an explosion-proof box; 202. an insulating sleeve; 203. a top hollow seat; 204. an aluminum alloy explosion-proof shell; 205. a limiting frame; 206. a side hollow seat; 207. a sealing groove; 301. a light alarm; 302. a PCB circuit board; 303. a copper heat conducting base; 304. a chip varistor; 305. a thermally conductive copper foil; 306. a heat-conducting rubber block; 307. a temperature fuse; 308. a fixed mount; 309. a heat collecting plate; 310. a delivery interface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1 to 5, an embodiment of the present invention provides a surge protection device with a thermal protection device and a failure alarm function, including a fixing component 1, an explosion-proof component 2, and a thermal protection component 3, where the explosion-proof component 2 is fixedly connected inside the fixing component 1, and the thermal protection component 3 is fixedly connected inside the explosion-proof component 2;
the thermal protection component 3 comprises a light alarm 301, a PCB 302, a copper heat conducting base 303, a patch piezoresistor 304, a heat conducting copper foil 305, a heat conducting adhesive block 306, a temperature fuse 307, a fixing frame 308, a heat collecting plate 309 and a conveying interface 310, the copper heat conducting base 303 is fixedly connected with the center of the top of the PCB 302, two sets of patch piezoresistors 304 arranged left and right are fixedly connected with the top wall of the copper heat conducting base 303, meanwhile, the preferred embodiment of the invention adopts 4 piezoresistors 304 and 4 piezoresistors arranged in an I shape, the left part of the top wall of the PCB 302 is fixedly connected with the heat conducting copper foil 305, the top wall of the heat conducting copper foil 305 is fixedly connected with the heat conducting adhesive block 306, the top of the heat conducting adhesive block 306 is fixedly connected with the temperature fuse 307, the temperature fuse 307 is electrically connected with the light alarm 301, the light alarm 301 is fixedly connected with the top of the protector shell 101, the PCB 302 is fixedly connected inside the limiting frame 205, the right side of the heat conducting copper foil 305 is fixedly connected with the copper heat conducting seat 303, the top of the PCB 302 is fixedly connected with the fixing frame 308, the middle part of the fixing frame 308 is fixedly connected with the heat collecting plate 309, the left side of the PCB 302 is fixedly connected with the conveying interface member 310, the conveying interface member 310 penetrates through the sealing groove 207 and extends to the outside of the protector shell 101, when the aging leakage current of the patch piezoresistor 304 is increased, the patch piezoresistor 304 can continuously generate heat under the action of the leakage current and transmits the heat to the copper heat conducting seat 303, the copper heat conducting seat 303 guides the heat to the contacted heat conducting copper foil 305, because the heat conducting property of metal is better, the heat can be well transmitted to the heat conducting adhesive block 306 through the heat conducting copper foil 305 and then transmitted to the temperature fuse 307 through the heat conducting adhesive block 306, when the disconnection temperature of the temperature fuse 307 is reached, the loop is disconnected, the temperature fuse 307 is connected with the light alarm 301 in parallel, when the thermal fuse 307 is working normally, no current flows through the indicating circuit, when the thermal fuse 307 is broken due to overheating, current flows through the light alarm 301, the light alarm 301 is turned on to alarm, and the heat of the patch varistor 304 is also conducted to the heat collecting plate 309 fixed by the fixing frame 308, so that the heat is guided from multiple directions.
The fixing assembly 1 comprises a protector shell 101, fixing foot seats 102 and a copper inner cladding 103, the left side wall and the right side wall of the protector shell 101 are fixedly connected with two groups of fixing foot seats 102 which are arranged in front and back, the inner side wall of the protector shell 101 is fixedly connected with the copper inner cladding 103, and the electrophoresis protector is fixed at a required position through the additionally arranged fixing foot seats 102.
The explosion-proof component 2 comprises an explosion-proof box 201, an insulating sleeve 202, a top hollowed-out seat 203, an aluminum alloy explosion-proof shell 204, a limiting frame 205, a side hollowed-out seat 206 and a sealing groove 207, wherein the inner side wall of the explosion-proof box 201 is fixedly connected with the insulating sleeve 202, the top wall and the bottom wall of the explosion-proof box 201 are fixedly connected with the top hollowed-out seats 203 which are arranged left and right, the inner side wall of the insulating sleeve 202 is fixedly connected with the aluminum alloy explosion-proof shell 204, the inner side wall of the aluminum alloy explosion-proof shell 204 is fixedly connected with the limiting frame 205, the side walls of the side hollowed-out seats 206 are fixedly connected with two groups of side hollowed-out seats 206 which are arranged front and back, the left and right hollowed-out seats 206 are respectively and fixedly connected with the left and right side walls of a copper inner cladding 103, the upper and lower top seats 203 are respectively and fixedly connected with the top wall and the bottom wall of the copper inner cladding 103, the right side wall of the explosion-proof box 201 is provided with the sealing groove 207, the sealing groove 207 sequentially penetrates through the limiting frame 205, the aluminum alloy explosion-proof shell 204, the insulating sleeve 202, the explosion-proof box, the explosion-proof shell 207, the copper inner cladding 103 and the right side wall of the protector 101 from left to the right side wall of the protector shell 101, the heat collecting plate 309 is guided by the copper inner cladding 103 arranged on the inner wall of the protector shell 101 to contact with the external environment for dissipating heat, so that the possibility that the heat of the chip piezoresistor 304 affects the combustion spontaneous explosion of external combustible substances is reduced, the limiting frame 205 is arranged in the aluminum alloy explosion-proof shell 204, the aluminum alloy explosion-proof shell 204 has the characteristics of material quality and internal angle, the top hollow seat 203 and the side hollow seat 206 additionally arranged between the light alarm 301 and the copper inner cladding 103 form a hollow guide space, so that fine spontaneous explosion shock waves can be released into the protector shell 101 through the hollow guide space, the absorption and isolation of the explosion of the chip piezoresistor 304 are provided, the chip piezoresistor 304 is protected from external interference, and the insulating sleeve 202 arranged outside the aluminum alloy explosion-proof shell 204 is completely arranged on the outer side of the aluminum alloy explosion-proof shell 204, the static that explosion-proof case 201 self produced spreads, also avoids outside combustible medium to receive the ignition influence of static, and whole explosion-proof subassembly 2 provides explosion-proof, anti-static and prevent spontaneous combustion's ability, wholly improves surge protector's safety in utilization.
The working principle of the invention is as follows: because the explosion-proof assembly 2 is arranged, wherein the explosion-proof assembly 2 comprises the explosion-proof box 201, the insulating sleeve 202, the top hollow seat 203 and the aluminum alloy explosion-proof shell 204, the surge protector can achieve the effects of explosion prevention and explosion suppression when in work.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a take surge protector of thermal protection device and failure alarm function, includes fixed subassembly (1), hinders and explode subassembly (2) and thermal protection subassembly (3), its characterized in that: an explosion-proof assembly (2) is fixedly connected inside the fixed assembly (1), and a thermal protection assembly (3) is fixedly connected inside the explosion-proof assembly (2);
thermal protection subassembly (3) are including light alarm (301), PCB circuit board (302), copper heat conduction seat (303), paster piezo-resistor (304), heat conduction copper foil (305), heat conduction glue piece (306), temperature fuse (307), mount (308), heat collection plate (309) and transport interface spare (310), PCB circuit board (302) top center fixed connection copper heat conduction seat (303), paster piezo-resistor (304) of arranging about copper heat conduction seat (303) roof fixed connection is two sets of, PCB circuit board (302) roof left part fixed connection heat conduction copper foil (305), heat conduction copper foil (305) roof fixed connection heat conduction glue piece (306), heat conduction glue piece (306) top fixed connection temperature fuse (307), temperature fuse (307) electric connection light alarm (301).
2. A surge protector with thermal protection and failure warning features as claimed in claim 1, wherein: the fixed assembly (1) comprises a protector shell (101), fixed foot seats (102) and a copper inner cladding (103), the left side wall and the right side wall of the protector shell (101) are fixedly connected with the two groups of the fixed foot seats (102) which are arranged in a front-back mode, and the inner side wall of the protector shell (101) is fixedly connected with the copper inner cladding (103).
3. A surge protector with thermal protection and failure warning functions as claimed in claim 1, wherein: hinder and explode subassembly (2) including flame proof case (201), insulating cover (202), top fretwork seat (203), aluminum alloy explosion-proof shell (204), spacing (205), side fretwork seat (206) and seal groove (207), flame proof case (201) inside wall fixed connection insulating cover (202), top fretwork seat (203) of arranging about the equal fixed connection of flame proof case (201) roof and diapire, insulating cover (202) inside wall fixed connection aluminum alloy explosion-proof shell (204), aluminum alloy explosion-proof shell (204) inside wall fixed connection spacing (205), the side fretwork seat (206) of arranging around the equal fixed connection of side fretwork seat (206) lateral wall is two sets of.
4. A surge protector with thermal protection and failure warning functions as claimed in claim 3, wherein: the left and right side hollow-out seats (206) are respectively and fixedly connected to the left and right side walls of the copper inner cladding (103), and the upper and lower top hollow-out seats (203) are respectively and fixedly connected to the top wall and the bottom wall of the copper inner cladding (103).
5. A surge protector with thermal protection and failure warning functions as claimed in claim 3, wherein: explosion-proof box (201) right side wall is provided with seal groove (207), seal groove (207) run through spacing (205), aluminum alloy explosion-proof shell (204), insulating cover (202), explosion-proof box (201), cladding (103) and protector casing (101) right side wall in proper order from a left side to the right side.
6. A surge protector with thermal protection and failure warning functions as claimed in claim 1, wherein: light alarm (301) fixed connection is at protector casing (101) top, PCB circuit board (302) fixed connection is inside spacing (205).
7. A surge protector with thermal protection and failure warning features as claimed in claim 1, wherein: the heat conducting copper foil (305) is fixedly connected with a copper heat conducting seat (303) on the right side, the top of the PCB (302) is fixedly connected with a fixing frame (308), and the middle of the fixing frame (308) is fixedly connected with a heat collecting plate (309).
8. A surge protector with thermal protection and failure warning functions as claimed in claim 1, wherein: the left side of the PCB (302) is fixedly connected with a conveying interface piece (310), and the conveying interface piece (310) penetrates through the sealing groove (207) and extends to the outside of the protector shell (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210818521.2A CN115207891A (en) | 2022-07-12 | 2022-07-12 | Surge protection device with thermal protection device and failure alarm function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210818521.2A CN115207891A (en) | 2022-07-12 | 2022-07-12 | Surge protection device with thermal protection device and failure alarm function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115207891A true CN115207891A (en) | 2022-10-18 |
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ID=83579271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210818521.2A Pending CN115207891A (en) | 2022-07-12 | 2022-07-12 | Surge protection device with thermal protection device and failure alarm function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115207891A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117135893A (en) * | 2023-10-24 | 2023-11-28 | 滨州泽郦精密金属科技有限公司 | Explosion-proof flame detector shell |
-
2022
- 2022-07-12 CN CN202210818521.2A patent/CN115207891A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117135893A (en) * | 2023-10-24 | 2023-11-28 | 滨州泽郦精密金属科技有限公司 | Explosion-proof flame detector shell |
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Effective date of registration: 20230823 Address after: Room 702, Building 5, No. 518 Xinzhuan Road, Songjiang District, Shanghai Applicant after: SHANGHAI CHENZHU INSTRUMENT Co.,Ltd. Address before: 201102 Room 204, second floor, building 4, No. 1398, Xinsong Road, Xinqiao Town, Songjiang District, Shanghai Applicant before: Shanghai chenzhu Lightning Protection Technology Co.,Ltd. Applicant before: SHANGHAI CHENZHU INSTRUMENT Co.,Ltd. |
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