CN114973576A - Fire alarm device with self-checking system - Google Patents
Fire alarm device with self-checking system Download PDFInfo
- Publication number
- CN114973576A CN114973576A CN202210483594.0A CN202210483594A CN114973576A CN 114973576 A CN114973576 A CN 114973576A CN 202210483594 A CN202210483594 A CN 202210483594A CN 114973576 A CN114973576 A CN 114973576A
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- Prior art keywords
- metal sheet
- threaded
- metal
- alarm device
- self
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 172
- 239000002184 metal Substances 0.000 claims abstract description 172
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 23
- 238000009413 insulation Methods 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 230000000994 depressogenic effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 description 7
- XOMKZKJEJBZBJJ-UHFFFAOYSA-N 1,2-dichloro-3-phenylbenzene Chemical compound ClC1=CC=CC(C=2C=CC=CC=2)=C1Cl XOMKZKJEJBZBJJ-UHFFFAOYSA-N 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Electromagnetism (AREA)
- Fire Alarms (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The invention discloses a fire alarm device with a self-checking system, which comprises a mounting plate, a mounting shell, an insulating cover, a storage battery, a PCB (printed Circuit Board), a wiring end, a heat insulating sleeve, a neodymium magnet, a heat insulating cover, a threaded rod, a separating ring, a threaded ring, a trigger assembly and a wiring assembly, wherein the mounting shell and the storage battery are fixedly arranged at the top of the mounting plate; the bottom of mounting panel is fixed and is provided with insulating boot, neodymium magnet, separates heat exchanger and a plurality of threaded rod, and neodymium magnet cup joints each other with separating the heat exchanger and is located the centre of a plurality of threaded rods. The attraction between the neodymium magnet and the magnet blocks restrains the elasticity generated by the temperature rise of the upper metal sheet and the lower metal sheet, when the temperature of the magnet blocks reaches the Curie temperature, the magnetic force of the magnet blocks disappears, and the upper metal sheet and the lower metal sheet are instantly bent to connect the current loops of the two metal tubes.
Description
Technical Field
The invention relates to the technical field of fire alarm devices, in particular to a fire alarm device with a self-checking system.
Background
The fire alarm device can be installed and triggered in a manual alarm device and an automatic alarm device, the automatic alarm device can be triggered in a smoke triggering mode and a temperature triggering mode, a temperature sensing element is required to sense the temperature along with the temperature, and the temperature sensing element comprises various thermometers and bimetallic strips;
at present, fire alarm device, because bimetallic strip's cost is low simple structure, so many alarm device all trigger the warning as temperature sensing element through the bimetallic strip, but because the bending degree and the temperature of bimetallic strip are directly proportional, the temperature rising will trigger the bimetallic strip and buckle, therefore when the external temperature is too high but does not take place the conflagration, because the bimetallic strip bends along with the temperature rise and triggers alarm device easily, cause alarm device false triggering, and the bimetallic strip warp along with the change of temperature, can't direct trigger alarm device in the twinkling of an eye, cause to trigger not fast enough, the prior art discloses CN201010541743.1, a fire alarm switch, just there is above-mentioned defect, consequently need provide one kind through bimetallic strip and magnetic force combine together to trigger the alarm in the twinkling of an eye in order to overcome the fire alarm device of above-mentioned defect.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, the bending degree of a bimetallic strip is in direct proportion to the temperature, the bimetallic strip is bent due to the temperature rise, when the external temperature is too high but a fire disaster does not happen, the alarm device is easily triggered due to the fact that the bimetallic strip is bent along with the temperature rise, the alarm device is triggered mistakenly, the bimetallic strip cannot be directly and instantly triggered due to the fact that the bimetallic strip deforms along with the temperature change, and the triggering is not fast enough, and therefore the fire-fighting alarm device with the self-checking system is provided.
In order to achieve the purpose, the invention adopts the following technical scheme: a fire alarm device with a self-checking system comprises a mounting plate, a mounting shell, an insulating cover, a storage battery, a PCB (printed circuit board), a wiring end, a heat insulation sleeve, a neodymium magnet, a heat insulation cover, a threaded rod, a separating ring, a threaded ring, a trigger assembly and a wiring assembly, wherein the mounting shell and the storage battery are fixedly arranged at the top of the mounting plate, the heat insulation sleeve is arranged on the inner wall of the mounting shell in a matched manner, the PCB is fixedly arranged on the inner wall of the heat insulation sleeve, and the wiring end is embedded into two sides of the mounting shell; the bottom of the mounting plate is fixedly provided with an insulating cover, a neodymium magnet, a heat insulation cover and a plurality of threaded rods, the neodymium magnet and the heat insulation cover are mutually sleeved and positioned in the middle of the plurality of threaded rods, and the end parts of the threaded rods are sleeved with two separating rings and two threaded rings; the end of the threaded rod is fixedly provided with a trigger assembly through a threaded ring, and the middle of the inner side of the insulating cover is provided with two wiring assemblies linked with the trigger assembly.
Further preferably, the trigger assembly includes sheetmetal, electrically conductive section of thick bamboo, magnet piece and metal pole down, the tip of threaded rod is provided with sheetmetal and sheetmetal down of closely laminating through the screw ring is fixed, and the centre of sheetmetal can be dismantled fixedly down and be provided with electrically conductive section of thick bamboo, and the inner wall of electrically conductive section of thick bamboo is provided with the magnet piece, and the fixed surface of electrically conductive section of thick bamboo is provided with the metal pole.
Further preferably, the wiring subassembly includes connecting wire, tubular metal resonator, conductive spring and metal covering, and the inboard centre of insulating boot is provided with two tubular metal resonators, and the side of tubular metal resonator is connected with the connecting wire, and the inner wall of tubular metal resonator is fixed and is provided with conductive spring, and conductive spring's top is fixed and is provided with the metal covering.
Further preferably, the middle of the lower metal sheet protrudes downwards to form a threaded end, the top of the conductive cylinder forms an annular connecting end upwards, and the threaded end and the connecting end are in threaded sleeve connection to enable the lower metal sheet and the conductive cylinder to be detachably fixed.
Preferably, the magnet block and the neodymium magnet are attracted in an opposite direction, and the attraction force between the magnet block and the neodymium magnet is larger than the elastic force caused by the expansion of the upper metal sheet and the lower metal sheet.
Preferably, the middle parts of the upper metal sheet and the lower metal sheet are concave downwards to form an arc shape, the shapes of the upper metal sheet and the lower metal sheet are matched and kept to be attached, and the end part of the threaded rod penetrates through the side surfaces of the upper metal sheet and the lower metal sheet.
Further preferably, the expansion coefficients of the upper metal sheet and the lower metal sheet are different, so that the upper metal sheet and the lower metal sheet are heated and then bent downwards, and the bending distance between the upper metal sheet and the lower metal sheet is greater than the distance between the metal cover and the metal rod.
Further preferably, the metal tube is electrically connected to the PCB board in series by a connecting wire, the two metal rods are respectively located right above the two metal covers, and the metal covers are movably sleeved on the top of the metal tube.
Further preferably, the separating ring is tightly attached between the threaded ring and the lower metal sheet, and the bottom of the conductive cylinder penetrates through the middle of the insulating cover.
Further preferably, the PCB is electrically connected with a central processing unit, a buzzer, a rectifier and a transformer, the two terminals are electrically connected to the PCB through a wire, and the storage battery is electrically connected to the PCB through a wire.
The invention has the beneficial effects that:
1. the upper metal sheet and the lower metal sheet form a double metal sheet, the attraction force of the neodymium magnet and the magnet block inhibits the elasticity generated by the temperature rise of the upper metal sheet and the lower metal sheet, when the temperature of the magnet block reaches the Curie temperature, the magnetic force of the magnet block disappears, the upper metal sheet and the lower metal sheet are instantly bent to be connected with the current loops of the two metal pipes, the alarm can be instantly triggered, the double metal sheet is matched with the magnet to reach a certain temperature and instantly lose the magnetic force, and the purpose of instantly triggering the alarm is achieved;
2. the magnetic force of the magnet block can be recovered instantly after the temperature is reduced, so that the upper metal sheet and the lower metal sheet can be ensured to be deformed all the time and have enough elasticity in the process of reducing the temperature, the two metal tubes can stably form a current loop, the upper metal sheet and the lower metal sheet can be reset instantly, and the magnetic power connector has the advantages of stable wiring and rapid resetting;
3. the metal cover moves downwards to be connected with the metal pipe, the metal cover and the metal pipe are tightly attached to each other all the time through the conductive springs between the metal cover and the metal pipe, the two metal pipes form a current loop through the two metal pipes and the conductive cylinder, the conductive springs can enable wiring to be stable, impact force of the metal pipes can be buffered, and the metal pipe wiring device has the advantage of being stable in wiring.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a first cross-sectional view of the present invention;
FIG. 3 is a schematic cross-sectional view of the entire present invention;
FIG. 4 is a schematic bottom view of the lower metal sheet of the present invention;
FIG. 5 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;
FIG. 6 is an enlarged view of the invention at B of FIG. 2;
fig. 7 is an enlarged view of the invention at C in fig. 3.
In the figure: the device comprises a mounting plate 1, a mounting shell 2, an insulating cover 3, a storage battery 4, a PCB 5, a terminal 6, a heat insulation sleeve 7, a neodymium magnet 8, a heat insulation cover 9, a threaded rod 10, a separating ring 11, a connecting wire 12, a threaded ring 13, an upper metal sheet 14, a lower metal sheet 15, a threaded end 16, a conductive cylinder 17, a connecting end 18, a magnet block 19, a metal rod 20, a metal pipe 21, a conductive spring 22 and a metal cover 23.
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.
Referring to fig. 1-7, a fire alarm device with a self-checking system comprises a mounting plate 1, a mounting shell 2, an insulating cover 3, a storage battery 4, a PCB 5, a wiring terminal 6, a heat insulating sleeve 7, a neodymium magnet 8, a heat insulating cover 9, a threaded rod 10, a separating ring 11, a threaded ring 13, a trigger assembly and a wiring assembly, wherein the mounting shell 2 and the storage battery 4 are fixedly arranged at the top of the mounting plate 1, the heat insulating sleeve 7 is arranged on the inner wall of the mounting shell 2 in a matched manner, the PCB 5 is fixedly arranged on the inner wall of the heat insulating sleeve 7, and the wiring terminal 6 is embedded into two sides of the mounting shell 2; the bottom of the mounting plate 1 is fixedly provided with an insulating cover 3, a neodymium magnet 8, a heat insulation cover 9 and a plurality of threaded rods 10, the neodymium magnet 8 and the heat insulation cover 9 are mutually sleeved and positioned in the middle of the plurality of threaded rods 10, and the end parts of the threaded rods 10 are sleeved with two separation rings 11 and two threaded rings 13; the end part of the threaded rod 10 is fixedly provided with a trigger component through a threaded ring 13, and the middle of the inner side of the insulating cover 3 is provided with two wiring components linked with the trigger component.
In this embodiment, the trigger assembly includes an upper metal sheet 14, a lower metal sheet 15, a conductive cylinder 17, a magnet block 19 and a metal rod 20, the end of the threaded rod 10 is fixedly provided with the upper metal sheet 14 and the lower metal sheet 15 which are closely attached through a threaded ring 13, the conductive cylinder 17 is detachably and fixedly arranged in the middle of the lower metal sheet 15, the magnet block 19 is arranged on the inner wall of the conductive cylinder 17, and the metal rod 20 is fixedly arranged on the surface of the conductive cylinder 17.
Preferably, the middle of the lower metal sheet 15 protrudes downwards to form a threaded end 16, the top of the conductive cylinder 17 forms an annular connecting end 18 upwards, and the threaded end 16 and the connecting end 18 are in threaded sleeve connection, so that the lower metal sheet 15 and the conductive cylinder 17 can be detachably fixed, and the conductive cylinder 17 can be conveniently mounted and dismounted.
Preferably, the magnet block 19 and the neodymium magnet 8 are attracted in an opposite direction, and the attraction force between the magnet block 19 and the neodymium magnet 8 is larger than the elastic force caused by the expansion of the upper metal sheet 14 and the lower metal sheet 15, so that the upper metal sheet 14 and the lower metal sheet 15 cannot deform when the temperature is not reached, the upper metal sheet 14 and the lower metal sheet 15 are prevented from deforming along with the temperature rise, and the false triggering of an alarm is prevented.
Preferably, the middle parts of the upper metal sheet 14 and the lower metal sheet 15 are concave downwards to form an arc shape, the shapes of the upper metal sheet 14 and the lower metal sheet 15 are matched and kept to be attached, the end part of the threaded rod 10 penetrates through the side surfaces of the upper metal sheet 14 and the lower metal sheet 15, the expansion coefficients of the upper metal sheet 14 and the lower metal sheet 15 are different, the upper metal sheet 14 and the lower metal sheet 15 are bent downwards after being heated, and the bending distance of the upper metal sheet 14 and the lower metal sheet 15 is larger than the distance between the metal cover 23 and the metal rod 20;
in specific implementation, the upper metal sheet 14 and the lower metal sheet 15 form a bimetallic strip, the attraction force of the neodymium magnet 8 and the magnet block 19 inhibits the elasticity generated by the temperature rise of the upper metal sheet 14 and the lower metal sheet 15, when the temperature of the magnet block 19 reaches the Curie temperature, the magnetic force of the magnet block 19 disappears, the upper metal sheet 14 and the lower metal sheet 15 are instantly bent to connect the current loops of the two metal pipes 21, an alarm can be instantly triggered, and the purpose of instantly triggering the alarm is achieved by matching the bimetallic strip with the magnet to achieve the specificity that the magnetic force is instantly lost at a certain temperature.
Preferably, the separating ring 11 is tightly attached between the threaded ring 13 and the lower metal sheet 15, the bottom of the conductive cylinder 17 penetrates through the middle of the insulating cover 3, the threaded ring 13 is sleeved on the threaded rod 10 in a threaded manner, and the two threaded rings 13 fix the upper metal sheet 14 and the lower metal sheet 15, so that the upper metal sheet 14 and the lower metal sheet 15 can be conveniently mounted and dismounted.
In this embodiment, the wiring assembly includes connecting wire 12, tubular metal resonator 21, conductive spring 22 and metal cover 23, and the inboard centre of insulating boot 3 is provided with two tubular metal resonators 21, and the side of tubular metal resonator 21 is connected with connecting wire 12, and the fixed conductive spring 22 that is provided with of inner wall of tubular metal resonator 21, the fixed metal cover 23 that is provided with in top of conductive spring 22.
Preferably, the metal tube 21 is electrically connected to the PCB 5 in series by the connecting wire 12, the two metal rods 21 are respectively located right above the two metal covers 23, and the metal covers 23 are movably sleeved on the top of the metal tube 21;
in specific implementation, the metal cover 23 moves downwards to be connected with the metal pipe 21, the conductive spring 22 between the metal cover 23 and the metal pipe 21 enables the metal cover 23 and the metal rod 20 to be attached to each other all the time, the two metal pipes 21 form a current loop through the two metal rods 20 and the conductive cylinder 17, the conductive spring 22 can stabilize wiring and buffer impact force of the metal rods 21, and the advantage of stable wiring is achieved.
Preferably, the PCB board 5 is electrically connected with a central processing unit, a buzzer, a rectifier and a transformer, two wiring terminals 6 are electrically connected to the PCB board 5 through a wire, the storage battery 4 is electrically connected to the PCB board 5 through a wire, the buzzer is connected with two metal tubes 21 in series, the two metal tubes 21 can form a current loop and then are connected with a power supply of the buzzer, the buzzer gives an alarm, the wiring terminals 6 can be used as an external power supply, and the storage battery 4 can provide a power supply for the PCB board 5 when the external power supply is powered off.
In the present invention, when in use, first, the conductive tube 17 and the metal rod 20 are located in the insulating cover 3 as shown in fig. 2, when the external environment temperature rises and no fire breaks out, the upper metal piece 14 and the lower metal piece 15 have a downward bending tendency, the attraction force between the magnet block 19 and the neodymium magnet 8 suppresses the downward bending tendency of the upper metal piece 14 and the lower metal piece 15, when a fire breaks out, the external environment temperature rises sharply, the elastic force generated by the upper metal piece 14 and the lower metal piece 15 when heated increases sharply, after the temperature of the magnet block 19 exceeds its own curie temperature, the magnetism of the magnet block 19 disappears instantaneously, the upper metal piece 14 and the lower metal piece 15 deform and bend downward, the conductive tube 17 and the metal rod 20 move downward rapidly, the metal rod 20 hits against the top of the metal cover 23 to press down the metal cover 23 to closely attach to the top of the metal tube 21, as shown in the attached figure 3, two metal tubes 21 form a current loop through two metal rods 20 and the conductive cylinder 17, and the power supply of the buzzer is connected to give out an alarm sound.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. The utility model provides a fire alarm device with self-checking system, includes mounting panel (1), installation shell (2), insulating boot (3), battery (4), PCB board (5), wiring end (6), heat insulating sleeve (7), neodymium magnet (8), separates heat exchanger (9), threaded rod (10), spacer ring (11), threaded ring (13), triggers subassembly and wiring subassembly, its characterized in that: the top of the mounting plate (1) is fixedly provided with a mounting shell (2) and a storage battery (4), the inner wall of the mounting shell (2) is provided with a heat insulation sleeve (7) in a matching manner, the inner wall of the heat insulation sleeve (7) is fixedly provided with a PCB (5), and two sides of the mounting shell (2) are embedded with wiring terminals (6);
the bottom of the mounting plate (1) is fixedly provided with an insulating cover (3), a neodymium magnet (8), a heat insulating cover (9) and a plurality of threaded rods (10), the neodymium magnet (8) and the heat insulating cover (9) are mutually sleeved and positioned in the middle of the plurality of threaded rods (10), and the end part of each threaded rod (10) is sleeved with two separating rings (11) and two threaded rings (13);
the end part of the threaded rod (10) is fixedly provided with a trigger assembly through a threaded ring (13), and the middle of the inner side of the insulating cover (3) is provided with two wiring assemblies linked with the trigger assembly.
2. The fire alarm device with the self-checking system as claimed in claim 1, wherein the triggering component comprises an upper metal sheet (14), a lower metal sheet (15), a conductive cylinder (17), a magnet block (19) and a metal rod (20), the end of the threaded rod (10) is fixedly provided with the upper metal sheet (14) and the lower metal sheet (15) which are tightly attached through a threaded ring (13), the middle of the lower metal sheet (15) is detachably and fixedly provided with the conductive cylinder (17), the inner wall of the conductive cylinder (17) is provided with the magnet block (19), and the surface of the conductive cylinder (17) is fixedly provided with the metal rod (20).
3. The fire alarm device with the self-checking system as claimed in claim 2, wherein the wiring assembly comprises a connecting wire (12), a metal tube (21), a conductive spring (22) and a metal cover (23), two metal tubes (21) are arranged in the middle of the inner side of the insulating cover (3), the connecting wire (12) is connected to the side surface of each metal tube (21), the conductive spring (22) is fixedly arranged on the inner wall of each metal tube (21), and the metal cover (23) is fixedly arranged on the top of each conductive spring (22).
4. A fire alarm device with self-checking system according to claim 2, wherein the middle of the lower metal sheet (15) is protruded downwards to form a threaded end (16), the top of the conductive cylinder (17) is upward to form a ring-shaped connecting end (18), and the threaded end (16) and the connecting end (18) are in threaded socket joint.
5. A fire alarm unit with self-test system, as claimed in claim 2, wherein the magnet block (19) is attracted to the neodymium magnet (8) in opposite directions, the attraction between the magnet block (19) and the neodymium magnet (8) being greater than the elastic force of the upper and lower metal sheets (14, 15) due to their expansion.
6. The fire alarm device with the self-checking system as claimed in claim 2, wherein the middle portions of the upper and lower metal sheets (14, 15) are depressed downward in an arc shape, and the end portion of the threaded rod (10) penetrates the side surfaces of the upper and lower metal sheets (14, 15).
7. A fire alarm device with self-checking system according to claim 2, wherein the upper and lower metal sheets (14, 15) have different expansion coefficients, so that the upper and lower metal sheets (14, 15) are heated and then bent downwards, and the bending distance between the upper and lower metal sheets (14, 15) is greater than the distance between the metal cover (23) and the metal rod (20).
8. A fire alarm device with self-checking system according to claim 3, wherein the metal tube (21) is electrically connected to the PCB (5) in series by a connecting wire (12), and the two metal rods (21) are respectively located right above the two metal covers (23).
9. A fire alarm device with self-checking system according to claim 3, characterised in that the separating ring (11) is tightly fitted between the threaded ring (13) and the lower metal sheet (15), and the bottom of the conductive cylinder (17) penetrates the middle of the insulating cover (3).
10. A fire alarm device with self-checking system as claimed in claim 1, wherein the PCB board (5) is electrically connected with a central processing unit, a buzzer, a rectifier and a transformer, the two terminals (6) are electrically connected to the PCB board (5) through wires, and the storage battery (4) is electrically connected to the PCB board (5) through wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210483594.0A CN114973576A (en) | 2022-05-06 | 2022-05-06 | Fire alarm device with self-checking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210483594.0A CN114973576A (en) | 2022-05-06 | 2022-05-06 | Fire alarm device with self-checking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114973576A true CN114973576A (en) | 2022-08-30 |
Family
ID=82980349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210483594.0A Pending CN114973576A (en) | 2022-05-06 | 2022-05-06 | Fire alarm device with self-checking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114973576A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB363226A (en) * | 1931-02-20 | 1931-12-17 | George Hall Brady | Improvements in and relating to temperature sensitive electrical circuit closers |
| MY101754A (en) * | 1984-01-09 | 1992-01-17 | John Philip Smith Charles | Thermal alarm |
| CN208000661U (en) * | 2018-03-21 | 2018-10-23 | 天津亚丽安报警设备有限公司 | Point-type temperature sensing fire alarm detector |
| CN209214790U (en) * | 2018-12-29 | 2019-08-06 | 南京嘉迪紧固件制造有限公司 | Transmission line of electricity tower bar high temperature alarm bolt |
| CN210346914U (en) * | 2019-04-18 | 2020-04-17 | 湖北工业大学 | Temperature monitoring alarm protection device of power |
| CN114373653A (en) * | 2022-03-15 | 2022-04-19 | 深圳市精视智造科技有限公司 | Expansion fuse |
-
2022
- 2022-05-06 CN CN202210483594.0A patent/CN114973576A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB363226A (en) * | 1931-02-20 | 1931-12-17 | George Hall Brady | Improvements in and relating to temperature sensitive electrical circuit closers |
| MY101754A (en) * | 1984-01-09 | 1992-01-17 | John Philip Smith Charles | Thermal alarm |
| CN208000661U (en) * | 2018-03-21 | 2018-10-23 | 天津亚丽安报警设备有限公司 | Point-type temperature sensing fire alarm detector |
| CN209214790U (en) * | 2018-12-29 | 2019-08-06 | 南京嘉迪紧固件制造有限公司 | Transmission line of electricity tower bar high temperature alarm bolt |
| CN210346914U (en) * | 2019-04-18 | 2020-04-17 | 湖北工业大学 | Temperature monitoring alarm protection device of power |
| CN114373653A (en) * | 2022-03-15 | 2022-04-19 | 深圳市精视智造科技有限公司 | Expansion fuse |
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Application publication date: 20220830 |