CN114913666A - Labyrinth smoke detector capable of being detached independently and preventing false alarm and detection method - Google Patents
Labyrinth smoke detector capable of being detached independently and preventing false alarm and detection method Download PDFInfo
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- CN114913666A CN114913666A CN202210511733.6A CN202210511733A CN114913666A CN 114913666 A CN114913666 A CN 114913666A CN 202210511733 A CN202210511733 A CN 202210511733A CN 114913666 A CN114913666 A CN 114913666A
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- labyrinth
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- cover
- cover body
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- 239000000779 smoke Substances 0.000 title claims abstract description 84
- 238000001514 detection method Methods 0.000 title abstract description 9
- 230000000903 blocking effect Effects 0.000 claims abstract description 39
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 9
- 239000003546 flue gas Substances 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 241000238631 Hexapoda Species 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000083547 Columella Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000243 solution 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
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
-
- 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
Abstract
The invention relates to a labyrinth smoke detector capable of being independently disassembled and preventing false alarm and a detection method, and belongs to the technical field of smoke detectors. The labyrinth is sequentially divided into an upper cover, a labyrinth and a fastener from top to bottom, wherein the labyrinth can be independently and detachably arranged in a cavity which is accommodated by the upper cover and the fastener; wherein: the upper cover is divided into an upper cover body I, a lower cover body II and a reinforcing bridge for connecting the cover body I and the cover body II, a female buckle matched with the fastener is installed on the edge of the lower surface of the cover body II, and an installation groove and a light guide column which are matched with the labyrinth are formed in the inner wall of the cover body I; the labyrinth comprises a body which is arranged in a basin-shaped inverted manner, the body is divided into an insect-proof net and a light blocking structure from outside to inside, and the insect-proof net and the light blocking structure are fixed through a supporting plate; the fastener comprises a buckle cover, a secondary buckle matched with the primary buckle is installed at the edge of the buckle cover, and a rotary buckle is installed in the middle of the buckle cover. The invention can be widely applied to the occasions of smoke detectors, machinery and industrial equipment, coating equipment and fire fighting equipment.
Description
Technical Field
The invention relates to a labyrinth smoke detector capable of being independently disassembled and preventing false alarm and a detection method, and belongs to the technical field of smoke detectors.
Background
The common labyrinth form in the market at present is a side-smoke-feeding mode, and environmental light, dust and water vapor easily enter a detection area due to the structural form, so that false alarm is caused; the market maintenance cleaning work generally disassembles and cleans the whole machine, the PCB board can be exposed outside in the cleaning mode, no static protection measures are taken on site, and the PCB board is very easy to damage in the actual maintenance process. The whole machine is completely disassembled, dust is removed and cleaned, the PCB can be exposed outside in the cleaning mode, no static protection measures are taken on site, and damage is easy to occur in the actual maintenance process.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a labyrinth smoke detector which can be independently disassembled and can prevent false alarm and a detection method.
The labyrinth smoke detector capable of being independently disassembled and preventing false alarm is sequentially divided into an upper cover, a labyrinth and a fastener from top to bottom, wherein the labyrinth can be independently disassembled and arranged in a cavity body which is accommodated by the upper cover and the fastener; wherein:
the upper cover is divided into an upper cover body I, a lower cover body II and a reinforcing bridge for connecting the cover body I and the cover body II, the cover body I extends outwards from the middle part of the cover body II through the reinforcing bridge, and a smoke inlet channel I is formed in a gap between the cover body I and the cover body II; the reinforcing bridge is of a double-arch structure, and a gap in the reinforcing bridge forms a smoke inlet channel II; the edge of the lower surface of the cover body II is provided with a female buckle matched with the fastener, and the inner wall of the cover body I is provided with a mounting groove and a light guide column matched with the labyrinth;
the labyrinth comprises a body which is arranged in a basin-shaped inverted manner, the body is divided into an insect-proof net and a light blocking structure from outside to inside, and the insect-proof net and the light blocking structure are fixed through a supporting plate; a horn-shaped light guide cavity is fixedly extended towards the light blocking structure by the supporting plate, and a light guide column is accommodated in the light guide cavity; the inner wall of the light blocking structure is provided with a reflecting surface, and the top of the light blocking structure is provided with condensation-proof small columns which are arranged in concentric circles;
the fastener comprises a buckle cover, a secondary buckle matched with the primary buckle is arranged at the edge of the buckle cover, and a rotary buckle is arranged in the middle of the buckle cover;
wherein, the smoke inlet channel I, the smoke inlet channel II and the insect-proof net form a smoke inlet, a smoke inlet cavity is reserved between the light blocking structure and the fastener, and a darkroom is formed in the light blocking structure; the light guide column in the darkroom and the inner side of the light blocking structure form a reflection area.
Preferably, the side edge of the insect-proof net is in butt joint with the upper cover smoke inlet channel I and the smoke inlet channel II, and the light blocking structure completely covers the smoke inlet channel I and the smoke inlet channel II.
Preferably, the insect-proof net and the light blocking structure are integrally formed.
Preferably, the secondary buckle of the fastener is a self-locking buckle, the gap of the groove on one side of the secondary buckle is larger than the matching amount of the female buckle, and the top of the secondary buckle is heightened to realize the detachment by breaking with hands.
Preferably, the light guide column is arranged on the light emitting side of the isolated light emitting tube, changes the propagation direction of light and enters the receiving area of the receiving tube through primary reflection of the reflecting surface.
Preferably, the isolated light emitting tube and the receiving tube are both arranged on a PCB, a controller and a buzzer are arranged on the PCB, the controller sends light into the darkroom through the isolated light emitting tube, and reflected light is detected through the receiving tube; and when the controller judges that the reflected light is abnormal, the buzzer is started.
Preferably, the PCB board is located I inside the lid all the time, and the PCB board after dismantling the maze alone is hidden all the time in I inside the lid and does not show.
The invention relates to a detection method of a labyrinth smoke detector capable of being independently disassembled and preventing false alarm, which comprises the following steps:
s1: matching the female buckle of the upper cover with the male buckle of the fastener, and assembling the labyrinth between the upper cover and the fastener;
s2: ambient light and large-particle dust are directly fed into the smoke inlet and are isolated from the smoke inlet by the insect-proof net;
s3: water vapor in the air continuously enters the smoke inlet and the smoke inlet cavity and is finally adsorbed on the anti-condensation small column at the top of the darkroom;
s4: flue gas entering darkroom in the air, the light that the leaded light post emission in the darkroom pierces through the flue gas and gets into the receiver tube receiving area through the reflection of light face reflection, and the controller receives reflection light to make as follows the judgement:
if the smoke of the reflected light is lower than the threshold value, judging that no abnormity occurs;
if the smoke of the reflected light is higher than or equal to the threshold value, judging that abnormity occurs, and starting the buzzer.
The beneficial effects of the invention are: the maze smoke detector and the detection method which can be independently disassembled and prevent false alarm adopt the integrally injection-molded maze, can be independently disassembled without disassembling a PCB (printed Circuit Board), and are convenient and fast to disassemble on site; the labyrinth structure capable of preventing false alarm completely blocks a smoke inlet channel of the upper cover through the light blocking structure, wherein a smoke inlet cavity is reserved at the top of the light blocking structure wall and the middle buckle assembly, so that ambient light and large-particle dust can be prevented from directly entering a darkroom; and the top of the maze is provided with a condensation-proof small column.
Drawings
FIG. 1 is a schematic diagram of the present invention in a disassembled state.
Fig. 2 is a schematic structural view of the inventive combination.
Fig. 3 is a cross-sectional view of the invention as a whole.
Fig. 4 is a perspective view of the present invention as a whole.
Fig. 5 is a plan view of the upper cover.
Fig. 6 is a perspective view of the upper cover.
Fig. 7 is a perspective view of the maze.
Fig. 8 is a perspective view of the middle buckle assembly.
In the figure:
1. an upper cover; 11. a cover body I; 12. a cover body II; 13. a reinforcing bridge; 14. a light guide pillar; 15. a smoke inlet channel I; 16. a smoke inlet channel II; 17. a female buckle; 18. mounting grooves;
2. a maze; 21. a body; 22. a condensation-preventing pillar; 23. an insect-proof net; 24. a light blocking structure; 25. a support plate; 26. a light guide cavity;
3. a fastener; 31. covering; 32. a sub-buckle; 33. and (6) screwing.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1:
as shown in figure 1, the invention can be dismantled alone, prevent the smoke detector of 2 labyrinth of false alarm, divide into upper cover 1, labyrinth 2 and fastener 3 sequentially from top to bottom, 2 labyrinth can be dismantled alone and set up in the cavity that 1 upper cover and fastener 3 hold.
As shown in fig. 2 to 4, the separately detachable maze 2 smoke detector for preventing false alarm of the present invention comprises an upper cover 1 and a separately detachable maze; a smoke inlet channel is arranged on the side edge of the upper cover 1 and forms a smoke inlet together with the labyrinth 2 insect-proof net 23; the inside structure 24 that is in the light that sets up of maze 2, the structure 24 that is in the light blocks the upper cover 1 completely and advances the cigarette passageway, and its wall top detains the subassembly with the centre and leaves into the cigarette chamber, can avoid ambient light and large granule dust directly to get into the darkroom, and maze 2 top sets up prevents condensation columella 22.
The invention comprises a labyrinth, an upper cover 1 and a middle buckle component which can be independently disassembled; the side smoke inlet channel of the upper cover 1 and the labyrinth 2 insect-proof net 23 jointly form a smoke inlet channel. The light blocking structure 24 completely blocks the smoke inlet channel of the upper cover 1, wherein a smoke inlet cavity is reserved on the top of the wall of the light blocking structure 24 and the middle buckle component, so that ambient light and large particle dust can be prevented from directly entering a darkroom.
As shown in fig. 5 to 8, the upper cover 1 is divided into an upper cover body i 11, a lower cover body ii 12 and a reinforcing bridge 13 connecting the cover body i 11 and the cover body ii 12, the cover body i 11 extends outwards from the middle of the cover body ii 12 through the reinforcing bridge 13, and a smoke inlet channel i 15 is formed at a gap between the cover body i 11 and the cover body ii 12; the reinforcing bridge 13 is of a double-arch structure, and a gap in the reinforcing bridge 13 forms a smoke inlet channel II 16; a female buckle 17 matched with the fastener 3 is installed on the edge of the lower surface of the cover body II 12, and an installation groove 18 and a light guide column 14 matched with the labyrinth 2 are formed in the inner wall of the cover body I11;
the maze 2 comprises a body 21 which is arranged in a basin-shaped inverted manner, the body 21 is divided into an insect-proof net 23 and a light blocking structure 24 from outside to inside, and the insect-proof net 23 and the light blocking structure 24 are fixed through a support plate 25; a trumpet-shaped light guide cavity 26 is fixedly extended from the support plate 25 to the light blocking structure 24, and the light guide column 14 is accommodated in the light guide cavity 26; the inner wall of the light blocking structure 24 is provided with a light reflecting surface, and the top of the light blocking structure 24 is provided with condensation-proof small columns 22 which are arranged in concentric circles;
the fastener 3 comprises a buckle cover 31, a secondary buckle 32 matched with the primary buckle 17 is arranged at the edge of the buckle cover 31, and a rotary buckle 33 is arranged in the middle of the buckle cover 31;
wherein, the smoke inlet is formed by the smoke inlet channel I15, the smoke inlet channel II 16 and the insect-proof net 23, a smoke inlet cavity is reserved between the light blocking structure 24 and the fastener 3, and a darkroom is formed in the light blocking structure 24; the light guide 14 inside the dark room and the inside of the light blocking structure 24 constitute a reflection area.
The top of the maze 2 is provided with a condensation-proof column 22; the middle buckle is provided with a self-locking buckle matched with the female buckle 17 of the upper cover 1, and the horn-type light guide column 14 is arranged inside the upper cover 1 and is matched with the light guide cavity 26 of the labyrinth 2.
The side edge of the insect-proof net 23 is butted with and completely surrounds the smoke inlet channel of the upper cover 1, and the light blocking structure 24 completely covers the smoke inlet channel of the upper cover 1.
The insect net 23 is integrally formed with the light blocking structure 24.
The inner side of the light blocking structure 24 is provided with a reflection inclined plane to isolate the light emitted by the light emitting tube from once reflecting and entering the receiving area of the receiving tube.
The middle buckle, the upper cover 1 and the labyrinth 2; the middle buckle is provided with a self-locking buckle which is matched with the female buckle 17 of the upper cover 1, and the upper cover 1 is internally provided with a horn-shaped light guide column 14 which is matched and fixed with a light guide cavity 26 of the labyrinth 2.
The gap of the groove on one side of the self-locking buckle is larger than the matching amount of the buckle, and the top of the buckle is heightened to realize the dismounting by breaking with hands; the light guide column 14 is matched with the light guide cavity 26 of the labyrinth 2, and the light guide column 14 and the upper cover 1 are integrally formed in an injection molding mode.
The maze 2 smoke detector and the detection method which can be independently disassembled and prevent false alarm adopt the integrally injection-molded maze 2, can be independently disassembled, do not need to disassemble a PCB (printed Circuit Board), and are convenient and fast to disassemble on site.
Example 2:
in this embodiment, 2 smoke detector in maze can only contain two parts of upper cover 1 and maze 2 according to actual need, and fastener 3 has played and has fixed to maze 2 to and connect the effect of outside anchor point. The turnbuckle 33 on the fastener 3 is used for attachment to an external anchor point. According to the actual requirement, the upper cover 1 can be directly connected with the external fixing point, and the fastener 3 can be omitted in the existing part occasion. The omitted components are still within the protection scope of the present invention.
It should be noted that: the path of the flue gas entry is labyrinth 2 type. This is called labyrinth 2 because the flue gas is not driven straight in length, but rather enters in a tortuous manner. After passing through the smoke inlet channel I15 or the smoke inlet channel II 16, the smoke then crosses the insect-proof net 23 to enter the top of the wall of the light blocking structure 24, and then enters the inner chamber. The whole process is S-shaped entering, similar to maze 2.
The rest of this example is the same as example 1.
Example 3:
as shown in fig. 5 to 6, the upper cover 1 is divided into two parts, namely a cover body i 11 and a cover body ii 12, and a gap between the two parts is used as a window for smoke to enter; according to actual need with 1 split of upper cover for lid I11, lid II 12, lid III etc. again, select according to actual need can, as long as guarantee that there is sufficient flue gas to get into the gap can.
The rest of this example is the same as example 1.
Example 4:
this example presents the probing process of the present invention. The invention comprises the following steps:
s1: matching the female buckle 17 of the upper cover 1 with the male buckle 32 of the fastener 3, so that the labyrinth 2 is assembled between the upper cover 1 and the fastener 3;
s2: ambient light and large-particle dust are directly fed into the smoke inlet and are isolated from the smoke inlet by the insect-proof net 23;
s3: the water vapor in the air continuously enters the smoke inlet and the smoke inlet cavity and is finally adsorbed on the anti-condensation small column 22 at the top of the darkroom;
s4: flue gas in the air gets into the darkroom, and the light that the leaded light post 14 in the darkroom launched pierces through the flue gas and gets into the receiver tube receiving area through the reflection of light surface reflection, and the controller receives the reflection light to make as follows the judgement:
if the smoke of the reflected light is lower than the threshold value, judging that no abnormity occurs;
if the smoke of the reflected light is higher than or equal to the threshold value, judging that abnormity occurs, and starting the buzzer.
The invention can be widely applied to the occasions of smoke detectors, machinery and industrial equipment, coating equipment and fire fighting equipment.
Claims (8)
1. A labyrinth (2) smoke detector capable of being independently disassembled and preventing false alarm is characterized in that the detector is sequentially divided into an upper cover (1), a labyrinth (2) and a fastener (3) from top to bottom, and the labyrinth (2) can be independently disassembled and arranged in a cavity body contained by the upper cover (1) and the fastener (3); wherein:
the upper cover (1) is divided into a cover body I (11) at the upper part, a cover body II (12) at the lower part and a reinforcing bridge (13) for connecting the cover body I (11) and the cover body II (12), the cover body I (11) extends outwards from the middle part of the cover body II (12) through the reinforcing bridge (13), and a gap between the cover body I (11) and the cover body II (12) forms a smoke inlet channel I (15); the reinforcing bridge (13) is of a double-arch structure, and a gap in the reinforcing bridge (13) forms a smoke inlet channel II (16); a female buckle (17) matched with the fastener (3) is installed on the edge of the lower surface of the cover body II (12), and an installation groove (18) and a light guide column (14) matched with the labyrinth (2) are formed in the inner wall of the cover body I (11);
the labyrinth (2) comprises a body (21) which is basin-mounted and inverted, the body (21) is divided into an insect-proof net (23) and a light blocking structure (24) from outside to inside, and the insect-proof net (23) and the light blocking structure (24) are fixed through a support plate (25); a horn-shaped light guide cavity (26) is fixedly extended towards the light blocking structure (24) by the support plate (25), and a light guide column (14) is accommodated in the light guide cavity (26); a light reflecting surface is arranged on the inner wall of the light blocking structure (24), and anti-condensation small columns (22) are arranged on the top of the light blocking structure (24) in a concentric circle manner;
the fastener (3) comprises a buckle cover (31), a sub buckle (32) matched with the female buckle (17) is arranged at the edge of the buckle cover (31), and a rotary buckle (33) is arranged in the middle of the buckle cover (31);
wherein, the smoke inlet is formed by the smoke inlet channel I (15), the smoke inlet channel II (16) and the insect-proof net (23), a smoke inlet cavity is reserved between the light blocking structure (24) and the fastener (3), and a darkroom is formed in the light blocking structure (24); the light guide column (14) in the darkroom and the inner side of the light blocking structure (24) form a reflection area.
2. The labyrinth (2) smoke detector capable of being detached independently and preventing false alarm according to claim 1, wherein the side edge of the insect-proof net (23) is butted with the smoke inlet channel I (15) and the smoke inlet channel II (16) of the upper cover (1), and the light blocking structure (24) completely blocks the smoke inlet channel I (15) and the smoke inlet channel II (16).
3. A separately detachable, false alarm proof labyrinth (2) smoke detector as claimed in claim 1, wherein the insect screen (23) is integrally formed with the light blocking structure (24).
4. The labyrinth (2) smoke detector capable of being detached independently and preventing false alarm according to claim 1, wherein the sub-button (32) of the fastener (3) is a self-locking type button, the gap of the groove on one side of the sub-button is larger than the matching amount of the female button (17), and the top of the sub-button (32) is heightened to realize manual detachment.
5. The labyrinth (2) smoke detector capable of being detached separately and preventing false alarm according to claim 1, wherein the light guide column (14) is arranged on the light emitting side of the isolated light emitting tube, and the light guide column (14) changes the propagation direction of light and enters the receiving area of the receiving tube through the primary reflection of the light reflecting surface.
6. The labyrinth (2) smoke detector capable of being detached separately and preventing false alarm according to claim 5, wherein the isolation luminous tube and the receiving tube are both mounted on a PCB board, a controller and a buzzer are mounted on the PCB board, the controller sends light into a darkroom through the isolation luminous tube and detects reflected light through the receiving tube; and when the controller judges that the reflected light is abnormal, the buzzer is started.
7. The labyrinth (2) smoke detector capable of being detached separately and preventing false alarm according to claim 6, wherein the PCB is always inside the cover I (11), and the PCB detached separately from the labyrinth (2) is always hidden inside the cover I (11) and not exposed.
8. A method for detecting a separately detachable and false alarm-proof smoke detector of a maze (2) according to any one of claims 1-7, which comprises the following steps:
s1: matching a female buckle (17) of the upper cover (1) with a male buckle (32) of the fastener (3) to enable the labyrinth (2) to be assembled between the upper cover (1) and the fastener (3);
s2: ambient light and large-particle dust are directly fed into the smoke inlet and are isolated from the smoke inlet by an insect-proof net (23);
s3: the water vapor in the air continuously enters the smoke inlet and the smoke inlet cavity and is finally adsorbed on the anti-condensation small column (22) at the top of the darkroom;
s4: flue gas in the air gets into the darkroom, and the light that leaded light post (14) emission in the darkroom pierces through the flue gas and gets into the receiving tube receiving area through the reflection of light surface reflection, and the controller receives the reflected light to make as follows the judgement:
if the smoke of the reflected light is lower than the threshold value, judging that no abnormity occurs;
if the smoke of the reflected light is higher than or equal to the threshold value, judging that abnormity occurs, and starting the buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210511733.6A CN114913666A (en) | 2022-05-11 | 2022-05-11 | Labyrinth smoke detector capable of being detached independently and preventing false alarm and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210511733.6A CN114913666A (en) | 2022-05-11 | 2022-05-11 | Labyrinth smoke detector capable of being detached independently and preventing false alarm and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114913666A true CN114913666A (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210511733.6A Pending CN114913666A (en) | 2022-05-11 | 2022-05-11 | Labyrinth smoke detector capable of being detached independently and preventing false alarm and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114913666A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201638343U (en) * | 2010-02-11 | 2010-11-17 | 河北北大青鸟环宇消防设备有限公司 | Photoelectric smoke detector |
| CN205722281U (en) * | 2016-06-02 | 2016-11-23 | 四川赛科安全技术有限公司 | Stand alone type smoke detector |
| CN207852031U (en) * | 2017-12-26 | 2018-09-11 | 深圳市泛海三江电子股份有限公司 | A kind of smoke detector |
| CN110939921A (en) * | 2019-12-18 | 2020-03-31 | 浙江中辰城市应急服务管理有限公司 | Smoke collecting lampshade with dustproof insect and water mist functions |
| CN111080960A (en) * | 2020-01-20 | 2020-04-28 | 上海中环科仪消防报警设备有限公司 | Smoke detection device with light guide scattering structure |
| CN113808365A (en) * | 2021-03-10 | 2021-12-17 | 勾利金 | Light-reducing point type photoelectric smoke-sensing detector labyrinth and detector |
-
2022
- 2022-05-11 CN CN202210511733.6A patent/CN114913666A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201638343U (en) * | 2010-02-11 | 2010-11-17 | 河北北大青鸟环宇消防设备有限公司 | Photoelectric smoke detector |
| CN205722281U (en) * | 2016-06-02 | 2016-11-23 | 四川赛科安全技术有限公司 | Stand alone type smoke detector |
| CN207852031U (en) * | 2017-12-26 | 2018-09-11 | 深圳市泛海三江电子股份有限公司 | A kind of smoke detector |
| CN110939921A (en) * | 2019-12-18 | 2020-03-31 | 浙江中辰城市应急服务管理有限公司 | Smoke collecting lampshade with dustproof insect and water mist functions |
| CN111080960A (en) * | 2020-01-20 | 2020-04-28 | 上海中环科仪消防报警设备有限公司 | Smoke detection device with light guide scattering structure |
| CN113808365A (en) * | 2021-03-10 | 2021-12-17 | 勾利金 | Light-reducing point type photoelectric smoke-sensing detector labyrinth and detector |
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