CN205786299U - A kind of labyrinth of smoke alarm - Google Patents
A kind of labyrinth of smoke alarm Download PDFInfo
- Publication number
- CN205786299U CN205786299U CN201620453783.3U CN201620453783U CN205786299U CN 205786299 U CN205786299 U CN 205786299U CN 201620453783 U CN201620453783 U CN 201620453783U CN 205786299 U CN205786299 U CN 205786299U
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- hole
- transmitting tube
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- light
- tube
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- 239000000779 smoke Substances 0.000 title claims abstract description 52
- 230000003287 optical effect Effects 0.000 claims abstract description 25
- 230000001154 acute effect Effects 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 235000019504 cigarettes Nutrition 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- Fire-Detection Mechanisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses the labyrinth of a kind of smoke alarm, including optical dark room, infrared transmitting tube and infrared receiving tube, infrared transmitting tube and infrared receiving tube are arranged in optical dark room, infrared transmitting tube is horizontally disposed, infrared receiving tube is vertically arranged, the outside of infrared receiving tube is provided with cover body, the first through hole and the second through hole it is symmetrically arranged with on cover body, angle between light and the axis of the first through hole that infrared transmitting tube is launched is obtuse angle, angle between light and the axis of the second through hole that infrared transmitting tube is launched is acute angle, the light that infrared transmitting tube is launched is by being refracted on infrared receiving tube after the first through hole or the second through hole；All can sense smog in angle region in advantage is the angle region between light and the axis of the first through hole that infrared transmitting tube is launched and between light and the axis of the second through hole of infrared transmitting tube transmitting, sensitivity is higher.
Description
Technical field
This utility model relates to a kind of labyrinth, especially relates to the labyrinth of a kind of smoke alarm.
Background technology
Smoke alarm, as the detection device in safety-security area, is increasingly subject to people's attention, and achieves extensively
Application.Labyrinth is the critical function parts of smoke alarm, and the quality of its quality directly determines the matter of smoke alarm
Amount.The labyrinth of existing smoke alarm generally includes optical dark room, infrared transmitting tube and infrared receiving tube, optical dark room
Smog can be made to enter in it and stop external environmental light to enter in it, and infrared transmitting tube and infrared receiving tube are arranged on Optical Dark Solitary Pulse
Indoor, and the refraction angle emitting light into infrared receiving tube of infrared transmitting tube more than 90 degree (generally at 135 DEG C of angles
Left and right), its structure chart is as shown in Figure 1.
But the absorptance that the labyrinth of existing smoke alarm there is problems in that black smoke is big compared with white cigarette so that from infrared
The light intensity that transmitting tube is refracted to infrared receiving tube is less, and additionally the particle diameter of black smoke is big compared with white cigarette, the black smoke reflection to light
Energy is concentrated mainly in refraction angle region (front edge regions), when outside black smoke is in refraction angle region, infrared connects
Closed tube is difficult to receive optical signal, and the labyrinth sensitivity thus causing existing smoke alarm is the highest.
Summary of the invention
Technical problem to be solved in the utility model is to provide the labyrinth of the higher smoke alarm of a kind of sensitivity.
The technical scheme that the above-mentioned technical problem of this utility model solution is used is: the labyrinth of a kind of smoke alarm, including
Optical dark room, infrared transmitting tube and infrared receiving tube, described infrared transmitting tube and described infrared receiving tube are arranged on institute
In the optical dark room stated, described infrared transmitting tube is horizontally disposed, and described infrared receiving tube vertically sets
Putting, the outside of described infrared receiving tube is provided with cover body, described cover body is symmetrically arranged with the first through hole and second and leads to
Hole, the angle between light and the axis of the first described through hole that described infrared transmitting tube is launched is obtuse angle, described
Angle between light and the axis of the second described through hole that infrared transmitting tube is launched is acute angle, described infrared transmitting tube
The light launched is by being refracted on described infrared receiving tube after the first described through hole or the second described through hole.
Angle between light and the axis of the first described through hole that described infrared transmitting tube is launched is 95 degree～155
Degree, the angle between light and the axis of the second described through hole that described infrared transmitting tube is launched is 15 degree～60 degree.
This structure ensures bigger smoke sensing coverage rate.
Angle between light and the axis of the first described through hole that described infrared transmitting tube is launched is 135 degree, described
Infrared transmitting tube launch light and the axis of the second described through hole between angle be 30 degree.
Described optical dark room includes toroidal shell, the base plate being arranged on described toroidal shell bottom and is arranged on described
The cover plate on toroidal shell summit, described toroidal shell is arranged at intervals with multilamellar smoke path, each layer of institute from top to bottom
The smoke path stated is spaced by the smoke inlet of multiple " inverted V-shapeds " forms along a circle, and described infrared receiving tube is arranged
On described base plate.In this structure, the smoke inlet of " inverted V-shaped " is within stoping external environmental light entrance optical dark room
On the basis of smog can be made to enter smoothly in optical dark room, improve sensitivity further.
First annular housing and the second toroidal shell that described toroidal shell is arranged by split form, the second described annular
Housing is positioned at described first annular housing, and described base plate is arranged on the bottom of described first annular housing, described
Cover plate be arranged on the upper end of the second described toroidal shell, the smoke inlet of described " inverted V-shaped " is by the most upwards
The first square opening tilted and the second the most downward-sloping square opening composition, the first described square opening is positioned at described
First annular housing on, the second described square opening is positioned on the second described toroidal shell.This structure fabrication processes letter
Single, easy for installation.
Described cover plate is just to concave downward at described infrared receiving tube.This structure can make the cigarette in entrance optical dark room
Mist enters infrared induction region as far as possible, improves sensitivity further.
Compared with prior art, the utility model has the advantage of by infrared transmitting tube is arranged horizontally at optics
In darkroom, infrared receiving tube is arranged vertically in optical dark room, the outside of infrared receiving tube is provided with cover body,
The first through hole and the second through hole it is symmetrically arranged with, between light and the axis of the first through hole that infrared transmitting tube is launched on cover body
Angle be obtuse angle, infrared transmitting tube launch light and the axis of the second through hole between angle be acute angle, infrared emission
The light that pipe is launched, by being refracted on infrared receiving tube after the first through hole or the second through hole, is thus sent out at infrared transmitting tube
In angle region between light and the axis of the first through hole penetrated and the light launched of infrared transmitting tube and the second through hole
All can sense smog in angle region between axis, sensitivity is higher.
Accompanying drawing explanation
Fig. 1 is the structure chart in the labyrinth of existing smoke alarm；
Fig. 2 is the sectional view in the labyrinth of smoke alarm of the present utility model；
Fig. 3 is the exploded perspective view one in the labyrinth of smoke alarm of the present utility model；
Fig. 4 is the exploded perspective view two in the labyrinth of smoke alarm of the present utility model；
Fig. 5 is the decomposition side view in the labyrinth of smoke alarm of the present utility model；
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
Embodiment one: as shown in Figure 2 to 4, the labyrinth of a kind of smoke alarm, including optical dark room 1, infrared emission
Pipe 2 and infrared receiving tube 3, infrared transmitting tube 2 and infrared receiving tube 3 are arranged in optical dark room 1, infrared transmitting tube
2 is horizontally disposed, and infrared receiving tube 3 is vertically arranged, and the outside of infrared receiving tube 3 is provided with cover body 4,
The first through hole 41 and the second through hole 42, the light of infrared transmitting tube 2 transmitting and the first through hole it is symmetrically arranged with on cover body 4
Angle between the axis of 41 is obtuse angle, the folder between light and the axis of the second through hole 42 that infrared transmitting tube 2 is launched
Angle is acute angle, and the light that infrared transmitting tube 2 is launched is by being refracted to infrared connecing after the first through hole 41 or the second through hole 42
In closed tube 3.
In the present embodiment, the angle between light and the axis of the first through hole 41 that infrared transmitting tube 2 is launched is 155 degree,
Angle between light and the axis of the second through hole 42 that infrared transmitting tube 2 is launched is 15 degree.
In the present embodiment, optical dark room 1 includes toroidal shell, the base plate 5 being arranged on toroidal shell bottom and is arranged on ring
The cover plate 6 on shape housing summit, toroidal shell is arranged at intervals with multilamellar smoke path, each layer of smoke path from top to bottom
Being spaced by the smoke inlet 7 of multiple " inverted V-shapeds " form along a circle, infrared receiving tube 3 is arranged on base plate 5.
In the present embodiment, first annular housing 8 and the second toroidal shell 9 that toroidal shell is arranged by split form, and second
Toroidal shell 9 is positioned at first annular housing 8, and base plate 5 is arranged on the bottom of first annular housing 8, and cover plate 6 is arranged
In the upper end of the second toroidal shell 9, the smoke inlet 7 of " inverted V-shaped " is by the most acclivitous first square opening 10
The second the most downward-sloping square opening 11 forms, and the first square opening 10 is positioned on first annular housing 8, the
Two square openings 11 are positioned on the second toroidal shell 9.
In the present embodiment, cover plate 6 is just to concave downward at infrared receiving tube 3.
Embodiment two: as shown in Figure 2 to 4, the labyrinth of a kind of smoke alarm, including optical dark room 1, infrared emission
Pipe 2 and infrared receiving tube 3, infrared transmitting tube 2 and infrared receiving tube 3 are arranged in optical dark room 1, infrared transmitting tube
2 is horizontally disposed, and infrared receiving tube 3 is vertically arranged, and the outside of infrared receiving tube 3 is provided with cover body 4,
The first through hole 41 and the second through hole 42, the light of infrared transmitting tube 2 transmitting and the first through hole it is symmetrically arranged with on cover body 4
Angle between the axis of 41 is obtuse angle, the folder between light and the axis of the second through hole 42 that infrared transmitting tube 2 is launched
Angle is acute angle, and the light that infrared transmitting tube 2 is launched is by being refracted to infrared connecing after the first through hole 41 or the second through hole 42
In closed tube 3.
In the present embodiment, the angle between light and the axis of the first through hole 41 that infrared transmitting tube 2 is launched is 135 degree,
Angle between light and the axis of the second through hole 42 that infrared transmitting tube 2 is launched is 30 degree.
In the present embodiment, optical dark room 1 includes toroidal shell, the base plate 5 being arranged on toroidal shell bottom and is arranged on ring
The cover plate 6 on shape housing summit, toroidal shell is arranged at intervals with multilamellar smoke path, each layer of smoke path from top to bottom
Being spaced by the smoke inlet 7 of multiple " inverted V-shapeds " form along a circle, infrared receiving tube 3 is arranged on base plate 5.
In the present embodiment, first annular housing 8 and the second toroidal shell 9 that toroidal shell is arranged by split form, and second
Toroidal shell 9 is positioned at first annular housing 8, and base plate 5 is arranged on the bottom of first annular housing 8, and cover plate 6 is arranged
In the upper end of the second toroidal shell 9, the smoke inlet 7 of " inverted V-shaped " is by the most acclivitous first square opening 10
The second the most downward-sloping square opening 11 forms, and the first square opening 10 is positioned on first annular housing 8, the
Two square openings 11 are positioned on the second toroidal shell 9.
In the present embodiment, cover plate 6 is just to concave downward at infrared receiving tube 3.
Embodiment three: as shown in Figure 2 to 4, the labyrinth of a kind of smoke alarm, including optical dark room 1, infrared emission
Pipe 2 and infrared receiving tube 3, infrared transmitting tube 2 and infrared receiving tube 3 are arranged in optical dark room 1, infrared transmitting tube
2 is horizontally disposed, and infrared receiving tube 3 is vertically arranged, and the outside of infrared receiving tube 3 is provided with cover body 4,
The first through hole 41 and the second through hole 42, the light of infrared transmitting tube 2 transmitting and the first through hole it is symmetrically arranged with on cover body 4
Angle between the axis of 41 is obtuse angle, the folder between light and the axis of the second through hole 42 that infrared transmitting tube 2 is launched
Angle is acute angle, and the light that infrared transmitting tube 2 is launched is by being refracted to infrared connecing after the first through hole 41 or the second through hole 42
In closed tube 3.
In the present embodiment, the angle between light and the axis of the first through hole 41 that infrared transmitting tube 2 is launched is 95 degree,
Angle between light and the axis of the second through hole 42 that infrared transmitting tube 2 is launched is 60 degree.
In the present embodiment, optical dark room 1 includes toroidal shell, the base plate 5 being arranged on toroidal shell bottom and is arranged on ring
The cover plate 6 on shape housing summit, toroidal shell is arranged at intervals with multilamellar smoke path, each layer of smoke path from top to bottom
Being spaced by the smoke inlet 7 of multiple " inverted V-shapeds " form along a circle, infrared receiving tube 3 is arranged on base plate 5.
In the present embodiment, first annular housing 8 and the second toroidal shell 9 that toroidal shell is arranged by split form, and second
Toroidal shell 9 is positioned at first annular housing 8, and base plate 5 is arranged on the bottom of first annular housing 8, and cover plate 6 is arranged
In the upper end of the second toroidal shell 9, the smoke inlet 7 of " inverted V-shaped " is by the most acclivitous first square opening 10
The second the most downward-sloping square opening 11 forms, and the first square opening 10 is positioned on first annular housing 8, the
Two square openings 11 are positioned on the second toroidal shell 9.
In the present embodiment, cover plate 6 is just to concave downward at infrared receiving tube 3.
Claims (6)
1. a labyrinth for smoke alarm, including optical dark room, infrared transmitting tube and infrared receiving tube, described is infrared
Transmitting tube and described infrared receiving tube are arranged in described optical dark room, it is characterised in that described infrared transmitting tube edge
Horizontally arranged, described infrared receiving tube is vertically arranged, and the outside of described infrared receiving tube is provided with cover
Body, described cover body is symmetrically arranged with the first through hole and the second through hole, the light of described infrared transmitting tube transmitting and institute
Angle between the axis of the first through hole stated is obtuse angle, and the light that described infrared transmitting tube is launched leads to described second
Angle between the axis in hole is acute angle, and the light that described infrared transmitting tube is launched is by the first described through hole or institute
It is refracted on described infrared receiving tube after the second through hole stated.
The labyrinth of a kind of smoke alarm the most according to claim 1, it is characterised in that described infrared transmitting tube is sent out
Angle between light and the axis of the first described through hole penetrated is 95 degree～155 degree, and described infrared transmitting tube is launched
Light and the axis of the second described through hole between angle be 15 degree～60 degree.
The labyrinth of a kind of smoke alarm the most according to claim 2, it is characterised in that described infrared transmitting tube is sent out
Angle between light and the axis of the first described through hole penetrated is 135 degree, the light that described infrared transmitting tube is launched
And the angle between the axis of the second described through hole is 30 degree.
The labyrinth of a kind of smoke alarm the most according to claim 1, it is characterised in that described optical dark room includes
Toroidal shell, it is arranged on the base plate of described toroidal shell bottom and is arranged on the cover plate on described toroidal shell summit, institute
Be arranged at intervals with multilamellar smoke path on the toroidal shell stated from top to bottom, the smoke path described in each layer by multiple "
V-arrangement " smoke inlet be spaced form along a circle, described infrared receiving tube is arranged on described base plate.
The labyrinth of a kind of smoke alarm the most according to claim 4, it is characterised in that described toroidal shell is by dividing
First annular housing that body is arranged and the second toroidal shell composition, the second described toroidal shell is positioned at described first annular
In housing, described base plate is arranged on the bottom of described first annular housing, and described cover plate is arranged on described second
The upper end of toroidal shell, the smoke inlet of described " inverted V-shaped " is by the most acclivitous first square opening with from outward
To interior the second downward-sloping square opening composition, the first described square opening is positioned on described first annular housing, described
The second square opening be positioned on the second described toroidal shell.
The labyrinth of a kind of smoke alarm the most according to claim 4, it is characterised in that described cover plate is just to described
Infrared receiving tube at concave downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620453783.3U CN205786299U (en) | 2016-05-18 | 2016-05-18 | A kind of labyrinth of smoke alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620453783.3U CN205786299U (en) | 2016-05-18 | 2016-05-18 | A kind of labyrinth of smoke alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205786299U true CN205786299U (en) | 2016-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620453783.3U Active CN205786299U (en) | 2016-05-18 | 2016-05-18 | A kind of labyrinth of smoke alarm |
Country Status (1)
| Country | Link |
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| CN (1) | CN205786299U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516396A (en) * | 2017-09-05 | 2017-12-26 | 深圳市泰和安科技有限公司 | A kind of two-way photoelectric smoke sensor |
| CN108564759A (en) * | 2018-05-29 | 2018-09-21 | 北大青鸟环宇消防设备股份有限公司 | Flue gas labyrinth |
| WO2018205849A1 (en) * | 2017-05-12 | 2018-11-15 | 浙江恒洲电子实业有限公司 | Labyrinth structure for smoke detector and smoke detection method therefor |
| CN110718038A (en) * | 2019-11-08 | 2020-01-21 | 深圳市泛海三江电子股份有限公司 | A Novel Labyrinth Structure and Photoelectric Smoke Detector for Preventing False Alarms |
| TWI695350B (en) * | 2017-12-15 | 2020-06-01 | 美商美國亞德諾半導體公司 | Apparatus and method for detecting smoke within compact footprint detector |
| US10809173B2 (en) | 2017-12-15 | 2020-10-20 | Analog Devices, Inc. | Smoke detector chamber boundary surfaces |
| US10921367B2 (en) | 2019-03-06 | 2021-02-16 | Analog Devices, Inc. | Stable measurement of sensors methods and systems |
| USD918756S1 (en) | 2018-11-06 | 2021-05-11 | Analog Devices, Inc. | Smoke detector boundary |
| USD920825S1 (en) | 2018-11-06 | 2021-06-01 | Analog Devices, Inc. | Smoke detector chamber |
| US11788942B2 (en) | 2017-12-15 | 2023-10-17 | Analog Devices, Inc. | Compact optical smoke detector system and apparatus |
| US11796445B2 (en) | 2019-05-15 | 2023-10-24 | Analog Devices, Inc. | Optical improvements to compact smoke detectors, systems and apparatus |
| US12211370B2 (en) | 2018-12-02 | 2025-01-28 | Analog Devices, Inc. | Fire detection system |
-
2016
- 2016-05-18 CN CN201620453783.3U patent/CN205786299U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018205849A1 (en) * | 2017-05-12 | 2018-11-15 | 浙江恒洲电子实业有限公司 | Labyrinth structure for smoke detector and smoke detection method therefor |
| CN107516396A (en) * | 2017-09-05 | 2017-12-26 | 深圳市泰和安科技有限公司 | A kind of two-way photoelectric smoke sensor |
| TWI695350B (en) * | 2017-12-15 | 2020-06-01 | 美商美國亞德諾半導體公司 | Apparatus and method for detecting smoke within compact footprint detector |
| US10809173B2 (en) | 2017-12-15 | 2020-10-20 | Analog Devices, Inc. | Smoke detector chamber boundary surfaces |
| US11788942B2 (en) | 2017-12-15 | 2023-10-17 | Analog Devices, Inc. | Compact optical smoke detector system and apparatus |
| CN108564759B (en) * | 2018-05-29 | 2024-02-06 | 青鸟消防股份有限公司 | Flue gas labyrinth cover |
| CN108564759A (en) * | 2018-05-29 | 2018-09-21 | 北大青鸟环宇消防设备股份有限公司 | Flue gas labyrinth |
| USD918756S1 (en) | 2018-11-06 | 2021-05-11 | Analog Devices, Inc. | Smoke detector boundary |
| USD920825S1 (en) | 2018-11-06 | 2021-06-01 | Analog Devices, Inc. | Smoke detector chamber |
| US12211370B2 (en) | 2018-12-02 | 2025-01-28 | Analog Devices, Inc. | Fire detection system |
| US10921367B2 (en) | 2019-03-06 | 2021-02-16 | Analog Devices, Inc. | Stable measurement of sensors methods and systems |
| US11796445B2 (en) | 2019-05-15 | 2023-10-24 | Analog Devices, Inc. | Optical improvements to compact smoke detectors, systems and apparatus |
| CN110718038A (en) * | 2019-11-08 | 2020-01-21 | 深圳市泛海三江电子股份有限公司 | A Novel Labyrinth Structure and Photoelectric Smoke Detector for Preventing False Alarms |
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