CN109448305A - A kind of smoke detector that forward scattering is combined with retroreflection - Google Patents
A kind of smoke detector that forward scattering is combined with retroreflection Download PDFInfo
- Publication number
- CN109448305A CN109448305A CN201811533592.8A CN201811533592A CN109448305A CN 109448305 A CN109448305 A CN 109448305A CN 201811533592 A CN201811533592 A CN 201811533592A CN 109448305 A CN109448305 A CN 109448305A
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- CN
- China
- Prior art keywords
- fixing device
- labyrinth
- tube fixing
- retroreflection
- transmitting tube
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- 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
- G08B17/107—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 for detecting light-scattering due to smoke
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The invention discloses the smoke detectors that a kind of forward scattering is combined with retroreflection, including upper cover and bottom cover, upper cover and bottom cover, which fasten, is equipped with labyrinth in the cavity to be formed, reception pipe accommodating cavity is equipped in labyrinth, transmitting tube accommodating cavity I and transmitting tube accommodating cavity II, metal net mask is covered with outside labyrinth, labyrinth is fixed in cigarette sense on seat, seat is equipped with light-guiding pillar in cigarette sense, the bottom snap of seat has circuit board in cigarette sense, circuit board is equipped with the reception tube fixing device of one reception pipe and two transmitting tubes of placement, emit tube fixing device I and transmitting tube fixing device II, the angle for receiving tube fixing device and emitting between tube fixing device I is 130 °, the angle for receiving tube fixing device and emitting between tube fixing device II is 50 °.The utility model has the advantages that used two transmitting tubes, one reception pipe and constituted reception pipe simultaneously and forward scattering and a reception pipe that transmitting tube angle is 50 degree and the retroreflection that transmitting tube angle is 130 degree, have to the detection of white cigarette and black smoke equally high sensitive.
Description
Technical field
The present invention relates to a kind of fire-fighting monitoring technical field, relates in particular to a kind of forward scattering and mutually tied with retroreflection
The smoke detector of conjunction.
Background technique
Key component generally has infrared transmitting tube and infrared receiving tube inside traditional smoke detector, using each
The inside that the labyrinth of formula various kinds allows extraneous light to cannot be introduced into detector using the method for formula of adding lustre to.Labyrinth and have several through-holes
Metal net mask can completely cut off the water mist and dust of a part, but still have a certain amount of water mist and dust can be to the prison of detector
Survey impacts, and can be divided into forward scattering and back scattering (reflection) by the distribution angle of transmitting tube and reception pipe.
The infrared transmitting tube of forward scatter-type smoke detector and the angle of infrared receiving tube are less than 90 degree, while forward direction dissipates
Emitting smoke detector is very sharp to the reaction of white cigarette, can respond alarm in time, but to the reaction of grey jet-black cigarette with regard to inadequate
It is sensitive；The infrared transmitting tube of back scattering (reflection) type smoke detector and the angle of infrared receiving tube are greater than 90 degree, Neng Goujian
The infrared light for surveying smoke particle surface reflection, is not influenced, therefore have good sensitivity to black smoke by smoke particle color,
But the shape of smoke particle and surface flatness will affect the intensity of reflected light.Current existing smoke detector is red using one
Outer transmitting tube and an infrared receiving tube use two infrared transmitting tubes and an infrared receiving tube, to scattered before single composition
Penetrate or back scattering (reflection), due to can not fully by air water mist and dust completely cut off except labyrinth, so meeting
The influence of monitoring inaccuracy is caused to real-time monitoring.
Summary of the invention
For the problems in the relevant technologies, the present invention proposes a kind of smoke detection that forward scattering is combined with retroreflection
Device solves the problems, such as existing smoke detector to the limitation of Smoke Detection.
In order to achieve the above technical purposes, the technical scheme is that it is such:
A kind of smoke detector that forward scattering is combined with retroreflection, including upper cover and bottom cover, the upper cover and bottom cover clasp
It closes and is equipped with labyrinth in the cavity formed, be equipped with reception pipe accommodating cavity, transmitting tube accommodating cavity I and transmitting tube accommodating cavity in the labyrinth
II, metal net mask is covered with outside the labyrinth, and the labyrinth is fixed in cigarette sense on seat, and seat is equipped with and labyrinth in the cigarette sense
The light-guiding pillar of mating connection, the bottom snap of seat has circuit board in the cigarette sense, and the circuit board is equipped with one reception of placement
Pipe and the reception tube fixing devices of two transmitting tubes, transmitting tube fixing device I and transmitting tube fixing device II, the receptions tube fixing device and
The angle emitted between tube fixing device I is 130 °, and the angle for receiving tube fixing device and emitting between tube fixing device II is
50°。
Further, the lower end rotation of the bottom cover is connected with pedestal, and the pedestal is interior to be fixed with spring leaf by screw.
Further, the circuit board bottom is equipped with mounting post, and the bottom cover is equipped with and matches with the mounting post
Slot.
Further, the metal net mask in a ring structure and be equipped with multiple through-holes.
Further, two light-guiding pillars being cooperatively connected with labyrinth are symmetrically arranged in the cigarette sense on seat.
Beneficial effects of the present invention: using the tooling, can be realized by replacing various sizes of pneumatic scroll chuck
In the connecting rob bushing installment work of all specifications, it can improve working efficiency, and reduce maintenance cost, also reduce simultaneously
The requirement of maintenance operation personnel, can accomplish zero working experience person all using the tooling can realize disposable accurate installation；
It is straight line cylinder, pneumatic scroll chuck, line slide rail and the 3-position 4-way gas that mainly first device is in industry used in the tooling
It starts rotary valve, component is low in cost, practical.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of point of smoke detector that forward scattering is combined with retroreflection according to embodiments of the present invention
Solution structure schematic diagram；
Fig. 2 is the cross-sectional view in the labyrinth according to embodiments of the present invention.
In figure:
1, upper cover；2, labyrinth；3, metal net mask；4, light-guiding pillar；5, seat in cigarette sense；6, tube fixing device is received；7, transmitting tube is fixed
Frame I；8, emit tube fixing device II；9, circuit board；10, bottom cover；11, screw；12, spring leaf；13, pedestal；14, transmitting tube accommodates
Chamber I；15, reception pipe accommodating cavity；16, transmitting tube accommodating cavity II.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
As shown in Figs. 1-2, the smoke detector that a kind of forward scattering is combined with retroreflection, including upper cover 1 and bottom cover
10, the upper cover 1 is fastened with bottom cover 10 is equipped with labyrinth 2 in the cavity formed, be equipped in the labyrinth 2 reception pipe accommodating cavity 15,
Transmitting tube accommodating cavity I 14 and transmitting tube accommodating cavity II 16, the labyrinth 2 are covered with metal net mask 3 outside, and the labyrinth 2 is fixed on
In cigarette sense on seat 5, seat 5 is equipped with the light-guiding pillar 4 being cooperatively connected with labyrinth 2 in the cigarette sense, the bottom button of seat 5 in the cigarette sense
Conjunction has circuit board 9, and the circuit board 9 is equipped with reception tube fixing device 6, the transmitting tube of one reception pipe and two transmitting tubes of placement
Fixed frame I 7 and transmitting tube fixing device II 8, the angle for receiving tube fixing device 6 and emitting between tube fixing device I 7 is 130 °,
The angle for receiving tube fixing device 6 and emitting between tube fixing device II 8 is 50 °.
In the present embodiment, the lower end rotation of the bottom cover 10 is connected with pedestal 13, passes through screw 11 in the pedestal 13
It is fixed with spring leaf 12.
In the present embodiment, 9 bottom of circuit board is equipped with mounting post, and the bottom cover 10 is equipped with and the mounting post phase
The slot of cooperation.
In the present embodiment, the metal net mask 3 in a ring structure and be equipped with multiple through-holes.
In the present embodiment, two light-guiding pillars 4 being cooperatively connected with labyrinth 2 are symmetrically arranged in the cigarette sense on seat 5.
When in use, bottom cover 10 is fixed on the wall, then bottom cover 10 is rotated clockwise and buckles into pedestal 13, need to tear open
It need to can only be taken off to rotation counterclockwise when unloading.
Under normal circumstances, due to being placed in the accommodating cavity in labyrinth 2, reception pipe not will receive hair for transmitting tube and reception pipe
The light for penetrating pipe sending, when there is smoke particle to enter labyrinth cavity, the light that transmitting tube issues can be received by scattering and reflection
Pipe receives, to convert light signals into electric signal, when reception light reaches setting value certainly, the smoke detector can issue report
Alert signal, for the partial size of dust in air within 1 ~ 100 μm, the partial size of water mist causes the comburant of fire within 2 ~ 200 μm
White cigarette flue dust is within 0.01 ~ 5 μm, and black smoke flue dust is within 1 ~ 20 μm, and since the partial size of dust and water mist is bigger, forward direction dissipates
Penetrate low for dust and water mist sensitivity, circuit board is analyzed and processed dust and water mist by retroreflection, to distinguish powder
The flue dust that dirt and water mist and fire comburant generate, achievees the purpose that accurate measurements；The advantage of the smoke detector: two transmittings
Pipe and a reception pipe are and at the same time constitute forward scattering and a reception pipe that a reception pipe is 50 degree with transmitting tube angle
The retroreflection for being 130 degree with transmitting tube angle, this method can increase the sensitivity to white cigarette, black smoke, distinguish dust and
The flue dust that water mist and fire comburant generate accurately and reliably detects whether fire occurs.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. the smoke detector that a kind of forward scattering is combined with retroreflection, which is characterized in that including upper cover (1) and bottom cover
(10), the upper cover (1) and bottom cover (10), which fasten in the cavity formed, is equipped with labyrinth (2), and reception pipe is equipped in the labyrinth (2)
Accommodating cavity (15), transmitting tube accommodating cavity I (14) and transmitting tube accommodating cavity II (16), the labyrinth (2) are covered with metal net mask outside
(3), the labyrinth (2) is fixed in cigarette sense on seat (5), and seat (5) is equipped with and leads with what labyrinth (2) were cooperatively connected in the cigarette sense
Light beam (4), the bottom snap of seat (5) has circuit board (9) in the cigarette sense, and the circuit board (9) is equipped with one reception of placement
Reception tube fixing device (6), transmitting tube fixing device I (7) and transmitting tube fixing device II (8) of pipe and two transmitting tubes, the reception
Angle between tube fixing device (6) and transmitting tube fixing device I (7) is 130 °, and the reception tube fixing device (6) is fixed with transmitting tube
Angle between frame II (8) is 50 °.
2. the smoke detector that a kind of forward scattering according to claim 1 is combined with retroreflection, which is characterized in that
The lower end rotation of the bottom cover (10) is connected with pedestal (13), is fixed with spring leaf by screw (11) in the pedestal (13)
(12).
3. the smoke detector that a kind of forward scattering according to claim 1 is combined with retroreflection, which is characterized in that
Circuit board (9) bottom is equipped with mounting post, and the bottom cover (10) is equipped with the slot matched with the mounting post.
4. the smoke detector that a kind of forward scattering according to claim 1 is combined with retroreflection, which is characterized in that
The metal net mask (3) in a ring structure and be equipped with multiple through-holes.
5. the smoke detector that a kind of forward scattering according to claim 1 is combined with retroreflection, which is characterized in that
Two light-guiding pillars (4) being cooperatively connected with labyrinth (2) are symmetrically arranged in the cigarette sense on seat (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533592.8A CN109448305A (en) | 2018-12-14 | 2018-12-14 | A kind of smoke detector that forward scattering is combined with retroreflection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533592.8A CN109448305A (en) | 2018-12-14 | 2018-12-14 | A kind of smoke detector that forward scattering is combined with retroreflection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109448305A true CN109448305A (en) | 2019-03-08 |
Family
ID=65559048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811533592.8A Pending CN109448305A (en) | 2018-12-14 | 2018-12-14 | A kind of smoke detector that forward scattering is combined with retroreflection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109448305A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113345200A (en) * | 2021-05-10 | 2021-09-03 | 汉威科技集团股份有限公司 | Automatic fire smoke identification and alarm method and device |
| CN114038152A (en) * | 2021-10-12 | 2022-02-11 | 漳州玖神网络科技有限公司 | Wisdom garden fire control early warning device |
| CN114463925A (en) * | 2021-12-31 | 2022-05-10 | 杭州拓深科技有限公司 | Fire detection alarm |
-
2018
- 2018-12-14 CN CN201811533592.8A patent/CN109448305A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113345200A (en) * | 2021-05-10 | 2021-09-03 | 汉威科技集团股份有限公司 | Automatic fire smoke identification and alarm method and device |
| CN113345200B (en) * | 2021-05-10 | 2023-03-14 | 汉威科技集团股份有限公司 | Automatic fire smoke identification and alarm method and device |
| CN114038152A (en) * | 2021-10-12 | 2022-02-11 | 漳州玖神网络科技有限公司 | Wisdom garden fire control early warning device |
| CN114038152B (en) * | 2021-10-12 | 2023-07-25 | 杭州云起实业有限公司 | Wisdom garden fire control early warning device |
| CN114463925A (en) * | 2021-12-31 | 2022-05-10 | 杭州拓深科技有限公司 | Fire detection alarm |
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