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Correlation type smoke sensor

A smoke sensor, through-beam technology, applied in the field of through-beam smoke sensor, optical fiber smoke automatic alarm, can solve the problems of unsafe, uncomfortable installation, difficulty in detecting smoke, etc.

Pending Publication Date: 2019-05-28
铜陵晶点光科有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problems of photoelectric smoke detectors are: ①Because of the electric signal, it is not suitable for installation in places with flammable and explosive and high electromagnetic radiation intensity, and there are certain safety hazards ②Electronic components are easy to age, and false alarms are easy to occur after aging Even failure ③The detector structure is complex, and the maintenance cost is high in the later period ④Because it cannot resist ambient light interference, the ambient light is blocked by the complex probe design, but it makes it difficult to detect smoke, it is difficult to remove dust in the later stage, and the sensitivity is not high, etc. defect
[0004] The problems of ion smoke detectors are: ①Because of the electrical signal, it is not suitable for installation in places with flammable, explosive and high electromagnetic radiation intensity, and there are certain safety hazards ②Electronic components are easy to age, and false alarms are easy to occur after aging Even failure ③ complex structure, large volume, inconvenient installation, high production and maintenance costs ④ radioactive elements are used as ion sources, which is very unsafe
[0005] The problems of infrared beam (laser) line smoke detectors are: ①Because of the electrical signal, it is not suitable for installation in places with high electromagnetic radiation intensity, which is inflammable and explosive, and there are certain safety hazards; ②Electronic components are easy to age, After aging, it is easy to produce false alarms or even malfunction ③Easily interfered by infrared light and ultraviolet light, the detection beam is easily blocked to produce high false alarms ④The detector structure is complex and the maintenance cost is high
[0006] The above shortcomings of the existing technology make it no longer suitable for the needs of automatic fire alarms. A new type of smoke sensing technology is urgently needed, such as optical fiber smoke sensing. At the same time, in order to give full play to the advantages of optical fiber smoke sensing, it must be equipped with specially designed optical fiber smoke sensor

Method used

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  • Correlation type smoke sensor
  • Correlation type smoke sensor
  • Correlation type smoke sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] see figure 1 - Figure 14 , a through-beam smoke sensor, including a top case 3 and a bottom case 4 connected up and down, the top case 3 includes a top case top plate 31 and a top case side wall 32 connected up and down, and the top case side wall 32 There are a plurality of smoke inlets 34 communicating with the inner cavity 33 of the top case; the through-beam smoke sensor also includes a sensing chamber 5 with one-way opening, and the top opening 53 of the sensing chamber 5 is connected to the The bottom surfaces are connected, and the interior of the sensing chamber 5 is provided with the No. 1 optical fiber fixing table 1 and the No. 2 optical fiber fixing table 2 facing each other. There is a space between the No. 1 optical fiber fixing table 1 and the No. 2 optical fiber fixing table 2. Cavity 22; the middle part of the bottom shell 4 is provided with a smoke guide through hole 43, the bottom surface of the smoke guide through hole 43 is connected with the top ...

Embodiment 2

[0068] Basic content is the same as embodiment 1, the difference is:

[0069] The opposite beam smoke sensor also includes a smoke collection device 7 arranged in the top case 3, the smoke collection device 7 includes a smoke collection shaft 71, a smoke chamber 72 around the shaft and a plurality of smoke collection pieces 73, all the smoke collection pieces 73 are evenly arranged around the smoke collection shaft 71, and there are sheet flues 74 sandwiched between adjacent smoke collection sheets 73. The shaft 71 and the smoke guiding through hole 43 are set up and down, and the smoke inlet 34 communicates with the smoke guiding through hole 43 after passing through the top shell inner cavity 33 , the sheet flue 74 , and the shaft around the smoke cavity 72 . Preferably, the top of the smoke collection shaft 71 is flush with the top of the smoke collection sheet 73, the length of the smoke collection shaft 71 is greater than the height of the smoke collection sheet 73, the b...

Embodiment 3

[0071] Basic content is the same as embodiment 1, the difference is:

[0072] The top of the top shell side wall 32 is connected to the top shell top plate 31, the bottom of the top shell side wall 32 is connected to the top surface of the hat-shaped shell 37, and at least two tops are arranged on the inner side of the bottom surface of the hat-shaped shell 37. Block 371; the bottom shell 4 includes a bottom shell top plate 41 and a bottom shell side wall 42, the middle part of the bottom shell top plate 41 is provided with a smoke guiding through hole 43, and the periphery of the bottom shell top plate 41 is in contact with the top of the bottom shell side wall 42 connection, the side wall of the bottom shell side wall 42 is provided with a bottom slot 44 corresponding to the top block 371, and the bottom slot 44 includes an upper horizontal slot 441 that can slide and fit with the top block 371, the next Transverse groove 442, following two transverse grooves 443, the bottom...

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PUM

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Abstract

A correlation type smoke sensor comprises a top shell, a bottom shell and a sensing chamber with a bidirectional opening. The top opening of the sensing chamber is connected with the bottom face of the bottom shell. A first optical fiber fixing table and a second optical fiber fixing table which are oppositely arranged are arranged in the sensing chamber. A between-table cavity is sandwiched between the two fixing tables. The bottom face of a smoke guide through hole in the middle of the bottom shell is connected with the top end of a first insertion piece and the top end of a second insertionpiece. The bottom end of the first insertion piece and the bottom end of the second insertion piece both make contact with a chamber bottom plate of the sensing chamber. The first insertion piece islocated on one side of the first optical fiber fixing table and the second optical fiber fixing table. The second insertion piece is located on the other side of the first optical fiber fixing table and the second optical fiber fixing table. An insertion cavity sandwiched between the first insertion piece and the second insertion piece is communicated with the between-table cavity. A smoke inlet formed in a side surrounding plate of the top shell sequentially runs through an inner cavity of the top shell, the smoke guide through hole and the insertion cavity to be communicated with the between-table cavity. Due to the design, the correlation type smoke sensor can be suitable for optical fiber smoke sensing and automatic alarm, is high in smoke focusing effect, high in sensitivity and low in manufacturing and use cost and can be prevented from the interference of environmental light and insect pests.

Description

technical field [0001] The invention relates to a smoke alarm device, in particular to a through-beam smoke sensor, which is particularly suitable for optical fiber smoke sensing automatic alarm, and has strong smoke gathering effect and high sensitivity. Background technique [0002] At present, the smoke detectors used for automatic fire alarm at home and abroad are all photoelectric, ion-type smoke detectors, infrared beam (laser) linear smoke detectors, etc. [0003] The problems of photoelectric smoke detectors are: ①Because of the electric signal, it is not suitable for installation in places with flammable and explosive and high electromagnetic radiation intensity, and there are certain safety hazards ②Electronic components are easy to age, and false alarms are easy to occur after aging Even failure ③The detector structure is complex, and the maintenance cost is high in the later period ④Because it cannot resist ambient light interference, the ambient light is blocked...

Claims

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Application Information

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IPC IPC(8): G08B17/103
Inventor 张森
Owner 铜陵晶点光科有限公司