CN209842825U - Vertical multi-light-path bidirectional scattering smoke detector labyrinth - Google Patents
Vertical multi-light-path bidirectional scattering smoke detector labyrinth Download PDFInfo
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- CN209842825U CN209842825U CN201920537129.4U CN201920537129U CN209842825U CN 209842825 U CN209842825 U CN 209842825U CN 201920537129 U CN201920537129 U CN 201920537129U CN 209842825 U CN209842825 U CN 209842825U
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Abstract
The utility model provides a vertical multi-light path two-way scattering smoke detector labyrinth, which comprises a labyrinth measuring cavity, and two groups of transmitting tubes and receiving tubes which are arranged in the labyrinth measuring cavity, wherein the included angles between the optical axes of the first transmitting tube and the second transmitting tube and the optical axis of the first receiving tube are respectively equal and are obtuse angles, so that the first transmitting tube and the second transmitting tube respectively form a forward light path with the first receiving tube; the included angle between the optical axis of the first transmitting tube and the optical axis of the second receiving tube is equal and acute, so that the first transmitting tube and the second receiving tube form a backward light path respectively. The vertical multi-light-path bidirectional scattering smoke detector labyrinth has the advantages of scientific design, improvement of response capability to various kinds of smoke, reduction of misinformation and mutual calibration.
Description
Technical Field
The utility model relates to a smoke detector field, specific theory has related to a vertical many light paths two-way scattering smoke detector maze.
Background
Smoke detectors widely used in automatic fire alarm systems include ion smoke detectors and photoelectric smoke detectors. The ion smoke detector has good detection effect on various open fire smoke and can also detect smoldering fire smoke, but because the ion smoke detector is easily influenced by the environment, the false alarm rate is high, and the ion smoke detector contains a low-energy pollution source, the ion smoke detector cannot meet the requirement on green and environment-friendly products, and is basically replaced by a photoelectric smoke detector.
At present, the smoke-sensitive fire detectors sold in the market all adopt an infrared beam scattering principle, and the related smoke-sensitive detector labyrinth has higher detection sensitivity to white or gray smoke with larger particle size, but has poorer detection sensitivity to black smoke with smaller particle size. In order to improve the sensitivity of the existing smoke detector to black smoke with small particle size, the mode of reducing the alarm threshold is often adopted, but when the smoke interference with light color such as dust, cigarette smoke and the like exists, the detector can generate response output exceeding the alarm threshold due to small smoke concentration, and the phenomenon of false alarm often occurs.
The existing smoke detector is provided with a transmitting tube, and when the transmitting tube is damaged, the transmitting tube is often detached and then re-sheathed for calibration, which wastes time and labor.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The utility model aims at the not enough of prior art to a design science, improvement to the response ability of various smog, reduce the wrong report, mutual calibration's vertical many light paths two-way scattering smoke detector maze is provided.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a vertical multi-light-path two-way scattering smoke detector labyrinth comprises a labyrinth measuring cavity and two groups of transmitting tubes and receiving tubes which are arranged in the labyrinth measuring cavity, wherein included angles between an optical axis of a first transmitting tube and an optical axis of a second transmitting tube and an optical axis of a first receiving tube are equal and obtuse angles, so that the first transmitting tube and the second transmitting tube and the first receiving tube form a forward light path respectively; the included angle between the optical axis of the first transmitting tube and the optical axis of the second receiving tube is equal and acute, so that the first transmitting tube and the second receiving tube form a backward light path respectively.
Basically, the first transmitting tube and the second transmitting tube are controlled to be opened and closed by independent control switches.
Basically, the front ends of the first transmitting tube, the second transmitting tube, the first receiving tube and the second receiving tube are all provided with lenses.
Basically, the first receiving pipe and the second receiving pipe are provided with shielding cases.
Basically, the installation positions of the first transmitting tube, the second transmitting tube and the second receiving tube are located on the same circumference in the same plane, and connecting lines among the installation positions of the first transmitting tube, the second transmitting tube and the second receiving tube form an isosceles triangle.
Basically, the installation position of the first receiving pipe is located above the installation positions of the first transmitting pipe, the second transmitting pipe and the second receiving pipe.
Basically, the first emission tube emits blue visible light, and the second emission tube emits infrared light.
The utility model discloses relative prior art has substantive characteristics and progress, specific theory, the utility model discloses a three-dimensional structural design constitutes two sets of preceding light path and two sets of back light path, and two sets of receiving terminals to the light path are unified for light intensity obtains strengthening, and two received signal add up and has improved the ability to smoke response, need not to transfer down the response threshold value, just also eliminate the wrong report phenomenon that this reason leads to.
Two transmitting tubes form two groups of light paths, and in the final operation and judgment process, the average value of two groups of data can be taken to judge the dust accumulation degree in the maze, the slow change dust accumulation is compensated, and the pollution alarm is sent out after the slow change dust accumulation exceeds the average value.
Under the condition that the two transmitting tubes are symmetrically installed, the two transmitting tubes can be mutually calibrated, when a certain transmitting tube is in fault, fault information can be quickly obtained by utilizing data acquired by the other transmitting tube, and the fault transmitting tube can temporarily replace a fault transmitting tube to continue working.
Drawings
Fig. 1 is a schematic structural diagram of the labyrinth of the vertical multi-light-path bidirectional scattering smoke detector of the present invention.
FIG. 2 is a schematic structural diagram of a vertical multi-light-path bidirectional scattering smoke detector labyrinth in another embodiment.
In the figure: 1. a first emitter tube; 2. a second launch tube; 3. a first receiving pipe; 4. a second receiving tube.
Detailed Description
The technical solution of the present invention will be described in further detail through the following embodiments.
As shown in fig. 1, a vertical multi-light path two-way scattering smoke detector labyrinth comprises a labyrinth measurement cavity and two sets of transmitting tubes and receiving tubes arranged in the labyrinth measurement cavity, wherein included angles between an optical axis of a first transmitting tube 1 and an optical axis of a second transmitting tube 2 and an optical axis of a first receiving tube 3 are equal and are obtuse angles, so that the first transmitting tube 1 and the second transmitting tube 2 and the first receiving tube 3 form a forward light path respectively; the included angle between the optical axis of first transmitting tube 1 and the optical axis of second transmitting tube 2 and the optical axis of second receiving tube 4 respectively equals and is the acute angle to first transmitting tube 1 and second transmitting tube 2 constitute the back light path with second receiving tube 4 respectively. First receiver tube 3 receives two sets of forward light paths, and second receiver tube 4 receives two sets of backward light paths, has improved light intensity, and the response ability to smog has been improved to the accumulation of two received signal.
In this embodiment, the installation positions of the first transmitting tube 1, the second transmitting tube 2 and the second receiving tube 4 are located on the same circumference in the same plane, a connecting line among the installation positions of the first transmitting tube 1, the second transmitting tube 2 and the second receiving tube 4 forms an isosceles triangle, and the installation position of the first receiving tube 3 is located above the installation positions of the first transmitting tube 1, the second transmitting tube 2 and the second receiving tube 4; two transmitting tubes are symmetrically arranged and can be calibrated with each other, when a certain transmitting tube fails, the data acquired by the other transmitting tube can be used for quickly acquiring failure information, and the transmitting tube can temporarily replace the failed transmitting tube to continue working.
In other embodiments, as shown in fig. 2, the first transmitting tube 1, the second transmitting tube 2, the first receiving tube 3 and the second receiving tube 4 are all located in the same plane.
The first emission tube 1 emits blue visible light, and the second emission tube 2 emits infrared light; the blue visible light is sensitive to open fire response of smoke particles and particles with the particle size smaller than 0.4 mu m in the early stage of a fire disaster, the infrared light is sensitive to grey smoke generated by smoldering of wood and cotton ropes, the sensitivity to white smoke with large particle size and black smoke with small particle size can be considered through the combined design of the blue visible light and the infrared light, the fire hazard can be found very early in the early stage of the fire disaster, and the accuracy and the stability of fire disaster detection are improved.
The first transmitting tube 1 and the second transmitting tube 2 are controlled to be opened and closed by a single control switch; when in use, the medicine can be used separately or together according to different requirements.
In order to meet the requirements of different installation places, lenses are arranged at the front ends of the first transmitting tube 1, the second transmitting tube 2, the first receiving tube 3 and the second receiving tube 4.
In order to shield the external electromagnetic interference, shielding covers are mounted on the first receiving pipe 3 and the second receiving pipe 4.
The working principle is as follows:
the combination of blue visible light and infrared light gives consideration to the sensitivity to white smoke with larger particle size and black smoke with smaller particle size, and improves the accuracy and stability of fire detection.
When smoke enters a detector labyrinth, the blue visible light emitted by the first emitting tube 1 and the infrared light emitted by the second emitting tube 2 are scattered when encountering smoke particles, the first receiving tube 3 receives the light from the forward light path of the first emitting tube and the light from the backward light path of the second emitting tube, the received light intensity is enhanced, the induction threshold value is not required to be reduced, and the false alarm of dust and water mist is reduced.
During calibration, the two transmitting tubes are respectively and independently started, if one receiving tube cannot receive normal scattered light, the receiving tube fails, and when the two receiving tubes can receive the normal value of one transmitting tube and cannot receive the normal value of the other transmitting tube, the other transmitting tube fails, so that adjustment and maintenance are facilitated.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (7)
1. A vertical multi-light path bidirectional scattering smoke detector maze is characterized in that: the device comprises a labyrinth measurement cavity and two groups of transmitting tubes and receiving tubes which are arranged in the labyrinth measurement cavity, wherein included angles between an optical axis of a first transmitting tube and an optical axis of a second transmitting tube and an optical axis of a first receiving tube are equal and obtuse angles, so that the first transmitting tube and the second transmitting tube and the first receiving tube form a forward light path respectively; the included angle between the optical axis of the first transmitting tube and the optical axis of the second receiving tube is equal and acute, so that the first transmitting tube and the second receiving tube form a backward light path respectively.
2. The vertical multi-light path bi-directional scattering smoke detector labyrinth of claim 1, characterized in that: the first emission tube and the second emission tube are controlled to be opened and closed by an independent control switch.
3. The vertical multi-light-path bi-directional scattering smoke detector labyrinth according to claim 1 or 2, characterized in that: lenses are arranged at the front ends of the first transmitting tube, the second transmitting tube, the first receiving tube and the second receiving tube.
4. The vertical multi-light path bi-directional scattering smoke detector labyrinth of claim 3, characterized in that: and the first receiving pipe and the second receiving pipe are provided with shielding cases.
5. The vertical multi-light-path bi-directional scattering smoke detector labyrinth as claimed in any one of claims 1, 2 or 4, wherein: the installation positions of the first transmitting tube, the second transmitting tube and the second receiving tube are located on the same circumference in the same plane, and connecting lines among the installation positions of the first transmitting tube, the second transmitting tube and the second receiving tube form an isosceles triangle.
6. The vertical multi-light-path bi-directional scattering smoke detector labyrinth as claimed in claim 5, wherein: the installation position of the first receiving pipe is positioned above the installation positions of the first transmitting pipe, the second transmitting pipe and the second receiving pipe.
7. The vertical multi-light path bi-directional scattering smoke detector labyrinth as claimed in any one of claims 1, 2, 4 or 6, wherein: the first emission tube emits blue visible light and the second emission tube emits infrared light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920537129.4U CN209842825U (en) | 2019-04-19 | 2019-04-19 | Vertical multi-light-path bidirectional scattering smoke detector labyrinth |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920537129.4U CN209842825U (en) | 2019-04-19 | 2019-04-19 | Vertical multi-light-path bidirectional scattering smoke detector labyrinth |
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| CN209842825U true CN209842825U (en) | 2019-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110009864A (en) * | 2019-04-19 | 2019-07-12 | 汉威科技集团股份有限公司 | A kind of vertical multi-pass two-way dispersion smoke sensing detector labyrinth |
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2019
- 2019-04-19 CN CN201920537129.4U patent/CN209842825U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110009864A (en) * | 2019-04-19 | 2019-07-12 | 汉威科技集团股份有限公司 | A kind of vertical multi-pass two-way dispersion smoke sensing detector labyrinth |
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