CN214896875U

CN214896875U - Light-reducing point type photoelectric smoke-sensing detector labyrinth and detector

Info

Publication number: CN214896875U
Application number: CN202120484684.2U
Authority: CN
Inventors: 勾利金
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-11-26
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses a subtract light formula point type photoelectric smoke detector maze and detector, including annular maze body of circle, emitter and receiving arrangement and circuit board electric connection are equipped with the smog chamber in this internal in maze, the smog chamber is provided with dimming channel and a plurality of reflect meter, and when smog gets into back in the smog chamber, reachs behind reflect meter's a lot of continuous reflection during the light path dimming channel of emitter transmission receiving arrangement. The utility model discloses a detector, maze and labyrinth cover including interconnect, the labyrinth cover pass through the buckle lock joint in on the maze. The utility model discloses subtract light formula point type photoelectric smoke detector maze uses reflect meter's extinction principle to strengthen the effective light path that smog detected the usefulness, weakens invalid light. The length of light rays detected in a small space is prolonged by bending and reflecting the light rays for multiple times, and the intensity of effective optical signals is improved.

Description

Light-reducing point type photoelectric smoke-sensing detector labyrinth and detector

Technical Field

The utility model relates to a fire detection field that fire-fighting equipment sent out especially indicates a photoelectric smoke detector of some types.

Background

The point type photoelectric smoke-sensing fire detector is a fire detector which has the largest output and the most extensive use in the field of automatic fire detection and alarm at present, and is developed by utilizing the basic property that the smoke generated during fire can change the light transmission characteristic. The arrangement of the infrared light-emitting element (emitting device) and the photosensitive element (receiving device) of the point-type photoelectric smoke detector in the detection chamber is usually an offset design. The distance between the two is typically 20-25 mm. In a normal smokeless monitoring state, the sensor element does not receive any light, including light emitted by the infrared light emitting element.

The working principle of the existing point type photoelectric smoke fire detector is a light scattering type, and under the normal condition, the receiving device cannot receive the light emitted by the emitting device, so that the light current is not generated. When smoke enters the detection chamber in case of fire, the light emitted by the light emitting device is diffused due to the action of smoke particles, and the diffused light is received by the receiving device, so that the impedance of the receiving device is changed to generate light current, thereby realizing the function of converting smoke signals into electric signals, and the detector receives the signals and then judges whether an alarm signal needs to be sent.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: a light-reducing point-type photoelectric smoke-sensitive detector labyrinth and detector are provided, by the operation of smoke light-reducing principle, the light emitted by the emitting device of infrared light-emitting element is reflected by smoke particles to the receiving device of photosensitive element.

In order to solve the technical problem, the utility model discloses a technical scheme lie in: the utility model provides a subtract light formula point type photoelectric smoke detector maze, includes the hollow maze body of ring shape, ruddiness emitter and receiving arrangement, emitter and receiving arrangement and circuit board electric connection, this internal smog chamber that is equipped with in maze, the smog chamber is provided with dimming passageway and a plurality of reflect meter, gets into when smog back in the smog chamber, during the light route dimming passageway of emitter transmission, reachs behind reflect meter's a lot of continuous reflection receiving arrangement.

Furthermore, the reflecting device is a reflector, and the reflector is fixed on the labyrinth body through a reflector base.

Further, a plurality of the reflector bases are arranged along the edge of the inner wall of the labyrinth body.

Furthermore, the dimming channel is an S-shaped channel which is formed by arranging a plurality of light blocking walls at intervals and has a plurality of bends.

Furthermore, the light blocking walls are convex triangular cones, and the tops of the adjacent two light blocking walls are oppositely arranged and staggered by a certain gap.

Further, the reflecting device is located between the cone bottoms of two adjacent light blocking walls.

The utility model also discloses a detector, maze and labyrinth cover including interconnect, the maze do the extinction formula point type photoelectric smoke detector maze, the labyrinth lid pass through the buckle lock joint in on the maze.

The technical effects of the utility model reside in that: the utility model discloses subtract light formula point type photoelectric smoke detector maze uses reflect meter's extinction principle to strengthen the effective light path that smog detected the usefulness, weakens invalid light. The length of light rays detected in a small space is prolonged by bending and reflecting the light rays for multiple times, and the intensity of effective optical signals is improved. The utility model discloses a work of dimming principle, the light that sends as infrared light-emitting component's emitter is then by on the receiving arrangement of smoke particle reflection light-sensitive element to when receiving sufficient light signal, the detector just sends fire alarm.

The utility model discloses the S shape of dimming passageway has prolonged the length of passageway, but can reduce the volume, and then has realized the point type structural design of photoelectric sensing cigarette fire detector, to the direct measurement of smog m value in some type structure space, the minimum is greater than 0.3, if the good of cooperation optimization between maze and the shell, the m value is the highest sensitivity that can accomplish 1.0.

Drawings

FIG. 1 is a top view of the light-reducing point-type photoelectric smoke detector labyrinth of the present invention;

fig. 2 is a schematic structural diagram of the light-reducing point-type photoelectric smoke detector labyrinth of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

As shown in fig. 1 and 2, for the utility model relates to a light reduction formula point type photoelectric smoke detector maze 1, including ring hollow maze body 19, emitter 11 and receiving arrangement 20 and circuit board (not shown in the figure) electric connection are equipped with smog chamber 18 in maze body 19, smog chamber 18 is provided with light reduction passageway 14 and a plurality of reflect meter, and when smog gets into back in the smog chamber, the light that emitter transmitted passes through light reduction passageway 14, and the light that weakens after reflect meter's the continuous reflection of a lot of correspondence reachs receiving arrangement 20.

The reflecting device is a reflecting mirror 12, and the reflecting mirror 12 is fixed on the labyrinth body 19 through a reflecting mirror base 15. The plurality of the emission mirror bases are arranged along the edge of the inner wall of the labyrinth body.

The light reduction channel 14 is a bent S-shaped channel, a plurality of convex light blocking walls 13 in a conical shape are arranged on two sides of the S-shaped channel, in this embodiment, the light blocking walls 13 are hollow and convex triangular cones, a certain gap 133 is staggered between two adjacent light blocking walls 13, the cone tops 131 are arranged oppositely, and the light reduction channel 14 just passes through the gap 133. The reflectors 12 are located at the conical bottoms 132 of two adjacent light-blocking walls 13, and the position of the reflectors 12 is selected according to the light-reflecting principle that every two reflectors are arranged at a certain angle. As shown in fig. 2, the plurality of reflectors 12 are disposed on two sides of the central axis of the labyrinth body 19 and are disposed opposite to each other, wherein each reflector 12 is disposed corresponding to two reflectors 12 facing each other for continuous reflection of light.

In this embodiment, the S shape of the dimming channel 14 extends the length of the channel, so as to realize the point-type structural design of the photoelectric smoke-sensitive fire detector, and the minimum value of the point-type structural design can be greater than 0.3 by directly measuring the m value of smoke in the point-type structural space, and if the labyrinth and the housing are well matched and optimized, the sensitivity of 1.0 can be achieved at the highest m value.

The working principle of the utility model is to detect the measuring instrument used in national standard and American and European standard, namely the smoke detection optical densimeter according to the fire smoke. The utility model discloses the maze is exactly that the detection to smog is realized to the principle of this detecting instrument. The utility model discloses a utility model principle is different from prior art, and the theory of operation of photoelectric smoke fire detector among the prior art is the scattered light type, the utility model discloses a principles of subtracting light designs, and the principle through the many times continuous reflection of reflection device goes on. And, the utility model discloses the S-shaped dimming channel that has set up the bending type has realized the design of point type detector, and light has realized the length of detecting light in the little space through the extension of dimming channel, improves effective light signal' S intensity.

The utility model also discloses a detector, maze and labyrinth cover including interconnect, the maze be like the point type photoelectric smoke detector maze of extinction formula, the labyrinth lid pass through the buckle lock joint in on the maze.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. The utility model provides a subtract hollow maze body of light formula point type photoelectric smoke detector maze, includes annular hollow maze body, emitter and receiving arrangement, ruddiness emitter and receiving arrangement and circuit board electric connection, this internal smog chamber that is equipped with in maze, its characterized in that, the smog chamber is provided with dimming passageway and a plurality of reflect meter, and when smog gets into back in the smog chamber, reachs behind reflect meter's a lot of continuous reflection during the light route dimming passageway of emitter transmission receiving arrangement.

2. The light-reduction type point-type photoelectric smoke detector labyrinth as claimed in claim 1, wherein the reflecting device is a reflecting mirror, and the reflecting mirror is fixed on the labyrinth body through a reflecting mirror base.

3. The light-attenuating point-type photodetector labyrinth according to claim 2, wherein a plurality of the reflector bases are provided along an inner wall edge of the labyrinth body.

4. The light-reducing point-type photoelectric smoke detector labyrinth according to claim 1, wherein the light-reducing channel is an S-shaped channel with a plurality of bends and formed by a plurality of light-blocking walls arranged at intervals.

5. The light-reduction type point-type photoelectric smoke detector labyrinth according to claim 4, wherein the light-blocking walls are convex triangular cones, and the tops of the cones of two adjacent light-blocking walls are opposite and staggered by a certain gap.

6. The light-reducing point-type photoelectric smoke detector labyrinth according to claim 4, wherein said reflecting means is located between the cone bottoms of two adjacent light-blocking walls.

7. A detector, comprising a labyrinth and a labyrinth cover which are connected with each other, wherein the labyrinth is the dimming point type photoelectric smoke detector labyrinth as claimed in any one of claims 1 to 6, and the labyrinth cover is buckled on the labyrinth through a buckle.