CN2096067U - Photoelectric smoke sensitive probe photo sensitive room - Google Patents

Abstract

The utility model relates to a photoelectric smoke sensitive probe photo sensitive room, which belongs to the group of alarm device. The utility model utilizes reflection spectrum, adopts the horizontal structure of the transmitting tube, receiver tube and lens all in the darkroom. The receiver tube receives the scattered light when the emission generated by the transmitting tube and smoke through the labyrinth. The photoelectric smoke sensitive probe photo sensitive room of the simple structure simplifies the manufacturing technique, enhances the qualified rate and production efficiency of the product, which make the product satisfy the domestic standard and international standard, and enlarge the range of use.

Description

Photoelectric smoke sensitive probe photo sensitive room

The utility model relates to the photosensitive chamber of optical detector of fire smoke, belongs to the warning device class.

The photosensitive chamber straight line spectrum of existing optical detector of fire smoke, vertical structure is seen Fig. 2, it is made up of transmitting illuminant 7, shadow shield 8, receiving unit 9, and the first half of shadow shield is a transmitting illuminant, the emission scattered light, the Lower Half of shadow shield is a receiving unit, for straight line receives.Misoperation appears in the optical detector of fire smoke of the photosensitive chamber of this vertical structure easily, and structure is not compact, and also complicated, complex production process is brought difficulty to production, and production efficiency is low, the cost height.

The purpose of this utility model is exactly for fear of above-mentioned technical deficiency part, and provides a kind of production technology simple, the photosensitive chamber of the expensive low transversary of production efficiency.

Simple structural principle is as follows:

Photosensitive chamber utilizes reflectance spectrum, adopts coexist transversary in the darkroom of transmitting illuminant 7, receiving unit 9, sees Fig. 3, and when smog passed through, tube-launched spectrum reflected by the labyrinth, is received the reasonable energy spectrum of scattered light by receiving tube.This transversary is near again from the wiring board of detector, so photosensitive chamber is not only simple in structure, and production technology is also simplified greatly.

The utility model is to implement with following method:

The photosensitive chamber of optical detector of fire smoke, it by cover 1 on power valve 6, receiving tube 4, lens 5, the labyrinth, labyrinth collet 2, darkroom 3 form, power valve 6, receiving tube 4, lens 5 are stuck in simultaneously and constitute a whole darkroom 3 in the hole in darkroom, the left and right sides, the length in darkroom is 55～65mm, and angle is 55 °～75 ° between the center line of power valve and receiving tube and the darkroom length center line.Connect by key, groove between the darkroom, the left and right sides, constitute a complete darkroom, oblong aperture snap-fit in darkroom 3 and the labyrinth collet 2, the fit dimension of cover 1 support is φ 65～φ 76mm on labyrinth collet 2 and the labyrinth, the cover stent height is 15～30mm on the labyrinth, and three rectangular grooves of three supports of cover 1 and labyrinth collet 2 join on the labyrinth.

Description of drawings:

Fig. 1. photosensitive chamber wiring layout

1. cover 2. labyrinth collets, 3. darkrooms on the labyrinth

4. receiving tube 5. lens 6. power valves

Fig. 2. the existing photosensitive chamber of optical detector of fire smoke schematic diagram

7. transmitting illuminant 8. shadow shields 9. receiving units

Fig. 3. the photosensitive chamber of the utility model schematic diagram

7. transmitting illuminant 9. receiving units 10. labyrinths

Fig. 4. left darkroom part drawing

Fig. 5. right darkroom part drawing

Fig. 6. the part drawing that covers on the labyrinth

11. support

Fig. 7. the part drawing of labyrinth collet

12. rectangular groove

Embodiment:

See Fig. 1, Fig. 4, Fig. 5, Fig. 6, Fig. 7.

Example can be taken at the intermediate value of claimed range inside dimension.

The utility model is owing to adopted power valve and the transversary of receiving tube in same darkroom, the structure of photosensitive chamber is simplified greatly, simplified production technology simultaneously, rational structure is affected by environment little, improved the qualification rate of product greatly, made this production efficient height, cost is low, the index of product, performance all satisfy domestic standard and international standard, have enlarged usable range.

Claims (3)

1, a kind of photosensitive chamber of optical detector of fire smoke, it by cover 1 on power valve 6, receiving tube 4, lens 5, the labyrinth, labyrinth collet 2, darkroom 3 form, power valve 6, receiving tube 4, the lens 5 that it is characterized in that photosensitive chamber are stuck in simultaneously in the hole in darkroom, the left and right sides and constitute a whole darkroom 3, connect by key, groove between the darkroom, the left and right sides, constitute a complete darkroom, oblong aperture snap-fit in darkroom 3 and the labyrinth collet 2, three rectangular grooves of three supports of cover 1 and labyrinth collet 2 join on the labyrinth.

2, according to the described photosensitive chamber of claim 1, it is characterized in that the fit dimension of cover 1 support on labyrinth collet 2 and the labyrinth is φ 65～φ 76mm, the cover stent height is 15～30mm on the labyrinth.

3, according to claim 1, described photosensitive chambers 2, the length that it is characterized in that the darkroom is 55～65mm, and angle is 55 °～75 ° between the center line of power valve and receiving tube and the darkroom length center line.

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