CN210955419U - Smoke detection device and shell thereof - Google Patents
Smoke detection device and shell thereof Download PDFInfo
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- CN210955419U CN210955419U CN201922419475.5U CN201922419475U CN210955419U CN 210955419 U CN210955419 U CN 210955419U CN 201922419475 U CN201922419475 U CN 201922419475U CN 210955419 U CN210955419 U CN 210955419U
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- cover body
- smog
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Abstract
The utility model relates to a fire-fighting equipment technical field provides a smog detecting device and casing thereof, and above-mentioned casing is used for smog detecting device, including the mount pad and the cover body, the mount pad with the cover body covers each other and closes and form the smog chamber, the mount pad be equipped with all with the light emission pipeline and the light receiving pipeline of smog chamber intercommunication, the cover body is equipped with astigmatism portion, the light-emitting port of light emission pipeline with astigmatism portion sets up relatively, and above-mentioned casing is under the condition that does not take place the conflagration, and there is not smog in the smog chamber, and light jets out and directive astigmatism portion from the light emission passageway, and light disperses into a plurality of light beams behind astigmatism portion, effectively reduces the light intensity who gets into the light receiving pipeline to avoid triggering smog detecting device false alarm, effectively improve smog detecting device's reliability.
Description
Technical Field
The utility model relates to a fire-fighting equipment technical field especially provides a smoke detection device and casing thereof.
Background
The smoke detection device is a fire fighting device for realizing fire prevention by monitoring the concentration of smoke, and is widely applied to places such as office buildings, markets, residential buildings and the like.
The existing smoke detection device is generally provided with a light emitter and a light receiver, when a fire breaks out, smoke entering the smoke detection device can scatter light emitted from the light emitter to the light receiver, and when the light receiver receives the light, an alarm is triggered. However, since the existing smoke detection device is not designed reasonably, under the condition that no fire occurs, light emitted from the light emitter easily enters the light receiver after being reflected for multiple times in the smoke detection device, so that the smoke detection device gives false alarm, and thus, the existing smoke detection device is low in reliability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a smoke detector and casing thereof aims at solving current smoke detector and takes place the alert condition of wrong report easily, the lower technical problem of reliability.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a casing for smoke detection device, includes the mount pad and the cover body, the mount pad with the cover body covers each other and closes and form the smog chamber, the mount pad be equipped with all with the light emission pipeline and the light receiving pipe way of smog chamber intercommunication, the cover body is equipped with astigmatism portion, the light-emitting outlet of light emission pipeline with astigmatism portion sets up relatively.
The utility model provides a casing has following beneficial effect at least: under the condition that no fire occurs, no smoke exists in the smoke cavity, light rays are emitted from the light emitting channel and projected onto the light scattering part, the light rays are scattered into a plurality of light beams projected to the periphery under the scattering effect of the light scattering part, the intensity of the light rays entering the light receiving pipeline is effectively reduced, the condition that the false alarm of the smoke detection device is triggered is avoided, and the reliability of the smoke detection device is effectively improved.
In one embodiment, the light scattering part includes a plurality of bumps arranged in an array structure, and the bumps are polyhedral structures.
In one embodiment, the bump has a triangular pyramid structure or a rectangular pyramid structure.
In one embodiment, the surface of the light scattering part is provided with a first light absorption coating.
In one embodiment, the inner wall of the light emission pipeline is provided with a first step structure, and the surface of the first step structure is provided with a second light absorption coating; and/or the inner wall of the light receiving pipeline is provided with a second step structure, and the surface of the second step structure is provided with a third light absorption coating.
In one embodiment, the light emitting pipe and the light receiving pipe are arranged at an included angle with each other.
In one embodiment, the housing further includes a labyrinth assembly disposed between the mounting seat and the cover body, the labyrinth assembly includes a plurality of light blocking sheets arranged at intervals along a circumference, and the plurality of light blocking sheets, the mounting seat and the cover body are commonly enclosed to form the smoke chamber.
In one embodiment, the light blocking sheet has a bent structure.
In order to achieve the above object, the present invention further provides a smoke detecting device, which includes a light emitter, a light receiver and the above housing, wherein the light emitter is disposed in the light emitting pipeline of the housing, and the light receiver is disposed in the light receiving pipeline.
The utility model provides a smoke detection device has following beneficial effect at least: under the condition that does not have the conflagration to take place, there is not smog in the smog chamber, on the astigmatism portion was projected to light transmission channel from the light emitter outgoing beam, light dispersed into a plurality of light beams that throw all around under the scattering effect of astigmatism portion, effectively reduced the light intensity who gets into the light receiving pipe to avoid the photoreceiver spurious triggering and lead to the condition emergence of smog detecting device false alarm, effectively improved smog detecting device's reliability.
In one embodiment, the smoke detector further comprises a signal shielding cover, and the signal shielding cover is arranged on the light receiving pipeline.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is an exploded view of a housing according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the shroud and labyrinth assembly of the housing of FIG. 1;
FIG. 3 is an enlarged view of the housing of FIG. 2 at A;
FIG. 4 is a cross-sectional view of a mounting socket of the housing shown in FIG. 1;
fig. 5 is an exploded view of a smoke detector according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
10. the light emitting device comprises a shell, 11, a mounting seat, 111, a light emitting pipeline, 1111, a first stepped structure, 112, a light receiving pipeline, 1121, a second stepped structure, 1122, a positioning block, 113, a positioning hole, 14, a smoke cavity, 12, a cover body, 121, an astigmatism part, 1211, a convex block, 122, a positioning column, 13, a labyrinth assembly, 131, a light blocking sheet, 20, a light emitter, 30, a light receiver, 40, a signal shielding cover, 41 and a positioning opening.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1, 2 and 4, a housing 10 for a smoke detector includes a mounting base 11 and a cover 12, the mounting base 11 and the cover 12 cover each other to form a smoke chamber 14, the mounting base 11 is provided with a light emitting pipe 111 and a light receiving pipe 112 both communicated with the smoke chamber 14, the cover 12 is provided with a light scattering portion 121, and a light outlet of the light emitting pipe 111 is opposite to the light scattering portion 121.
Under the condition that no fire occurs, no smoke exists in the smoke cavity 14 of the shell 10, light rays are emitted from the light emitting channel and projected onto the light scattering part 121, the light rays are scattered into a plurality of light beams projected towards the periphery under the scattering effect of the light scattering part 121, the intensity of the light rays entering the light receiving pipeline 112 is effectively reduced, the condition that false alarm of the smoke detection device is triggered is avoided, and the reliability of the smoke detection device is effectively improved.
Specifically, as shown in fig. 1 and fig. 2, the cover body 12 is provided with a plurality of positioning posts 122, the mounting base 11 is provided with a plurality of positioning holes 113 corresponding to the plurality of positioning posts 122 one to one, wherein at least one positioning post 122 is a foolproof positioning post 122 having a shape structure different from that of another positioning post 122, at least one positioning hole 113 is a foolproof positioning hole 113 having a shape structure different from that of another positioning hole 113, and the foolproof positioning post 122 is matched with the foolproof positioning hole 113, so as to achieve the foolproof assembly of the cover body 12 and the mounting base 11. In particular, the fool-proof positioning post 122 may have an elliptical column structure, and other positioning posts 122 may have a cylindrical structure, and accordingly, the fool-proof positioning hole 113 may have an elliptical structure, and other positioning holes 113 may have a circular structure, however, the shapes of the fool-proof positioning post 122 and the fool-proof positioning hole 113 may have various structures, the fool-proof positioning post 122 may have a triangular prism structure, a square prism structure, etc., and the fool-proof positioning hole 113 may have a triangular structure, a square structure, etc., which are not limited herein.
In an embodiment, as shown in fig. 1 to fig. 3, the light scattering portion 121 includes a plurality of bumps 1211 arranged in an array structure, and the bumps 1211 are polyhedral. The light is emitted from the light emitting pipe 111 and projected onto each bump 1211 of the light scattering portion 121, and the plurality of surfaces of the bumps 1211 reflect the light to the periphery to scatter the light into a plurality of light beams, thereby effectively reducing the intensity of the light entering the light receiving pipe 112.
Alternatively, as shown in fig. 3, the bump 1211 has a triangular pyramid structure or a rectangular pyramid structure. Of course, the bumps 1211 can also adopt other polyhedral structures, such as an octahedral structure, a dodecahedral structure, and the like, and is not limited herein.
In one embodiment, the surface of the light dispersion part 121 is provided with a first light absorption coating. Specifically, first light absorbing coating can be black coating, and after light projected scattered light portion 121, partial light was absorbed by first light absorbing coating to reduce the reflection intensity of light, light diverged into a plurality of beams of throwing all around under scattered light portion 121's scattering effect, with the further reflection intensity that reduces light, thereby effectively reduced the light intensity who gets into light receiving pipe 112, avoid triggering the condition emergence of smoke detection device false alarm, further improved smoke detection device's reliability.
In an embodiment, as shown in fig. 4, the inner wall of the light emitting tube 111 is provided with a first step structure 1111, and the surface of the first step structure 1111 is provided with a second light absorbing coating; and/or the inner wall of the light receiving pipe 112 is provided with a second step structure 1121, and the surface of the second step structure 1121 is provided with a third light absorbing coating. Specifically, the second light absorbing coating and the third light absorbing coating may be black coatings, and after the light is diffused into a plurality of beams projected to the periphery by the scattering action of the light diffusion portion 121, part of the light beam strikes the surface of the first stepped structure 1111 and the surface of the second stepped structure 1121 and is absorbed by the second light absorbing coating and the third light absorbing coating, further reducing the reflection intensity of the light, meanwhile, by providing the first stepped structure 1111 at the inner wall of the light emitting tube 111 and the second stepped structure 1121 at the inner wall of the light receiving tube 112, the areas of the second light absorbing coating and the third light absorbing coating are effectively increased, thereby more effectively absorbing the light beam to further reduce the reflection intensity of the light, thereby effectively reducing the intensity of the light entering the light receiving pipe 112, avoiding the occurrence of the condition of false alarm of the smoke detection device, and further improving the reliability of the smoke detection device.
In one embodiment, as shown in fig. 4, the light emitting pipe 111 and the light receiving pipe 112 are disposed at an angle. Through mutually becoming the contained angle setting with light emission pipeline 111 and light receiving pipe 112, prevent from emitting the light that pipeline 111 jets out and directly arrive light receiving pipe 112 in, effectively reduce the light intensity who gets into light receiving pipe 112, avoid triggering the condition emergence of the smog detecting device wrong report, further improve smog detecting device's reliability.
Specifically, referring to fig. 4, the light emitting tube 111 and the light receiving tube 112 are both disposed in an inclined manner from the mounting seat 11 to the cover 12, and an included angle formed between the light emitting tube 111 and the light receiving tube 112 is preferably 135 °, although the size of the included angle formed between the light emitting tube 111 and the light receiving tube 112 may be adjusted according to actual needs, such as 120 ° and 100 °, and is not limited herein.
In an embodiment, please refer to fig. 1 and fig. 2, the housing 10 further includes a labyrinth assembly 13 disposed between the mounting seat 11 and the cover 12, the labyrinth assembly 13 includes a plurality of light blocking sheets 131 arranged at intervals along a circumference, and the plurality of light blocking sheets 131, the mounting seat 11 and the cover 12 together enclose to form the smoke chamber 14. By arranging the plurality of light blocking sheets 131 at intervals along the circumference, the occupied space of the labyrinth assembly 13 is effectively reduced, thereby effectively reducing the volume of the housing 10.
In an embodiment, as shown in fig. 1 and fig. 2, the light blocking sheet 131 has a bent structure. By setting the light blocking sheet 131 to be a bending structure, the occupied space of the labyrinth assembly 13 can be further reduced, and the capacity of the smoke cavity 14 can be increased, so that the reflection amount of smoke to light rays is increased, the sensitivity of the smoke detection device is improved, and the reliability of the smoke detection device is further improved.
Referring to fig. 5, a smoke detector includes a light emitter 20, a light receiver 30 and the housing 10, wherein the light emitter 20 is disposed in a light emitting pipe 111 of the housing 10, and the light receiver 30 is disposed in a light receiving pipe 112.
Under the condition that no fire occurs, no smoke exists in the smoke cavity 14 of the smoke detection device, light emitted from the light emitter 20 is projected onto the light scattering part 121 through the light emission channel, and the light is scattered into a plurality of light beams projected to the periphery under the scattering effect of the light scattering part 121, so that the intensity of the light entering the light receiving pipeline 112 is effectively reduced, the situation that false alarm of the smoke detection device is caused due to false triggering of the light receiver 30 is avoided, and the reliability of the smoke detection device is effectively improved.
In one embodiment, with continued reference to fig. 5, the smoke detector further includes a signal shielding cover 40, and the signal shielding cover 40 is disposed on the light receiving pipe 112. By covering the signal shielding cover 40 on the light receiving pipeline 112, the signal shielding cover 40 covers the light receiver 30, so that interference of external signals on the light receiver 30 is effectively avoided, and the reliability of the smoke detection device is further improved.
In particular, the signal shielding case 40 is a metal case, such as a copper case, a steel case, or an aluminum case, and is not particularly limited herein.
Specifically, please refer to fig. 1 and fig. 5, a positioning block 1122 is disposed on an outer wall of the light receiving pipe 112, the signal shielding cover 40 is provided with a positioning opening 41 matched with the positioning block 1122, and the positioning block 1122 is matched with the positioning opening 41, so that the signal shielding cover 40 can be accurately positioned and installed, the signal shielding cover 40 effectively covers the light receiver 30, interference of external signals to the light receiver 30 is more effectively avoided, and reliability of the smoke detector is more effectively improved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A housing for a smoke detection device, characterized by: including the mount pad and the cover body, the mount pad with the cover body covers each other and closes and form the smog chamber, the mount pad be equipped with all with the light emission pipeline and the light receiving pipe way of smog chamber intercommunication, the cover body is equipped with light scattering portion, the light-emitting port of light emission pipeline with light scattering portion sets up relatively.
2. The housing of claim 1, wherein: the astigmatism portion is including being a plurality of lugs of array structure arrangement, the lug is the polyhedral structure.
3. The housing of claim 2, wherein: the convex block is in a triangular pyramid structure or a rectangular pyramid structure.
4. The housing of claim 1, wherein: the surface of the light scattering part is provided with a first light absorption coating.
5. The housing of claim 1, wherein: the inner wall of the light emission pipeline is provided with a first stepped structure, and the surface of the first stepped structure is provided with a second light absorption coating; and/or the inner wall of the light receiving pipeline is provided with a second step structure, and the surface of the second step structure is provided with a third light absorption coating.
6. The housing of claim 1, wherein: the light emitting pipeline and the light receiving pipeline are arranged at an included angle.
7. The housing according to any one of claims 1 to 6, wherein: the casing still including locating the mount pad with labyrinth subassembly between the cover body, labyrinth subassembly includes a plurality of light baffles that arrange along circumference interval, and is a plurality of the light baffle the mount pad with the cover body encloses jointly and connects and form the smog chamber.
8. The housing of claim 7, wherein: the light blocking sheet is of a bending structure.
9. A smoke detection device, characterized by: comprising a light emitter, a light receiver and a housing according to any of claims 1-8, the light emitter being placed in a light emitting duct of the housing and the light receiver being placed in a light receiving duct.
10. A smoke detection device according to claim 9, wherein: the smoke detection device further comprises a signal shielding cover, and the signal shielding cover is arranged on the light receiving pipeline in a covering mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922419475.5U CN210955419U (en) | 2019-12-27 | 2019-12-27 | Smoke detection device and shell thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922419475.5U CN210955419U (en) | 2019-12-27 | 2019-12-27 | Smoke detection device and shell thereof |
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| CN210955419U true CN210955419U (en) | 2020-07-07 |
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| CN201922419475.5U Active CN210955419U (en) | 2019-12-27 | 2019-12-27 | Smoke detection device and shell thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017389A (en) * | 2020-09-14 | 2020-12-01 | 杭州海康消防科技有限公司 | Fire detector and fire detection method |
| WO2022016717A1 (en) * | 2020-07-20 | 2022-01-27 | 九江珀伽索斯科技有限公司 | Optical dark chamber assembly for photoelectric smoke detector |
-
2019
- 2019-12-27 CN CN201922419475.5U patent/CN210955419U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022016717A1 (en) * | 2020-07-20 | 2022-01-27 | 九江珀伽索斯科技有限公司 | Optical dark chamber assembly for photoelectric smoke detector |
| CN112017389A (en) * | 2020-09-14 | 2020-12-01 | 杭州海康消防科技有限公司 | Fire detector and fire detection method |
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