CN209821996U - Labyrinth type smoke alarm device - Google Patents
Labyrinth type smoke alarm device Download PDFInfo
- Publication number
- CN209821996U CN209821996U CN201921012842.3U CN201921012842U CN209821996U CN 209821996 U CN209821996 U CN 209821996U CN 201921012842 U CN201921012842 U CN 201921012842U CN 209821996 U CN209821996 U CN 209821996U
- Authority
- CN
- China
- Prior art keywords
- labyrinth
- circuit board
- cover
- light
- alarm device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model relates to a labyrinth type smoke alarm device, which comprises a labyrinth cover, a circuit board and a photoelectric sensor, wherein the photoelectric sensor is arranged on the circuit board, and the labyrinth cover is clamped on the circuit board and is positioned right above the photoelectric sensor; the labyrinth cover comprises a top cover, a circle of smoke guide sheet is arranged on the edge of the inner side surface of the top cover, and a cone is arranged in the middle of the inner side surface of the top cover. The utility model discloses have and to adopt photoelectric emission and receive sensor as an organic whole, can give out light under vertically, simple process, the integrated level is high, and the uniformity is good, adopts the light combination of two wavelengths of infrared and blue light simultaneously, the interference of reduction dust steam that can be very big. The utility model discloses inside toper of labyrinth cover can reduce light reflection back to on the light receiving sensor by furthest when normally not having smog with lead the cigarette piece, on the light energy was reflected or scattered the sensitive face of sensor light receiving by the smog granule when having smog simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the smog is reported to the police, especially, relate to a labyrinth smog alarm device.
Background
Conventionally, in most smoke detectors using a labyrinth structure, a light emitting tube and a light receiving tube are provided in a back cover, or a device for emitting light from a side surface is provided, and light is also received from the side surface. The labyrinth structure of the rear cover is deficient in such a way, and the complete labyrinth structure cannot be independently formed. And other structural components are combined to form a complete labyrinth, so that the inner process of the labyrinth is complicated, and the debugging and the stability of mass production are greatly influenced. The traditional structure with separate transmitting and receiving leads to larger error and poor detection consistency during assembly. Meanwhile, the traditional smoke detection mode generally adopts light with single wavelength, so that the problem of insufficient judgment accuracy and performance exists, and false alarm are easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a labyrinth smoke alarm device, solve ordinary smoke detector when the response, the accuracy is not enough, the processing is numerous and diverse, the problem of missing reporting and wrong report.
The utility model discloses a realize through following technical scheme:
the utility model provides a labyrinth smog alarm device, includes labyrinth lid, circuit board and photoelectric sensor, its characterized in that: the photoelectric sensor is arranged on the circuit board, and the labyrinth cover is clamped on the circuit board and is positioned right above the photoelectric sensor; the labyrinth cover comprises a top cover, wherein a circle of smoke guide sheet is arranged on the edge of the inner side surface of the top cover, and an inverted cone is fixed in the middle of the inner side surface of the top cover.
As a further explanation of the utility model: the edge of the inner side surface of the top cover of the labyrinth cover is also fixedly connected with clamping teeth distributed in a regular triangle, and the joint of the clamping teeth and the top cover is concave.
As a further explanation of the utility model: the tobacco guiding sheet is of an inverted L shape from inside to outside, and an included angle of 45 degrees is formed between the tobacco guiding sheet (11) and the vertical horizontal direction. The inner angle of the upper end and the lower end of the smoke guiding sheet is between 110 degrees and 150 degrees, and the outer angle is between 225 degrees and 255 degrees.
As a further explanation of the utility model: the inner side edge of the top cover is provided with a groove.
As a further explanation of the utility model: the circuit board may be provided in various shapes as needed.
As a further explanation of the utility model: the clamping teeth of the circuit board and the labyrinth cover are symmetrically provided with clamping holes.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a photoelectric emission and receipt sensor as an organic whole can give out light perpendicularly, simple process, and the integrated level is high, and the uniformity is good, adopts the light of two infrared and blue light wavelengths to combine simultaneously, the interference of reduction dust steam that can be very big. The utility model discloses inside toper of labyrinth cover can reduce light reflection back to on the light receiving sensor by furthest when normally not having smog with lead the cigarette piece, on the light energy was reflected or scattered the sensitive face of sensor light receiving by the smog granule when having smog simultaneously.
Drawings
FIG. 1 is a side cross-sectional view of the present invention;
FIG. 2 is a drawing illustrating the present invention;
FIG. 3 is a schematic diagram of a circuit board design according to an embodiment of the present invention;
FIG. 4 is a schematic view of the labyrinth cover structure of the present invention;
FIG. 5 is a schematic view of the shape of the tobacco guiding sheet of the present invention;
description of the reference numerals
1 is labyrinth cover, 11 is the smoke guide piece, 111 is the interior angle, 112 is the exterior angle, 12 is the block tooth, 13 is the top cap, 131 is the top cap medial surface, 132 is the recess, 14 is the back taper, 2 is the circuit board, 21 is the block hole, 3 is photoelectric sensor.
Detailed Description
The present invention will now be described in further detail with reference to the attached drawings, which are provided for purposes of illustration and not limitation.
As shown in the cross section of fig. 1 and the implementation diagram of fig. 2, the present invention is composed of a labyrinth cover 1, a circuit board 2, and a photoelectric sensor 3. The photoelectric sensor 3 is mounted in a hollow portion where the circuit board 2 and the labyrinth cover 1 are engaged. The photoelectric sensor 3 is arranged right above a labyrinth chamber formed by the labyrinth cover 1 and the circuit board 2. The labyrinth chamber is in a hollow state, and the interior is flat and smooth.
Use the utility model discloses during the smog alarm device of labyrinth lid, the light irradiation of light source transmission is on the labyrinth, and this structure can let light can not reflect on light receiving sensor, and light shines from hollow out construction and goes out, perhaps is absorbed by the shell. The top of the inverted cone and the smooth inner wall of the labyrinth can reduce the reflection of light to a greater extent, but refract the light to the smoke guiding sheet 11 and then refract the light to the outside through the smoke guiding sheet. The inverted cone is a special cone, and is more suitable for light refraction.
As shown in FIG. 4, the edge of the inner side 131 of the top cover of the labyrinth cover 1 is further provided with engaging teeth 12 distributed in a regular triangle, and the joint of the engaging teeth 12 and the top cover 13 is concave. The concave shape makes the whole look beautiful. The clamping teeth 12 distributed in the regular triangle are more stable when clamped on the circuit board 2.
As shown in figures 5 and 4, the labyrinth chamber of the present invention comprises a circle of smoke guiding sheets 11, wherein the upper end of the smoke guiding sheet 11 is inclined upwards. When the top cover is horizontally placed, the currently observed smoke guide sheet 11 is taken as the front view direction, and the smoke guide sheet 11 and the vertical horizontal direction form an included angle of 45 degrees. The smoke guiding sheet 11 is in an inverted L shape from inside to outside, the internal angle of the upper end and the lower end of the smoke guiding sheet 11 ranges from 110 degrees to 150 degrees, and the external angle ranges from 225 degrees to 255 degrees. The labyrinth formed by the teeth can refract the light of the light source from the upper end to the lower end of the smoke guiding sheet 11, and the light of the light source can not be reflected to the light receiving sensor 3 to the maximum extent. Meanwhile, when smoke exists, the light energy is reflected or scattered to the light receiving sensitive surface of the sensor by smoke particles.
And the labyrinth cover 1 can use a sensor integrating photoelectric emission and receiving, vertically emits light, and has simple process and higher integration level. Because the utility model discloses a sensitivity can adopt the light of two wavelength of infrared and blue light to combine, and then the interference of reduction dust steam that can be very big.
The utility model discloses the fly net can be placed to recess 132 at labyrinth cover 1 top cap medial surface 131 edge, prevents that the winged insect from entering labyrinth room, and smoke detector arouses the warning because of the messenger's light reflection of winged insect.
As shown in fig. 3, fig. 3 is one of the circuit board shape designs, the circuit board 2 of the present invention can be configured in various shapes, such as a rectangular circuit board, a hexagonal circuit board, a triangular circuit board, etc. However, the circuit board 2 is provided with engaging holes 21 for fitting the engaging teeth 12. The labyrinth cover 1 of the utility model is generally black and is easy to absorb light. Preventing light from reflecting in the absence of smoke.
The embodiments given above are preferred examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical features of the technical solution of the present invention by those skilled in the art all belong to the protection scope of the present invention.
Claims (6)
1. The utility model provides a labyrinth smog alarm device, includes labyrinth lid (1), circuit board (2) and photoelectric sensor (3), its characterized in that: the photoelectric sensor (3) is arranged on the circuit board (2), and the labyrinth cover (1) is clamped on the circuit board (2) and is positioned right above the photoelectric sensor (3); labyrinth lid (1) includes top cap (13), and top cap medial surface (131) edge sets up round and leads cigarette piece (11), and top cap medial surface (131) middle part is fixed with back taper (14).
2. The labyrinth smoke alarm device as claimed in claim 1, wherein: the edge of the inner side surface (131) of the top cover of the labyrinth cover (1) is also fixedly connected with clamping teeth (12) which are distributed in a regular triangle, and the joint of the clamping teeth (12) and the top cover (13) is concave.
3. The labyrinth smoke alarm device as claimed in claim 1, wherein: the tobacco guiding sheet (11) is in an inverted L shape from inside to outside, and an included angle of 45 degrees is formed between the tobacco guiding sheet (11) and the vertical horizontal direction; the inner angle (111) of the upper end and the lower end of the smoke guiding sheet (11) ranges from 110 degrees to 150 degrees, and the outer angle (112) ranges from 225 degrees to 255 degrees.
4. The labyrinth smoke alarm device as claimed in claim 1, wherein: the edge of the inner side surface (131) of the top cover is provided with a groove (132).
5. The labyrinth smoke alarm device as claimed in claim 1, wherein: the circuit board (2) can be made into various shapes according to the requirement.
6. The labyrinth smoke alarm device as claimed in claim 1, wherein: the circuit board (2) is provided with clamping holes (21) which are symmetrically clamped with the labyrinth cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921012842.3U CN209821996U (en) | 2019-07-02 | 2019-07-02 | Labyrinth type smoke alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921012842.3U CN209821996U (en) | 2019-07-02 | 2019-07-02 | Labyrinth type smoke alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209821996U true CN209821996U (en) | 2019-12-20 |
Family
ID=68885062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921012842.3U Active CN209821996U (en) | 2019-07-02 | 2019-07-02 | Labyrinth type smoke alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209821996U (en) |
-
2019
- 2019-07-02 CN CN201921012842.3U patent/CN209821996U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201000431Y (en) | Smog detecting chamber | |
| CN106056830B (en) | A kind of labyrinth of optical detector of fire smoke | |
| CN1987426A (en) | Vertical two-way dispersion smoke sensing detector labyrinth | |
| US20200265697A1 (en) | Smoke detector and method for detecting smoke | |
| CN110009863A (en) | A kind of vertical double light path smoke detection labyrinth and its detection method | |
| CN110632030A (en) | Point type photoelectric smoke detector with same sensitivity for black smoke and white smoke and detection method thereof | |
| CN112712666A (en) | Labyrinth of bidirectional scattering photoelectric smoke detector | |
| CN111179540A (en) | Three-wavelength photoelectric smoke detection method and sensor | |
| CN209821996U (en) | Labyrinth type smoke alarm device | |
| CN106710127A (en) | Independent type photoelectric smoke sensing fire alarm device and working method | |
| CN200996940Y (en) | Smoke detecting chamber structure | |
| CN204287035U (en) | Miniature infrared gas sensor | |
| CN100557418C (en) | A kind of implementation method of back photoelectric smoke induction investigator and device thereof | |
| CN209842821U (en) | Vertical forward smoke fire detector labyrinth combined by infrared light and blue light | |
| CN210865017U (en) | Three-wavelength photoelectric smoke detector | |
| CN201060166Y (en) | Rear direction photoelectric smoke sensing detector | |
| CN210777058U (en) | Dual-wavelength dual-light-path smoke detection labyrinth | |
| CN2852113Y (en) | Upright bidirectional scattering smoke sensing detector labyrinth | |
| CN109427170A (en) | Smoke alarm | |
| CN210863533U (en) | Point type photoelectric smoke detector with same sensitivity for black smoke and white smoke | |
| CN209842822U (en) | Vertical double-light-path smoke-sensing detection labyrinth | |
| CN111312850B (en) | Photoelectric triode anti-saturation circuit | |
| CN107516396A (en) | A kind of two-way photoelectric smoke sensor | |
| CN217386468U (en) | Photoelectric smoke detector | |
| CN211856262U (en) | Particulate matter detection device and detection system with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |