CN210574193U

CN210574193U - Smoke detector labyrinth and smoke detector

Info

Publication number: CN210574193U
Application number: CN201921532179.XU
Authority: CN
Inventors: 欧阳培光
Original assignee: Hangzhou Haishenghai Intelligence Network Technology Co ltd
Current assignee: Hangzhou Haishenghai Intelligence Network Technology Co ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-05-19
Anticipated expiration: 2029-09-16

Abstract

The utility model discloses a smoke detector labyrinth and a smoke detector, which comprises a labyrinth base, a light emitter, a backward receiver, a forward receiver and a labyrinth cover; the circle center of a circle formed by the central points of the front ends of the light emitter, the backward receiver and the forward receiver is superposed with the circle center of the labyrinth base; the included angle formed by the central axis of the light emitter and the central axis of the backward receiver is 32 degrees; the included angle formed by the central axis of the light emitter and the central axis of the forward receiver is 130 degrees, and the intersection point formed by the included angle is superposed with the circle center position of the labyrinth base; the labyrinth lid includes inner wall and outer wall, and the height that highly is greater than the outer wall of inner wall forms the clearance between the top that the other end of inner wall stretches out the bottom of labyrinth lid to the labyrinth base and the labyrinth base, solves current smoke and feels detector when detecting insensitive, the directionality is poor and smoke and feels the detector bulky problem.

Description

Smoke detector labyrinth and smoke detector

[ technical field ] A method for producing a semiconductor device

The utility model relates to a smog alarm technology field especially relates to a detector maze and smoke detector are felt to cigarette.

[ background of the invention ]

Photoelectric smoke detector is the detection smog equipment that the fire control field generally used, and photoelectric smoke detector utilizes the reflection of granule in the gas to the detecting light to survey the condition of a fire, and photoelectric smoke detector can divide into forward scattering type, backscattering type and front and back according to the optical reflection principle to the bidirectional scattering type that combines together, and the axis of the light that the light emitter sent and the contained angle a between the light axis that light receiver received: 90 DEG < a < 180 DEG, referred to as forward scatter; angle a between the axis of the light emitted by the light emitter and the axis of the light received by the light receiver: 0 DEG < a < 90 DEG, which is called backscattering type.

The existing photoelectric smoke detector has good response to gray smoke but is insensitive to black smoke, the alarm threshold value of the detector cannot be adjusted by self according to the smoke type of a smoke detection area after being set externally, in order to respond to the black smoke, generally speaking, the detector can respond to the black smoke in time by improving the sensitivity of the detector, namely reducing the alarm threshold value, but when the smoke interference with light colors such as dust, cigarette smoke and the like exists, the response output of the detector exceeding the alarm threshold value can be caused by small smoke concentration, so false alarm is often generated.

[ Utility model ] content

An object of the utility model is to provide a detector maze is felt to cigarette to solve current cigarette and feel the detector when detecting insensitive, the poor and big problem of detector is felt to cigarette to smog response.

Another object of the utility model is to provide a smoke detector.

To achieve the purpose, the utility model adopts the following technical proposal:

in a first aspect, the utility model provides a smoke detector labyrinth, which comprises a labyrinth base, a light emitter, a backward receiver, a forward receiver and a labyrinth cover; the light emitter, the backward receiver and the forward receiver are mounted on the labyrinth base; the labyrinth cover is arranged on the labyrinth base;

the center of a circle formed by the center points of the front ends of the light emitter, the backward receiver and the forward receiver is superposed with the center of the labyrinth base;

the included angle formed by the central axis of the light emitter and the central axis of the backward receiver is 32 degrees;

an included angle formed by the central axis of the light emitter and the central axis of the forward receiver is 130 degrees, and the formed intersection point is superposed with the position of the circle center of the labyrinth base;

the labyrinth cover comprises an inner wall and an outer wall, wherein the height of the inner wall is greater than that of the outer wall, and the other end of the inner wall extends out of the bottom of the labyrinth cover to a gap is formed between the upper part of the labyrinth base and the labyrinth base.

Preferably, the labyrinth cover further comprises a cover top positioned at the top end of the labyrinth cover, the inner surface of the cover top in the range of the inner wall is uniformly provided with first sawtooth gratings, and the inner surface of the inner wall is uniformly provided with second sawtooth gratings.

Preferably, the inner wall is spaced from the outer wall by a distance, the inner wall overlying the optical transmitter, the rearward receiver, and the forward receiver.

Preferably, the inner surface of the lower end of the outer wall is provided with threads for matching with external threads on the base wall on the labyrinth base.

Preferably, the height of the base wall is greater than the difference in height between the inner wall and the outer wall.

Preferably, the outer wall is uniformly provided with meshes for preventing mosquitoes from entering.

Preferably, the outer wall is provided with a reinforcing rib, and the reinforcing rib is used for reinforcing the strength of the outer wall.

Preferably, the inspection device further comprises a shielding plate located between the light emitter and the forward receiver, the shielding plate being close to the light emitter side, the shielding plate being configured to prevent the inspection light from the light emitter from directly entering the backward receiver.

In a second aspect, the present invention further provides a smoke detector labyrinth, including any one of the first aspect of the present invention.

The utility model has the advantages that:

1. the circle center of a circle formed by the central points of the front ends of the light emitter, the backward receiver and the forward receiver is overlapped with the circle center of the labyrinth base, so that the volume of the smoke detector can be effectively reduced, and the structure of the smoke detector is more compact.

2. By setting the included angle formed by the central axis of the light emitter and the central axis of the backward receiver to be 32 degrees, the included angle formed by the central axis of the light emitter and the central axis of the forward receiver to be 130 degrees, and the formed intersection point is superposed with the circle center position of the labyrinth base, the response of the smoke detector to various kinds of smoke is improved, and the smoke detector has good directivity.

3. A gap is formed between the bottom of the labyrinth cover, extending out of the other end of the inner wall, and the upper part of the labyrinth base, and the labyrinth base.

4. The outer wall of the maze is provided with meshes, so that mosquitoes and partial dust are prevented from entering the maze, the effects of reducing the wind speed and blocking wind are achieved, and the smog is prevented from being blown out easily under the condition of high wind speed.

5. Through setting up the difference in height that the height of base wall is greater than inner wall and outer wall, avoid outside light to get into in the inner wall of smoke detector maze.

[ description of the drawings ]

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic structural view of a labyrinth base in a first embodiment of the present invention;

fig. 2 is a schematic diagram of a positional relationship among a light emitter, a backward emitter and a forward emitter according to a first embodiment of the present invention;

FIG. 3 is a schematic structural view of a labyrinth cover according to a first embodiment of the present invention;

FIG. 4 is a schematic structural view of a labyrinth cover according to a first embodiment of the present invention;

FIG. 5 is a schematic view of an internal structure of a labyrinth cover according to a first embodiment of the present invention;

fig. 6 is a schematic view of the installation of the smoke detector labyrinth in the first embodiment of the present invention.

Description of the reference numerals

1. A labyrinth base; 2. a light emitter; 3. a backward receiver; 4. a forward receiver; 5. a visor; 6. a labyrinth cover; 7. an outer wall; 8. covering the top; 9. mesh openings; 10. reinforcing ribs; 11. an inner wall; 12. a first grating; 13. a second grating; 14. a base wall.

[ detailed description ] embodiments

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

The terms "first", "second", and the like in the present invention are used for convenience of description only to distinguish different constituent elements having the same name, and do not indicate a sequential or primary-secondary relationship.

Example one

Fig. 1 is the utility model provides a labyrinth base structure sketch map in the first, this embodiment can be applicable to the technical field that the detector was felt to the cigarette, and this detector maze is felt to the cigarette specifically includes following structure: comprising a labyrinth base 1, a light emitter 2, a backward receiver 3 and a forward receiver 4.

Wherein, install light emitter 2, backward receiver 3 and preceding receiver 4 on the maze base 1, light emitter 2 is used for launching inspection light, and the particle that suspends in the air in the smoke detector maze meets inspection light and then will reflect it, and backward receiver 3 and preceding receiver 4 are used for receiving the inspection light that the particle reflects.

Fig. 2 is a schematic diagram of a position relationship among the light emitter, the backward emitter and the forward emitter according to a first embodiment of the present invention. The circle center of a circle formed by the central points of the front ends of the light emitter 2, the backward receiver 3 and the forward receiver 4 coincides with the circle center of the labyrinth base 1, and the volume of the smoke detector can be effectively reduced through compact layout under the condition that the response of the smoke detector to smoke is not influenced.

Further, the included angle formed by the central axis of the light emitter 2 and the central axis of the backward receiver 3 is 32 °, the included angle formed by the central axis of the light emitter 2 and the central axis of the forward receiver 4 is 130 °, and the smoke detector is distinguished by the combination of the scattering angles: 32 degrees and 130 degrees, when the smoke detector works, the output values of the backward receiver 3 and the forward receiver 4 are simultaneously collected, and the color of the smoke is judged according to the output values.

Furthermore, the intersection point formed by the central axis of the light emitter 2 and the central axis of the forward receiver 4 coincides with the circle center position of the labyrinth base 1, so that the smoke detector has good directivity.

Fig. 3 is the labyrinth cover structure diagram in the first embodiment of the present invention, fig. 4 is the labyrinth cover structure diagram in the first embodiment of the present invention, refer to fig. 3 and fig. 4, wherein the labyrinth cover 6 includes an inner wall 11 and an outer wall 7, the height of the inner wall 11 is greater than the height of the outer wall 7, and the other end of the inner wall 11 extends out of the bottom of the labyrinth cover 6 to form a gap between the top of the labyrinth base 1 and the labyrinth base 1.

Fig. 5 is a schematic diagram of an internal structure of a labyrinth cover in a first embodiment of the present invention, wherein a cover top 8 is located at a top end of the labyrinth cover 6, an inner surface of the cover top 8 within a range of an inner wall 11 is uniformly provided with a first grating 12 in a zigzag shape, and an inner surface of the inner wall 11 is uniformly provided with a second grating 13 in a zigzag shape.

Specifically, in the absence of the first grating 12 and the first grating 13, the inspection light emitted from the light emitter 2 may be incident on the front receiver 4 and the rear receiver 3 after being reflected by the inner wall 11 and the roof 8, and the light becomes noise, which degrades the inspection accuracy of the smoke detector.

Further, in the smoke detector of the embodiment, the first grating 12 and the second grating 13 deflect the inspection light reflected by the inner wall 11 so as not to be incident on the front receiver 4 and the rear receiver 3, and even if the inspection light is incident on the front receiver 4 and the rear receiver 3 after being reflected for a plurality of times, the inspection light at this time is extremely weak, and thus has no influence.

Further, when the inspection light is incident on the smoke particles, the smoke particles reflect the inspection light and inject the inspection light into the front receiver 4 and the rear receiver 3, and at this time, the inspection light reflected by the first grating 12 and the second grating 13 increases the amount of the inspection light which is injected into the front receiver 4 and the rear receiver 3, and plays a role of amplification, thereby enabling the smoke detection with higher accuracy.

Fig. 6 is the installation schematic diagram of smoke detector labyrinth in the first embodiment of the present invention, refer to fig. 1, fig. 5 and fig. 6, in this embodiment, as preferred, the interval between inner wall 11 and outer wall 7 is 2mm, the gap between inner wall 11 and labyrinth base 1 is 4mm, form into the cigarette passageway, because dust, water molecule belong to unordered motion, and smog is the upward movement of taking energy, when smoke detector is installed on the ceiling, as shown in fig. 6, at this moment, only very few dust can pass through the gap at the top, and smog then begin to get into in inner wall 11 through the gap after encountering top 8.

The embodiment of the utility model provides a smog advances the cigarette mode and is different from current product, has both reduced the effect that complicated cigarette access structure can also play prevention dust, hydrone, has still improved the precision that detects when having simplified the smoke detector structure.

With continued reference to fig. 1, 5 and 6, the inner wall 11 covers the light emitter 2, the backward receiver 3 and the forward receiver 4, and the height of the base wall 14 on the labyrinth base 1 is greater than the height difference between the inner wall 11 and the outer wall 7, so that the inner wall 11 becomes a dark room to prevent the interference of the external ambient light.

Combine fig. 1 and fig. 6, the lower extreme inner face system of outer wall 7 has the screw thread for compare with the joint form of current cigarette sense detector, reduced joint post and joint hole with the external screw thread fit on the base wall 14 on the labyrinth base 1, the joint post is for advancing the barrier on the cigarette passageway, and use threaded connection to enable the connection of labyrinth base and labyrinth lid more firm.

With continued reference to fig. 4, the outer wall 7 is uniformly formed with meshes 9, and the meshes 9 are used for preventing mosquitoes from entering.

Furthermore, the outer wall 7 is provided with a reinforcing rib, and the reinforcing rib is used for reinforcing the strength of the outer wall 7.

With continued reference to fig. 1, a shielding plate 5 is positioned between the light emitter 2 and the forward receiver 4, the shielding plate 5 being on the side of the light emitter 2, the shielding plate 5 being for preventing inspection light from the light emitter 2 from directly impinging on the forward receiver 4.

Example two

In this embodiment, a smoke detector includes any one of the smoke detector labyrinths provided in the first embodiment.

The technical scheme of the embodiment comprises a labyrinth base 1, a light emitter 2, a backward receiver 3, a forward receiver 4 and a labyrinth cover 6; the labyrinth base 1 is provided with a light emitter 2, a backward receiver 3 and a forward receiver 4; a labyrinth cover 6 is arranged on the labyrinth base 1; the circle center of a circle formed by the central points of the front ends of the light emitter 2, the backward receiver 3 and the forward receiver 4 is superposed with the position of the circle center of the labyrinth base 1; the included angle formed by the central axis of the light emitter 2 and the central axis of the backward receiver 3 is 32 degrees; the included angle formed by the central axis of the light emitter 2 and the central axis of the forward receiver 4 is 130 degrees, and the intersection point formed by the included angle is superposed with the circle center position of the labyrinth base 1; labyrinth lid 6 includes inner wall 11 and outer wall 7, and the height of inner wall 11 is greater than the height of outer wall 7, and the other end of inner wall 11 stretches out and forms the clearance between labyrinth base 1 and the top of labyrinth base 6, solves current smoke and feels the detector and respond insensitive, the directionality is poor and smoke and feels the detector bulky problem to smog when detecting.

The foregoing is only a preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A smoke detector labyrinth characterized by: the light source comprises a labyrinth base, a light emitter, a backward receiver, a forward receiver and a labyrinth cover; the light emitter, the backward receiver and the forward receiver are mounted on the labyrinth base; the labyrinth cover is arranged on the labyrinth base;

the center of a circle formed by the center points of the front ends of the light emitter, the backward receiver and the forward receiver is superposed with the position of the center of the labyrinth base;

2. The smoke detector labyrinth as set forth in claim 1, wherein: the labyrinth cover comprises a labyrinth cover and is characterized by further comprising a cover top positioned at the top end of the labyrinth cover, wherein the inner surface of the cover top in the range of the inner wall is uniformly provided with sawtooth-shaped first gratings, and the inner surface of the inner wall is uniformly provided with sawtooth-shaped second gratings.

3. The smoke detector labyrinth as set forth in claim 2, wherein: the inner wall is spaced from the outer wall by a distance, the inner wall overlying the optical transmitter, the rearward receiver, and the forward receiver.

4. The smoke detector labyrinth as set forth in claim 3, wherein: and the inner surface of the lower end of the outer wall is provided with threads and is used for matching with external threads on the base wall on the labyrinth base.

5. The smoke detector labyrinth as set forth in claim 4, wherein: the height of the base wall is greater than the height difference between the inner wall and the outer wall.

6. The smoke detector labyrinth as set forth in claim 5, wherein: the outer wall is uniformly provided with meshes which are used for preventing mosquitoes from entering.

7. The smoke detector labyrinth as set forth in claim 6, wherein: and reinforcing ribs are arranged on the outer wall and are used for reinforcing the strength of the outer wall.

8. The smoke detector labyrinth as set forth in claim 1, wherein: the inspection light source further comprises a shielding plate positioned between the light emitter and the forward receiver, wherein the shielding plate is close to the light emitter side and is used for preventing the inspection light from the light emitter from being directly incident to the forward receiver.

9. A smoke detector, characterized in that: comprising the smoke detector labyrinth according to any of the claims 1-8.