CN219609762U

CN219609762U - Photoelectric smoke sensing labyrinth structure

Info

Publication number: CN219609762U
Application number: CN202320371561.7U
Authority: CN
Inventors: 王勇; 徐钧
Original assignee: Wuxi Haoan Security Technology Co ltd
Current assignee: Wuxi Haoan Security Technology Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-08-29
Anticipated expiration: 2033-03-02

Abstract

The utility model discloses a photoelectric smoke sensing labyrinth structure, which comprises a base, wherein an insect-proof net is arranged on the periphery of the base, a labyrinth is arranged on one side surface of the base and surrounded by the insect-proof net, the labyrinth comprises a plurality of groups of first units and second units which are uniformly distributed in circumference and are arranged in a staggered manner, the front ends of the first units are overlapped and staggered with the rear ends of the second units in the same group, the rear ends of the first units are overlapped and staggered with the front ends of the second units in the adjacent group, and smoke inlet channels are formed at the overlapped and staggered positions; the middle part of the first unit is provided with a baffle, and two adjacent baffles of the first unit enclose a smoke inlet compartment. The utility model greatly reduces the influence of light, and the smoke is uniform in entering and easy to enter and difficult to exit, so that the detector has better and more stable precision.

Description

Photoelectric smoke sensing labyrinth structure

Technical Field

The utility model relates to a fire detector, in particular to a photoelectric smoke sensing labyrinth structure.

Background

In fire detectors, especially photoelectric smoke detectors, the labyrinth structure is a very important component, and plays a vital role in the sensitivity and the dust-proof false alarm capability.

The labyrinth structure circuit of the prior art is simple, the passageway between the inside and the outside of the labyrinth is right angle or obtuse angle, and smog can directly enter the inside, but light also directly enters the inside, so that the light seriously affects the precision of the detector, the distribution is uneven when the smog enters, and the outside of the existing labyrinth is directly communicated with the inside, so that the smog directly escapes outside after entering, the time of the smog reserved in the inside of the labyrinth is shorter, and the detection precision is reduced.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides the photoelectric smoke sensing labyrinth structure, so that the influence of light is greatly reduced, smoke is uniform in entering and is easy to enter and difficult to exit, and the precision of the detector is better and more stable.

In order to achieve the technical purpose, the utility model adopts the following technical scheme: the photoelectric smoke sensing labyrinth structure comprises a base, wherein an insect-proof net is arranged on the periphery of the base, a labyrinth is arranged on one side surface of the base and surrounded by the insect-proof net, the labyrinth comprises a plurality of groups of first units and second units which are uniformly distributed in the circumference and are arranged in a staggered mode, the front ends of the first units are overlapped and staggered with the rear ends of the second units in the same group, the rear ends of the first units are overlapped and staggered with the front ends of the second units in the adjacent group, and smoke inlet channels are formed in the overlapped and staggered positions; the middle part of the first unit is provided with a baffle, and two adjacent baffles of the first unit enclose a smoke inlet compartment.

Further, the first unit comprises a first middle plate, a first front plate and a first rear plate, and the first middle plate, the first front plate and the first rear plate are connected to form a Z shape; the first front plates are overlapped and staggered with the second units in the same group as the front ends, and the first rear plates are overlapped and staggered with the second units in the adjacent group as the rear ends.

Further, the junction of the first middle plate and the first rear plate is connected with the baffle, and the baffle is in the same direction and extends to the inner wall of the insect-proof net fixedly connected with the first middle plate.

Further, the second unit comprises a second middle plate, a second front plate and a second rear plate, and the second middle plate, the second front plate and the second rear plate are connected to form a Z shape; the second front plates are overlapped and staggered with the first rear plates of the adjacent groups as front ends, and the second rear plates are overlapped and staggered with the first front plates of the same group as rear ends.

Further, a first rear included angle is formed between the first middle plate and the first rear plate, and the second front plates of adjacent groups point to the first rear included angle and are adjacent to the first rear included angle.

Further, the first back plate is directed towards the outer ends of adjacent sets of the second middle plates.

Further, a second rear included angle is formed between the second middle plate and the second rear plate, and the first front plates of the same group point to the second rear included angle and are adjacent to the included angle of the second rear included angle.

Further, the second back plate is directed to the outer ends of the same set of the first middle plates.

Further, a guide cone is arranged at the center of the labyrinth.

In summary, the present utility model achieves the following technical effects:

according to the utility model, the labyrinth is formed by two units, and the circumferences of the units are uniformly distributed, so that smoke can enter uniformly, and meanwhile, the smoke is easy to enter and difficult to exit, so that the detection result is accurate;

the utility model sets the overlapping staggered areas of the two positions, not only can form a smoke inlet channel, but also can consume redundant light reflection outside the labyrinth, thereby greatly reducing the influence of light on the result;

the two smoke inlet channels are enclosed into a compartment, so that smoke inlet is more uniform, smoke is locked, and escape is prevented.

Drawings

FIG. 1 is a front perspective view of a base provided by an embodiment of the present utility model;

FIG. 2 is a rear perspective view of the base;

fig. 3 is a schematic front view of fig. 2.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Examples:

the photoelectric smoke sensing labyrinth structure comprises a base 1, wherein a front perspective view of the base 1 is shown in fig. 1, and an insect-proof net 13 is arranged on the periphery of the base 1.

As shown in fig. 2, a back perspective view of the base 1 is shown in fig. 3, a front view is shown in fig. 3, a maze is formed around one side of the base 1 by an insect-proof net 13, the maze comprises a plurality of groups of first units 11 and second units 12 which are uniformly distributed around the circumference and are arranged in a staggered manner, the first units 11 and the second units 12 are taken as a group, the groups of first units 11 are uniformly distributed around the circumference of the base 1, the front ends of the first units 11 are overlapped and staggered with the rear ends of the second units 12 in the same group, the rear ends of the first units 11 are overlapped and staggered with the front ends of the second units 12 in the adjacent group, and smoke inlet channels are formed at two overlapped and staggered positions, as shown by two arrows in fig. 2; the middle part of the first unit 11 is provided with a baffle 112, and the baffles 112 of two adjacent first units 11 enclose a smoke inlet compartment, namely two smoke inlet channels enclose a compartment, so that smoke is easy to enter and difficult to exit.

The first unit 11 includes a first middle plate 111, a first front plate 113, and a first rear plate 115, and the first middle plate 111, the first front plate 113, and the first rear plate 115 are connected to form a zigzag shape; the second unit 12 includes a second middle plate 121, a second front plate 122, and a second rear plate 123, and the second middle plate 121, the second front plate 122, and the second rear plate 123 are connected to form a zigzag shape. The Z-shaped structure is obliquely arranged, so that a staggered overlapping area is formed, the overlapping area is a smoke inlet channel, and the Z-shaped structure simultaneously improves the functions of easiness in smoke inlet and difficulty in smoke outlet and locks smoke in a labyrinth.

Meanwhile, the outer wall of the second back plate 123, the outer wall of the first back plate 115, the front wall of the second middle plate 121, the front wall of the first middle plate 111 and the front wall of the baffle 112 can reflect the interference light entering from the outside of the maze back, so that the interference light entering from the outside is greatly reduced, multiple light reflections can be formed in the overlapped area, the light entering into the maze after the multiple reflections of the interference light is reduced, and the influence of the interference light on photoelectric detection is greatly reduced.

The inner walls of the second front plate 122 and the first front plate 113 realize diffuse reflection of infrared light emitted by a detector infrared emission tube (not shown), so that when the smoke is small, the inner walls of the circumference formed by the second front plate 122 and the first front plate 113 consume energy after circularly reflecting the infrared light, the infrared light received by the infrared receiving tube is reduced, and error reporting is prevented when the smoke is small.

The first front plates 113 are overlapped and staggered with the second rear plates 123 of the same group as the front ends, and the first rear plates 115 are overlapped and staggered with the second front plates 122 of the adjacent group as the rear ends. That is, the second front plate 122 is overlapped and staggered with the adjacent group of the first rear plates 115 as the front end, and the second rear plate 123 is overlapped and staggered with the same group of the first front plates 113 as the rear end.

A first rear included angle 116 is formed between the first middle plate 111 and the first rear plate 115, and the second front plates 122 of adjacent groups are directed to the first rear included angle 116 and are adjacent to the included angle of the first rear included angle 116. When approaching, form the overlapping area with first back plate 115 to under the effect of directional, the outer end of the directional adjacent group second medium plate 121 of cooperation first back plate 115 makes into the cigarette passageway by big diminish, prevents inside flue gas outward escape on the one hand, lets the inside of flue gas evenly get into the maze on the other hand, makes the effect of surveying better, simultaneously, gathers the reflection with light, reduces the influence of outside interference light to the detection.

A second rear included angle 124 is formed between the second middle plate 121 and the second rear plate 123, and the first front plates 113 of the same group point to the second rear included angle 124 and are adjacent to the included angle of the second rear included angle 124. Form the overlap area with second back plate 123 when closing to under the effect of directional, the directional outer end with group first medium plate 111 of cooperation second back plate 123, make into the cigarette passageway by big grow little, prevent inside flue gas outward escape on the one hand, on the other hand let the inside of flue gas uniform entry maze, make the effect of surveying better, simultaneously, gather light reflection, reduce the influence of outside interference light to detecting.

The junction of first medium plate 111 and first back plate 115 is connected with baffle 112, and baffle 112 syntropy extension is in the inner wall of first medium plate 111 back fixed connection fly net 13, is used for fixed connection on the one hand, and on the other hand cooperates adjacent group's baffle 112 to enclose two into a compartment with advancing the cigarette passageway for the flue gas easily advances difficultly to go out.

The guide cone 14 is arranged in the center of the maze, the guide cone 14 is in a conical form, smoke entering from the periphery is intensively conveyed to an infrared emission tube (not shown) arranged below the base 1, and the conveying effect of the smoke is improved.

Working principle:

as shown in fig. 1, the base 1 is installed on a photoelectric smoke-sensing fire detector body, smoke enters from the periphery of the insect-proof net 13, the smoke enters each compartment, enters the inner side of the labyrinth from two smoke-entering channels, the influence of light is reduced by utilizing the reflection effect of an overlapping area, and the smoke type is detected by entering the infrared transmitting tube of the photoelectric smoke-sensing fire detector under the dispersion effect of the guide cone 14.

The labyrinth structure circuit is simple in design, smoke zero generated by fire enters the interior through the flue, two infrared emitting tubes are arranged on the supporting lamp bracket, one wave band of the emitted infrared wave band is 940um, the other wave band is 540um, diffuse reflection is generated in the interior of the labyrinth, infrared light with the wave band of 400 um-1100 um is received through the infrared receiving tube, and when the value received by the infrared receiving tube is larger than a calibrated value, the fire disaster on site is determined. In contrast, the number of gray layers generated in life cannot form linear growth, so that false alarms can be effectively avoided.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical principles of the present utility model are within the scope of the technical solutions of the present utility model.

Claims

1. A photoelectric smoke sensing labyrinth structure which is characterized in that: the novel cigarette making machine comprises a base (1), wherein an insect preventing net (13) is arranged on the periphery of the base (1), a labyrinth is arranged on one side surface of the base (1) and surrounded by the insect preventing net (13), the labyrinth comprises a plurality of groups of first units (11) and second units (12) which are uniformly distributed in circumference and are arranged in a staggered mode, the front ends of the first units (11) are overlapped and staggered with the rear ends of the second units (12) in the same group, the rear ends of the first units (11) are overlapped and staggered with the front ends of the second units (12) in the adjacent group, and smoke inlet channels are formed in the overlapped and staggered positions; the middle part of the first unit (11) is provided with a baffle (112), and two adjacent baffles (112) of the first unit (11) enclose a smoke inlet compartment.

2. A photoelectric smoke-sensing labyrinth structure according to claim 1, wherein: the first unit comprises a first middle plate (111), a first front plate (113) and a first rear plate (115), wherein the first middle plate (111), the first front plate (113) and the first rear plate (115) are connected to form a Z shape; the first front plates (113) are overlapped and staggered with the second units (12) in the same group as the front ends, and the first rear plates (115) are overlapped and staggered with the second units (12) in the adjacent group as the rear ends.

3. A photoelectric smoke-sensing labyrinth structure according to claim 2, wherein: the junction of first medium plate (111) with first back plate (115) is connected with baffle (112), just baffle (112) the same direction extension is in behind first medium plate (111) fixed connection fly net (13) inner wall.

4. A photoelectric smoke-sensing labyrinth structure according to claim 2, wherein: the second unit (12) comprises a second middle plate (121), a second front plate (122) and a second rear plate (123), and the second middle plate (121), the second front plate (122) and the second rear plate (123) are connected to form a Z shape; the second front plates (122) are overlapped and staggered with the first rear plates (115) of the adjacent groups as front ends, and the second rear plates (123) are overlapped and staggered with the first front plates (113) of the same group as rear ends.

5. The photoelectric smoke-sensing labyrinth structure according to claim 4, wherein: a first rear included angle (116) is formed between the first middle plate (111) and the first rear plate (115), and the second front plates (122) of adjacent groups point to the first rear included angle (116) and are adjacent to the included angle of the first rear included angle (116).

6. The photoelectric smoke-sensing labyrinth structure according to claim 4, wherein: the first back plate (115) is directed towards the outer ends of adjacent sets of the second middle plates (121).

7. The photoelectric smoke-sensing labyrinth structure according to claim 4, wherein: a second rear included angle (124) is formed between the second middle plate (121) and the second rear plate (123), and the first front plates (113) in the same group point to the second rear included angle (124) and are adjacent to the included angle of the second rear included angle (124).

8. The photoelectric smoke-sensing labyrinth structure according to claim 4, wherein: the second back plate (123) is directed towards the outer ends of the same set of first middle plates (111).

9. A photoelectric smoke-sensing labyrinth structure according to claim 1, wherein: the center of the maze is provided with a guide cone (14).