A smoke detector maze cover with inclined top smoke inlet

By using oblique smoke inlet method and ring-arranged smoke inlet holes in the smoke detector maze cover, the poor sensitivity caused by the traditional maze cover smoke inlet method is solved, and a more uniform and efficient smoke inlet effect is achieved.

CN111127817BActive Publication Date: 2025-02-18BENGBU EI FIRE ELECTRONICS CO LTD
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Patent Information

Application Number
CN202010024598.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-01-10
Publication Date
2025-02-18
Estimated Expiration
2040-01-10

AI Technical Summary

Technical Problem

The traditional labyrinth hood smoke intake method has the problem that some directions are not conducive to the smoke entering the detection area, resulting in poor sensitivity of the smoke detector.

Method used

The smoke detector maze cover that uses an obliquely-pushed smoke inlet method enhances the smoke inlet effect through the annular inclined panel, the sides of the upper cover body and the multiple arrays of annular inlet holes on the annular flat panel.

Benefits of technology

It improves the smoke sensing sensitivity of the smoke detector, effectively solves the problem that some directions are not conducive to smoke inlet, has excellent orientation performance, and the design of the smoke inlet holes avoids ambient light entering, ensuring that smoke particles directly enter the detection area.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a smoke detector labyrinth cover with an inclined top smoke inlet mode, comprising an annular inclined panel and a truncated cone-shaped upper cover body, an annular flat plate is connected between the upper end of the annular inclined panel and the lower end of the upper cover body, and multiple rows of annularly arranged smoke inlet holes are arranged on the annular inclined panel, the side of the upper cover body and the annular flat plate. The total projected area of ​​all the smoke inlet holes in the horizontal direction is between 100 and 500 mm. 2 The present invention provides an annular inclined panel, the side of the upper cover body and an annular flat panel, and uses the smoke inlet holes thereon to simultaneously inlet smoke, thereby enhancing the smoke inlet effect and improving the smoke sensitivity of the smoke detector, effectively solving the problem that some orientations of the existing labyrinth cover are not conducive to smoke inlet, and has excellent orientation performance. The structure of the smoke inlet hole can effectively prevent ambient light from entering, while facilitating smoke particles to directly enter the detection area.
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Description

Technical Field

[0001] The invention relates to the field of smoke detectors, and mainly to a smoke detector labyrinth cover with an inclined top smoke inlet mode. Background Art

[0002] With the rapid development of fire alarm systems, the requirements for the sensitivity and orientation consistency of detectors are getting higher and higher. Inside the smoke detector, the labyrinth cover usually covers the labyrinth, and smoke particles invade the labyrinth through the labyrinth cover. Therefore, the labyrinth cover inside the smoke detector is crucial to the overall smoke intake effect of the labyrinth. Most traditional labyrinth cover smoke intake methods are side or inclined, and there will be some directions that are not conducive to smoke entering the detection area, resulting in poor sensitivity in some directions. Summary of the invention

[0003] In view of the problem that the smoke detector has poor sensitivity due to the existing labyrinth cover structure and smoke intake method, the present invention provides a smoke detector labyrinth cover with an inclined top smoke intake method.

[0004] The present invention adopts the following technical solutions:

[0005] A smoke detector labyrinth cover with an inclined top smoke inlet method comprises an annular inclined panel and a truncated cone-shaped upper cover body, an annular flat plate is connected between the upper end of the annular inclined panel and the lower end of the upper cover body, and multiple rows of smoke inlet holes arranged in an annular shape are arranged on the annular inclined panel, the side surface of the upper cover body and the annular flat plate.

[0006] Preferably, the angle between the annular inclined plate and the horizontal plane is between 20° and 80°.

[0007] Preferably, the angle between the side surface of the upper cover body and the horizontal plane is between 20° and 60°.

[0008] Preferably, the sum of the horizontal projection areas of all smoke inlets is between 100 and 500 mm. 2 between.

[0009] Preferably, the smoke inlet hole is opened perpendicular to the plane, and the depth of the smoke inlet hole is between 0.5 and 3 mm.

[0010] Preferably, the annular inclined plate, the upper cover body and the annular flat plate are an integrated structure.

[0011] The present invention has the following beneficial effects:

[0012] The labyrinth cover provided by the present invention, by arranging an annular inclined panel, the side of the upper cover body and the annular flat plate, utilizes the smoke inlet holes thereon to simultaneously let in smoke, thereby enhancing the smoke intake effect, improving the smoke sensitivity of the smoke detector, and effectively solving the problem that some orientations of the existing labyrinth cover are not conducive to smoke intake, and has excellent orientation performance; the smoke inlet holes are opened perpendicular to the plane, and the depth of the smoke inlet holes is between 0.5 and 3 mm, which can effectively prevent ambient light from entering, and at the same time facilitate smoke particles to directly enter the detection area. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a top-down stereoscopic view of the smoke detector maze cover with an inclined top smoke inlet method.

[0014] Figure 2 This is a side view of the smoke detector maze cover with inclined top smoke entry.

[0015] Figure 3 This is a top-down stereoscopic view of the smoke detector maze cover with an inclined top smoke inlet method.

[0016] Figure 4 This is a cross-sectional view of the smoke detector maze cover with inclined top smoke entry. DETAILED DESCRIPTION

[0017] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0018] Combination Figures 1 to 4 A smoke detector labyrinth cover with an inclined top smoke inlet method comprises a ring-shaped inclined panel 1 and a truncated cone-shaped upper cover body 2.

[0019] An annular flat plate 3 is connected between the upper end of the annular inclined plate 1 and the lower end of the upper cover body 2. Multiple rows of smoke inlet holes 4 arranged in an annular shape are arranged on the annular inclined plate 1, the side surface of the upper cover body 2 and the annular flat plate 3.

[0020] The annular inclined panel, the upper cover body and the annular flat panel are an integrated structure.

[0021] The annular inclined panel, the upper cover body and the annular flat panel are all made of plastic.

[0022] An annular cover edge 5 perpendicular to the plane is connected to the lower end of the annular inclined plate.

[0023] The smoke inlet holes on the annular inclined panel 1, the side of the upper cover body 2 and the annular flat panel 3 enhance the smoke intake effect, improve the smoke sensitivity of the smoke detector, effectively solve the problem that some orientations of the existing maze cover are not conducive to smoke intake, and have excellent orientation performance.

[0024] The angle between the annular inclined plate and the horizontal plane is between 20° and 80°.

[0025] The angle between the side surface of the upper cover body and the horizontal plane is between 20° and 60°.

[0026] The total horizontal projection area of ​​all smoke inlets is between 100 and 500 mm 2 between.

[0027] The smoke inlet hole is opened perpendicular to the plane, and the depth of the smoke inlet hole is between 0.5 and 3 mm.

[0028] The structure of the smoke inlet can effectively prevent ambient light from entering, while facilitating smoke particles to directly enter the detection area.

[0029] Example 1

[0030] In a best embodiment, the angle between the annular inclined plate and the horizontal plane is 29°, and the angle between the side surface of the upper cover and the horizontal plane is 43°.

[0031] In this embodiment, the smoke intake effect of the labyrinth cover is optimal.

[0032] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A smoke detector labyrinth cover with inclined top smoke inlet, characterized in that: It includes an annular inclined panel and a truncated cone-shaped upper cover body, wherein an annular flat plate is connected between the upper end of the annular inclined panel and the lower end of the upper cover body, and multiple rows of smoke inlet holes arranged in an annular pattern are arranged on the annular inclined panel, the side surface of the upper cover body and the annular flat plate; The angle between the annular inclined plate and the horizontal plane is between 20° and 80°; The angle between the side surface of the upper cover and the horizontal plane is between 20° and 60°; The total horizontal projection area of ​​all smoke inlets is between 100 and 500 mm 2 between; The smoke inlet hole is opened perpendicular to the plane, and the depth of the smoke inlet hole is between 0.5 and 3 mm; The annular inclined plate, the upper cover body and the annular flat plate are an integrated structure.

Citation Information

Patent Citations

  • Labyrinth sheath of smoke-sensing detector

    CN101794493A

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    CN210865015U