High-precision insect-proof anti-interference smoke detector labyrinth

Abstract

The invention discloses a high-precision insect-proof anti-interference smoke detector labyrinth in the technical field of smoke alarms, the high-precision insect-proof anti-interference smoke detector labyrinth comprises a smoke detection labyrinth body, a forward emission lamp, a backward emission lamp, a shading plate and a labyrinth cover, induction light is emitted through the forward emission lamp and the backward emission lamp, the light is detected through a receiving end, and the smoke detection labyrinth is formed. The smoke detection maze has the advantages that the main light emitted by the forward emission lamp and the intersection detection area generated by the receiving end in a one-to-one manner can be suspended in the smoke detection maze body, the sensitive area interfered by insects can be effectively reduced, false alarm caused by disturbance generated by the insects can be effectively avoided, and the smoke detection maze can be used in different maze shapes. According to the smog detection device, a receiving area needing to block light can be effectively shaded, convenience can be provided for accelerated inflow of smog through a large ventilation opening, the detection sensitivity of the smog can be improved, a different light source is additionally arranged, dual detection of the smog is achieved, the probability of misinformation is effectively reduced, and the smog blocking strength can be detected.

Description

Technical Field

[0001] This invention relates to the field of smoke alarm technology, and in particular to a high-precision, insect-proof, and interference-resistant smoke detector maze. Background Technology

[0002] Smoke detectors are typically enclosed in a casing. The core component is the light source, which consists of two infrared emitters and an infrared receiver to receive signals from the light source. This light source emits pulsed light, and the entire device must be housed in a dark box to prevent external light from affecting its detection sensitivity.

[0003] Therefore, the internal structure of this smoke maze creates a dark environment with convenient ventilation, ensuring that when smoke appears, it can enter the alarm maze more quickly and without obstruction, and block or reflect the diode light source more quickly and effectively, thereby achieving the alarm effect.

[0004] All smoke detector mazes need good ventilation and minimal external stray light to ensure more sensitive detection. Another very important factor is the obstruction of light by insects. If an insect enters the smoke detector and crawls into the sensitive detection area, it will block the light and cause a false alarm when the receiver inside the smoke detector detects abnormal light.

[0005] Poor ventilation in the dark room and continuous intrusion of stray light that is detected by the receiver can cause the smoke alarm to be delayed or fail to sound. Insects entering and blocking the light can also cause false alarms, which is the biggest problem with smoke alarms.

[0006] Based on this, the present invention designs a high-precision insect-proof and interference-resistant smoke detector maze to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a high-precision insect-proof and interference-resistant smoke detector maze. It incorporates an insect-proof net to block large insects, suspending the intersection detection area created by the main forward-emitting light and the receiver within the smoke detection maze. Furthermore, the light source is suspended within the maze, maintaining a certain distance between the light source and the bottom plate of the smoke detection maze and the maze cover. This effectively prevents light from being blocked or reflected by small insects entering the maze. Moreover, through different maze designs, this device can effectively shield the receiving area where light needs to be blocked, while also facilitating the accelerated flow of smoke through large ventilation openings in the light-emitting area, thus improving the smoke detection sensitivity. The addition of a different light source enables dual smoke detection, effectively reducing the probability of false alarms and detecting the intensity of smoke obstruction, thereby more accurately detecting and alarming smoke of different concentrations.

[0008] This invention is implemented as follows: a high-precision insect-proof and interference-resistant smoke detector maze, comprising: Smoke detector maze, forward-facing light, backward-facing light, light shield, and maze cover; The smoke detector maze is a hollow open box formed by a maze ring enclosing a base plate. The maze ring of the smoke detector maze is a ring fence composed of human-shaped light-blocking ribs, Z-shaped light-blocking ribs and reflectors. The human-shaped light-blocking ribs, Z-shaped light-blocking ribs and reflectors are connected end to end to form a complete ring maze wall. The circuit board is a flat plate, which is stably covered on the outer wall of the bottom plate of the smoke detection maze. The bottom plate of the smoke detection maze also has insect-attracting holes. The back of the smoke detection maze has a downward-recessed insect-attracting groove, and the inner cavity of the smoke detection maze is connected to the insect-attracting groove through the insect-attracting holes. The insect-attracting groove and the circuit board are covered to form a closed light-proof dark room. A pre-installed positioning seat is also fixedly installed on the front of the circuit board, and the circuit board can be detachably docked to the outer wall of the bottom plate of the smoke detector maze through the pre-installed positioning seat. The front of the pre-installed positioning seat extends into the smoke detection labyrinth body; Both the forward-emitting lamp and the backward-emitting lamp are light-emitting diodes; The forward emitting light, the backward emitting light, and the receiver are all mounted on a pre-installed positioning base; the forward emitting light, the backward emitting light, and the receiver all extend into the cavity of the smoke detector labyrinth body through the pre-installed positioning base; The forward-emitting light extends into the cavity of the smoke-detecting maze without contacting the maze wall; The rear-emitting light is located on the inner wall of the maze wall with Z-shaped light-blocking ribs; The receiving end is located on the inner wall of the maze wall of the human-shaped light-blocking rib; The rear-emitting lamp is directed towards the reflector, and the receiving end is also directed towards the reflector. The forward-emitting light is directed toward the human-shaped light-blocking rib, and the receiving end is directly in the path of the forward-emitting light. The light-shielding plate is a flat plate, which is vertically installed inside the smoke detection maze. The smoke detection maze is divided into two separate spaces by the light-shielding plate. One end of the light-shielding plate is at the junction of the human-shaped light-blocking rib and the Z-shaped light-blocking rib, and the other end of the light-shielding plate is directly opposite the center of the groove of the reflector. Both the forward-emitting lamp and the backward-emitting lamp are located within the light-emitting area space enclosed by the Z-shaped light-blocking rib and the light-shielding plate. The receiving end is located within the detection area space enclosed by the human-shaped light-blocking rib and the light-shielding plate. The backward-emitting lamp and the receiving end are respectively attached to the two sides of the light-shielding plate. One side of the maze cover is a flat base plate, and the other side of the maze cover is a ring-shaped insect-proof net. The insect-proof net is vertically connected to the base plate of the maze cover. The maze cover and the insect-proof net form an integral circular cover. The smoke detector maze body is fitted into the cover of the maze cover. The maze cover and the smoke detector maze body can be detached and closed into a circular box. The insect-proof net is fitted and sleeved on the outer wall of the ring maze wall. The forward-emitting lamp, the receiver, and the backward-emitting lamp are all electrically connected to the circuit board.

[0009] Furthermore, the human-shaped light-blocking rib is a ventilated maze wall composed of multiple herringbone-shaped baffles stacked sequentially. The pointed end of the human-shaped light-blocking rib is horizontally positioned and faces the direction of the Z-shaped light-blocking rib. The Z-shaped light-blocking rib is composed of multiple Z-shaped baffles connected in sequence to form a ventilated maze wall. The two sides of the Z-shaped baffles face the inner and outer sides respectively. The Z-shaped baffle is an integral structure composed of three mutually perpendicular baffles, so that the inner and outer sides of the Z-shaped light-blocking rib are both flat. The reflector is a U-shaped groove baffle, with the opening side facing inwards. The two sides of the U-shaped groove are V-shaped structures that open outwards at an angle, with the open side facing inwards. Reflective paint is added to the reflector to enhance its reflective effect.

[0010] Furthermore, the forward-emitting light, the rear-emitting light, the human-shaped light-blocking rib, the Z-shaped light-blocking rib, the reflector, the smoke detector maze body, and the maze cover do not come into contact; The height interval between the forward-emitting light and the base plate and maze cover of the smoke detection maze is between 4-8mm; The forward-emitting light and the rear-emitting light are at the same height, and the light-emitting path of the forward-emitting light is at the front end of the light-shielding plate, and the light-shielding plate does not block the emitted light of the forward-emitting light.

[0011] Furthermore, the light-shielding plate is a flat plate with a serrated pattern on one side, and the serrated pattern of the light-shielding plate faces the receiving end. The smoke detector maze body and maze cover are also provided with serrated textures on the inner wall of the bottom plate of the detection area.

[0012] Furthermore, the light-emitting area of ​​the light-emitting plate is also vertically provided with a labyrinth-shaped end baffle, which is a flat plate and blocks the light-emitting path of the rear-emitting lamp. The inner side of the maze cover is also provided with a vertically arranged maze cover end baffle. The maze cover end baffle and the maze body end baffle are aligned in the same plane, and the maze body end baffle and the maze cover end baffle do not contact each other. The gap between the maze body end baffle and the maze cover end baffle forms a square window. The rear-emitting light emits light directly towards the square window, and the rear-emitting light and the reflector are respectively located on both sides of the square window.

[0013] Furthermore, a pre-installed positioning seat is fixedly provided on the front side of the circuit board, and the circuit board can be detachably docked to the outer wall of the bottom plate of the smoke detector maze through the pre-installed positioning seat.

[0014] Furthermore, the maximum mesh size of the insect-proof net does not exceed 0.8 mm.

[0015] The beneficial effects of this invention are: 1. By emitting sensing light through forward and backward emitting lights, and detecting the light through a receiver, the detection area generated by the main forward emitting light and the receiver is suspended within the smoke detection maze, without contact with other structures. This effectively reduces the sensitive area affected by insects, thus preventing false alarms caused by disturbances caused by small insects entering the maze. Furthermore, the device uses different maze shapes to effectively block light in the receiving area and facilitates the flow of smoke through large ventilation openings in the emitting area, improving the sensitivity of smoke detection. It also adds a different light source, achieving dual smoke detection, which not only effectively reduces the probability of false alarms but also detects the strength of smoke blocking, thus more accurately detecting and alarming smoke of different concentrations.

[0016] 2. By lowering the height of the light-blocking panel by 1.5mm, combined with the insect-proof net and maze installation method, the path of small insects climbing up from the bottom is blocked, which enhances the avoidance of interference with small insects and improves the insect-proof effect.

[0017] Design logic: The insect-proof net has a mesh spacing of 0.8mm, so only insects smaller than 0.8mm can enter the maze. When not flying, insects smaller than 0.8mm cannot block the suspended detection area, thus effectively reducing the interference of insects on the device.

[0018] The maze is installed in a fixed orientation, with the circuit board end facing the top and the maze cover end facing downwards.

[0019] After the height of the light-blocking plate is reduced, the light-blocking plate, which serves as a sensitive detection area, is separated from the bottom of the maze, blocking the path for small insects to climb up from the bottom and greatly reducing the possibility of insects entering the sensitive detection area.

[0020] 3. Applying reflective strips or reflective paint to the reflector increases the intensity of reflection, making detection more sensitive and greatly improving the recognition effect of smoke features. At the same time, it also reduces the power of the emission tube, saves more electricity, and effectively extends the battery life.

[0021] 4. This device also includes completely dark insect-attracting slots and holes, which can lure insects into the slots or holes based on their burrowing habits. By targeting the fact that insects cannot fly, this device designs the detection sensitive area at a mid-height position in an unsupported cavity, thus avoiding the range of insect activity. Therefore, this device performs dual attraction and avoidance, further reducing the chance of insects falsely triggering the alarm.

[0022] 5. This device features a design with human-shaped and Z-shaped light-blocking ribs. The human-shaped light-blocking ribs in the detection area, through their denser herringbone-shaped light-blocking effect, effectively reduce stray light entry. The light-blocking plate also blocks the light-emitting area on the other side, effectively reducing stray light interference. Meanwhile, the Z-shaped light-blocking ribs, placed in the light-emitting area, do not affect light reception. The Z-shaped maze plate increases the size of the smoke inflow channel, ensuring that external smoke can enter the smoke detector maze more smoothly, achieving a timely alarm effect. Furthermore, the inner plate and reflector of the Z-shape can reflect light, concentrating and focusing the light more precisely on the receiving end for sensitive light detection. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the structure from an upward viewing angle in the actual exam questions of this invention; Figure 2 This is a top view of the structure of the present invention in its installed state; Figure 3 This is a schematic diagram of the overall structure of the invention from a bottom-view perspective; Figure 4 This is a schematic diagram of the overall structure of the present invention in its disassembled state; Figure 5 This is a schematic diagram of the internal front structure of the smoke detection labyrinth body of the present invention; Figure 6 This is a schematic diagram of the front structure of the circuit board of the present invention; Figure 7 This is a schematic diagram of the insect-attracting groove structure of the present invention; Figure 8 This is a schematic diagram of the light emission paths and light receiving paths of the forward-emitting lamp and the rear-emitting lamp of the present invention.

[0025] The attached diagram lists the components represented by each number as follows: 1-Smoke detector maze body, 11-Human-shaped light-blocking rib, 12-Z-shaped light-blocking rib, 13-Reflector, 14-Insect-attracting hole, 15-Insect-attracting groove, 2-Forward-facing emitting light, 21-Receiver, 22-Rearward-facing emitting light, 23-Antenna, 3-Light-shielding plate, 31-Maze body end baffle, 4-Circuit board, 41-Pre-installed positioning seat, 5-Maze cover, 51-Insect-proof net, 52-Maze cover end baffle. Detailed Implementation

[0026] Please see Figures 1 to 8 As shown, the present invention provides a high-precision insect-proof and interference-resistant smoke detector maze. In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In a specific embodiment of the technical solution of the present invention: It includes a smoke detection maze body 1, a forward-emitting light 2, a backward-emitting light 22, a light shield 3, and a maze cover 5; The smoke detection maze body 1 is a hollow box with one end open. The side wall of the smoke detection maze body 1 is a ring fence composed of human-shaped light-blocking ribs 11, Z-shaped light-blocking ribs 12 and reflectors 13. The human-shaped light-blocking ribs 11, Z-shaped light-blocking ribs 12 and reflectors 13 are connected end to end to form a complete ring maze wall. Both the forward-emitting lamp 2 and the backward-emitting lamp 22 are light-emitting diodes.

[0028] The forward-emitting light 2, the backward-emitting light 22, and the receiver 21 are all mounted on the pre-installed positioning base 41; the forward-emitting light 2, the backward-emitting light 22, and the receiver 21 all extend into the cavity of the smoke detection labyrinth body 1 through the pre-installed positioning base 41.

[0029] The forward-emitting light 2 extends into the cavity of the smoke-detecting maze body 1 without contacting the maze wall.

[0030] The rear-emitting light 22 is located on the inner wall of the maze wall of the Z-shaped light-blocking rib 12; The receiver 21 is located on the inner wall of the maze wall of the human-shaped light-blocking rib 11; The rear-emitting lamp 22 is illuminating the reflector 13, and the receiving end 21 is also illuminating the reflector 13. The receiving end 21 is located at the end of the reflection path of the light emitted by the rear-emitting lamp 22 through the reflector 13, meaning that the light emitted by the rear-emitting lamp 22 is directly illuminating the reflector 13. The light is reflected by the reflector 13, and the light reflected by the reflector 13 from the rear-emitting lamp 22 illuminates the receiving end 21. Structurally, the rear-emitting lamp 22 and the receiving end 21 are symmetrically arranged on both sides of the maze wall of the smoke detection maze body 1. Furthermore, both the rear-emitting light 22 and the receiver 21 are positioned on the opposite side of the reflector 13. After being reflected by the reflector 13, the receiver 21 receives the light from the rear-emitting light 22. At the same time, the rear-emitting light 22 and the receiver 21 need to be as close as possible so that the light emitted by the rear-emitting light 22, after being reflected by the reflector 13, reaches the farthest light reflection path between the receiver 21 and the rear-emitting light 22. This allows the difference in intensity between long-distance and short-distance light within the entire smoke alarm maze to be obtained, thus determining the degree of smoke attenuation at different distances and ultimately judging the smoke concentration within the smoke detection maze 1.

[0031] The forward-emitting light 2 is directed towards the human-shaped light-blocking rib 11, and the receiving end 21 is directly in the path of the light beam from the forward-emitting light 2, and is exactly aligned with the edge of the light-blocking plate 3, which facilitates faster detection of smoke entering the smoke detection maze 1 and makes the detection more sensitive. The forward-emitting light 2 does not contact or block each other, nor does it obstruct each other, thus avoiding mutual interference and ensuring that the light is not blocked. Most importantly, the forward-emitting light 2 is suspended in the air so that the detection light is not interfered with by small insects. The front of the pre-installed positioning base 41 extends into the smoke detection maze body 1. The forward-emitting light 2 is fixedly installed on the pre-installed positioning base 41. The forward-emitting light 2 extends into the cavity of the smoke detection maze body 1 through the pre-installed positioning base 41, so that the forward-emitting light 2 is suspended and fixed in the cavity of the smoke detection maze body 1. The height interval between the forward-emitting light 2 and the bottom plate of the smoke detection maze body 1 and the maze cover 5 is between 4-8mm. The optimal height interval between the forward-emitting light 2 and the bottom plate of the smoke detection maze body 1 and the maze cover 5 is 6mm on both the top and bottom sides. That is, the forward-emitting light 2 should be in a suspended state. The horizontal distance between the forward-emitting light 2 and the side wall of the maze body 1 should also be 6mm. As long as it is supported by a bracket of the pre-installed positioning base 41 inside the maze body 1, the entire forward-emitting light 2 is installed and positioned in a suspended state inside the maze body 1. The forward-emitting light 2, the receiver 21, and the backward-emitting light 22 are all inserted into the smoke detection labyrinth body 1 through the pre-installed positioning seat 41, and the insertion height is the same.

[0032] The forward-emitting lamp 2 and the backward-emitting lamp 22 are at the same height, and the light path of the forward-emitting lamp 2 is at the front end of the light-shielding plate 3. The light-shielding plate 3 does not block the emitted light of the forward-emitting lamp 2. Thus, the intersection detection area generated by the light emitted by the forward-emitting lamp 2 and the receiving end is suspended in the smoke detection maze, without contact with other structures. This effectively reduces the sensitive area that may be disturbed by insects, thereby effectively avoiding the disturbance caused by small insects entering the maze and triggering false alarms. Small insects that enter the maze can also be induced to leave, effectively reducing the influence of other external factors on the detection results.

[0033] The human-shaped light-blocking rib 11 is a ventilation labyrinth wall composed of multiple herringbone-shaped baffles stacked one after another. The pointed end of the human-shaped light-blocking rib 11 is set horizontally and faces the direction of the Z-shaped light-blocking rib 12. The Z-shaped light-blocking rib 12 consists of multiple Z-shaped baffles connected in sequence to form a ventilated maze wall. The two sides of the Z-shaped baffles face the inside and outside respectively. The Z-shaped baffle is an integral structure composed of three mutually perpendicular baffles, so that the inside and outside sides of the Z-shaped light-blocking rib 12 are both flat. The reflector 13 is a U-shaped groove baffle, with its opening side facing inwards. The two sides of the U-shaped groove of the reflector 13 are V-shaped structures that open outwards at an angle, with the open side facing inwards. Adding reflective paint or a reflective sheet, or even a thin, mirror-like aluminum sheet, to the reflector increases its reflectivity, reflecting the light emitted by the rear-emitting lamp 22, thus increasing the intensity of the reflected light, making detection more sensitive, and greatly improving the identification effect of smoke features.

[0034] The light shield 3 is a flat plate, and the light shield 3 is vertically installed inside the smoke detection maze body 1. The smoke detection maze body 1 is divided into two separate spaces by the light shield 3. One end of the light shield 3 is at the junction of the human-shaped light-blocking rib 11 and the Z-shaped light-blocking rib 12, and the other end of the light shield 3 is directly opposite the center of the groove of the reflector 13. The space enclosed by the Z-shaped light-blocking rib 12 and the light-shielding plate 3 is the light-emitting area, and the space enclosed by the human-shaped light-blocking rib 11 and the light-shielding plate 3 is the detection area. The forward-emitting lamp 2 and the backward-emitting lamp 22 are both located within the light-emitting area enclosed by the Z-shaped light-blocking rib 12 and the light-shielding plate 3. The receiving end 21 is located within the detection area enclosed by the human-shaped light-blocking rib 11 and the light-shielding plate 3, and the backward-emitting lamp 22 and the receiving end 21 are respectively attached to the two sides of the light-shielding plate 3. The light shield 3 is a flat plate with a serrated pattern on one side. The serrated pattern of the light shield 3 faces the receiver 21. That is, the serrated pattern is located in the detection area of ​​the smoke detector labyrinth 1 and is directly facing the receiver 21. It effectively blocks the light from the rear-emitting lamp. The serrated plane can reduce internal reflection interference. Through the serrated structure, it avoids the formation of an effective reflection surface by stray light, thereby effectively improving the effective value of the smoke signal and reducing the requirement of this device for the smoke signal itself.

[0035] Therefore, serrated patterns are also provided on the inner walls of the bottom plates of the smoke detection maze body 1 and the maze cover 5, and are only provided on one side of the detection area to reduce the effective reflection of non-smoke detection, so that the receiver 21 only detects the light emitted by the forward emitting lamp 2 and the backward emitting lamp 22.

[0036] The light-emitting area of ​​the light-shielding plate 3 is also vertically provided with a maze-shaped end baffle 31. The maze-shaped end baffle 31 is a flat plate and blocks the light-emitting path of the rear-emitting lamp 22. A vertically arranged maze cover end baffle 52 is also provided on the inner side of the maze cover 5. The maze cover end baffle 52 and the maze body end baffle 31 are aligned in the same plane, and the maze body end baffle 31 and the maze cover end baffle 52 do not contact each other. The gap between the maze body end baffle 31 and the maze cover end baffle 52 forms a square window. The rear-emitting lamp 22 emits light directly towards the square window. The rear-emitting lamp 22 and the reflector 13 are located on the front and back sides of the square window, respectively. The front side of this device refers to the side of the reflector 13, and the rear side refers to the side of the receiver 21, which is the end side of the light path. The reflection paths of the rear-emitting lamp 22 and the receiver 21 are shown by the dotted line in the figure, and the included angle α is 20°. This allows the rear-emitting lamp 22 and the receiver 21 to be closer together, so that the light reflection distance between the rear-emitting lamp 22 and the receiver 21 is basically the longest distance inside the smoke detection maze 1, thereby maximizing the detector's recognition effect of smoke features.

[0037] The light emitted by the rearward-emitting lamp 22 passes through the window formed by the end baffle 31 of the maze body and the end baffle 52 of the maze cover and shines on the reflector 13. Therefore, only the middle area of ​​the light emitted by the rearward-emitting lamp 22 shines on the reflector 13. Only the light suspended in this area enters the detection area of ​​the smoke detection maze body 1. The effective light is more concentrated, so the device only detects the local sensitive area, avoiding multiple interference factors and achieving a highly sensitive smoke detection effect.

[0038] A pre-installed positioning seat 41 is fixedly installed on the front of the circuit board 4. The circuit board 4 can be detachably connected to the outer wall of the bottom plate of the smoke detection labyrinth body 1 through the pre-installed positioning seat 41. The pre-installed positioning seat 41 is a support rod. The back of the pre-installed positioning seat 41 is fixedly attached to the circuit board 4 to form an integral structure. The pre-installed positioning seat 41 also has a clearance hole 43, which corresponds to the position of the insect-attracting hole 14. The pre-installed positioning seat 41 and the circuit board 4 have a closed groove, which facilitates the connection between the internal space of the smoke detection labyrinth body 1 and the internal groove of the pre-installed positioning seat 41 and the circuit board 4. The pre-installed positioning seat 41 is also provided with a plug buckle 42, which can be inserted and locked with the smoke detection labyrinth body 1. The pre-installed positioning seat 41 and the plug buckle 42 can be connected to the circuit board 44. The engagement of the snap fastener 42 locks the circuit board 4 to the base plate of the smoke detector maze 1, facilitating the production and installation of the smoke detector maze 1 and the circuit board 4. The circuit board 4 is a flat PCB board that stably covers the outer wall of the base plate of the smoke detector maze 1. The base plate of the smoke detector maze 1 also has insect-attracting holes 14. The back of the smoke detector maze 1 has a downward-recessed insect-attracting groove 15, and the inner cavity of the smoke detector maze 1 is connected to the insect-attracting groove 15 through the insect-attracting holes 14. The insect-attracting groove 15 and the circuit board 4 are covered to form a closed, light-proof darkroom. This structure can save the space inside the entire maze, making it easier to miniaturize the maze and install it in more different environments and shells. The pre-installed positioning base 41 is also equipped with a spring antenna 23 for signal transmission, which is a common wireless signal transmission device in this type of smoke alarm.

[0039] The insect-attracting groove 15 and the pre-installed positioning seat 41 have the same shape and also serve to interlock and connect with each other, ensuring that the insect-attracting groove 15 and the pre-installed positioning seat 41 are tightly fitted together and sealed. This ensures that the alignment of the circuit board 4 and the smoke detector labyrinth body 1 is correct. It is also important to ensure that the darkroom between the insect-attracting groove 15 and the pre-installed positioning seat 41 is unaffected and is light-blocked.

[0040] The maze cover 5 is a flat plate, and an insect-proof net 51 is vertically installed along the side wall edge of the maze cover 5. The maze cover 5 and the insect-proof net 51 form an integral circular cover. The smoke detection maze body 1 is fitted into the cover of the maze cover 5. The maze cover 5 and the smoke detection maze body 1 can be detached and fit together as a circular closed box. The outer wall of the annular maze wall formed by the human-shaped light-blocking rib 11, the Z-shaped light-blocking rib 12 and the reflector 13 is fitted onto the inner side of the insect-proof net 51, thereby forming a double-layer light-blocking and protective effect, effectively preventing flying insects and other debris from entering the smoke detection maze body 1, and also effectively isolating the influence of external stray light on this device. The maximum mesh size of the insect-proof net 51 is no more than 0.8mm, which allows the insect-proof net 51 to block most small insects.

[0041] The forward-emitting light 2, receiver 21, and rearward-emitting light 22 are all installed inside the enclosed box of the maze cover 5 and the smoke detection maze body 1. The pins of the forward-emitting light 2, receiver 21, and rearward-emitting light 22 are electrically connected to the circuit board 4 through the pre-installed positioning seat 41. The electrical connection and battery connection of the circuit board 4 are the circuit structure of a conventional smoke alarm. This device mainly involves changing the position and light path to form a more complete smoke detection space between the smoke detection maze body 1 and the maze cover 5. At the same time, it has good ventilation performance and is not affected by the obstruction of small insects.

[0042] It should be noted that: 1. While insects are indeed phototactic, they are generally adults. Adults are larger, and insect nets can effectively block all normal flying insects, especially the fine mesh of this device's insect net 51. Normal phototactic flying insects cannot pass through the insect net 51. Moreover, this device blocks light, creating a dark space. Therefore, phototactic flying insects will not have the intention to enter the smoke detection maze 1 of this device. Insects also have a burrowing characteristic. When they are not flying and need to find a safe environment, they have the habit of burrowing into small holes and enclosed dark rooms. The insect-attracting slot 15 in this device is a dead end. Once an insect enters, it is difficult for it to turn around and leave. Since insects do not have the ability to retreat, this device can guide and drive away insects through the insect-attracting slot 15, thereby effectively reducing the interference of insects on the detection results of this device; ensuring that it is smoke, not insects, that blocks the light. In special circumstances, when insects block the light source, they will not block two light sources at the same time. 2. Neither of the two light sources in this device is attached to the smoke detection maze or its bottom plate, effectively avoiding the areas and heights where insects typically move. This ensures the light is not blocked and takes advantage of the insects' inability to levitate, further reducing the chance of false alarms. Furthermore, the detection area of ​​this device is located at the middle height of the entire smoke detection maze 1, meaning both the receiver 21 and the emitted light are in a suspended state, and the maze walls are not detected, significantly reducing the sensitive detection area. If insects crawl on the maze walls, it will not affect the detection performance of the detector, further reducing the false alarm rate. 3. This device divides the entire smoke detection maze 1 into two different functional areas through the light shield 3. The light shield 3 and the Z-shaped light-blocking rib 12 have better ventilation, which facilitates the entry of smoke and effectively improves the detection sensitivity. The light shield 3 and the human-shaped light-blocking rib 11 form the detection area. The human-shaped structure allows for a denser arrangement, and the edges of the human-shaped structure also have the characteristic of absorbing light. The small reflective surface means less reflected light, which blocks the light more completely and forms a dark detection area. This reduces the interference of external stray light in the maze and allows for more effective light signals. The entire smoke detection maze 1 can facilitate the entry of smoke and accurately detect smoke in the dark room.

[0043] 4. The height of the light-shielding plate 3 is reduced by 1.5mm, meaning the overall height of the light-shielding plate 3 is lower, creating a gap between the bottom edge of the light-shielding plate 3 and the bottom plate of the maze cover 5, with the gap being no less than 1.5mm. Combined with the installation method of the insect-proof net 51 and the maze, this blocks the path for small insects to climb up from the bottom, enhancing the prevention of interference with small insects and improving the insect-proof effect.

[0044] The insect-proof net has a mesh spacing of 0.8mm, so only insects smaller than 0.8mm can enter the maze. The light-shielding plate 3 and the bottom plate of the maze cover 5 are separated by at least 1.5mm. This disconnects the light-shielding plate 3 from the maze cover 5, blocking the climbing path of small insects from the bottom plate of the smoke-detecting maze body 1 to the bottom plate of the maze cover 5. The closer to the maze cover 5, the more likely it is to be accidentally triggered. Therefore, the height of the forward-emitting lamp 2, the rearward-emitting lamp 22, and the receiver 21 is the sensitive detection area, thus significantly reducing the possibility of insects entering the sensitive detection area.

[0045] In the installation state molding operation of the present invention, the back of the circuit board 4 is fixed and locked to the bottom of the smoke detector maze shell by the positioning post, and the pre-installed positioning seat 41 is integrated with the circuit board 4. The smoke detector maze body 1 and the circuit board 4 are stably clamped by the pre-installed positioning seat 41.

[0046] The forward-facing light 2 is installed on the pre-installed positioning base 41, and after installation, its position is inside the smoke detection labyrinth body 1.

[0047] The rear-emitting light 22 is installed on the pre-installed positioning base 41, and after installation, it is positioned on the inner wall of the maze wall of the smoke detection maze body 1. The receiver 21 is installed on the pre-installed positioning base 41, and after installation, it is located on the inner wall of the maze wall of the smoke detection maze body 1. At this time, the forward emitting light 2 and the backward emitting light 22 are located at the middle height plane inside the smoke detection maze body 1. The forward emitting light 2 is unobstructed in front, behind, left, and right, with only a pre-installed positioning seat 41 at the bottom for support and lifting. The receiving end 21 is also at the middle height position to detect the light.

[0048] When there is a fire, smoke fills the entire smoke detection maze 1, and the light intensity of the forward-emitting lamp 2 and the backward-emitting lamp 22 will be attenuated by the smoke. The detection methods of the forward-emitting lamp 2 and the backward-emitting lamp 22 are different. The forward-emitting lamp 2 detects the middle section of the light, while the backward-emitting lamp 22 directly reflects the light into the receiver 21.

[0049] The interior of this device refers to the interior of the smoke detection maze body 1, while the exterior refers to the exterior of the overall structure. "Middle" refers to the midpoint in the diagram, and the midpoint height of the smoke detection maze body 1 and the maze cover 5 refers to the midpoint plane between the upper and lower surfaces. The indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0050] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A high-precision insect-proof and interference-resistant smoke detector maze, characterized in that, include: Smoke detection maze body (1), forward emitting light (2), backward emitting light (22), light shield (3) and maze cover (5); The smoke detection maze body (1) is a hollow open box body formed by a maze ring enclosing a base plate. The maze ring of the smoke detection maze body (1) is a ring fence composed of human-shaped light-blocking ribs (11), Z-shaped light-blocking ribs (12) and reflectors (13). The human-shaped light-blocking ribs (11), Z-shaped light-blocking ribs (12) and reflectors (13) are connected end to end to form a complete ring maze wall. The human-shaped light-blocking rib (11) is a ventilation maze wall composed of multiple herringbone-shaped baffles stacked one after another. The pointed end of the human-shaped light-blocking rib (11) is set horizontally, and the pointed end of the human-shaped light-blocking rib (11) faces the direction of the Z-shaped light-blocking rib (12). The Z-shaped light-blocking rib (12) is a series of Z-shaped baffles connected in front and behind to form a ventilated maze wall. The two sides of the Z-shaped baffle face the inner and outer sides respectively. The Z-shaped baffle is an integral structure composed of three mutually perpendicular baffles, so that the inner and outer sides of the Z-shaped light-blocking rib (12) are both flat. The reflector (13) is a U-shaped groove baffle. The opening side of the reflector (13) faces inward, and the two sides of the U-shaped groove of the reflector (13) are a figure-eight structure that opens to both sides. The opening side of the reflector (13) faces inward. The circuit board (4) is a flat plate. The circuit board (4) is stably covered on the outer wall of the bottom plate of the smoke detection maze body (1). The bottom plate of the smoke detection maze body (1) also has an insect-attracting hole (14). The back of the smoke detection maze body (1) has a downward-recessed insect-attracting groove (15). The inner cavity of the smoke detection maze body (1) is connected to the insect-attracting groove (15) through the insect-attracting hole (14). The insect-attracting groove (15) and the circuit board (4) are covered to form a closed light-proof dark room. A pre-installed positioning seat (41) is also fixedly installed on the front side of the circuit board (4). The circuit board (4) can be separated and docked on the outer wall of the bottom plate of the smoke detector maze body (1) through the pre-installed positioning seat (41). The front of the pre-installed positioning seat (41) extends into the smoke detection labyrinth body (1); Both the forward-emitting lamp (2) and the backward-emitting lamp (22) are light-emitting diodes; The forward emitting light (2), the backward emitting light (22) and the receiver (21) are all mounted on the pre-installed positioning base (41); the forward emitting light (2), the backward emitting light (22) and the receiver (21) are all inserted into the cavity of the smoke detection labyrinth body (1) through the pre-installed positioning base (41); The forward-emitting light (2) extends into the cavity of the smoke-detecting maze body (1) without contacting the maze wall; The rear-emitting light (22) is located on the inner wall of the maze wall of the Z-shaped light-blocking rib (12); The receiving end (21) is located on the inner wall of the maze wall of the human-shaped light-blocking rib (11); The illumination direction of the rear-emitting lamp (22) is directly opposite to the reflector (13), and the receiving direction of the receiving end (21) is also directly opposite to the reflector (13). The forward-emitting lamp (2) is directed toward the human-shaped light-blocking rib (11), and the receiving end (21) is directly in the path of the light beam from the forward-emitting lamp (2). The light shield (3) is a flat plate. The light shield (3) is vertically mounted inside the smoke detection maze body (1). The smoke detection maze body (1) is divided into two separate spaces by the light shield (3). One end of the light shield (3) is at the junction of the human-shaped light-blocking rib (11) and the Z-shaped light-blocking rib (12). The other end of the light shield (3) is directly opposite the center of the groove of the reflector plate (13). The forward-emitting lamp (2) and the backward-emitting lamp (22) are both located in the light-emitting area space enclosed by the Z-shaped light-blocking rib (12) and the light-shielding plate (3). The receiving end (21) is located in the detection area space enclosed by the human-shaped light-blocking rib (11) and the light-shielding plate (3). The backward-emitting lamp (22) and the receiving end (21) are respectively attached to the two sides of the light-shielding plate (3). One side of the maze cover (5) is a flat base plate, and the other side of the maze cover (5) is an annular insect-proof net (51). The insect-proof net (51) is vertically connected to the base plate of the maze cover (5). The maze cover (5) and the insect-proof net (51) form an integral circular cover. The smoke detector maze body (1) is fitted into the cover of the maze cover (5). The maze cover (5) and the smoke detector maze body (1) can be detached and closed into a circular box. The insect-proof net (51) is fitted and sleeved on the outer wall of the annular maze wall. The light-emitting area of ​​the light-shielding plate (3) is also vertically provided with a maze-shaped end baffle (31). The maze-shaped end baffle (31) is a flat plate and blocks the light-emitting path of the rear-emitting lamp (22). The inner side of the maze cover (5) is also provided with a vertically arranged maze cover end baffle (52). The maze cover end baffle (52) and the maze body end baffle (31) are aligned in the same plane, and the maze body end baffle (31) and the maze cover end baffle (52) do not contact each other. The gap between the maze body end baffle (31) and the maze cover end baffle (52) forms a square window. The rear-emitting lamp (22) emits light directly into the square window, and the rear-emitting lamp (22) and the reflector (13) are located on both sides of the square window respectively; The forward-emitting lamp (2), the receiver (21), and the backward-emitting lamp (22) are all electrically connected to the circuit board (4).

2. The high-precision insect-proof and interference-resistant smoke detector maze according to claim 1, characterized in that: The inner surface of the reflector (13) is covered with reflective paint, and the angle α between the light reflection path of the rear-emitting lamp (22) and the receiver (21) relative to the reflector (13) is 20°.

3. The high-precision insect-proof and interference-resistant smoke detector maze according to claim 1, characterized in that: The forward-emitting light (2), the rear-emitting light (22), the human-shaped light-blocking rib (11), the Z-shaped light-blocking rib (12), the reflector (13), the smoke detector maze body (1) and the maze cover (5) do not contact each other; The height interval between the forward-emitting light (2) and the base plate and maze cover (5) of the smoke detection maze body (1) is between 4-8 mm; The forward-emitting lamp (2) and the rear-emitting lamp (22) are at the same height, and the light-emitting path of the forward-emitting lamp (2) is at the front end of the light-shielding plate (3). The light-shielding plate (3) does not block the emitted light of the forward-emitting lamp (2).

4. The high-precision insect-proof and interference-resistant smoke detector maze according to claim 1, characterized in that: The light shield (3) is a flat plate with a serrated pattern on one side, and the serrated pattern of the light shield (3) faces the receiving end (21). The smoke detector maze body (1) and the maze cover (5) are also provided with serrated patterns on the inner wall of the bottom plate of the detection area.

5. The high-precision insect-proof and interference-resistant smoke detector maze according to claim 1, characterized in that: The maximum mesh size of the insect-proof net (51) does not exceed 0.8 mm.

Images