Refractive luminous smoke sensing device

Abstract

The utility model discloses a refraction luminescence smoke sensing device comprising a housing, the upper surface of the housing is provided with a mounting mechanism, the middle part of the inner side surface of the housing is provided with a drainage mechanism, and the edge of the inner side surface of the housing is provided with a light sensing mechanism. According to the refraction light-emitting smoke sensing device, through the arrangement of the first refraction plate, the second refraction plate and the concave lens, light emitted by the light-emitting part irradiates the outer surface of the first refraction plate, the light is reflected to the second refraction plate through the first refraction plate, then the second refraction plate scatters the light through the concave lens, the interaction between the light and smoke particles is enhanced, and the smoke sensing effect is improved. When smoke particles enter the shell, light can be refracted, scattered or reflected, part of light can be captured by the light receiver, and if the intensity of received light signals is different from a set threshold value, the device can trigger an alarm, so that the smoke detection sensitivity is improved, and meanwhile, the false alarm rate is reduced.

Description

Technical Field

[0001] This utility model relates to the field of smoke detection devices, and in particular to a refractive light-emitting smoke detection device. Background Technology

[0002] Smoke detectors, also known as smoke alarms or smoke detectors, are devices that prevent fires by monitoring smoke concentration. Their basic working principle includes two technologies: photoelectric sensing and ionization detection. Smoke detectors are widely used in various places that require fire prevention, including homes, schools, hospitals, shopping malls, office buildings, museums, etc.

[0003] A search revealed Chinese Patent Publication No. CN217133844U, which discloses a smoke detector, including an alarm, a connector, a storage component, and a gas control assembly. The connector is attached to the alarm and has a connecting cavity and an air inlet. When the alarm needs to be tested, the gas control assembly controls the release of pre-stored smoke from the storage cavity to confirm whether the alarm emits an alarm signal based on the detected smoke, thus testing whether the alarm is functioning properly. The entire testing process can be completed simply by controlling the gas control assembly.

[0004] Although the smoke detector in the aforementioned patent can monitor smoke, the air inlet on the outer casing of the device can easily cause reflection and light leakage in the internal light sensing mechanism, which can easily lead to false alarms. Therefore, it is necessary to design a refractive light emission smoke detector to solve the above problems. Utility Model Content

[0005] The main objective of this invention is to provide a refractive light-emitting smoke detector that can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A refractive light-emitting smoke detector includes a housing. An mounting mechanism is provided on the upper surface of the housing. A flow-guiding mechanism is provided in the middle of the inner side of the housing. A light-sensing mechanism is provided at the edge of the inner side of the housing. The light-sensing mechanism includes a light-emitting element fixed to the top of the inner side of the housing. A support base is fixedly connected to one side of the inner top wall of the housing. A first refractive plate is fixedly connected to the outer surface of the support base. A second refractive plate is fixedly connected to the middle of the inner side of the housing. A concave lens is fixedly connected to the lower surface of the support base. A cover is threadedly connected to the bottom of the inner side of the housing. A light receiver is fixedly connected to the middle of the bottom wall of the cover.

[0008] In order to prevent the shell from rotating, the installation mechanism of the refractive light smoke detector of this utility model includes a connecting plate fixed to the upper surface of the shell, and a card holder is sleeved on the outer surface of the connecting plate.

[0009] In order to facilitate the fixing of the mounting plate, as a refractive light smoke detector of this utility model, the upper surface of the card holder is fixedly connected to the mounting plate, and the edge of the upper surface of the mounting plate is provided with mounting holes.

[0010] In order to facilitate the fixing of the connecting plate, as a refractive light emission smoke detector of this utility model, springs are fixedly connected to both sides of the inner side of the connecting plate, one end of the spring is fixedly connected to a limit block, and limit grooves are opened on both sides of the outer surface of the card seat.

[0011] In order to facilitate the flow of flue gas, the flow guiding mechanism of this utility model includes a first through groove on the lower surface of the housing and a second through groove at the bottom of the outer surface of the housing.

[0012] In order to facilitate the guidance of smoke, as a refractive light smoke detector of this utility model, a support plate is fixedly connected to the bottom of the inner side of the support base, and an eddy current generator is fixedly connected to the upper surface of the support plate.

[0013] In order to reduce dust adsorption, the surface of the light-sensing mechanism of the refracting light-emitting smoke detector of this utility model is made of self-cleaning material or coating.

[0014] In order to facilitate the cleaning of the light-sensing mechanism, a miniature vibrator is fixedly connected to the middle of the inner top wall of the housing in this utility model of a refractive light-emitting smoke detector.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this utility model, by setting up a first refractive plate, a second refractive plate, and a concave lens, the light emitted by the light-emitting element shines on the outer surface of the first refractive plate, is reflected by the first refractive plate onto the second refractive plate, and then the second refractive plate scatters the light through the concave lens, thereby enhancing the interaction between the light and the smoke particles and preventing interference from external light. When the smoke particles enter the interior of the housing, the light will be refracted, scattered, or reflected, and some of the light will be captured by the light receiver. If the intensity of the received light signal is different from the set threshold, the device will trigger an alarm, thereby improving the detection sensitivity of smoke and reducing the false alarm rate.

[0017] 2. In this utility model, by setting up an eddy current generator and a micro vibrator, the eddy current generator makes the smoke particles in the air enter the detection area more evenly, increases the probability of contact between the smoke particles and light, enhances the detection signal, and reduces the detection error caused by uneven airflow. It is especially suitable for smoke detection in complex environments. The surface of the photosensitive mechanism is made of self-cleaning material or coating to reduce dust accumulation. The micro vibrator is started at regular intervals to remove the dust adsorbed on the surface of the photosensitive mechanism, reducing the impact of dust on detection accuracy, reducing maintenance costs, and improving the long-term reliability of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model;

[0019] Figure 2 This is a bottom view of the structure of an embodiment of the present utility model;

[0020] Figure 3 This is a cross-sectional planar structural diagram of an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the shell according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the installation mechanism structure according to an embodiment of the present utility model.

[0023] In the diagram: 1. Housing; 2. Mounting mechanism; 201. Connecting plate; 202. Card holder; 203. Mounting plate; 204. Mounting hole; 205. Spring; 206. Limiting block; 207. Limiting groove; 3. Drainage mechanism; 301. First through groove; 302. Second through groove; 303. Support plate; 304. Eddy current generator; 4. Light sensing mechanism; 401. Light-emitting element; 402. Support base; 403. First refractive plate; 404. Second refractive plate; 405. Concave lens; 406. Cover; 407. Light receiver; 5. Miniature vibrator. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] like Figure 1-5As shown, a refractive light-emitting smoke detector includes a housing 1. A mounting mechanism 2 is provided on the upper surface of the housing 1. A flow-guiding mechanism 3 is provided in the middle of the inner side of the housing 1. A light-sensing mechanism 4 is provided at the edge of the inner side of the housing 1. The light-sensing mechanism 4 includes a light-emitting element 401 fixed to the top of the inner side of the housing 1. A support base 402 is fixedly connected to one side of the inner top wall of the housing 1. A first refractive plate 403 is fixedly connected to the outer surface of the support base 402. A second refractive plate 404 is fixedly connected to the middle of the inner side of the housing 1. A concave lens 405 is fixedly connected to the lower surface of the support base 402. A cover 406 is threadedly connected to the bottom of the inner side of the housing 1. A light receiver 407 is fixedly connected to the middle of the inner bottom wall of the cover 406.

[0027] In practical use, the device is installed by the mounting mechanism 2 through the arrangement of the first refractive plate 403, the second refractive plate 404, and the concave lens 405. External air is guided into the interior of the housing 1 by the airflow guiding mechanism 3. The light-sensing mechanism 4 detects smoke particles in the air. Multiple light-emitting elements 401 are fixed to the top of the inner side of the housing 1. The light-emitting elements 401 typically use high-brightness LEDs. The cover 406 is threaded to the bottom of the inner side of the housing 1, facilitating easy installation and disassembly for convenient removal and inspection of the internal components. The light emitted by the light-emitting elements 401 illuminates the outer surface of the first refractive plate 403. The light is reflected by the first refractive plate 403 onto the second refractive plate 404, and then the second refractive plate 404 scatters the light through the concave lens 405, enhancing the interaction between the light and the smoke particles, preventing interference from external light, and improving detection sensitivity. The light receiver 407 is used to detect refracted or scattered light. When smoke particles enter the interior of the housing 1, the light will be refracted, scattered, or reflected, and some of the light will be captured by the light receiver 407. If the intensity of the received light signal is different from the set threshold, the device will trigger an alarm, improving the detection sensitivity of smoke and reducing the false alarm rate.

[0028] In this embodiment, the mounting mechanism 2 includes a connecting plate 201 fixed to the upper surface of the housing 1, and a card holder 202 is sleeved on the outer surface of the connecting plate 201.

[0029] In practical use, with the setting of the card holder 202, when the housing 1 is installed, the connecting plate 201 is snapped into the inside of the card holder 202, which enhances the stability of the installation and avoids the phenomenon of self-rotation.

[0030] In this embodiment, a mounting plate 203 is fixedly connected to the upper surface of the card holder 202, and a mounting hole 204 is provided at the edge of the upper surface of the mounting plate 203.

[0031] In practical use, the mounting plate 203 is designed with mounting holes 204 and external bolts working together to fix the mounting plate 203 in a designated location.

[0032] In this embodiment, springs 205 are fixedly connected to both sides of the inner side of the connecting plate 201, and a limit block 206 is fixedly connected to one end of the spring 205. Limit grooves 207 are opened on both sides of the outer surface of the card seat 202.

[0033] In practical use, with the setting of limit block 206 and limit groove 207, after the connecting plate 201 is connected to the card seat 202, under the action of spring 205, limit block 206 is engaged inside limit groove 207 to install housing 1, which improves the convenience of disassembly and assembly and makes it easier for users to maintain and replace according to actual needs.

[0034] In this embodiment, the drainage mechanism 3 includes a first through groove 301 formed on the lower surface of the housing 1, and a second through groove 302 formed at the bottom of the outer surface of the housing 1.

[0035] In practical use, the first through groove 301 and the second through groove 302 are respectively opened on the bottom of the lower surface and the outer surface of the housing 1, so that the smoke can better enter the interior of the housing 1 and be more evenly dispersed.

[0036] In this embodiment, a support plate 303 is fixedly connected to the bottom of the inner side of the support base 402, and an eddy current generator 304 is fixedly connected to the upper surface of the support plate 303.

[0037] In practical use, the eddy current generator 304 is supported by the support plate 303, which makes the smoke particles in the air enter the detection area more evenly, increases the probability of contact between smoke particles and light, enhances the detection signal, and reduces the detection error caused by uneven airflow. It is especially suitable for smoke detection in complex environments.

[0038] In this embodiment, the surface of the light-sensing mechanism 4 is made of a self-cleaning material or coating.

[0039] In practical use, the light-sensing mechanism 4 is designed with a self-cleaning material or coating on its surface, which can reduce dust accumulation and effectively reduce the impact of dust pollution on the monitoring of the light-sensing mechanism 4.

[0040] In this embodiment, a miniature vibrator 5 is fixedly connected to the middle of the inner top wall of the housing 1.

[0041] In practical use, by setting the micro vibrator 5, the micro vibrator 5 is started at regular intervals, which can remove the dust adsorbed on the surface of the photosensitive mechanism 4 inside the housing 1, so that the dust can be discharged to the outside from the first through groove 301, reducing the impact of dust on detection accuracy, reducing maintenance costs, and improving the long-term reliability of the device.

[0042] Working principle: In use, the device is installed through the installation mechanism 2. When the eddy current generator 304 is started, external air is introduced into the housing 1 through the first channel 301 and the second channel 302. The light emitted by the light-emitting element 401 shines on the outer surface of the first refractive plate 403. The light is reflected by the first refractive plate 403 onto the second refractive plate 404. Then, the second refractive plate 404 scatters the light through the concave lens 405, enhancing the interaction between the light and the smoke particles and preventing interference from external light. The light receiver 407 is used to detect refracted or scattered light. When smoke particles enter the housing 1, the light will be refracted, scattered, or reflected. Some of the light will be captured by the light receiver 407. If the intensity of the received light signal is different from the set threshold, the device will trigger an alarm. The surface of the light sensing mechanism 4 is made of self-cleaning material or coating to reduce dust accumulation. The micro vibrator 5 is started at regular intervals to remove the dust adsorbed on the surface of the light sensing mechanism 4, reducing the impact of dust on the detection accuracy.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A refractive luminescent smoke detector, comprising a housing (1), characterized in that: The upper surface of the housing (1) is provided with an installation mechanism (2), the middle of the inner side of the housing (1) is provided with a drainage mechanism (3), and the edge of the inner side of the housing (1) is provided with a light-sensing mechanism (4). The light-sensing mechanism (4) includes a light-emitting element (401) fixed to the top of the inner side of the housing (1), a support base (402) is fixedly connected to one side of the inner top wall of the housing (1), a first refractive plate (403) is fixedly connected to the outer surface of the support base (402), a second refractive plate (404) is fixedly connected to the middle of the inner side of the housing (1), a concave lens (405) is fixedly connected to the lower surface of the support base (402), a cover (406) is threadedly connected to the bottom of the inner side of the housing (1), and a light receiver (407) is fixedly connected to the middle of the inner bottom wall of the cover (406).

2. The refractive luminescent smoke detector according to claim 1, characterized in that: The mounting mechanism (2) includes a connecting plate (201) fixed to the upper surface of the housing (1), and a card holder (202) is sleeved on the outer surface of the connecting plate (201).

3. The refractive luminescent smoke detector according to claim 2, characterized in that: The upper surface of the card holder (202) is fixedly connected to the mounting plate (203), and the edge of the upper surface of the mounting plate (203) is provided with mounting holes (204).

4. The refractive luminescent smoke detector according to claim 2, characterized in that: Springs (205) are fixedly connected to both sides of the inner side of the connecting plate (201), and a limit block (206) is fixedly connected to one end of the spring (205). Limit grooves (207) are opened on both sides of the outer surface of the card holder (202).

5. The refractive luminescent smoke detector according to claim 1, characterized in that: The drainage mechanism (3) includes a first through groove (301) on the lower surface of the housing (1) and a second through groove (302) on the bottom of the outer surface of the housing (1).

6. The refractive luminescent smoke detector according to claim 1, characterized in that: A support plate (303) is fixedly connected to the bottom of the inner side of the support base (402), and an eddy current generator (304) is fixedly connected to the upper surface of the support plate (303).

7. The refractive luminescent smoke detector according to claim 1, characterized in that: The surface of the light-sensing mechanism (4) is made of self-cleaning material or coating.

8. The refractive luminescent smoke detector according to claim 1, characterized in that: A micro vibrator (5) is fixedly connected to the middle of the inner top wall of the housing (1).

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