Alarm device

Abstract

The utility model provides an alarm device, and belongs to the technical field of flue gas monitoring. According to the structure of the device, an installation pipe is located on a shell, a plurality of pin columns are arranged at the bottom of an upper cover, the upper cover is arranged on the shell, the pin columns and the installation pipe are installed in an inserted mode, a clamping head and a protruding table are located on the shell and the upper cover respectively, the clamping head is matched with the protruding table, a ring body is arranged on the upper cover, a bottom plate is located in the upper cover, and a PCB is fixedly arranged on the bottom plate. The detection bin is arranged on the PCB, the PCB is provided with an infrared receiver and an infrared light-emitting tube, the infrared receiver and the infrared light-emitting tube are kept in the detection bin, the detection bin comprises a bottom shell and a top shell which are clamped with each other, and a light channel communicated with the infrared light-emitting tube and the infrared receiver is arranged between the bottom shell and the top shell. A reflector is arranged on the wall face of the optical channel, a socket is arranged on the shell, and a contact is arranged on the PCB and connected with the socket. The device is simple in assembling structure, low in cost, convenient to install and maintain and remarkable in technical advantage.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas monitoring technology, specifically an alarm device. Background Technology

[0002] Flue gas monitoring refers to the process of monitoring the concentration and total emissions of gaseous pollutants and particulate matter from air pollution sources. The importance of flue gas monitoring is mainly reflected in the following aspects: Environmental protection: Through flue gas monitoring, emissions from pollution sources can be detected and controlled in a timely manner, reducing the amount of air pollutants emitted and protecting the ecological environment. Public health: Pollutants in flue gas have a significant impact on human health. Monitoring allows us to understand the extent of the pollutants' impact on air quality and take timely measures to protect public health. Industrial production optimization: Flue gas monitoring data can provide important references for industrial production, helping enterprises optimize production processes, reduce energy consumption, and decrease pollutant emissions.

[0003] In existing technologies, smoke monitoring and alarm devices are mainly divided into ionization and photoelectric types. Ionization smoke sensors contain a radioactive source, Americium-241, which generates positive and negative ions by ionizing air. Under normal conditions, the current and voltage of the inner and outer ionization chambers remain stable. When smoke enters the outer ionization chamber, it interferes with the normal movement of charged particles, causing changes in current and voltage and disrupting the balance between the inner and outer ionization chambers. At this point, the wireless transmitter sends an alarm signal to notify the receiving host. Photoelectric smoke sensors contain an optical labyrinth with infrared diodes. When there is no smoke, the infrared receiving diode cannot receive the infrared light emitted by the infrared emitting diode. When smoke enters the optical labyrinth, the smoke refracts and reflects the infrared light, causing the receiving diode to receive the infrared light, thereby triggering the alarm circuit to determine whether the threshold has been exceeded and to issue an alarm. Because photoelectric smoke sensors use a light detection principle, they do not produce ozone and can be used for long-term use or in places with poor air circulation. However, currently, both light-reducing and light-scattering photoelectric smoke sensors have relatively complex structures, high costs, and are inconvenient to install and maintain. Summary of the Invention

[0004] This utility model aims to address the technical deficiencies of existing technologies by providing an alarm device that solves the problems of current photoelectric smoke sensors being complex in structure, high in cost, and inconvenient to install and maintain.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0006] An alarm device includes a housing, a locking head, a mounting tube, a socket, a top cover, a protrusion, a ring, a PCB board, a base plate, a detection chamber, a bottom shell, a top shell, a light channel, a reflector, contacts, an infrared LED, and an infrared receiver. The mounting tube is located on the housing, and the bottom of the top cover has multiple pins. The top cover is mounted on the housing, and the pins are inserted into the mounting tube. The locking head and the protrusion are located on the housing and the top cover, respectively, and the locking head cooperates with the protrusion. A ring is provided on the top cover, and the base plate is located inside the top cover. A PCB board is fixedly mounted on the base plate, and the detection chamber is mounted on the PCB board. An infrared receiver and an infrared LED are provided on the PCB board and are held inside the detection chamber. The detection chamber includes a bottom shell and a top shell that interlock with each other. A light channel connecting the infrared LED and the infrared receiver is provided between the bottom shell and the top shell. A reflector is provided on the wall of the light channel. A socket is provided on the housing, and contacts are provided on the PCB board, with the contacts connected to the socket.

[0007] Preferably, the top cover has a strip-shaped hole.

[0008] Preferably, the testing chamber has an opening, and a fan is fixedly installed at the opening.

[0009] Preferably, a filter is provided in the optical channel.

[0010] Preferably, a first hole and a second hole are provided on both sides of the optical channel, with the infrared light-emitting tube located at the first hole and the infrared receiver located at the second hole.

[0011] Preferably, the bottom shell has a through hole, and the bottom of the top shell has a column, with the through hole and the column being inserted into each other.

[0012] In this invention, the outer shell and top cover form the external structure. The locking head is secured to the protruding platform, and the mounting tube is inserted into the pin to achieve positioning. The socket connects to an external power source to power the PCB board, and the ring body facilitates hanging and placement. The base plate is used to mount the PCB board. The detection chamber includes a bottom shell and a top shell, which form a light channel inside. The sides are maintained by reflectors to maintain reflectivity. The infrared light-emitting tube and infrared receiver on the PCB board are located on both sides of the light channel. The absorption rate is calculated based on the received infrared intensity (the emitted light intensity is known), and then the current flue gas concentration is obtained based on the relationship between flue gas concentration and absorption rate obtained from prior experiments.

[0013] This invention provides an alarm device. The device has a simple assembly structure, low cost, and is easy to install and maintain, exhibiting significant technical advantages. Attached Figure Description

[0014] Figure 1 This is a breakdown diagram of the present invention;

[0015] Figure 2It is a structural diagram of the PCB board, bottom shell, and other parts;

[0016] Figure 3 It is a structural diagram of the upper side of the top shell, bottom shell, and other parts;

[0017] Figure 4 It is a diagram of the lower structure of the top shell, bottom shell, and other parts;

[0018] In the picture:

[0019] Detailed Implementation

[0020] The specific embodiments of this utility model will be described in detail below. To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments. The approximate language used in the following embodiments can be used for quantitative descriptions, indicating that a certain degree of variation in quantity is permissible without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art to which this utility model pertains.

[0021] Example 1

[0022] An alarm device, see Figures 1-4 The system includes a housing 1, a clip 2, a mounting tube 3, a socket 4, a top cover 5, a protrusion 7, a ring 8, a PCB board 9, a base plate 10, a detection chamber 11, a bottom shell 12, a top shell 13, a light channel 14, a reflector 15, a contact 22, an infrared LED 23, and an infrared receiver 24. The mounting tube 3 is located on the housing 1. The top cover 5 has multiple pins at its bottom and is mounted on the housing 1. The pins are inserted into the mounting tube 3. The clip 2 and the protrusion 7 are located on the housing 1 and the top cover 5, respectively. The clip 2 cooperates with the protrusion 7. The top cover 5 has a ring 8. The base plate 10 is located inside the top cover 5. A PCB board 9 is fixedly mounted on the base plate 10. The detection chamber 11 is mounted on the PCB board 9. An infrared receiver 24 and an infrared light-emitting tube 23 are mounted on the PCB board 9. The infrared receiver 24 and the infrared light-emitting tube 23 are kept inside the detection chamber 11. The detection chamber 11 includes a bottom shell 12 and a top shell 13 that are interlocked. A light channel 14 connecting the infrared light-emitting tube 23 and the infrared receiver 24 is provided between the bottom shell 12 and the top shell 13. A reflector 15 is provided on the wall of the light channel 14. An insertion port 4 is provided on the outer shell 1. A contact 22 is provided on the PCB board 9. The contact 22 is connected to the insertion port 4.

[0023] The outer shell 1 and the upper cover 5 form the external structure. The clip 2 is secured to the protrusion 7, and the mounting tube 3 is inserted into the pin to achieve positioning. The socket 4 connects to an external power source to power the PCB board 9, and the ring body 8 facilitates hanging and placement. The base plate 10 is used to mount the PCB board 9. The detection chamber 11 includes a bottom shell 12 and a top shell 13, which forms a light channel 14 inside. The reflectivity is maintained on the side by a reflector 15. The infrared light-emitting tube 23 and the infrared receiver 24 on the PCB board 7 are located on both sides of the light channel 14. The absorption rate is calculated based on the received infrared intensity (the emitted light intensity is known), and then the current flue gas concentration is obtained based on the relationship between flue gas concentration and absorption rate obtained from previous experiments.

[0024] Example 2

[0025] An alarm device, see Figures 1-4 The system includes a housing 1, a clip 2, a mounting tube 3, a socket 4, a top cover 5, a protrusion 7, a ring 8, a PCB board 9, a base plate 10, a detection chamber 11, a bottom shell 12, a top shell 13, a light channel 14, a reflector 15, a contact 22, an infrared LED 23, and an infrared receiver 24. The mounting tube 3 is located on the housing 1. The top cover 5 has multiple pins at its bottom and is mounted on the housing 1. The pins are inserted into the mounting tube 3. The clip 2 and the protrusion 7 are located on the housing 1 and the top cover 5, respectively. The clip 2 cooperates with the protrusion 7. The top cover 5 has a ring 8. The base plate 10 is located inside the top cover 5. A PCB board 9 is fixedly mounted on the base plate 10. A detection chamber 11 is mounted on the PCB board 9. An infrared receiver 24 and an infrared LED 23 are mounted on the PCB board 9 and are held inside the detection chamber 11. The detection chamber 11 includes a bottom shell 12 and a top shell 13 that interlock. A light channel 14 connecting the infrared LED 23 and the infrared receiver 24 is provided between the bottom shell 12 and the top shell 13. A reflector 15 is provided on the wall of the light channel 14. A socket 4 is provided on the outer shell 1, and a contact 22 is provided on the PCB board 9, connecting the contact 22 to the socket 4. A strip-shaped hole 6 is provided on the top cover 5. An opening 19 is provided in the detection chamber 11, and a fan 21 is fixedly mounted at the opening 19. A filter 25 is provided in the light channel 14. A first hole 16 and a second hole 17 are provided on both sides of the optical channel 14. The infrared light-emitting tube 23 is located at the first hole 16, and the infrared receiver 24 is located at the second hole 17. A through hole 18 is provided on the bottom shell 12, and a column 20 is provided at the bottom of the top shell 13. The through hole 18 is inserted into the column 20.

[0026] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the scope of this utility model application should be included within the protection scope of this utility model.

Claims

1. An alarm device, characterized in that Includes a housing (1), a clip (2), a mounting tube (3), a socket (4), a top cover (5), a protrusion (7), a ring (8), a PCB board (9), a base plate (10), a detection chamber (11), a bottom shell (12), a top shell (13), a light channel (14), a reflector (15), a contact (22), an infrared LED (23), and an infrared receiver (24); the mounting tube (3) is located on the housing (1), and there are multiple pins at the bottom of the top cover (5). The top cover (5) is set on the housing (1), and the pins are inserted into the mounting tube (3). The clip (2) and the protrusion (7) are located on the housing (1) and the top cover (5) respectively. The clip (2) cooperates with the protrusion (7). A ring (8) is provided on the top cover (5), and the base plate (10) is located on the top cover (9). 5) Within the base plate (10), a PCB board (9) is fixedly installed on the base plate (10). The detection chamber (11) is installed on the PCB board (9). An infrared receiver (24) and an infrared light-emitting tube (23) are provided on the PCB board (9). The infrared receiver (24) and the infrared light-emitting tube (23) are kept inside the detection chamber (11). The detection chamber (11) includes a bottom shell (12) and a top shell (13) that are interlocked. A light channel (14) connecting the infrared light-emitting tube (23) and the infrared receiver (24) is provided between the bottom shell (12) and the top shell (13). A reflector (15) is provided on the wall of the light channel (14). A socket (4) is provided on the outer shell (1). A contact (22) is provided on the PCB board (9). The contact (22) is connected to the socket (4).

2. The alarm device of claim 1, wherein A strip hole (6) is provided on the top cover (5).

3. The alarm device of claim 1, wherein The detection chamber (11) has an opening (19), and a fan (21) is fixedly installed at the opening (19).

4. The alarm device of claim 1, wherein A filter (25) is provided in the optical channel (14).

5. The alarm device of claim 1, wherein, A first hole (16) and a second hole (17) are provided on both sides of the optical channel (14). The infrared light-emitting tube (23) is located in the first hole (16) and the infrared receiver (24) is located in the second hole (17).

6. The alarm device of claim 1, wherein The bottom shell (12) has a through hole (18), and the bottom of the top shell (13) has a column (20), with the through hole (18) and the column (20) inserted into each other.

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