Pyrolysis particle sensor

Abstract

The utility model discloses a pyrolysis particle sensor which comprises a shell, a first detection cavity is formed in one side of the interior of the shell, an installation cavity is formed in the other side of the interior of the shell, a second detection cavity is formed in one side of the interior of the shell, and a temperature and humidity detector is fixedly installed on one side of the bottom end of the inner wall of the first detection cavity. A compound detector is fixedly mounted in the middle of the bottom end of the inner wall of the first detection cavity, a laser is fixedly mounted on one side of the bottom end of the inner wall of the second detection cavity, a photoelectric detector is fixedly mounted on the other side of the bottom end of the inner wall of the second detection cavity, a partition plate is fixedly connected to the middle of the inner wall of the mounting cavity, and a fan is fixedly mounted in the middle of the partition plate; according to the pyrolytic particle sensor, the pyrolytic particle sensor comprehensively evaluates possible fire risks through various environmental parameters, can give out early warning in the early stage of a fire or even before open fire occurs, and is better in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of fire protection, in particular to a pyrolysis particle sensor. Background Art

[0002] A fire alarm can sense smoke, flames or other fire signs, issue an alarm and notify relevant personnel, aiming to detect and respond to fire risks in a timely manner.

[0003] However, the existing fire detection methods of fire alarms have the following disadvantages:

[0004] (1) The existing fire detection relies on the detection principle of a smoke sensor, and the smoke sensor needs to be triggered when there is a large amount of smoke after an open fire appears. The triggering time is relatively late. Although it can effectively warn of a fire, it cannot give an early warning.

[0005] (2) The existing fire detection sensors must be installed at a certain angle, and there are relatively large limitations in the structure when designing a fire alarm. Content of the Utility Model

[0006] The purpose of the utility model is to provide a pyrolysis particle sensor to solve the existing problems raised in the above background art.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A pyrolysis particle sensor includes a housing. On one side inside the housing, there is a first detection chamber. On the other side inside the housing, there is an installation chamber. On one side inside the housing, there is a second detection chamber. On one side of the bottom end of the inner wall of the first detection chamber, a temperature and humidity detector is fixedly installed. In the middle of the bottom end of the inner wall of the first detection chamber, a compound detector is fixedly installed. On one side of the bottom end of the inner wall of the second detection chamber, a laser is fixedly installed. On the other side of the bottom end of the inner wall of the second detection chamber, a photoelectric detector is fixedly installed. In the middle of the inner wall of the installation chamber, a partition is fixedly connected. In the middle of the partition, a fan is fixedly installed. At the top of one side of the front of the housing, an air inlet is opened. At the bottom of the other side of the front of the housing, an air outlet is opened.

[0008] When using a pyrolysis particle sensor of this technical solution, the pyrolysis particle sensor comprehensively evaluates the possible fire risk through the parameters of various environments, and can give an early warning even in the early stage of a fire, even before an open fire appears, with better safety.

[0009] As a preferred technical solution of the utility model, the housing includes an upper shell and a lower shell, and the upper shell and the lower shell are fixedly connected by bolts. The upper shell and the lower shell can be disassembled and separated, which is convenient for the maintenance and replacement of the internal structure.

[0010] As a preferred technical solution of the present utility model, a connector interface is fixedly connected to a corner of the top end of the housing. The connector interface serves for electrical connection.

[0011] As a preferred technical solution of the present utility model, a through opening is provided at the top of one side of the inner wall of the installation cavity. The provided through opening is used for air circulation.

[0012] As a preferred technical solution of the present utility model, two ends of the bottom of both sides of the housing are fixedly connected with lugs, and fixing holes are provided in the middle of the lugs. The provided lugs are used for installing the sensor.

[0013] As a preferred technical solution of the present utility model, a screen is fixedly connected to the surface of the air inlet. The provided screen can filter large particle impurities in the air.

[0014] As a preferred technical solution of the present utility model, the temperature and humidity detector, the compound detector and the photoelectric detector are electrically connected to an external upper computer.

[0015] As a preferred technical solution of the present utility model, the input end of the fan is communicated with the top of the installation cavity, and the output end of the fan is communicated with the bottom of the installation cavity. The fan is provided to guide air flow.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. The pyrolysis particle sensor comprehensively evaluates the possible fire risks through the parameters of various environments, and can give an early warning even in the early stage of a fire, even before an open flame appears, with better safety;

[0018] 2. The pyrolysis particle sensor sucks air into the sensor through a fan for detection, and can be installed at different angles, with less structural limitation when designing a fire alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective view of the present utility model;

[0020] Figure 2 is a top cross-sectional view of the present utility model;

[0021] Figure 3 The sensor circuit diagram of the present utility model;

[0022] Figure 4 is the software schematic diagram of the present utility model.

[0023] In the figure: 1. Housing; 101. Upper housing; 102. Lower housing; 2. Air inlet; 3. Temperature and humidity detector; 4. Compound detector; 5. Laser; 6. Photoelectric detector; 7. Fan; 8. Air outlet; 9. Connector interface; 10. Detection chamber one; 11. Detection chamber two; 12. Installation chamber; 13. Partition; 14. Through hole; 15. Lug; 16. Fixing hole; 17. Screen. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-4 , the present invention provides a pyrolysis particle sensor, including a housing 1. One side inside the housing 1 is provided with a detection chamber one 10, the other side inside the housing 1 is provided with an installation chamber 12, and one side inside the housing 1 is provided with a detection chamber two 11. One side of the bottom end of the inner wall of the detection chamber one 10 is fixedly installed with a temperature and humidity detector 3, the middle of the bottom end of the inner wall of the detection chamber one 10 is fixedly installed with a compound detector 4, one side of the bottom end of the inner wall of the detection chamber two 11 is fixedly installed with a laser 5, and the other side of the bottom end of the inner wall of the detection chamber two 11 is fixedly installed with a photoelectric detector 6, which plays a detection role. The middle of the inner wall of the installation chamber 12 is fixedly connected with a partition 13, and the middle of the partition 13 is fixedly installed with a fan 7. The top of one side of the front of the housing 1 is provided with an air inlet 2, and the bottom of the other side of the front of the housing 1 is provided with an air outlet 8 for the entry or discharge of air.

[0026] During use, when the fan 7 rotates, air is drawn into the sensor from the air inlet 2. The air entering the sensor passes through the temperature and humidity detector 3, the compound detector 4, and the photoelectric detector 6 in sequence, so as to detect the temperature and humidity, compound components, and solid particle components in the air. Finally, the air passes through the fan 7 and is discharged from the air outlet 8 of the sensor. After analyzing the content of several components, the sensor compares it with the air in the normal state, and finally outputs the content of pyrolysis particles in the air.

[0027] The housing 1 includes an upper housing 101 and a lower housing 102. The upper housing 101 and the lower housing 102 are fixedly connected by bolts and can be disassembled. Both ends of the bottom of both sides of the housing 1 are fixedly connected with lugs 15. The middle of the lugs 15 is provided with fixing holes 16, which play an installation role. One corner of the top of the housing 1 is fixedly connected with a connector interface 9 for externally connecting an amplifier. The temperature and humidity detector 3, the compound detector 4, and the photoelectric detector 6 are electrically connected to an external upper computer.

[0028] When in use, the sensor is installed in the fire alarm device by using a fastener at the fixing hole 16 of the lug 15. The upper shell 101 and the lower shell 102 of the sensor can be detachably separated, which is convenient for the maintenance and replacement of the internal structure. The provided connector interface 9 plays a role in electrical connection.

[0029] A through hole 14 is opened at the top of one side of the inner wall of the installation cavity 12 for the circulation of air. A screen 17 is fixedly connected to the surface of the air inlet 2 to play a filtering role. The input end of the fan 7 is communicated with the top of the installation cavity 12, and the output end of the fan 7 is communicated with the bottom of the installation cavity 12.

[0030] When in use, after the fan 7 is started, the external air is sucked in from the air inlet 2, passes through the first detection cavity 10 and the second detection cavity 11 in sequence, then enters the installation cavity 12 from the through hole 14, and finally is discharged from the air outlet 8. The provided screen 17 can prevent large particle impurities from entering the sensor and prevent the sensor from being damaged.

[0031] During specific use, for a pyrolysis particle sensor of the present utility model, when the fan 7 rotates, air is drawn into the sensor from the air inlet 2. The air entering the sensor sequentially passes through the temperature and humidity detector 3, the compound detector 4, and the photoelectric detector 6, so as to detect the temperature and humidity, compound components, and solid particle components in the air. Finally, the air passes through the fan 7 and is discharged from the air outlet 8 of the sensor. After analyzing the contents of several components, the sensor compares with the air in the normal state and finally outputs the content of pyrolysis particles in the air. This sensor is mainly applied to the occasions of wire and electrical appliance aging. After the wire gets hot and before an open flame appears, as soon as a small amount of organic substances, namely pyrolysis particles, volatilize, they can be detected and an alarm is issued, thus achieving the purpose of detecting a fire faster, even predicting the fire risk in advance and avoiding the fire. This device mainly detects the concentrated particle size range of pyrolysis particles, that is, particles with an aerodynamic diameter of less than 1.0 μm in the air, namely PM1.0. This device adopts the laser scattering method to detect extremely tiny particles suspended in the air, and optimizes the algorithm for extremely small particles. This device adopts a sensing unit for volatile organic compounds, which can effectively sense the changes in volatile organic compounds in the air, so as to be able to judge the combustion products. This device adds a high-sensitivity temperature and humidity sensing unit, so that the sensor can sense the surrounding environmental changes. Because the particles caused by combustion pass through the air duct of the sensor, it will cause obvious changes in the temperature and humidity inside the sensor, which is significantly different from the normal stable environment. This device adopts a constant-current fan 7 to sample the surrounding environmental air, so as to detect the surrounding environment faster. After the fan 7 sucks the air into the sensor, it sequentially passes through the temperature and humidity unit, the organic matter detection unit, and the optical detection unit, thus generating multiple parameters to judge the current environmental change amount. The sensor filters and amplifies the multiple collected parameters to achieve an electrical circuit signal that can be processed by the MCU. Through the algorithm, multiple data are screened and compared, combined with the parameters of the normal environment, so as to achieve the analysis and processing of abnormal situations and finally output the index of fire warning.

[0032] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pyrolytic particle sensor, comprising a housing (1), characterized in that: A detection chamber 1 (10) is provided on one side of the shell (1), a mounting chamber (12) is provided on the other side of the shell (1), a detection chamber 2 (11) is provided on one side of the shell (1), a temperature and humidity detector (3) is fixedly installed on one side of the bottom end of the inner wall of the detection chamber 1 (10), a compound detector (4) is fixedly installed in the middle of the bottom end of the inner wall of the detection chamber 1 (10), a laser (5) is fixedly installed on one side of the bottom end of the inner wall of the detection chamber 2 (11), a photoelectric detector (6) is fixedly installed on the other side of the bottom end of the inner wall of the detection chamber 2 (11), a partition (13) is fixedly connected to the middle of the inner wall of the mounting chamber (12), and a fan (7) is fixedly installed in the middle of the partition (13), an air inlet (2) is provided at the top of one side of the front face of the shell (1), and an air outlet (8) is provided at the bottom of the other side of the front face of the shell (1).

2. A pyrolysis particle sensor according to claim 1, characterized in that: The housing (1) comprises an upper shell (101) and a lower shell (102), and the upper shell (101) and the lower shell (102) are fixedly connected by bolts.

3. A pyrolysis particle sensor according to claim 1, characterized in that: A corner of the top end of the housing (1) is fixedly connected to a connector interface (9).

4. The pyrolytic particle sensor according to claim 1, characterized in that: A through opening (14) is provided at the top of one side of the inner wall of the installation cavity (12).

5. The pyrolytic particle sensor according to claim 1, characterized in that: Both ends of the bottom of both sides of the shell (1) are fixedly connected with lugs (15), and a fixing hole (16) is opened in the middle of the lugs (15).

6. The pyrolytic particle sensor according to claim 1, characterized in that: A gauze net (17) is fixedly connected to the surface of the air inlet (2).

7. The pyrolytic particle sensor according to claim 1, characterized in that: The temperature and humidity detector (3), the compound detector (4) and the photoelectric detector (6) are electrically connected to an external host computer.

8. The pyrolytic particle sensor according to claim 1, characterized in that: The input end of the fan (7) is in communication with the top of the installation cavity (12), and the output end of the fan (7) is in communication with the bottom of the installation cavity (12).

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