Vehicle smoke detector

Abstract

The utility model provides a vehicle smoke detector, and belongs to the technical field of vehicle safety monitoring. The partition plate is arranged in the shell with the mounting cavity with the bottom opening, the mounting cavity is divided into the air inlet cavity and the air outlet cavity, the air outlets communicated with the air outlet cavity are formed in the upper portion of the shell, the bottom cover with the air inlets is arranged in the bottom opening, and the air outlets are communicated with the air inlet cavity. A smoke sensing probe is further arranged in the installation cavity and located at the position of the partition plate, the air inlet cavity and the air outlet cavity are communicated through the smoke sensing probe, the height difference can exist between the air outlet and the air inlet in the height direction, the pressure difference can be generated, and natural flowing of an air sample is achieved. It is ensured that an air sample in the air inlet cavity can enter the exhaust cavity to be exhausted only after completely passing through the smoke sensing probe. Besides, the mounting cavity is subdivided through the partition plate, so that the concentration of an air sample can be quickly gathered in the air inlet cavity, the response time of the smoke sensing probe is shorter, and the monitoring efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle safety monitoring, in particular to a vehicle smoke detector. Background Art

[0002] With the development of technology and the improvement of people's living standards, there are more and more different types of vehicles, such as rail trains, passenger cars and special vehicles (sewage suction trucks). In order to improve vehicle safety, it is necessary for the industry to install vehicle smoke detectors on vehicles.

[0003] At present, the vehicle smoke detectors available on the market, such as the aspirating detector disclosed in patent CN217955226U, include a shell, inside which are a filter chamber, a monitoring chamber and an exhaust chamber which are connected in sequence, the filter chamber is connected to the air inlet, the exhaust chamber is connected to the exhaust port, a smoking pipe connects the air inlet pipe to the engine compartment, filter cotton is arranged in the filter chamber, the smoke detector is arranged in the monitoring chamber, and the fan is arranged in the exhaust chamber. When in use, the fan is started to form a negative pressure in the filter chamber and the monitoring chamber, and the air sample in the engine compartment is drawn to the monitoring chamber, the smoke concentration is detected by the smoke detector, the condition of the detected environment is obtained in time, and the safety is improved. Although the above structure can meet the needs of vehicle smoke detection, since the filter chamber, monitoring chamber and exhaust chamber are at the same horizontal height, a fan is needed to form a pressure difference between the air inlet and the exhaust port to achieve the suction of air samples. This increases energy consumption and increases the cost of use. In addition, a fan with safety risks itself needs to be installed in the shell, which may cause false alarms due to accidents with the fan itself. Moreover, the fan cannot continue to work if it is damaged. The use is greatly restricted, which is not conducive to the promotion and use of vehicle smoke detectors. Summary of the invention

[0004] In view of the above-mentioned problems existing in the prior art, the present invention aims to provide a vehicle smoke detector, which is provided with an inverted shell, the shell is an installation cavity with a bottom opening, the upper part of the shell is provided with an exhaust port connected to the installation cavity, and a bottom cover with an air inlet is installed in the bottom opening of the shell, so that there is a height difference between the air inlet and the exhaust port in the vertical direction, thereby forming a pressure difference, which meets the natural flow requirements of the air sample, and there is no need to install a suction structure separately, which can reduce energy consumption and improve safety. In addition, a smoke probe is installed on the top wall of the installation cavity, and a partition is also provided in the installation cavity. The partition installation cavity is divided into an air inlet cavity and an exhaust cavity, and the smoke probe is placed at the partition, so that the air inlet cavity and the exhaust cavity are connected through the smoke probe, not only the installation cavity is refined by the partition, but also the concentration of the air sample in the air inlet cavity can be quickly gathered, thereby improving the response time of the smoke probe, and improving the monitoring efficiency and the accuracy of the results.

[0005] The specific technical solutions are as follows:

[0006] A vehicle smoke detector having the following characteristics:

[0007] The housing has a mounting cavity with a bottom opening, and a plurality of exhaust ports communicating with the mounting cavity are provided on the upper portion of the housing;

[0008] A bottom cover is installed in the bottom opening and is provided with a plurality of air inlets;

[0009] A smoke detector is installed in the installation cavity and fixed on the top wall of the installation cavity;

[0010] A partition is arranged in the installation cavity and divides the installation cavity into an air intake cavity and an exhaust cavity, and the air intake cavity and the exhaust cavity are respectively connected with the air intake port and the exhaust port, and the smoke sensor is located at the partition, and an avoidance gap is opened on the partition, and the contour shape of the avoidance gap is consistent with the outer contour shape of a cross section of the smoke sensor and abuts against each other, and the air intake cavity and the exhaust cavity are connected through the smoke sensor.

[0011] The above-mentioned vehicle smoke detector further includes a filter assembly, which is arranged in the installation cavity and one side of the filter assembly is tightly attached to the bottom cover, and the filter assembly covers all air inlets.

[0012] The above-mentioned vehicle smoke detector, wherein the filter assembly includes a mesh cover and filter cotton, the mesh cover has a accommodating cavity with an opening, and a plurality of ventilation holes connected to the accommodating cavity are opened on the mesh cover, the filter cotton is installed in the accommodating cavity, and when installed, the opening of the mesh cover is arranged toward the bottom cover and abuts against the bottom cover.

[0013] In the above-mentioned vehicle smoke detector, sealing strips are arranged between the partition and the inner wall of the installation cavity and between the avoidance gap and the smoke sensor probe.

[0014] The above-mentioned vehicle smoke detector, wherein the partition includes a vertical plate and a horizontal plate, the lower end of the vertical plate is connected to one side of the horizontal plate and is an integrated structure, and when the partition is installed in the installation cavity, the vertical plate separates the installation cavity along the vertical direction, and the avoidance gap is located on the vertical plate. At the same time, the horizontal plate is located at the bottom opening of the installation cavity and corresponds to one side of the exhaust cavity formed, and at the same time, a gap is set between the horizontal plate and the filter assembly.

[0015] In the above-mentioned vehicle smoke detector, a plurality of protruding support plates are arranged on the inner wall of the exhaust cavity, a plurality of support screws are threadedly mounted on the support plates, and one end of the support screw passes through the partition and extends toward one side of the filter assembly.

[0016] In the above-mentioned vehicle smoke detector, an exhaust pipe is installed on the shell and on each exhaust port, and each exhaust pipe is bent downward.

[0017] In the above-mentioned vehicle smoke detector, when the bottom cover is installed in the bottom opening, the bottom surface height of the bottom cover is higher than the edge height of the bottom opening of the shell.

[0018] In the above-mentioned vehicle smoke detector, a wiring hole connected to the installation cavity is also installed on the shell, a waterproof connector is installed on the wiring hole, and the wire of the smoke sensor probe passes through the waterproof connector.

[0019] The above-mentioned vehicle smoke detector, wherein two mounting plates are symmetrically arranged on the side wall of the upper part of the shell, each mounting plate includes a connecting plate and a fixing plate which are perpendicular to each other, and the connecting plate is welded to the side wall of the shell, the fixing plate is arranged parallel to the top wall of the shell, and a plurality of fixing holes are opened on the fixing plate.

[0020] The positive effects of the above technical solution are:

[0021] The above-mentioned vehicle smoke detector is provided with a shell having an installation cavity with a bottom opening. When it is installed inverted, an exhaust port connected to the installation cavity is opened on the upper part of the shell, and a bottom cover with an air inlet is provided in the bottom opening, and the smoke sensor probe is arranged in the installation cavity, so that there is a height difference between the exhaust port and the air inlet in the vertical direction, and the natural flow of air samples is achieved by the generated pressure difference, and there is no need to install a suction structure separately, thereby reducing energy consumption and improving safety; and, a partition is provided in the installation cavity to separate the installation cavity into an air inlet cavity and an exhaust cavity, and the smoke sensor probe is placed at the partition, so that the air inlet cavity and the exhaust cavity are connected through the smoke sensor probe, thereby ensuring that the air samples in the air inlet cavity will pass through the smoke sensor probe, thereby improving the detection accuracy, and at the same time, the installation cavity can be refined by the partition, so that the concentration of the air sample in the air inlet cavity can be quickly gathered, thereby making the reaction time of the smoke sensor probe shorter and the monitoring efficiency higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of an embodiment of a vehicle smoke detector of the utility model;

[0023] Figure 2 This is a structural diagram of a preferred embodiment of the utility model after removing the bottom cover and the filter assembly;

[0024] Figure 3 for Figure 2 The structural diagram of the middle structure after removing the partition;

[0025] Figure 4 This is a structural diagram of a filter assembly according to a preferred embodiment of the present utility model.

[0026] In the accompanying drawings: 1. Shell; 11. Installation cavity; 12. Exhaust port; 13. Wiring hole; 111. Air inlet cavity; 121. Exhaust pipe; 2. Bottom cover; 21. Air inlet; 3. Smoke detector; 4. Partition; 41. Vertical plate; 42. Horizontal plate; 411. Avoidance gap; 5. Filter assembly; 51. Mesh cover; 52. Filter cotton; 511. Vent; 6. Sealing strip; 7. Support plate; 71. Support screw; 8. Waterproof joint; 9. Installation plate; 91. Connecting plate; 92. Fixing plate. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments are combined with the attached Figure 1 Appendix 4 specifically describes the technical solution provided by the present invention, but the following content is not intended to limit the present invention.

[0028] Figure 1 It is a structural diagram of an embodiment of a vehicle smoke detector of the utility model; Figure 2 This is a structural diagram of a preferred embodiment of the utility model after removing the bottom cover and the filter assembly; Figure 3 for Figure 2 The structure diagram after removing the partition. Figure 1 , Figure 2 as well as Figure 3 As shown, the vehicle smoke detector provided in this embodiment includes: a housing 1, a bottom cover 2, a smoke sensor 3 and a partition 4.

[0029] Specifically, the housing 1 includes an installation cavity 11 with a bottom opening, and the installation cavity 11 provides installation and working space for subsequent smoke probes 3 and partitions 4 and other structural parts. At the same time, a plurality of exhaust ports 12 connected to the installation cavity 11 are provided at the upper part of the housing 1. Preferably, an exhaust port 12 is provided at one side of the upper part of the housing 1, so that the air sample entering the installation cavity 11 and detected by the smoke probe 3 can be discharged through the exhaust port 12. In addition, the problem that the exhaust port 12 is set at the top of the housing 1 and affects the subsequent installation of the housing 1 is avoided. At the same time, the exhaust port 12 is located at a higher position on the housing 1, which provides conditions for the subsequent pressure difference between the air inlet 21 at a lower position.

[0030] Specifically, the bottom cover 2 is installed in the bottom opening, that is, the bottom opening of the installation cavity 11 of the shell 1 is sealed by the bottom cover 2, so that the installation cavity 11 can form an approximately closed space, which provides conditions for the subsequent detection of the smoke sensor 3 not to be affected by other external factors. In addition, a plurality of air inlets 21 are also provided on the bottom cover 2. At this time, the air inlet 21 can be located at the bottom of the shell 1, so that when the top of the shell 1 is fixed on the relevant carrier, that is, when the shell 1 is installed upside down, the air inlet 21 is located below the exhaust port 12 in the height direction, and there is a height difference between the two, so that a pressure difference is formed between the air inlet 21 and the exhaust port 12, so that the air sample can automatically enter the installation cavity 11 from the air inlet 21, and then be discharged through the exhaust port 12, which is convenient for the detection of the smoke sensor 3 installed in the installation cavity 11.

[0031] Specifically, the smoke probe 3 is installed in the installation cavity 11. At this time, the smoke probe 3 is fixed on the top wall of the installation cavity 11, thereby realizing the fixed installation of the smoke probe 3 in the installation cavity 11. At the same time, the air sample entering the installation cavity 11 can be detected by the smoke probe 3, thereby meeting the vehicle smoke detection needs.

[0032] Specifically, the partition 4 is arranged in the installation cavity 11, and the installation cavity 11 is divided into an air inlet cavity 111 and an exhaust cavity by the partition 4. At the same time, the air inlet cavity 111 and the exhaust cavity are respectively connected to the air inlet port 21 and the exhaust port 12, so that the air sample entering from the air inlet port 21 can first be gathered in the air inlet cavity 111, and the air sample that has been tested subsequently will enter the exhaust cavity and then be discharged from the exhaust port 12. In addition, the smoke probe 3 is arranged at the partition 4. At this time, an avoidance gap 411 is opened on the partition 4. In addition, the contour shape of the avoidance gap 411 is set to be consistent with the outer contour shape of the longitudinal section of the smoke probe 3, so that when the partition 4 is subsequently installed in the installation cavity 11, the edge of the avoidance gap 411 can abut against the outer contour of the smoke probe 3, so that the air intake cavity 111 and the exhaust cavity separated by the partition 4 can be connected through the smoke probe 3, so that the air sample in the air intake cavity 111 must completely pass through the smoke probe 3 before entering the exhaust cavity, thereby ensuring the accuracy of the detection.

[0033] More specifically, a filter assembly 5 is also provided in the installation cavity 11. At this time, one side of the filter assembly 5 is pressed tightly against the bottom cover 2 and all the air inlets 21 on the bottom cover 2 are covered by the filter assembly 5, so that all air samples entering the air inlet cavity 111 from the air inlet 21 need to be filtered by the filter assembly 5, thereby preventing dust and other impurities in the air from entering the air inlet cavity 111 and interfering with the detection of the smoke sensor 3, thereby ensuring the reliability of the detection and improving the detection accuracy.

[0034] Figure 4 This is a structural diagram of a filter assembly of a preferred embodiment of the utility model. Figure 1 and Figure 4 As shown, the filter assembly 5 for filtering the air sample further includes a mesh cover 51 and filter cotton 52. At this time, the mesh cover 51 includes a receiving cavity with an opening, so that the mesh cover 51 itself has a space to install the filter cotton 52. In addition, a plurality of vents 511 connected to the receiving cavity are provided on the mesh cover 51, and the filter cotton 52 is installed in the receiving cavity, which provides space for the installation of the filter cotton 52. In addition, when the filter assembly 5 is subsequently installed in the installation cavity 11, the opening of the mesh cover 51 is arranged toward the bottom cover 2 and abuts against the bottom cover 2, ensuring that the mesh cover 51 and the bottom cover 2 can clamp the filter cotton 52, thereby improving the installation stability of the filter cotton 52.

[0035] More specifically, sealing strips 6 are provided between the partition 4 and the inner wall of the installation cavity 11 and between the edge of the avoidance notch 411 thereon and the outer wall of the smoke probe 3. That is, the sealing strips 6 are used to seal the installation gaps between the partition 4 and the inner wall of the installation cavity 11 and between the partition 4 and the smoke probe 3, thereby ensuring the relative independence of the air intake cavity 111 and the exhaust cavity, thereby avoiding the problem of inaccurate detection results caused by leakage of air samples.

[0036] More specifically, the partition 4 used to separate the installation cavity 11 includes a vertical plate 41 and a horizontal plate 42. At this time, the lower end of the vertical plate 41 is connected to one side of the horizontal plate 42, and the vertical plate 41 and the horizontal plate 42 are an integrated structure, so that the partition 4 is a structure with an "L"-shaped cross section. When the partition 4 is subsequently installed in the installation cavity 11, the vertical plate 41 can separate the installation cavity 11 along the vertical direction. At the same time, the avoidance notch 411 is set on the vertical plate 41, so that the connection between the air inlet cavity 111 and the exhaust cavity is only the avoidance notch 411 on the vertical plate 41, thereby improving the sealing reliability. At the same time, the horizontal plate 42 is arranged at the bottom opening of the installation cavity 11 and on one side of the corresponding exhaust cavity, that is, the exhaust cavity separated by the horizontal plate 42 is sealed at one end close to the bottom opening, so that the exhaust cavity can become a relatively independent space. It is worth noting that a gap should be provided between the horizontal plate 42 and the filter assembly 5, so that there is space between the horizontal plate 42 and the filter assembly 5 for the air sample to flow, that is, the entire bottom cover 2 and the entire filter assembly 5 can be used as the air intake channel of the air intake cavity 111, thereby ensuring the air intake volume to the greatest extent, providing sufficient air samples, and facilitating the accumulation of air sample concentration in the air intake cavity 111.

[0037] More specifically, a plurality of protruding support plates 7 are provided on the inner wall of the exhaust chamber. At this time, a plurality of support screws 71 are threadedly installed on the support plate 7. By turning the support screws 71, the position of the support screws 71 on the support plate 7 can be adjusted. In addition, one end of the support screw 71 passes through the partition 4 and extends toward the side of the filter assembly 5, that is, the support screw 71 can not only fix the partition 4 in the installation cavity 11, ensuring the stable installation of the partition 4, but also support the mesh cover 51 of the filter assembly 5 through the end of the support screw 71, avoiding the problem that the mesh cover 51 is tightly attached to the partition 4 due to the pressure of the bottom cover 2, ensuring that the air sample can flow in the gap between the filter assembly 5 and the partition 4, thereby maximizing the area of ​​the air inlet 21.

[0038] More specifically, an exhaust pipe 121 is installed on the housing 1 and on each exhaust port 12. At this time, after the top wall of the housing 1 is installed on the corresponding carrier, each exhaust pipe 121 is bent downward, and the edge of the exhaust port 12 is transformed into a vertical downward state through the exhaust pipe 121, thereby preventing external rainwater from entering the installation cavity 11 through the exhaust port 12 to affect detection or cause structural damage, and the structural design is more reasonable.

[0039] More specifically, during the subsequent installation process, and when the bottom cover 2 is installed in the bottom opening, the bottom surface height of the bottom cover 2 is higher than the edge height of the bottom opening of the shell 1, that is, the edge of the bottom opening of the shell 1 can exceed the bottom surface of the bottom cover 2 and continue to be arranged downward, so that the edge of the bottom opening of the shell 1 can form a drip edge, thereby preventing the problem of external rainwater and the like from flowing back from the bottom cover 2 into the installation cavity 11, and providing higher safety assurance.

[0040] More specifically, a wiring hole 13 connected to the installation cavity 11 is also installed on the shell 1. At this time, a waterproof connector 8 is also installed on the wiring hole 13. The wires of the smoke sensor 3 can be passed through the waterproof connector 8 to facilitate wiring. It can also prevent external rainwater from entering the installation cavity 11, and the structural design is more reasonable.

[0041] More specifically, two mounting plates 9 are symmetrically arranged on the side wall of the upper part of the shell 1. At this time, each mounting plate 9 includes a connecting plate 91 and a fixing plate 92 which are perpendicular to each other. Preferably, the fixing plate 92 and the connecting plate 91 of the same mounting plate 9 are bent into an integrated structure, which has higher structural strength and stronger bearing capacity. In addition, the connecting plate 91 is welded to the side wall of the shell 1 to achieve a fixed connection between the mounting plate 9 and the shell 1. At the same time, the fixing plate 92 is arranged parallel to the top wall of the shell 1 to avoid the problem that the fixing plate 92 protrudes from the top wall of the shell 1 and the subsequent shell 1 cannot be fully fitted when it is installed on the corresponding carrier, thereby ensuring the stability of the installation. In addition, a number of fixing holes are opened on the fixing plate 92, which can be connected to the corresponding carrier after passing through the fixing holes by threaded fasteners such as bolts, so as to achieve stable installation of the shell 1 on the corresponding carrier.

[0042] The vehicle smoke detector provided in this embodiment includes a housing 1, a bottom cover 2, a smoke probe 3 and a partition 4; the partition 4 is provided in the housing 1 with the installation cavity 11 having the bottom opening, so that the installation cavity 11 is divided into an air intake cavity 111 and an exhaust cavity, and a plurality of exhaust ports 12 connected to the exhaust cavity are provided on the upper part of the housing 1, and a bottom cover 2 with a plurality of air intake ports 21 is provided in the bottom opening, and a smoke probe 3 is also provided in the installation cavity 11 and is located at the partition 4, and the air intake cavity 111 and the exhaust cavity are connected through the smoke probe 3, so that the exhaust port 12 and the air intake port 21 can have a height difference in the height direction, and a pressure difference can be generated to realize the natural flow of the air sample, and at the same time, it is ensured that the air sample in the air intake cavity 111 needs to completely pass through the smoke probe 3 before entering the exhaust cavity and being discharged. In addition, the installation cavity 11 is subdivided by the partition 4, so that the concentration of the air sample can be quickly gathered in the air intake cavity 111, so that the reaction time of the smoke probe 3 is shorter, and the monitoring efficiency is improved.

[0043] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle smoke detector, characterized in that: include: A housing, wherein the housing has a mounting cavity with a bottom opening, and a plurality of exhaust ports communicating with the mounting cavity are formed on an upper portion of the housing; A bottom cover, the bottom cover is installed in the bottom opening, and a plurality of air inlets are provided on the bottom cover; A smoke detector, the smoke detector is installed in the installation cavity and fixed on the top wall of the installation cavity; A partition is provided in the installation cavity and divides the installation cavity into an air intake cavity and an exhaust cavity, and the air intake cavity and the exhaust cavity are respectively connected with the air intake port and the exhaust port, and the smoke probe is located at the partition, an avoidance gap is opened on the partition, and the contour shape of the avoidance gap is consistent with the outer contour shape of a cross-section of the smoke probe and abuts against each other, and the air intake cavity and the exhaust cavity are connected through the smoke probe.

2. The vehicle smoke detector according to claim 1, characterized in that: It also includes a filter assembly, which is arranged in the installation cavity and has one side tightly attached to the bottom cover, and the filter assembly covers all the air inlets.

3. The vehicle smoke detector according to claim 2, characterized in that: The filter assembly includes a mesh cover and filter cotton, the mesh cover has a accommodating cavity with an opening, and a plurality of ventilation holes connected to the accommodating cavity are opened on the mesh cover, the filter cotton is installed in the accommodating cavity, and when installed, the opening of the mesh cover is arranged toward the bottom cover and abuts against the bottom cover.

4. The vehicle smoke detector according to claim 1, characterized in that: Sealing strips are arranged between the partition and the inner wall of the installation cavity and between the avoidance gap and the smoke sensor probe.

5. The vehicle smoke detector according to claim 2, characterized in that: The partition includes a vertical plate and a horizontal plate. The lower end of the vertical plate is connected to one side of the horizontal plate and is an integrated structure. When the partition is installed in the installation cavity, the vertical plate separates the installation cavity along the vertical direction. The avoidance gap is located on the vertical plate. At the same time, the horizontal plate is located on one side of the bottom opening of the installation cavity and the corresponding exhaust cavity. At the same time, a gap is set between the horizontal plate and the filter assembly.

6. The vehicle smoke detector according to claim 2, characterized in that: A plurality of protruding support plates are arranged on the inner wall of the exhaust cavity, a plurality of support screws are threadedly mounted on the support plates, and one end of the support screw passes through the partition plate and extends toward one side of the filter assembly.

7. The vehicle smoke detector according to claim 1, characterized in that: An exhaust pipe is installed on the shell and on each exhaust port, and each exhaust pipe is bent downward.

8. The vehicle smoke detector according to claim 1, characterized in that: When the bottom cover is installed in the bottom opening, the bottom surface height of the bottom cover is higher than the edge height of the bottom opening of the shell.

9. The vehicle smoke detector according to claim 1, characterized in that: The shell is also provided with a wiring hole connected to the installation cavity, the wiring hole is provided with a waterproof connector, and the wire of the smoke sensor probe passes through the waterproof connector.

10. The vehicle smoke detector according to claim 1, characterized in that: Two mounting plates are symmetrically arranged on the side walls of the upper part of the shell, each of the mounting plates includes a connecting plate and a fixing plate which are perpendicular to each other, and the connecting plate is welded to the side wall of the shell, the fixing plate is arranged parallel to the top wall of the shell, and a plurality of fixing holes are opened on the fixing plate.

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