Waterproof air-breathing smoke-sensing fire detection device

Abstract

The utility model relates to a waterproof air-breathing smoke-sensing fire detection device, which comprises a box body, a fan, a filter and a sensor, the box body is communicated with an air inlet hole for introducing sampling gas into the box body, a partition plate is arranged in the box body and divides the interior of the box body into a front cavity and a rear cavity, and a water baffle for separating the air inlet hole from the rear cavity is arranged at the upper part of the partition plate; an arc-shaped bottom plate which is concavely arranged downwards is arranged at the lower part in the front cavity; the fan is arranged in the rear cavity of the box body, a drainage hole for communicating an air inlet of the fan with the front cavity is formed in the partition plate, an air outlet of the fan is communicated with the rear cavity, and the rear cavity is communicated with an exhaust hole; and the filter and the sensor are communicated with the lower part of the box body. According to the utility model, through the waterproof structure design of the water baffle, the lower water retaining platform, the upper water retaining platform and the like, condensate water can be ensured not to flow into the internal circuit of the sensor, and the air-breathing smoke-sensing fire detection device can be ensured to operate safely and effectively in a humid environment.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke fire detection, in particular to a waterproof air-suction type smoke fire detection device. Background Art

[0002] Cold storage is a warehouse that creates low temperature conditions and suitable humidity through cooling facilities, which can extend the storage period of various products. With the development and continuous progress of social economy, the application of cold storage is becoming more and more extensive, but when a fire occurs in a cold storage, it is difficult to put out the fire, which can easily cause serious losses. In order to prevent serious fires in cold storage, cold storage is usually installed with an aspirating smoke fire detection alarm system. The aspirating smoke fire detection alarm system can reliably detect smoke in the early stages of a fire, but when the water vapor content in the cold storage is too high, it will interfere with the detection of the alarm system and have an adverse effect on the electronic components inside the fire alarm equipment.

[0003] The existing aspirating smoke fire detection alarm system does not have a waterproof function. When used in a humid environment, once water enters the internal circuit of the device to form a short circuit, it will burn the electronic components. When the aspirating smoke fire detection alarm system is used in a humid environment, waterproof performance is very important. The filter is generally located under the fan, and a large amount of air is blown directly into the filter. About 40% of the air will enter the filter for filtration, affecting the efficiency and service life of the filter. Utility Model Content

[0004] The main purpose of the utility model is to provide a waterproof aspirating smoke fire detection device to solve the problem that when the existing aspirating smoke fire detection device is used in a humid environment, condensed water will flow into the internal circuit of the device to form a short circuit.

[0005] To solve the above problems, the utility model is achieved as follows:

[0006] A waterproof suction type smoke fire detection device comprises a box body, a fan, a filter and a sensor; the box body is connected with an air inlet hole for introducing sampling gas into the box body, a partition is arranged in the box body, the partition divides the inside of the box body into a front cavity and a rear cavity, a water baffle is arranged on the upper part of the partition for isolating the air inlet hole from the rear cavity; the lower part of the front cavity is provided with an arc bottom plate concave downward;

[0007] The fan is arranged in the rear cavity of the box body, the partition is provided with a drainage hole for connecting the air inlet of the fan and the front cavity, the air outlet of the fan is connected to the rear cavity, and the rear cavity is connected with an exhaust hole; the filter and the sensor are connected and arranged at the lower part of the box body.

[0008] Wherein, a lower water retaining platform is arranged on one side of the partition adjacent to the rear cavity, and the lower water retaining platform is provided with a first through hole for connecting the rear cavity with the inlet end of the filter.

[0009] Wherein, an upper water retaining platform is fixedly provided on one side of the partition adjacent to the front cavity, and the upper water retaining platform is provided with a second through hole for connecting the front cavity and the rear cavity.

[0010] Wherein, the sensor is located above the filter.

[0011] The partition plate is provided with a third through hole for communicating with the filter outlet end, the partition plate is provided with a fourth through hole for communicating with the sensor air inlet end, and the partition plate is provided with a fifth through hole for communicating with the sensor air outlet end;

[0012] A side of the partition adjacent to the rear cavity is provided with a first air duct for connecting the third through hole and the fourth through hole, and a side of the partition adjacent to the rear cavity is provided with a second air duct for connecting the fifth through hole and the front cavity.

[0013] Wherein, the exhaust hole is connected and arranged at the bottom of the rear cavity.

[0014] Wherein, the height of the upper water retaining platform is higher than the top of the drainage hole.

[0015] Wherein, the air inlet is connected to the top end of the box body.

[0016] The bottom end of the water baffle is fixedly connected to the top end of the partition, and the upper part of the water baffle extends obliquely upward and is arranged on a side of the rear cavity away from the partition.

[0017] Wherein, the lower water retaining platform is higher than the exhaust hole.

[0018] The beneficial effects of this application are:

[0019] The utility model provides a partition in the box body, the partition divides the inside of the box body into a front cavity and a rear cavity, and a water baffle is provided on the upper part of the partition for isolating the air inlet from the rear cavity, so that air directly enters the front cavity from the air inlet, and condensed water in the air can flow down along the water baffle and then be discharged from the exhaust hole, thereby preventing condensed water in the air from entering the sensor. A downwardly concave arc bottom plate is provided at the lower part of the front cavity, which can prevent condensed water from accumulating in the box body.

[0020] The lower water retaining platform and the upper water retaining platform provided in the utility model can respectively prevent condensed water from entering the filter and the sensor. Through the waterproof structure design of the lower water retaining platform, the upper water retaining platform and other places, it can be ensured that condensed water will not flow into the internal circuit of the sensor, ensuring that the suction type smoke fire detection device of the utility model can operate safely and effectively in a humid environment.

[0021] In addition, the first through hole of the lower water retaining platform of the utility model corresponds to the filter inlet, which can prevent a large amount of air from being directly sucked into the filter, thereby significantly improving the efficiency and service life of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Figure 1 It is a schematic diagram of the structure of the utility model after removing the front cover plate;

[0024] Figure 2 It is a structural schematic diagram of the utility model without the rear cover plate;

[0025] Figure 3 This is a structural schematic diagram of the utility model from another perspective without the rear cover;

[0026] Figure 4 yes Figure 3 AA section view;

[0027] Figure 5 It is the front view of the utility model;

[0028] Figure 6 yes Figure 5 BB section view;

[0029] Figure 7 It is a structural schematic diagram of the utility model from another viewing angle.

[0030] Description of Reference Numerals

[0031] 1. Box body; 2. Fan; 3. Filter; 4. Sensor; 5. Lower water retaining platform; 11. Air inlet; 12. Partition; 13. Front cavity; 14. Rear cavity; 141. Exhaust hole; 15. Water retaining plate; 16. Drain hole; 17. Front cover plate; 18. Rear cover plate; 131. Arc-shaped bottom plate; 51. First through hole; 6. Third through hole; 7. Upper water retaining platform; 71. Second through hole; 81. Fourth through hole; 82. Fifth through hole; 91. First air duct; 92. Second air duct. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] like Figure 1-Figure 4 As shown, a waterproof suction type smoke fire detection device of the utility model comprises a box body 1, a fan 2, a filter 3 and a sensor 4. The box body 1 is connected with an air inlet 11 for introducing the sampling gas into the box body 1. The number of the air inlet 11 is at least one. In this embodiment, the number of the air inlet 11 is two, and the two air inlet holes 11 are connected with the top of the box body 1.

[0034] like Figure 1-Figure 4 , Figure 6 As shown, a partition 12 is arranged in the box body 1, and the partition 12 is arranged vertically. The partition 12 divides the interior of the box body 1 into a front cavity 13 and a rear cavity 14. A water baffle 15 is arranged on the upper part of the partition 12 for isolating the air inlet 11 from the rear cavity 14. The bottom end of the water baffle 15 is fixedly connected to the top end of the partition 12, and the upper part of the water baffle 15 extends obliquely upward and is fitted on the side of the rear cavity 14 away from the partition 12. In this embodiment, the bottom end of the water baffle 15 is integrally connected to the top end of the partition 12. That is, the water baffle 15 is an inclined plate body, the high end of which is adjacent to the inner side wall of the rear cavity 14 away from the partition 12, and the upper and lower parts of the plate body are integrally connected to a curved arc portion. A downwardly concave arc bottom plate 131 is provided at the lower part of the front cavity 13. In the present embodiment, the arc bottom plate 131 includes an arc-shaped bottom and an inclined portion integrally connected to both sides of the bottom. The two inclined portions are integrally connected to the vertical side walls on the corresponding sides of the front cavity 13. The upper surface of the bottom of the arc bottom plate 131 is slightly lower than the bottom end of the drainage hole, or the upper surface of the bottom of the arc bottom plate 131 is flush with the bottom end of the drainage hole, that is, the diameter of the circumferential surface where the upper surface of the arc bottom plate 131 is located is slightly greater than or equal to the aperture of the drainage hole 16, so that it can be ensured that the condensed water can be completely drained while enhancing the collection effect of the condensed water in the air. Figure 5-Figure 7 As shown, the box body 1 includes a front cover plate 17 screwed to the front side thereof and used to close the front cavity 13 , and a rear cover plate 18 screwed to the rear side thereof and used to close the rear cavity 14 .

[0035] like Figure 1 , Figure 2As shown, the fan 2 is arranged in the rear cavity 14 of the box body 1, and a drain hole 16 for connecting the air inlet of the fan 2 and the front cavity 13 is provided on the partition 12. The drain hole 16 is arranged opposite to the air inlet of the fan 2, and the air outlet of the fan 2 is connected to the rear cavity 14. The rear cavity 14 is connected to the exhaust hole 141, and the exhaust hole 141 is connected to the bottom of the rear cavity 14, that is, the exhaust hole 141 passes through the bottom of the rear cavity 14.

[0036] The filter 3 and the sensor 4 are connected and arranged at the lower part of the box body 1. The sensor 4 is a laser detection cavity. The filter 3 and the sensor 4 both have an inlet end and an outlet end. The filter 3 and the sensor 4 belong to the conventional technology in the art and are not the improvement of the utility model, so they are not described in detail in this embodiment. Among them, the sensor 4 is located above the filter 3.

[0037] like Figure 2-Figure 4 As shown, in the present utility model, a lower water retaining platform 5 is provided on one side of the partition 12 adjacent to the rear cavity 14, and the lower water retaining platform 5 is provided with a first through hole 51 for connecting the rear cavity 14 with the inlet end of the filter 3. In the present embodiment, the lower water retaining platform 5 is a hollow cylinder with an open bottom end, and the end of the lower water retaining platform 5 away from the partition 12 is closed, and the first through hole 51 is provided at one end of the lower water retaining platform 5 adjacent to the partition 12 and passes through the partition 12, and the first through hole 51 is provided corresponding to the inlet of the filter 3 (in the present embodiment, the first through hole 51 corresponds to and is opposite to the inlet of the filter 3). The partition 12 is provided with a third through hole 6 for connecting with the outlet end of the filter 3, and the third through hole 6 is provided corresponding to the outlet of the filter 3.

[0038] like Figure 3 As shown, a fourth through hole 81 for connecting with the air inlet end of the sensor 4 is provided on the partition 12, and a fifth through hole 82 for connecting with the air outlet end of the sensor 4 is provided on the partition 12. In this embodiment, the fourth through hole 81 is arranged corresponding to the air inlet of the sensor 4, and the fifth through hole 82 corresponds to the air outlet of the sensor 4.

[0039] like Figure 1 and Figure 3 As shown, an upper water retaining platform 7 is fixedly arranged on one side of the partition 12 adjacent to the front cavity 13, and a second through hole 71 is provided on the upper water retaining platform 7 for connecting the front cavity 13 with the rear cavity 14. In the present embodiment, a hollow cavity is arranged in the upper water retaining platform 7, and the upper water retaining platform 7 is a hollow cavity with an open bottom end, and the second through hole 71 is provided on one side of the upper water retaining platform 7 adjacent to the partition 12, and the second through hole 71 penetrates the partition 12. In the present utility model, the height of the upper water retaining platform 7 is higher than the top of the drainage hole 16. In the present embodiment, the distance between the bottom end of the upper water retaining platform 7 and the top of the drainage hole 16 is 4 mm.

[0040] like Figure 2 , Figure 3As shown, one side of the partition plate 12 adjacent to the rear cavity 14 is provided with a first air duct 91 for connecting the third through hole 6 and the fourth through hole 81 (that is, the third through hole 6 and the fourth through hole 81 are commonly connected to the first air duct 91), and one side of the partition plate 12 adjacent to the rear cavity 14 is provided with a second air duct 92 for connecting the fifth through hole 82 and the front cavity 13, that is, one side of the partition plate 12 adjacent to the rear cavity 14 is provided with a second air duct 92 for connecting the fifth through hole 82 and the second through hole 71 (the fifth through hole 82 and the second through hole 71 are commonly connected to the second air duct 92). In the present embodiment, the third through hole 6 and the fourth through hole 81 are commonly connected to the first air duct 91, and one axial end of the first air duct 91 and the second air duct 92 are fixedly connected to the partition 12, and the other axial end of the first air duct 91 and the second air duct 92 are abutted against the rear side of the box body 1. In the utility model, the first air duct 91 and the second air duct 92 are arranged in the rear cavity 14, and one axial end of the first air duct 91 and the second air duct 92 are integrally connected to the partition 12, and the other axial end of the first air duct 91 and the second air duct 92 are abutted against the rear cover 18.

[0041] like Figure 1-Figure 7 As shown, the use process of the utility model is:

[0042] The sampled air enters the front chamber 13 from the air inlet 11, flows downward along the water retaining plate 15, enters the rear chamber 14 after being sucked in by the fan 2, and most of it is discharged from the exhaust hole 141, and a small part enters the filter 3 from the first through hole 51 in the lower water retaining platform 5. After the large particles such as PM2.5 dust are filtered out by the filter 3, it is discharged from the outlet of the filter 3, passes through the third through hole 6, the first air duct 91 of the rear chamber 14, and the fourth through hole 81, and then enters the air inlet of the sensor 4, and then enters the sensor 4. After the sensor 4 detects smoke, it is discharged from the air outlet of the sensor, and then passes through the fifth through hole 82, the second air duct 92 of the rear chamber 14, and the second through hole 71 in the upper water retaining platform 7, and enters the front chamber 13, and is sucked in by the fan 2, and circulates, ensuring a good circulation of air.

[0043] When the sampled air contains condensed water, after entering from the air inlet 11, the water baffle 15 acts as a partition, so that the condensed water can only flow downward along the water baffle, and will not flow into the back area of ​​the water baffle, which can prevent the condensed water from directly entering the rear chamber 14 with the air, thereby ensuring the dryness of the air entering the filter 3. After the condensed water flows into the front chamber 13 of the box body 1 along the water baffle 15, after the water volume exceeds the height of the drain hole 16, it will flow from the drain hole 16 to the rear chamber 14, flow downward, and be discharged from the exhaust hole 141. Due to the arc setting of the arc bottom plate, the bottom of the front chamber 13 forms an arc bottom surface, so that the condensed water can all flow into the bottom of the arc bottom plate under the guidance of the arc bottom plate 131, avoiding the accumulation of water at other corners of the box body.

[0044] The upper water retaining platform 7 is higher than the highest point of the drainage hole 16, which can ensure that water flows out of the drainage hole 16 and does not overflow the drainage hole 16 and flow into the second through hole 71 in the upper water retaining platform 7, and can prevent water from flowing downward along the second through hole 71 in the upper water retaining platform 7 into the sensor 4. In this embodiment, the fan 2 has a waterproof function, and the operation of the fan 2 will not be affected after the water flows through.

[0045] After the condensed water flows out of the drain hole 16, when it flows downward, the lower water retaining platform 5 can block the water flow, preventing the water flow from flowing into the first through hole 51 in the lower water retaining platform 5, and the lower water retaining platform 5 is located at a certain height above the exhaust hole 141 (that is, the lower water retaining platform 5 is higher than the exhaust hole 141), and the water flow will not overflow and flow into the first through hole 51 in the lower water retaining platform 5. The setting of the lower water retaining platform 5 can prevent the water flow from flowing into the filter 3 along the first through hole 51 in the lower water retaining platform 5. The first through hole 51 is located in the lower water retaining platform 5, and the inlet end of the filter 3 can also be protected by the lower water retaining platform 5. Most of the air sucked from the air inlet 11 will be discharged from the exhaust hole 141, and only about 5% of the air will enter the filter 3 through the first through hole 51 in the lower water retaining platform 5, avoiding a large amount of air from being directly sucked into the filter 3, thereby improving the efficiency and service life of the filter 3.

[0046] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A waterproof aspirating smoke fire detection device, characterized in that: It comprises a box body, a fan, a filter and a sensor; the box body is connected with an air inlet hole for introducing sampling gas into the box body, a partition is arranged in the box body, the partition divides the inside of the box body into a front cavity and a rear cavity, the upper part of the partition is provided with a water baffle for isolating the air inlet hole from the rear cavity; the lower part of the front cavity is provided with an arc-shaped bottom plate concave downward; The fan is arranged in the rear cavity of the box body, the partition is provided with a drainage hole for connecting the air inlet of the fan and the front cavity, the air outlet of the fan is connected to the rear cavity, and the rear cavity is connected with an exhaust hole; the filter and the sensor are connected and arranged at the lower part of the box body.

2. The waterproof air-suction type smoke fire detection device according to claim 1, characterized in that: A lower water retaining platform is arranged on one side of the partition adjacent to the rear cavity, and the lower water retaining platform is provided with a first through hole for connecting the rear cavity with the inlet end of the filter.

3. The waterproof air-suction type smoke fire detection device according to claim 1, characterized in that: An upper water retaining platform is fixedly arranged on one side of the partition adjacent to the front cavity, and a second through hole for connecting the front cavity and the rear cavity is formed on the upper water retaining platform.

4. The waterproof air-suction type smoke fire detection device according to claim 1, characterized in that: The sensor is located above the filter.

5. The waterproof air-suction type smoke fire detection device according to claim 1, characterized in that: The partition plate is provided with a third through hole for communicating with the filter outlet end, the partition plate is provided with a fourth through hole for communicating with the sensor air inlet end, and the partition plate is provided with a fifth through hole for communicating with the sensor air outlet end; A side of the partition adjacent to the rear cavity is provided with a first air duct for connecting the third through hole and the fourth through hole, and a side of the partition adjacent to the rear cavity is provided with a second air duct for connecting the fifth through hole and the front cavity.

6. The waterproof air-suction type smoke fire detection device according to claim 1, characterized in that: The exhaust hole is arranged in communication with the bottom of the rear cavity.

7. The waterproof air-suction type smoke fire detection device according to claim 3, characterized in that: The height of the upper water retaining platform is higher than the top of the drainage hole.

8. The waterproof air-suction type smoke fire detection device according to claim 1, characterized in that: The air inlet is communicated with the top end of the box body.

9. The waterproof air-suction type smoke fire detection device according to claim 1, characterized in that: The bottom end of the water baffle is fixedly connected to the top end of the partition, and the upper part of the water baffle extends obliquely upward and is arranged on a side of the rear cavity away from the partition.

10. The waterproof air-suction type smoke fire detection device according to claim 2, characterized in that: The lower water retaining platform is higher than the exhaust hole.

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