Novel smoke prevention and exhaust air pipe

Abstract

The utility model discloses a novel smoke prevention and exhaust air pipe which comprises a first flow guide air pipe, one end of the first flow guide air pipe is connected with a first extension pipe, the other end of the first extension pipe is connected with a second flow guide air pipe, and the other end of the second flow guide air pipe is connected with a second extension pipe. And the other end of the second extension pipe is connected with a third flow guide air pipe. According to the novel smoke preventing and discharging air pipe, each air pipe section is divided into a plurality of spaces in the vertical direction through the smoke discharging air pipe, the negative pressure of each space is consistent when a draught fan operates, and therefore the other end of each space extends to the position above a smoke inlet shutter at different positions, and the smoke discharging effect is achieved. The pressure intensity of each smoke inlet louver is not affected by the flow velocity of other spaces, so that sufficient negative pressure is formed above the smoke inlet louver to suck smoke at the lower end opening of the smoke inlet louver, the effect of uniformly discharging the smoke on site is achieved, and a better escape environment is better created for escapers.

Description

Technical Field

[0001] The utility model relates to the technical field of fire protection facilities, in particular to a novel smoke exhaust duct. Background Art

[0002] The smoke exhaust duct is mainly used for fire emergency, and its purpose is to quickly exhaust the smoke at the fire scene to the outside, because the smoke is toxic and can easily make the escapees faint, so the facility can extract the thick smoke to provide a safe escape environment for the escapees; however, the smoke exhaust duct currently used when extracting indoor smoke, because the negative pressure generated by the fan is unevenly distributed, the smoke exhaust port close to the fan has a fast smoke exhaust flow rate, the farther away from the fan, the lower the negative pressure and the slower the flow rate, so the uneven distribution of negative pressure leads to different smoke exhaust speeds in various places, so that the fire scene far away from the fan cannot exhaust the smoke, which still makes the escapees unable to escape safely. For this reason, we propose a new type of smoke exhaust duct. Utility Model Content

[0003] The main purpose of the utility model is to provide a novel smoke exhaust duct, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A novel smoke exhaust duct comprises a first air guide duct, one end of the first air guide duct is connected to a first extension pipe, the other end of the first extension pipe is connected to a second air guide duct, the other end of the second air guide duct is connected to a second extension pipe, the other end of the second extension pipe is connected to a third air guide duct, the other end of the third air guide duct is connected to a third extension pipe, the other end of the third extension pipe is connected to a fourth air guide duct, the other end of the fourth air guide duct is connected to a fourth extension pipe, the other end of the fourth extension pipe is connected to a fifth air guide duct, the lower surfaces of the first air guide duct, the second air guide duct, the third air guide duct, the fourth air guide duct and the fifth air guide duct are all embedded with smoke inlet shutters, the interior of the first air guide duct is fixedly installed with a No. 1 partition, the interior of the first extension pipe is fixedly installed with a No. 1 partition, A No. 2 partition is installed, a No. 3 partition is fixedly installed inside the second air guide duct, a No. 1 guide baffle is fixedly installed inside the second air guide duct and is located below the No. 3 partition, a No. 4 partition is fixedly installed inside the second extension pipe, a No. 5 partition is fixedly installed inside the third air guide duct, a No. 2 guide baffle is fixedly installed inside the third air guide duct and is located below the No. 5 partition, a No. 6 partition is fixedly installed inside the third extension pipe, a No. 7 partition is fixedly installed inside the fourth air guide duct, a No. 3 guide baffle is fixedly installed inside the fourth air guide duct and is located below the No. 7 partition, a No. 8 partition is fixedly installed inside the fourth extension pipe, a No. 4 guide baffle is fixedly installed inside the fifth air guide duct, and the other port of the first air guide duct is fixedly connected with a fan connector.

[0006] Furthermore, one side surface of the No. 2 partition, No. 3 partition, No. 1 guide baffle, No. 4 partition, No. 5 partition, No. 2 guide baffle, No. 6 partition, No. 7 partition, No. 3 guide baffle, No. 8 partition and No. 4 guide baffle is fixedly installed with a docking groove.

[0007] Furthermore, there are four No. 1 partitions, and four No. 2 partitions, and the four No. 2 partitions are connected to the edge of one side of the No. 1 partition at the corresponding matching position through the docking groove; there are three No. 3 partitions, and there is one No. 1 guide baffle, and the three No. 3 partitions are connected to the top three No. 2 partitions through the docking groove, and the No. 1 guide baffle is connected to the bottom No. 2 partition through the docking groove; there are three second extension tubes, and the three second extension tubes are connected to the No. 3 partition through the docking groove.

[0008] Furthermore, there are two No. 5 partitions and one No. 2 guide baffle. The two No. 5 partitions are connected with the two top No. 4 partitions through docking grooves, the No. 2 guide baffle is connected with the bottom No. 4 partition through a docking groove, and there are two No. 6 partitions, and the two No. 6 partitions are connected with the two No. 5 partitions through docking grooves.

[0009] Furthermore, the No. 7 partition is connected to the top No. 6 partition through a docking groove, the No. 3 guide baffle is connected to the bottom No. 6 partition through a docking groove, the No. 8 partition is connected to the No. 7 partition through a docking groove, and the No. 4 guide baffle is connected to the No. 8 partition through a docking groove.

[0010] Furthermore, the connecting ports among the first air guide duct, the first extension pipe, the second air guide duct, the second extension pipe, the third air guide duct, the third extension pipe, the fourth air guide duct, the fourth extension pipe and the fifth air guide duct are all fixedly installed with flanges, and are all fixedly connected by bolts passing through the fixing holes of the flanges.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, the smoke exhaust duct divides each section of the duct into multiple spaces above and below, and the negative pressure in each space is consistent when the fan is running, so that the other end of each space is extended to above the smoke inlet louvers at different positions, and the pressure at each smoke inlet louver is not affected by the flow velocity of other spaces, so that there is enough negative pressure above the smoke inlet louver to suck in the smoke at the lower end of the smoke inlet louver, thereby achieving the effect of evenly exhausting the on-site smoke, and better creating a better escape environment for escapees. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structural connection of a new type of smoke exhaust duct in the utility model;

[0014] Figure 2 This is a disassembled plan view of a new type of smoke exhaust duct of the utility model;

[0015] Figure 3 This is a disassembled partial display diagram of a new type of smoke exhaust duct of the utility model;

[0016] Figure 4 This is a disassembled partial cross-sectional view of a new type of smoke exhaust duct of the utility model.

[0017] In the figure: 1. first air guide duct; 101. No. 1 partition; 102. fan connector; 2. first extension pipe; 201. No. 2 partition; 3. second air guide duct; 301. No. 3 partition; 302. No. 1 air guide partition; 4. second extension pipe; 401. No. 4 partition; 5. third air guide duct; 501. No. 5 partition; 502. No. 2 air guide partition; 6. third extension pipe; 601. No. 6 partition; 7. fourth air guide duct; 701. No. 7 partition; 702. No. 3 air guide partition; 8. fourth extension pipe; 801. No. 8 partition; 9. fifth air guide duct; 901. No. 4 air guide partition; 10. smoke inlet louver; 11. docking groove; 12. flange. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] Embodiment 1:

[0020] like Figure 1-4As shown, a novel smoke exhaust duct includes a first guide duct 1, one end of the first guide duct 1 is connected to a first extension pipe 2, the other end of the first extension pipe 2 is connected to a second guide duct 3, the other end of the second guide duct 3 is connected to a second extension pipe 4, the other end of the second extension pipe 4 is connected to a third guide duct 5, the other end of the third guide duct 5 is connected to a third extension pipe 6, the other end of the third extension pipe 6 is connected to a fourth guide duct 7, the other end of the fourth guide duct 7 is connected to a fourth extension pipe 8, and the other end of the fourth extension pipe 8 is connected to a fifth guide duct 9, wherein the pipe lengths of the first air guide duct 1, the first extension pipe 2, the second air guide duct 3, the second extension pipe 4, the third air guide duct 5, the third extension pipe 6, the fourth air guide duct 7, the fourth extension pipe 8 and the fifth air guide duct 9 are set according to specific needs, and the number of the first extension pipe 2, the second extension pipe 4, the third extension pipe 6 and the fourth extension pipe 8 is also set according to the actual length needs, and the lower surfaces of the first air guide duct 1, the second air guide duct 3, the third air guide duct 5, the fourth air guide duct 7 and the fifth air guide duct 9 are all embedded with smoke inlet shutters 10 The first air guide duct 1 has a partition plate 101 fixedly installed inside, the first extension tube 2 has a partition plate 201 fixedly installed inside, the second air guide duct 3 has a partition plate 301 fixedly installed inside, the second air guide duct 3 has a partition plate 302 fixedly installed inside the second air guide duct 3 below the partition plate 301, the second extension tube 4 has a partition plate 401 fixedly installed inside, the third air guide duct 5 has a partition plate 501 fixedly installed inside, the third air guide duct 5 has a partition plate 502 fixedly installed inside the third air guide duct 5 below the partition plate 501, A sixth partition plate 601 is fixedly installed inside the third extension pipe 6, a seventh partition plate 701 is fixedly installed inside the fourth guide air duct 7, a third guide partition plate 702 is fixedly installed inside the fourth guide air duct 7 below the seventh partition plate 701, an eighth partition plate 801 is fixedly installed inside the fourth extension pipe 8, a fourth guide partition plate 901 is fixedly installed inside the fifth guide air duct 9, and a fan connector 102 is fixedly connected to the other end of the first guide air duct 1, wherein the fan connector 102 is used to connect a fan, and the fan is installed outdoors to extract indoor smoke outdoors;

[0021] The second partition 201, the third partition 301, the first guide partition 302, the fourth partition 401, the fifth partition 501, the second guide partition 502, the sixth partition 601, the seventh partition 701, the third guide partition 702, the eighth partition 801 and the fourth guide partition 901 are all fixedly installed with docking grooves 11 on one side surface; the first partition 101 is provided with four, the second partition 201 is provided with four, and the four second partitions 201 are clamped in the corresponding matching position of the first partition through the docking grooves 11. The edge of one side of the plate 101 is connected, three No. 3 partitions 301 are provided, and one No. 1 guide partition 302 is provided. The three No. 3 partitions 301 are connected with the three No. 2 partitions 201 at the top through the docking groove 11, and the No. 1 guide partition 302 is connected with the No. 2 partition 201 at the bottom through the docking groove 11. There are three second extension pipes 4, and the three second extension pipes 4 are connected with the No. 3 partition 301 through the docking groove 11; there are two No. 5 partitions 501, and one No. 2 guide partition 502 The two No. 5 partitions 501 are connected to the two No. 4 partitions 401 at the top through the docking groove 11, the No. 2 guide partition 502 is connected to the No. 4 partition 401 at the bottom through the docking groove 11, and the No. 6 partition 601 is provided with two, and the two No. 6 partitions 601 are connected to the two No. 5 partitions 501 through the docking groove 11; the No. 7 partition 701 is connected to the top No. 6 partition 601 through the docking groove 11, and the No. 3 guide partition 702 is connected to the bottom No. 6 partition through the docking groove 11. Plate 601 is connected, the eighth partition plate 801 is connected with the seventh partition plate 701 through the docking groove 11, and the fourth guide partition plate 901 is connected with the eighth partition plate 801 through the docking groove 11; the connecting ports between the first guide air duct 1, the first extension pipe 2, the second guide air duct 3, the second extension pipe 4, the third guide air duct 5, the third extension pipe 6, the fourth guide air duct 7, the fourth extension pipe 8 and the fifth guide air duct 9 are all fixedly installed with flanges 12, and are all fixedly connected by bolts passing through the fixing holes of the flanges 12.

[0022] It should be noted that the utility model is a new type of smoke exhaust duct. During installation, it is docked through the flange 12. At the same time, the docking groove 11 at the corresponding position is snapped into the corresponding position, such as the docking groove 11 on the No. 2 partition 201 is snapped into the edge position of the No. 1 partition 101, and the connection is completed by analogy. After the connection, the fifth guide air duct 9, No. 8 partition 801, No. 7 partition 701, No. 6 partition 601, No. 5 partition 501, No. 4 partition 401, No. 3 partition 301, No. 2 partition 201 and No. 1 partition 101 on the top layer are connected, and the negative pressure in the upper space draws away the smoke at the smoke inlet louver 10 on the fifth guide air duct 9, and the No. 3 guide baffle 702, No. 6 partition 601, No. 5 partition 501, No. 4 partition 401, No. 3 partition 301, No. 2 partition 201 and No. 1 partition 101 on the lower layer After the No. 1 partition 101 is connected, the negative pressure of the upper space draws away the smoke at the smoke inlet louver 10 on the fourth guide air duct 7. After the No. 2 guide baffle 502, No. 4 baffle 401, No. 3 baffle 301, No. 2 baffle 201 and No. 1 baffle 101 in the lower layer are connected, the negative pressure of the upper space draws away the smoke at the smoke inlet louver 10 on the third guide air duct 5. Similarly, after the No. 1 guide baffle 302, No. 2 baffle 201 and No. 1 baffle 101 are connected, the negative pressure of the upper space draws away the smoke at the smoke inlet louver 10 on the second guide air duct 3. The negative pressure generated by the space under the No. 1 partition 101 of the lowest layer draws away the smoke at the smoke inlet louver 10 on the first guide air duct 1. In this way, the total negative pressure generated by the fan is evenly dispersed to various points of the entire smoke exhaust duct, so that the smoke can be evenly discharged from various points in the room.

[0023] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A new type of smoke exhaust duct, characterized by: The invention comprises a first air guide duct (1), one end of the first air guide duct (1) is connected to a first extension tube (2), the other end of the first extension tube (2) is connected to a second air guide duct (3), the other end of the second air guide duct (3) is connected to a second extension tube (4), the other end of the second extension tube (4) is connected to a third air guide duct (5), the other end of the third air guide duct (5) is connected to a third extension tube (6), the other end of the third extension tube (6) is connected to a fourth air guide duct (7), the fourth air guide duct The other end of the pipe (7) is connected to a fourth extension pipe (8), the other end of the fourth extension pipe (8) is connected to a fifth air guide pipe (9), the lower surfaces of the first air guide pipe (1), the second air guide pipe (3), the third air guide pipe (5), the fourth air guide pipe (7) and the fifth air guide pipe (9) are all embedded with smoke inlet shutters (10), the interior of the first air guide pipe (1) is fixedly installed with a first partition plate (101), the interior of the first extension pipe (2) is fixedly installed with a second partition plate (201), and the second air guide pipe (1) is fixedly installed with a second partition plate (201). A third partition plate (301) is fixedly installed inside the air duct (3); a first partition plate (302) is fixedly installed inside the second air guide air duct (3) and is located below the third partition plate (301); a fourth partition plate (401) is fixedly installed inside the second extension pipe (4); a fifth partition plate (501) is fixedly installed inside the third air guide air duct (5); a second partition plate (502) is fixedly installed inside the third air guide air duct (5) and is located below the fifth partition plate (501); and a third extension pipe (6) is fixedly installed inside the air guide air duct (5). A sixth partition plate (601) is fixedly installed inside, a seventh partition plate (701) is fixedly installed inside the fourth air guide duct (7), a third air guide partition plate (702) is fixedly installed inside the fourth air guide duct (7) below the seventh partition plate (701), an eighth partition plate (801) is fixedly installed inside the fourth extension tube (8), a fourth air guide partition plate (901) is fixedly installed inside the fifth air guide duct (9), and the other end of the first air guide duct (1) is fixedly connected to a fan connector (102).

2. The novel smoke exhaust duct according to claim 1 is characterized in that: A docking groove (11) is fixedly mounted on one side surface of the No. 2 baffle (201), the No. 3 baffle (301), the No. 1 guide baffle (302), the No. 4 baffle (401), the No. 5 baffle (501), the No. 2 guide baffle (502), the No. 6 baffle (601), the No. 7 baffle (701), the No. 3 guide baffle (702), the No. 8 baffle (801) and the No. 4 guide baffle (901).

3. The novel smoke exhaust duct according to claim 2 is characterized in that: There are four No. 1 partitions (101), and there are four No. 2 partitions (201). The four No. 2 partitions (201) are connected to the edge of one side of the No. 1 partition (101) at the corresponding matching position through the docking groove (11). There are three No. 3 partitions (301), and there is one No. 1 guide partition (302). The three No. 3 partitions (301) are connected to the top three No. 2 partitions (201) through the docking groove (11), and the No. 1 guide partition (302) is connected to the bottom No. 2 partition (201) through the docking groove (11). There are three second extension tubes (4), and the three second extension tubes (4) are connected to the No. 3 partition (301) through the docking groove (11).

4. The novel smoke exhaust duct according to claim 3 is characterized in that: There are two No. 5 partitions (501), and there is one No. 2 guide partition (502). The two No. 5 partitions (501) are connected to the two No. 4 partitions (401) at the top through a docking groove (11), and the No. 2 guide partition (502) is connected to the No. 4 partition (401) at the bottom through a docking groove (11). There are two No. 6 partitions (601), and the two No. 6 partitions (601) are connected to the two No. 5 partitions (501) through a docking groove (11).

5. The novel smoke exhaust duct according to claim 4 is characterized in that: The No. 7 partition (701) is connected to the top No. 6 partition (601) through the docking groove (11), the No. 3 guide partition (702) is connected to the bottom No. 6 partition (601) through the docking groove (11), the No. 8 partition (801) is connected to the No. 7 partition (701) through the docking groove (11), and the No. 4 guide partition (901) is connected to the No. 8 partition (801) through the docking groove (11).

6. The novel smoke exhaust duct according to claim 5 is characterized in that: The connection ports between the first air guide duct (1), the first extension tube (2), the second air guide duct (3), the second extension tube (4), the third air guide duct (5), the third extension tube (6), the fourth air guide duct (7), the fourth extension tube (8) and the fifth air guide duct (9) are all fixedly mounted with flanges (12) and are all fixedly connected by bolts passing through fixing holes of the flanges (12).

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