CN220504412U - Mechanical smoke exhaust system for improving space clear height - Google Patents

Abstract

The utility model discloses a mechanical smoke exhaust system for improving the clear height of a space, wherein a smoke exhaust well penetrates through all floors of a building, a normally closed smoke exhaust port is arranged on the side wall of the smoke exhaust well of each floor, the normally closed smoke exhaust port is connected with a horizontal air pipe through a smoke exhaust fireproof valve, the horizontal air pipe is connected with a lining air pipe, and the lining air pipe is positioned in the smoke exhaust well; the normally closed smoke vent comprises a wind gap body, an actuating mechanism and a manual opening device, an access door is arranged at the lower part of the normally closed smoke vent, a smoke exhaust machine room is arranged on a building roof, and a smoke exhaust fan communicated with a smoke exhaust well is arranged in the smoke exhaust machine room. The beam bottom is canceled to be horizontally provided with the smoke exhaust air pipe, the side wall of the smoke exhaust well is provided with the normally closed smoke exhaust port, the normally closed smoke exhaust port is connected with the horizontal air pipe through the smoke exhaust fireproof valve, and the horizontal air pipe is further connected with the lining air pipe positioned in the smoke exhaust well, so that the requirements of mechanical smoke exhaust of a pavement or a room can be met, the clear height of the space can be improved, and the space using function of a building can be improved.

Description

Mechanical smoke exhaust system for improving space clear height

Technical Field

The utility model belongs to the technical field of building smoke exhaust, and particularly relates to a mechanical smoke exhaust system for improving space clear height.

Background

For buildings with lower floor heights, if mechanical smoke discharging is required to be arranged on a pavement or a room, a smoke discharging air pipe is horizontally arranged at the bottom of a beam in the conventional method, and because of more electromechanical pipelines in the pavement or the room, the net height of the pavement or the room can be further reduced, and the using function of the building is affected. If the building floor height is increased due to the horizontal smoke exhaust duct, the investment is increased and the economic cost is too high.

The China patent with the application number of 201621334228.5 discloses a building fire control, smoke and fire extinguishing monitoring and controlling device, and the floor air duct on each floor is all communicated with a smoke discharging well, and the length of the floor air duct extending out of the smoke discharging well is longer, so that the clear height of a pavement or a room can be reduced, and the actual use of a building is affected.

The Chinese patent with the application number of 202020947532.7 discloses an internal pavement fire-fighting smoke exhaust system, a smoke exhaust machine room is arranged on a roof, a smoke exhaust fan is installed in the machine room, a main pipe of the smoke exhaust fan is separated into a plurality of branch pipes after exiting the machine room, the plurality of branch pipes are respectively connected to smoke exhaust air pipes in each vertical air duct in an octopus type connection mode, a plurality of smoke exhaust air pipes are summarized to the smoke exhaust fan, the smoke exhaust main pipe and the branch pipes are arranged on the roof, and larger roof space is occupied, so that other equipment of the roof can be influenced; each smoke exhaust port is additionally provided with a smoke exhaust valve, so that the depth of the vertical air duct is increased; the vertical air channels on two sides of the pavement are more, the size is larger, and the larger use space is occupied; the number of the smoke outlets is large, and the reliability of the system can be reduced.

Disclosure of Invention

Aiming at the problems that the horizontal smoke exhaust air pipe of a building with a lower floor height in the prior art can further reduce the clear height of a pavement or a room and influence the use function of the building, the utility model provides a mechanical smoke exhaust system for improving the clear height of a space.

The object of the utility model is achieved in the following way:

the mechanical smoke exhaust system for improving the space clear height is characterized in that a smoke exhaust well penetrates through all floors of a building, a normally closed smoke exhaust port is formed in the side wall of the smoke exhaust well of each floor, the normally closed smoke exhaust port is connected with a horizontal air pipe through a smoke exhaust fireproof valve, the horizontal air pipe is connected with a lining air pipe, and the lining air pipe is positioned in the smoke exhaust well; the normally closed smoke vent comprises a wind gap body, an actuating mechanism and a manual opening device, an access door is arranged at the lower part of the normally closed smoke vent, a smoke exhaust machine room is arranged on a building roof, and a smoke exhaust fan communicated with a smoke exhaust well is arranged in the smoke exhaust machine room.

The top of the normally closed smoke outlet is mounted against the suspended ceiling, the distance between the top of the normally closed smoke outlet and the top of the access door is not less than 300mm, the horizontal distance between the normally closed smoke outlet and any point in a smoke-proof partition served by the normally closed smoke outlet is less than 30m, and the distance between the bottom of the normally closed smoke outlet manual opening device and the finishing surface of the building is 1200-1500 mm.

The width of the floor slab at the wall where the normally closed smoke outlet is positioned is not less than 350mm.

The clearance between the lining air pipe and the periphery of the smoke exhaust well is not more than 100mm, and the gap is used for plugging the nonflammable material.

The fume exhaust well wall is a reinforced concrete wall, a masonry wall or a light wall meeting the requirement of the fire resistance limit of 1.00 h.

The access door is a fire door of class B, the height is not less than 1200mm, the width is not less than 600mm, and the distance between the bottom of the access door and the finishing surface of the building is not less than 200mm.

Compared with the prior art, the utility model cancels the horizontal arrangement of the smoke exhaust air pipe at the beam bottom, and the side wall of the smoke exhaust well is provided with the normally closed smoke exhaust port, the normally closed smoke exhaust port is connected with the horizontal air pipe through the smoke exhaust fireproof valve, and the normally closed smoke exhaust port is further connected with the lining air pipe positioned in the smoke exhaust well through the horizontal air pipe, thereby not only meeting the requirements of mechanical smoke exhaust in a pavement or a room, but also improving the clear height of the space and the space use function of the building.

Drawings

Fig. 1 is a top view of the present utility model.

Fig. 2 is a schematic view of the utility model at a floor.

Fig. 3 is a schematic structural view of the present utility model.

Detailed Description

As shown in fig. 1-3, a mechanical smoke exhaust system for improving the space clear height is characterized in that a smoke exhaust well 5 penetrates through all floors of a building, a normally closed smoke exhaust port 1 is arranged on the side wall of the smoke exhaust well 5 of each floor, the normally closed smoke exhaust port 1 is connected with a horizontal air pipe 3 through a smoke exhaust fireproof valve 2, the horizontal air pipe 3 is connected with a lining air pipe 4, and the lining air pipe 4 is positioned in the smoke exhaust well 5; the normally closed smoke outlet 1 comprises a wind outlet body 1-a, an actuating mechanism 1-b and a manual opening device 1-c, an access door 7 is arranged at the lower part of the normally closed smoke outlet 1, a smoke exhaust machine room is arranged on a building roof, and a smoke exhaust fan communicated with a smoke exhaust well (5) is arranged in the smoke exhaust machine room.

The smoke exhaust fireproof valve 2 is a normally open smoke exhaust fireproof valve, and is normally open at ordinary times, and when a fire disaster occurs, the valve is kept in an open state; when the temperature of the pipeline reaches 280 ℃, the fuse acts, and the valve is automatically closed; and outputting a valve closing signal, and stopping the interlocking smoke exhaust fan.

If the smoke prevention subarea where the normally closed smoke outlet 1 is located catches fire, the smoke prevention subarea personnel can open the air outlet body 1-a through the manual opening device 1-c and the actuating mechanism 1-b, and simultaneously, the smoke exhaust fan of the building roof is opened in an interlocking manner to timely remove smoke generated by the fire. Meanwhile, the building fire control center can also remotely open the normally closed smoke outlet 1 of the fire smoke prevention partition and the smoke exhaust fan of the building roof to timely remove smoke formed by fire.

The actuating mechanism 1-b of the normally closed smoke outlet is provided with a steel wire rope, is connected with the manual opening device 1-c, and can transmit signals to the fire control center after the normally closed smoke outlet is opened by the manual opening device, and the fire control center opens the smoke exhaust fan; the fire control center can also directly give a signal to the actuating mechanism to open the normally closed smoke outlet and simultaneously open the smoke exhaust fan. The normally closed smoke outlet 1 and the tuyere body 1-a, the actuating mechanism 1-b and the manual opening device 1-c are mature technologies in the prior art, and not described in detail in the present application, of course, the smoke outlet 1 and the tuyere body 1-a, the actuating mechanism 1-b and the manual opening device 1-c can also adopt other structures meeting the design specifications, for example, refer to the opening or closing of the smoke outlet in the chinese patent with the application number 201921115500.4.

During design, the specifications of the normally closed smoke outlet 1, the smoke discharging fireproof valve 2, the horizontal air pipe 3, the lining air pipe 4 and the smoke discharging well 5 are determined according to the space calculation smoke discharging amount and the standard required wind speed. Normally, the normally closed smoke outlet 1 is preferably mounted with the top against the ceiling, and the distance L from the top of the access door 7 is preferably not less than 300mm; the distance between the bottom of the normally closed smoke outlet 1 manual opening device 1-c and the finishing surface of the building is preferably 1200 mm-1500 mm. The access door 7 is a fire door of grade B, the height is preferably not less than 1200mm, the width is preferably not less than 600mm, and the distance between the bottom and the finishing surface of the building is preferably not less than 200mm. The width A of the floor slab at the wall where the normally closed smoke outlet 1 is located is not smaller than 350mm, and the requirement of standing and overhauling of personnel is met. On the premise of meeting the installation requirement of the lining air pipe, the clearance between the lining air pipe 4 and the periphery of the smoke exhaust well 5 is not more than 100mm, and the gap is tightly blocked by using a nonflammable material, so that the falling risk of personnel is avoided.

When the mechanical smoke exhaust system for improving the space clearance is constructed, firstly reserving a floor hole and a floor 6 at the smoke exhaust well 5 according to a design drawing; secondly, sequentially installing a lining air pipe 4, a horizontal air pipe 3, a smoke exhaust fireproof valve 2, the horizontal air pipe 3 and a normally closed smoke exhaust port 1, and tightly plugging all gaps around the lining air pipe 4 and a smoke exhaust well 5 by using a non-combustible material; and finally, constructing all walls of the smoke exhaust well 5, wherein all walls of the smoke exhaust well 5 can be reinforced concrete walls, masonry walls, light walls and the like meeting the requirement of the fire resistance limit of 1.00 h.

The building roof sets up the computer lab of discharging fume, is provided with the exhaust fan in the computer lab of discharging fume, and the exhaust fan discharges the flue gas of the inside lining tuber pipe 4 of well of discharging fume.

The utility model cancels the horizontal arrangement of the smoke exhaust air pipe at the beam bottom, and the side wall of the smoke exhaust well is provided with the normally closed smoke exhaust port, the normally closed smoke exhaust port is connected with the horizontal air pipe through the smoke exhaust fireproof valve, and the normally closed smoke exhaust port is further connected with the lining air pipe positioned in the smoke exhaust well through the horizontal air pipe, thereby not only meeting the requirements of mechanical smoke exhaust of a pavement or a room, but also improving the clear height of the space and the space use function of a building.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that various changes and modifications can be made herein without departing from the general inventive concept.

Claims (6)

1. Mechanical smoke exhaust system for improving space clearance, which is characterized in that: the smoke exhaust wells (5) penetrate all floors of the building, normally closed smoke exhaust ports (1) are formed in the side walls of the smoke exhaust wells (5) of each floor, the normally closed smoke exhaust ports (1) are connected with horizontal air pipes (3) through smoke exhaust fireproof valves (2), the horizontal air pipes (3) are connected with lining air pipes (4), and the lining air pipes (4) are located in the smoke exhaust wells (5); the normally closed smoke outlet (1) comprises a wind outlet body (1-a), an actuating mechanism (1-b) and a manual opening device (1-c), an access door (7) is arranged at the lower part of the normally closed smoke outlet (1), a smoke exhaust machine room is arranged on a building roof, and a smoke exhaust fan communicated with a smoke exhaust well (5) is arranged in the smoke exhaust machine room.

2. A mechanical fume extraction system for increasing the net height of a space according to claim 1, wherein: the top of the normally closed smoke outlet (1) is mounted against the suspended ceiling, the distance between the top of the normally closed smoke outlet and the top of the access door (7) is not less than 300mm, the horizontal distance between the normally closed smoke outlet and any point in a smoke-proof partition served by the normally closed smoke outlet is less than 30m, and the distance between the bottom of the manually opened device (1-c) of the normally closed smoke outlet (1) and the finishing surface of the building is 1200-1500 mm.

3. A mechanical fume extraction system for increasing the net height of a space according to claim 1, wherein: the width of the floor slab at the wall where the normally closed smoke outlet (1) is positioned is not less than 350mm.

4. A mechanical fume extraction system for increasing the net height of a space according to claim 1, wherein: the clearance between the lining air pipe (4) and the periphery of the smoke exhaust well (5) is not more than 100mm, and the gap is used for plugging the nonflammable material.

5. A mechanical fume extraction system for increasing the net height of a space according to claim 1, wherein: the wall body of the smoke exhaust well (5) is a reinforced concrete wall, a masonry wall or a light wall body meeting the requirement of the fire resistance limit of 1.00 h.

6. A mechanical fume extraction system for increasing the net height of a space according to claim 1, wherein: the access door (7) is a grade-B fireproof door, the height is not less than 1200mm, the width is not less than 600mm, and the distance between the bottom of the access door and the finishing surface of the building is not less than 200mm.