Building fire-fighting smoke exhaust system

Abstract

The invention discloses a building fire-fighting smoke exhaust system, and relates to the technical field of fire-fighting systems. The building fire-fighting smoke exhaust system comprises a smoke exhaust pipeline arranged on a building and a smoke exhaust fan arranged on the smoke exhaust pipeline, and further comprises air supplement equipment arranged on the building, and a control device is arranged on the smoke exhaust fan. The air supplement equipment comprises an air inlet pipeline arranged on the building platform and an air inlet seat arranged on the air inlet pipeline, a fan is arranged in the air inlet seat, an air expansion cover is arranged on the side face of the air inlet seat, and an electric control valve is arranged on the air expansion cover. The building fire-fighting smoke exhaust system is additionally provided with the improved air supplement equipment, so that when the air circulation effect in a building is poor or the negative pressure is too large, auxiliary air supplement is carried out on the space in the building, the smoke exhaust system is helped to work more effectively, the pressure of a smoke exhaust fan is reduced, and when a fire occurs, a windward air expansion cover air flue is rapidly opened, and the fire-fighting effect is improved. And a good air supplement effect in the building is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of fire protection systems, and in particular to a building fire protection smoke exhaust system. Background Art

[0002] The building fire smoke exhaust system is a system that uses mechanical smoke exhaust to exhaust fire smoke from rooms, corridors and other spaces to the outside of the building. It is usually composed of key components such as smoke exhaust ports, smoke exhaust ducts, smoke exhaust fans, and control systems. These components work together to ensure that smoke can be effectively exhausted within a specified time after a fire occurs, so as to reduce smoke concentration and improve visibility of the evacuation route.

[0003] In the prior art, many building fire smoke exhaust systems have high smoke exhaust fan pressure and high load during use, and the mechanical smoke exhaust effect inside the building is not good. This will undoubtedly affect the exhaust effect of thick smoke when a fire occurs, thereby affecting rescue. The main reason for this is that many buildings have large internal negative pressure. If the window sealing effect is good, the internal negative pressure of the building is large, which makes the pressure of the building fire smoke exhaust system high and the effect of conveying thick smoke is poor. If the air supply to the interior of the building is increased, the wind direction often needs to be considered. Because if the wind direction is reversed to the air inlet during the air supply process, it will also cause difficulty in air supply, and the entire building fire smoke exhaust system will be poor. In view of the shortcomings of the prior art, the present invention provides a building fire smoke exhaust system to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a building fire smoke exhaust system, which adds an improved air supply device. The air supply device provides fresh air to the interior of the building, and then when the air circulation effect inside the building is poor or the negative pressure is too large, the air supply for the space inside the building is supplemented with auxiliary air, thereby helping the smoke exhaust system to work more efficiently and reducing the pressure of the smoke exhaust fan. When in use, the windward air expansion hood channel is opened by controlling the electric control valve to control the outside air to automatically enter the interior of the air inlet seat and the air inlet duct, and enter the building. The air supply device also includes a valve opening signal device, which can automatically determine the wind direction position and automatically start the windward electric control valve, so that when a fire occurs, the windward air expansion hood duct is quickly opened to ensure a good air supply effect inside the building.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a building fire smoke exhaust system, comprising a smoke exhaust duct arranged on a building and a smoke exhaust fan arranged on the smoke exhaust duct, the smoke exhaust fan is provided with a control device, and the building fire smoke exhaust system also includes air supply equipment arranged on the building; The air supply equipment includes an air inlet duct arranged on the building platform and an air inlet seat arranged on the air inlet duct, a fan is arranged inside the air inlet seat, an air expansion cover is arranged on the side of the air inlet seat, and an electric control valve is arranged on the air expansion cover; The air inlet seat is provided with a valve opening signal device for controlling the switch of the electric control valve, and the valve opening signal device includes a rotating base arranged on the air inlet seat and a weather vane rotatably connected to the rotating base, a signal contact base is provided inside the rotating base, a signal contact body is provided on the signal contact base, a cantilever is provided on the wind vane, and a conductive sheet in contact with the signal contact body is provided on the cantilever.

[0006] Preferably, a slider is slidably connected inside the signal contact base, a spring is fixedly connected between the slider and the signal contact base, and the slider is fixedly connected to the signal contact body.

[0007] Preferably, a cable is connected between the signal contact body and the electric control valve.

[0008] Preferably, a protective cover is provided above the air inlet seat and the air diffuser cover.

[0009] Preferably, a card-connecting seat is fixedly connected to the building platform, a slot is provided on the card-connecting seat, a plug-in column is fixedly connected to the protective cover, and the plug-in column is movably connected to the slot.

[0010] Preferably, a locking assembly is provided on the clamping seat, and the locking assembly includes an adjustment platform movably clamped on the clamping seat and a locking rod fixedly connected to the adjustment platform, a locking hole is provided on the plug-in column, and the locking rod is movably plugged into the locking hole.

[0011] Preferably, a guide rod is fixedly connected inside the clamping seat, and the adjustment platform is slidably connected to the guide rod.

[0012] Preferably, a screw rod is rotatably connected to the clamping seat, and the screw rod is threadedly connected to the adjusting platform.

[0013] Preferably, the control device includes a fire detector, an alarm and a controller, the fire detector is connected to the alarm and the controller respectively, and the controller is connected to the smoke exhaust fan.

[0014] Preferably, a drainage groove is provided on the clamping seat.

[0015] The present invention discloses a building fire smoke exhaust system, which has the following beneficial effects: 1. The fire smoke exhaust system of the building is equipped with an improved air supply device. The air supply device provides fresh air to the interior of the building, and then when the air circulation effect inside the building is not good or the negative pressure is too large, the air supply device provides auxiliary air supply for the space inside the building, helps the smoke exhaust system to work more effectively, reduces the pressure of the smoke exhaust fan, improves the smoke exhaust effect of the building fire smoke exhaust system, and ensures the stable operation of the equipment. The air supply device has a compact structure and is easy to use. By arranging an air inlet duct and an air inlet seat on the building platform, a plurality of air expansion hoods are arranged on the side of the air inlet seat to increase the air intake effect of the outside to the interior of the building. When in use, the windward air expansion hood channel is opened by the electric control valve, so that the outside air flow automatically enters the interior of the air inlet seat and the air inlet duct, and enters the building. The air supply device also includes a valve opening signal device, which can automatically determine the wind direction position and automatically start the windward electric control valve, so that when a fire occurs, the windward air expansion hood duct is quickly opened to ensure a good air supply effect inside the building.

[0016] 2. In the fire smoke exhaust system of the building, the signal contact base provides support and limitation for the signal contact body. At the same time, through the design of the spring and the slider, the signal contact body has elastic and extensible properties. The spring is in a compressed state. Under the action of the elastic force of the spring, a thrust is applied to the slider and the signal contact body. Therefore, when the conductive sheet contacts the signal contact body, the contact point is stably close to avoid loosening or coming loose, thereby improving the control stability of the electric control valve.

[0017] 3. The fire smoke exhaust system of the building is convenient for providing protection for the air inlet seat and the air expansion hood through the design of the protective cover, ensuring that the air inlet seat and the air expansion hood have a long service life and good stability. The design of the card seat, the plug-in column and the locking assembly makes the installation and positioning of the protective cover convenient. Therefore, after the protective cover is used for a long time, it is also convenient to quickly disassemble the protective cover, so as to replace the aged protective cover, ensuring the convenient maintenance of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the air inlet seat of the present invention; Figure 3 This is a schematic diagram of the air inlet duct of the present invention; Figure 4This is a schematic diagram of disassembling the protective cover of the present invention; Figure 5 It is a structural schematic diagram of the locking assembly of the present invention; Figure 6 A top view of the air inlet seat of the present invention; Figure 7 It is a structural schematic diagram of the valve opening signal device of the present invention; Figure 8 It is a structural schematic diagram of the signal contact body of the present invention.

[0020] In the figure: 1. exhaust pipe; 2. exhaust fan; 3. control device; 31. fire detector; 32. alarm; 33. controller; 4. air supply equipment; 41. air inlet pipe; 42. air inlet seat; 43. air expansion cover; 431. electric control valve; 44. valve opening signal device; 441. rotating base; 442. weather vane; 443. signal contact base; 444. signal contact body; 4441. slider; 4442. spring; 4443. cable; 445. cantilever; 446. conductive sheet; 45. snap-on seat; 451. slot; 452. drain trough; 46. protective cover; 461. plug-in column; 462. lock hole; 47. locking assembly; 471. adjustment table; 472. locking rod; 473. guide rod; 474. screw rod; 5. building platform. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The embodiment of the present application solves the problem of large negative pressure inside many buildings by providing a building fire smoke exhaust system. If the window sealing effect is good, the negative pressure inside the building is large, which makes the pressure of the building fire smoke exhaust system high and the effect of conveying thick smoke is poor. If the air supply inside the building is increased, the wind direction often needs to be considered. Because if the wind direction is reversed to the air inlet during the air supply process, it will also cause difficulty in air supply and poor effect of the entire building fire smoke exhaust system.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The embodiment of the present invention discloses a building fire smoke exhaust system. Figure 1-8As shown, it includes a smoke exhaust pipe 1 arranged on a building and a smoke exhaust fan 2 arranged on the smoke exhaust pipe 1, a control device 3 is arranged on the smoke exhaust fan 2, and the building fire smoke exhaust system also includes an air supply device 4 arranged on the building; The smoke exhaust duct 1 is a pipe system connecting the smoke exhaust port and the smoke exhaust fan 2. The smoke exhaust duct 1 is responsible for transmitting smoke from the inside of the building to the outside to ensure that the smoke will not be retained and spread inside the building; the smoke exhaust fan 2 is the core equipment of the building fire smoke exhaust system, responsible for providing the necessary power to exhaust the smoke to the outside through the smoke exhaust duct 1; the selection, quantity and layout of the smoke exhaust fan 2 should be designed according to the actual situation of the building and the fire protection requirements; The control device 3 includes a fire detector 31, an alarm 32 and a controller 33. The fire detector 31 is connected to the alarm 32 and the controller 33 respectively, and the controller 33 is connected to the smoke exhaust fan 2. The control device 3 is used to monitor and control the operation of the building fire smoke exhaust system. When a fire occurs, the control device 3 can respond quickly, start the smoke exhaust fan 2 and other related equipment, and ensure the normal operation of the smoke exhaust system.

[0025] In addition, the device is also equipped with an improved air supply device 4, which provides fresh air to the interior of the building, and then provides auxiliary air supply to the space inside the building when the air circulation effect inside the building is poor or the negative pressure is too large, thereby helping the smoke exhaust system to work more efficiently, reducing the pressure of the smoke exhaust fan 2, improving the smoke exhaust effect of the building's fire smoke exhaust system, and ensuring stable operation of the equipment.

[0026] The air supply device 4 includes an air inlet duct 41 arranged on the building platform 5 and an air inlet seat 42 arranged on the air inlet duct 41, a fan is arranged inside the air inlet seat 42, an air diffuser 43 is arranged on the side of the air inlet seat 42, and an electric control valve 431 is arranged on the air diffuser 43; the air supply device 4 has a compact structure and is easy to use. The air inlet duct 41 and the air inlet seat 42 are arranged on the building platform 5, wherein a plurality of air diffusers 43 are arranged on the side of the air inlet seat 42, thereby increasing the air supply effect from the outside to the inside of the building. When in use, the windward air diffuser 43 channel is controlled to open by the electric control valve 431, so that the external airflow automatically enters the inside of the air inlet seat 42 and the air inlet duct 41, and enters the building.

[0027] The air inlet seat 42 is provided with a valve opening signal device 44 for controlling the switch of the electric control valve 431. The valve opening signal device 44 includes a rotating base 441 arranged on the air inlet seat 42 and a weather vane 442 rotatably connected to the rotating base 441. A signal contact base 443 is arranged inside the rotating base 441. A signal contact body 444 is arranged on the signal contact base 443. A cantilever 445 is arranged on the weather vane 442. A conductive sheet 446 in contact with the signal contact body 444 is arranged on the cantilever 445. The air supply device 4 also includes a valve opening signal device 44, which can automatically determine the wind direction and automatically start the windward electric control valve 431, so that when a fire occurs, the wind duct of the wind expansion hood 43 facing the wind is quickly opened to ensure a good air supply effect inside the building.

[0028] In the valve opening signal device 44, the base 441 is rotated to provide support for the weather vane 442, and the wind direction is determined by the weather vane 442, wherein the weather vane 442 provides support for the cantilever 445 and the conductive sheet 446. When the weather vane 442 moves with the wind direction, it will drive the cantilever 445 and the conductive sheet 446 to move, so that the conductive sheet 446 contacts with the signal contact body 444 at the corresponding position. When the two signal contact bodies 444 on each group of signal contact bases 443 contact, the circuit corresponding to the control of the electric control valve 431 forms a loop, so the control electric control valve 431 is opened, thereby automatically opening the channel of the air diffuser 43 at the position of the air inlet seat 42, and realizing that the air diffuser 43 facing the wind automatically provides a channel opening, thereby improving the air supply capacity in the building and improving the effect of the building's fire smoke exhaust system.

[0029] The signal contact base 443 is internally slidably connected with a slider 4441, and a spring 4442 is fixedly connected between the slider 4441 and the signal contact base 443. The slider 4441 is fixedly connected to the signal contact body 444, and the signal contact base 443 provides support and limitation for the signal contact body 444. At the same time, through the design of the spring 4442 and the slider 4441, the signal contact body 444 has elastic expansion properties, and the spring 4442 is in a compressed state. Under the elastic force of the spring 4442, a thrust is applied to the slider 4441 and the signal contact body 444. Therefore, when the conductive sheet 446 contacts the signal contact body 444, the contact point is stably close to avoid loosening or coming loose, thereby improving the control stability of the electric control valve 431.

[0030] A cable 4443 is connected between the signal contact body 444 and the electric control valve 431 . The device is designed with the cable 4443 to connect the signal contact body 444 and the electric control valve 431 . The connection is stable and the signal control of the electric control valve 431 is convenient.

[0031] A protective cover 46 is provided above the air inlet seat 42 and the air diffuser hood 43. The design of the protective cover 46 facilitates protection of the air inlet seat 42 and the air diffuser hood 43, thereby ensuring that the air inlet seat 42 and the air diffuser hood 43 have a long service life and good stability.

[0032] A snap-in seat 45 is fixedly connected to the building platform 5, and a slot 451 is provided on the snap-in seat 45. A plug-in column 461 is fixedly connected to the protective cover 46, and the plug-in column 461 is movably snap-connected in the slot 451. The design of the snap-in seat 45 and the plug-in column 461 makes it convenient to install and position the protective cover 46. Therefore, after the protective cover 46 has been used for a long time, it is also convenient to quickly disassemble the protective cover 46, so that the aged protective cover 46 can be replaced, thereby ensuring that the protective cover 46 is easy to maintain.

[0033] The clamping seat 45 is provided with a locking assembly 47, which includes an adjustment platform 471 movably clamped on the clamping seat 45 and a locking rod 472 fixedly connected to the adjustment platform 471. The plug-in column 461 is provided with a locking hole 462, and the locking rod 472 is movably inserted into the locking hole 462. A guide rod 473 is fixedly connected inside the clamping seat 45, and the adjustment platform 471 is slidably connected to the guide rod 473; a screw rod 474 is rotatably connected to the clamping seat 45, and the screw rod 474 is threadedly connected to the adjustment platform 471. With the design of the locking assembly 47, the installation, positioning, locking, and maintenance of the protective cover 46 are convenient; When it is necessary to install and fix the protective cover 46, first move the protective cover 46 onto the building platform 5, and then align the plug-in column 461 with the interior of the slot 451 and insert it. After it is fully inserted, rotate the screw rod 474 so that the screw rod 474 drives the two groups of adjustment platforms 471 to move along the guide rod 473. The guide rod 473 provides lateral support for the adjustment platform 471 to ensure that the force on the adjustment platform 471 is stable. The adjustment platform 471 drives the locking rod 472 to move, and finally multiple groups of locking rods 472 are inserted into the interior of each locking hole 462 at the same time, thereby ensuring that the position of the plug-in column 461 and the protective cover 46 is locked, so that the protective cover 46 position installation locking effect is good.

[0034] The clamping seat 45 is provided with a drainage groove 452 . The design of the drainage groove 452 prevents water from accumulating inside the clamping seat 45 .

[0035] An improved air supply device is added. The air supply device provides fresh air to the interior of the building, and then provides auxiliary air supply to the space inside the building when the air circulation effect inside the building is not good or the negative pressure is too large, so as to help the smoke exhaust system work more effectively, reduce the pressure of the smoke exhaust fan, improve the smoke exhaust effect of the building fire smoke exhaust system, and ensure the stable operation of the equipment. The air supply device has a compact structure and is easy to use. An air inlet duct and an air inlet seat are arranged on the building platform, wherein a plurality of air expansion hoods are arranged on the side of the air inlet seat to increase the air intake effect of the outside to the interior of the building. When in use, the windward air expansion hood channel is opened by the electric control valve, so that the outside air flow automatically enters the interior of the air inlet seat and the air inlet duct, and enters the building. The air supply device also includes a valve opening signal device, which can automatically determine the wind direction position and automatically start the windward electric control valve, so that when a fire occurs, the windward air expansion hood duct is quickly opened to ensure a good air supply effect inside the building.

[0036] The design of the protective cover facilitates protection of the air inlet seat and the air expansion cover, ensuring that the air inlet seat and the air expansion cover have a long life and good stability. The design of the snap-in seat, the plug-in column and the locking assembly makes the installation and positioning of the protective cover convenient. Therefore, after the protective cover is used for a long time, it is also convenient to quickly disassemble the protective cover, so as to replace the aged protective cover, ensuring the easy maintenance of the protective cover.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A building fire smoke exhaust system, comprising a smoke exhaust duct (1) arranged on a building and a smoke exhaust fan (2) arranged on the smoke exhaust duct (1), wherein a control device (3) is provided on the smoke exhaust fan (2), characterized in that: The building fire smoke exhaust system further comprises an air supply device (4) arranged on the building; The air supply device (4) comprises an air inlet duct (41) arranged on the building platform (5) and an air inlet seat (42) arranged on the air inlet duct (41); a fan is arranged inside the air inlet seat (42); an air diffuser (43) is arranged on the side of the air inlet seat (42); and an electric control valve (431) is arranged on the air diffuser (43); The air inlet seat (42) is provided with a valve opening signal device (44) for controlling the switch of the electric control valve (431), and the valve opening signal device (44) comprises a rotating base (441) arranged on the air inlet seat (42) and a weather vane (442) rotatably connected to the rotating base (441), a signal contact base (443) is provided inside the rotating base (441), a signal contact body (444) is provided on the signal contact base (443), a cantilever (445) is provided on the weather vane (442), and a conductive sheet (446) in contact with the signal contact body (444) is provided on the cantilever (445).

2. A building fire smoke exhaust system according to claim 1, characterized in that: A slider (4441) is slidably connected inside the signal contact base (443), a spring (4442) is fixedly connected between the slider (4441) and the signal contact base (443), and the slider (4441) is fixedly connected to the signal contact body (444).

3. A building fire smoke exhaust system according to claim 2, characterized in that: A cable (4443) is connected between the signal contact body (444) and the electric control valve (431).

4. A building fire smoke exhaust system according to claim 1, characterized in that: A protective cover (46) is provided above the air inlet seat (42) and the air diffuser cover (43).

5. A building fire smoke exhaust system according to claim 4, characterized in that: A clamping seat (45) is fixedly connected to the building platform (5), a slot (451) is provided on the clamping seat (45), a plug-in column (461) is fixedly connected to the protective cover (46), and the plug-in column (461) is movably clamped in the slot (451).

6. A building fire smoke exhaust system according to claim 5, characterized in that: The clamping seat (45) is provided with a locking assembly (47), the locking assembly (47) comprising an adjustment platform (471) movably clamped on the clamping seat (45) and a locking rod (472) fixedly connected to the adjustment platform (471), the plug-in column (461) is provided with a locking hole (462), and the locking rod (472) is movably inserted into the locking hole (462).

7. A building fire smoke exhaust system according to claim 6, characterized in that: A guide rod (473) is fixedly connected inside the clamping seat (45), and the adjustment platform (471) is slidably connected to the guide rod (473).

8. A building fire smoke exhaust system according to claim 6, characterized in that: A screw rod (474) is rotatably connected to the clamping seat (45), and the screw rod (474) is threadedly connected to the adjustment platform (471).

9. A building fire smoke exhaust system according to claim 1, characterized in that: The control device (3) comprises a fire detector (31), an alarm (32) and a controller (33); the fire detector (31) is connected to the alarm (32) and the controller (33) respectively; and the controller (33) is connected to the smoke exhaust fan (2).

10. A building fire smoke exhaust system according to claim 5, characterized in that: The clamping seat (45) is provided with a drainage groove (452).

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