Partition type fire smoke exhaust fan box and working method

Abstract

The application relates to the technical field of smoke exhaust fan equipment, in particular to a partition type fire-fighting smoke exhaust fan box and a working method, wherein the fan bodies are arranged in groups, annular air ducts are connected around the smoke exhaust pipes, and partition assemblies are arranged in the smoke exhaust pipes; the partition assembly comprises a middle partition net part and a sealing plate part which is transmissionally connected to the two ends of the partition net part; the partition net part has a first state of facing the air inlet and a second state of facing the air duct opening; in the first state, the smoke exhaust pipe takes in air into the fan body on the same side through the partition net part; when the partition net part is rotated to the second state, the smoke exhaust pipe takes in air into the fan body on the same group far side; a first temperature sensor is arranged in the air inlet; when the temperature values sensed by the first temperature sensors at the two ends differ by more than a predetermined range, the partition net part is triggered to rotate and switch to the first state or the second state, so that automatic switching of air exhaust is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smoke exhaust fan equipment, and particularly relates to a partition type fire smoke exhaust fan box and a working method. BACKGROUND

[0002] The smoke exhaust fan is generally arranged on the ground floor or the top floor platform of a building and is used for connecting the distribution of the air supply and exhaust ducts in the building to exhaust air outside. The fire smoke exhaust fan needs to adopt a high-temperature resistant structure plate, and the motor and the transmission components need to be partitioned and arranged outside, and has the ability of continuously operating for more than 100 minutes under the condition of exhausting high-temperature smoke of more than 280 DEG C, which is used for exhausting high-temperature fire smoke when a fire occurs. In the prior art, for example, the centrifugal fire smoke exhaust fan disclosed in Chinese patent document CN218207117U includes a base, a convenient mounting and dismounting assembly, a driving motor, a centrifugal fan and an electromagnetic partition assembly. The fire smoke exhaust fan box disclosed in Chinese patent document CN202158013U includes a casing, a fan and a motor mounted in the casing, and the casing is provided with an air inlet and an air outlet on the two sides, respectively. A sound-absorbing panel is arranged in the casing, and a flow collector is arranged at the two ends of the fan impeller. The motor is mounted on the casing and is fixed on the base together with the casing. The motor is connected with the fan through a belt, and a belt cover is arranged outside the belt.

[0003] However, the above existing fan boxes are all designed in a single-inlet and single-outlet manner, so that the fireproof temperature resistance of the single fan is very high. The probability of a fire occurring in different intervals of the same building at the same time is not high. When a fire occurs in only a single interval, the single fan connected with the interval is still continuously operated at high temperature, which obviously causes problems such as wear and deformation, reduction of efficiency and the like of the single fan, so that the air supply and exhaust ducts of the corresponding interval cannot be normally and efficiently exhausted, and the continuous high-temperature smoke exhaust also affects the service life of the single fan. SUMMARY

[0004] Therefore, the present application aims to provide a partition type fire smoke exhaust fan box and a working method to solve the problems of high fireproof temperature resistance of the single-inlet and single-outlet fan box, hidden dangers and influence on the service life of the fan caused by the continuous high-temperature operation of the fan.

[0005] In order to achieve the above purpose, the present application provides a partition type fire smoke exhaust fan box, which comprises a fan body, an air inlet and an air outlet are arranged on the fan body, and a smoke exhaust duct is connected to the air inlet:

[0006] The fan bodies are arranged in pairs, the air inlets of the fan bodies in the same group are oppositely arranged, and are used for connecting the smoke exhaust ducts of different intervals. The smoke exhaust ducts are connected in a ring shape, and a wind channel opening is arranged at the connection between the ring-shaped wind channel and the smoke exhaust duct;

[0007] The smoke exhaust duct is provided with a partition assembly, the partition assembly comprises a middle partition net part and a sealing plate part connected to both ends of the partition net part, the partition net part is rotationally connected in the smoke exhaust duct, the partition net part has a first state facing the air inlet and a second state facing the air duct opening, in the first state, the partition net part is in a ventilation state, and the air duct opening is closed by the sealing plate part, so that the smoke exhaust duct supplies air to the fan body on the same side through the partition net part, when the partition net part rotates to the second state, the sealing plate part is driven to open, so that the annular air duct is in communication with the smoke exhaust duct, and the partition net part is in a closed state, and the smoke exhaust duct supplies air to the fan body on the same group of the far side.

[0008] A first temperature sensor is arranged in the air inlet to sense the temperature at the air inlet, and when the temperature values sensed by the first temperature sensors at both ends differ by more than a predetermined range, the partition net part is triggered to rotate and switch to the first state or the second state.

[0009] Preferably, the fan bodies in the group are arranged in parallel, and the smoke exhaust duct vertically penetrates the annular air duct.

[0010] Preferably, the partition net part comprises a partition net frame, a first partition net arranged on the partition net frame, and a first sealing plate rotationally connected to the partition net frame, in the first state, the partition assembly is in an H shape, the first sealing plate is rotated perpendicular to the first partition net, so that the smoke exhaust duct supplies air to the fan body on the same side through the first partition net.

[0011] Preferably, the sealing plate part comprises a second sealing plate slidingly connected to the air duct opening, the second sealing plate is arranged in a split manner, both ends of the partition net frame are rotationally connected to the second sealing plate, and when the partition net frame rotates, the second sealing plate slides to open and close the air duct opening, in the second state, the partition assembly rotates to a Z shape standing on the side, and the second sealing plate slides to open the air duct opening, so that the smoke exhaust duct supplies air to the fan body on the same group of the far side.

[0012] Preferably, the partition net frame is connected with an expansion plate at both ends, one end of the expansion plate is rotationally connected to the second sealing plate, and the other end is rotationally connected to the first sealing plate, when the partition net frame rotates, the expansion plate performs expansion and contraction movements to drive the first sealing plate to rotate and open and close.

[0013] Preferably, a second partition net is arranged at the air duct opening, and the second sealing plate is provided with bristles, when the second sealing plate slides, the bristles scrape the second partition net.

[0014] Preferably, the second sealing plate is provided with a dust collection groove at the bottom end.

[0015] Preferably, second temperature sensors are arranged in the annular air ducts on both sides of the smoke exhaust duct, when the temperature values sensed by the second temperature sensors on both sides differ by more than a predetermined range, the partition net part is triggered to rotate, so that the smoke exhaust duct switches to supply air to the annular air duct on different sides.

[0016] The application further provides a working method of the partition type fire-fighting smoke exhaust fan box, comprising the following steps:

[0017] The fan bodies are arranged in pairs, the air inlets on the fan bodies in the same group are oppositely arranged, and are used for connecting the smoke exhaust pipes in different sections; the screen part has a first state facing the air inlets and a second state facing the air duct openings; in the first state, the screen part is in a ventilation state, and the air duct openings are closed by the sealing plate part, so that the smoke exhaust pipes introduce air into the fan bodies on the same side through the screen part; in the second state, the sealing plate part slides, so that the annular air duct is in communication with the smoke exhaust pipes, and the screen part is in a closed state, and the smoke exhaust pipes introduce air into the fan bodies on the far side of the same group.

[0018] When the temperature values sensed by the first temperature sensors at both ends differ by more than a predetermined range, the screen part is triggered to rotate and switch to the first state or the second state.

[0019] Preferably, the annular air ducts on both sides of the smoke exhaust pipes are respectively provided with second temperature sensors, and when the temperature values sensed by the second temperature sensors on both sides differ by more than a predetermined range, the screen part is triggered to rotate, so that the smoke exhaust pipes switch to introduce air into the annular air ducts on different sides.

[0020] The application has the following beneficial effects: the fan bodies are arranged in pairs, the annular air ducts are connected around the smoke exhaust pipes, the smoke exhaust pipes are provided with a partition assembly, the partition assembly comprises a screen part in the middle and a sealing plate part connected to both ends of the screen part, the screen part has a first state facing the air inlets and a second state facing the air duct openings, in the first state, the smoke exhaust pipes introduce air into the fan bodies on the same side through the screen part, in the second state, the screen part is rotated to the second state, and the smoke exhaust pipes introduce air into the fan bodies on the far side of the same group, the first temperature sensors are arranged in the air inlets, and when the temperature values sensed by the first temperature sensors at both ends differ by more than a predetermined range, the screen part is triggered to rotate and switch to the first state or the second state, so that the air is automatically switched back and forth, compared with the single-in single-out fan box, the fire-fighting temperature resistance requirement of the single fan is high, and the single fan is prone to wear, deformation, efficiency reduction and service life reduction under continuous high-temperature operation, and the normal and efficient air exhaust of the air supply and exhaust pipes is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only illustrate the application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0022] Figure 1 It is a schematic diagram of the overall structure of the application;

[0023] Figure 2 is a structure schematic view of the exhaust duct of the present application; Figure 1 is an enlarged schematic view of A in the present application;

[0024] Figure 3 is a structure schematic view of the exhaust duct of the present application when air is introduced into the fan body of the same group far side;

[0025] Figure 4 is a structure schematic view of the exhaust duct of the present application; Figure 3 is an enlarged schematic view of B in the present application;

[0026] Figure 5 is a structure schematic view of the exhaust duct of the present application when air is introduced into the annular air duct of different sides;

[0027] Figure 6 is a structure schematic view of the partition net part of the present application;

[0028] Figure 7 is a structure schematic view of the telescopic plate of the present application;

[0029] Figure 8 is a structure schematic view of the first sealing plate of the present application;

[0030] Figure 9 is a structure schematic view of the first sealing plate of the present application when rotating parallel to the first partition net;

[0031] Figure 10 is a structure schematic view of the belt wheel mechanism and transmission gear of the present application;

[0032] Figure 11 is a structure schematic view of the second sealing plate of the present application.

[0033] In the figure, the marks are:

[0034] 1, fan body; 2, air inlet; 3, air outlet; 4, exhaust duct; 5, annular air duct; 6, air duct opening; 7, partition assembly; 8, partition net part; 81, partition net frame; 82, first partition net; 83, first sealing plate; 831, telescopic head; 84, telescopic plate; 9, sealing plate part; 91, second sealing plate; 92, dust collection groove; 10, first temperature sensor; 11, motor; 12, cover; 13, belt wheel mechanism; 14, transmission gear; 15, rotating gear; 16, rack; 17, second partition net; 18, brush; 19, second temperature sensor. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application is further described in detail below in combination with specific embodiments.

[0036] It should be noted that the technical terms or scientific terms used in the present application should be the general meanings understood by those skilled in the art unless otherwise defined. The "first", "second" and similar words used in the present application do not represent any order, number or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, which may change accordingly when the absolute position of the described object changes.

[0037] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A partition type fire smoke exhaust fan box, comprising a fan body 1, the fan body 1 is provided with an air inlet 2 and an air outlet 3, the air inlet 2 is connected with a smoke exhaust duct 4, the fan bodies 1 are arranged in pairs, the air inlets 2 on the fan bodies 1 in the same group are oppositely arranged, used for connecting smoke exhaust ducts 4 in different intervals, the smoke exhaust ducts 4 are connected in a ring around the connection of the ring-shaped air duct 5 and the smoke exhaust duct 4, the ring-shaped air duct 5 is provided with an air duct opening 6 at the connection, the smoke exhaust duct 4 is provided with a partition assembly 7, the partition assembly 7 comprises a middle partition net part 8 and a sealing plate part 9 connected to both ends of the partition net part 8, the partition net part 8 is rotatably connected in the smoke exhaust duct 4, the partition net part 8 has a first state facing the air inlet 2 and a second state facing the air duct opening 6, in the first state, the partition net part 8 is in a ventilation state, and the air duct opening 6 is closed by the sealing plate part 9, so that the smoke exhaust duct 4 is ventilated to the fan body 1 on the same side through the partition net part 8, when the partition net part 8 is rotated to the second state, the sealing plate part 9 is opened, so that the ring-shaped air duct 5 is in communication with the smoke exhaust duct 4, and at the same time the partition net part 8 is in a closed state, the smoke exhaust duct 4 is ventilated to the fan body 1 on the far side in the same group, the air inlet 2 is provided with a first temperature sensor 10 for sensing the temperature at the air inlet 2, when the temperature values sensed by the first temperature sensors 10 at both ends differ by more than a predetermined range, the partition net part 8 is triggered to rotate and switch to the first state or the second state.

[0038] The application is based on the existing smoke exhaust system and the structure design of the fire smoke exhaust fan box, comprising a fan body 1, an air inlet 2 and an air outlet 3 are arranged on the fan body 1, and a smoke exhaust duct 4 is connected to the air inlet 2, which is different from the existing multiple fan bodies 1 arranged in a centralized or scattered manner, each fan body 1 is simply connected to the smoke exhaust duct 4 through the air inlet 2, that is, a single-in single-out structure design, in the application, the fan bodies 1 are arranged in pairs, the air inlets 2 of the fan bodies 1 in the same group are oppositely arranged and used for connecting smoke exhaust ducts 4 in different intervals, the smoke exhaust ducts 4 are connected in a ring shape through a ring-shaped air duct 5, the ring-shaped air duct 5 is provided with an air duct opening 6 at the connection position of the ring-shaped air duct 5 and the smoke exhaust duct 4, and a partition assembly 7 is arranged in the smoke exhaust duct 4, the partition assembly 7 comprises a middle screen part 8 and a sealing plate part 9 which is connected to both ends of the screen part 8 in a transmission mode, the screen part 8 is rotatably connected to the smoke exhaust duct 4, the screen part 8 has a first state facing the air inlet 2 and a second state facing the air duct opening 6, specifically, in the first state, as shown in Figure 1 、 Figure 2 , the screen part 8 is in a ventilation state and the air duct opening 6 is closed through the sealing plate part 9, so that the smoke exhaust duct 4 takes in air into the fan body 1 on the same side through the screen part 8, when the screen part 8 is rotated to the second state, as shown in Figure 3 、 Figure 4 、 Figure 5As shown, the synchronous transmission sealing plate part 9 is opened to make the annular air duct 5 communicate with the smoke exhaust duct 4, and the screen part 8 is in a closed state, so that the end of the smoke exhaust duct 4 connected to the same side of the air inlet 2 is blocked by the screen part 8, and the end of the smoke exhaust duct 4 connected to the air duct opening 6 far away is open, the smoke exhaust duct 4 blows air into the same group of fan bodies 1 far away, and the first temperature sensor 10 provided in the air inlet 2 is used to sense the temperature at the air inlet 2. In the normal exhaust or ventilation state, the exhaust air of the smoke exhaust duct 4 in different intervals in the same building generally does not have too much temperature difference, and when the temperature values sensed by the first temperature sensors 10 at both ends differ by more than a predetermined range, it is likely that a fire occurs in the interval where the smoke exhaust duct 4 blows air. Then, the screen part 8 is switched to the first state or the second state, for example, initially, the screen part 8 is in the first state, the high-temperature fire smoke blows air into the same side of the fan body 1, until the temperature values sensed by the first temperature sensors 10 differ by more than a predetermined range, and the screen part 8 is switched to the second state, so that the high-temperature fire smoke blows air into the fan body 1 far away along the annular air duct 5, until a period of time elapses, the temperature values sensed by the first temperature sensors 10 again differ by more than a predetermined range, and the screen part 8 is switched to the first state again. If the first temperature sensors 10 on both sides sense high temperature without exceeding the predetermined range, it means that fires occur in different intervals, and there is no need to switch the smoke exhaust fan. Thus, by increasing the blocking space formed by the annular air duct 5 and the smoke exhaust duct 4, the automatic switching of exhaust air is realized. Compared with the single-in single-out fan box, the requirement of fire-fighting temperature resistance of the single fan is high, and the single fan is easy to be worn and deformed, the efficiency is reduced, and the service life is reduced under the continuous high-temperature operation, and the like. The normal and efficient exhaust of the air supply and exhaust pipe is facilitated.

[0039] In the embodiments of the present application, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 The fan bodies 1 are arranged in parallel, the fan bodies 1 can adopt the structure design of the existing centrifugal fan, including a fan casing, a impeller rotatingly arranged in the fan casing, an electric motor 11 arranged between the parallel fan bodies 1, the electric motor 11 being connected to the impeller through a belt transmission, a cover shell 12 being arranged on the belt, and the electric motor 11 and the transmission mechanism being externally blocked, meeting the fire-fighting requirements, the smoke exhaust duct 4 vertically penetrating the annular air duct 5, and the annular air duct 5 closely surrounding the outside of the group of fan bodies 1, forming a group-connection blocking type fire-fighting smoke exhaust fan box.

[0040] In the embodiments of the present application, as shown in Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 、 Figure 8 ,Figure 9 As shown in the figure, the screen part 8 includes a screen frame 81, a first screen 82 arranged on the screen frame 81, and a first sealing plate 83 rotatably connected to the screen frame 81. Specifically, as shown in the figure, Figure 2 As shown in the figure, the screen frame 81 is rotatably connected to the smoke exhaust duct 4 through a rotating shaft at the bottom end of the screen frame 81. The rotating shaft is driven to rotate by internal or external components such as a driving motor, a rotating cylinder, etc. In the first state, as shown in the figure, Figure 1 、 Figure 2 As shown in the figure, the partition assembly 7 is in the shape of H. The screen frame 81 is parallel to the air inlet 2. The first sealing plate 83 is rotated to be perpendicular to the first screen 82, so that the smoke exhaust duct 4 can smoothly enter the air fan body 1 on the same side through the first screen 82. The first screen 82 plays a role of blocking smoke and dust impurities, avoiding the suction of large-particle impurities and the abrasion of the impeller.

[0041] In the embodiment of the present application, as shown in the figure, Figure 1 、 Figure 2 、 Figure 10 、 Figure 11 As shown in the figure, the sealing plate part 9 includes a second sealing plate 91 slidably connected to the air duct opening 6. The second sealing plate 91 is arranged in a split manner. The screen frame 81 is rotatably connected to the second sealing plate 91 at both ends. When the screen frame 81 rotates, the second sealing plate 91 slides to open and close the air duct opening 6. In the second state, as shown in the figure, Figure 3 、 Figure 4 、 Figure 5 As shown in the figure, the partition assembly 7 is in the shape of Z standing on the side. The screen frame 81 is inclined to face the air duct opening 6. At the same time, the second sealing plate 91 slides to open the air duct opening 6, so that the smoke exhaust duct 4 can enter the air fan body 1 on the same group of the far side.

[0042] Specifically, as shown in the figure, Figure 1 、 Figure 2 、 Figure 10 As shown in the figure, the smoke exhaust duct 4 is provided with a transmission part for transmitting the relative sliding opening and closing of the second sealing plate 91. For example, it includes adjacent belt wheel mechanisms 13. The belt wheel mechanisms 13 are connected with transmission gears 14. The adjacent transmission gears 14 are connected in meshing. The top end of the second sealing plate 91 is slidably connected to the smoke exhaust duct 4 and connected with the belt wheel mechanisms 13 through a connecting rod. The screen frame 81 is rotatably connected to one of the second sealing plates 91 arranged in a split manner at both ends, driving the second sealing plate 91 to slide, thereby driving the belt wheel mechanisms 13 to move through the connecting rod, driving the transmission gears 14 to rotate, thereby driving the adjacent belt wheel mechanisms 13 to move, driving the other second sealing plate 91 arranged in a split manner to automatically slide in the opposite direction. As another embodiment of the present application, the top end of the second sealing plate 91 is slidably connected to the smoke exhaust duct 4. The top end of the second sealing plate 91 on the same side is directly fixedly connected through a connecting rod, thereby driving the second sealing plate 91 to slide synchronously.

[0043] In the embodiment of the present application, as shown in the figure, Figure 1 、Figure 2 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, telescopic plates 84 are connected to both ends of the partition frame 81. One end of the telescopic plate 84 is rotatably connected to the second sealing plate 91, and the other end is driven to the first sealing plate 83. When the partition frame 81 rotates, the telescopic plate 84 performs telescopic movement, which is used to drive the first sealing plate 83 to rotate open and close.

[0044] Specifically, such as Figure 7 As shown, the telescopic plate 84 can adopt a multi-section telescopic structure. As the partition frame 81 rotates, one end of the telescopic plate 84 deflects at different angles relative to the second sealing plate 91. Furthermore, due to the changing distance between the side end of the partition frame 81 and the second sealing plate 91, the telescopic plate 84 moves in a telescopic motion, always maintaining a closed connection between both ends of the partition frame 81 and the second sealing plate 91. Figure 6 As shown, a rotating gear 15 is rotatably connected to the bottom end of the partition frame 81. Racks 16 are meshed with both sides of the rotating gear 15. The bottom end of the first sealing plate 83 is fixedly connected to the rotating gear 15. Specifically, the racks 16 slide along the bottom end of the partition frame 81 and are arranged along the length of the bottom end of the partition frame 81, meshing with each rotating gear 15. One end of the rack 16 is fixedly connected to a segment of the telescopic plate 84 near the end of the partition frame 81. As the partition assembly 7 rotates, it forms an H-shape. When the telescopic plate 84 retracts to its position, it pushes the rack 16 to move laterally, causing the rotating gear 15 to rotate. This causes each first sealing plate 83 to rotate perpendicular to the first partition 82, and then to rotate laterally in a Z-shape as the partition assembly 7 rotates. When the telescopic plate 84 extends to its position, it pulls the rack 16 to move laterally, causing the rotating gear 15 to rotate in the opposite direction. This causes each first sealing plate 83 to rotate parallel to the first partition 82, thus closing the partition section 8.

[0045] Preferred, such as Figure 8 , Figure 9 As shown, the first sealing plate 83 is bent. When each first sealing plate 83 rotates parallel to the first partition net 82, adjacent first sealing plates 83 are stacked in sequence to better seal the partition net 8. The two ends of the first sealing plate 83 can be elastically connected to telescopic heads 831, so that when the first sealing plate 83 rotates, the telescopic heads 831 that pop out can better scrape the first partition net 82. When the first sealing plate 83 rotates to close, the impurities attached to the first partition net 82 are scraped off and collected at the bottom of the partition net frame 81, which is conducive to the automatic cleaning of the first partition net 82, and especially avoids a large number of floating dust particles in the fire smoke from attaching and affecting the ventilation efficiency.

[0046] In embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 11As shown, the second sealing plate 91 is provided with a second mesh 17 at the wind channel opening 6, and the second sealing plate 91 is provided with a brush 18 at the side end, and the second mesh 17 is scraped by the brush 18 when the second sealing plate 91 slides.

[0047] Preferably, the second sealing plate 91 is provided with a dust collecting groove 92 at the bottom end, which is used for collecting impurity particles attached to the second mesh 17, facilitating automatic cleaning of the second mesh 17, and avoiding the influence of a large amount of floating dust particles in the fire smoke on the exhaust efficiency.

[0048] In the embodiment of the present application, as shown in the drawings, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, the annular wind channel 5 on both sides of the smoke exhaust pipe 4 is respectively provided with a second temperature sensor 19, and when the temperature values sensed by the two second temperature sensors 19 differ by more than a predetermined range, the mesh part 8 is triggered to rotate to switch the smoke exhaust pipe 4 to the annular wind channel 5 on the different side to inhale air, that is, it is still in the second state, but the annular wind channel on the different side is used to inhale air, on the one hand, to avoid overheating of the annular wind channel 5 on one side, and on the other hand, to facilitate reverse flushing of the second mesh 17 when the annular wind channel on the different side is used to inhale air, until the temperature values sensed by the first temperature sensor 10 are within the predetermined range after the fire is extinguished, the mesh part 8 no longer rotates to switch the state, at this time, the first state can be manually switched to and cleaned and maintained, and in addition, when the temperature sensed by the first temperature sensor 10 and the second temperature sensor 19 exceeds the threshold value, the fan is automatically turned off to stop exhaust.

[0049] The present application also provides a working method of the partition type fire-fighting smoke exhaust fan box, comprising the following steps:

[0050] The fan bodies 1 are arranged in pairs, the air inlets 2 on the fan bodies 1 in the same group are oppositely arranged, are used to connect the smoke exhaust pipes 4 in different intervals, the mesh part 8 has a first state facing the air inlet 2 and a second state facing the wind channel opening 6, in the first state, the mesh part 8 is in a ventilation state, and the wind channel opening 6 is closed by the sealing plate part 9, so that the smoke exhaust pipe 4 inhales air into the fan body 1 on the same side through the mesh part 8, in the second state, the mesh part 8 rotates to drive the sealing plate part 9 to slide, so that the annular wind channel 5 is in communication with the smoke exhaust pipe 4, and at the same time, the mesh part 8 is in a closed state, and the smoke exhaust pipe 4 inhales air into the fan body 1 on the far side in the same group;

[0051] When the temperature values sensed by the first temperature sensors 10 at both ends differ by more than a predetermined range, the mesh part 8 is triggered to rotate to switch to the first state or the second state.

[0052] In the embodiment of the present application, the second temperature sensors 19 are arranged in the annular air ducts 5 on both sides of the flue duct 4. When the temperature values sensed by the second temperature sensors 19 on both sides differ by more than a preset range, the screen part 8 is triggered to rotate, so as to switch the flue duct 4 to draw air from the annular air duct 5 on the different side.

[0053] It should be understood by those of ordinary skill in the art that the above discussion of any of the embodiments is merely exemplary and is not intended to suggest the scope of the present application (including the claims) is limited to these examples; under the concept of the present application, the above embodiments or technical features among different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0054] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any one of the claims recited below in allowed form is intended to cover any and all alternatives, modifications, and variations falling within the scope of the claims.

Claims

1. A partitioned fire smoke exhaust fan box, comprising a fan body (1), an air inlet (2) and an air outlet (3) are arranged on the fan body (1), and a smoke exhaust duct (4) is connected to the air inlet (2), characterized in that: the fan bodies (1) are arranged in groups, the air inlets (2) of the fan bodies (1) in the same group are oppositely arranged and used for connecting smoke exhaust ducts (4) in different sections, annular air ducts (5) are connected around the smoke exhaust ducts (4), and air duct openings (6) are arranged at the connection positions of the annular air ducts (5) and the smoke exhaust ducts (4); a partition assembly (7) is arranged in the smoke exhaust duct (4), the partition assembly (7) comprises a middle screen part (8) and sealing plate parts (9) which are connected to both ends of the screen part (8) in a transmission mode, the screen part (8) is rotatably connected to the smoke exhaust duct (4), the screen part (8) has a first state of facing the air inlet (2) and a second state of facing the air duct opening (6), in the first state, the screen part (8) is in a ventilation state, and the air duct opening (6) is closed by the sealing plate part (9), so that the smoke exhaust duct (4) takes in air into the fan body (1) on the same side through the screen part (8), when the screen part (8) is rotated to the second state, the sealing plate part (9) is driven to be opened, so that the annular air duct (5) is communicated with the smoke exhaust duct (4), and at the same time, the screen part (8) is in a closed state, and the smoke exhaust duct (4) takes in air into the fan body (1) on the far side in the same group; a first temperature sensor (10) is arranged in the air inlet (2) and used for sensing the temperature at the air inlet (2), when the temperature values sensed by the first temperature sensors (10) at both ends differ by more than a predetermined range, the screen part (8) is triggered to be rotated and switched to the first state or the second state. The fan bodies (1) in the group are arranged in parallel, and the smoke exhaust duct (4) penetrates the annular air duct (5) vertically.

2. The partition type fire smoke exhaust fan box according to claim 1, wherein The screen part (8) comprises a screen frame (81), a first screen (82) arranged on the screen frame (81), and a first sealing plate (83) rotatably connected to the screen frame (81), in the first state, the partition assembly (7) is in an H shape, the first sealing plate (83) is rotated perpendicularly to the first screen (82), so that the smoke exhaust duct (4) takes in air into the fan body (1) on the same side through the first screen (82).

3. The partition type fire smoke exhaust fan box according to claim 1, characterized in that, The sealing plate part (9) comprises a second sealing plate (91) which is slidably connected to the air duct opening (6), the second sealing plate (91) is oppositely arranged, the screen frame (81) is rotatably connected to the second sealing plate (91) at both ends, and the screen frame (81) drives the second sealing plate (91) to slide when the screen frame (81) is rotated, so as to open and close the air duct opening (6), in the second state, the partition assembly (7) is in a Z shape which stands on the side, the second sealing plate (91) slides, so that the air duct opening (6) is opened, and the smoke exhaust duct (4) takes in air into the fan body (1) on the far side in the same group.

4. The partition type fire smoke exhaust fan box according to claim 3, characterized in that, ​ 5. The partition type fire smoke exhaust fan box according to claim 4, wherein The expansion plate (84) is rotatably connected to the second sealing plate (91) at one end and is drivingly connected to the first sealing plate (83) at the other end, and when the screen frame (81) rotates, the expansion plate (84) performs expansion and contraction movement to drive the first sealing plate (83) to rotate and open and close.

6. The partition type fire smoke exhaust fan box according to claim 4, wherein The second screen (17) is arranged at the air duct opening (6), and the second sealing plate (91) is provided with bristles (18) at the side end, and when the second sealing plate (91) slides, the bristles (18) are used to scrape and brush the second screen (17).

7. The partition type fire smoke exhaust fan box according to claim 6, wherein The second sealing plate (91) is provided with a dust collection groove (92) at the bottom end.

8. The partition type fire smoke exhaust fan box according to claim 1, wherein The annular air duct (5) on both sides of the smoke exhaust duct (4) is respectively provided with a second temperature sensor (19), and when the temperature values sensed by the second temperature sensors (19) on both sides differ by more than a preset range, the screen part (8) is triggered to rotate to switch the smoke exhaust duct (4) to draw air from the annular air duct (5) on the different side.

9. The working method of the partition type fire smoke exhaust fan box according to any one of claims 1-8, characterized in that, The following steps are included: The fan bodies (1) are arranged in pairs, the air inlets (2) on the fan bodies (1) in the same group are oppositely arranged, and are used to connect different sections of the smoke exhaust duct (4); the screen part (8) has a first state facing the air inlet (2) and a second state facing the air duct opening (6); in the first state, the screen part (8) is in a ventilation state, and the air duct opening (6) is closed by the sealing plate part (9), so that the smoke exhaust duct (4) draws air into the fan body (1) on the same side through the screen part (8); in the second state, the sealing plate part (9) slides to make the annular air duct (5) communicate with the smoke exhaust duct (4), and the screen part (8) is in a closed state, and the smoke exhaust duct (4) draws air into the fan body (1) on the same group and on the far side; When the temperature values sensed by the first temperature sensors (10) at both ends differ by more than a predetermined range, the screen part (8) is triggered to rotate to switch to the first state or the second state.

10. The method of claim 9, wherein the method further comprises: The annular air duct (5) on both sides of the smoke exhaust duct (4) is respectively provided with a second temperature sensor (19), and when the temperature values sensed by the second temperature sensors (19) on both sides differ by more than a preset range, the screen part (8) is triggered to rotate to switch the smoke exhaust duct (4) to draw air from the annular air duct (5) on the different side.

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