Active heating and smoke exhaust flow guide device

Abstract

The utility model discloses a kind of active warm and ventilate smoke exhaust flow guide device, specifically related to warm and ventilate smoke exhaust technical field, including house body and smoke exhaust flow guide mechanism, the top of the house body is provided with smoke exhaust flow guide mechanism, the smoke exhaust flow guide mechanism includes exhaust box, gas collecting chamber, docking base and flow guide assembly, the smoke exhaust flow guide mechanism is communicated with smoke exhaust shunt passage, the smoke exhaust shunt passage is located in the gas collecting end of each room of house body and is provided with gas collecting chamber, the air inlet below of gas collecting chamber is provided with docking base, and the docking base is installed with flow guide assembly by bolt;In addition, the movement track of limit guide arc plate to docking plate is constrained, ensure that each group of flow guide frame opening angle is consistent, realize the balanced control of the smoke exhaust volume of multiple rooms, avoid the smoke retention problem caused by local wind pressure too large.

Description

Technical Field

[0001] This utility model relates to the field of HVAC smoke exhaust technology, and more specifically, to an active HVAC smoke exhaust diversion device. Background Technology

[0002] Heating, ventilation and air conditioning (HVAC) smoke exhaust is an important component of building HVAC systems related to fire smoke exhaust. It is mainly used to remove indoor smoke in emergency situations such as fires, ensuring the safe evacuation of personnel and fire rescue work. Existing publication number CN119146574A discloses a high-efficiency ventilation and smoke extraction duct device for heating and ventilation systems, including a smoke extraction duct body and a ventilation pipe. A smoke exhaust fan is installed inside the smoke extraction duct body, and a filter screen is installed inside the ventilation pipe to filter impurities. A ventilation component is used to clean impurities adsorbed on the surface of the filter screen, maintaining efficient ventilation and smoke extraction within the ventilation pipe and smoke extraction duct body. Through the ventilation component, the air and smoke within the ventilation duct can be accelerated. Simultaneously, air and smoke blown onto the filter screen surface and pass through the mesh of the filter screen, allowing air to pass through the filter screen and carry away impurities within the mesh. This, combined with the cleaning brush, helps keep the filter screen surface clean, preventing clogging and significantly improving the airflow speed within the ventilation duct. The inventors discovered the following problems with the existing technology during the development of this utility model: However, during the smoke extraction process, a fire may occur in one room. To ensure safety, all smoke extraction ducts are opened. Although this ensures the removal of smoke, the dispersed air sources reduce the airflow to the room where smoke is present, making it more difficult to remove the smoke. Therefore, an active HVAC smoke exhaust diversion device is proposed to address the above problems. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an active HVAC smoke exhaust diversion device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an active HVAC smoke exhaust guiding device, comprising a chamber and a smoke exhaust guiding mechanism. The smoke exhaust guiding mechanism is provided above the chamber and includes an exhaust box, a gas gathering chamber, a docking base, and a guiding component. The exhaust box is connected to a smoke exhaust diversion channel. Each room in the chamber has a gas gathering chamber at its gas collection end. A docking base is provided below the air inlet of the gas gathering chamber, and the guiding component is installed on the docking base by bolts.

[0005] Preferably, the flow guiding assembly includes a docking shell and a flow guiding frame. The flow guiding frame is rotatably connected to both sides of the inner wall of the docking shell at equal distances. The flow guiding frame includes a rotating column and flow guiding blades. Flow guiding blades are provided on both sides of the rotating column, and the flow guiding blades on both sides of the two sets of rotating columns are in contact with each other.

[0006] Preferably, the rotating column is equipped with a rotating shaft at both ends of the docking shell, and a rotating plate is connected to the end of the rotating shaft away from the docking shell. A main connecting plate is rotatably connected to one side of the rotating plate via a shaft.

[0007] Preferably, a docking plate is rotatably connected to one end of the main connecting plate, a limiting guide arc plate is provided on the side of the docking plate away from the main connecting plate, and a driving assembly is provided between the docking shell and the main connecting plate.

[0008] Preferably, the drive assembly includes an electric push rod, the shaft of which is sleeved with a spring, one end of which is connected to a fixing frame, a placement box is installed on the side of the fixing frame, and the pushing end of the electric push rod is movably connected to the rotating plate.

[0009] Preferably, the exhaust box is equipped with an exhaust fan, and the air inlet end of the exhaust fan is respectively provided with a first connecting channel and a second connecting channel. The smoke inlet ends of the first connecting channel and the second connecting channel are connected to the smoke exhaust diversion channel, and the pipes of the first connecting channel and the second connecting channel are provided with air valves.

[0010] Preferably, the exhaust box is located at the air outlet of the exhaust fan and is connected to a first exhaust pipe. A T-shaped pipe is provided at the end of the first exhaust pipe, and a second exhaust pipe is connected below the T-shaped pipe. A movable baffle is provided on the wall of the T-shaped pipe.

[0011] Preferably, the gas-gathering chamber is provided with a trapezoidal flow guide hood, which is specifically square, and the trapezoidal flow guide hood is sealed to the flow guide assembly.

[0012] The technical effects and advantages of this utility model are as follows: Compared with existing technologies, this active HVAC smoke exhaust guiding device uses a servo motor-driven electric push rod and a spring reset structure in its guiding component. The guiding frame, with its guide vanes on the rotating column, adheres to and seals the connecting shell, effectively blocking airflow between rooms and preventing smoke cross-contamination under normal conditions. When the smoke sensor detects a fire signal, the servo motor adjusts the displacement of the electric push rod via pulse control, driving the rotating plate and the main connecting plate to quickly open the guide vanes, forming an unobstructed smoke exhaust channel. The spring's auxiliary reset function ensures that the guiding frame automatically closes in the event of a power outage or equipment malfunction, preventing backflow of smoke. Furthermore, a limiting guide plate constrains the movement trajectory of the connecting plate, ensuring consistent opening and closing angles for each group of guiding frames, achieving balanced control of smoke exhaust volume across multiple rooms and preventing smoke stagnation caused by excessive local wind pressure.

[0013] Compared with existing technologies, this active HVAC smoke exhaust diversion device forms a centralized diversion system through the trapezoidal diversion hood of the gas gathering chamber and the diversion system of the exhaust box, and then diverts the smoke through the first and second exhaust pipes. The square flared structure of the trapezoidal diversion hood can gather the dispersed smoke in the room into a high-speed airflow and spray it directly into the smoke exhaust diversion channel, reducing the residence time of the smoke in the gas gathering chamber. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a top view of the smoke exhaust and diversion mechanism of this utility model.

[0016] Figure 3 This is a schematic diagram of the smoke exhaust and diversion mechanism of this utility model.

[0017] Figure 4 This is a schematic diagram of the flow guiding component of this utility model.

[0018] Figure 5 This is a schematic diagram of the structure of the docking plate of this utility model.

[0019] Figure 6 For the present utility model Figure 5 A schematic diagram of the structure at point A in the middle.

[0020] The attached diagram is labeled as follows: 1. Chamber body; 2. Smoke exhaust guiding mechanism; 3. Smoke exhaust diversion channel; 4. Gas gathering chamber; 5. Docking base; 6. Flow guiding assembly; 7. Exhaust box; 8. First connecting channel; 9. Second connecting channel; 10. First smoke exhaust pipe; 11. T-pipe; 12. Second smoke exhaust pipe; 13. Docking shell; 14. Flow guide frame; 15. Rotating column; 1501. Flow guide blade; 16. Rotating shaft; 17. Rotating plate; 18. Main connecting plate; 19. Drive assembly; 20. Docking plate; 21. Limiting guide arc plate; 22. Electric push rod; 23. Spring; 24. Fixing frame; 25. Placement box; 26. Exhaust fan. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0022] As attached Figures 1 to 6 An active HVAC smoke extraction device is shown, comprising a chamber 1 and a smoke extraction mechanism 2. The smoke extraction mechanism 2 is located above the chamber 1 and includes an exhaust box 7, a gas collection chamber 4, a docking base 5, and a guide assembly 6. The exhaust box 7 is connected to a smoke extraction diversion channel 3. Each room in the chamber 1 has a gas collection chamber 4 at its gas collection end. A docking base 5 is located below the air inlet of the gas collection chamber 4. The guide assembly 6 is bolted to the docking base 5. A fire occurs in a room due to the use of HVAC. At this time, the smoke sensor installed on the flow guide component 6 detects the smoke. After confirming that the corresponding room is a fire, the flow guide component 6 for the corresponding room is opened. At this time, the exhaust fan 26 runs and draws the smoke into the gas collection chamber 4 through the flow guide component 6. The trapezoidal flow guide hood in the gas collection chamber 4 guides the smoke, so that the collected smoke is concentrated and sprayed into the smoke exhaust diversion channel 3. At this time, the speed of smoke transport in the smoke exhaust diversion channel 3 is controlled by adjusting the size of the channel.

[0023] In a preferred embodiment, the flow guiding assembly 6 includes a docking shell 13 and a flow guiding frame 14. The flow guiding frame 14 is rotatably connected to both sides of the inner wall of the docking shell 13 at equal distances. The flow guiding frame 14 includes a rotating column 15 and a flow guiding blade 1501. The flow guiding blade 1501 is provided on both sides of the rotating column 15. The flow guiding blades 1501 on both sides of the two sets of rotating columns 15 are in contact with each other. The docking shell 13 is specifically a square structure. The flow guiding frame 14 installed inside it seals the docking shell 13 through the flow guiding blades 1501 connected to the rotating column 15.

[0024] In a preferred embodiment, the rotating column 15 is installed with rotating shafts 16 at both ends of the docking housing 13. The end of the rotating shaft 16 away from the docking housing 13 is connected to a rotating plate 17. One side of the rotating plate 17 is rotatably connected to a main connecting plate 18 via a shaft.

[0025] In a preferred embodiment, a docking plate 20 is rotatably connected to one end of the main connecting plate 18, and the docking plate 20 is rotatably connected to the main connecting plate 18. Its function is to connect the main connecting plate 18 and the limiting guide arc plate 21, transmitting the movement of the main connecting plate 18 to the limiting guide arc plate 21. Simultaneously, under the action of the limiting guide arc plate 21, the movement trajectory of the docking plate 20 remains stable, ensuring that the flow guide frame 14 can open and close normally each time. The limiting guide arc plate 21 is provided on the side of the docking plate 20 away from the main connecting plate 18. The guide arc plate limits and guides the movement of the docking plate 20, and also restricts the movement range of the docking plate 20, ensuring that the position of the flow guide frame 14 remains unchanged when it is opened or closed, while guiding the docking plate 20 to move along a predetermined trajectory. A drive assembly 19 is provided between the docking housing 13 and the main connecting plate 18.

[0026] In a preferred embodiment, the drive assembly 19 includes an electric push rod 22, wherein the drive end of the electric push rod 22 is a servo motor, which can be precisely controlled by inputting the number of pulses through the controller to control the number of rotations of the motor, thereby controlling the displacement of the lead screw. The shaft of the electric push rod 22 is sleeved with a spring 23, which can assist in resetting when the electric push rod 22 needs to be reset during movement. One end of the spring 23 is connected to a fixing frame 24, and a placement box 25 is installed on the side of the fixing frame 24. The pushing end of the electric push rod 22 is movably connected to the rotating plate 17.

[0027] In a preferred embodiment, an exhaust fan 26 is installed inside the exhaust box 7. The exhaust fan 26 is the core power component inside the exhaust box 7. Its air inlet is connected to the first connecting channel 8 and the second connecting channel 9, respectively, and its air outlet is connected to the first exhaust pipe 10. When the exhaust fan 26 is running, a negative pressure is formed at its air inlet, drawing the flue gas in the exhaust diversion channel 3 into the exhaust box 7 through the first connecting channel 8 and the second connecting channel 9. Then, the flue gas is discharged into the first exhaust pipe 10 through the air outlet, ensuring that the flue gas can be discharged in a timely manner. The air inlet of the exhaust fan 26 is provided with the first connecting channel 8 and the second connecting channel 9, respectively. The smoke inlet of the first connecting channel 8 and the second connecting channel 9 is connected to the smoke exhaust diversion channel 3. The pipes of the first connecting channel 8 and the second connecting channel 9 are equipped with air valves. The first connecting channel 8 and the second connecting channel 9 are pipes that connect the exhaust box 7 and the smoke exhaust diversion channel 3. Their smoke inlet is connected to the smoke exhaust diversion channel 3, and their smoke outlet is connected to the air inlet of the exhaust fan 26. Air valves are installed on the pipes. By adjusting the opening of the air valves, the flow rate of smoke entering the exhaust fan 26 from the smoke exhaust diversion channel 3 can be controlled, thereby realizing the control of the smoke exhaust volume of different rooms and ensuring that the system can flexibly adjust the smoke exhaust strategy according to the fire situation.

[0028] In a preferred embodiment, the exhaust box 7 is connected to the outlet end of the exhaust fan 26 via a first exhaust pipe 10. The first exhaust pipe 10, connected to the outlet end of the exhaust fan 26, is the main channel for discharging the flue gas from the exhaust box 7. A three-way pipe 11 can divert the flue gas to different exhaust paths, improving the emission efficiency of the exhaust system. A three-way pipe 11 is located at the end of the first exhaust pipe 10, and a second exhaust pipe 12 is connected below it. A movable baffle is installed on the pipe wall. The three-way pipe 11 diverts the flue gas from the first exhaust pipe 10 to the end of the first exhaust pipe 10 and the second exhaust pipe 12. Adjusting the position of the movable baffle can control the amount of flue gas diverted to the second exhaust pipe 12, thereby controlling the flue gas emission path and emission volume to adapt to different exhaust needs and environmental conditions. The second exhaust pipe 12 is connected to the bottom of the three-way pipe 11. The second exhaust pipe 12 is another channel for flue gas emission. When it is necessary to discharge flue gas to different locations or to divert it, some flue gas can be discharged through the second exhaust pipe 12 by controlling the three-way pipe 11 and the movable baffle. At this time, even if a large amount of flue gas is discharged, it can still be diverted. The three-way pipe 11 is equipped with a movable baffle on its pipe wall.

[0029] In a preferred embodiment, a trapezoidal guide hood is provided inside the gas-gathering chamber 4. The trapezoidal guide hood is square and is sealed to the guide assembly 6. The main function of the trapezoidal guide hood is to guide the flue gas entering the gas-gathering chamber 4, concentrate the dispersed flue gas, and allow it to be sprayed into the smoke exhaust diversion channel 3 in a certain direction and speed. Through the guiding effect of the trapezoidal guide hood, the efficiency of flue gas collection and transportation is improved, ensuring that the smoke can enter the smoke exhaust diversion channel 3 quickly and smoothly, thereby accelerating the smoke exhaust speed and reducing the residence time of the smoke in the room.

[0030] In this embodiment, the electric push rod 22, spring 23 and smoke sensor are all commercially available devices known to those skilled in the art. They can be customized or selected according to actual needs. Here we are only using them without making any structural or functional improvements, and we will not go into detail here.

[0031] The working process of this utility model is as follows: First, a fire occurs in a room of the building 1 due to the use of HVAC. At this time, the smoke sensor set on the flow guide component 6 detects the smoke. After confirming the fire in the corresponding room, the flow guide component 6 of the corresponding room is opened. At this time, the exhaust fan 26 runs and draws the smoke into the gas collection chamber 4 through the flow guide component 6. The trapezoidal flow guide hood in the gas collection chamber 4 guides the smoke, so that the collected smoke is concentrated and sprayed into the smoke exhaust diversion channel 3. At this time, the speed of smoke transport in the smoke exhaust diversion channel 3 is controlled by adjusting the size of the channel.

[0032] The docking shell 13 is specifically a square structure. The guide frame 14 installed inside it seals the docking shell 13 through the guide blades 1501 connected to the rotating column 15. The trapezoidal guide hood's main function is to guide the flue gas entering the gas collection chamber 4, concentrating the dispersed flue gas so that it can be sprayed into the exhaust diversion channel 3 in a certain direction and speed. Through the guiding effect of the trapezoidal guide hood, the collection and transportation efficiency of the flue gas is improved, ensuring that the smoke can enter the exhaust diversion channel 3 quickly and smoothly, thereby accelerating the exhaust speed and reducing the residence time of the smoke in the room. The docking plate 20 is rotatably connected to the main connecting plate 18. Its function is to connect the main connecting plate 18 and the limiting guide arc plate 21, transmit the movement of the main connecting plate 18 to the limiting guide arc plate 21, and at the same time, under the action of the limiting guide arc plate 21, keep the movement trajectory of the docking plate 20 stable, so that the flow guide 14 can open and close normally each time. The guide arc plate limits and guides the movement of the docking plate 20, and also limits the movement range of the docking plate 20, ensuring that the position of the flow guide 14 remains unchanged when it is opened or closed, and at the same time guides the docking plate 20 to move along the predetermined trajectory. The exhaust fan 26 is the core power component in the exhaust box 7. Its air inlet end is connected to the first connecting channel 8 and the second connecting channel 9 respectively, and its air outlet end is connected to the first exhaust pipe 10. When the exhaust fan When the exhaust fan 26 is running, a negative pressure is formed at its air inlet, drawing the smoke in the smoke diversion channel 3 into the exhaust box 7 through the first connecting channel 8 and the second connecting channel 9. Then, the smoke is discharged into the first smoke exhaust pipe 10 through the air outlet, ensuring that the smoke can be discharged in a timely manner. The first connecting channel 8 and the second connecting channel 9 are pipes that connect the exhaust box 7 and the smoke diversion channel 3. Their smoke inlet ends are connected to the smoke diversion channel 3, and their smoke outlet ends are connected to the air inlet end of the exhaust fan 26. A damper is installed on the pipe body. By adjusting the opening of the damper, the flow rate of smoke entering the exhaust fan 26 from the smoke diversion channel 3 can be controlled, thereby realizing the control of the smoke exhaust volume of different rooms and ensuring that the smoke exhaust strategy can be flexibly adjusted according to the fire situation.

[0033] The main channel for exhausting flue gas from the exhaust box 7 is a three-way pipe 11, which can divert the flue gas to different exhaust paths, improving the emission efficiency of the exhaust system. The three-way pipe 11 diverts the flue gas inside the first exhaust pipe 10 to the end of the first exhaust pipe 10 and the second exhaust pipe 12. By adjusting the position of the movable baffle, the amount of flue gas diverted to the second exhaust pipe 12 can be controlled, thereby controlling the flue gas emission path and emission volume to adapt to different exhaust needs and environmental conditions. The second exhaust pipe 12 is another channel for flue gas emission. When it is necessary to discharge flue gas to different locations or to divert it, the three-way pipe 11 and the movable baffle control the discharge of some flue gas through the second exhaust pipe 12. At this time, even if a large amount of flue gas is discharged, it can still be diverted. The above is the working principle of this active HVAC exhaust diversion device.

Claims

1. An active HVAC smoke exhaust diversion device, comprising a chamber (1) and a smoke exhaust diversion mechanism (2), characterized in that: A smoke exhaust guiding mechanism (2) is provided above the room body (1). The smoke exhaust guiding mechanism (2) includes an exhaust box (7), an air gathering chamber (4), a docking base (5), and a guiding component (6). The exhaust box (7) is connected to a smoke exhaust diversion channel (3). The smoke exhaust diversion channel (3) is located at the air gathering end of each room in the room body (1). An air gathering chamber (4) is provided at the air inlet of the air gathering chamber (4). A docking base (5) is provided below the air inlet of the air gathering chamber (4). The guiding component (6) is installed on the docking base (5) by bolts. The flow guiding assembly (6) includes a docking shell (13) and a flow guide frame (14). The flow guide frame (14) is rotatably connected to both sides of the inner wall of the docking shell (13) at equal distances. The flow guide frame (14) includes a rotating column (15) and a flow guide blade (1501). The flow guide blade (1501) is provided on both sides of the rotating column (15), and the flow guide blades (1501) on both sides of the two sets of rotating columns (15) are in contact with each other.

2. The active HVAC smoke exhaust diversion device according to claim 1, characterized in that: The rotating column (15) has a rotating shaft (16) installed at both ends of the docking shell (13). The rotating shaft (16) is connected to a rotating plate (17) at the end away from the docking shell (13). A main connecting plate (18) is rotatably connected to one side of the rotating plate (17) via a shaft.

3. The active HVAC smoke exhaust diversion device according to claim 2, characterized in that: One end of the main connecting plate (18) is rotatably connected to a docking plate (20). A limiting guide arc plate (21) is provided on the side of the docking plate (20) away from the main connecting plate (18). A driving assembly (19) is provided between the docking shell (13) and the main connecting plate (18).

4. The active HVAC smoke exhaust diversion device according to claim 3, characterized in that: The drive assembly (19) includes an electric push rod (22), the shaft of which is sleeved with a spring (23), one end of which is connected to a fixing frame (24), and a placement box (25) is installed on the side of the fixing frame (24). The pushing end of the electric push rod (22) is movably connected to the rotating plate (17).

5. The active HVAC smoke exhaust diversion device according to claim 1, characterized in that: The exhaust box (7) is equipped with an exhaust fan (26). The air inlet of the exhaust fan (26) is provided with a first connecting channel (8) and a second connecting channel (9). The smoke inlet of the first connecting channel (8) and the second connecting channel (9) are connected to the smoke exhaust diversion channel (3). The pipes of the first connecting channel (8) and the second connecting channel (9) are equipped with air valves.

6. The active HVAC smoke exhaust diversion device according to claim 1, characterized in that: The exhaust box (7) is located at the air outlet of the exhaust fan (26) and is connected to the first exhaust pipe (10). The end of the first exhaust pipe (10) is provided with a three-way pipe (11). The bottom of the three-way pipe (11) is connected to the second exhaust pipe (12). The pipe wall of the three-way pipe (11) is provided with a movable baffle.

7. The active HVAC smoke exhaust diversion device according to claim 1, characterized in that: The gas-gathering chamber (4) is provided with a trapezoidal flow guide hood, which is specifically square and is sealed to the flow guide assembly (6).

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