A common exhaust duct for a residential building

Abstract

The application relates to the technical field of building flue, in particular to a residential building shared exhaust flue, which comprises a first pipeline, an inner cavity is formed in the first pipeline, a flow guide plate and a flow guide block are arranged in the inner cavity, a flow guide groove is formed in the surface of the flow guide plate, an upper end rod is fixed to the upper end of the flow guide plate, a rotating rod is fixed to the lower end of the flow guide plate, an outer protruding block is fixed to one end of the rotating rod, the other end of the rotating rod is fixedly connected to the output end of a driving motor, the upper part of the flow guide plate is inclined to the inner wall of the air pipe, the flow guide plate divides the inner cavity into a main air flue and a branch air flue, an air flue bottom plate is arranged at the bottom of the first pipeline, a second pipeline is arranged above the first pipeline, a bottom ring, a first spring and a top ring are arranged on the upper surfaces of first and second outer plates; the residential building shared exhaust flue can eliminate the phenomenon of smoke and smell stringing, top wind backflow and the like of the exhaust pipe, greatly improves the efficiency of the exhaust flue, and is convenient to install.

Description

Technical Field

[0001] This invention relates to the field of building flues, specifically a shared exhaust duct for residential buildings. Background Technology

[0002] With China's rapid economic growth and accelerated urbanization, cities have attracted a large influx of people, driving residents' demand for a better living environment and improved living standards. Against this backdrop, facing the tension between dense population and limited land resources, the construction of high-rise residential buildings has become a solution that meets the needs of the times. Under this trend, the kitchen, as the core area of ​​home life, is not only related to daily dietary health, but is also one of the main sources of indoor environmental pollution. Therefore, its cleanliness and hygiene have received increasing attention from society.

[0003] In current technology, high-rise residential buildings generally adopt vertical integrated smoke extraction systems. This system works by installing fume extraction equipment in each household's kitchen, which then directs the cooking fumes into a shared vertical duct for the entire building. Finally, the fumes are discharged into the atmosphere through exhaust caps located on the roof. This centralized smoke extraction method effectively solves the problem of potential pollution of fresh air for upper-floor residents caused by direct exhaust of cooking fumes from lower-floor residents. It also has the ability to prevent backflow from strong external winds, thus ensuring air quality and living comfort throughout the entire building.

[0004] However, the centralized smoke exhaust system in the kitchens of high-rise residential buildings still has many problems, such as uneven smoke exhaust between high-rise and low-rise users, backflow of smoke from the top wind, prominent problems of cross-contamination of smoke and odor, and low efficiency of exhaust duct installation. Therefore, further improving and perfecting the kitchen smoke exhaust system is of great practical significance for improving indoor air quality.

[0005] Therefore, this invention proposes a shared exhaust duct for residential buildings to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a shared exhaust duct for residential buildings to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a shared exhaust duct for residential buildings, the shared exhaust duct for residential buildings comprising: a first pipe, an inner cavity formed inside the first pipe, a guide plate and a guide block arranged in the inner cavity, a guide groove formed on the surface of the guide plate, an upper rod fixed to the upper end of the guide plate, a rotating rod fixed to the lower end of the guide plate, an outer protrusion fixed to one end of the rotating rod, and the other end of the rotating rod fixedly connected to the output end of a drive motor, the upper part of the guide plate inclined towards the inner wall of the duct, the guide plate dividing the inner cavity into a main duct and a branch duct, a duct bottom plate arranged at the bottom of the first pipe, and a second pipe arranged above the first pipe;

[0008] The upper surfaces of the first outer plate, the first outer plate, and the second outer plate are provided with a bottom ring, a first spring, and a top ring. The upper end of the top ring is provided with a stop seat. The surfaces of the first outer plate and the second outer plate are provided with slots and holes.

[0009] The connecting plate has a side plate, a moving block, a vertical plate, a pressing block, a first limiting rod, a second spring, and a second limiting block on its surface, and a sliding groove is formed on its surface.

[0010] Preferably, the lower surface of the duct base plate is provided with a bottom duct interface, which is connected to the first pipe. The rotating rod is rotatably connected to the duct base plate, and both ends of the rotating rod are rotatably connected to the first pipe. An outer ring plate is fixed to the surface of the drive motor, and the outer ring plate is fixed to the surface of the first pipe. The output end of the drive motor is connected to the rotating rod through a coupling.

[0011] Preferably, the surface of the outer protrusion is provided with movable balls, and there are several movable balls evenly distributed on the surface of the outer protrusion. The surface of the first pipe is provided with ball grooves, and the movable balls and the ball grooves are adapted to each other.

[0012] Preferably, several guide channels are provided, and the guide channels are equidistantly distributed on the surface of the guide plate. Arc-shaped grooves are provided inside both sides of the first pipe. The outer wall of the upper rod and the inner wall of the arc-shaped groove are slidably connected. The outer wall of the guide plate and the inner wall of the inner cavity are slidably connected. The area of ​​the branch duct is smaller than that of the main duct. The branch duct forms a tube shape that is smaller at the top and larger at the bottom, so that the smoke on the user side rises. The guide block is located directly above the branch duct. The cross-section of the guide block is L-shaped, and its lower corner is rounded.

[0013] Preferably, the first outer plate and the second outer plate are both fixed to the upper end of the first pipe, the first outer plate is located directly below the second outer plate, the bottom ring is fixed to the surface of the first outer plate, the bottom ring is provided in four sets, the four sets of first outer rings are respectively located at the four ends of the surface of the first outer plate, the bottom plate is fixed with a first spring, the upper end of the first spring is fixed with a top ring, the stop seat is provided in two sets, the two sets of stop seats are symmetrically distributed about the central axis of the top ring, and the upper surface of the stop seat is provided with a stop groove.

[0014] Preferably, the insertion holes are provided in four sets, which are located at the four ends of the surfaces of the first outer ring and the second outer ring respectively. The insertion holes are located on the inner side of the bottom ring. The slots are provided in two sets, which are located on both sides of the surfaces of the first outer ring and the second outer ring respectively. The surface of the second outer ring is fixed with an anti-corrosion sealing gasket. The surface of the anti-corrosion sealing gasket is provided with slots and insertion holes, and the inner wall of the insertion hole is provided with a groove.

[0015] Preferably, the connecting plate is fixed to the surface of the first pipe by bolts. The connecting plate is located directly below the slot. There are two sets of side plates, which are located on both sides of the side plate surface. The two sets of side plates are symmetrically distributed about the central axis of the connecting plate. The surface of the side plate is provided with through holes. The outer wall of the first limiting rod and the inner wall of the through hole are slidably connected. A moving block is fixed to the end face of the first limiting rod.

[0016] Preferably, a second spring is sleeved on the surface of the first limiting rod, one end of the second spring is fixedly connected to the side plate, and the other end of the second spring is fixedly connected to the moving block. A vertical plate is fixed to the upper end of the moving block, a second limiting rod is fixed to the surface of the vertical plate, an extrusion plate is fixed to the surface of the vertical plate, and a rubber strip is fixed to the surface of the extrusion plate. Several rubber strips are provided, and the rubber strips are evenly distributed on the surface of the extrusion plate. A slider is provided on the surface of the moving block, and the slider is embedded in the slide groove and slidably connected to the slide groove.

[0017] Preferably, the second pipe has an upper duct interface on its surface, a connecting frame is fixed at the lower end of the second pipe, the upper end of the first pipe can be embedded in the connecting frame, an insert plate and a guide rod are fixed at the bottom of the connecting frame, a concave area is opened at the bottom of the insert plate, and second limiting holes are opened on both sides of the concave area. There are four sets of guide rods, and the four sets of guide rods are respectively located at the four ends of the lower surface of the connecting frame.

[0018] Preferably, the insert plate can be inserted into the slot, the second limiting rod can be inserted into the second limiting hole, the guide rod can be inserted into the guide hole, the top ring and the bottom ring, and a stop block is fixed on the surface of the guide rod. The stop block is elongated and can be embedded in the stop groove. The stop block and the groove are slidably connected. A first limiting hole is opened at the lower end of the guide rod, and the first limiting rod can be inserted into the first limiting hole.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention proposes a shared exhaust duct for residential buildings. By installing a guide plate inside a first duct, the guide plate divides the exhaust duct into a main duct and branch ducts. The upper part of the guide plate slopes towards the inner wall of the first duct, reducing the area of ​​the branch ducts. The branch ducts are shaped like rocket launchers, wider at the bottom and narrower at the top, increasing the upward airflow velocity and improving the smoke flow speed. Furthermore, by utilizing guide blocks in conjunction with the guide plate, the upper end of the branch ducts forms a sharply narrowing tube shape, thereby preventing cross-contamination of smoke and odors and backdraft, thus improving the exhaust duct's efficiency. On the one hand, the ventilation efficiency is improved. On the other hand, by setting components such as a first outer plate, a second outer plate, a connecting plate, a side plate, a moving block, a first limiting rod, a vertical plate, a first spring, and a second limiting rod on the first pipe, and by setting a guide rod and an insert plate at the lower end of the second pipe, the connection efficiency of the first and second pipes is improved. This avoids the problem that the centralized smoke exhaust system for kitchens in high-rise residential buildings still has many problems, such as uneven smoke exhaust between high-rise and low-rise users, backflow of smoke from the top wind, prominent problems of cross-smoke and cross-odor, and low efficiency of exhaust duct installation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a side view of the structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the first outer plate and the second outer plate of the present invention;

[0024] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle;

[0025] Figure 5 This is a schematic diagram of the guide plate structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the top ring structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the connecting plate structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the extrusion plate structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the internal structure of the first pipe of the present invention;

[0030] Figure 10 This is a schematic diagram of the flow guide block structure of the present invention;

[0031] Figure 11 Schematic diagram of the ball bearing groove structure of the present invention;

[0032] Figure 12This is a schematic diagram of the connecting frame structure of the present invention.

[0033] In the diagram: 1. Second duct; 2. Connecting frame; 3. First outer plate; 4. First duct; 5. Air duct bottom plate; 6. Bottom duct interface; 7. Drive motor; 8. Second outer plate; 9. Upper duct interface; 10. Outer protrusion; 11. Anti-corrosion sealing gasket; 12. Slot; 13. First limiting rod; 14. Insertion hole; 15. Groove; 16. Outer ring plate; 17. Rotating rod; 18. Movable ball; 19. Upper rod; 20. Guide plate; 21. Guide groove; 22. Bottom ring; 23. First spring; 24. Top ring; 5. Stop seat; 26. Stop groove; 27. Second limit rod; 28. Vertical plate; 29. ​​Second spring; 30. Moving block; 31. Extrusion plate; 32. Rubber strip; 33. Slide groove; 34. Connecting plate; 35. Side plate; 36. Through hole; 37. Sliding block; 38. Inner cavity; 39. Main air duct; 40. Branch air duct; 41. Arc groove; 42. Guide block; 43. Ball bearing slide groove; 44. Insert plate; 45. Stop block; 46. Second limit hole; 47. Concave area; 48. Guide rod; 49. First limit hole. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0038] Example 1

[0039] Please see Figures 1 to 12 The present invention provides a technical solution: a shared exhaust duct for a residential building, the shared exhaust duct for the residential building includes: a first pipe 4, an inner cavity 38 is opened in the first pipe 4, a guide plate 20 and a guide block 42 are arranged in the inner cavity 38, a guide groove 21 is opened on the surface of the guide plate 20, an upper rod 19 is fixed to the upper end of the guide plate 20, a rotating rod 17 is fixed to the lower end of the guide plate 20, an outer protrusion 10 is fixed to one end of the rotating rod 17, and the other end of the rotating rod 17 is fixedly connected to the output end of the drive motor 7. The upper part of the guide plate 20 is inclined towards the inner wall of the duct. The guide plate 20 divides the inner cavity 38 into a main air duct 39 and a branch air duct 40. A duct bottom plate 5 is arranged at the bottom of the first pipe 4, and a second pipe 1 is arranged above the first pipe 4.

[0040] The upper surfaces of the first outer plate 3 and the second outer plate 8 are provided with a bottom ring 22, a first spring 23 and a top ring 24. The upper end of the top ring 24 is provided with a stop seat 25. The surfaces of the first outer plate 3 and the second outer plate 8 are provided with slots 12 and insertion holes 14. The connecting plate 34 is provided with a side plate 35, a moving block 30, a vertical plate 28, a pressing block, a first limiting rod 13, a second spring 29 and a second limiting block. The surface of the connecting plate 34 is provided with a sliding groove 33.

[0041] Several guide channels 21 are provided, and the guide channels 21 are evenly distributed on the surface of the guide plate 20. Arc-shaped grooves 41 are provided inside both sides of the first pipe 4. The outer wall of the upper rod 19 and the inner wall of the arc-shaped groove 41 are slidably connected. The outer wall of the guide plate 20 and the inner wall of the inner cavity 38 are slidably connected. The area of ​​the branch air duct 40 is smaller than that of the main air duct 39. The branch air duct 40 forms a tube shape that is smaller at the top and larger at the bottom, so that the smoke on the user side rises. The guide block 42 is located directly above the branch air duct. The cross-section of the guide block 42 is L-shaped, and its lower corner is rounded.

[0042] In use, when the indoor fan operates, it draws air from the first-floor kitchen into the first duct 4 through the bottom duct interface. The inclined guide plate 20 makes the branch duct 40 resemble a tube, wider at the bottom than the top, increasing the upward airflow velocity. Upon reaching the outlet, this creates a suction force in the branch duct 40. The main duct 39 is conical on one side of the guide plate 20, creating a Venturi effect. The outlet is located at the widest point of the main duct 39, so the air pressure in the branch duct 40 is greater than that in the main duct 39, thus increasing the air pressure in the main duct. The airflow in duct 39 is obstructed, thus forming an air pocket, which prevents the flue gas in the main duct 39 from flowing back into the branch duct 40. When the flue gas in the branch duct 40 is transported to the upper outlet of the branch duct 40, the outlet is drastically narrowed due to the setting of the guide plate 20 and the guide block 42. This creates a suction force in the main duct 39, which eliminates the obstruction and interference of the air curtain on the lower airflow. At the same time, it also has a certain ejection effect, making the lower exhaust more unobstructed. This eliminates the phenomena of cross-contamination of smoke and odor, and backflow from the wind, and greatly improves the efficiency of the exhaust duct.

[0043] Example 2

[0044] Based on Embodiment 1, a bottom duct interface 6 is provided on the lower surface of the duct base plate 5. The bottom duct interface 6 is connected to the first pipe 4. The rotating rod 17 is rotatably connected to the duct base plate 5. Both ends of the rotating rod 17 are rotatably connected to the first pipe 4. An outer ring plate 16 is fixed on the surface of the drive motor 7. The outer ring plate 16 is fixed to the surface of the first pipe 4. The output end of the drive motor 7 is connected to the rotating rod 17 through a coupling.

[0045] The surface of the outer protrusion 10 is provided with movable balls 18, and there are several movable balls 18. The several movable balls 18 are evenly distributed on the surface of the outer protrusion 10. The surface of the first pipe 4 is provided with ball grooves 43, and the movable balls 18 and the ball grooves 43 are adapted to each other.

[0046] In use, in order to adjust the size of the outlet of the branch duct 40 and thus improve the exhaust efficiency, the drive motor 7 is started. The output end of the drive motor 7 drives the rotating rod 17 to rotate, which in turn drives the guide plate 20 to rotate. The upper rod 19 slides in the arc groove 41, thereby controlling the distance between the upper end of the guide plate 20 and the guide block 42, and adjusting the exhaust intensity of the branch duct 40. The rotating rod 17 is equipped with a movable ball bearing 18 at the bottom end, which works in conjunction with the ball bearing groove 43 to improve the smoothness of the rotation of the rotating rod 17 and prevent jamming. A guide groove 21 is opened on the side of the guide plate 20 facing the branch duct 40 to increase the contact area between the flue gas and the guide plate 20 and increase the guide speed.

[0047] Example 3

[0048] Based on Embodiment 2, the first outer plate 3 and the second outer plate 8 are both fixed to the upper end of the first pipe 4. The first outer plate 3 is located directly below the second outer plate 8. The bottom ring 22 is fixed to the surface of the first outer plate 3. The bottom ring 22 is provided with four sets. The four sets of first outer rings are respectively located at the four ends of the surface of the first outer plate 3. The bottom plate is fixed with a first spring 23. The upper end of the first spring 23 is fixed with a top ring 24. The stop seat 25 is provided with two sets. The two sets of stop seats 25 are symmetrically distributed about the central axis of the top ring 24. The upper surface of the stop seat 25 is provided with a stop groove 26.

[0049] The socket 14 is provided in four sets, and the four sets of socket 14 are respectively located at the four ends of the surface of the first outer ring and the second outer ring. The socket 14 is located inside the bottom ring 22. The slot 12 is provided in two sets, and the two sets of slot 12 are respectively located on both sides of the surface of the first outer ring and the second outer ring. The surface of the second outer ring is fixed with an anti-corrosion sealing gasket 11. The surface of the anti-corrosion sealing gasket 11 is provided with slot 12 and socket 14. The inner wall of the socket 14 is provided with groove 15.

[0050] In use, when installing the first pipe 4 and the second pipe 1, the two extrusion plates 31 are first manually pushed to bring them closer together. At this time, the second spring 29 is compressed and stores elastic potential energy. Then, the guide rod 48 is inserted into the corresponding insertion hole 14, and the corresponding insertion plate 44 is inserted into the corresponding insertion slot 12. As the guide rod 48 is continuously inserted, the set stop block 45 will be embedded in the stop groove 26, thereby causing the top ring 24 to move downward, causing the first spring 23 to be compressed and store elastic potential energy, and giving the top ring 24 a force. The upward thrust, as the guide rod 48 continues to move downward, moves the first limiting hole 49 of the guide rod 48 to the same horizontal line as the first limiting rod 13. At this time, the force on the extrusion plate 31 is released. Under the rebound action of the second spring 29, the first limiting rod 13 will be inserted into the first limiting hole 49, and the second limiting rod 27 will be inserted into the second limiting hole 46. This realizes the installation of the second pipe 1. At the same time, under the rebound action of the first spring 23, the limiting operation of the two limiting rods is coordinated to improve the stability of the second pipe 1 and prevent loosening.

[0051] The connecting plate 34 is fixed to the surface of the first pipe 4 by bolts. The connecting plate 34 is located directly below the slot 12. There are two sets of side plates 35. The two sets of side plates 35 are located on both sides of the surface of the side plate 35. The two sets of side plates 35 are symmetrically distributed about the central axis of the connecting plate 34. The surface of the side plate 35 is provided with through holes 36. The outer wall of the first limiting rod 13 and the inner wall of the through hole 36 are slidably connected. The end face of the first limiting rod 13 is fixed with a moving block 30.

[0052] A second spring 29 is sleeved on the surface of the first limiting rod 13. One end of the second spring 29 is fixedly connected to the side plate 35, and the other end of the second spring 29 is fixedly connected to the moving block 30. A vertical plate 28 is fixed to the upper end of the moving block 30. A second limiting rod 27 is fixed to the surface of the vertical plate 28. A pressing plate 31 is fixed to the surface of the vertical plate 28. A rubber strip 32 is fixed to the surface of the pressing plate 31. Several rubber strips 32 are provided and are evenly distributed on the surface of the pressing plate 31. A slider 37 is provided on the surface of the moving block 30. The slider 37 is embedded in the sliding groove 33 and is slidably connected to the sliding groove 33.

[0053] In order to improve the stability of the moving block 30 during use, a slider 37 and a groove 33 are provided. The slider 37 is embedded in the groove 33 to provide guidance and support for the movement of the moving block 30. Several rubber strips 32 are provided to improve hand comfort when pushing the extrusion plate 31 and improve the stability during operation.

[0054] Working Principle: In actual use, when the indoor fan is in operation, the gas from the first-floor kitchen is sent into the first duct 4 through the bottom duct interface 6. The deflector plate 20 is inclined, making the branch duct 40 resemble a tube with a smaller top and a larger bottom, increasing the upward airflow velocity. When it reaches the outlet, it forms a suction force in the branch duct 40. The main duct 39 is inverted cone shape on one side of the deflector plate 20, thus creating a Venturi effect. The outlet is located at the widest point of the main duct 39, so the air pressure in the branch duct 40 is greater than that in the main duct 39. This causes the airflow in the main duct 39 to be obstructed, forming an air pocket, thereby blocking the airflow in the main duct 39. The flue gas from pipe 9 flows back into branch duct 40. When the flue gas in branch duct 40 is transported to the upper outlet of branch duct 40, the outlet narrows sharply due to the setting of guide plate 20 and guide block 42, forming a main duct 39. The suction force eliminates the obstruction and interference of the air curtain on the lower airflow, and at the same time, it has a certain ejection effect to make the lower exhaust more unobstructed, thereby eliminating the phenomena of cross-contamination of smoke, odor, and backflow from the top wind, and greatly improving the efficiency of the exhaust duct. On the other hand, when installing the first pipe 4 and the second pipe 1, the two extrusion plates 31 are first pushed manually to bring them closer together. At this time, the first pipe 4... The second spring 29 is compressed, storing elastic potential energy. Then, the guide rod 48 is inserted into the corresponding insertion hole 14, and the corresponding insertion plate 44 is inserted into the corresponding slot 12. As the guide rod 48 continues to be inserted, the stop block 45 is embedded in the stop groove 26, causing the top ring 24 to move downwards. This compresses the first spring 23, storing elastic potential energy and providing an upward thrust to the top ring 24. As the guide rod 48 continues to move downwards, the first limiting hole 49 of the guide rod 48 is moved to the same horizontal line as the first limiting rod 13. At this point, the force on the pressing plate 31 is released. Under the rebound action of the second spring 29, the first limiting rod 13 will be inserted into the first limiting hole 49, and the second limiting rod 27 will be inserted into the second limiting hole 46, thereby realizing the installation of the second pipe 1. At the same time, under the rebound action of the first spring 23, the limiting operation of the two limiting rods will improve the stability of the second pipe 1 and prevent loosening. However, there are still many problems with the centralized smoke exhaust system in the kitchen of high-rise residential buildings, such as uneven smoke exhaust between high-rise and low-rise users, backflow of smoke from the top wind, prominent problems of cross-smoke and cross-odor, and low efficiency of exhaust duct installation.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shared exhaust duct for residential buildings, characterized in that: The shared exhaust duct of the residential building includes: a first pipe (4), an inner cavity (38) is provided in the first pipe (4), a guide plate (20) and a guide block (42) are provided in the inner cavity (38), a guide groove (21) is provided on the surface of the guide plate (20), an upper rod (19) is fixed at the upper end of the guide plate (20), a rotating rod (17) is fixed at the lower end of the guide plate (20), an outer protrusion (10) is fixed at one end of the rotating rod (17), and the other end of the rotating rod (17) is fixedly connected to the output end of the drive motor (7). The upper part of the guide plate (20) is inclined towards the inner wall of the air duct. The guide plate (20) divides the inner cavity (38) into a main air duct (39) and a branch air duct (40). A bottom plate (5) is provided at the bottom of the first pipe (4), and a second pipe (1) is provided above the first pipe (4). The upper surfaces of the first outer plate (3) and the second outer plate (8) are provided with a bottom ring (22), a first spring (23) and a top ring (24). The upper end of the top ring (24) is provided with a stop seat (25). The surfaces of the first outer plate (3) and the second outer plate (8) are provided with slots (12) and holes (14). The connecting plate (34) has a side plate (35), a moving block (30), a vertical plate (28), a pressing block, a first limiting rod (13), a second spring (29), and a second limiting block on its surface. The connecting plate (34) has a groove (33) on its surface. The connecting plate (34) is fixed to the surface of the first pipe (4) by bolts. The connecting plate (34) is located directly below the slot (12). There are two sets of side plates (35). The two sets of side plates (35) are located on both sides of the surface of the side plate (35). The two sets of side plates (35) are symmetrically distributed about the central axis of the connecting plate (34). The surface of the side plate (35) is provided with through holes (36). The outer wall of the first limiting rod (13) and the inner wall of the through hole (36) are slidably connected. The end face of the first limiting rod (13) is fixed with a moving block (30). The surface of the first limiting rod (13) is fitted with a second spring (29). One end of the second spring (29) is fixedly connected to the side plate (35), and the other end of the second spring (29) is fixedly connected to the moving block (30). The upper end of the moving block (30) is fixed with a vertical plate (28). The surface of the vertical plate (28) is fixed with a second limiting rod (27). The surface of the vertical plate (28) is fixed with a pressing plate (31). The surface of the pressing plate (31) is fixed with rubber strips (32). There are several rubber strips (32). Several rubber strips (32) are evenly distributed on the surface of the pressing plate (31). The surface of the moving block (30) is provided with a slider (37). The slider (37) is embedded in the groove (33) and is slidably connected with the groove (33). The second pipe (1) has an upper duct interface (9) on its surface. The lower end of the second pipe (1) is fixed with a connecting frame (2). The upper end of the first pipe (4) can be embedded in the connecting frame (2). The bottom of the connecting frame (2) is fixed with a plate (44) and a guide rod (48). The bottom of the plate (44) has a concave area (47). The two sides of the concave area (47) have second limiting holes (46). The guide rod (48) has four sets. The four sets of guide rods (48) are located at the four ends of the lower surface of the connecting frame (2).

2. A shared exhaust duct for residential buildings according to claim 1, characterized in that: The bottom surface of the duct base plate (5) is provided with a bottom duct interface (6), which is connected to the first pipe (4). The rotating rod (17) is rotatably connected to the duct base plate (5), and both ends of the rotating rod (17) are rotatably connected to the first pipe (4). The surface of the drive motor (7) is fixed with an outer ring plate (16), which is fixed to the surface of the first pipe (4). The output end of the drive motor (7) is connected to the rotating rod (17) through a coupling.

3. A shared exhaust duct for residential buildings according to claim 1, characterized in that: The surface of the outer protrusion (10) is provided with movable balls (18), and there are several movable balls (18). The several movable balls (18) are evenly distributed on the surface of the outer protrusion (10). The surface of the first pipe (4) is provided with ball grooves (33), and the movable balls (18) and the ball grooves (33) are compatible.

4. A shared exhaust duct for residential buildings according to claim 1, characterized in that: The guide groove (21) is provided in several places. The guide groove (21) is equidistantly distributed on the surface of the guide plate (20). The inner sides of the first pipe (4) are provided with arc grooves (41). The outer wall of the upper rod (19) and the inner wall of the arc groove (41) are slidably connected. The outer wall of the guide plate (20) and the inner wall of the inner cavity (38) are slidably connected. The area of ​​the branch air duct (40) is smaller than that of the main air duct (39). The branch air duct (40) forms a tube shape with a small top and a large bottom, so that the smoke on the user side rises. The guide block (42) is located directly above the branch air duct. The cross section of the guide block (42) is L-shaped, and its lower corner is rounded.

5. A shared exhaust duct for residential buildings according to claim 1, characterized in that: The first outer plate (3) and the second outer plate (8) are both fixed to the upper end of the first pipe (4). The first outer plate (3) is located directly below the second outer plate (8). The bottom ring (22) is fixed to the surface of the first outer plate (3). The bottom ring (22) is provided in four sets. The four sets of first outer rings are located at the four ends of the surface of the first outer plate (3). The bottom plate is fixed with a first spring (23). The upper end of the first spring (23) is fixed with a top ring (24). The stop seat (25) is provided in two sets. The two sets of stop seats (25) are symmetrically distributed about the central axis of the top ring (24). The upper surface of the stop seat (25) is provided with a stop groove (26).

6. A shared exhaust duct for residential buildings according to claim 1, characterized in that: The insertion hole (14) is provided in four sets, and the four sets of insertion holes (14) are located at the four ends of the surface of the first outer ring and the second outer ring respectively. The insertion hole (14) is located inside the bottom ring (22). The slot (12) is provided in two sets, and the two sets of slots (12) are located on both sides of the surface of the first outer ring and the second outer ring respectively. The surface of the second outer ring is fixed with an anti-corrosion sealing gasket (11). The surface of the anti-corrosion sealing gasket (11) is provided with slots (12) and insertion holes (14). The inner wall of the insertion hole (14) is provided with grooves (15).

7. A shared exhaust duct for residential buildings according to claim 1, characterized in that: The insert plate (44) can be inserted into the slot (12), the second limiting rod (27) can be inserted into the second limiting hole (46), the guide rod (48) can be inserted into the guide hole, the top ring (24) and the bottom ring (22), the surface of the guide rod (48) is fixed with a stop block (45), the stop block (45) is long and can be embedded in the stop groove (26), the stop block (45) and the groove (15) are slidably connected, the lower end of the guide rod (48) is provided with a first limiting hole (49), the first limiting rod (13) can be inserted into the first limiting hole (49).

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