CN116839141A

CN116839141A - Building ventilation structure

Info

Publication number: CN116839141A
Application number: CN202310799462.3A
Authority: CN
Inventors: 杜超; 刘宏达; 刘春明; 井帅; 张超; 高增伟
Original assignee: Shaanxi Aerospace Tongyu Construction Engineering Co ltd
Current assignee: Shaanxi Aerospace Tongyu Construction Engineering Co ltd
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2023-10-03

Abstract

The application relates to a building ventilation structure, which relates to the field of building ventilation equipment, and comprises a ventilation device, wherein the ventilation device comprises an exhaust pipe, a driving assembly and an ash cleaning assembly; the cross section of the inner peripheral wall of the exhaust pipe is circular; the driving assembly comprises a rotating piece, wherein the rotating piece is positioned in the exhaust pipe and is connected with the exhaust pipe in a rotating way along the circumferential direction of the inner wall of the exhaust pipe; the ash removal assembly comprises a rotating rod and a brush, wherein the rotating rod is fixedly connected to the rotating piece, the brush is fixedly connected to the rotating rod, and the brush is in contact with the inner wall of the exhaust pipe. The application can reduce the dust adhering to the inner wall of the air pipe so as to reduce the occurrence of air pipe blockage or air pipe exhaust efficiency reduction.

Description

Building ventilation structure

Technical Field

The application relates to the field of building ventilation equipment, in particular to a building ventilation structure.

Background

The building mainly includes house, factory building, market etc. wherein the factory building is in the work progress, whether can produce a large amount of dust in the follow-up factory building needs to consider, if can produce a large amount of dust, then need add ventilation structure in the factory building to in order to discharge the air in the factory building, after discharging the air in the factory building, to the exhaust dust filter treatment can.

In the related art, referring to fig. 1, a ventilation structure of a factory building mainly includes an air duct 11 and a fan 12, and the fan 12 is installed in the air duct 11 or at a port of the air duct 11 to accelerate the circulation of air flow in the air duct 11 through the fan 12.

For the related art, when the dust content of the dust passing through the air duct is large, the dust and the dust are easy to adhere to the inner wall of the air duct, and when the dust adhered to the inner wall of the air duct is excessive, the air duct is possibly blocked or the air exhaust efficiency of the air duct is reduced.

Disclosure of Invention

In order to reduce the phenomenon that dust adheres to the inner wall of an air pipe so as to reduce the occurrence of air pipe blockage or air pipe exhaust efficiency reduction, the application provides a building ventilation structure.

The application provides a building ventilation structure which adopts the following technical scheme:

the building ventilation structure comprises a ventilation device, wherein the ventilation device comprises an exhaust pipe, a driving assembly and an ash cleaning assembly;

the cross section of the inner peripheral wall of the exhaust pipe is circular;

the driving assembly comprises a rotating piece, wherein the rotating piece is positioned in the exhaust pipe and is connected with the exhaust pipe in a rotating way along the circumferential direction of the inner wall of the exhaust pipe;

the ash removal assembly comprises a rotating rod and a brush, wherein the rotating rod is fixedly connected to the rotating piece, the brush is fixedly connected to the rotating rod, and the brush is in contact with the inner wall of the exhaust pipe.

Through adopting above-mentioned technical scheme, when clearing up exhaust pipe inner wall, drive the dwang by the rotating member and rotate, the brush just can rotate along with the dwang, the brush just can clear up exhaust pipe inner wall at the in-process that rotates; the rotating piece is arranged to drive the hairbrush to rotate, so that the inner wall of the exhaust pipe can be cleaned, dust adhesion to the inner wall of the exhaust pipe is reduced, and the exhaust pipe can be ensured to exhaust smoothly, and the condition that the ventilation efficiency of the exhaust pipe is reduced is avoided.

Optionally, the air conditioner further comprises a turbulence assembly, wherein the turbulence assembly is positioned in the exhaust pipe, the turbulence assembly comprises a rotating ring and blades, the rotating ring is rotationally connected with the exhaust pipe, and the rotating ring is perpendicular to the axial direction of the inner wall of the exhaust pipe along the rotating axis of the exhaust pipe; the blades are fixedly connected to the rotating ring.

Through adopting above-mentioned technical scheme, the swivel becket can drive the blade and rotate along exhaust pipe pivoted in-process, and the blade can be disturbed the air current in the exhaust pipe for the air current in the exhaust pipe can have the flow of equidirectional, and it compares in the air current of straight line type, can make the air current collide with the exhaust pipe inner wall from equidirectional, produces the impact force to the impurity of exhaust pipe inner wall adhesion, reduces impurity adhesion at the exhaust pipe inner wall.

Optionally, at least two ventilation devices are arranged, and one section of two exhaust pipes in the two ventilation devices is communicated; the two exhaust pipes are vertically arranged, and the turbulence assembly is positioned at the communication position of the two exhaust pipes.

By adopting the technical scheme, the turbulence assembly is arranged at the communication position of the two exhaust pipes, so that the air flow in the two exhaust pipes can be disturbed by the turbulence assembly at the same time; moreover, because two exhaust pipes are vertically arranged, when air flow enters the other exhaust pipe from one exhaust pipe, the air flow can generate an irregular movement track, and the flow direction of the air flow can be further disturbed by matching with the turbulence effect of the turbulence assembly, so that the collision probability of the air flow and the inner wall of the exhaust pipe is increased, and the adhesion of impurities on the inner wall of the exhaust pipe is reduced.

Optionally, the exhaust duct further comprises a driving device, wherein the driving device is connected between the rotating ring and the rotating piece, and the rotating ring drives the rotating piece to rotate along the exhaust duct through the driving device.

Through adopting above-mentioned technical scheme, drive the rotation piece by the swivel becket through drive arrangement and rotate along the exhaust pipe, can realize the linkage between swivel becket and the rotation piece, need not to increase other power supply alright drive rotation piece rotation.

Optionally, the driving device comprises a first bevel gear and two transmission assemblies;

the first bevel gear is coaxially and fixedly connected to the rotating ring;

the transmission assembly comprises a second bevel gear, a first transmission shaft, a third bevel gear, a fourth bevel gear, a second transmission shaft and a transmission gear;

the second bevel gear is meshed with the first bevel gear;

the first transmission shaft is rotatably connected to the exhaust pipe; one end of the first transmission shaft is coaxially and fixedly connected with the second bevel gear, and the other end of the first transmission shaft is coaxially and fixedly connected with the third bevel gear;

the fourth bevel gear is meshed with the third bevel gear;

the second transmission shaft is rotationally connected to the exhaust pipe and is perpendicular to the first transmission shaft; one end of the second transmission shaft is coaxially and fixedly connected with the fourth bevel gear, and the other end of the second transmission shaft is coaxially and fixedly connected with the transmission gear;

the rotating parts are toothed rings, and the transmission gears in each transmission assembly are respectively meshed with the rotating parts in one driving assembly.

By adopting the technical scheme, the rotating ring drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear meshed with the first bevel gear to rotate, the second bevel gear drives the third bevel gear to rotate through the first transmission shaft, the third bevel gear drives the fourth bevel gear to rotate through the second transmission shaft, the fourth bevel gear drives the transmission gear meshed with the fourth bevel gear to rotate, and the transmission gear drives the rotating piece meshed with the transmission gear to rotate; through setting up first bevel gear and two drive assembly, need not other power supply, alright drive the rotation piece rotation in two exhaust pipes simultaneously.

Optionally, the air conditioner further comprises an accelerating fan, wherein the accelerating fan is located in one of the exhaust pipes, and an air outlet of the accelerating fan faces the blades so as to drive the blades to rotate along with the rotating ring.

Through adopting above-mentioned technical scheme, when air current gets into another exhaust pipe from an exhaust pipe, can drive the rotation of swivel becket through driving vane, simultaneously, the acceleration fan can further provide power for the rotation of swivel becket when accelerating the air current flow.

Optionally, the exhaust pipe comprises a spoiler, and the inner wall of the spoiler is wavy along the length direction of the exhaust pipe.

Through adopting above-mentioned technical scheme, when the air current passes through the different positions of spoiler section, because the increase or the reduction of spoiler section internal diameter need face, consequently, the air current can be incessantly outwards spread or inwards gather together, and its flow direction that can continuous change air current for the air current takes place the collision of different angles at the exhaust pipe inner wall, can further reduce the dust and adhere at the exhaust pipe inner wall.

Optionally, the brush is at least in contact with the inner wall of the spoiler.

By adopting the technical scheme, the hairbrush is contacted with the inner wall of the spoiler, so that impurities adhered to the inner wall of the spoiler can be cleaned; in addition, the brush can further change the trend of the air flow in the spoiler in the rotating process of the spoiler, so that the impurities can be further reduced to be adhered to the inner wall of the spoiler.

Optionally, the ash removal assembly further comprises an ash scraping sheet, wherein the ash scraping sheet is fixedly connected to the rotating rod and is in contact with the inner wall of the exhaust pipe.

Through adopting above-mentioned technical scheme, will scrape grey piece and exhaust pipe inner wall contact, can further improve the clearance degree to the exhaust pipe inner wall.

Optionally, the ash scraping sheet is a flexible sheet.

Through adopting above-mentioned technical scheme, through establishing the ash scraping sheet into flexible piece, can reduce the ash scraping sheet and appear the dead condition of card along exhaust pipe inner wall pivoted in-process.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the rotating piece is arranged to drive the hairbrush to rotate, so that the inner wall of the exhaust pipe can be cleaned, dust is reduced to adhere to the inner wall of the exhaust pipe, the exhaust pipe can be ensured to exhaust smoothly, and the occurrence of the condition that the ventilation efficiency of the exhaust pipe is reduced can be ensured;

2. the rotating member is driven by the rotating ring to rotate along the exhaust pipe through the driving device, so that the linkage between the rotating ring and the rotating member can be realized, and the rotating member can be driven to rotate without adding other power sources;

3. the accelerating wind can accelerate the airflow and simultaneously further provide power for the rotation of the rotating ring.

Drawings

FIG. 1 is a schematic view of a duct structure in the background of the application;

FIG. 2 is a schematic overall structure of an embodiment of the present application;

FIG. 3 is a view of an exhaust duct in a cut-away state, for illustrating an internal structure of the exhaust duct, according to an embodiment of the present application;

FIG. 4 is a schematic diagram of the drive assembly and ash removal assembly according to an embodiment of the application;

FIG. 5 is a schematic view illustrating a spoiler assembly according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a transmission assembly in accordance with an embodiment of the present application;

fig. 7 is an enlarged view of a portion a in fig. 6.

Reference numerals illustrate: 11. an air duct; 12. a blower; 2. an exhaust pipe; 21. a straight pipe section; 211. a first mount; 212. a second mounting base; 22. a spoiler section; 3. a drive assembly; 31. a guide ring; 311. a rotating groove; 312. an avoidance groove; 32. a rotating member; 4. an ash removal component; 41. a rotating lever; 42. a brush; 43. scraping ash sheets; 5. a spoiler assembly; 51. a support shaft; 52. a rotating ring; 53. a blade; 6. accelerating a fan; 7. a first bevel gear; 8. a transmission assembly; 81. a first drive shaft; 82. a second drive shaft; 83. a second bevel gear; 84. a third bevel gear; 85. a fourth bevel gear; 86. a transmission gear.

Detailed Description

The application is described in further detail below with reference to fig. 2-7.

The embodiment of the application discloses a building ventilation structure. Referring to fig. 2, 3 and 4, the building ventilation structure comprises a ventilation device, a spoiler assembly 5 and a driving device; the ventilation device is equipped with two at least, and ventilation device is preferred to be two in this embodiment, and ventilation device is including exhaust pipe 2 and deashing subassembly 4, and vortex subassembly 5 is located one of them ventilation device's exhaust pipe 2, and vortex subassembly 5 passes through drive arrangement and drives deashing subassembly 4 operation to clear up exhaust pipe 2 inner wall.

Referring to fig. 3, the exhaust duct 2 has a circular cross section perpendicular to the axis direction thereof, the exhaust duct 2 includes a straight duct section 21 and a spoiler section 22, the cross section of the straight duct section 21 parallel to the axis direction thereof is rectangular, and the cross section of the spoiler section 22 parallel to the axis direction thereof is wavy.

Referring to fig. 3 and 4, the ventilation device further comprises a driving assembly 3; the driving assembly 3 comprises a guide ring 31 and a rotating member 32, the guide ring 31 is annular, the guide ring 31 is coaxially welded to the inner wall of the straight pipe section 21, an annular rotating groove 311 is coaxially formed in the inner peripheral wall of the guide ring 31, the rotating member 32 is a toothed ring, the rotating member 32 is preferably an outer toothed ring in this embodiment, the rotating member 32 is coaxially located in the rotating groove 311, the outer peripheral wall of the rotating member 32 is in contact with the inner wall of the rotating groove 311, and the rotating member 32 can rotate in the rotating groove 311, here, in order to ensure that the rotating member 32 can rotate in the rotating groove 311, tolerance fit between the large diameter of the rotating member 32 and the diameter of the rotating groove 311 is clearance fit, so that the situation that the rotating member 32 is jammed in the rotating groove 311 can be avoided, and the rotating member 32 can be ensured to rotate in the rotating groove 311.

Referring to fig. 3 and 4, in the present embodiment, three ash cleaning assemblies 4 are provided, and the three ash cleaning assemblies 4 are uniformly distributed along the rotation circumferential direction of the rotating member 32; the ash cleaning component 4 comprises a rotating rod 41, a brush 42 and an ash scraping sheet 43, wherein the rotating rod 41 is arranged parallel to the axis of the straight pipe section 21, one end of the rotating rod 41 is welded to the rotating member 32, the other end of the rotating rod 41 extends into the spoiler section 22, the brush 42 is adhered to the rotating member 32 through glue, and the brush 42 is at least contacted with the inner wall of the spoiler section 22, namely, the brush 42 can be arranged in the straight pipe section 21 to be contacted with the inner wall of the straight pipe section 21; the scraping sheet 43 is a flexible sheet, and the material of the scraping sheet 43 is preferably a flexible material such as rubber or silica gel, in this embodiment, the material of the scraping sheet is preferably rubber, that is, the scraping sheet 43 is a rubber sheet; one end of the ash scraping sheet 43 is fixedly adhered to the rotating rod 41 through glue, and the other end of the ash scraping sheet is contacted with the inner wall of the spoiler 22 so as to scrape impurities on the inner wall of the spoiler 22.

Referring to fig. 3, two exhaust pipes 2 are vertically arranged, wherein the end wall of a straight pipe section 21 of one exhaust pipe 2 is welded to the side wall of the straight pipe section 21 of the other exhaust pipe 2, the two exhaust pipes 2 are communicated, and a spoiler assembly 5 is positioned in one exhaust pipe 2 and is close to the port of the straight pipe section 21 of the other exhaust pipe 2; in order to facilitate the distinction of the two straight pipe sections 21, the straight pipe section 21 to which the spoiler 5 is not mounted is named a first straight pipe section 21 and the straight pipe section 21 to which the spoiler 5 is mounted is named a second straight pipe section 21.

Referring to fig. 3 and 5, the spoiler assembly 5 includes a support shaft 51, a rotating ring 52 and blades 53, the support shaft 51 is welded to the inner walls of the exhaust ducts 2, the axis of the support shaft 51 is simultaneously perpendicular to the axes of the two exhaust ducts 2, and the rotating ring 52 is coaxially rotatably connected to the outer circumferential wall of the support shaft 51 through a bearing such that the rotation axis of the rotating ring 52 coincides with the axis of the support shaft 51; the blades 53 are welded to the outer peripheral wall of the rotating ring 52, the blades 53 are provided in plurality, and the blades 53 are uniformly distributed along the circumferential direction of the rotating ring 52.

Referring to fig. 5, in order to rotate the acceleration rotation ring 52, an acceleration fan 6 is fixedly connected to the inner wall of the first straight pipe section 21 through screws, and an air outlet of the acceleration fan 6 faces to one side of the blade 53 so that the blade 53 is driven to rotate by the acceleration fan 6.

Referring to fig. 5, 6 and 7, the driving device includes a first bevel gear 7 and two transmission assemblies 8; the first bevel gear 7 is coaxially welded to the end wall of the rotating ring 52 to synchronously rotate with the rotating ring 52; the transmission assembly 8 comprises a first transmission shaft 81, a second transmission shaft 82, a second bevel gear 83, a third bevel gear 84, a fourth bevel gear 85 and a transmission gear 86, in this embodiment, all bevel gears are bevel gears with a pitch of 45 ° so as to achieve a 90 ° change in the transmission direction when the two bevel gears are engaged.

Referring to fig. 4, 6 and 7, a first mounting seat 211 and a second mounting seat 212 are welded on the inner wall of the second straight pipe section 21, the first transmission shaft 81 is rotatably connected to the first mounting seat 211, and the second transmission shaft 82 is rotatably connected to the second mounting seat 212; one end of the first transmission shaft 81 is coaxially welded to the second bevel gear 83, and the other end is coaxially welded to the third bevel gear 84; one end of the second transmission shaft 82 is coaxially welded to the fourth bevel gear 85, and the other end is coaxially welded to the transmission gear 86; the second bevel gear 83 meshes with the first bevel gear 7, and the third bevel gear 84 meshes with the fourth bevel gear 85; the guide ring 31 is internally provided with an avoidance groove 312, the avoidance groove 312 is communicated with the rotating groove 311, the transmission gear 86 is positioned in the avoidance groove 312 and meshed with the rotating member 32, and the second transmission shaft 82 penetrates through the guide ring 31 and can rotate along the guide ring 31 so as to drive the rotating member 32 to rotate by the second transmission shaft 82 through driving the transmission gear 86 to rotate.

Referring to fig. 5, 6 and 7, in order to facilitate distinguishing between the two transmission assemblies 8, the transmission assembly 8 for driving the rotation member 32 in the first straight tube section 21 to rotate is the first transmission assembly 8, and the transmission assembly 8 for driving the rotation member 32 in the second straight tube section 21 to rotate is the second transmission assembly 8; the first drive shaft 81 in the first drive assembly 8 is parallel to the axis of the second straight tube section 21, and the second drive shaft 82 in the first drive assembly 8 is parallel to the axis of the first straight tube section 21; the first transmission shaft 81 in the second transmission assembly 8 is parallel to the axis of the first straight pipe section 21, and the second transmission shaft 82 in the second transmission assembly 8 is parallel to the axis of the second straight pipe section 21, thereby completing the force transmission operation.

The implementation principle of the building ventilation structure provided by the embodiment of the application is as follows: the air flow is introduced from the exhaust pipe 2 comprising the first straight pipe section 21 and exhausted from the exhaust pipe 2 comprising the second straight pipe section 21, the air flow drives the blades 53 to rotate, and the blades 53 drive the rotating ring 52 to rotate, so that a certain disturbance is generated on the air flow in the second straight pipe section 21.

After the air flow enters the spoiler 22, the pipe wall of the spoiler 22 is wavy, so that when the air flow in the spoiler 22 flows from the larger inner diameter of the spoiler 22 to the smaller inner diameter of the spoiler 22, the air flow converges towards the inner side of the spoiler 22; when the air flow in the spoiler 22 flows from the smaller inner diameter of the spoiler 22 to the larger inner diameter of the spoiler 22, the air flow can diffuse to the outer side of the spoiler 22, so that the air flow is in a continuously fluctuating state in the spoiler 22 and is not in a linear flowing state, and therefore, the air flow can collide with the inner wall of the spoiler 22 from different directions at different angles so as to blow off impurities adhered to the inner wall of the exhaust pipe 2, and the adhering quantity of the impurities on the inner wall of the exhaust pipe 2 is reduced.

The accelerating fan 6 further drives the blades 53 to increase the rotation speed of the rotating ring 52, the first bevel gear 7 fixed on the rotating ring 52 rotates along with the rotating ring 52, the second bevel gear 83 meshed with the first bevel gear 7 rotates along with the first bevel gear 7, the second bevel gear 83 drives the third bevel gear 84 and the fourth bevel gear 85 meshed with the third bevel gear 84 to rotate through the first transmission shaft 81, the fourth bevel gear 85 drives the transmission gear 86 and the rotating member 32 to rotate through the second transmission shaft 82, the ash cleaning assembly 4 rotates along with the rotating member 32, the rotating member 32 drives the rotating rods 41 to rotate, the hairbrush 42 fixedly connected to the rotating rods 41 and the flexible ash scraping sheet 43 synchronously rotate along with the rotating rods 41, and the hairbrush 42 and the ash scraping sheet 43 perform double scraping operation on the inner wall of the exhaust pipe 2 so as to perform more thorough cleaning operation on the inner wall of the exhaust pipe 2.

In the application, the presence of the accelerating fan 6 can accelerate the airflow in the exhaust pipe 2 comprising the first straight pipe section 21 to flow into the exhaust pipe 2 comprising the second straight pipe section 21, and simultaneously, the disturbance force of the turbulence component 5 can be accelerated; namely, the accelerating fan 6 can accelerate the rotation of the rotating ring 52, and the rotating ring 52 drives the ash cleaning component 4 to move through the transmission component 8, so that the cleaning frequency of the ash cleaning component 4 can be increased due to the existence of the accelerating fan 6, and the accelerating fan 6, the turbulent flow component 5 and the ash cleaning component 4 can exist as a structure for disturbing airflow, wherein the ash cleaning component 4 directly acts on the inner wall of the exhaust pipe 2 to clean impurities, and the cleaning cleanliness of the inner wall of the exhaust pipe 2 can be effectively improved through multiparty cooperation.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. The building ventilation structure is characterized by comprising a ventilation device, wherein the ventilation device comprises an exhaust pipe (2), a driving assembly (3) and an ash cleaning assembly (4);

the cross section of the inner peripheral wall of the exhaust pipe (2) is circular;

the driving assembly (3) comprises a rotating piece (32), the rotating piece (32) is positioned in the exhaust pipe (2), and the rotating piece (32) is rotationally connected with the exhaust pipe (2) along the circumferential direction of the inner wall of the exhaust pipe (2);

the ash removal assembly (4) comprises a rotating rod (41) and a brush (42), the rotating rod (41) is fixedly connected with the rotating piece (32), the brush (42) is fixedly connected with the rotating rod (41), and the brush (42) is in contact with the inner wall of the exhaust pipe (2).

2. The building ventilation structure according to claim 1, further comprising a turbulence assembly (5), wherein the turbulence assembly (5) is located in the exhaust duct (2), the turbulence assembly (5) comprises a rotating ring (52) and blades (53), the rotating ring (52) is rotatably connected to the exhaust duct (2), and the rotating ring (52) is perpendicular to the axial direction of the inner wall of the exhaust duct (2) along the rotation axis of the exhaust duct (2); the blades (53) are fixedly connected to the rotating ring (52).

3. A building ventilation structure according to claim 2, characterized in that said ventilation means are provided with at least two, one of the two exhaust ducts (2) of two of said ventilation means being arranged in communication; the two exhaust pipes (2) are vertically arranged, and the turbulence assembly (5) is positioned at the communication position of the two exhaust pipes (2).

4. A building ventilation structure according to claim 3, further comprising a driving device connected between the rotating ring (52) and the rotating member (32), wherein the rotating ring (52) drives the rotating member (32) to rotate along the exhaust duct (2) through the driving device.

5. A building ventilation structure according to claim 4, characterized in that the drive means comprise a first bevel gear (7) and two transmission assemblies (8);

the first bevel gear (7) is coaxially and fixedly connected to the rotating ring (52);

the transmission assembly (8) comprises a second bevel gear (83), a first transmission shaft (81), a third bevel gear (84), a fourth bevel gear (85), a second transmission shaft (82) and a transmission gear (86);

the second bevel gear (83) is meshed with the first bevel gear (7);

the first transmission shaft (81) is rotatably connected to the exhaust pipe (2); one end of the first transmission shaft (81) is coaxially and fixedly connected to the second bevel gear (83), and the other end of the first transmission shaft is coaxially and fixedly connected to the third bevel gear (84);

the fourth bevel gear (85) is meshed with the third bevel gear (84);

the second transmission shaft (82) is rotatably connected to the exhaust pipe (2), and the second transmission shaft (82) is perpendicular to the first transmission shaft (81); one end of the second transmission shaft (82) is coaxially and fixedly connected to the fourth bevel gear (85), and the other end of the second transmission shaft is coaxially and fixedly connected to the transmission gear (86);

the rotating members (32) are toothed rings, and the transmission gears (86) in each transmission assembly (8) are respectively meshed with the rotating members (32) in one driving assembly (3).

6. A building ventilation structure according to claim 5, further comprising an accelerating fan (6), wherein the accelerating fan (6) is located in one of the exhaust pipes (2), and an air outlet of the accelerating fan (6) faces the blade (53) to drive the blade (53) to rotate along with the rotating ring (52).

7. A building ventilation structure according to any one of claims 1-6, characterized in that the exhaust duct (2) comprises a spoiler (22), the inner wall of the spoiler (22) being undulated along the length of the exhaust duct (2).

8. A building ventilation structure according to claim 7, characterized in that the brush (42) is in contact with at least the inner wall of the spoiler (22).

9. The building ventilation structure according to claim 8, wherein the ash cleaning component (4) further comprises an ash scraping sheet (43), and the ash scraping sheet (43) is fixedly connected to the rotating rod (41) and is in contact with the inner wall of the exhaust pipe (2).

10. A building ventilation structure according to claim 9, characterized in that the dust scraping sheet (43) is a flexible sheet.