CN209726433U - A kind of roof air cap - Google Patents

Abstract

The utility model discloses a roof wind cap, which relates to the technical field of ventilation devices, and comprises a wind cap assembly, a pipe opening assembly and a rainproof assembly; the top of the wind cap assembly has a channel communicating with the outside; the rainproof assembly includes a column and a top surface; the column The top surface is supported at the outlet of the ventilation duct of the building; the duct opening assembly is arranged at the outlet of the ventilation duct and communicates with the ventilation duct, and the wind cap assembly is pivotally connected to the duct opening assembly. The utility model mainly solves the problem that turbulent flow is easily generated inside the wind cap; the air flowing vertically from bottom to top in the ventilation duct can directly pass through the upper support ring and leave the wind cap assembly, and the turbulent flow in the wind cap assembly is not easy to generate, so that the operation of the wind cap assembly smooth, improve the ventilation performance of the hood assembly, and at the same time, the hood assembly and the pipe mouth assembly are located under the top surface of the rainproof assembly, so that the roof hood has rainproof performance and can prevent rainwater from pouring back.

Description

a roof hood

technical field

The utility model relates to the technical field of ventilation devices, in particular to a roof wind cap.

Background technique

At present, the roofs of many factories, gymnasiums and large shopping malls and other buildings will be equipped with hoods; Rotate and generate vortex inside the hood, make the air in the hood and the ventilation pipe flow vertically from bottom to top, thus convect the air inside the building with the outside world, accelerate the air flow inside the building, and make the hot air inside the building and Dirty gases are discharged.

The top of the hood in the prior art is sealed with a metal plate, so that the hood has rainproof performance, preventing rainwater from pouring into the hood and flowing into the building through the ventilation pipe; since the top of the hood is sealed, the air in the hood and the ventilation pipe is from bottom to top When it flows vertically and reaches the top of the hood, it will hit the metal plate on the top of the hood, and turbulent flow is likely to occur inside the hood, which is not conducive to the operation of the hood. If the metal plate on the top of the hood is removed, the hood will lose its rainproof performance, which is not conducive to the use of buildings.

Utility model content

The purpose of the utility model is to provide a roof hood, which is not easy to generate turbulent flow inside and has rainproof performance.

In order to achieve the above object, the utility model provides the following technical solutions: a roof wind cap, including a wind cap assembly, a pipe mouth assembly and a rainproof assembly; the top of the wind cap assembly has a channel communicating with the outside world; the rainproof assembly includes a column and the top surface; the column supports the top surface at the outlet of the ventilation duct of the building; the duct opening assembly is arranged at the outlet of the ventilation duct and communicates with the ventilation duct, and the wind cap assembly is pivoted on on the pipe port assembly.

In the above technical solution, the hood assembly includes blades, a lower support ring, a lower support arm, a lower bearing, an upper support ring, an upper support arm, and an upper bearing; the lower bearing and the lower support ring pass through the lower support arm Coaxial fixed connection, the upper bearing and the upper support ring are coaxially fixed connected by the upper support arm, the blade is arranged between the upper support ring and the lower support ring; A vertical rod passing through the lower bearing and the upper bearing.

In the above technical solution, the upright rod penetrates into the top surface.

In the above technical solution, the top surface is a pointed top.

Compared with the prior art, the beneficial effect of the utility model is: this kind of roof hood uses the upper support ring and the upper support arm instead of the sealed steel plate to fix the blades, so that the top of the hood assembly has a channel to communicate with the outside world, from the ventilation The air flowing vertically from bottom to top in the pipeline can directly pass through the upper support ring and leave the hood assembly, so that turbulent flow is not easy to occur in the hood assembly, so that the operation of the hood assembly is smooth and the ventilation performance of the hood assembly is improved. At the same time, the hood assembly and the pipe opening The component is located under the top surface of the rainproof component, so that this type of roof hood has rainproof performance and can prevent rainwater from flowing backward.

Description of drawings

Fig. 1 is a perspective view of the utility model.

Fig. 2 is a view of the internal structure of the air cap assembly and the pipe port assembly in the present invention.

Fig. 3 is an exploded view of the air cap assembly and the pipe port assembly in the present invention.

Fig. 4 is a sectional view of the utility model.

The reference signs are:

1. Wind cap assembly; 11. Blade; 12. Lower support ring; 13. Lower support arm; 14. Upper support ring; 15. Upper support arm; 16. Lower bearing; 17. Upper bearing; 2. Pipe port assembly; 21 , the pipe opening; 22, the hood support arm; 23, the vertical rod; 24, the bottom plate; 3, the rainproof component; 31, the top surface; 32, the column;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1-4, a kind of roof air cap is installed on the roof of building, and this building is provided with ventilation duct 4, and ventilation duct 4 is the square duct of brick-earth structure, and ventilation duct 4 is drawn from the inside of building and passes through. To the roof of the building, the outlet of the ventilation duct 4 points vertically upwards; the outlet of the ventilation duct 4 forms a support platform 41, that is, the support platform 41 is a platform of brick-earth structure, and the support platform 41 is set up at the exit of the ventilation duct 4 , the center of the support platform 41 is a square hole, which communicates with the ventilation duct 4 .

This roof wind cap includes a wind cap assembly 1 , a duct opening assembly 2 and a rainproof assembly 3 .

The wind cap assembly 1 includes a blade 11 , a lower support ring 12 , a lower support arm 13 , an upper support ring 14 , an upper support arm 15 , a lower bearing 16 and an upper bearing 17 .

The lower support ring 12 is a ring formed by bending stainless steel sheets. When the lower support ring 12 is manufactured, the rectangular stainless steel sheet is bent to connect the two ends of the stainless steel sheet, and then the stainless steel sheet is fixed by screws or welding. The two ends of the sheet are fixedly connected to form an annular lower support ring 12; the upper support ring 14 is a circular stainless steel sheet, and when the upper support ring 14 is manufactured, the stainless steel sheet is cut into a circular ring to form the upper support ring 14 .

Both the upper support arm 15 and the lower support arm 13 are elongated stainless steel bars.

Both the lower bearing 16 and the upper bearing 17 are bearings with flanges. Specifically, the lower bearing 16 and the upper bearing 17 include a bearing and a flange respectively, wherein the flange is a disc-shaped flange, and the bearing wears In the flange, and the bearing is coaxial with the flange, thereby forming the lower bearing 16 and the upper bearing 17 respectively; the bearing specifications in the lower bearing 16 and the upper bearing 17 are consistent.

The lower bearing 16 and the lower support ring 12 are coaxially fixedly connected by the lower support arms 13. Specifically, there are five lower support arms 13, and all the lower support arms 13 are arranged radially along the lower support ring 12. Each lower support arm One end of the arm 13 is welded to the inner ring surface of the lower support ring 12. After the welding is completed, the five lower support arms 13 all extend in the direction of the axis of the lower support ring 12; the other end of each lower support arm 13 is connected to the lower bearing The flange of 16 is fixedly connected, after the lower support arm 13 points to the end of the axis of the lower support ring 12 to punch a hole, use bolts to pass through the flange of the lower bearing 16 and the holes on the lower support arm 13 in turn, and then at the end of the bolt Screw in the nut to realize the fixed connection between the lower support arm 13 and the flange of the lower bearing 16 .

The upper bearing 17 and the upper support ring 14 are coaxially fixedly connected by the upper support arm 15. Specifically, there are five upper support arms 15, and all the upper support arms 15 are arranged radially along the upper support ring 14. Each upper support arm One of the ends of 15 is welded to the bottom surface of the upper support ring 14. After the welding is completed, the five upper support arms 15 all extend in the direction of the axis of the upper support ring 14; the other end of each upper support arm 15 is fixedly connected to the flange of the upper bearing 17 After the upper support arm 15 points to the end of the upper support ring 14 axis to punch a hole, use bolts to pass through the flange of the upper bearing 17 and the hole on the upper support arm 15 in turn, and then screw the nut at the end of the bolt, that is The fixed connection between the upper support arm 15 and the flange of the upper bearing 17 can be realized.

After the assembly is completed, the lower support ring 12 , the lower support arm 13 , the lower bearing 16 , the upper support ring 14 , the upper support arm 15 and the upper bearing 17 constitute the support skeleton of the hood assembly 1 .

The blade 11 is an arc-shaped stainless steel sheet. In the wind cap assembly 1, there are several blades 11, and all the blades 11 are arranged between the upper support ring 14 and the lower support ring 12. Specifically, the upper end of each blade 11 is passed through a rivet Fixed on the bottom surface of the upper support ring 14, the lower end of each blade 11 is fixed on the outer ring surface of the lower support ring 12 by rivets.

The rainproof assembly 3 includes a top surface 31 and a column 32 . The top surface 31 and the column 32 are all cement or concrete components; the column 32 is cylindrical, and the four corners of the support platform 41 at the outlet of the ventilation duct 4 are respectively erected and a column 32 is fixed, and the column 32 supports the top surface 31 on the support platform 41 Specifically, the top surface 31 is a cement square plate with the same floor area as the support platform 41, and the four corners of the top surface 31 are respectively fixed to the top surfaces of the four columns 32, so that the four columns 32 can support the top surface 31 On the support platform 41 ; the rainproof assembly 3 and the support platform 41 are completed by pre-casting.

The duct opening assembly 2 includes a duct opening 21 , a hood support arm 22 , a pole 23 and a bottom plate 24 . The pipe mouth 21 is a ring formed by bending stainless steel sheets. When the pipe mouth 21 is manufactured, the rectangular stainless steel sheet is bent to connect the two ends of the stainless steel sheet, and then the stainless steel sheet is fixed by screws or welding. The two ends are fixedly connected to form an annular pipe opening 21; the hood support arm 22 is an elongated stainless steel bar, and the hood support arm 22 is arranged radially along the pipe opening 21. Specifically, there are four hood support arms 22, each One end of the hood support arms 22 is welded to the inner ring surface of the pipe opening 21. After the welding is completed, the four hood support arms 22 all extend toward the axis of the pipe opening 21; the vertical rod 23 is a cylindrical metal long rod, The vertical rod 23 is erected on the pipe mouth assembly 2; the outer diameter of the vertical rod 23 matches the inner ring of the lower bearing 16 and the upper bearing 17, so that the vertical rod 23 can penetrate the lower bearing 16 and the upper bearing 17 respectively, and the vertical rod 23 are interference fit with the lower bearing 16 and the upper bearing 17 respectively; the other end of each hood support arm 22 is fixedly connected with the vertical rod 23 by welding, that is, the cylindrical surface of the vertical rod 23 is respectively directed to the four hood support arms 22. One end of the axis of the pipe mouth 21 is welded, so that the vertical rod 23 is erected on the pipe mouth assembly 2 .

The base plate 24 is a square stainless steel plate, and the base plate 24 is provided with a through hole matching the inner diameter of the pipe opening 21 .

The wind cap assembly 1 is pivotally connected to the pipe mouth assembly 2. Specifically, after the wind cap assembly 1 and the pipe mouth assembly 2 are respectively assembled, the vertical rod 23 passes through the lower bearing 16 and the upper bearing 17 in sequence, thereby completing the wind cap assembly 1 And the assembly of pipe port assembly 2.

The duct opening assembly 2 is arranged on the support platform 41 at the outlet of the ventilation duct 4 and communicates with the ventilation duct 4. Specifically, the bottom plate 24 of the duct opening assembly 2 is laid on the support platform 41, and the through holes on the bottom plate 24 are aligned with the support platform. Through holes on the platform 41, so that the duct opening 21 is aligned with the outlet of the ventilation duct 4, the base plate 24 is fixed on the supporting platform 41 by expansion anchors or chemical anchors, and the fixing of the duct opening assembly 2 and the supporting platform 41 is completed; The vertical rod of the pipe mouth assembly 2 penetrates the top surface 31, specifically, the central opening of the lower surface of the top surface 31, but the hole does not penetrate the top surface 31, and the vertical rod 23 is inserted into the hole of the top surface 31 during assembly. Inside.

After the hood assembly 1 , the duct opening assembly 2 and the rainproof assembly 3 are assembled, the wind cap assembly 1 and the duct opening assembly 2 are located between the top surface 31 of the rainproof assembly 3 and the support platform 41 .

The top of the wind cap assembly 1 has a passage communicating with the outside world, specifically, the space between the upper support ring 14, the upper support arm 15 and the upper bearing 17 of the wind cap assembly 1 forms a passage communicating with the outside world, so that the air cap assembly 1 The inside can communicate with the outside.

Further, the top surface 31 is a pointed top, that is, the outer contour of the top surface 31 is in the shape of a quadrangular pyramid, which is convenient for rainwater to flow down along the top surface 31 .

This kind of roof hood uses the upper support ring 14 and the upper support arm 15 to replace the sealed steel plate to fix the blade 11, so that the top of the hood assembly 1 has a channel communicating with the outside world, and the air flowing vertically from the bottom to the top in the ventilation duct 4 It can directly pass through the upper support ring 14 to leave the hood assembly 1, so that turbulent flow is not easy to occur in the hood assembly 1, so that the operation of the hood assembly 1 is smooth, and the ventilation performance of the hood assembly 1 is improved. At the same time, the hood assembly 1 and the pipe mouth assembly 2 are located Between the top surface 31 of the rain assembly 3 and the supporting platform 41 of the ventilation duct 4, this kind of roof hood is equipped with rainproof performance, which can prevent rainwater from pouring backwards.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (4)

1. A roof hood, characterized in that, comprises a hood assembly, a duct opening assembly and a rainproof assembly; The top of the hood assembly has a channel communicating with the outside world; The rainproof assembly includes a column and a top surface; the column supports the top surface at the outlet of the ventilation duct of the building; The duct opening assembly is arranged at the outlet of the ventilation duct and communicates with the ventilation duct, and the wind cap assembly is pivotally connected to the duct opening assembly. 2. A roof hood according to claim 1, wherein the hood assembly comprises blades, a lower support ring, a lower support arm, a lower bearing, an upper support ring, an upper support arm and an upper bearing; The lower bearing and the lower support ring are coaxially fixedly connected by the lower support arm, the upper bearing and the upper support ring are coaxially fixedly connected by the upper support arm, and the blades are arranged on the upper between the support ring and the lower support ring; A vertical rod is erected on the pipe port assembly, and the vertical rod passes through the lower bearing and the upper bearing. 3. A roof hood according to claim 2, characterized in that: the upright rod penetrates into the top surface. 4. The roof hood according to claim 1, wherein the top surface is a pointed top.