Centrifugal building roof fan

Abstract

The utility model discloses a centrifugal building roof fan which comprises an air duct, an air cap is integrated on the top of the air duct, and two sides of the vertical end of the air duct are respectively and fixedly connected with an extending edge and a mounting plate. In the application, the fan drives the fan blades to rotate, the generated height airflow can jack up the air cap, and the vertical rod synchronously slides along the extension edge, so that the exchange between the indoor airflow and the external airflow is accelerated, the rapid leading-out of the indoor air and the indoor cooling are realized, and in the process, the protective net can effectively protect the indoor air on the basis of not influencing the airflow transfer. According to the dust removal device for the fan blade, the separation of impurities in airflow is realized, so that the fan blade protection is realized while the adhesion of the impurities on the fan blade is effectively reduced, and the protection net is fixed with the mounting plate through the side block and the locking rod, so that the protection net can be conveniently and quickly disassembled subsequently, and the convenience of cleaning the protection net is ensured; and therefore, the use convenience of the centrifugal building roof fan is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of roof fans, in particular to a centrifugal building roof fan. Background Art

[0002] A centrifugal building roof fan is a ventilation device installed on the roof of a building, mainly used to improve the air quality in the room, exhaust the waste gas, moisture or heat generated in the room, and introduce fresh air. This type of fan adopts a centrifugal fan design, and its working principle is to suck air axially along the rotating impeller and then throw it out radially, thereby generating a strong air flow thrust.

[0003] Chinese Patent Publication No. CN213574755, published on June 29, 2021, discloses a roof fan, which includes a base, a wind cylinder arranged on the base, a wind cap matched with the wind cylinder, a fan blade arranged in the wind cylinder, a driving member for driving the fan blade to rotate, a first connecting mechanism connecting the wind cylinder and the wind cap, a second connecting mechanism connecting the base and the wind cylinder, and a wind direction adjusting mechanism for controlling the wind direction. The wind cap includes a wind cap main body provided with a through hole, a driving shaft arranged in the through hole, a cover plate arranged on the driving shaft, a first transmission wheel arranged on the driving shaft, a first driving wheel, and a first connecting belt connecting the first driving wheel and the first transmission wheel.

[0004] Most of the existing centrifugal building roof fans such as the above are composed of a wind cylinder, a wind cap, a fan and a fan blade. In the specific implementation process, when the fan drives the fan blade to rotate and guide the indoor air flow out, the impurities carried in the gas will come into large-area contact with the fan blade. Over time, the fan blade will have a reduced air guiding efficiency due to the accumulation of impurities. Therefore, it is urgent to propose a corresponding centrifugal building roof fan to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to propose a centrifugal building roof fan to solve the above problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A centrifugal building roof fan includes a wind cylinder, a wind cap is integrated at the top of the wind cylinder, extension edges and mounting plates are respectively fixedly connected to both sides of the vertical end of the wind cylinder, a fan component is fixedly connected inside the wind cylinder through a bracket, a fan blade is fixedly connected to the output end of the fan component, a protective net is arranged below the fan blade, and a fixing component for fixing the protective net is arranged between the protective net and the mounting plate.

[0008] Preferably, a vertical rod is fixedly connected to the bottom of the wind cap, and the outer surface of the vertical rod is slidably connected to the inner surface of the extension edge.

[0009] Preferably, a limiting block is fixedly connected to the bottom of the vertical rod through a fastening rod.

[0010] Preferably, a rectangular block is fixedly connected to the top of the limiting block, the outer surface of the rectangular block is inserted into the inner surface of the bottom of the vertical rod through a card slot, and the inner surfaces of the vertical rod, the rectangular block and the limiting block are all screwed to the outer surface of the fastening rod.

[0011] Preferably, a rubber ring is fixedly connected to the top of the extension edge.

[0012] Preferably, the fixing assembly includes a side block, the side block is fixedly connected to the outer surface of the protective net, and the side block is fixedly connected to the bottom of the mounting plate through a locking rod.

[0013] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0014] 1. In this application, the fan drives the fan blade to rotate, and the generated high-altitude airflow will lift the wind cap, and the vertical rod will slide along the extension edge synchronously, so as to accelerate the exchange of indoor airflow and external airflow, thereby realizing the rapid export of indoor gas and the cooling of the room. During this process, the protective net can isolate the impurities inside the airflow on the basis of not affecting the airflow transfer, thereby effectively reducing the adhesion of impurities on the fan blade while realizing the protection of the fan blade. Moreover, the protective net is fixed to the mounting plate through the side block and the locking rod, so that the protective net can be disassembled and assembled conveniently in the future, so as to ensure the convenience of cleaning the protective net, thereby improving the convenience of using the centrifugal building roof fan.

[0015] 2. In this application, insert the rectangular block into the card slot, and then fix it by combining the fastening rod with the limiting block, the rectangular block and the vertical rod. While restricting the position of the vertical rod through the limiting block, the connection method of the locking rod can also ensure the convenience of disassembling the limiting block and the vertical rod, and further ensure the convenience of disassembling and assembling the wind cap and the wind cylinder. Moreover, the cooperation between the rectangular block and the card slot can add axial limit between the limiting block and the vertical rod, further ensuring the stability of the connection between the limiting block, the rectangular block and the vertical rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shows the overall structural schematic diagram provided by the embodiment of the present utility model;

[0017] Figure 2 Shows the structural schematic diagram of the protective net provided by the embodiment of the present utility model;

[0018] Figure 3 Shows the structural schematic diagram of the wind cylinder provided by the embodiment of the present utility model;

[0019] Figure 4Shows a schematic structural diagram of a rectangular block according to an embodiment of the present invention.

[0020] Legend description:

[0021] 1. Air duct; 2. Mounting plate; 3. Protective net; 4. Side block; 5. Locking rod; 6. Wind cap; 7. Vertical rod; 8. Fan component; 9. Rectangular block; 10. Card slot; 11. Limit block; 12. Fastening rod; 13. Extension edge. Specific implementation manner

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0023] Please refer to Figures 1-4 , the present invention provides a technical solution:

[0024] A centrifugal building roof fan includes an air duct 1, and a wind cap 6 is integrated at the top of the air duct 1. On both sides of the vertical end of the air duct 1, an extension edge 13 and a mounting plate 2 are respectively fixedly connected. Inside the air duct 1, a fan component 8 is fixedly connected through a bracket. The output end of the fan component 8 is fixedly connected with a fan blade, and a protective net 3 is arranged below the fan blade. And a fixing component for fixing the protective net 3 is arranged between the protective net 3 and the mounting plate 2;

[0025] The fan component 8 drives the fan blade to rotate, and the generated high-altitude air flow will lift the wind cap 6, and the vertical rod 7 slides along the extension edge 13 synchronously, thereby accelerating the exchange of indoor air flow and external air flow, so as to realize the rapid export of indoor gas and the cooling of the room. During this process, the protective net 3 can isolate the impurities inside the air flow on the basis of not affecting the air flow transfer, thereby effectively reducing the adhesion of impurities on the fan blade while realizing the protection of the fan blade. And the protective net 3 is fixed to the mounting plate 2 through the side block 4 and the locking rod 5, so that the protective net 3 can be disassembled and assembled conveniently later, so as to ensure the convenience of cleaning the protective net 3, thereby improving the convenience of using the centrifugal building roof fan.

[0026] Specifically, as Figure 2 And Figure 4As shown in the figure, a vertical rod 7 is fixedly connected to the bottom of the wind cap 6. The outer surface of the vertical rod 7 is slidably connected to the inner surface of the extension edge 13. The fan component 8 drives the fan blade to rotate, and the generated high-speed air flow will lift the wind cap 6. When the fan component 8 stops operating, the wind cap 6 can automatically cover the top of the air duct 1 to achieve the closure of the top of the air duct 1. The bottom of the vertical rod 7 is fixedly connected with a limiting block 11 through a fastening rod 12. The top of the limiting block 11 is fixedly connected with a rectangular block 9. The outer surface of the rectangular block 9 is inserted into the inner surface of the bottom of the vertical rod 7 through a card slot 10. And the inner surfaces of the vertical rod 7, the rectangular block 9 and the limiting block 11 are all screwed to the outer surface of the fastening rod 12. After inserting the rectangular block 9 into the card slot 10, through the fixation of the limiting block 11, the rectangular block 9 and the vertical rod 7 by the fastening rod 12 at the same time, while restricting the position of the vertical rod 7 by the limiting block 11, the connection method of the fastening rod 12 can also ensure the convenience of disassembling the limiting block 11 and the vertical rod 7, and further ensure the convenience of disassembling and assembling the wind cap 6 and the air duct 1. And the cooperation between the rectangular block 9 and the card slot 10 can add axial limitation between the limiting block 11 and the vertical rod 7, further ensuring the stability of the connection between the limiting block 11, the rectangular block 9 and the vertical rod 7.

[0027] Specifically, as Figure 2 shown in Figure 3 the figure, a rubber ring is fixedly connected to the top of the extension edge 13 to avoid the rigid collision between the wind cap 6 and the air duct 1. The fixing component includes a side block 4. The side block 4 is fixedly connected to the outer surface of the protective net 3, and the side block 4 is fixedly connected to the bottom of the mounting plate 2 through a locking rod 5, so that the subsequent disassembly and assembly of the protective net 3 can be carried out conveniently, thereby ensuring the convenience of cleaning the protective net 3.

[0028] Working principle: The fan component 8 drives the fan blade to rotate, and the generated high-speed air flow will lift the wind cap 6. The vertical rod 7 slides along the extension edge 13 synchronously, so as to accelerate the exchange of indoor air flow and outdoor air flow, thereby realizing the rapid export of indoor gas and the cooling of the indoor environment. During this process, the protective net 3 can isolate the impurities in the air flow on the premise of not affecting the air flow transfer, effectively reducing the adhesion of impurities on the fan blade while protecting the fan blade. And the protective net 3 is fixed to the mounting plate 2 through the side block 4 and the locking rod 5, so that the subsequent disassembly and assembly of the protective net 3 can be carried out conveniently, thereby ensuring the convenience of cleaning the protective net 3, and improving the convenience of using the centrifugal building roof fan. After inserting the rectangular block 9 into the card slot 10, through the fixation of the limiting block 11, the rectangular block 9 and the vertical rod 7 by the fastening rod 12 at the same time, while restricting the position of the vertical rod 7 by the limiting block 11, the connection method of the fastening rod 12 can also ensure the convenience of disassembling the limiting block 11 and the vertical rod 7, and further ensure the convenience of disassembling and assembling the wind cap 6 and the air duct 1. And the cooperation between the rectangular block 9 and the card slot 10 can add axial limitation between the limiting block 11 and the vertical rod 7, further ensuring the stability of the connection between the limiting block 11, the rectangular block 9 and the vertical rod 7.

[0029] The above description of the embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A centrifugal building roof fan, comprising a wind cylinder (1), and a wind cap (6) is integrated at the top of the wind cylinder (1), characterized in that, On both sides of the vertical end of the air duct (1), there are respectively fixedly connected with a skirt (13) and a mounting plate (2). Inside the air duct (1), there is a fan component (8) fixedly connected by a bracket. The output end of the fan component (8) is fixedly connected with a fan blade, and there is a protective net (3) arranged below the fan blade. And there is a fixing component for fixing the protective net (3) arranged between the protective net (3) and the mounting plate (2).

2. The centrifugal building roof fan according to claim 1, wherein The bottom of the wind cap (6) is fixedly connected with a vertical rod (7), and the outer wall of the vertical rod (7) is slidably connected with the inner wall of the skirt (13).

3. The centrifugal building roof fan according to claim 2, characterized in that, The bottom of the vertical rod (7) is fixedly connected with a limiting block (11) through a fastening rod (12).

4. The centrifugal building roof fan according to claim 3, characterized in that, The top of the limiting block (11) is fixedly connected with a rectangular block (9). The outer wall of the rectangular block (9) is inserted into the inner wall of the bottom of the vertical rod (7) through a card slot (10). And the inner walls of the vertical rod (7), the rectangular block (9) and the limiting block (11) are all screwed with the outer wall of the fastening rod (12).

5. The centrifugal roof fan for buildings according to claim 4, characterized in that, The top of the skirt (13) is fixedly connected with a rubber ring.

6. The centrifugal building roof fan according to claim 5, characterized in that, The fixing component includes a side block (4). The side block (4) is fixedly connected with the outer wall of the protective net (3). And the side block (4) is fixedly connected with the bottom of the mounting plate (2) through a locking rod (5).

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