Wind cap with sundry prevention function

Abstract

The utility model discloses a wind cap with a sundry prevention function, which belongs to the field of wind caps and comprises a base, a cylindrical channel is arranged inside the base, a plurality of arc-shaped wind cap fan blades arranged at equal intervals are annularly distributed at the top of the base, a top plate is arranged at the tops of the wind cap fan blades, a connecting cover is arranged outside the base, and the connecting cover is connected with the cylindrical channel. Protective rods distributed at equal intervals are annularly arranged at the top of the connecting cover, an annular mounting part is arranged at the bottom of the base, a supporting frame is fixedly connected to the interior of a base channel through five supports, and a supporting shaft is rotationally connected to the center of the top of the supporting frame; the protective rods are annularly distributed at the top of the connecting cover at equal intervals, so that external plastic bags and other garbage are effectively prevented from directly wrapping the fan blades of the hood, normal operation of the hood is guaranteed, the problem that a traditional hood is easily affected by external sundries is solved, the stability of the hood is improved, and the service life of the hood is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of windproof cap technology, specifically relating to a windproof cap with the function of preventing debris. Background Technology

[0002] The non-powered ventilator, also known as a turbine ventilator, is mainly driven by natural wind and thermal convection formed by the temperature difference between indoors and outdoors. Its working principle is to convert the parallel air flow into the vertical upward exhaust flow through centrifugal force and negative pressure effect, thereby achieving efficient ventilation. This device does not require electricity, has the advantages of zero noise and low-cost maintenance, and has a service life of more than 15 years.

[0003] For example, publication number CN 221034601 U relates to a wind cap with a structure to prevent foreign objects from entering, belonging to the field of wind cap technology. The inner side of the connecting sleeve is provided with multiple baffle structures. One end of the support rod is provided with a middle connecting plate. Transition plates are respectively provided on both sides of the bottom of the middle connecting plate. A connecting through hole is provided on the transition plate, and a screw is provided in the connecting through hole. A rotating plate is also provided on the screw, and a baffle is provided on the rotating plate. The advantages of this utility model are: by installing the connecting sleeve at the outlet of the exhaust pipe and installing the baffle structure in the connecting sleeve, external foreign objects are blocked, preventing them from entering the wind cap. When gas needs to be discharged, the gas opens the gap between the baffles, allowing the gas to escape. This method solves the problem of foreign objects easily entering traditional wind caps, reducing the probability of the wind cap becoming clogged. This utility model has a novel structure and a good effect in preventing foreign objects from entering.

[0004] While the above-mentioned cases can prevent the pipes from being blocked in actual use, the exposed vent caps on the roof are easily covered by garbage such as plastic bags, making them difficult to operate. Therefore, this utility model provides a vent cap with a debris-proof function. Utility Model Content

[0005] The purpose of this invention is to provide a windproof cap with a debris-proof function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a windproof cap with debris protection function, comprising a base, a cylindrical channel inside the base, a plurality of arc-shaped windproof cap blades evenly distributed in a ring at the top of the base, a top plate at the top of the windproof cap blades, a connecting cover outside the base, and protective rods evenly distributed in a ring at the top of the connecting cover.

[0007] In a preferred embodiment, the base has an annular mounting part at its bottom, and a support frame is fixedly connected inside the base channel by five brackets. A support shaft is rotatably connected to the center of the top of the support frame, and the top of the support shaft is rotatably connected to the center of the bottom of the top plate. The outside of the support shaft is fixedly connected to multiple fan blades.

[0008] In a preferred embodiment, the connecting cover is composed of two semi-circular splicing parts, one of the splicing parts having a plurality of fixing buttons on the side facing the other splicing part, and the other splicing part having fixing holes adapted to the fixing buttons on the side facing the splicing part.

[0009] In a preferred embodiment, a connecting ring is provided at the center of the connecting cover, which fits against the surface of the base. The connecting cover is a trumpet-shaped structure with an opening facing the fan blades of the wind cap.

[0010] In a preferred embodiment, the connecting cover has a light-concentrating reflective surface on the side facing the fan blades of the wind cap.

[0011] In a preferred embodiment, the top of the connecting cover is provided with a plurality of equally spaced fixing seats in a ring shape. The top of each fixing seat is provided with a set of symmetrically arranged limiting plates. The opposing surfaces of the two limiting plates are provided with fixing protrusions. The interior of each fixing protrusion is provided with a deformation cavity. The top of the opposing surfaces of the two limiting plates is provided with an arc-shaped guide surface.

[0012] In a preferred embodiment, the bottom end of the protective rod is provided with limiting grooves on both sides that are adapted to the limiting plate, and the limiting grooves are provided with fixing grooves that are adapted to the fixing protrusions.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This wind cap with anti-debris function effectively prevents external garbage such as plastic bags from directly wrapping the wind cap blades by setting protective rods in a ring at equal intervals on the top of the connecting cover, thus ensuring the normal operation of the wind cap. This design solves the problem that traditional wind caps are easily affected by external debris, and improves the stability and service life of the wind cap.

[0015] This wind cap features a debris-proof design. The connecting ring inside the connecting cover fits snugly against the base surface, and the connecting cover has a trumpet-shaped structure with its opening facing the wind cap's fan blades. This design helps enhance ventilation efficiency, making airflow smoother and improving the wind cap's ventilation performance. The side of the connecting cover facing the wind cap's fan blades has a light-concentrating reflective surface. As the temperature of the wind cap's fan blades rises, the surrounding air expands due to heat, reducing its density and creating a low-pressure area. This pressure difference drives the surrounding cool air to flow towards the wind cap's fan blades, thereby accelerating the overall ventilation rate of the wind cap. In hot weather, the temperature difference between indoors and outdoors may be more significant. The accelerated airflow caused by the heat from the wind cap's fan blades can more effectively utilize the thermal convection effect formed by this temperature difference, thereby improving ventilation efficiency. Attached Figure Description

[0016] Figure 1 This is a front view of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the fit of the structure of this utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A;

[0019] Figure 4 This is a schematic diagram of the inside of the hood.

[0020] In the diagram: 1. Base; 101. Mounting part; 102. Support frame; 103. Support shaft; 2. Fan blades of the hood; 3. Top plate; 4. Connecting cover; 401. Reflective surface; 402. Connecting ring; 403. Fixing button; 404. Fixing seat; 405. Limiting plate; 406. Guide surface; 407. Fixing protrusion; 5. Protective rod; 501. Limiting groove; 502. Fixing groove. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments.

[0022] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0023] Please see Figure 1-4This utility model provides a windproof cap with debris protection function, including a base 1. The base 1 has a cylindrical channel inside. Multiple arc-shaped windproof cap blades 2 are evenly distributed in a ring on the top of the base 1. A top plate 3 is provided on the top of the windproof cap blades 2. An annular mounting part 101 is provided at the bottom of the base 1. A support frame 102 is fixedly connected to the inside of the channel of the base 1 by five brackets. A support shaft 103 is rotatably connected to the center of the top of the support frame 102. The top of the support shaft 103 is rotatably connected to the center of the bottom of the top plate 3. The outside of the support shaft 103 is fixedly connected to the multiple windproof cap blades 2. When there is a natural breeze or a temperature difference between indoors and outdoors, air will flow through the cylindrical channel inside the base 1. The power generated by the air flow and the thermal convection effect formed by the temperature difference will drive the fan blades 2 to start rotating. The fan blades 2 are connected to the top plate 3 and the support frame 102 through the support shaft 103 to form an integral structure. When air flows through the fan blades 2, the fan blades 2 will start to rotate due to the centrifugal force. As the fan blades 2 rotate, the air is transformed from a parallel direction to a vertically upward exhaust flow. This vertically upward exhaust flow achieves efficient ventilation.

[0024] In this embodiment, the base 1 is provided with a connecting cover 4 on its exterior. The top of the connecting cover 4 is provided with equidistant protective rods 5 arranged in a ring. The connecting cover 4 is composed of two semi-circular splicing parts. One splicing part has multiple fixing buttons 403 on its side facing the other splicing part, and the other splicing part has fixing holes that fit the fixing buttons 403 on its side facing the first splicing part. A connecting ring 402 that fits against the surface of the base 1 is provided at the center of the connecting cover 4. The connecting cover 4 has a trumpet-shaped structure with its opening facing the fan blades 2. A light-concentrating reflective surface 401 is provided on the side of the connecting cover 4 facing the fan blades 2. The connecting cover 4 is composed of two semi-circular splicing parts, facilitating installation and disassembly. During assembly, the fixing buttons 403 on one splicing part are aligned with the other. The connecting parts are fixed together by fixing holes to form a complete connecting cover 4. A connecting ring 402 is provided in the center of the connecting cover 4. The connecting ring 402 fits against the surface of the base 1 to ensure that the connecting cover 4 is firmly installed on the base 1. A light-concentrating reflective surface 401 is provided on the side of the connecting cover 4 facing the fan blade 2. Under sunlight, the light-concentrating reflective surface 401 will reflect sunlight and focus the light onto the fan blade 2, thereby increasing the temperature of the fan blade. The increase in the temperature of the fan blade will accelerate the air flow around it, thereby enhancing the ventilation effect of the fan cover. The top of the connecting cover 4 is provided with equidistantly distributed protective rods 5. The protective rods 5 can prevent external garbage such as plastic bags from directly wrapping the fan blade 2, ensuring the normal operation of the fan cover.

[0025] The connecting cover 4 consists of two semi-circular splicing parts, which facilitates installation and disassembly and reduces maintenance costs. The design of the concentrating reflective surface 401 increases the temperature of the fan blades 2 of the hood and accelerates airflow, thereby enhancing the ventilation effect. The protective rod 5 effectively prevents external debris from wrapping around the fan blades 2 of the hood, improving the stability and service life of the hood. The concentrating reflective surface 401 uses sunlight to increase the temperature of the fan blades without the need for additional energy, which meets the requirements of energy conservation and environmental protection.

[0026] In this embodiment, the top of the connecting cover 4 is provided with a plurality of equally spaced fixing seats 404 in a ring shape. The top of the fixing seats 404 is provided with a set of symmetrically arranged limiting plates 405. The opposing surfaces of the two limiting plates 405 are provided with fixing protrusions 407. The interior of the fixing protrusions 407 is provided with deformation cavities. The top of the opposing surfaces of the two limiting plates 405 is provided with an arc-shaped guide surface 406. The bottom of the protective rod 5 is provided with limiting grooves 501 on both sides that are adapted to the limiting plates 405. The limiting grooves 501 are provided with fixing recesses 502 that are adapted to the fixing protrusions 407. The bottom of the protective rod 5 is aligned with the limiting plates 405 on the fixing seats 404, so that the limiting grooves 501 are aligned with the fixing protrusions 407. The contour of the limiting plate 405 is matched. Under the guidance of the arc-shaped guide surface 406, the protective rod 5 can be more easily inserted into the limiting plate 405 until the limiting groove 501 completely covers the limiting plate 405. When the protective rod 5 is inserted into place, the fixing protrusion 407 will enter the fixing groove 502 in the limiting groove 501. Since the fixing protrusion 407 has a deformation cavity inside, it can undergo a certain deformation during the insertion process to adapt to the shape and size of the fixing groove 502. Once the fixing protrusion 407 is completely inserted into the fixing groove 502, it will be firmly fixed in the groove due to the rebound of the deformation cavity, thereby ensuring the stable installation of the protective rod 5.

[0027] With the cooperation of the limiting plate 405, the fixing protrusion 407, and the fixing groove 502, the protective rod 5 is firmly fixed to the connecting cover 4, forming a stable installation structure. This design ensures that the protective rod 5 will not loosen or fall off during long-term use, thereby improving the overall stability and safety of the wind cap. The arc-shaped guide surface 406 makes it easier for the protective rod 5 to be aligned and inserted between the limiting plates 405 during installation, reducing the difficulty of installation. Since the fixing protrusion 407 has deformation capability, it can deform to a certain extent during insertion to adapt to the shape of the fixing groove 502, thereby simplifying the installation process. The stable installation of the protective rod 5 ensures that it can effectively prevent external garbage such as plastic bags from directly wrapping around the wind cap blades 2, thereby improving the wind cap's anti-debris effect. This design helps to keep the wind cap blades 2 clean and operate normally, extending the service life of the wind cap.

[0028] The working principle and usage process of this utility model are as follows: First, when there is a natural breeze or a temperature difference between indoors and outdoors, air flows through the cylindrical channel inside the base 1. The power generated by the air flow and the thermal convection effect formed by the temperature difference drive the fan blades 2 to start rotating. The fan blades 2 are connected to the top plate 3 and the support frame 102 via the support shaft 103, forming an integral structure. When air flows through the fan blades 2, the fan blades 2 start to rotate due to centrifugal force. As the fan blades 2 rotate, the air is transformed from a parallel direction to a vertically upward exhaust flow. This vertically upward exhaust flow achieves efficient ventilation. During assembly, the fixing button 403 on one splicing part is aligned with the fixing button 403 on another splicing part. The holes are fixed together to form a complete connecting cover 4. A connecting ring 402 is provided at the center of the connecting cover 4. The connecting ring 402 fits against the surface of the base 1 to ensure that the connecting cover 4 is firmly installed on the base 1. A light-concentrating reflective surface 401 is provided on the side of the connecting cover 4 facing the fan blade 2. Under sunlight, the light-concentrating reflective surface 401 will reflect sunlight and focus the light onto the fan blade 2, thereby increasing the temperature of the fan blade. The increase in the temperature of the fan blade will accelerate the air flow around it, thereby enhancing the ventilation effect of the fan cover. The top of the connecting cover 4 is provided with equally spaced protective rods 5. The protective rods 5 can prevent external garbage such as plastic bags from directly wrapping the fan blade 2, ensuring the normal operation of the fan cover.

[0029] Although embodiments of the present 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 of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hood with anti-dust function, comprising a base (1), characterized in that: The inside of the base (1) is provided with a cylindrical channel, the top of the base (1) is annularly provided with a plurality of arc-shaped hood leaves (2) arranged at equal intervals, the top of the hood leaf (2) is provided with a top plate (3), the outside of the base (1) is provided with a connecting cover (4), and the top of the connecting cover (4) is annularly provided with equidistant protection rods (5).

2. The hood with the dirt prevention function according to claim 1, characterized in that: The bottom of the base (1) is provided with an annular mounting portion (101), the inside of the channel of the base (1) is fixedly connected with a support frame (102) through five supports, the top center of the support frame (102) is rotatably connected with a support shaft (103), the top end of the support shaft (103) is rotatably connected with the center of the bottom of the top plate (3), and the outside of the support shaft (103) is fixedly connected with the plurality of hood leaves (2).

3. The hood with the dirt prevention function according to claim 1, characterized in that: The connecting cover (4) is spliced from two semicircular splicing pieces, one of the splicing pieces is provided with a plurality of fixing buttons (403) on the side facing the other splicing piece, and the other splicing piece is provided with fixing holes matched with the fixing buttons (403) on the side facing the splicing piece.

4. The hood with the dirt prevention function according to claim 3, characterized in that: The center of the inside of the connecting cover (4) is provided with a connecting ring (402) matched with the surface of the base (1), and the connecting cover (4) is a horn-shaped structure with an opening facing the hood leaf (2).

5. The hood with the dirt prevention function according to claim 4, characterized in that: The side of the connecting cover (4) facing the hood leaf (2) is provided with a light condensing reflecting surface (401).

6. The hood with the dirt prevention function according to claim 1, characterized in that: The top of the connecting cover (4) is annularly provided with a plurality of fixing seats (404) arranged at equal intervals, the top of the fixing seat (404) is provided with a group of symmetrically arranged limiting plates (405), the opposite sides of the two limiting plates (405) are provided with fixing protrusions (407), the inside of the fixing protrusion (407) is provided with a deformation cavity, and the top of the opposite sides of the two limiting plates (405) is provided with an arc-shaped guide surface (406).

7. The hood with the dirt prevention function according to claim 6, characterized in that: The bottom end of the protection rod (5) is provided with a limiting groove (501) matched with the limiting plate (405) on both sides, and the limiting groove (501) is provided with a fixing groove (502) matched with the fixing protrusion (407).

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