Roof fan with waterproof structure

Abstract

The utility model relates to the technical field of roof fans, in particular to a roof fan with a waterproof structure, which comprises a fan cover, a support rod is fixed on the upper side of the fan cover close to one side, a first connecting block is rotatably arranged at the top of the support rod, and a waterproof cover is fixed on the upper side of the first connecting block through a threaded nail. A pair of limiting cylinders are hinged to the upper side, close to the other side, of the fan cover, limiting rods are slidably arranged on the inner sides of the limiting cylinders, second connecting blocks are hinged to the top ends of the limiting rods, the waterproof cover and the second connecting blocks are fixed through threaded nails, and a third connecting block is fixed to the position, located between the pair of second connecting blocks, of the lower side of the fan cover through threaded nails; a telescopic rod is hinged between the third connecting block and the fan cover. The fan waterproof structure solves the problems that an existing fan waterproof structure generally can only be arranged at the top of a fan outer cover and arranged above the fan outer cover in a blocking mode, and even if a certain distance is formed between a waterproof cover and the top end of the fan outer cover, normal air exhaust can still be affected, and ventilation in a plant is not smooth.

Description

Technical Field

[0001] This utility model relates to the field of roof ventilator technology, specifically to a roof ventilator with a waterproof structure. Background Technology

[0002] Roof ventilators utilize the principle of natural air convection to accelerate and transform parallel airflow into vertical airflow from bottom to top, thereby improving indoor ventilation. They can operate through mechanical exhaust or natural ventilation, while non-powered roof ventilators rely entirely on natural wind and indoor-outdoor temperature differences for operation.

[0003] A typical rooftop ventilator structure includes a ventilator casing, with several connecting lugs fixed to the outside of the casing. A waterproof cover is installed on top of the casing, secured to the outside of the connecting lugs with threaded nails to prevent rainwater from entering the ventilator. However, existing waterproof structures are generally only installed on the top of the casing, blocking the view above it. Even with a certain distance between the waterproof cover and the top of the casing, normal ventilation is still affected, leading to poor ventilation inside the factory. Utility Model Content

[0004] The technical problem this utility model aims to solve is that existing waterproof structures for fans can generally only be installed on the top of the fan casing, blocking the top of the fan casing. Even if there is a certain distance between the waterproof cover and the top of the fan casing, it will still affect normal ventilation and cause poor ventilation in the factory.

[0005] To solve the above problems, the technical solution adopted by this utility model is a roof ventilator with a waterproof structure, including a ventilator cover, a support rod fixed to one side of the upper side of the ventilator cover, a connecting block 1 rotatably provided at the top of the support rod, a waterproof cover fixed to the upper side of the connecting block 1 by threaded nails, a pair of limiting cylinders hinged to the upper side of the ventilator cover near the other side, a limiting rod slidably provided inside the limiting cylinders, a connecting block 2 hinged to the top of the limiting rod, the waterproof cover and the connecting block 2 being fixed together by threaded nails, a connecting block 3 fixed to the lower side of the ventilator cover between the pair of connecting blocks 2 by threaded nails, and a telescopic rod hinged between the connecting block 3 and the ventilator cover.

[0006] As a further embodiment of this invention: the length of the limiting rod is equal to the length of the limiting cylinder, to prevent the limiting rod from detaching from the limiting cylinder.

[0007] As a further embodiment of this invention, a retaining ring is fixed to the top of the threaded nail to facilitate rotation of the threaded nail.

[0008] As a further embodiment of this invention, the height of the support rod is greater than the height of the fan cover, in order to reserve space for air circulation.

[0009] As a further embodiment of this utility model: the waterproof cover has an arc-shaped top in the middle, which facilitates ventilation.

[0010] As a further embodiment of this invention, the telescopic rod is electrically connected to an external power source.

[0011] Compared with the prior art, the advantages of this utility model are as follows: This application adds a telescopic rod structure and an extendable waterproof cover structure. By using the telescopic rod to lift one end of the waterproof cover, the fan can be ventilated normally, ensuring clean air in the factory. In rainy or snowy weather, the telescopic rod can be used to lower the waterproof cover for protection. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This utility model relates to an integral three-dimensional structure of a roof ventilator with a waterproof structure. Figure 1 .

[0014] Figure 2 This utility model relates to an integral three-dimensional structure of a roof ventilator with a waterproof structure. Figure 2 .

[0015] Figure 3 This is a partial structural cross-sectional view of a roof ventilator with a waterproof structure according to the present invention.

[0016] Figure 4 This is an enlarged view of section A of a roof ventilator with a waterproof structure according to this utility model.

[0017] Figure 5 This is an enlarged view of part B of a roof ventilator with a waterproof structure according to this utility model.

[0018] Figure 6 This is an enlarged view of section C of a roof ventilator with a waterproof structure according to this utility model.

[0019] In the attached image:

[0020] 1. Fan cover; 2. Support rod; 3. Connecting block one; 4. Threaded nail; 5. Waterproof cover; 6. Limiting cylinder; 7. Limiting rod; 8. Connecting block two; 9. Connecting block three; 10. Telescopic rod; 4.1. Buckle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides a technical solution to address the existing problems mentioned in the background art.

[0023] Combined with appendix Figure 1-6 It can be seen that the fan cover 1 is included. A support rod 2 is fixed to the upper side of the fan cover 1 near one side. The height of the support rod 2 is greater than the height of the fan cover 1 to reserve space for air circulation. A connecting block 3 is rotatably provided on the top of the support rod 2. A waterproof cover 5 is fixed to the upper side of the connecting block 3 by a threaded nail 4. The waterproof cover 5 has an arc-shaped top in the middle to facilitate ventilation. A buckle 4.1 is fixed to the top of the threaded nail 4 to facilitate the rotation of the threaded nail 4 and to protect the fan from water leakage. A hinge is provided on the upper side of the fan cover 1 near the other side. A limiting rod 7 is slidably provided on the inner side of the limiting cylinder 6. The length of the limiting rod 7 is equal to the length of the limiting cylinder 6 to prevent the limiting rod 7 from detaching from the limiting cylinder 6 and to accommodate the unfolding of the waterproof cover 5. A connecting block 2 8 is hinged to the top of the limiting rod 7. The waterproof cover 5 and the connecting block 2 8 are fixed together by threaded nails 4. A connecting block 3 9 is fixed to the lower side of the fan cover 1 between a pair of connecting blocks 2 8 by threaded nails 4. A telescopic rod 10 is hinged between the connecting block 3 9 and the fan cover 1, which can drive one end of the waterproof cover 5 to rise.

[0024] The working principle of this application is as follows: During normal ventilation, the telescopic rod 10 is in the extended state, which will push one end of the waterproof cover 5 upward, and the waterproof cover 5 is in the tilted open state, which facilitates the exhaust of the fan.

[0025] When encountering rainy or snowy weather, the telescopic rod 10 can be activated in advance to lower one end of the waterproof cover 5 so that it can be placed on top of the fan cover 1 for waterproofing.

[0026] When it is necessary to replace the waterproof cover 5, the threaded nails 4 can be manually removed from connecting block 1 3, connecting block 2 8, and connecting block 3 9 to facilitate the disassembly and replacement of the waterproof cover 5.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A roof fan with a waterproof structure, comprising a fan cover (1), characterized in that: A support rod (2) is fixed on the upper side of the fan cover (1) near one side. A connecting block (3) is rotatably provided on the top of the support rod (2). A waterproof cover (5) is fixed on the upper side of the connecting block (3) by a threaded nail (4). A pair of limiting cylinders (6) are hinged on the upper side of the fan cover (1) near the other side. A limiting rod (7) is slidably provided on the inner side of the limiting cylinder (6). A connecting block (8) is hinged on the top of the limiting rod (7). The waterproof cover (5) and the connecting block (8) are fixed by a threaded nail (4). A connecting block (9) is fixed on the lower side of the fan cover (1) between the pair of connecting blocks (8) by a threaded nail (4). A telescopic rod (10) is hinged between the connecting block (9) and the fan cover (1).

2. A roof fan with waterproof structure according to claim 1, characterized in that: The length of the limiting rod (7) is equal to the length of the limiting cylinder (6).

3. The roof fan with waterproof structure according to claim 1, characterized in that: The threaded nail (4) has a retaining ring (4.1) fixed to its top end.

4. The roof fan with waterproof structure according to claim 1, characterized in that: The height of the support rod (2) is greater than the height of the fan cover (1).

5. The roof fan with waterproof structure according to claim 1, characterized in that: The waterproof cover (5) has an arc-shaped top in the middle.

6. A roof fan with waterproof structure according to claim 1, characterized in that: The telescopic rod (10) is electrically connected to an external power source.

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