Rainproof multi-wing centrifugal fan

Abstract

The utility model relates to the technical field of centrifugal fans, in particular to a rainproof multi-wing centrifugal fan which comprises a centrifugal fan body and a rainproof cover, the centrifugal fan body is fixedly installed in the rainproof cover, a plurality of first heat dissipation holes are formed in the two sides of the rainproof cover, second heat dissipation holes are formed in the side wall of the rainproof cover, and the first heat dissipation holes are communicated with the second heat dissipation holes. Fixed boxes are fixedly mounted on the outer walls of the two sides of the rainproof cover, tension springs are fixedly mounted in the fixed boxes, movable frames are fixedly mounted at the bottom ends of the tension springs, and the movable frames are slidably connected with the fixed boxes. Through the arrangement of the inverted trapezoidal water storage box, the fixed box, the tension spring, the movable frame, the rectangular-ambulatory-plane frame and the second heat dissipation holes, in case of heavy rainy days, the first heat dissipation holes can be blocked, and heat dissipation can be carried out through the second heat dissipation holes and the rectangular-ambulatory-plane frame; therefore, the possibility that rainwater enters the rainproof cover is reduced, and the influence of the rainwater on equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, and in particular to a rainproof multi-wing centrifugal fan. Background Art

[0002] Multi-blade centrifugal fan is a type of centrifugal fan and is also a common ventilator on the market. Because the impeller used in this fan is a multi-blade fan blade and its working principle is the same as that of the centrifugal fan, it is commonly and vividly called a multi-blade centrifugal fan.

[0003] However, the existing multi-blade centrifugal fans are used outdoors. When used on rainy days, they are usually protected from rain by rain covers, and heat is dissipated through the heat dissipation holes on the side walls of the rain covers. However, if heavy rain occurs, rainwater may still enter the interior of the rain covers over a large area, causing damage to the equipment and even affecting the normal operation of the entire system. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the utility model provides a rainproof multi-blade centrifugal fan, which can effectively solve the problem of the prior art that the centrifugal fan lacks effective rainproof measures when used on rainy days.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The utility model provides a rainproof multi-blade centrifugal fan, comprising a centrifugal fan body and a rainproof cover, the centrifugal fan body is fixedly installed inside the rainproof cover, both sides of the rainproof cover are provided with a plurality of first heat dissipation holes, the side walls of the rainproof cover are provided with second heat dissipation holes, the outer walls of both sides of the rainproof cover are fixedly installed with a fixing box, a tension spring is fixedly installed inside the fixing box, a moving frame is fixedly installed at the bottom end of the tension spring, the moving frame is slidably connected to the fixing box, a connecting plate is fixedly connected to the bottom of the moving frame, an inverted trapezoidal water storage box is movably installed on the side wall of the rainproof cover, the bottom end of the inverted trapezoidal water storage box is fixedly connected to the tops of two connecting plates, a U-shaped frame is fixedly installed inside the inverted trapezoidal water storage box, and the U-shaped frame is inclined, and a drainage mechanism is provided at the bottom of the inverted trapezoidal water storage box.

[0007] Preferably, the drainage mechanism includes a water pipe, the top end of the water pipe is connected to the bottom end of the inverted trapezoidal water storage box, the side wall of the water pipe is provided with a valve, the outer wall of the water pipe is provided with a connecting ring, and the connecting ring is fixedly connected to the side wall of the rain cover.

[0008] Preferably, the side wall of the rain cover close to the inverted trapezoidal water storage box is provided with two slide grooves, and the side wall of the inverted trapezoidal water storage box close to the rain cover is fixedly connected with two sliders, and the two sliders are slidably installed inside the slide grooves respectively.

[0009] Preferably, the water pipe is a telescopic hose.

[0010] Preferably, a baffle is fixedly mounted on the top of the rain cover, and the side wall of the baffle is in contact with the side wall of the inverted trapezoidal water storage box.

[0011] Preferably, a vent is provided on the side wall of the rain cover.

[0012] Compared with the known prior art, the technical solution provided by the utility model has the following beneficial effects:

[0013] By arranging the inverted trapezoidal water storage box, the fixed box, the tension spring, the movable frame, the U-shaped frame and the second heat dissipation hole, the first heat dissipation hole can be used for heat dissipation on sunny days. If it rains heavily, a certain amount of rainwater will accumulate inside the inverted trapezoidal water storage box, driving the connecting plate to move and blocking the first heat dissipation hole to prevent rainwater from entering the interior of the rain cover through the first heat dissipation hole and affecting the use of the equipment. At the same time, heat will be dissipated through the second heat dissipation hole and the U-shaped frame. Since the U-shaped frame is inclined, the possibility of rainwater entering the rain cover is reduced, thereby reducing the impact of rainwater on the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 A schematic diagram of a three-dimensional structure of the utility model from another viewing angle;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure when the utility model is used;

[0018] Figure 4 It is a schematic diagram of the partial split structure of the utility model;

[0019] Figure 5 It is a schematic cross-sectional view of the inverted trapezoidal water storage box of the utility model.

[0020] Figure numerals: 1. centrifugal fan body; 2. rain cover; 3. first heat dissipation hole; 4. second heat dissipation hole; 5. fixed box; 6. tension spring; 7. movable frame; 8. connecting plate; 9. inverted trapezoidal water storage box; 10. U-shaped frame; 11. slider; 12. water pipe; 13. valve; 14. vent; 15. baffle; 16. slide groove; 17. connecting ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model is further described below in conjunction with embodiments.

[0023] Example: Refer to Figures 1 to 5 A rainproof multi-blade centrifugal fan comprises a centrifugal fan body 1 and a rainproof cover 2, the centrifugal fan body 1 is fixedly installed inside the rainproof cover 2, a plurality of first heat dissipation holes 3 are provided on both sides of the rainproof cover 2, a second heat dissipation hole 4 is provided on the side wall of the rainproof cover 2, a fixing box 5 is fixedly installed on the outer walls of both sides of the rainproof cover 2, a tension spring 6 is fixedly installed inside the fixing box 5, a moving frame 7 is fixedly installed at the bottom end of the tension spring 6, the moving frame 7 is slidably connected to the fixing box 5, a connecting plate 8 is fixedly connected to the bottom of the moving frame 7, an inverted trapezoidal water storage box 9 is movably installed on the side wall of the rainproof cover 2, the bottom end of the inverted trapezoidal water storage box 9 is fixedly connected to the tops of the two connecting plates 8, a U-shaped frame 10 is fixedly installed inside the inverted trapezoidal water storage box 9, and the U-shaped frame 10 The inverted trapezoidal water storage box 9 is set at an angle, and a drainage mechanism is set at the bottom. When it rains, rainwater enters the inverted trapezoidal water storage box 9. As the rainwater accumulates more and more, the inverted trapezoidal water storage box 9 moves down as a whole, which has a certain force on the connecting plate 8, and then drives the movable frame 7 to move out from the inside of the fixed box 5, which has a certain force on the tension spring 6, causing the tension spring 6 to deform. In the process of the inverted trapezoidal water storage box 9 moving downward, the U-shaped frame 10 is gradually connected with multiple second heat dissipation holes 4, and heat is continued to be dissipated through the second heat dissipation holes 4. Since the U-shaped frame 10 is set at an angle, the possibility of rainwater entering the interior of the rain cover 2 is reduced. If the weather turns clear, the water can be drained through the drainage mechanism, and the first heat dissipation holes 3 can be used for heat dissipation again.

[0024] Specifically, refer to Figure 3 and Figure 5The drainage mechanism includes a water pipe 12, the top of the water pipe 12 is connected to the bottom end of the inverted trapezoidal water storage box 9, the side wall of the water pipe 12 is provided with a valve 13, the outer wall of the water pipe 12 is provided with a connecting ring 17, and the connecting ring 17 is fixedly connected to the side wall of the rain cover 2. After the weather turns clear, the staff can open the valve 13 to discharge the rainwater inside the inverted trapezoidal water storage box 9 through the water pipe 12, reset the inverted trapezoidal water storage box 9, and use the first heat dissipation hole 3 to dissipate heat.

[0025] Further, refer to Figure 2 and Figure 4 Two slide grooves 16 are provided on the side wall of the rain cover 2 near the inverted trapezoidal water storage box 9, and two sliders 11 are fixedly connected to the side wall of the inverted trapezoidal water storage box 9 near the rain cover 2. The two sliders 11 are slidably installed in the inside of the slide grooves 16 respectively. When the inverted trapezoidal water storage box 9 moves, the sliders 11 are driven to slide in the inside of the slide grooves 16 to ensure the movement trajectory of the inverted trapezoidal water storage box 9 and avoid deviation.

[0026] Furthermore, the water pipe 12 is a telescopic hose, and when the inverted trapezoidal water storage box 9 moves up and down, it will not affect the water pipe 12.

[0027] Further, refer to Figure 1 A baffle 15 is fixedly installed on the top of the rain cover 2, and the side wall of the baffle 15 is in contact with the side wall of the inverted trapezoidal water storage box 9. The baffle 15 can seal one side of the U-shaped frame 10 to prevent rainwater from entering the interior of the U-shaped frame 10.

[0028] Further, refer to Figure 1 A vent 14 is provided on the side wall of the rain cover 2 to facilitate the use of the centrifugal fan body 1 .

[0029] The working principle of the utility model is as follows:

[0030] When in use, the side of the rain cover 2 away from the inverted trapezoidal water storage box 9 is connected to the internal environment. In normal weather, heat can be dissipated through the first heat dissipation hole 3. In rainy days, rainwater enters the interior of the inverted trapezoidal water storage box 9. As the rainwater accumulates more and more, the inverted trapezoidal water storage box 9 moves down as a whole, which in turn exerts a certain force on the connecting plate 8, thereby driving the moving frame 7 to move out of the interior of the fixed box 5, which exerts a certain force on the tension spring 6, causing the tension spring 6 to deform. In the process of the inverted trapezoidal water storage box 9 moving downward, the U-shaped frame 10 is gradually connected to the multiple second heat dissipation holes 4, and the Heat is continued to be dissipated through the second heat dissipation hole 4, and since the U-shaped frame 10 is inclined, the possibility of rainwater entering the interior of the rain cover 2 is reduced. When the weather is clear, the staff can open the valve 13 to discharge the rainwater inside the inverted trapezoidal water storage box 9 through the water pipe 12. During the discharge process, under the reaction force of the tension spring 6, the movable frame 7 and the connecting plate 8 are driven to reset, which drives the inverted trapezoidal water storage box 9 to reset, and then the first heat dissipation hole 3 is used for heat dissipation. The baffle 15 can seal one side of the U-shaped frame 10 to prevent rainwater from entering the interior of the U-shaped frame 10.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rainproof multi-blade centrifugal fan, characterized in that: The centrifugal fan body (1) comprises a centrifugal fan body (1) and a rain cover (2), wherein the centrifugal fan body (1) is fixedly mounted inside the rain cover (2), a plurality of first heat dissipation holes (3) are provided on both sides of the rain cover (2), a second heat dissipation hole (4) is provided on the side wall of the rain cover (2), a fixing box (5) is fixedly mounted on both side outer walls of the rain cover (2), a tension spring (6) is fixedly mounted inside the fixing box (5), and a movable frame (7) is fixedly mounted at the bottom end of the tension spring (6), The movable frame (7) is slidably connected to the fixed box (5); a connecting plate (8) is fixedly connected to the bottom of the movable frame (7); an inverted trapezoidal water storage box (9) is movably mounted on the side wall of the rain cover (2); the bottom end of the inverted trapezoidal water storage box (9) is fixedly connected to the tops of the two connecting plates (8); a U-shaped frame (10) is fixedly mounted inside the inverted trapezoidal water storage box (9); and the U-shaped frame (10) is inclined; and a drainage mechanism is arranged at the bottom of the inverted trapezoidal water storage box (9).

2. The rainproof multi-blade centrifugal fan according to claim 1, characterized in that: The drainage mechanism comprises a water pipe (12), the top end of the water pipe (12) is connected to the bottom end of the inverted trapezoidal water storage box (9), the side wall of the water pipe (12) is provided with a valve (13), the outer wall of the water pipe (12) is provided with a connecting ring (17), and the connecting ring (17) is fixedly connected to the side wall of the rain cover (2).

3. The rainproof multi-blade centrifugal fan according to claim 1, characterized in that: The side wall of the rain cover (2) close to the inverted trapezoidal water storage box (9) is provided with two slide grooves (16), and the side wall of the inverted trapezoidal water storage box (9) close to the rain cover (2) is fixedly connected with two sliders (11), and the two sliders (11) are respectively slidably installed inside the slide grooves (16).

4. The rainproof multi-blade centrifugal fan according to claim 2, characterized in that: The water pipe (12) is a telescopic hose.

5. The rainproof multi-blade centrifugal fan according to claim 1, characterized in that: A baffle (15) is fixedly mounted on the top of the rain cover (2), and the side wall of the baffle (15) fits the side wall of the inverted trapezoidal water storage box (9).

6. The rainproof multi-blade centrifugal fan according to claim 1, characterized in that: A vent (14) is provided on the side wall of the rain cover (2).

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