Cooling fan with drainage function

Abstract

The utility model relates to a cooling fan with a drainage function, which comprises a bottom shell, an upper cover and a fan body, the bottom shell is detachably connected with the upper cover to form a mounting cavity for mounting the fan body, the bottom shell is matched with the upper cover to form an air outlet, an air duct is formed between the air outlet and the fan body, and the fan body is arranged in the air duct. A water outlet is formed in the position, corresponding to the lower portion of the fan body, of the bottom shell, two first baffles are oppositely arranged between the air channel and the water outlet, and a flow guide groove is formed between the two first baffles and communicated with the air channel and the water outlet. The flow guide groove is formed by the first baffle and communicated with the air channel and the water outlet, so that liquid entering the bottom shell is discharged in time through the air channel, the flow guide groove and the water outlet, the liquid is prevented from being accumulated in the bottom shell, and the fan body is prevented from being damaged by the liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation fans, and in particular to a heat dissipation fan with a drainage function. Background Art

[0002] With technological advancements and consumers' pursuit of convenience, in-car wireless chargers have become an indispensable accessory in modern cars. These devices are typically placed in the vehicle's center console, allowing drivers and passengers to easily charge their phones or other wireless charging devices while driving. However, in-car wireless chargers often operate in complex environments, often surrounded by various debris, such as liquid beverage bottles and food packaging.

[0003] In particular, if liquids (such as beverages) are accidentally splashed or leaked near a wireless charger, they may penetrate the interior of the wireless charger, particularly the cooling fan area. As a key heat dissipation component of an in-vehicle wireless charger, the fan is responsible for dissipating heat generated during operation to ensure stable operation. However, once liquid accumulates inside the fan, it not only affects its heat dissipation efficiency but may also cause unusual noises during operation and even lead to safety hazards such as short circuits. Utility Model Content

[0004] The purpose of the utility model is to provide a cooling fan with a drainage function, wherein a guide groove is formed by setting a first baffle, and the guide groove connects the air duct and the drain outlet, so that the liquid entering the bottom shell is discharged in time through the air duct, the guide groove and the drain outlet, preventing the liquid from accumulating in the bottom shell, thereby avoiding damage to the fan body caused by the liquid.

[0005] A cooling fan with a drainage function includes a bottom shell, an upper cover and a fan body. The bottom shell and the upper cover are detachably connected to form a mounting cavity for mounting the fan body. The bottom shell and the upper cover cooperate to form an air outlet. An air duct is formed between the air outlet and the fan body. The bottom shell is provided with a drain outlet below the fan body. Two first baffles are provided opposite to each other between the air duct and the drain outlet. A guide groove is formed between the two first baffles. The guide groove connects the air duct and the drain outlet.

[0006] In the above technical solution, the airflow generated by the fan body flows through the air duct to the air outlet, and then blows toward the electronic device, achieving a heat dissipation function. At the same time, external water droplets and other liquids will enter the bottom shell through the air outlet. When these liquids enter the air outlet, they will flow along the air duct. Two opposing first baffles are provided between the air duct and the drain outlet, and a guide groove is formed between the two first baffles. When the liquid reaches one end of the air duct close to the fan body, it will continue to flow along the guide groove and eventually be discharged from the bottom shell through the drain outlet. Under the action of the guide groove formed by the first baffle, the liquid flowing into the bottom shell is discharged from the bottom shell in an orderly and timely manner, preventing the liquid from accumulating in the bottom shell, thereby avoiding possible damage to the fan body. The heat dissipation fan provided by the utility model achieves a heat dissipation function, and forms a guide groove by the first baffle. The guide groove connects the air duct and the drain outlet, so that the liquid entering the bottom shell is discharged in a timely manner through the air duct, the guide groove and the drain outlet, preventing the liquid from accumulating in the bottom shell, thereby avoiding damage to the fan body caused by the liquid.

[0007] Furthermore, a second baffle is provided on the lower end surface of the bottom shell near the drain outlet.

[0008] In the above technical solution, the second baffle arranged on the lower end surface of the bottom shell near the drain outlet forms an additional waterproof barrier, which helps prevent the liquid from flowing out of the drain outlet and spreading to other areas of the bottom shell, thereby avoiding circuit short circuit or damage to other components.

[0009] Furthermore, third baffles extend from both ends of the second baffle toward the edge of the bottom shell.

[0010] In the above technical solution, a third baffle is provided and extends from one end of the second baffle to the edge of the bottom shell, forming a continuous waterproof barrier with the second baffle, further preventing the liquid from flowing to other areas of the bottom shell and affecting the electronic devices therein.

[0011] Furthermore, the bottom shell is provided with an air inlet below the fan body.

[0012] In the above technical solution, the air inlet is set below the fan body to ensure that air can smoothly enter the bottom shell from the bottom and generate wind flow through the blades on the fan body, thereby achieving the effect of heat dissipation or ventilation. When the fan body is running.

[0013] Furthermore, the air inlet is provided with a plurality of ribs, which divide the air inlet into a plurality of through holes, one of which is formed as the drain outlet.

[0014] In this technical solution, by designing several ribs on the air inlet, the air inlet is divided into several through-holes, allowing each through-hole to receive a relatively independent airflow. This helps increase the contact area between the fan body and the airflow, improving heat exchange efficiency. Furthermore, by configuring one of the through-holes in the air inlet as a drain outlet, the cooling fan maintains a compact design while providing effective drainage capabilities. This avoids the additional space and complex structure required for an additional drain outlet, improving the overall integration and aesthetics of the product.

[0015] Furthermore, it includes at least one fourth baffle, and the air inlet is arranged in the area surrounded by the second baffle, the third baffle and the fourth baffle.

[0016] In the above technical solution, when the fan body is running, it will inevitably carry a part of the liquid into the installation cavity. The liquid entering the installation cavity will flow out of the bottom shell through the air inlet. The second baffle, the third baffle and the fourth baffle together form a protective area, so that the liquid entering the installation cavity is restricted to flow out of the bottom shell within this protective area and will not spread to other positions of the bottom shell, thereby avoiding the risk of circuit short circuit or component damage.

[0017] Furthermore, the distance between the two first baffles gradually decreases from the air duct to the drain outlet.

[0018] In the above technical solution, the gradual reduction in the diameter of the diversion groove helps to accelerate the drainage process and reduce the risk of water accumulation.

[0019] Furthermore, the bottom surface of the air duct is formed as a guide surface with a curvature.

[0020] In the above technical solution, since the bottom surface of the air duct is a curved guide surface, it plays a guiding role. When the liquid passes through the air duct, this guide surface can guide the liquid to flow along a predetermined path, ensuring that the liquid can smoothly pass through the air duct and flow into the guide groove.

[0021] Compared to the prior art, the present invention offers the following advantages: by providing an air outlet and air duct, when external water droplets or other liquids enter the air outlet, these liquids flow along the air duct into the interior of the bottom casing. Two opposing first baffles are positioned between the air duct and the drain outlet, forming a guide groove between the two first baffles. When liquid reaches the end of the air duct near the fan body, it continues to flow along the guide groove and is ultimately discharged from the bottom casing through the drain outlet. The guide groove formed by the baffles allows liquid entering the bottom casing to be discharged in an orderly and timely manner, preventing liquid accumulation within the bottom casing and potentially damaging the fan body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is a schematic diagram of the assembly of a heat dissipation fan with drainage function according to an embodiment of the present utility model.

[0023] Figure 2 This is a cross-sectional schematic diagram of a heat dissipation fan with drainage function according to an embodiment of the present invention.

[0024] Figure 3 This is a three-dimensional diagram of the bottom shell of an embodiment of the present utility model.

[0025] Figure 4 This is a schematic diagram of the bottom structure of the bottom shell of an embodiment of the present utility model.

[0026] Figure 5 This is a schematic diagram of the exploded structure of an embodiment of the present utility model.

[0027] Explanation of Figure Numbers

[0028] 1. Bottom shell; 101. Air outlet; 102. Air duct; 1021. Guide surface; 103. Drain outlet; 104. First baffle; 105. Guide groove; 106. Second baffle; 107. Third baffle; 108. Air inlet; 109. Ridge; 1010. Fourth baffle; 1011. First mounting hole; 1012. Third mounting hole;

[0029] 2. Upper cover; 201. Second mounting hole;

[0030] 3. Fan body; 4. Installation cavity. DETAILED DESCRIPTION

[0031] The following is a detailed description of the cooling fan with drainage function of the present invention in conjunction with specific embodiments and accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0032] Please refer to Figures 1 to 3 In a preferred embodiment, the heat dissipation fan with drainage function of the present invention includes a bottom shell 1, an upper cover 2 and a fan body 3. The bottom shell 1 and the upper cover 2 are detachably connected to form a mounting cavity 4 for mounting the fan body 3. The bottom shell 1 and the upper cover 2 cooperate to form an air outlet 101. An air duct 102 is formed between the air outlet 101 and the fan body 3. A drain port 103 is provided below the bottom shell 1 corresponding to the fan body 3. Two first baffles 104 are provided opposite to each other between the air duct 102 and the drain port 103. A guide groove 105 is formed between the two first baffles 104. The guide groove 105 connects the air duct 102 and the drain port 103.

[0033] In actual use of the above structure, the airflow generated by the fan body 3 flows through the air duct 102 to the air outlet 101, and then blows toward the electronic equipment to achieve heat dissipation. At the same time, external liquids such as water droplets will enter the interior of the bottom shell 1 through the air outlet 101. When these liquids enter the air outlet 101, they will flow along the air duct 102. Two opposing first baffles 104 are provided between the air duct 102 and the drain outlet 103. A guide groove 105 is formed between the two first baffles 104. When the liquid reaches the end of the air duct 102 near the fan body 3, it will continue to flow along the guide groove 105 and eventually be discharged from the bottom shell 1 through the drain outlet 103. Under the action of the guide groove 105 formed by the first baffle 104, the liquid that flows into the bottom shell 1 is discharged from the bottom shell 1 in an orderly and timely manner, preventing the liquid from accumulating in the bottom shell, thereby avoiding possible damage to the fan body 3. The utility model provides a heat dissipation fan that realizes the heat dissipation function, and forms a guide groove 105 through the first baffle 104, and the guide groove 105 connects the air duct 102 and the drain port 103, so that the liquid entering the bottom shell 1 is discharged in time through the air duct, the guide groove and the drain port, preventing the liquid from accumulating in the bottom shell, thereby avoiding damage to the fan body 3 caused by the liquid.

[0034] It should be noted that the air duct 102 of this embodiment can serve as both a drainage channel and an air outlet channel, simplifying the structure of the cooling fan and reducing production costs. Specifically, when the air duct 102 serves as a drainage channel, external liquid enters the bottom case 1 through the air outlet 101. This liquid flows along the air duct 102. When it reaches the bottom end of the air duct 102 (i.e., the end near the fan body 3), it continues to flow under the action of the guide groove 105 until it reaches the drainage port 103 and flows out of the bottom case 1. When the air duct 102 serves as an air outlet channel, the fan body 3 generates airflow, which flows through the air duct 102 to the air outlet 101 and blows toward the electronic equipment, achieving the heat dissipation function.

[0035] Please refer to Figure 4 In this embodiment, a second baffle is provided on the lower end surface of the bottom housing 1 near the drain outlet 103. This second baffle 106, located near the drain outlet 103, forms an additional waterproof barrier, helping to prevent liquid from flowing out of the drain outlet 103 and spreading to other areas of the bottom housing 1, thereby preventing electrical shorts or other component damage. In other words, the second baffle 106 restricts the flow of liquid, ensuring that the liquid exits the bottom housing 1 along a predetermined path.

[0036] At the same time, third baffles 107 extend from both ends of the second baffle 106 toward the edge of the bottom case 1. In this embodiment, by providing the third baffle 107 and extending it from one end of the second baffle 106 to the edge of the bottom case 1, it forms a continuous waterproof barrier with the second baffle 106, further preventing liquid from flowing to other areas of the bottom case 1 and affecting the electronic components therein. It should be noted that in this embodiment, the drain outlet 103 is formed in a fan shape, and the second baffle 106 is positioned on the curved edge of the drain outlet 103. To further enhance the waterproofing effect, the shape of the second baffle 106 conforms to the curved edge of the drain outlet 103 (i.e., it is formed in an arc shape). The third baffle 107 extends in a straight line to the edge of the bottom case 1.

[0037] Please refer to Figure 3 The bottom shell 1 is provided with an air inlet 108 below the fan body 3. The air inlet is arranged below the fan body to ensure that air can smoothly enter the bottom shell from the bottom and generate wind flow through the blades on the fan body to achieve heat dissipation or ventilation. When the fan body is running.

[0038] It should be noted that in this embodiment, the air inlet 108 is provided with a plurality of ribs 109. These ribs 109 divide the air inlet 108 into a plurality of through-holes, one of which serves as a drain outlet 103. By designing the ribs 109 on the air inlet 108 to divide the air inlet 108 into a plurality of through-holes, each through-hole receives a relatively independent airflow, thereby increasing the contact area between the fan body 3 and the airflow and improving heat exchange efficiency. Furthermore, the ribs 109 act as reinforcing ribs to support the bottom shell 1, enhancing its structural strength and making it more durable. This helps to resist external shock and vibration, protecting the electronic components and mechanical structure within the fan. By configuring one of the through-holes in the air inlet 108 as a drain outlet 103, the cooling fan maintains a compact design while providing effective drainage capabilities. This avoids the additional space and complex structure required by the additional drain outlet 103, thereby improving the overall integration and aesthetics of the product.

[0039] Please refer to Figure 4 This embodiment further includes at least one fourth baffle 1010, and the air inlet 108 is disposed within the area enclosed by the second baffle 106, the third baffle 107, and the fourth baffle 1010. When the fan body 3 is in operation, it inevitably carries some liquid into the installation cavity 4. The liquid entering the installation cavity 4 flows out of the bottom case 1 through the air inlet 108. The second baffle 106, the third baffle 107, and the fourth baffle 1010 together form a protective area, which confines the liquid in the installation cavity 4 to flow out of the bottom case 1 within this protective area and prevents it from spreading to other locations in the bottom case 1, thereby avoiding the risk of short circuits or component damage.

[0040] Please refer to Figure 3 In this embodiment, the distance between the two first baffles 104 gradually decreases from the air duct 102 to the drain outlet 103. The gradually decreasing diameter of the guide groove 105 helps to accelerate the drainage process and reduce the risk of water accumulation.

[0041] Please refer to Figure 2 The bottom surface of the air duct 102 is formed as a curved guide surface 1021. Since the bottom surface of the air duct 102 is a curved guide surface 1021, it acts as a guide. When liquid passes through the air duct 102, the guide surface 1021 can guide the liquid along a predetermined path, ensuring that the liquid can smoothly pass through the air duct 102 and flow into the guide groove 105.

[0042] Please refer to Figure 5 The bottom shell 1 is provided with a first mounting hole 1011, and the upper cover 2 is provided with a second mounting hole 201. The first mounting hole 1011 and the second mounting hole 201 are matched with fasteners to make the bottom shell 1 and the upper cover 2 detachable. The bottom shell 1 and the upper cover 2 are detachably connected by fasteners. This design makes the assembly and maintenance of the fan more convenient. Users can easily disassemble and reassemble the fan as needed to clean, repair or replace internal components. When assembling the fan, the user aligns and places the bottom shell 1 and the upper cover 2 together, and then connects them together with fasteners. The fasteners pass through the first mounting hole 1011 and the second mounting hole 201 and are fixed together by accessories such as nuts or washers. In this way, the bottom shell 1 and the upper cover 2 form a stable and reliable structure that can support the normal operation of the fan.

[0043] The bottom case 1 also has a third mounting hole 1012, which connects the bottom case 1 to an external structure. The design of third mounting hole 1012 allows the bottom case 1 to be securely connected to an external structure (such as a computer chassis, heat sink, or other fixture). This connection not only ensures the fan's stability during operation but also prevents displacement or damage due to vibration or external impact.

[0044] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0046] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0047] Although the present invention has been described with reference to the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above content. Therefore, all such substitutions, modifications and variations are included within the spirit and scope of the appended claims.

Claims

1. A heat dissipation fan with a drainage function, comprising a bottom shell, an upper cover, and a fan body, wherein the bottom shell and the upper cover are detachably connected to form an installation cavity for installing the fan body, characterized in that: The bottom shell and the upper cover cooperate to form an air outlet, an air duct is formed between the air outlet and the fan body, a drain outlet is provided on the bottom shell corresponding to the lower side of the fan body, two first baffles are provided opposite to each other between the air duct and the drain outlet, a guide groove is formed between the two first baffles, and the guide groove connects the air duct and the drain outlet.

2. The heat dissipation fan with drainage function according to claim 1, characterized in that: A second baffle is provided on the lower end surface of the bottom shell near the drain outlet.

3. The heat dissipation fan with drainage function according to claim 2, characterized in that: A third baffle extends from both ends of the second baffle toward the edge of the bottom shell.

4. The heat dissipation fan with drainage function according to claim 3, characterized in that: The bottom shell is provided with an air inlet below the fan body.

5. The heat dissipation fan with drainage function according to claim 4, characterized in that: The air inlet is provided with a plurality of ribs, which divide the air inlet into a plurality of through holes, one of which is formed as the drain outlet.

6. The heat dissipation fan with drainage function according to claim 4, characterized in that: It also includes at least one fourth baffle, and the air inlet is arranged in an area surrounded by the second baffle, the third baffle and the fourth baffle.

7. The heat dissipation fan with drainage function according to claim 1, characterized in that: The distance between the two first baffles gradually decreases from the air duct to the drain outlet.

8. The heat dissipation fan with drainage function according to claim 1, characterized in that: The bottom surface of the air duct is formed as a guide surface with an arc.

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