A new type of waterproof fan

Abstract

This utility model relates to the field of fans, and more particularly to a novel waterproof fan, comprising a motor protective sleeve; a motor assembly disposed inside the motor protective sleeve; sealant filling the space between the motor assembly and the motor protective sleeve; and fan blades, the inner side of which has a magnetic ring that mates with the motor assembly, and the fan blades being fitted over the outer side of the motor protective sleeve. By completely placing the motor assembly inside the motor protective sleeve and filling the space between the motor assembly and the motor protective sleeve with sealant, this utility model achieves an IP68 level waterproof effect. This design effectively solves the problem of insufficient waterproof rating of traditional fans, enabling the waterproof fan of this utility model to be widely used in scenarios with stringent waterproof requirements, such as charging piles, inverters, communication equipment, and wind power generation systems, providing these devices with a reliable heat dissipation solution while preventing equipment damage due to water ingress.

Description

Technical Field

[0001] This utility model relates to the field of fans, and more particularly to a novel waterproof fan. Background Technology

[0002] Fans, as common ventilation and heat dissipation devices, are widely used in various electronic devices, mechanical equipment, and daily life. However, traditional fan technology still faces some problems in practical applications, which mainly manifest in the following aspects:

[0003] 1. Traditional fans generally have poor waterproof performance, typically achieving only a low waterproof rating or even lacking waterproof functionality altogether. This prevents traditional fans from functioning properly in humid, dusty, liquid-splashed, or completely submerged environments, significantly limiting their application scenarios. For example, in outdoor equipment, underwater equipment, or situations requiring frequent washing, traditional fans are easily damaged by water ingress, leading to equipment malfunctions or even safety accidents.

[0004] 2. In traditional fans, the motor assembly is usually in direct contact with metal parts such as the fan frame, which easily creates a current loop. When current passes through the bearing, it causes electro-corrosion, leading to accelerated wear on the bearing surface and ultimately bearing failure. Bearing damage not only causes the fan to rotate poorly and increase noise, but also shortens the overall lifespan of the fan and increases equipment maintenance costs. Summary of the Invention

[0005] To address the aforementioned issues, this utility model provides a novel waterproof fan, designed to improve the fan's waterproof performance and structural stability, thereby meeting broader application needs, enhancing user experience, and reducing operating costs.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a novel waterproof fan, comprising a motor protective sleeve; a motor assembly disposed inside the motor protective sleeve; a sealant filling the space between the motor assembly and the motor protective sleeve; and fan blades, wherein a magnetic ring is disposed on the inner side of the fan blades to cooperate with the motor assembly, and the fan blades are sleeved on the outer side of the motor protective sleeve.

[0007] Furthermore, the motor assembly includes a motor silicon steel sheet, a copper coil, and a PCBA control board. The copper coil is wound on the motor silicon steel sheet, and the PCBA control board is electrically connected to the copper coil to control the energizing sequence and current direction of the copper coil, thereby switching the coil's magnetic field.

[0008] Furthermore, the magnetic ring includes a magnetic adhesive and an iron shell, wherein the iron shell is fitted inside the fan blade, and the magnetic adhesive is attached to the inner wall of the iron shell and arranged around the motor assembly.

[0009] Furthermore, it also includes a fan frame, with a central tube at the center of the fan frame. The motor protective sleeve is fixedly fitted onto the central tube, and the central tube is movably connected to the fan blade.

[0010] Furthermore, it also includes a rotating shaft, one end of which is fitted to the center of the fan blade, and the other end of which is movably fitted inside the central tube. The upper and lower ends of the central tube are each provided with a first mounting slot, and the middle position of the central tube is provided with a second mounting slot, wherein the diameter of the first mounting slot is larger than the diameter of the second mounting slot; bearings are installed inside the first mounting slots at both the upper and lower ends, and the rotating shaft is movably fitted to the central tube via the bearings.

[0011] Furthermore, a mounting slot is provided at the center of the fan frame, the central tube is located at the center of the mounting slot, and a mounting sleeve is provided at the bottom of the motor protective sleeve, which is configured in the mounting slot.

[0012] Furthermore, one end of the rotating shaft passes through a bearing located at the lower end of the central tube and connects with a retaining ring to achieve a limiting position.

[0013] Furthermore, a spring is also installed in the first mounting slot at the lower end of the middle tube. One end of the spring abuts against the edge of the first mounting slot, and the other end abuts against the bearing.

[0014] Furthermore, the fan frame and the central tube are integrally formed.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. By completely housing the motor assembly inside the motor protective sleeve and filling the space between the motor assembly and the protective sleeve with sealant, this invention achieves an IP68 waterproof rating. This design effectively solves the problem of insufficient waterproof rating in traditional fans, enabling the waterproof fan of this invention to be widely used in scenarios with stringent waterproof requirements, such as charging piles, inverters, communication equipment, and wind power generation systems, providing these devices with a reliable heat dissipation solution while preventing equipment damage due to water ingress.

[0017] 2. Through the combined use of the motor protective sleeve and sealant described above, an effective physical isolation is formed between the motor assembly and the fan housing tube. This isolation not only prevents moisture and external impurities from entering the motor assembly, but more importantly, it blocks direct electrical contact between the motor assembly and the fan housing tube. In traditional fan designs, the motor assembly may form a current loop through the fan housing tube, leading to electro-corrosion. However, in this invention, because the motor assembly and the fan housing tube are effectively isolated, current cannot form a loop through the tube, thus fundamentally avoiding the problem of electro-corrosion. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the exploded structure of a new type of waterproof fan.

[0019] Figure 2 This is a cross-sectional structural diagram of a new type of waterproof fan.

[0020] Figure 3 This is a schematic diagram of the central tube structure.

[0021] Explanation of reference numerals: 1. Fan frame; 2. Motor protective sleeve; 3. Motor assembly; 31. Motor silicon steel sheet; 32. PCBA control board; 4. Fan blade; 5. Magnetic ring; 51. Glue magnet; 52. Iron shell; 6. Sealant; 7. Bearing; 8. Buckle; 9. Spring; 10. Middle tube; 110. Rotating shaft; 101. First mounting slot; 102. Second mounting slot. Detailed Implementation

[0022] Please see Figure 1-3 As shown, this utility model relates to a novel waterproof fan, including a motor protective sleeve 2; a motor assembly 3 disposed inside the motor protective sleeve 2; a sealant 6 filled between the motor assembly 3 and the motor protective sleeve 2; and a fan blade 4, the inner side of which is provided with a magnetic ring 5 that cooperates with the motor assembly 3, and the fan blade 4 is sleeved on the outer side of the motor protective sleeve 2.

[0023] By completely housing the motor assembly 3 inside the motor protective sleeve 2 and filling the space between the motor assembly 3 and the motor protective sleeve 2 with sealant 6, a complete seal of the motor assembly 3 is achieved. This design effectively prevents moisture and external impurities from entering the motor assembly 3, thus achieving an IP68 waterproof rating. This means that the waterproof fan can operate normally in harsh environments such as humid, dusty, and even underwater conditions, greatly expanding its application range.

[0024] The motor protective sleeve 2 not only serves a waterproof function but also blocks direct contact between the motor assembly 3 and the central tube 10 of the fan frame 1, thus preventing current from forming a circuit through the central tube 10. This design effectively reduces damage to the bearing 7 caused by electro-corrosion, extending its service life. Simultaneously, it reduces noise and vibration, improving the stability and reliability of fan operation. The motor protective sleeve 2 provides additional support and protection for the motor assembly 3, making it more stable during operation. Furthermore, the use of sealant 6 enhances the overall structural integrity, further improving the fan's reliability and durability.

[0025] Furthermore, the motor assembly 3 includes a motor silicon steel sheet 31, a copper coil, and a PCBA control board 32. The copper coil is wound on the motor silicon steel sheet 31, and the PCBA control board 32 is electrically connected to the copper coil to control the energizing sequence and current direction of the copper coil, so as to realize the switching of the coil magnetic field.

[0026] The motor assembly 3, through the coordinated operation of components such as the motor silicon steel sheet 31, copper coil, and PCBA control board 32, generates a magnetic field and drives the fan blade 4 to rotate. The motor silicon steel sheet 31 is used to concentrate and guide the magnetic field. The copper coil generates a magnetic field after being energized, while the PCBA control board 32 precisely controls the energizing sequence and current direction of the copper coil to achieve switching of the coil's magnetic field. Finally, the fan blade 4 rotates under the driving force generated by the magnetic ring 5, thereby achieving the purpose of heat dissipation or ventilation. At the same time, the motor assembly 3 is placed inside the motor protective sleeve 2 and sealed with sealant 6 to ensure its waterproof effect, enabling it to operate stably in various environments.

[0027] Furthermore, the magnetic ring 5 includes a plastic magnet 51 and an iron shell 52. The iron shell 52 is fitted inside the fan blade 4, while the plastic magnet 51 is attached to the inner wall of the iron shell 52 and arranged around the motor assembly 3. The working principle of the magnetic ring 5 is mainly based on the effect of a magnetic field. When the motor assembly 3 is powered on, the PCBA control board 32 precisely controls the energizing sequence and current direction of the copper coil, thereby switching the magnetic field of the coil. This constantly switching magnetic field interacts with the fixed magnetic field generated by the plastic magnet 51 in the magnetic ring 5, generating a periodic driving force. This driving force acts on the fan blade 4, causing it to rotate continuously and generate airflow. The iron shell 52 plays a crucial role in this process, providing stable support for the plastic magnet 51, ensuring that the magnetic ring 5 can work stably and continuously provide power for the rotation of the fan blade 4.

[0028] Furthermore, a spring 9 is installed in the first mounting slot 101 located at the lower end of the central tube 10. One end of the spring 9 abuts against the edge of the first mounting slot 101, and the other end abuts against the bearing 7. The fan frame 1, as the basic frame of the fan, provides a stable support platform for the central tube 10. The central tube 10 and the fan frame 1 are integrally formed; this design not only enhances the rigidity of the overall structure but also ensures the positional accuracy of the central tube 10. Of course, the central tube 10 can be designed as a copper or other metal component according to actual production needs. Moreover, the central tube 10 has two first mounting slots 101 and one second mounting slot 102 inside. The first mounting slots 101 are used to install the bearing 7, and their larger diameter facilitates the installation and positioning of the bearing 7.

[0029] In this embodiment, the motor protective sleeve 2 is integrally molded from plastic, perfectly encasing the motor assembly 3. The internal sealant 6 completely isolates the motor assembly 3 from the external environment. This potting and sealing method effectively prevents the intrusion of moisture and dust, ensuring the stable operation of the motor assembly 3 in harsh environments.

[0030] In this embodiment, the rotating shaft 110 serves as the power transmission component between the fan blade 4 and the motor assembly 3. One end of the shaft is precisely connected to the center of the fan blade 4, while the other end is movably mounted inside the central tube 10 via a bearing 7. The bearings 7 are precisely installed in the first mounting slots 101 at both the upper and lower ends of the central tube 10, providing low-friction, high-precision rotational support for the rotating shaft 110 and ensuring that the fan blade 4 can rotate smoothly and efficiently.

[0031] Furthermore, one end of the rotating shaft 110 passes through the bearing 7 located at the lower end of the central tube 10 and connects with the retaining ring 8 to achieve a limiting effect. The retaining ring 8, through its connection with the rotating shaft 110, effectively restricts the axial degree of freedom of the rotating shaft 110 inside the central tube 10. Since the fan blade 4 is mounted on the rotating shaft 110, the retaining ring 8 also indirectly fixes the fan blade 4. When the rotating shaft 110 is subjected to axial force and attempts to move along the axial direction of the central tube 10, the retaining ring 8 acts as a reliable "stop," blocking its movement and thus preventing the fan blade 4 from falling off.

[0032] Furthermore, a spring 9 is also installed in the first mounting slot 101 located at the lower end of the middle tube 10. One end of the spring 9 abuts against the edge of the first mounting slot 101, and the other end abuts against the bearing 7.

[0033] When the fan is running, the bearing 7 is subjected to the force generated by rotation and external vibrations. The spring 9, utilizing its elastic properties, provides continuous support to the bearing 7, effectively reducing vibration and displacement and ensuring stable operation. Furthermore, the spring 9 absorbs and disperses additional vibrations and impacts generated during fan operation, such as fan imbalance or external vibrations, thereby reducing the impact on the bearing 7 and other fan components, protecting the fan from damage. Through the support and shock absorption provided by the spring 9, the fan maintains a more stable operating state, reducing noise and vibration, improving fan efficiency and lifespan, and providing users with a more reliable and comfortable user experience.

[0034] Furthermore, a mounting slot is provided at the center of the fan frame 1, and the middle tube 10 is located at the center of the mounting slot. At the same time, a mounting sleeve is provided at the bottom of the motor protective sleeve 2, and the mounting sleeve is configured in the mounting slot.

[0035] The mounting slot at the center of the fan frame 1 forms a precise fit with the mounting sleeve at the bottom of the central tube 10 and the motor protective sleeve 2. This design not only ensures that the central tube 10 can be stably positioned at the center of the fan frame 1, but also achieves precise installation of the motor protective sleeve 2 on the fan frame 1, thereby improving the overall stability and installation accuracy of the fan structure. Through the synergistic effect of the motor protective sleeve 2 and the sealant 6, the motor assembly 3 is completely enclosed and sealed, achieving isolation from the external environment. This design enables the fan to achieve an IP68 waterproof rating, allowing it to operate normally in humid, dusty, and even completely submerged environments, greatly expanding the fan's application range.

[0036] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A novel waterproof fan, characterized in that: Including motor protective sleeve; A motor assembly, wherein the motor assembly is disposed inside the motor protective sleeve; A sealant, which is filled between the motor assembly and the motor protective sleeve; The fan blade has a magnetic ring on its inner side that cooperates with the motor assembly, and the fan blade is sleeved on the outside of the motor protective sleeve. The fan frame has a central tube at its center, and the motor protective sleeve is fixedly fitted onto the central tube. At the same time, the central tube is movably connected to the fan blade. A mounting slot is provided at the center of the fan frame, and the central tube is located at the center of the mounting slot. At the same time, a mounting sleeve is provided at the bottom of the motor protective sleeve, and the mounting sleeve is configured in the mounting slot.

2. The novel waterproof fan according to claim 1, characterized in that: The motor assembly includes a motor silicon steel sheet, a copper coil, and a PCBA control board. The copper coil is wound on the motor silicon steel sheet, and the PCBA control board is electrically connected to the copper coil to control the energizing sequence and current direction of the copper coil, thereby switching the coil's magnetic field.

3. A novel waterproof fan according to claim 2, characterized in that: The magnetic ring includes a magnetic adhesive and an iron shell, wherein the iron shell is fitted inside the fan blade, and the magnetic adhesive is attached to the inner wall of the iron shell and arranged around the motor assembly.

4. A novel waterproof fan according to claim 3, characterized in that: It also includes a rotating shaft, one end of which is fitted to the center of the fan blade, and the other end of which is movably fitted inside the central tube.

5. A novel waterproof fan according to claim 4, characterized in that: The upper and lower ends of the inner tube are provided with first mounting slots, and the middle position of the inner tube is provided with a second mounting slot. The diameter of the first mounting slot is larger than the diameter of the second mounting slot. Bearings are installed inside the first mounting slots at the upper and lower ends, and the rotating shaft is movably mounted with the inner tube through the bearings.

6. A novel waterproof fan according to claim 2, characterized in that: One end of the rotating shaft passes through a bearing located at the lower end of the central tube and is connected to a retaining ring to achieve a limiting position.

7. A novel waterproof fan according to claim 2, characterized in that: A spring is also installed in the first mounting slot at the lower end of the middle tube. One end of the spring abuts against the edge of the first mounting slot, and the other end abuts against the bearing.

8. A novel waterproof fan according to claim 1, characterized in that: The fan frame and the central tube are molded as one piece.

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