Large-suction-force heat dissipation waterproof dust collection fan

Abstract

The utility model discloses a large suction heat dissipation waterproof dust collection fan which comprises a fan assembly and a brushless motor assembly used for driving, the fan assembly comprises an upper cover, fan blades, a lower cover and a rear cover, the fan blades are arranged between the upper cover and the lower cover, and the upper cover and the lower cover are connected through a buckle. The brushless motor assembly comprises a motor, a waterproof ring, waterproof grease, a wave-shaped gasket, heat-conducting glue and a PCB, and has the advantages that the structure is compact, the practicability is high, the copper sleeve is connected with the lower cover in a riveting mode, so that the fan assembly and the brushless motor assembly are combined, the joint of the shaft body is sealed through the waterproof ring and the waterproof grease, and the service life of the shaft body is prolonged. The inner spaces are independent, water and dust are prevented from entering the brushless motor assembly, the motor and the PCB achieve the heat dissipation effect through heat conduction of the lower cover air channel through the copper sleeve and the heat-conducting glue, and therefore the dust collection fan operates stably.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaner fan technology, specifically to a high-suction, heat-dissipating, waterproof vacuum cleaner fan. Background Technology

[0002] Currently, vacuum cleaner fans mainly consist of two parts: a fan and a motor. They are also divided into two main categories: dry vacuum cleaners and wet / dry vacuum cleaners. Some of these combine wet and dry functions. For example, Chinese patent CN208442047U discloses a small wet / dry vacuum cleaner fan. Its technical solution integrates the air guide wheel structure with a waterproof isolation cover, which is beneficial for miniaturization and portability of wet / dry vacuum cleaners. When designing wet / dry vacuum cleaners, the fan structure is relatively simple, and the permanent magnet motor is a readily available and mature product, making it more flexible and feasible than existing wet / dry vacuum cleaner fans. It can be designed as a small horizontal machine, a vertical machine, or a handheld portable machine. Chinese patent CN215383713U discloses a waterproof vacuum cleaner fan for a sweeper. The base plate and the motor protective shell are seamless, and the exposed part of the PCB is seamless with the motor protective shell, forming a sealed space that can be filled. The waterproof effect is achieved through filling. It is small in size and the waterproof structure does not take up space.

[0003] While existing technologies offer both wet and dry operation, they still suffer from the following shortcomings in high-suction, heat-dissipating, and waterproof vacuum cleaners: Existing vacuum cleaners utilize both permanent magnet motors and brushless motors. The permanent magnet motor requires additional cooling fins installed inside, increasing the overall size of the vacuum cleaner. Furthermore, both the permanent magnet motor and the brushless motor are exposed, making it difficult to guarantee dust and water resistance. Therefore, this paper proposes a high-suction, heat-dissipating, and waterproof vacuum cleaner to address these issues. Utility Model Content

[0004] To address the problems mentioned above, the present invention provides a high-suction, heat-dissipating, waterproof dust collector, comprising: a fan assembly and a brushless motor assembly for driving; the fan assembly includes an upper cover, a fan blade, a lower cover, and a rear cover; the fan blade is disposed between the upper and lower covers, which are connected by snap-fit; the brushless motor assembly includes a motor, a waterproof ring, waterproof grease, a wave-shaped gasket, thermally conductive adhesive, and a PCB circuit board; the motor is installed between the lower and rear covers; the waterproof ring is disposed at the connection between the lower cover and the motor output end; the waterproof grease is disposed between the bearing and the waterproof ring; the thermally conductive adhesive is disposed between the PCB circuit board and the lower cover; and the PCB circuit board is fixedly connected to the outer bottom of the lower cover by screws.

[0005] As a preferred technical solution of this utility model, the motor includes a retaining ring, a shaft body, a copper sleeve, a stator, a magnetic ring, an outer rotor, and a balance block. The shaft body is provided with retaining rings at both ends, and bearings are sleeved on both ends of the shaft body on one side of the retaining rings. The copper sleeve is sleeved on the outside of the shaft body, the stator is sleeved on the outside of the copper sleeve, and the magnetic ring is disposed on the inside of the outer rotor.

[0006] As a preferred embodiment of this utility model, the two ends of the shaft body are respectively connected to the lower cover and the balance block through bearings, the top of the copper sleeve is connected to the lower cover, and the balance block is connected to the inside of the rear cover.

[0007] As a preferred embodiment of this utility model, a wave-shaped gasket is provided above the copper sleeve.

[0008] As a preferred embodiment of this utility model, the bottom end of the outer rotor is movably sleeved inside the balance block, and the top end of the outer rotor is connected to the shaft body.

[0009] As a preferred technical solution of this utility model, the rear cover is fixedly installed on the outer side of the bottom of the lower cover by screws, an air outlet is provided on one side between the upper cover and the lower cover, and an air inlet is provided at the middle of the top of the upper cover.

[0010] As a preferred embodiment of this utility model, the PCB circuit board is connected with wires, the upper cover is made of plastic, the lower cover is made of aluminum alloy, and the fan blade and rear cover are made of metal.

[0011] This utility model has the following advantages: It has a compact structure and strong practicality. The copper sleeve is riveted to the lower cover to combine the fan assembly and the brushless motor assembly. The connection of the shaft body is sealed by a waterproof ring and waterproof grease, making their internal spaces independent and preventing water and dust from entering the brushless motor assembly. The motor and PCB circuit board are respectively heat-dissipated through the copper sleeve and thermally conductive adhesive through the air duct of the lower cover, so as to achieve stable operation of the dust collector. In addition, the blades of the fan have a smaller installation angle, the blades are smoothly curved, and the thickness is thin and uniform, which effectively reduces the noise when the fan is running. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0013] Figure 2 This is an exploded structural diagram of a preferred embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of the disassembly structure of the upper cover according to a preferred embodiment of the present invention.

[0015] Explanation of reference numerals in the attached diagram: 1. Top cover; 2. Fan blade; 3. Waterproof ring; 4. Waterproof grease; 5. Snap ring; 6. Shaft body; 7. Bearing; 8. Wave-shaped gasket; 9. Copper sleeve; 10. Air outlet; 11. Bottom cover; 12. Stator; 13. Magnetic ring; 14. Outer rotor; 15. Balance block; 16. Thermal conductive adhesive; 17. PCB circuit board; 18. Air inlet; 19. Rear cover; 21. Wire. Detailed Implementation

[0016] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Please refer to the following: Figures 1-3This utility model discloses a high-suction, heat-dissipating, waterproof vacuum cleaner fan, comprising: a fan assembly and a brushless motor assembly for driving it. The fan assembly includes an upper cover 1, a fan blade 2, a lower cover 11, and a rear cover 19. The fan blade 2 is disposed between the upper cover 1 and the lower cover 11, which are connected by snap-fit. The brushless motor assembly includes a motor, a waterproof ring 3, waterproof grease 4, a wave-shaped gasket 8, a bearing 7, thermally conductive adhesive 16, and a PCB circuit board 17. The motor is installed between the lower cover 11 and the rear cover 19. The waterproof ring 3 is disposed at the connection between the lower cover 11 and the motor output end. The waterproof grease 4 is disposed between the bearing 7 and the waterproof ring 3. The thermally conductive adhesive 16 is disposed between the PCB circuit board 17 and the lower cover 11. The PCB circuit board 17 is fixedly connected to the outer bottom of the lower cover 11 by screws. This design not only provides a fully enclosed sealed protection for the PCB circuit board 17 and the motor but also ensures that the PCB circuit board 17 can transfer heat to the interior of the lower cover 11, thereby facilitating heat dissipation through the fan blade 2.

[0020] Combination Figure 2 As shown, the motor includes a retaining ring 5, a shaft body 6, a bearing 7, a copper sleeve 9, a stator 12, a magnetic ring 13, an outer rotor 14, and a balance block 15. Retaining rings 5 ​​are provided at both ends of the shaft body 6. Bearings 7 are sleeved on one side of the retaining rings 5 ​​at both ends of the shaft body 6. The copper sleeve 9 is sleeved on the outside of the shaft body 6, and the stator 12 is sleeved on the outside of the copper sleeve 9. The magnetic ring 13 is located inside the outer rotor 14. The two ends of the shaft body 6 are connected to the lower cover 11 and the balance block 15 respectively through the bearings 7. The balance block 15 ensures the stability of the rotation of the outer rotor 14. The top of the copper sleeve 9 is connected to the lower cover 11, and the balance block 15 is connected inside the rear cover 19. The bottom end of the outer rotor 14 is movably sleeved inside the balance block 15. One end of the shaft body 6 passes through the lower cover 11 and connects to the fan blade 2. The top end of the outer rotor 14 is connected to the shaft body 6. Therefore, when the outer rotor 14 rotates, it can adjust the rotation of the shaft body 6, which in turn can drive the fan blade 2 to rotate. A wave-shaped shim 8 is provided above the copper sleeve 9.

[0021] The rear cover 19 is fixed to the outer bottom of the lower cover 11 with screws. An air outlet 10 is provided on one side between the upper cover 1 and the lower cover 11, and an air inlet 18 is provided at the top center of the upper cover 1. The PCB circuit board 17 is connected to wires 21. The upper cover 1 is made of plastic, the lower cover 11 is made of aluminum alloy, and the fan blade 2 and the rear cover 19 are made of metal. Different materials are used reasonably according to the structural strength and stability requirements, thereby saving material costs to the greatest extent. In addition, the blades of the fan blade 2 have a smaller installation angle, the blades are smoothly curved, and the thickness is thin and uniform, which effectively reduces the noise of the fan during operation. Furthermore, by polishing the inner wall shell of the upper cover 1 and the lower cover 11, smooth airflow is maintained in the fan cavity channel.

[0022] Specifically, when this utility model is used, the copper sleeve 9 is riveted to the lower cover 11 to combine the fan assembly and the brushless motor assembly. The connection of the shaft body 6 is sealed by the waterproof ring 3 and the waterproof grease 4, so that their internal spaces are independent and prevent water and dust from entering the brushless motor assembly. Under high-power working conditions, the motor and PCB circuit board 17 respectively achieve heat dissipation through the copper sleeve 9 and the thermally conductive adhesive 16 through the air duct of the lower cover 11, thereby making the vacuum fan run stably.

[0023] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0024] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A powerful, heat-dissipating, waterproof vacuum cleaner, characterized in that, include: A fan assembly and a brushless motor assembly for driving the fan assembly, the fan assembly including an upper cover (1), a fan blade (2), a lower cover (11) and a rear cover (19), the fan blade (2) being disposed between the upper cover (1) and the lower cover (11), the upper cover (1) and the lower cover (11) being connected by a snap fastener, the brushless motor assembly including a motor, a waterproof ring (3), a waterproof grease (4), a wave gasket (8), a bearing (7), a thermally conductive adhesive (16) and a PCB circuit board (17), the motor being installed between the lower cover (11) and the rear cover (19), the waterproof ring (3) being disposed at the connection between the lower cover (11) and the motor output end, the waterproof grease (4) being disposed between the bearing (7) and the waterproof ring (3), the thermally conductive adhesive (16) being disposed between the PCB circuit board (17) and the lower cover (11), the PCB circuit board (17) being fixedly connected to the bottom outer side of the lower cover (11) by screws.

2. The high-suction, heat-dissipating, waterproof dust collector as described in claim 1, characterized in that, The motor includes a retaining ring (5), a shaft body (6), a copper sleeve (9), a stator (12), a magnetic ring (13), an outer rotor (14), and a balance block (15). The shaft body (6) is provided with retaining rings (5) at both ends. The shaft body (6) is fitted with bearings (7) on one side of the retaining rings (5) at both ends. The copper sleeve (9) is fitted on the outside of the shaft body (6). The stator (12) is fitted on the outside of the copper sleeve (9). The magnetic ring (13) is located on the inside of the outer rotor (14).

3. The high-suction, heat-dissipating, waterproof dust collector as described in claim 2, characterized in that, A wave-shaped gasket (8) is provided above the copper sleeve (9).

4. The high-suction, heat-dissipating, waterproof dust collector as described in claim 2, characterized in that, The two ends of the shaft body (6) are connected to the lower cover (11) and the balance block (15) respectively through bearings (7). The top of the copper sleeve (9) is connected to the lower cover (11), and the balance block (15) is connected to the inside of the rear cover (19).

5. The high-suction, heat-dissipating, waterproof dust collector as described in claim 2, characterized in that, The bottom end of the outer rotor (14) is movably sleeved inside the balance block (15), and the top end of the outer rotor (14) is connected to the shaft body (6).

6. The high-suction, heat-dissipating, waterproof dust collector as described in claim 1, characterized in that, The rear cover (19) is fixedly installed on the bottom outer side of the lower cover (11) by screws. An air outlet (10) is provided on one side between the upper cover (1) and the lower cover (11), and an air inlet (18) is provided at the top center of the upper cover (1).

7. The high-suction, heat-dissipating, waterproof dust collector as described in claim 1, characterized in that, The PCB circuit board (17) is connected to wires (21), the upper cover (1) is made of plastic, the lower cover (11) is made of aluminum alloy, and the fan blade (2) and the rear cover (19) are made of metal.

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