Low-noise fan with built-in motor

Abstract

The invention relates to the technical field of fans, and particularly discloses a low-noise motor built-in fan which comprises an air duct, a motor is fixedly connected to the interior of the air duct, a rotating tower (22) is fixedly connected to the output end of the motor, and blades are fixedly connected to the annular outer surface of the rotating tower (22). A dust removal assembly for removing dust on the blades is arranged at the upper end of the inner surface of the air duct, the dust removal assembly mainly comprises a dust removal plate, the dust removal plate can be folded and stored on the inner surface of the air duct, sweeping and dust removal are conducted on the edges of the blades when the blades rotate, the wind resistance of the equipment during operation is reduced, and energy consumption is optimized; by arranging the turnover plate which can be turned over to be matched with the dust removal plate, when dust removal needs to be conducted on the blades, the driving motor drives the driving gear to rotate to force bristles on the surfaces of the dust removal plate to make contact with the blades, dust removal is conducted on the surfaces and the edges of the blades, the cleaning difficulty of the blades is lowered, and the aim that the blades are cleaned every day is achieved; and the problem of noise increase caused by dust accumulation on the blades is solved.

Description

Technical Field

[0001] This invention relates to the field of fan technology, specifically to a low-noise fan with a built-in motor. Background Technology

[0002] Low-noise motor-integrated fans typically refer to fans that integrate the motor inside the fan casing, significantly reducing operating noise through optimized motor design, airflow control, and structural vibration reduction. These types of fans are widely used in environments where noise is a concern. However, it is important to note that in order to prevent high-energy eddies from forming at the tips of the blades, the blades need to be cleaned regularly to avoid uneven dust accumulation that could damage the smoothness of the blade surface and the shape of the blade edges. Existing fans can periodically remove the blades for dust removal, but this is inefficient and requires a certain amount of dust to accumulate before dust removal can be performed, which is not conducive to noise reduction. We propose a low-noise motor-integrated fan. Summary of the Invention

[0003] The purpose of this invention is to provide a low-noise motor-integrated fan to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a low-noise motor-embedded fan, comprising a fan duct, a motor fixedly connected inside the fan duct, a rotating tower fixedly connected to the output end of the motor, blades fixedly connected to the annular outer surface of the rotating tower, and a dust removal component for removing dust from the blades provided at the upper end of the inner surface of the fan duct. The dust removal component mainly includes a dust removal plate, which can be folded and stored on the inner surface of the air duct. When the blades rotate, the dust removal plate cleans the edges of the blades, reducing wind resistance and optimizing energy consumption during operation. The blades are located on the annular outer surface of the rotating tower. The blades are rotatable and work with the dust removal components to remove dust from the front, back, and edges of the blades, thereby maximizing energy efficiency.

[0005] The dust removal assembly includes a drive motor, which is fixedly connected to the annular outer surface of the air duct. The air duct has a notch at the position corresponding to the drive motor. The air duct is rotatably connected to a drive gear on both sides of the notch via a rotating shaft. A flap is fixedly connected to the annular outer surface of the drive gear. One side of the flap is provided with a dust removal plate. A screw is fixedly connected to the output end of the drive motor, and the screw meshes with the drive gear.

[0006] The length of the dust removal plate is greater than the length of the blade. The end of the flap away from the drive gear is rotatably connected to the dust removal plate. The dust removal plate is made of magnetic metal. A magnetic plate is fixedly connected to the back of the flap (34).

[0007] The dust removal plate has silicone bristles on the side away from the magnetic plate, and the dust removal plate is rotatably connected to the flip plate at two-thirds of the way down from the top of the dust removal plate. The lower end of the dust removal plate is in contact with the edge of the rotating tower.

[0008] The rotating tower has a rotating cover connected to the end away from the noise reduction motor. The rotating tower has a cavity inside. One end of the blade is columnar and extends into the cavity. A rotating gear is fixedly connected to the end of the blade near the rotating tower. A rotating plate is rotatably connected to the inner surface of the cavity through a bearing. The rotating plate has a toothed groove at the corresponding position of the rotating gear, and the toothed groove meshes with the rotating gear.

[0009] The rotating tower has a scale on its annular outer surface, and a slot is provided inside the cavity at a position aligned with the scale. The rotating plate has a retractable rod inside, and the rod matches the slot.

[0010] The outer surface of the rotating plate is provided with a groove, and a slider that is fixedly connected to the insertion rod is slidably connected inside the groove. A return spring is fixedly connected between the slider and the groove, and the interface between the groove and the slider has a T-shaped structure design.

[0011] The rotating plate has a pull-out groove through its center, and a pull-out rod is slidably connected inside the pull-out groove. One side of the pull-out rod is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to the protruding part of the slider. The end of the pull-out rod near the rotating cover has a round hole structure design.

[0012] The slide, slider, and connecting rod are in two sets and are symmetrically distributed. The pull rod and connecting rod are designed in a "♀" shape. The insert rod passes through the rotating plate, and the weight of the insert rod and slider is greater than the weight of the pull rod.

[0013] This invention has at least the following beneficial effects: By setting up a flip-up flap that works in conjunction with a dust removal plate, when dust removal is needed on the blades, the drive motor drives the active gear to rotate, forcing the bristles on the surface of the dust removal plate to contact the blades, removing dust from the surface and edges of the blades, reducing the difficulty of cleaning the blades, meeting the goal of cleaning the blades once a day, and solving the problem of increased noise caused by dust accumulation on the blades. By rotating the flap and the dust removal plate, one end of the dust removal plate can be flipped at a certain angle after contacting the rotating tower, so that the dust removal plate at the blade tip is closer to the blade surface. At this time, the bristles will fully contact the smaller end of the blade, improving the dust removal efficiency of the blade edge. By making the blades rotatable, it can meet the needs of different noise levels and air volumes. The blades can also be rotated 180° so that the back side is aligned with the bristles of the dust removal plate. With the low-speed rotation of the noise-reducing motor, the blades can be effectively dusted. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the drive motor and notch of the present invention; Figure 4 This is a schematic diagram of the dust removal plate and the flap of the present invention; Figure 5 This is a schematic diagram of the included angle structure of the dust removal plate and the flap of the present invention; Figure 6 This is a cross-sectional structural diagram of the rotating tower of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a schematic diagram of the exploded structure of the rotating tower of the present invention; Figure 9 This is a schematic diagram of the expansion groove and top plate of the present invention.

[0015] In the diagram: 1. Air duct; 2. Noise-reducing motor; 21. Blade; 22. Rotating tower; 23. Rotating cover; 24. Rotating gear; 25. Rotating plate; 26. Gear groove; 27. Slide groove; 28. Pull-out groove; 29. ​​Pull-out rod; 3. Dust removal assembly; 30. Dust removal plate; 31. Drive motor; 32. Screw; 33. Drive gear; 34. Flip plate; 35. Top plate; 36. Magnetic plate; 37. Telescopic groove; 38. Knob; 381. Spiral groove; 382. Spiral rod; 39. Notch; 40. Connecting rod; 41. Slider; 42. Insert rod; 43. Slot; 44. Return spring; 45. Cavity. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-9The present invention provides a technical solution: a low-noise motor-integrated fan, including a fan duct 1, a motor fixedly connected inside the fan duct 1, a rotating tower 22 fixedly connected to the output end of the motor, blades 21 fixedly connected to the annular outer surface of the rotating tower 22, and a dust removal component 3 for removing dust from the blades 21 provided at the upper end of the inner surface of the fan duct 1. The dust removal component 3 can clean the dust adhering to the edge of the fan blades, greatly reducing the rotational resistance of the blades 21. The dust removal component 3 mainly includes a dust removal plate 30, which can be folded and stored on the inner surface of the air duct 1. When the blades 21 rotate, the edge of the blades 21 is cleaned and dust is removed, reducing the wind resistance and optimizing energy consumption during operation. The folding and storage method allows it to be unfolded when dust removal is needed and stored when dust removal is not needed, reducing wind resistance and making the structure reasonable and reliable. The blade 21 is located on the annular outer surface of the rotating tower 22. The blade 21 is rotatable and can be matched with the scale on the outer surface of the rotating tower 22. When a large air volume is required, the angle is increased, which increases power consumption and noise accordingly. When noise reduction is required, the angle of the blade 21 is decreased to ensure a low noise effect. When dust removal is required, the blade 21 is rotated 180° in conjunction with the dust removal component 3 so that the front and back of the blade 21 are interchanged. Both sides of the blade 21 can contact the bristles. Through the above design, dust can be removed from the front and back of the blade 21 as well as the edges, optimizing energy consumption to the greatest extent.

[0018] The dust removal assembly 3 includes a drive motor 31, which is fixedly connected to the annular outer surface of the air duct 1. The air duct 1 has a notch 39 at the position corresponding to the drive motor 31. The air duct 1 is rotatably connected to the drive gear 33 on both sides of the notch 39 via a rotating shaft. A flap 34 is fixedly connected to the annular outer surface of the drive gear 33. One side of the flap 34 is provided with a dust removal plate 30. The output end of the drive motor 31 is fixedly connected to a screw 32, which meshes with the drive gear 33. The drive motor 31 drives the screw 32 to change the angle between the drive gear 33 and the flap 34. When the flap 34 is at 90° with the notch 39, the blades 21 can be cleaned. The screw 32 and the drive gear 33 work together to increase the stability of the structure and allow the flap 34 to rotate. This allows the bristles to contact the blades 21 and also allows the bristles to be stored inside the notch 39 to reduce the resistance of the air duct 1.

[0019] The length of the dust removal plate 30 is greater than the length of the blade 21. The end of the flap 34 away from the drive gear 33 is rotatably connected to the dust removal plate 30. The dust removal plate 30 is made of magnetic metal. A magnetic plate 36 is fixedly connected to the back of the flap (34). The side of the dust removal plate 30 away from the magnetic plate 36 is provided with silicone bristles. The position where the dust removal plate 30 and the flap 34 are rotatably connected is located at two-thirds of the way down from the top of the dust removal plate 30. The lower end of the dust removal plate 30 contacts the edge of the rotating tower 22. When the flap 34 and the... When the included angle of the notch 39 is greater than 90°, the edge of the dust removal plate 30 will contact the annular edge of the rotating tower 22. Since the dust removal plate 30 and the flip plate 34 are rotatably connected, an included angle will be generated between the dust removal plate 30 and the flip plate 34. At this time, the upper part of the dust removal plate 30 carrying bristles is closer to the edge of the blade 21 to remove dust from the blade 21. At the same time, the bristles will make interference contact with the edge of the blade 21 away from the rotating tower 22, thereby removing dust from the end of the blade 21. Through the above structure, the blade 21 can be cleaned more comprehensively.

[0020] The rotating tower 22 is connected to a rotating cover 23 at the end away from the noise-reducing motor 2. A cavity 45 is opened inside the rotating tower 22. One end of the blade 21 is columnar and extends into the cavity 45. A rotating gear 24 is fixedly connected to the end of the blade 21 near the rotating tower 22. A rotating plate 25 is rotatably connected to the inner surface of the cavity 45 through a bearing. The rotating plate 25 has a toothed groove 26 at the corresponding position of the rotating gear 24. The toothed groove 26 meshes with the rotating gear 24. By rotating the rotating plate 25, the angle of the fan blade can be changed to meet different requirements for noise and air volume. When cleaning the fan blade, dust can be cleaned on both sides of the fan blade, improving the dust removal efficiency.

[0021] The rotating tower 22 has a scale on its annular outer surface. The cavity 45 has a slot 43 aligned with the scale. The rotating plate 25 has a retractable rod 42 inside. The rod 42 matches the slot 43. The rod 42 is inserted into the slot 43 to restrict the rotation of the rotating plate 25. The fan blades can be locked and the angle fixed by the toothed groove 26 and the rotating gear 24. The fan blade angle can be determined by adjusting the scale.

[0022] The outer surface of the rotating plate 25 is provided with a groove 27. A slider 41, which is fixedly connected to the insertion rod 42, is slidably connected inside the groove 27. A return spring 44 is fixedly connected between the slider 41 and the groove 27. The return spring 44 pushes the slider 41 to slide and pushes the insertion rod 42 into the slot 43. The interface between the groove 27 and the slider 41 is designed in a T-shape. The T-shape design can increase the stability of the structure. When the rotating tower 22 rotates, the centrifugal force ensures that the insertion rod 42 will not fall out of the slot 43, further increasing the stability of the structure.

[0023] A pull-out groove 28 is provided through the center of the rotating plate 25. A pull-out rod 29 is slidably connected inside the pull-out groove 28. A connecting rod 40 is rotatably connected to one side of the pull-out rod 29. The other end of the connecting rod 40 is rotatably connected to the protruding part of the slider 41. The end of the pull-out rod 29 near the rotating cover 23 has a round hole structure. With the above structure, if the user wants to adjust the angle of the blade 21, he pulls the pull-out rod 29, which drives the two sets of sliders 41 to slide through the connecting rod 40, forcing the insertion rod 42 to disengage. The slot 43 and the pull rod 29 are provided with a round hole, through which a finger can be rotated to drive the rotating plate 25 to rotate. After observing that the scale angle is appropriate, the finger can be released directly, and the reset spring 44 will drive the insertion rod 42 to reset. The number of the sliding groove 27, the slider 41 and the connecting rod 40 are two sets, and they are symmetrically distributed. The pull rod 29 and the connecting rod 40 are designed in a "♀" structure. The insertion rod 42 passes through the rotating plate 25, and the weight of the insertion rod 42 and the slider 41 is greater than the weight of the pull rod 29, which increases the stability of the structure.

[0024] To limit the angle between the dust removal plate 30 and the flip plate 34, a retractable top plate 35 is provided at the end of the flip plate 34 away from the drive gear 33. The flip plate 34 has a telescopic groove 37 inside, and the top plate 35 slides inside the telescopic groove 37. The top plate 35 has a spiral groove 381 inside, and a spiral rod 382 is threadedly connected inside the spiral groove 381. A knob 38 is fixedly connected to the end of the spiral rod 382 away from the spiral groove 381. Half of the knob 38 is located outside the flip plate 34. The user can change the length of the top plate 35 by rotating the knob 38. When the dust removal plate 30 starts to flip, it is restricted by the top plate 35. The above structure can limit the included angle between the flip plate 34 and the dust removal plate 30, increasing the stability of the overall structure.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-noise motor-embedded fan, comprising a fan duct (1), characterized in that: A motor is fixedly connected inside the air duct (1), and a rotating tower (22) is fixedly connected to the output end of the motor. Blades (21) are fixedly connected to the annular outer surface of the rotating tower (22). A dust removal assembly (3) for removing dust from the blades (21) is provided at the upper end of the inner surface of the air duct (1). The dust removal component (3) mainly includes a dust removal plate (30), which can be folded and stored on the inner surface of the air duct (1) to clean and remove dust from the edge of the blade (21) when the blade (21) rotates, thereby reducing the wind resistance and optimizing energy consumption during operation. The blade (21) is located on the annular outer surface of the rotating tower (22). The blade (21) is rotatable and works with the dust removal assembly (3) to remove dust from the front, back and edges of the blade (21) to optimize energy consumption to the greatest extent.

2. The low-noise motor-embedded fan according to claim 1, characterized in that: The dust removal assembly (3) includes a drive motor (31), which is fixedly connected to the annular outer surface of the air duct (1). The air duct (1) has a notch (39) at the position corresponding to the drive motor (31). The air duct (1) is rotatably connected to the two sides of the notch (39) by a rotating shaft, and a flap (34) is fixedly connected to the annular outer surface of the drive gear (33). A dust removal plate (30) is provided on one side of the flap (34). A screw (32) is fixedly connected to the output end of the drive motor (31), and the screw (32) meshes with the drive gear (33).

3. The low-noise motor-embedded fan according to claim 2, characterized in that: The length of the dust removal plate (30) is greater than the length of the blade (21). The end of the flap (34) away from the drive gear (33) is rotatably connected to the dust removal plate (30). The dust removal plate (30) is made of magnetic metal. A magnetic plate (36) is fixedly connected to the back of the flap (34).

4. The low-noise motor-embedded fan according to claim 3, characterized in that: The dust removal plate (30) has silicone bristles on the side away from the magnetic plate (36), and the dust removal plate (30) and the flip plate (34) are rotatably connected at the position of two-thirds of the way down from the top of the dust removal plate (30). The lower end of the dust removal plate (30) is in contact with the edge of the rotating tower (22).

5. The low-noise motor-embedded fan according to claim 2, characterized in that: The rotating tower (22) is connected to a rotating cover (23) at the end away from the noise reduction motor (2). A cavity (45) is opened inside the rotating tower (22). One end of the blade (21) is columnar and extends into the cavity (45). A rotating gear (24) is fixedly connected to the end of the blade (21) near the rotating tower (22). A rotating plate (25) is rotatably connected to the inner surface of the cavity (45) through a bearing. A tooth groove (26) is opened at the corresponding position of the rotating plate (25) and the rotating gear (24). The tooth groove (26) meshes with the rotating gear (24).

6. The low-noise motor-embedded fan according to claim 5, characterized in that: The rotating tower (22) has a scale on its annular outer surface. The cavity (45) has a slot (43) aligned with the scale. The rotating plate (25) has a retractable rod (42) inside, which matches the slot (43).

7. The low-noise motor-embedded fan according to claim 6, characterized in that: The outer surface of the rotating plate (25) is provided with a groove (27), and a slider (41) that is fixedly connected to the insert rod (42) is slidably connected inside the groove (27). A return spring (44) is fixedly connected between the slider (41) and the groove (27). The interface between the groove (27) and the slider (41) is designed with a T-shaped structure.

8. The low-noise motor-embedded fan according to claim 7, characterized in that: The center of the rotating plate (25) is provided with a pull-out groove (28), and a pull-out rod (29) is slidably connected inside the pull-out groove (28). A connecting rod (40) is rotatably connected to one side of the pull-out rod (29), and the other end of the connecting rod (40) is rotatably connected to the protruding part of the slider (41). The end of the pull-out rod (29) near the rotating cover (23) is designed with a round hole structure.

9. The low-noise motor-embedded fan according to claim 8, characterized in that: The number of the slide groove (27), slider (41) and connecting rod (40) is two sets and symmetrically distributed. The pull rod (29) and connecting rod (40) are designed in a "♀" structure. The insert rod (42) passes through the rotating plate (25), and the weight of the insert rod (42) and slider (41) is greater than the weight of the pull rod (29).

Images