Dustproof fan

Abstract

The utility model discloses a dustproof fan, it includes mounting seat, wind wheel and motor. Among them, wind wheel rotatably installs in mounting seat, and wind wheel includes seat body and blade, and the blade sets up at the outer periphery of seat body, and the motor installation space is surrounded between seat body and mounting seat, and the motor is located in the motor installation space to drive wind wheel rotation. Among them, the clearance is formed between the end face of mounting seat and seat body, and the end face of mounting seat or seat body is equipped with dustproof structure, and the dustproof structure extends into the clearance to partially shield the flow path formed by the clearance. The dustproof fan of this technical scheme shields the flow path formed by the clearance with the dustproof structure, to reduce or avoid the sundries such as sand, frost, salt crystallization into the inside of wind wheel, prevent sundries from causing the hindrance to wind wheel rotation and lead to the phenomenon of wind wheel jam.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a dustproof fan. Background Technology

[0002] Axial flow fans have a wide range of applications, such as electric fans and air conditioner outdoor unit fans, which operate in an axial flow manner. These fans have many advantages, such as simple installation, good performance, low noise, and low energy consumption. They are also widely used in harsh environments, such as deserts, mines, construction sites, plateaus, polar regions, or coastlines.

[0003] Currently, fan blades on the market are fitted with guide rings. When the fan blades and guide rings move relative to each other, the dust, ice, frost, and salt crystals adhering to the guide rings cause significant frictional resistance to the fan blades, potentially causing them to seize up and stop rotating. Furthermore, dust, frost, and salt crystals can easily penetrate the fan's interior and adhere to the inner wall of the rotor. The relative movement between the rotor and stator can also cause the rotor to seize up due to frictional resistance from these foreign objects. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a dustproof fan that uses the flow path formed by the gap of the dust-blocking structure to reduce or avoid foreign objects such as sand, frost, and salt crystals from entering the inside of the impeller, and to prevent foreign objects from obstructing the rotation of the impeller and causing the impeller to jam.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A dustproof fan, comprising: Mounting base; A wind turbine is rotatably mounted on the mounting base. The wind turbine includes a base body and blades. The blades are disposed on the outer periphery of the base body. A motor mounting space is formed between the base body and the mounting base. An electric motor is located within the motor mounting space to drive the wind turbine to rotate; A gap is formed between the opposite end faces of the mounting base and the base body, and the gap is connected to the motor mounting space. The end face of the mounting base or the base body is provided with a dust-blocking structure that extends into the gap to partially block the flow path formed by the gap.

[0006] In some implementations of this utility model, in conjunction with the above-described implementations, the dust-blocking structure includes a dust-blocking ring, which is disposed on the end face of the mounting base.

[0007] In some implementations of this utility model, in conjunction with the above implementations, the mounting base is provided with a first peripheral wall and a second peripheral wall at radial intervals. Both the first peripheral wall and the second peripheral wall protrude toward the side closer to the impeller. The dust-blocking structure is disposed on the end face of the first peripheral wall, and the second peripheral wall is located outside the first peripheral wall and protrudes downward from the first peripheral wall to shield the gap radially.

[0008] In some implementations of this utility model, in conjunction with the above implementations, the mounting base has a boss in the first peripheral wall, the boss has a connecting hole in the vertical direction, a groove is formed between the first peripheral wall and the boss, a connecting shaft is installed in the connecting hole of the mounting base, and the impeller is connected to the mounting base through the connecting shaft.

[0009] In some implementations of this utility model, in conjunction with the above-described implementations, the base is provided with a cavity, the cavity is connected to the groove to form the motor mounting space, the motor includes a stator and a rotor, the stator is sleeved outside the connecting shaft, and the rotor is installed in the cavity and sleeved outside the stator.

[0010] In some implementations of this utility model, in conjunction with the above-described implementations, the connecting shaft is provided with a through hole extending in the vertical direction, the seat body is provided with a sleeve in the cavity, the sleeve is embedded in the end of the connecting shaft away from the mounting seat, the sleeve is equipped with a rotating shaft extending into the connecting shaft in the vertical direction, and the two ends of the connecting shaft are rotatably connected to the rotating shaft through bearings.

[0011] In some implementations of this utility model, in conjunction with the above-described implementation methods, the outer surface of the dust-blocking structure is an inclined surface.

[0012] In some implementations of this utility model, in conjunction with the above-described methods, the dust-blocking structure is made of rubber material.

[0013] In some implementations of this utility model, in combination with the above implementation methods, the distance between the dust-blocking structure and the seat is no greater than 0.2mm.

[0014] In some implementations of this utility model, in conjunction with the above implementations, the end face of the seat is provided with a plurality of first balance grooves spaced apart along the circumference, the seat is provided with a plurality of second balance grooves spaced apart along the circumference on the outer side near the end face, and the dust-proof ring is located above the first balance grooves.

[0015] One of the above technical solutions has at least one of the following advantages or beneficial effects: The dustproof fan of this technical solution eliminates the wind guide ring structure on the outer periphery of the blades and sets a dust-blocking structure on the end face of the mounting base or base body. On the one hand, since there is no wind guide ring or other structure that moves relative to the wind wheel, the wind wheel will not be affected by sand, frost, salt crystals and other debris attached to the wind guide ring during the movement, thereby avoiding large frictional resistance caused by debris blocking the wind wheel during rotation and ensuring the normal rotation of the wind wheel.

[0016] On the other hand, the dust-blocking structure set on the end face of the mounting base or the base body can further prevent sand, snowflakes, cold air, salt spray and other debris from entering the motor mounting space through the gap. It can also clean these debris by utilizing the relative motion between the two during the rotation of the wind turbine, thereby reducing or preventing these impurities from entering the motor mounting space and adhering to the surface of the rotor or stator. This ensures that the rotor and stator will not be jammed due to excessive frictional resistance caused by impurities such as sand, ice, frost or salt crystals when they move relative to each other, thus ensuring the normal operation of the wind turbine under severe weather and extreme environmental conditions. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention; Figure 2 yes Figure 1 Schematic diagram of the cross section at point AA; Figure 3 yes Figure 2 Enlarged view of point B in the middle; Figure 4 yes Figure 1 The diagram shows a structural schematic of a wind turbine in one embodiment. Figure 5 yes Figure 1 The diagram shows a structural schematic of a mounting base in one embodiment.

[0018] The symbols in the attached image are explained as follows: Mounting base 1; First peripheral wall 11; Second peripheral wall 12; Boss 13; Groove 14; Connecting shaft 15; Through hole 151; Impeller 2; Base 21; Cavity 211; Sleeve 212; Rotating shaft 213; Bearing 214; First balance groove 215; Second balance groove 216; Blade 22; Motor 3; Stator 31; Rotor 32; Motor mounting space 4; Gap 5; Dustproof structure 6. Detailed Implementation

[0019] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0020] In this utility model, when directions (up, down, left, right, front, and back) are described, it is only for the purpose of describing the technical solution of this utility model, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0021] In this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number; "above," "below," "within," etc. are understood to include the stated number. In the description of this utility model, if "first" or "second" is used, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0022] In this utility model, unless otherwise explicitly defined, terms such as "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model based on the specific content of the technical solution.

[0023] See Figure 1 and Figure 2 This utility model provides a dustproof fan, including a mounting base 1, a fan wheel 2, and a motor 3. The fan wheel 2 is rotatably mounted on the mounting base 1. The fan wheel 2 includes a base body 21 and blades 22, with multiple blades 22 disposed on the outer periphery of the base body 21. A motor mounting space 4 is formed between the base body 21 and the mounting base 1. The motor 3 is located within the motor mounting space 4 to drive the fan wheel 2 to rotate.

[0024] A gap 5 is formed between the opposing end faces of the mounting base 1 and the base body 21, and the gap 5 is connected to the motor mounting space 4. By setting the gap 5 to be connected to the motor mounting space 4, external air can be guided to flow between the stator 31 and the rotor 32 in the motor 3 as a cooling medium, thereby removing the heat generated during the operation of the motor 3.

[0025] See Figure 2 and Figure 3 The end face of the mounting base 1 or the base body 21 is provided with a dust-blocking structure 6. The dust-blocking structure 6 extends into the gap 5 to partially block the flow path formed by the gap 5, thereby preventing large-diameter sand and dust from entering the interior of the wind turbine 2.

[0026] In harsh and extreme environments, the surface and interior of the wind turbine 2 are prone to accumulating large amounts of sand and salt crystals, as well as icing and frost formation. When using the dustproof fan, the motor 3 drives the wind turbine 2 to rotate, and the rotating blades 22 generate airflow around the turbine, creating a blower effect.

[0027] When the blade 22 is rotating, the airflow generated by the blade 22 can push the particles to the edge through the vortex effect, which plays the role of the first layer of dust prevention. This can reduce or prevent sand, snow, cold air, salt spray and other debris from adhering to the surface of the wind turbine 2 or entering the motor installation space 4 through the gap 5.

[0028] In addition, the dustproof structure 6 can prevent sand, snowflakes, cold air, salt spray and other debris from entering the motor installation space 4 through the gap 5, thereby preventing these impurities from adhering to the surface of the rotor 32 or stator 31, and thus ensuring that the rotor 32 and stator 31 will not be jammed due to excessive frictional resistance caused by impurities such as sand, ice, frost or salt crystals when they move relative to each other.

[0029] The dustproof fan of this technical solution eliminates the wind guide ring structure around the blades 22, and sets a dust-blocking structure 6 on the end face of the mounting base 1 or the base body 21. On the one hand, since there is no wind guide ring or other structure that moves relative to the wind wheel 2, the wind wheel 2 will not be affected by sand, frost, salt crystals and other debris attached to the wind guide ring during the movement, thereby avoiding large frictional resistance caused by debris blocking the wind wheel 2 during rotation, and ensuring the normal rotation of the wind wheel 2.

[0030] On the other hand, when the blades 22 rotate, the airflow generated by the blades 22 can push the particles to the edge through the vortex effect, which plays the role of the first layer of dust prevention. This can reduce or prevent sand, snow, cold air, salt spray and other debris from adhering to the surface of the wind turbine 2 or entering the motor installation space 4 through the gap 5.

[0031] Furthermore, the dust-blocking structure 6 provided on the end face of the mounting base 1 or the base body 21 can further prevent sand, snowflakes, cold air, salt spray and other debris from entering the motor mounting space 4 through the gap 5. During the rotation of the impeller 2, the relative motion between the two can be used to clean these debris, thereby reducing or preventing these impurities from entering the motor mounting space 4 and adhering to the surface of the rotor 32 or stator 31. This ensures that when the rotor 32 and stator 31 move relative to each other, they will not be jammed due to excessive frictional resistance caused by sand, ice, frost or salt crystals, thus ensuring the normal operation of the impeller 2 in harsh weather and extreme environmental conditions.

[0032] It is understood that the dust-blocking structure 6 can be a ring-shaped structure, or it can be one or more spaced dust-collecting scrapers, etc., and there are no restrictions here. See also Figure 5 In some embodiments, the dust-blocking structure 6 includes a dust-blocking ring disposed on the end face of the mounting base 1. During the rotation of the impeller 2, the base 21 and the dust-blocking ring will move relative to each other, allowing the dust-blocking ring to clean debris blown towards the end face of the base 21. Furthermore, the annular dust-blocking ring can provide closed-loop protection for the gap 5, resulting in better dust prevention during operation or when the fan is not in use.

[0033] It is also understood that the dust-blocking structure 6 can be made of rigid or soft materials. In some embodiments, the dust-blocking structure 6 is made of rubber material, which is flexible and corrosion-resistant. During the cleaning of impurities, it can reduce the impact of abrasion on the impeller 2, resulting in better dust removal. Furthermore, its corrosion-resistant properties can adapt to the requirements of harsh environments and extreme weather, ensuring the service life of the dust-blocking structure 6.

[0034] The dust-blocking structure 6 can be detachably installed on the end face of the mounting base 1 by means of snap-fit, threaded connection, or fixed installation on the mounting base 1. In some embodiments, the dust-blocking structure 6 is integrally formed with the mounting base 1, effectively ensuring the stability of the connection between the dust-blocking structure 6 and the mounting base 1.

[0035] See Figure 2 , Figure 3 and Figure 5 In some embodiments, the outer surface of the dust-blocking structure 6 is inclined, which helps to reduce the direct impact of sand, cold air, salt frost, and other debris on the dust-blocking structure 6. At the same time, when the fan is not working, the debris can flow downwards along the inclined surface, making it convenient for the dust-blocking structure 6 to uniformly clean sand and other debris when the fan is running.

[0036] Further, see Figure 3The distance between the dust-proof structure 6 and the base 21 is no more than 0.2mm. In other words, the gap width of the gap 5 is no more than 0.2mm. This ensures that air enters the electrode installation space through the flow path formed by the gap 5 to cool and dissipate heat from the electrode, while effectively preventing large-diameter dust and other particles from entering the gap 5, thereby ensuring the normal and efficient operation of the motor 3 inside the impeller 2.

[0037] See Figure 2 , Figure 3 and Figure 5 In some embodiments, the mounting base 1 is provided with a first peripheral wall 11 and a second peripheral wall 12 at radial intervals, both of which protrude towards the side closer to the impeller 2. A dust-blocking structure 6 is disposed on the end face of the first peripheral wall 11, and the second peripheral wall 12 is located outside the first peripheral wall 11 and protrudes downwards from it. In other words, the second peripheral wall 12 is not higher than the top end face of the base 21, so as to radially shield the gap 5. The second peripheral wall 12 can block external sand and dust and other debris, reducing the adhesion of debris to the top of the base 21 and reducing the entry of debris into the flow path, thus providing a better dustproof effect.

[0038] Further, see Figure 2 and Figure 5 The mounting base 1 has a boss 13 in the first peripheral wall 11. The boss 13 has a connecting hole in the vertical direction. A groove 14 is formed between the first peripheral wall 11 and the boss 13. A connecting shaft 15 is installed in the connecting hole of the mounting base 1. The impeller 2 is connected to the mounting base 1 through the connecting shaft 15, which realizes the connection between the impeller 2 and the mounting base 1.

[0039] Furthermore, see Figure 2 , Figure 4 and Figure 5 The base 21 has a cavity 211, which communicates with the groove 14 to form a motor mounting space 4. The motor 3 includes a stator 31 and a rotor 32. The stator 31 is sleeved on the outside of the connecting shaft 15, and the groove 14 is provided with a fixing structure for mounting the stator 31. The rotor 32 is installed inside the cavity 211 and sleeved on the outside of the stator 31. Since the rotor 32 is installed in the base 21, when the rotor 32 rotates, it drives the base 21 to rotate, which in turn drives the impeller 2 to rotate. The motor mounting space 4 provided by this structure can reduce the space occupied by the motor 3 and facilitate the miniaturization design of the overall fan.

[0040] Further, see Figure 2 and Figure 4The connecting shaft 15 is provided with a through hole 151 extending in the vertical direction. The seat 21 is provided with a sleeve 212 in the cavity 211. The sleeve 212 is embedded at the end of the connecting shaft 15 away from the mounting seat 1. The sleeve 212 is equipped with a rotating shaft 213 extending into the connecting shaft 15 in the vertical direction. The two ends of the connecting shaft 15 are rotatably connected to the rotating shaft 213 through bearings 214, so that the wind turbine 2 and the mounting seat 1 can be stably connected.

[0041] Further, see Figure 1 , Figure 3 and Figure 4 The end face of the base 21 is provided with a plurality of first balance grooves 215 spaced apart along the circumference, and the outer side of the base 21 near the end face is provided with a plurality of second balance grooves 216 spaced apart along the circumference. By providing the first balance grooves 215 and the second balance grooves 216, the phenomenon of offset and vibration during the rotation of the impeller 2 can be prevented. At the same time, the contact surface between the impeller 2 and the external air can be expanded, which is conducive to heat dissipation.

[0042] The dust baffle ring is located above the first balance groove 215. When the impeller 2 rotates, the first balance groove 215 and the gap 5 cooperate to achieve stable airflow into the motor installation space 4, ensuring heat dissipation of the motor 3 while effectively preventing dust.

[0043] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A dustproof fan, characterized in that, include: Mounting base; A wind turbine is rotatably mounted on the mounting base. The wind turbine includes a base body and blades. The blades are disposed on the outer periphery of the base body. A motor mounting space is formed between the base body and the mounting base. An electric motor is located within the motor mounting space to drive the wind turbine to rotate; A gap is formed between the opposite end faces of the mounting base and the base body, and the gap is connected to the motor mounting space. The end face of the mounting base or the base body is provided with a dust-blocking structure that extends into the gap to partially block the flow path formed by the gap.

2. The dustproof fan according to claim 1, characterized in that, The dust-blocking structure includes a dust-blocking ring, which is disposed on the end face of the mounting base.

3. The dustproof fan according to claim 2, characterized in that, The mounting base is provided with a first peripheral wall and a second peripheral wall at radial intervals. Both the first peripheral wall and the second peripheral wall protrude towards the side closer to the impeller. The dust-blocking structure is disposed on the end face of the first peripheral wall. The second peripheral wall is located outside the first peripheral wall and protrudes downward from the first peripheral wall to shield the gap radially.

4. The dustproof fan according to claim 3, characterized in that, The mounting base has a boss inside the first peripheral wall, and the boss has a connecting hole in the vertical direction. A groove is formed between the first peripheral wall and the boss. A connecting shaft is installed in the connecting hole of the mounting base, and the impeller is connected to the mounting base through the connecting shaft.

5. The dustproof fan according to claim 4, characterized in that, The base has a cavity that communicates with the groove to form the motor mounting space. The motor includes a stator and a rotor. The stator is sleeved on the outside of the connecting shaft, and the rotor is installed in the cavity and sleeved on the outside of the stator.

6. The dustproof fan according to claim 5, characterized in that, The connecting shaft has a through hole extending in the vertical direction. The seat body has a sleeve inside the cavity. The sleeve is embedded at the end of the connecting shaft away from the mounting seat. The sleeve is fitted with a rotating shaft extending into the connecting shaft in the vertical direction. The two ends of the connecting shaft are rotatably connected to the rotating shaft through bearings.

7. The dustproof fan according to claim 1, characterized in that, The outer surface of the dust-blocking structure is an inclined surface.

8. The dustproof fan according to claim 1, characterized in that, The dust-blocking structure is made of rubber material.

9. The dustproof fan according to claim 1, characterized in that, The distance between the dust-proof structure and the base is no greater than 0.2 mm.

10. The dustproof fan according to claim 2, characterized in that, The end face of the seat is provided with a plurality of first balance grooves spaced apart along the circumference, and the outer side of the seat near the end face is provided with a plurality of second balance grooves spaced apart along the circumference, and the dust-proof ring is located above the first balance grooves.

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