A fan

Abstract

The utility model belongs to fan technical field, specifically disclose a fan, including casing and wind wheel, the casing includes base and frame body, frame body is located at the outer periphery of base, frame body is equipped with at least one opening in the side, and frame body forms dust scraping structure at the opening, wind wheel is installed in the mounting space, and the outer periphery of wind wheel is equipped with outer ring, and the avoiding gap is formed between outer ring and frame body, and the distance of dust scraping structure and outer ring in radial direction is less than avoiding gap. The technical scheme is through utilizing the sand and dust, frost, salt crystallization and other foreign matters of wind wheel outer ring place of casing self structure, prevents the foreign matter on wind wheel from causing the hindrance of wind wheel rotation and leads to the phenomenon that wind wheel is stuck, simple structure is used to improve the service life of fan, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a wind turbine. 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] In existing technologies, wind turbine rotors lack the function of actively removing sand, frost, and salt crystals, leading to the easy accumulation of large amounts of sand, frost, and salt crystals on the outer ring structure around the rotor. When the accumulation of sand, frost, and salt crystals reaches a certain level, it can easily cause the rotor to seize up and stop rotating, rendering the wind turbine unusable. 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 fan that uses the structure of the casing itself to remove foreign objects such as sand, frost, and salt crystals from the outer ring of the impeller, so as to prevent foreign objects on the impeller from obstructing the rotation of the impeller and causing the impeller to jam. The structure is simple and helps to improve the service life of the fan, and it is highly practical.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A fan, comprising: The housing includes a base and a frame. The frame is disposed on the outer periphery of the base and extends upward. An installation space is formed on the inner side of the frame. The frame has at least one opening on its side and a dust scraping structure is formed at the opening. A wind turbine is installed in the installation space. The wind turbine has an outer ring around its periphery. A clearance is formed between the outer ring and the frame. The distance between the dust scraping structure and the outer ring in the radial direction is smaller than the clearance.

[0006] In some implementations of this utility model, in conjunction with the above implementation methods, the frame includes a first frame, a second frame, a third frame, and a fourth frame arranged circumferentially, and the openings are provided between the first frame and the second frame, between the second frame and the third frame, between the third frame and the fourth frame, and between the fourth frame and the first frame. In some implementations of this utility model, in conjunction with the above-described implementations, the cross-section of the base is rectangular, and the first frame, the second frame, the third frame, and the fourth frame are respectively disposed at the four corners of the base.

[0007] In some implementations of this utility model, in conjunction with the above-described implementation methods, the first frame, the second frame, the third frame, and the fourth frame all include an arc-shaped wall and a reinforcing rib. The reinforcing rib is located on the outside of the arc-shaped wall and is connected to the base in the vertical direction.

[0008] In some implementations of this utility model, in conjunction with the above-described implementations, a connecting plate is provided at the top of the arc-shaped wall, and the top of the reinforcing rib is connected to the connecting plate.

[0009] In conjunction with the above implementation methods, some implementation methods of this utility model also include a connector. Each of the connecting plates is provided with a first mounting hole, and each corner of the base is provided with a second mounting hole. The first mounting hole and the second mounting hole are corresponding to each other in the vertical direction. The housing is connected to the external mounting position after passing through the first mounting hole and the second mounting hole respectively through the connector.

[0010] In some implementations of this utility model, in conjunction with the above-described implementations, the inner wall surfaces of the first frame, the second frame, the third frame, and the fourth frame all include an arc-shaped surface, a raised surface, and a transition surface. Both sides of the arc-shaped surface are connected to the raised surface. The side of the raised surface away from the arc-shaped surface is connected to the transition surface. The side of the transition surface away from the arc-shaped surface extends vertically to the outer side of the base. The raised surface forms the dust scraping structure, and the clearance gap is formed between the outer ring and the arc-shaped surface.

[0011] In some implementations of this utility model, in combination with the above implementations, the size of the clearance gap formed between the arcuate surfaces of the first frame, the second frame, the third frame and the fourth frame and the outer ring is the same.

[0012] In some implementations of this utility model, in conjunction with the above-described implementations, the wind turbine includes a hub, blades, and an outer ring. The blades are circumferentially spaced around the outer periphery of the hub and connected to the inner side of the outer ring.

[0013] In some implementations of this utility model, in conjunction with the above-described implementations, the bottom of the wheel hub is provided with a connecting hole, the base is provided with a motor in the mounting space, and the output shaft of the motor extends into the connecting hole to connect with the wheel hub.

[0014] One of the above technical solutions has at least one of the following advantages or beneficial effects: By setting an opening in the frame, a dust-scraping structure can be formed at the opening. When foreign matter such as sand, frost, and salt crystals on the outer ring reaches a certain thickness, the impeller will carry these foreign matter into contact with the dust-scraping structure during rotation, thereby using the dust-scraping structure to remove the foreign matter. After the foreign matter on the outer ring is partially or completely removed by the dust-scraping structure, the impeller continues to rotate and enters the clearance range. Since the radial distance between the dust-scraping structure and the outer ring is smaller than the clearance between the outer ring and the frame, the sand, frost, salt crystals, and other foreign matter remaining on the frame and the outer ring no longer come into contact, avoiding the phenomenon of the impeller jamming due to frictional resistance formed by foreign matter during the impeller's rotation.

[0015] This technical solution utilizes the casing's own structure to remove foreign objects such as sand, frost, and salt crystals from the outer ring of the impeller, preventing these foreign objects from obstructing the impeller's rotation and causing it to jam. The structure is simple, helps to improve the service life of the fan, and is highly practical. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is an exploded view of one embodiment of the present invention; Figure 2 yes Figure 1 A top view schematic diagram of one embodiment is shown; Figure 3 yes Figure 2 A magnified view of a portion of point A shown; Figure 4 yes Figure 1 A cross-sectional schematic diagram of one embodiment is shown.

[0017] The symbols in the attached image are explained as follows: 1. Housing; 2. Wind wheel; 21. Outer ring; 11. Base; 12. Installation space; 13. Opening; 3. Clearance gap; 121. First frame; 122. Second frame; 123. Third frame; 124. Fourth frame; 125. Arc-shaped wall; 126. Reinforcing rib; 127. Connecting plate; 41. First mounting hole; 42. Second mounting hole; 431. Arc-shaped surface; 432. Protruding surface; 433. Transition surface; 51. Hub; 52. Blade; 6. Motor. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] See Figure 1 The present invention provides a fan, including a housing 1 and a fan wheel 2. The housing 1 includes a base 11 and a frame. The frame is disposed on the outer periphery of the base 11 and extends upward. An installation space 12 is formed on the inner side of the frame. The frame has at least one opening 13 on its side and a dust scraping structure is formed at the opening 13.

[0023] The impeller 2 is installed in the installation space 12. The outer circumference of the impeller 2 is provided with an outer ring 21. An clearance gap 3 is formed between the outer ring 21 and the frame. The radial distance between the dust scraping structure and the outer ring 21 is less than the clearance gap 3.

[0024] By setting an opening 13 on the frame, a dust-scraping structure can be formed at the opening 13. When foreign objects such as sand, frost, and salt crystals on the outer ring 21 reach a certain thickness, the impeller 2 will bring these foreign objects into contact with the dust-scraping structure during rotation, thereby scraping away the foreign objects. After the dust-scraping structure has partially or completely removed the foreign objects on the outer ring 21, the impeller 2 continues to rotate and enters the clearance gap 3. Since the radial distance between the dust-scraping structure and the outer ring 21 is smaller than the clearance gap 3 between the outer ring 21 and the frame, the remaining sand, frost, and salt crystals on the frame and the outer ring 21 no longer come into contact, avoiding the phenomenon of the impeller 2 getting stuck due to frictional resistance caused by the foreign objects during the rotation of the impeller 2.

[0025] The fan in this technical solution utilizes the structure of the casing 1 itself to remove foreign objects such as sand, frost, and salt crystals from the outer ring 21 of the impeller 2, preventing foreign objects on the impeller 2 from obstructing the rotation of the impeller 2 and causing the impeller 2 to jam. The structure is simple and helps to improve the service life of the fan, making it highly practical.

[0026] See Figure 1 and Figure 2 In some embodiments, the frame includes a first frame 121, a second frame 122, a third frame 123, and a fourth frame 124 spaced apart circumferentially. Openings 13 are provided between the first frame 121 and the second frame 122, between the second frame 122 and the third frame 123, between the third frame 123 and the fourth frame 124, and between the fourth frame 124 and the first frame 121. By increasing the number of openings 13, the impeller 2 can repeatedly scrape away foreign matter such as sand, frost, and salt crystals from the surface of the outer ring 21 during rotation, greatly reducing the resistance caused by foreign matter on the impeller 2, ensuring normal rotation of the impeller 2, and thus improving the service life of the fan.

[0027] It is understandable that the number of openings 13 can be set to two or three, etc., according to actual needs. The positions of the openings 13 can be evenly distributed on the outer periphery of the wind turbine 2, or they can be reasonably distributed according to actual needs. There are no restrictions here.

[0028] Further, see Figure 2 The base 11 has a rectangular cross-section, with the first frame 121, the second frame 122, the third frame 123, and the fourth frame 124 positioned at the four corners of the base 11. By distributing the first frame 121, the second frame 122, the third frame 123, and the fourth frame 124 at the four corners of the rectangular base 11, not only is it possible to avoid the frames occupying extra space and to make the overall structure of the fan more compact, but it also provides a certain degree of protection for the impeller 2, making it highly practical.

[0029] Further, see Figure 1 The first frame 121, the second frame 122, the third frame 123, and the fourth frame 124 all include an arc-shaped wall 125 and a reinforcing rib 126. The reinforcing rib 126 is located on the outside of the arc-shaped wall 125 and is connected to the base 11 in the vertical direction. This helps to increase the structural rigidity of the first frame 121, the second frame 122, the third frame 123, and the fourth frame 124, ensuring that the dust scraping structure can still effectively scrape away foreign objects such as sand, frost, and salt crystals on the outer ring 21 of the impeller 2 without being damaged, even in extremely harsh environments.

[0030] Furthermore, see Figure 1 , Figure 2 and Figure 3 The top of the arc-shaped wall 125 is provided with a connecting plate 127, and the top of the reinforcing rib 126 is connected to the connecting plate 127, which can further enhance the structural rigidity of the first frame 121, the second frame 122, the third frame 123 and the fourth frame 124.

[0031] In some embodiments, see Figures 1 to 3 The fan also includes connectors (not shown in the figure). Each connecting plate 127 is provided with a first mounting hole 41, and each corner of the base 11 is provided with a second mounting hole 42. The first mounting holes 41 and the second mounting holes 42 correspond to each other in the vertical direction. The housing 1 is connected to the external mounting position after passing through the first mounting holes 41 and the second mounting holes 42 through the connectors. The four corners of the housing 1 are respectively installed to the external mounting position through the connectors, which can effectively ensure the stability of the fan installation. At the same time, since the connectors are also connected to the connecting plates 127, the rigidity of the frame structure is further enhanced, which can effectively ensure the stable operation of scraping foreign objects such as sand, frost, and salt crystals on the outer ring 21.

[0032] In some embodiments, see Figure 2 and Figure 3 The inner walls of the first frame 121, the second frame 122, the third frame 123, and the fourth frame 124 all include an arc-shaped surface 431, a raised surface 432, and a transition surface 433. Both sides of the arc-shaped surface 431 are connected to the raised surface 432. The side of the raised surface 432 away from the arc-shaped surface 431 is connected to the transition surface 433. The side of the transition surface 433 away from the arc-shaped surface 431 extends vertically to the outer side of the base 11. A clearance gap 3 is formed between the outer ring 21 and the arc-shaped surface 431. The dust scraping structure includes the raised surface 432, or includes the raised surface 432 and the transition surface 433.

[0033] When the foreign object is relatively thin, the raised surfaces 432 on both sides of the arc-shaped surface 431 of the first frame 121, second frame 122, third frame 123, and fourth frame 124 scrape away the foreign object at the outer ring 21, which reduces the contact area between the frame and the foreign object. This reduces the frictional resistance to the impeller 2 while quickly removing the foreign object. When the foreign object is relatively thick, the transition surface 433 is used to scrape away a small amount of the foreign object first, forming a transition.

[0034] Further, see Figure 2 The clearance 3 formed between the arc surface 431 of the first frame 121, the second frame 122, the third frame 123 and the fourth frame 124 and the outer ring 21 are all the same size, so as to avoid the wind turbine 2 being greatly obstructed due to the individual clearance 3 being too small, and to ensure that the wind turbine 2 operates smoothly during rotation.

[0035] In some embodiments, see Figure 1 , Figure 2 and Figure 4 The wind turbine 2 includes a hub 51, blades 52 and an outer ring 21. The blades 52 are circumferentially spaced on the outer periphery of the hub 51 and connected to the inner side of the outer ring 21. The outer ring 21 protects the blades 52, which not only improves the service life of the wind turbine 2, but also ensures the safety of use.

[0036] Further, see Figure 4 The bottom of the hub 51 is provided with a connection hole, and the base 11 is provided with a motor 6 in the installation space 12. The output shaft of the motor 6 extends into the connection hole to connect with the hub 51, thereby driving the wind turbine 2 to rotate.

[0037] 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.

[0038] 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 fan, characterized in that, include: The housing includes a base and a frame. The frame is disposed on the outer periphery of the base and extends upward. An installation space is formed on the inner side of the frame. The frame has at least one opening on its side and a dust scraping structure is formed at the opening. A wind turbine is installed in the installation space. The wind turbine has an outer ring around its periphery. A clearance is formed between the outer ring and the frame. The distance between the dust scraping structure and the outer ring in the radial direction is smaller than the clearance.

2. The fan according to claim 1, characterized in that, The frame includes a first frame, a second frame, a third frame, and a fourth frame arranged circumferentially, with openings provided between the first and second frames, between the second and third frames, between the third and fourth frames, and between the fourth frame and the first frame.

3. The fan according to claim 2, characterized in that, The base has a rectangular cross-section, and the first frame, the second frame, the third frame and the fourth frame are respectively located at the four corners of the base.

4. The fan according to claim 3, characterized in that, The first frame, the second frame, the third frame, and the fourth frame all include an arc-shaped wall and a reinforcing rib. The reinforcing rib is located on the outside of the arc-shaped wall and is connected to the base in the vertical direction.

5. The fan according to claim 4, characterized in that, The top of the arc-shaped wall is provided with a connecting plate, and the top of the reinforcing rib is connected to the connecting plate.

6. The fan according to claim 5, characterized in that, It also includes connectors, each of the connectors is provided with a first mounting hole, and each corner of the base is provided with a second mounting hole. The first mounting hole and the second mounting hole are corresponding to each other in the vertical direction. The housing is connected to the external mounting position after passing through the first mounting hole and the second mounting hole respectively through the connectors.

7. The fan according to claim 2, characterized in that, The inner wall surfaces of the first frame, the second frame, the third frame, and the fourth frame all include an arc-shaped surface, a raised surface, and a transition surface. Both sides of the arc-shaped surface are connected to the raised surface. The side of the raised surface away from the arc-shaped surface is connected to the transition surface. The side of the transition surface away from the arc-shaped surface extends in the vertical direction to the outer side of the base. The raised surface forms the dust scraping structure, and the clearance gap is formed between the outer ring and the arc-shaped surface.

8. The fan according to claim 7, characterized in that, The clearance gaps formed between the arcuate surfaces of the first frame, the second frame, the third frame, and the fourth frame and the outer ring are all the same size.

9. The fan according to claim 1, characterized in that, The wind turbine includes a hub, blades, and an outer ring. The blades are circumferentially spaced around the outer periphery of the hub and connected to the inner side of the outer ring.

10. The fan according to claim 9, characterized in that, The bottom of the wheel hub is provided with a connection hole, and the base is provided with a motor in the installation space. The output shaft of the motor extends into the connection hole to connect with the wheel hub.

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