Fan and air using device

Abstract

The utility model discloses a fan and use air equipment relates to fan technical field, and the fan includes: shell, impeller, rotor structure and stator structure, the shell has the installation wall part, and the installation wall part defines stator slot and rotor slot, along the first direction, stator slot and rotor slot are located the first side and the second side of installation wall part respectively, and impeller and rotor structure transmission connection and all are located the second side of installation wall part, and at least part of rotor structure is located in rotor slot, and stator structure is located the first side of installation wall part, and stator structure is located in stator slot. According to the fan of the application embodiment, it is favorable to realize the effect of preventing damp to stator structure, is favorable to prolong the service life of stator structure, is favorable to reduce the cost of protecting stator structure, is favorable to reduce the risk of installation wall part falling off, is favorable to improve the reliability when installation wall part protects stator structure, is favorable to improve the reliability of preventing damp to stator structure.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a wind turbine and a wind-using device having the wind turbine. Background Technology

[0002] In related technologies, existing wind turbines use methods such as applying UV adhesive, applying conformal coating, or vacuum coating to protect the stator from moisture and dampness. These methods are costly, and the coatings adhering to the stator surface are at risk of peeling off during the use of the wind turbine. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a fan that facilitates moisture and humidity protection of the stator structure, extends the service life of the stator structure, reduces the cost of protecting the stator structure, reduces the risk of mounting wall detachment, improves the reliability of the mounting wall in protecting the stator structure, and enhances the reliability of moisture and humidity protection treatment of the stator structure.

[0004] This utility model also proposes a wind-using device that uses the above-mentioned fan.

[0005] A fan according to a first aspect of the present invention includes: a housing, an impeller, a rotor structure, and a stator structure. The housing has a mounting wall portion defining a stator slot and a rotor slot. Along a first direction, the stator slot and the rotor slot are respectively located on a first side and a second side of the mounting wall portion. The impeller and the rotor structure are drively connected and are both located on the second side of the mounting wall portion. At least a portion of the rotor structure is located within the rotor slot. The stator structure is located on the first side of the mounting wall portion and is located within the stator slot.

[0006] According to the fan in this application embodiment, a portion of the mounting wall structure can protect and support the stator structure, which helps reduce the erosion of the stator structure by moisture in the external environment, achieves a moisture-proof and damp-proof effect on the stator structure, and extends the service life of the stator structure. Furthermore, the mounting wall can be made of plastic and can be injection molded. Compared with existing technologies that involve coating or adhesiveting the stator structure, the mounting wall and the outer shell are integrated into one piece. The molding method of the mounting wall is simple, which helps reduce the cost of protecting the stator structure, reduces the risk of the mounting wall detaching, improves the reliability of the mounting wall in protecting the stator structure, and enhances the reliability of moisture-proof and damp-proof treatment of the stator structure.

[0007] According to some embodiments of the present invention, the stator slot is constructed in an annular shape, and the stator slot is arranged around the rotor slot along the circumference of the rotor slot.

[0008] According to some embodiments of the present invention, the mounting wall includes: a first wall and a second wall, the first wall being disposed around the second wall along the circumferential edge of the second wall and fixedly connected to the second wall, the second wall protruding from the first wall to the second side to form the stator groove on the first side.

[0009] According to some embodiments of the present invention, the second wall has a stator slot bottom wall, and the middle part of the stator slot bottom wall has a first protrusion protruding into the stator slot so as to form the rotor slot on the second side.

[0010] According to some embodiments of the present invention, the second wall has a stator slot sidewall, the stator slot sidewall having a first sub-wall portion, a second sub-wall portion and a third sub-wall portion, the first sub-wall portion, the second sub-wall portion and the third sub-wall portion being arranged along a first direction, along the first direction, the first sub-wall portion being located on the side of the second sub-wall portion facing the impeller, and the first sub-wall portion, the second sub-wall portion and the third sub-wall portion being arranged radially along the stator slot, along the radial direction of the stator slot, the first sub-wall portion being located on the side of the second sub-wall portion away from the first wall, and the second sub-wall portion being connected between the first sub-wall portion and the third sub-wall portion.

[0011] According to some embodiments of the present invention, the second wall body further has a stator slot bottom wall, the stator slot side wall is connected between the stator slot bottom wall and the first wall body, the first wall body, the second sub-wall portion and the stator slot bottom wall are parallel to each other, the interval distance between the stator slot bottom wall and the second sub-wall portion along the first direction is H1, and the interval distance between the stator slot bottom wall and the first wall body along the first direction is H2, satisfying the relationship: 0.7≤H1 / H2≤0.8.

[0012] According to some embodiments of the present invention, the impeller includes an impeller body and a blade portion. Along the first direction, the blade portion is located on the side of the impeller body away from the mounting wall and is fixed to the impeller body. The impeller body and the blade portion together define an air inlet space. The blade portion includes multiple blades, which are arranged sequentially at intervals along the circumference of the impeller body. The air inlet angle of the blade is α1, and the air outlet angle of the blade is α2, satisfying the relationship: 0.4≤α1 / α2≤0.5.

[0013] According to some embodiments of the present invention, the middle part of the impeller body has a second protrusion protruding into the air inlet space to form a mounting groove on the side of the impeller body facing the mounting wall, and a portion of the mounting wall is located in the mounting groove.

[0014] According to some embodiments of the present invention, at least a portion of the stator slot and / or at least a portion of the rotor slot are located within the mounting slot.

[0015] According to some embodiments of the present invention, the second protrusion has a mounting groove sidewall, a mounting groove bottomwall, and a connecting wall, wherein the connecting wall is connected between the mounting groove sidewall and the mounting groove bottomwall, and the outer surface of the connecting wall is an arc-shaped surface.

[0016] According to some embodiments of this utility model, the arc-shaped surface is a spherical surface, and the radius of the sphere containing the arc-shaped surface is R, satisfying the relationship: 1mm≤R≤1.4mm.

[0017] According to some embodiments of the present invention, the rotor structure includes a magnetic ring, which is located in the mounting groove and fixed to the impeller body.

[0018] According to some embodiments of the present invention, the rotor structure includes: a drive shaft, at least a portion of which is located within the rotor slot, and the drive shaft is fixed to the impeller body.

[0019] According to some embodiments of the present invention, a wiring groove is formed on the first side of the mounting wall, and the wiring groove is connected to the stator groove.

[0020] The air-using device according to a second aspect of the present invention includes the fan described in the above embodiments.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a top view of a fan according to an embodiment of this application; Figure 2 yes Figure 1 Schematic diagram of the cross section at point AA; Figure 3 This is a schematic diagram of a fan according to an embodiment of this application; Figure 4 This is a schematic diagram of the first housing according to an embodiment of this application; Figure 5 yes Figure 4 Schematic diagram of the cross section at point BB; Figure 6 This is a schematic diagram of an impeller according to an embodiment of this application; Figure 7 This is a top view of the impeller according to an embodiment of this application; Figure 8 yes Figure 7 Schematic diagram of cross-section at CC; Figure 9 This is another schematic diagram of a fan according to an embodiment of this application; Figure 10 This is another schematic diagram of a fan according to an embodiment of this application.

[0023] Figure label: Fan 1, The components include: outer casing 10, mounting wall 11, first wall 111, second wall 112, stator slot bottom wall 1121, first protrusion 11211, stator slot side wall 1122, first sub-wall 11221, second sub-wall 11222, third sub-wall 11223, wiring groove 113, stator slot 12, rotor slot 13, first housing 14, second housing 15, and first through hole 151. Impeller 20, impeller body 21, second protrusion 211, mounting groove 212, mounting groove sidewall 2121, mounting groove bottom wall 2122, connecting wall 2123, blade section 22, blade 221, assembly hole 23, air inlet space 24. Rotor structure 30, magnetic ring 31, drive shaft 32, connecting frame 33, bearing structure 34. Stator structure 40. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] The following is for reference. Figures 1-10 According to an embodiment of the present utility model, the fan 1 can be installed in a wind-using device.

[0026] According to the first aspect embodiment of the present invention, the fan 1, such as Figures 1-10As shown, the fan 1 may include: a housing 10, an impeller 20, a rotor structure 30, and a stator structure 40. The housing 10 has a mounting wall 11, which defines a stator slot 12 and a rotor slot 13. Along a first direction, the stator slot 12 and the rotor slot 13 are located on a first side and a second side of the mounting wall 11, respectively. The impeller 20 and the rotor structure 30 are drively connected and are both located on the second side of the mounting wall 11. At least a portion of the rotor structure 30 is located within the rotor slot 13. The stator structure 40 is located on the first side of the mounting wall 11 and is located within the stator slot 12.

[0027] It should be noted that existing methods for moisture-proofing and damp-proofing the stator structure of wind turbines, such as applying UV adhesive, applying conformal coating, or vacuum coating, are costly, and the coatings adhering to the surface of the stator structure are at risk of peeling off during the use of the wind turbine.

[0028] Based on this, this application provides a fan 1, wherein the outer casing 10 of the fan 1 can be made of plastic and can be injection molded. The outer casing 10 may include a first housing 14 and a second housing 15, the first housing 14 and the second housing 15 can be arranged along a first direction, and the first housing 14 and the second housing 15 can be snap-fitted together. When the fan 1... Figure 2 When setting the direction, the first direction can be... Figure 2 In the Z direction. The outer casing 10 may have a mounting wall 11, and the first casing 14 may have a mounting wall 11, which may define stator slots 12 and rotor slots 13. Along the first direction, stator slots 12 and rotor slots 13 may be located on a first side and a second side of the mounting wall 11, respectively. The first side and the second side may be two sides of the mounting wall 11 along the first direction. The impeller 20 and rotor structure 30 may be drively connected. The impeller 20 and rotor structure 30 may be located on the same side of the mounting wall 11 along the first direction, and both the impeller 20 and rotor structure 30 may be located on the second side of the mounting wall 11. The rotor structure 30 may drive the impeller 20 to rotate, and at least a portion of the rotor structure 30 may be located within the rotor slot 13. The stator structure 40 may be located on the first side of the mounting wall 11, and the stator structure 40 and rotor structure 30 may be located on two sides of the mounting wall 11 along the first direction, respectively. The stator structure 40 and rotor structure 30 may be spaced apart. The stator structure 40 can be located inside the stator slot 12. The stator structure 40 can be matched with the inner wall of the stator slot 12. Part of the structure of the mounting wall 11 can wrap the stator structure 40 and can protect and support the stator structure 40.

[0029] In this embodiment, a portion of the mounting wall 11 can protect and support the stator structure 40, reducing the erosion of the stator structure 40 by moisture in the external environment, achieving moisture-proof and damp-proof effects, and extending the service life of the stator structure 40. Furthermore, the mounting wall 11 can be made of plastic and can be injection molded. Compared to existing techniques for coating and adhesiveting the stator structure 40, the mounting wall 11 and the outer shell 10 can be integrated into one unit. The molding method of the mounting wall 11 is simple, which helps reduce the cost of protecting the stator structure 40, reduces the risk of the mounting wall 11 detaching, improves the reliability of the mounting wall 11 in protecting the stator structure 40, and enhances the reliability of moisture-proof and damp-proof treatment of the stator structure 40.

[0030] As an example, along the first direction, the stator slot 12 has an open end on the side opposite to the rotor slot 13. When the stator structure 40 is assembled in the stator slot 12, potting compound can be injected into the stator slot 12 through the open end of the stator slot 12. This helps to fix the stator structure 40 and the mounting wall 11, further improves the reliability of the mounting wall 11 in protecting the stator structure 40, further reduces the probability of moisture in the external environment eroding the stator structure 40, and further extends the service life of the stator structure 40.

[0031] In some embodiments of this utility model, such as Figure 2 and Figure 5 As shown, the stator slot 12 is constructed in an annular shape, and the stator slot 12 is arranged around the rotor slot 13 along the circumference of the rotor slot 13.

[0032] The stator slot 12 can be constructed as a ring, and can be arranged around the rotor slot 13 circumferentially. The central axis of the stator slot 12 extending in the first direction can be collinear with the centerline axis of the rotor slot 13 along the first direction. By arranging the stator slot 12 around the rotor slot 13 circumferentially, it is beneficial to improve the structural compactness of the fan 1, reduce the space occupied by the stator structure 40 and rotor structure 30 within the fan 1, and increase the air intake of the impeller 20. Furthermore, the stator structure 40 can be located within the stator slot 12, and at least a portion of the rotor structure 30 can be located within the rotor slot 13. This helps to ensure that the rotating magnetic field generated by the stator structure 40 has a uniform intensity in the circumferential direction of the rotor slot 13, which helps to reduce the probability of excessively strong or weak local magnetic fields, reduces the probability of local heating of the stator structure 40 due to uneven magnetic circuit, and further extends the service life of the stator structure 40.

[0033] In some embodiments of this utility model, such as Figure 2 and Figure 5As shown, the mounting wall 11 may include: a first wall 111 and a second wall 112. The first wall 111 is disposed around the second wall 112 along the circumferential edge of the second wall 112 and is fixedly connected to the second wall 112. The second wall 112 protrudes from the first wall 111 to a second side to form a stator groove 12 on a first side.

[0034] The first wall 111 can be arranged around the second wall 112 along its circumferential edge. The first wall 111 can be connected to the circumferential edge of the second wall 112, the first wall 111 can be fixedly connected to the second wall 112, the first wall 111 can be adhesively connected to the second wall 112, and the first wall 111 can be integrally formed with the second wall 112. Along the first direction, the second wall 112 protrudes from the first wall 111 to the second side, thereby forming a stator groove 12 on the first side of the mounting wall portion 11. The stator groove 12 can be open towards the first side of the mounting wall portion 11, which is beneficial to further realize the effect of placing the stator structure 40 on the first side of the mounting wall portion 11. At least a portion of the second wall 112 can wrap around the stator structure 40, and part of the structure of the second wall 112 can protect and support the stator structure 40. This simplifies the forming method of the stator groove 12 and further reduces the cost of protecting the stator structure 40.

[0035] In some embodiments of this utility model, such as Figure 2 and Figure 5 As shown, the second wall 112 has a stator slot bottom wall 1121, and the middle part of the stator slot bottom wall 1121 has a first protrusion 11211 protruding into the stator slot 12 so as to form a rotor slot 13 on the second side.

[0036] The second wall 112 may have a stator slot bottom wall 1121. A first protrusion 11211 may be formed in the middle of the stator slot bottom wall 1121. The first protrusion 11211 may protrude into the stator slot 12 in a first direction. In other words, in the first direction, the first protrusion 11211 may protrude from the stator slot bottom wall 1121 toward the first side of the mounting wall 11, thereby forming a rotor slot 13 on the second side of the mounting wall 11. At least a portion of the rotor slot 13 may be arranged opposite to the stator slot 12 in the radial direction of the stator slot 12. This is beneficial to further realize the effect that the stator slot 12 is arranged around the rotor slot 13 in the circumference of the rotor slot 13, which is beneficial to further improve the structural compactness of the fan 1, further reduce the space occupied by the stator structure 40 and the rotor structure 30 in the fan 1, further increase the air intake of the impeller 20, and improve the static pressure of the fan 1.

[0037] In some embodiments of this utility model, such as Figure 2 and Figure 5As shown, the second wall 112 has a stator slot sidewall 1122, which has a first sub-wall portion 11221, a second sub-wall portion 11222, and a third sub-wall portion 11223. The first sub-wall portion 11221, the second sub-wall portion 11222, and the third sub-wall portion 11223 are arranged along a first direction. Along the first direction, the first sub-wall portion 11221 is located on the side of the second sub-wall portion 11222 facing the impeller 20, and the first sub-wall portion 11221, the second sub-wall portion 11222, and the third sub-wall portion 11223 are arranged radially along the stator slot 12. Along the radial direction of the stator slot 12, the first sub-wall portion 11221 is located on the side of the second sub-wall portion 11222 away from the first wall 111, and the second sub-wall portion 11222 is connected between the first sub-wall portion 11221 and the third sub-wall portion 11223.

[0038] The stator slot sidewall 1122 may have a first sub-wall portion 11221, a second sub-wall portion 11222, and a third sub-wall portion 11223. These portions may be arranged along a first direction and sequentially connected along the first direction. They may be bonded together or integrally formed. Along the first direction, the first sub-wall portion 11221 may be located on the side of the second sub-wall portion 11222 facing the impeller 20, and the third sub-wall portion 11223 may be located on the side of the second sub-wall portion 11222 away from the impeller 20. The first sub-wall portion 11221, the second sub-wall portion 11222, and the third sub-wall portion 11223 can be arranged radially along the stator slot 12. Along the radial direction of the stator slot 12, the first sub-wall portion 11221 can be located on the side of the second sub-wall portion 11222 opposite to the first wall body 111. The second sub-wall portion 11222 can be connected between the first sub-wall portion 11221 and the third sub-wall portion 11223. The first sub-wall portion 11221 can be bent and connected to the second sub-wall portion 11222, and the second sub-wall portion 11222 can be bent and connected to the third sub-wall portion 11223.

[0039] By providing the stator slot sidewall 1122 with a first sub-wall portion 11221, a second sub-wall portion 11222, and a third sub-wall portion 11223, it is beneficial to improve the structural strength of the stator slot sidewall 1122, to improve the reliability of the second wall 112 in protecting and supporting the stator structure 40, to improve the reliability of the fan 1, and to extend the service life of the fan 1.

[0040] In some embodiments of this utility model, such as Figure 2 and Figure 5As shown, the second wall 112 also has a stator slot bottom wall 1121, and a stator slot side wall 1122 connected between the stator slot bottom wall 1121 and the first wall 111. The first wall 111, the second sub-wall portion 11222 and the stator slot bottom wall 1121 are parallel to each other. The distance between the stator slot bottom wall 1121 and the second sub-wall portion 11222 along the first direction is H1, and the distance between the stator slot bottom wall 1121 and the first wall 111 along the first direction is H2, satisfying the relationship: 0.7≤H1 / H2≤0.8.

[0041] The second wall 112 may have a stator slot bottom wall 1121 and a stator slot side wall 1122. The stator slot side wall 1122 may be connected to the stator slot bottom wall 1121, and the stator slot side wall 1122 and the stator slot bottom wall 1121 together define the stator slot 12. The stator slot side wall 1122 may be connected between the stator slot bottom wall 1121 and the first wall 111. The first wall 111, the second sub-wall portion 11222, and the stator slot bottom wall 1121 may be parallel to each other. The second sub-wall portion 11222 may form an angle with the first sub-wall portion 11221, and the angle may be a right angle or a similar right angle. The second sub-wall portion 11222 may form an angle with the third sub-wall portion 11223, and the angle may be a right angle or a similar right angle. The distance between the stator slot bottom wall 1121 and the second sub-wall 11222 along the first direction can be H1, and the distance between the stator slot bottom wall 1121 and the first wall 111 along the first direction can be H2, satisfying the relationship: 0.7≤H1 / H2≤0.8. In other words, the distance H1 between the stator slot bottom wall 1121 and the second sub-wall 11222 along the first direction satisfies the relationship: 0.7H2≤H1≤0.8H2.

[0042] For example, the spacing between the stator slot bottom wall 1121 and the second sub-wall portion 11222 along the first direction can be 0.7H2, 0.73H2, 0.78H2, 0.8H2, etc. The spacing between the stator slot bottom wall 1121 and the second sub-wall portion 11222 along the first direction can be within the range of 0.7H2 to 0.8H2. Any value, including the endpoint value, is an optional spacing between the stator slot bottom wall 1121 and the second sub-wall portion 11222 along the first direction of this utility model. If the distance between the stator slot bottom wall 1121 and the second sub-wall portion 11222 along the first direction is less than 0.7H2, the distance between the stator slot bottom wall 1121 and the second sub-wall portion 11222 along the first direction may be too small relative to the distance between the stator slot bottom wall 1121 and the first wall 111 along the first direction. This would result in a small height dimension of the stator structure 40 along the first direction, affecting the electromagnetic conversion efficiency of the fan 1, thereby reducing the rotational speed of the impeller 20 and decreasing the air intake and exhaust volume of the impeller 20. If the distance between the stator slot bottom wall 1121 and the second sub-wall portion 11222 along the first direction is greater than 0.8H2, the installation height of the stator slot bottom wall 1121 may be too large, resulting in a small height dimension of the impeller 20 along the first direction and decreasing the air intake and exhaust volume of the impeller 20. Therefore, the distance between the bottom wall 1121 of the stator slot and the second wall portion 11222 along the first direction is between 0.7H2 and 0.8H2, which makes the height dimension of the stator structure 40 along the first direction reasonable, which is conducive to improving the air intake and air output of the fan 1 and improving the air delivery capacity of the fan 1.

[0043] In some embodiments of this utility model, such as Figures 6-8 As shown, the impeller 20 may include an impeller body 21 and a blade portion 22. Along the first direction, the blade portion 22 is located on the side of the impeller body 21 away from the mounting wall portion 11 and is fixed to the impeller body 21. The impeller body 21 and the blade portion 22 together define an air inlet space 24. The blade portion 22 includes a plurality of blades 221. The plurality of blades 221 are arranged sequentially at intervals along the circumference of the impeller body 21. The air inlet angle of the blades 221 is α1, and the air outlet angle of the blades 221 is α2, satisfying the relationship: 0.4≤α1 / α2≤0.5.

[0044] The impeller 20 and the mounting wall 11 can be arranged along a first direction, and the impeller 20 can be located on the second side of the mounting wall 11. Along the first direction, the blade portion 22 can be located on the side of the impeller body 21 away from the mounting wall 11, and the blade portion 22 can be fixed to the impeller body 21, and the blade portion 22 can be integrally formed with the impeller body 21. The impeller body 21 and the blade portion 22 can jointly define an air inlet space 24, and gas can flow into the air inlet space 24 from the side of the impeller 20 away from the mounting wall 11. The blade portion 22 can include multiple blades 221, which can be arranged sequentially along the circumference of the impeller body 21. Any two adjacent blades 221 can be spaced apart, and the spacing between any two adjacent blades 221 can be equal. The blades 221 can be constructed as an arc-shaped structure. The air inlet angle of blade 221 can be α1, the air outlet angle of blade 221 can be α2, and the ratio between the air inlet angle and the air outlet angle of blade 221 can be α1 / α2, satisfying the relationship: 0.4≤α1 / α2≤0.5.

[0045] It should be noted that the air inlet angle of blade 221 can be the angle between the tangent at the leading edge of the pressure surface side of blade 221 and the tangent at the circumferential connection of the corresponding blade 221 and blade section 22, and the air outlet angle of blade 221 can be the angle between the tangent at the trailing edge of the pressure surface side of blade 221 and the tangent at the circumferential connection of the corresponding blade 221 and blade section 22.

[0046] For example, the ratio between the inlet angle and the outlet angle of blade 221 can be 0.4, 0.43, 0.47, 0.5, etc. The ratio can be within the range of 0.4 to 0.5, including any value including the endpoints. Any ratio between the inlet angle and the outlet angle of blade 221 is a selectable ratio for this invention. If the ratio between the inlet angle and the outlet angle of blade 221 is less than 0.4, the airflow in and out of impeller 20 is reduced. If the ratio between the inlet angle and the outlet angle of blade 221 is greater than 0.5, the airflow in and out of impeller 20 is reduced. Therefore, the ratio between the air inlet angle and the air outlet angle of blade 221 is between 0.4 and 0.5, which is beneficial to further increase the air inlet and outlet volume of fan 1 and further improve the air delivery capacity of fan 1.

[0047] As an example, such as Figure 10As shown, the second housing 15 may have a first through hole 151, which can penetrate the second housing 15 along its thickness direction. By providing the first through hole 151, it is beneficial to reduce the probability that the second housing 15 will obstruct gas from flowing into the air inlet space 24 from the side of the impeller 20 away from the mounting wall 11, which is beneficial to connecting the air inlet space 24 with the external environment and improving the efficiency of gas flowing into the air inlet space 24.

[0048] In some embodiments of this utility model, such as Figure 6 and Figure 8 As shown, the impeller body 21 has a second protrusion 211 in the middle that protrudes into the air inlet space 24, so as to form a mounting groove 212 on the side of the impeller body 21 facing the mounting wall 11, and a portion of the mounting wall 11 is located in the mounting groove 212.

[0049] A second protrusion 211 may be formed in the middle of the impeller body 21. The second protrusion 211 may protrude into the air inlet space 24, so that a mounting groove 212 may be formed on the side of the impeller body 21 facing the mounting wall 11. The mounting groove 212 may be open towards the side of the impeller 20 facing the mounting wall 11. Part of the mounting wall 11 may be located in the mounting groove 212, which is beneficial to make the structure of the stator structure 40, rotor structure 30 and impeller 20 more compact, which is beneficial to further improve the structural compactness of the fan 1, which is beneficial to increase the height dimension of the air inlet space 24 along the first direction, which is beneficial to further increase the air intake volume of the fan 1, and which is beneficial to further improve the air delivery capacity of the fan 1.

[0050] In some embodiments of this utility model, such as Figure 2 As shown, at least a portion of the stator slot 12 and / or at least a portion of the rotor slot 13 are located within the mounting slot 212.

[0051] At least a portion of the stator slot 12 may be located within the mounting slot 212, or at least a portion of the rotor slot 13 may be located within the mounting slot 212, or at least a portion of the stator slot 12 may be located within the mounting slot 212, and at least a portion of the rotor slot 13 may be located within the mounting slot 212. In this embodiment, the example of at least a portion of the stator slot 12 being located within the mounting slot 212 and at least a portion of the rotor slot 13 being located within the mounting slot 212 will be used for illustration. By setting at least a portion of the stator slot 12 to be located within the mounting slot 212 and at least a portion of the rotor slot 13 to be located within the mounting slot 212, at least a portion of the stator structure 40 and at least a portion of the rotor structure 30 can be located within the mounting slot 212. This is beneficial for further reducing the space occupied by the stator structure 40 and rotor structure 30 within the fan 1, for further improving the structural compactness of the fan 1, for increasing the height dimension of the air inlet space 24 along the first direction, for further increasing the air intake volume of the fan 1, for further improving the air delivery capacity of the fan 1, and for improving the static pressure of the fan 1.

[0052] As an example, such as Figure 2 As shown, at least a portion of the second wall 112 can be located within the mounting groove 212, and at least a portion of the first protrusion 11211 can be located within the mounting groove 212. This is beneficial for further reducing the space occupied by the stator structure 40 and the rotor structure 30 within the fan 1, for increasing the height dimension of the air inlet space 24 along the first direction, for further increasing the air intake volume of the fan 1, and for further improving the air delivery capacity of the fan 1.

[0053] In some embodiments of this utility model, such as Figure 8 As shown, the second protrusion 211 has a mounting groove sidewall 2121, a mounting groove bottomwall 2122 and a connecting wall 2123. The connecting wall 2123 is connected between the mounting groove sidewall 2121 and the mounting groove bottomwall 2122, and the outer surface of the connecting wall 2123 is an arc-shaped surface.

[0054] The second protrusion 211 has a mounting groove sidewall 2121, a mounting groove bottomwall 2122, and a connecting wall 2123. The mounting groove bottomwall 2122 can be parallel to the stator groove bottomwall 1121. The mounting groove sidewall 2121 and the mounting groove bottomwall 2122 can jointly define the mounting groove 212. The mounting groove sidewall 2121 can be perpendicular to the mounting groove bottomwall 2122. The connecting wall 2123 can be connected between the mounting groove sidewall 2121 and the mounting groove bottomwall 2122. The outer surface of the connecting wall 2123 can be an arc-shaped surface, so that the mounting groove sidewall 2121 and the mounting groove bottomwall 2122 can be smoothly connected. This helps to reduce the probability that the connecting wall 2123 obstructs the flow of gas to the blade section 22, which helps to reduce the resistance encountered by the gas when flowing to the blade section 22, and helps to improve the air intake efficiency of the impeller 20.

[0055] In some embodiments of this utility model, such as Figure 8 As shown, the arc surface is a spherical surface, and the radius of the sphere containing the arc surface is R, satisfying the relationship: 1mm≤R≤1.4mm.

[0056] The arc-shaped surface can be constructed as a spherical surface, connecting the outer surface of the mounting groove sidewall 2121 and the outer surface of the mounting groove bottom wall 2122. For example, the radius of the sphere containing the arc-shaped surface can be 1mm, 1.1mm, 1.25mm, 1.3mm, 1.4mm, etc., and any radius within the range of 1mm to 1.4mm, including endpoint values, is an optional radius for the sphere containing the arc-shaped surface in this invention. If the radius of the sphere containing the arc-shaped surface is less than 1mm, the arc-shaped surface of the connecting wall 2123 is reduced, and the connecting wall 2123 easily obstructs the gas flow to the blade portion 22, reducing the air intake of the impeller 20. If the radius of the sphere containing the arc-shaped surface is greater than 1.4mm, it is not convenient to form the connecting wall 2123, increasing the processing difficulty of the connecting wall 2123. Therefore, the radius of the sphere containing the arc surface is between 1 mm and 1.4 mm, which makes the connecting wall 2123 easy to form while reducing the obstruction of the outer surface of the connecting wall 2123 to the gas flow to the blade section 22. This is beneficial to further increase the air intake of the impeller 20 and further improve the static pressure of the fan 1.

[0057] In some embodiments of this utility model, such as Figure 2 As shown, the rotor structure 30 may include a magnetic ring 31, which is located in the mounting groove 212 and fixed to the impeller body 21.

[0058] The magnetic ring 31 can be located within the mounting groove 212. The magnetic ring 31 can be arranged circumferentially around the stator groove 12. The magnetic ring 31 can be fixed to the impeller body 21, and can be connected to the impeller body 21 by means of bonding, snap-fitting, or other methods. When the fan 1 is powered on, the stator structure 40 can generate a rotating magnetic field. The magnetic ring 31 is driven to rotate by electromagnetic force in the rotating magnetic field. Simultaneously, the rotation of the magnetic ring 31 drives the impeller 20 to rotate, thus achieving the effect of the stator structure 40 and the rotor structure 30 cooperating to drive the impeller 20 to rotate.

[0059] As an example, along the first direction, the central axis of the magnetic ring 31 and the central axis of the impeller 20 are collinear, which helps to reduce the probability of the magnetic ring 31 deviating when driving the impeller 20 to rotate, and helps to extend the service life of the magnetic ring 31 and the impeller 20.

[0060] As an example, such as Figure 2 As shown, the magnetic ring 31 can be connected to the impeller 20 through the connecting frame 33, the magnetic ring 31 can be bonded to the connecting frame 33, and the connecting frame 33 can be bonded to the impeller 20.

[0061] In some embodiments of this utility model, such as Figure 2 As shown, the rotor structure 30 may include a drive shaft 32, at least a portion of which is located within the rotor slot 13, and the drive shaft 32 is fixed to the impeller body 21.

[0062] At least a portion of the drive shaft 32 may be located within the rotor slot 13. The drive shaft 32 may be fixedly connected to the impeller body 21 by means of bonding, snap-fitting, or other methods. When the magnetic ring 31 drives the impeller 20 to rotate together, the impeller 20 can drive the drive shaft 32 to rotate synchronously. By setting the drive shaft 32, the stability of the impeller 20 during rotation is improved.

[0063] As an example, along the first direction, the central axis of the magnetic ring 31, the central axis of the drive shaft 32, and the central axis of the impeller 20 can be collinear, which helps to reduce the probability of the magnetic ring 31 driving the impeller 20 to rotate and the impeller 20 driving the drive shaft 32 to rotate, and helps to further extend the service life of the rotor structure 30 and the impeller 20.

[0064] As an example, such as Figure 2 and Figure 8 As shown, a mounting hole 23 can be formed in the middle of the second protrusion 211, into which the drive shaft 32 can extend and be fixedly connected to the impeller body 21. A first bearing 34 can be provided in the rotor slot 13. The outer ring of the first bearing 34 can be fixedly connected to the inner wall of the rotor slot 13, and the drive shaft 32 can pass through the inner ring of the first bearing 34. The drive shaft 32 can abut against the inner wall of the inner ring of the first bearing 34, allowing the inner and outer rings of the first bearing 34 to rotate relative to each other, thus enabling the drive shaft 32 to rotate relative to the rotor slot 13. When the magnetic ring 31 drives the impeller 20 to rotate, the impeller 20 can drive the drive shaft 32 to rotate synchronously. By providing the first bearing 34, the drive shaft 32 can rotate more smoothly, further improving the stability of the impeller 20 during rotation.

[0065] In some embodiments of this utility model, such as Figure 9 As shown, a wiring groove 113 is formed on the first side of the mounting wall 11, and the wiring groove 113 is connected to the stator groove 12.

[0066] Along the first direction, a wiring groove 113 can be formed on the first side of the mounting wall 11. The wiring groove 113 can extend radially along the mounting wall 11 and can be recessed towards the interior of the mounting wall 11. The wiring harness used to supply power to the fan 1 can be housed in the wiring groove 113, which helps to reduce the probability of the wiring harness protruding from the first side of the mounting wall 11 and the probability of the wiring harness interfering with the operation of other components in the air-using equipment. The wiring groove 113 can communicate with the stator slot 12, and the wiring harness used to supply power to the fan 1 can be connected to the stator structure 40. The wiring harness can input electrical energy into the stator structure 40 of the fan 1, thereby driving the stator structure 40 to generate a rotating magnetic field. The magnetic ring 31 is driven to rotate by electromagnetic force in the rotating magnetic field. While the magnetic ring 31 rotates, it can drive the impeller 20 to rotate together, which helps to further realize the effect of the stator structure 40 and the rotor structure 30 cooperating to drive the impeller 20 to rotate.

[0067] As an example, along the extension direction of the wiring trough 113, a limiting structure 1131 can be provided at the end of the wiring trough 113 away from the stator slot 12. The limiting structure 1131 can be integrally formed with the mounting wall 11. The limiting structure 1131 can cooperate with the wire harness in the wiring trough 113 to limit and reduce the probability of the wire harness falling out of the wiring trough 113, and improve the reliability of the wire harness installed in the wiring trough 113.

[0068] The air-using device according to a second aspect of the present invention includes the fan 1 in the above embodiment.

[0069] According to the embodiments of this application, using the fan 1 in the above embodiments is beneficial to extending the service life of the air-using equipment and increasing its working efficiency.

[0070] As an example, such as Figure 2 As shown, the height dimension of fan 1 along the first direction can be H3, satisfying the relationship: H3 ≤ 20.1mm. When fan 1 is installed inside the air-using equipment, the limited space inside the air-using equipment restricts the height dimension of fan 1 along the first direction. For example, the height dimension of fan 1 along the first direction can be 19.5mm, 19.8mm, 20.1mm, etc., as long as it is less than or equal to 20.1mm. Any value, including the endpoint value, is a selectable height dimension of fan 1 along the first direction according to this invention. If the height dimension of fan 1 along the first direction is greater than 20.1mm, it becomes too large, preventing successful installation inside the air-using equipment. Therefore, a height dimension of fan 1 less than or equal to 20.1mm allows for successful installation inside the air-using equipment.

[0071] Other components and operations of the fan 1 and the air-using equipment according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., 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, the 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.

[0073] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fan, characterized in that, include: The housing (10) has a mounting wall (11) defining a stator slot (12) and a rotor slot (13) in a first direction, wherein the stator slot (12) and the rotor slot (13) are located on a first side and a second side of the mounting wall (11), respectively. Impeller (20), rotor structure (30) and stator structure (40), the impeller (20) and the rotor structure (30) are connected in drive and are both located on the second side of the mounting wall (11), at least a portion of the rotor structure (30) is located in the rotor slot (13), the stator structure (40) is located on the first side of the mounting wall (11), and the stator structure (40) is located in the stator slot (12).

2. The fan according to claim 1, characterized in that, The stator slot (12) is annular and is arranged around the rotor slot (13) along the circumference of the rotor slot (13).

3. The fan according to claim 1, characterized in that, The mounting wall (11) includes a first wall (111) and a second wall (112). The first wall (111) is disposed around the second wall (112) along the circumferential edge of the second wall (112) and is fixedly connected to the second wall (112). The second wall (112) protrudes from the first wall (111) to the second side to form the stator groove (12) on the first side.

4. The fan according to claim 3, characterized in that, The second wall (112) has a stator slot bottom wall (1121), the middle of which has a first protrusion (11211) protruding into the stator slot (12) to form the rotor slot (13) on the second side.

5. The fan according to claim 3, characterized in that, The second wall body (112) has a stator slot sidewall (1122), the stator slot sidewall (1122) having a first sub-wall portion (11221), a second sub-wall portion (11222), and a third sub-wall portion (11223), the first sub-wall portion (11221), the second sub-wall portion (11222), and the third sub-wall portion (11223) arranged along the first direction, along the first direction, the first sub-wall portion (11221) being located on the second sub-wall portion (11222) facing the impeller. 20) on one side, and the first sub-wall portion (11221), the second sub-wall portion (11222) and the third sub-wall portion (11223) are arranged radially along the stator groove (12). Along the radial direction of the stator groove (12), the first sub-wall portion (11221) is located on the side of the second sub-wall portion (11222) away from the first wall body (111), and the second sub-wall portion (11222) is connected between the first sub-wall portion (11221) and the third sub-wall portion (11223).

6. The fan according to claim 5, characterized in that, The second wall (112) also has a stator slot bottom wall (1121), and the stator slot side wall (1122) is connected between the stator slot bottom wall (1121) and the first wall (111). The first wall (111), the second sub-wall (11222) and the stator slot bottom wall (1121) are parallel to each other. The distance between the stator slot bottom wall (1121) and the second sub-wall (11222) along the first direction is H1, and the distance between the stator slot bottom wall (1121) and the first wall (111) along the first direction is H2, satisfying the relationship: 0.7≤H1 / H2≤0.

8.

7. The fan according to any one of claims 1-6, characterized in that, The impeller (20) includes an impeller body (21) and a blade section (22). Along the first direction, the blade section (22) is located on the side of the impeller body (21) away from the mounting wall (11) and is fixed to the impeller body (21). The impeller body (21) and the blade section (22) together define an air inlet space (24). The blade section (22) includes a plurality of blades (221). The plurality of blades (221) are arranged in sequence at intervals along the circumference of the impeller body (21). The air inlet angle of the blades (221) is α1, and the air outlet angle of the blades (221) is α2, satisfying the relationship: 0.4≤α1 / α2≤0.

5.

8. The fan according to claim 7, characterized in that, The impeller body (21) has a second protrusion (211) protruding into the air inlet space (24) in the middle, so as to form a mounting groove (212) on the side of the impeller body (21) facing the mounting wall (11), and a portion of the mounting wall (11) is located in the mounting groove (212).

9. The fan according to claim 8, characterized in that, At least a portion of the stator slot (12) and / or at least a portion of the rotor slot (13) are located within the mounting slot (212).

10. The fan according to claim 8, characterized in that, The second protrusion (211) has a mounting groove sidewall (2121), a mounting groove bottom wall (2122), and a connecting wall (2123). The connecting wall (2123) is connected between the mounting groove sidewall (2121) and the mounting groove bottom wall (2122). The outer surface of the connecting wall (2123) is an arc-shaped surface.

11. The fan according to claim 10, characterized in that, The arc-shaped surface is a spherical surface, and the radius of the sphere containing the arc-shaped surface is R, satisfying the relationship: 1mm≤R≤1.4mm.

12. The fan according to claim 8, characterized in that, The rotor structure (30) includes a magnetic ring (31), which is located in the mounting groove (212) and fixed to the impeller body (21).

13. The fan according to claim 8, characterized in that, The rotor structure (30) includes a drive shaft (32), at least a portion of which is located within the rotor slot (13), and the drive shaft (32) is fixed to the impeller body (21).

14. The fan according to any one of claims 1-6, characterized in that, A wiring groove (113) is formed on the first side of the mounting wall (11), and the wiring groove (113) is connected to the stator groove (12).

15. A ventilation device, characterized in that, Includes the fan (1) according to any one of claims 1-14.

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