Flow guide structure and fan

Abstract

The utility model relates to the technical field of fans, and provides a flow guide structure and a fan. The flow guide structure comprises an inner ring and an outer ring. The inner ring is fixed with a shell of the motor; the outer ring is sleeved on the outer side of the blade and comprises a first flange, a second flange, a connecting bridge and a first reinforcing part, the second flange is sleeved outside the first flange, the first flange is connected with the inner ring through the flow deflector, the second flange is connected with the first flange through the connecting bridge, and the first reinforcing part is connected with the first flange, the second flange and the connecting bridge. In the axial projection of the rotor, the first reinforcing part is in a net shape, and a mounting hole is formed in the center of the first reinforcing part. In this way, the weight of the outer ring can be reduced, the structural strength of the outer ring can be enhanced, the deformation trend can be restrained, the structural strength of the mounting holes can be enhanced through the first reinforcing parts, and operation of a large-size and high-power fan is supported.

Description

Technical Field

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

[0002] Fans are commonly used to dissipate heat from a target object. A fan typically consists of a motor, blades, and a flow guide structure. The motor generally comprises a stator and a rotor. When the stator is energized, it generates a magnetic field, causing the rotor to rotate within this field. The rotor drives the blades to rotate, generating airflow. This airflow passes through the flow guide structure, reducing turbulence. The fan is generally connected to its support structure using fasteners, which pass through mounting holes on the outer ring of the flow guide structure and are then secured to the support structure.

[0003] As the demand for fan output power increases, the size and weight of the fans also increase. Since the entire weight of the fan is supported by fasteners, the fasteners exert a counterforce on the inner wall of the mounting hole, which can easily cause the inner wall of the mounting hole to expand, resulting in gaps between the fasteners and the inner wall of the mounting hole. When the fan starts, vibration is likely to occur, and these gaps make it difficult to maintain the relative stability between the fan and the support. Furthermore, high-power fans are more prone to vibration, and the frequency and amplitude of the vibration are greater, leading to more intense collisions between the fasteners and the inner wall of the mounting hole.

[0004] Therefore, there is an urgent need for a flow guiding structure and a fan to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to propose a flow guiding structure and a fan that can reduce the overall weight of the fan while maintaining its structural strength.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A flow guiding structure for a fan, the fan including a motor and blades, the blades being mounted on the rotor of the motor, the flow guiding structure comprising:

[0008] Inner ring, the inner ring being used to fix it to the housing of the motor;

[0009] The outer ring is sleeved on the outside of the blade. The outer ring includes a first flange, a second flange, a connecting bridge, and a first reinforcing part. The second flange is sleeved outside the first flange. The first flange is connected to the inner ring through a guide vane. The second flange is connected to the first flange through the connecting bridge. The first reinforcing part connects the first flange, the second flange, and the connecting bridge. In the axial projection of the rotor, the first reinforcing part is mesh-like and has a mounting hole formed at its center.

[0010] As a preferred technical solution of the above-mentioned flow guiding structure, the outer ring further includes a second reinforcing part, which connects the first baffle and the connecting bridge.

[0011] As a preferred technical solution of the above-mentioned flow guiding structure, the outer ring further includes a third reinforcing part, which connects the first baffle, the second baffle and the connecting bridge. The third reinforcing part is in the shape of a line when projected axially onto the rotor.

[0012] As a preferred technical solution of the above-mentioned flow guiding structure, it also includes a reinforcing ring, which is located between the outer ring and the inner ring. The reinforcing ring is coaxially arranged with the rotor of the motor and connects all the flow guiding plates.

[0013] As a preferred technical solution of the above-mentioned flow guiding structure, the inner ring includes a first side wall and a second side wall. The first side wall forms a ring shape and is sleeved on the outer peripheral wall of the motor housing. In the axial direction of the rotor, the second side wall is fixed to one end face of the first side wall. In the axial projection of the rotor, the second side wall partially overlaps with the motor housing.

[0014] As a preferred technical solution of the above-mentioned flow guiding structure, the inner ring further includes a plurality of first mounting seats, the first mounting seats being fixed to the first sidewall and / or the second sidewall, and the first mounting seats being connected to the housing of the motor by threaded fasteners.

[0015] As a preferred technical solution of the above-mentioned flow guiding structure, the housing of the motor is provided with a plurality of second mounting seats protruding on the periphery, and the plurality of second mounting seats correspond one-to-one with the plurality of first mounting seats. The inner sidewall of the inner ring is provided with a guide groove, and the second mounting seats can dock with the first mounting seats along the guide groove. The first mounting seats and the second mounting seats are connected by the threaded fasteners.

[0016] As a preferred technical solution of the above-mentioned flow guiding structure, the inner surface of the first sidewall is formed with a wave-shaped continuous curved surface, which is used to contact the peripheral sidewall of the motor housing.

[0017] As a preferred embodiment of the aforementioned flow guiding structure, the inner ring further includes a fourth reinforcing part, located on the side of the second sidewall facing away from the motor, and the fourth reinforcing part connects the first sidewall and the second sidewall.

[0018] A fan is also provided, including a motor, blades and the aforementioned airflow guiding structure, wherein the airflow guiding structure is fixed to the motor, the blades are mounted on the rotor of the motor, and the airflow generated by the rotation of the blades passes through the airflow guiding structure.

[0019] The beneficial effects of this utility model are:

[0020] A flow guiding structure and a fan are disclosed. The fan includes a motor and blades, with the blades mounted on the motor rotor. The flow guiding structure includes an inner ring and an outer ring. The inner ring is used to fix the fan to the motor housing. The outer ring is fitted around the outside of the blades and includes a first flange, a second flange, a connecting bridge, and a first reinforcing part. The second flange is fitted around the first flange. The first flange is connected to the inner ring via a flow guide plate, and the second flange is connected to the first flange via a connecting bridge. The first reinforcing part connects the first flange, the second flange, and the connecting bridge. Projected axially onto the rotor, the first reinforcing part is mesh-like and has a mounting hole at its center.

[0021] For example, the motor includes a housing, a stator, and a rotor. The stator is fixed inside the housing, and the rotor is inserted into the stator and can rotate relative to the housing. Blades are mounted on the output shaft of the rotor. When the rotor rotates, it can drive the blades to rotate and generate airflow. The airflow guiding structure is used to change or guide the airflow direction. The airflow guiding structure includes an inner ring, an outer ring, and guide vanes. The inner ring is used to fix it to the motor housing; the outer ring is fitted over the blades, that is, the maximum radius of the circular outline formed when the blades rotate is smaller than the inner diameter of the outer ring. The outer ring is used to isolate the blades and prevent the blades from colliding with other objects when rotating; the guide vanes are used to change the airflow direction.

[0022] Furthermore, the outer ring includes a first baffle, a second baffle, and a connecting bridge. The first baffle, the second baffle, and the connecting bridge form a U-shaped groove, which reduces the weight of the outer ring. A first reinforcing part is disposed in the U-shaped groove and is connected to the first baffle, the second baffle, and the connecting bridge. Thus, the first reinforcing part can strengthen the structural strength of the outer ring and suppress the deformation tendency. Moreover, the first reinforcing part is mesh-like, which can further reduce the weight of the outer ring. A mounting hole is provided at the center of the first reinforcing part. The outer ring is connected to other structures by fasteners inserted into the mounting hole, thereby realizing the installation of the fan and other structures. The first reinforcing part can also strengthen the structural strength at the mounting hole to support the operation of large-volume, high-power fans. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the flow guiding structure provided in an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0026] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle;

[0027] Figure 4 This is a partial enlarged view of the inner ring provided in an embodiment of this utility model.

[0028] In the picture:

[0029] 100. Motor; 200. Blade;

[0030] 300. Flow guiding structure;

[0031] 310. Inner ring; 311. First sidewall; 312. Second sidewall; 313. First mounting base; 314. Guide groove; 315. Continuous curved surface; 316. Fourth reinforcing part;

[0032] 320. Outer ring; 321. First retaining edge; 322. Second retaining edge; 323. Connecting bridge; 324. First reinforcing part; 325. Mounting hole; 326. Second reinforcing part; 327. Third reinforcing part;

[0033] 330, guide vane; 340, reinforcing ring. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] like Figures 1 to 4 As shown, the flow guiding structure 300 is used for a fan, which includes a motor 100 and blades 200. The blades 200 are mounted on the rotor of the motor 100. The flow guiding structure 300 includes an inner ring 310 and an outer ring 320. The inner ring 310 is used to fix it to the housing of the motor 100. The outer ring 320 is sleeved on the outside of the blades 200. The outer ring 320 includes a first baffle 321, a second baffle 322, a connecting bridge 323, and a first reinforcing part 324. The second baffle 322 is sleeved on the outside of the first baffle 321. The first baffle 321 is connected to the inner ring 310 through a flow guiding plate 330. The second baffle 322 is connected to the first baffle 321 through the connecting bridge 323. The first reinforcing part 324 connects the first baffle 321, the second baffle 322, and the connecting bridge 323. Projected axially onto the rotor, the first reinforcing part 324 is mesh-like and has a mounting hole 325 formed at its center.

[0039] For example, the motor 100 includes a housing, a stator, and a rotor. The stator is fixed inside the housing, and the rotor is inserted into the stator and can rotate relative to the housing. The blades 200 are mounted on the output shaft of the rotor. When the rotor rotates, it can drive the blades 200 to rotate and generate airflow. The flow guiding structure 300 is used to change or guide the flow direction of the airflow. The flow guiding structure 300 includes an inner ring 310, an outer ring 320, and a flow guide plate 330. The inner ring 310 is used to fix to the housing of the motor 100. The outer ring 320 is sleeved on the outside of the blades 200, that is, the maximum radius of the circular outline formed by the blades 200 when rotating is smaller than the inner diameter of the outer ring 320. The outer ring 320 is used to isolate the blades 200 and prevent the blades 200 from colliding with other objects when rotating. The flow guide plate 330 is used to change the flow direction of the airflow.

[0040] Furthermore, the outer ring 320 includes a first baffle 321, a second baffle 322, and a connecting bridge 323. The first baffle 321, the second baffle 322, and the connecting bridge 323 form a U-shaped groove, which reduces the weight of the outer ring 320. The first reinforcing part 324 is disposed in the U-shaped groove and is connected to the first baffle, the second baffle 322, and the connecting bridge 323. Thus, the first reinforcing part 324 can strengthen the structural strength of the outer ring 320 and suppress the deformation tendency. Moreover, the first reinforcing part 324 is mesh-like, which can further reduce the weight of the outer ring 320. A mounting hole 325 is provided at the center of the first reinforcing part 324. The outer ring 320 is connected to other structures by fasteners inserted into the mounting hole 325, thereby realizing the installation of the fan and other structures. The first reinforcing part 324 can also strengthen the structural strength at the mounting hole 325 to support the operation of large-volume, high-power fans.

[0041] It should be noted that, generally speaking, large-volume fans also have a large mass. The mass of such fans is entirely supported by fasteners. When the fasteners exert a reverse force on the inner wall of the mounting hole 325, it can easily cause the inner wall of the mounting hole 325 to expand, resulting in a gap between the fastener and the inner wall of the mounting hole 325. When the fan starts, it is easy for vibration to occur, and the appearance of the gap makes it difficult to maintain the relative stability of the fan and the structure connected to it.

[0042] It should be noted that, generally speaking, high-power fans are more prone to vibration, and the frequency and amplitude of the vibration are greater, which leads to more intense collisions between the fasteners and the inner wall of the mounting hole 325.

[0043] Optionally, the outer ring 320 further includes a second reinforcing portion 326, which connects the first retaining edge 321 and the connecting bridge 323. For example, the second reinforcing portion 326 extends axially from the first retaining edge 321 along the rotor axis, with one end extending to the end face of the first retaining edge 321 and the other end connected to the connecting bridge 323. This maintains the structural reliability of the first retaining edge 321 and the connecting bridge 323, suppressing deformation of the first retaining edge 321. Since the first retaining edge 321 is connected to the inner ring 310 via a guide vane 330, when the first retaining edge 321 maintains its original shape, deformation of the inner ring 310 can also be suppressed, thereby maintaining a stable connection between the inner ring 310 and the housing of the motor 100.

[0044] Optionally, the outer ring 320 also includes a third reinforcing part 327, which connects the first flange 321, the second flange 322 and the connecting bridge 323. In the axial projection of the rotor, the third reinforcing part 327 is in the shape of a straight line.

[0045] For example, the third reinforcing part 327 is plate-shaped and parallel to the axial direction of the rotor. One end face of the third reinforcing part 327 is connected to the first retaining edge 321, the other end face is connected to the second retaining edge 322, and the remaining end face is connected to the connecting bridge 323. That is, the third reinforcing part 327 is fixed to the connecting bridge 323 and sandwiched between the first retaining edge 321 and the second retaining edge 322, for maintaining the distance between the first retaining edge 321 and the second retaining edge 322, and for maintaining the connection between the first retaining edge 321 and the connecting bridge 323, as well as the connection between the second retaining edge 322 and the connecting bridge 323. Compared with the first reinforcing part 324, the third reinforcing part 327 occupies a relatively small area and is suitable for being disposed at a position where the distance between the first retaining edge 321 and the second retaining edge 322 is small.

[0046] Preferably, a first reinforcing part 324 and a third reinforcing part 327 are provided between the first retaining edge 321 and the second retaining edge 322. The first reinforcing part 324 is provided in the area where the gap between the first retaining edge 321 and the second retaining edge 322 is large, and the third reinforcing part 327 is provided in the area where the gap between the first retaining edge 321 and the second retaining edge 322 is small.

[0047] Optionally, the flow guiding structure 300 also includes a reinforcing ring 340, which is located between the outer ring 320 and the inner ring 310. The reinforcing ring 340 is coaxially arranged with the rotor of the motor 100 and connects all the flow guiding vanes 330. With this arrangement, when some of the multiple flow guiding vanes 330 tend to deform due to force, the reinforcing ring 340 can transfer the force to the other flow guiding vanes 330, thereby reducing the deformation tendency of the flow guiding vanes 330.

[0048] Optionally, the inner ring 310 includes a first sidewall 311 and a second sidewall 312. The first sidewall 311 forms a ring and is fitted onto the outer peripheral wall of the motor 100 housing. The second sidewall 312 is fixed to one end face of the first sidewall 311. Projected onto the axial side of the rotor, the second sidewall 312 partially overlaps with the housing of the motor 100.

[0049] For example, the first sidewall 311 is connected end to end around the rotor axis to form a cylindrical structure, i.e., its projection onto the rotor axis is annular. The second sidewall 312 is fixed to one end face of the first sidewall 311 to form the bottom end face of the cylindrical structure. When assembling the motor 100 and the inner ring 310, the motor 100 is inserted into the inner ring 310 along the rotor axis. The first sidewall 311 of the inner ring 310 fits against the outer peripheral wall of the motor 100 housing, and one end face of the motor 100 housing abuts against the second sidewall 312, which is considered as the motor 100 reaching the installation position. In this way, not only is it convenient to install the motor 100 and the flow guiding structure 300, but also, when the motor 100 starts, it is prone to vibration. The cylindrical structure formed by the first sidewall 311 and the second sidewall 312 makes the motor 100 and the inner ring 310 form a relatively tight connection, thereby reducing the amplitude of relative movement between the inner ring 310 and the motor 100.

[0050] Furthermore, in terms of the axial projection of the rotor, the second sidewall 312 coincides with a portion of the housing of the motor 100. In this way, the second sidewall 312 can keep a portion of the end face of the motor 100 external to facilitate heat dissipation from the motor 100.

[0051] Optionally, the inner ring 310 also includes a plurality of first mounting seats 313, which are fixed to the first sidewall 311 and / or the second sidewall 312, and are connected to the housing of the motor 100 by threaded fasteners.

[0052] Optionally, the housing of the motor 100 is provided with a plurality of second mounting seats protruding from the periphery, and the plurality of second mounting seats correspond one-to-one with a plurality of first mounting seats 313. The inner sidewall of the inner ring 310 is provided with a guide groove 314, and the second mounting seat can dock with the first mounting seat 313 along the guide groove 314. The first mounting seat 313 and the second mounting seat are connected by threaded fasteners.

[0053] With this configuration, when assembling the motor 100 and the inner ring 310, the second mounting seat is inserted into the guide groove 314, which can then dock with the corresponding first mounting seat 313, reducing the difficulty of calibration.

[0054] Optionally, the inner surface of the first sidewall 311 forms a wavy continuous curved surface 315, which is used to contact the peripheral sidewall of the housing of the motor 100.

[0055] With this configuration, by making the inner side of the first sidewall 311 wavy, the contact area between the first sidewall 311 and the housing of the motor 100 can be reduced, and the gap between the first sidewall 311 and the motor 100 can be circulated by airflow, which helps the motor 100 dissipate heat.

[0056] Optionally, the inner ring 310 also includes a fourth reinforcing part 316 on the side of the second sidewall 312 facing away from the motor 100, the fourth reinforcing part 316 connecting the first sidewall 311 and the second sidewall 312.

[0057] With this configuration, the fourth reinforcing part 316 can maintain the connection structure between the second sidewall 312 and the first sidewall 311.

[0058] A fan is also provided, including a motor 100, blades 200 and the aforementioned airflow guiding structure 300. The airflow guiding structure 300 is fixed to the motor 100, the blades 200 are mounted on the rotor of the motor 100, and the airflow generated by the rotation of the blades 200 passes through the airflow guiding structure 300.

[0059] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A flow guiding structure for a fan, said fan comprising an electric motor (100) and a blade (200) mounted to a rotor of said electric motor (100), characterized in that, The flow guide structure comprises: An inner ring (310) for fixing with the shell of the motor (100); An outer ring (320) sleeved outside the blade (200), the outer ring (320) comprises a first retaining edge (321), a second retaining edge (322), a connecting bridge (323) and a first reinforcing part (324), the second retaining edge (322) is sleeved outside the first retaining edge (321), the first retaining edge (321) is connected with the inner ring (310) through a flow guide fin (330), the second retaining edge (322) is connected with the first retaining edge (321) through the connecting bridge (323), the first reinforcing part (324) connects the first retaining edge (321), the second retaining edge (322) and the connecting bridge (323), in the axial projection of the rotor, the first reinforcing part (324) is in a mesh shape and forms a mounting hole (325) at the center of the first reinforcing part (324).

2. The flow guiding structure of claim 1, wherein, The outer ring (320) further comprises a second reinforcing part (326), the second reinforcing part (326) connects the first retaining edge (321) and the connecting bridge (323).

3. The flow guiding structure of claim 1, wherein, The outer ring (320) further comprises a third reinforcing part (327), the third reinforcing part (327) connects the first retaining edge (321), the second retaining edge (322) and the connecting bridge (323), in the axial projection of the rotor, the third reinforcing part (327) is in a linear shape.

4. The flow guide structure of claim 1, wherein, Further comprising a reinforcing ring (340) between the outer ring (320) and the inner ring (310), the reinforcing ring (340) is coaxially arranged with the rotor of the motor (100), the reinforcing ring (340) connects all the flow guide fins (330).

5. The flow guide structure of claim 1, wherein, The inner ring (310) comprises a first side wall (311) and a second side wall (312), the first side wall (311) is enclosed in a circular ring shape and sleeved on the outer peripheral wall of the shell of the motor (100), in the axial direction of the rotor, the second side wall (312) is fixed to one side end surface of the first side wall (311), in the axial projection of the rotor, the second side wall (312) partially coincides with the shell of the motor (100).

6. The flow guiding structure of claim 5, wherein, The inner ring (310) further comprises a plurality of first mounting seats (313), the first mounting seats (313) are fixed with the first side wall (311) and / or the second side wall (312), the first mounting seats (313) are connected with the shell of the motor (100) through threaded fasteners.

7. The flow guiding structure of claim 6, wherein, The shell of the motor (100) is convex on the circumferential side and provided with a plurality of second mounting seats, the plurality of second mounting seats correspond one-to-one with the plurality of first mounting seats (313), the inner side wall of the inner ring (310) is provided with a guide groove (314), the second mounting seat can be butt jointed with the first mounting seat (313) along the guide groove (314), the first mounting seat (313) and the second mounting seat are connected through the threaded fastener.

8. The flow guiding structure of claim 5, wherein, The inner side of the first side wall (311) forms a wavy continuous curved surface (315) for contacting with the circumferential side wall of the housing of the motor (100).

9. The flow guiding structure of claim 5, wherein, The inner ring (310) further comprises a fourth reinforcing part (316) connecting the first side wall (311) and the second side wall (312) on the side of the second side wall (312) facing away from the motor (100).

10. A fan characterised by A wind turbine comprising a motor (100), a blade (200) and a flow guide structure (300) according to any one of claims 1-9, the flow guide structure (300) being fixed to the motor (100), the blade (200) being mounted to a rotor of the motor (100), the airflow generated by the rotation of the blade (200) passing through the flow guide structure (300).

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