Embedded impeller combination

Abstract

The utility model relates to an embedded impeller combination, which comprises an impeller body and a magnetic sleeve, the cross section of the magnetic sleeve is U-shaped, the magnetic sleeve comprises a bottom wall and two side walls, the two side walls are bent outwards to form a bent part, a plurality of holes are arranged on the bent part, and the impeller body penetrates through the holes and wraps the bent part. According to the utility model, the embedding of the impeller body and the magnetic sleeve is realized by utilizing the hole in the bending part, and the forming contact area of the magnetic sleeve and the impeller body is greatly reduced on the premise of ensuring the connection firmness of the impeller body and the magnetic sleeve, so that the internal stress and the deformation of the impeller are reduced, and the perpendicularity and the unbalance amount of fan blades of the impeller are optimized; in addition, the whole magnetic sleeve does not need to be wrapped when the impeller is formed, so that the size of the air inlet is increased, and the fan has a better air cooling effect.

Description

Technical Field

[0001] The utility model relates to the technical field of air cooling equipment, in particular to a mosaic impeller combination. Background Art

[0002] When a centrifugal fan is running, the gas flow in the fan may be unbalanced due to factors such as blade bending, scaling, wear, molding, and asymmetric impeller installation angles. This will not only affect the performance of the fan, but also reduce the efficiency of the fan. Therefore, to improve the performance of the centrifugal fan, the impeller imbalance must be controlled.

[0003] The existing impeller structure is: the impeller is wrapped with a magnetic sleeve and formed in one piece, and the balancing is achieved by adding or reducing glue on the balancing machine. However, due to the inconsistent thermal expansion coefficients of the impeller (plastic) and the magnetic sleeve (metal), it is easy to cause internal stress in the final product, which in turn causes the product to deform or even break. Utility Model Content

[0004] The utility model provides a mosaic impeller combination to solve the above technical problems.

[0005] In order to solve the above technical problems, the utility model provides a mosaic impeller combination, including an impeller body and a magnetic sleeve, the cross-section of the magnetic sleeve is U-shaped, including a bottom wall and two side walls, the two side walls are bent outward to form a bending portion, a plurality of holes are provided on the bending portion, the impeller body passes through the holes and covers the bending portion.

[0006] Preferably, the bottom wall and two side walls of the magnetic sleeve are not connected to the impeller body.

[0007] Preferably, the impeller body is injection molded based on the bent portion of the magnetic sleeve.

[0008] Preferably, a center hole is provided at the center of the bottom wall of the magnetic sleeve, an axis core seat is installed in the center hole, and an axis core is connected to the magnetic sleeve through the axis core seat.

[0009] Preferably, the surface of the magnetic sleeve is provided with an electroplating layer.

[0010] Preferably, the holes are evenly distributed on the bending portion along the circumferential direction.

[0011] Preferably, the hole is circular.

[0012] Compared with the prior art, the embedded impeller assembly provided by the utility model has the following advantages:

[0013] 1. The utility model utilizes the holes on the bent portion to achieve the interlocking of the impeller body and the magnetic sleeve. On the premise of ensuring the firmness of the connection between the two, the forming contact area between the magnetic sleeve and the impeller body is greatly reduced, thereby reducing the internal stress and impeller deformation, and optimizing the verticality and imbalance of the impeller blades;

[0014] 2. In the utility model, since the impeller does not need to cover the entire magnetic sleeve when it is formed, the volume of the air inlet is increased, so that the fan has a better air cooling effect;

[0015] 3. The utility model also reduces the amount of material used in the molding of the impeller body, shortens the molding cycle, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the embedded impeller assembly in a specific embodiment of the utility model;

[0017] Figure 2 It is a cross-sectional view of a mosaic impeller assembly in a specific embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the magnetic sleeve in a specific implementation manner of the utility model.

[0019] In the figure: 10 - impeller body, 20 - magnetic sleeve, 21 - bottom wall, 22 - side wall, 23 - bending part, 24 - hole, 25 - center hole, 30 - shaft core, 31 - shaft core seat. DETAILED DESCRIPTION

[0020] In order to describe the technical solution of the above utility model in more detail, specific embodiments are listed below to demonstrate the technical effect; it should be emphasized that these embodiments are used to illustrate the utility model but not to limit the scope of the utility model.

[0021] The utility model provides a mosaic impeller assembly, such as Figures 1 to 3 As shown, it includes an impeller body 10 and a magnetic sleeve 20. The cross-section of the magnetic sleeve 20 is U-shaped, including a bottom wall 21 and two side walls 22. The two side walls 22 are bent outward to form a bending portion 23. The bending portion 23 is provided with a plurality of holes 24. The impeller body 10 passes through the holes 24 and covers the bending portion 23. The utility model utilizes the holes 24 on the bending portion 23 to achieve the interlocking of the impeller body 10 and the magnetic sleeve 20. On the premise of ensuring the firmness of the connection between the two, the molding contact area between the magnetic sleeve 20 and the impeller body 10 is greatly reduced, thereby reducing the internal stress and impeller deformation, so that the verticality and imbalance of the impeller blades are optimized; in addition, since the entire magnetic sleeve 20 does not need to be covered when the impeller is molded, the volume of the air inlet is increased, so that the fan has a better air cooling effect.

[0022] In some embodiments, the bottom wall 21 and two side walls 22 of the magnetic sleeve 20 are not connected to the impeller body 10, so that the inconsistent thermal expansion coefficients of the magnetic sleeve 20 and the impeller body 10 will not cause internal stress in the product or even cause deformation and rupture of the product.

[0023] In some embodiments, the impeller body 10 is injection molded based on the bent portion 23 of the magnetic sleeve 20. In other words, the bent portion 23 of the magnetic sleeve 20 can be used as a mold for injection molding of the impeller body 10, and the two can be embedded using the hole 24 on the bent portion 23, which not only satisfies the requirement of a firm connection between the two, but also reduces the amount of injection glue, shortens the molding cycle, and improves production efficiency.

[0024] In some embodiments, please refer to Figures 1 to 3 A center hole 25 is provided at the center of the bottom wall 21 of the magnetic sleeve 20, and a shaft core seat 31 is installed in the center hole 25. A shaft core 30 is connected to the magnetic sleeve 20 through the shaft core seat 31, and then the impeller is controlled to rotate by a motor.

[0025] In some embodiments, the surface of the magnetic sleeve 20 is provided with an electroplating layer, that is, the entire surface of the magnetic sleeve 20 is electroplated to prevent electrical conduction and ensure the safety of the fan.

[0026] In some embodiments, please refer to Figure 1 and Figure 3 The holes 24 are evenly distributed on the bending portion 23 along the circumferential direction to ensure that the impeller body 10 and the magnetic sleeve 20 are firmly connected.

[0027] In some embodiments, please refer to Figure 1 and Figure 3 The hole 24 is circular, which makes it easier for the material to flow and fill the hole 24 during injection molding.

[0028] In summary, the chimeric impeller assembly provided by the utility model includes an impeller body 10 and a magnetic sleeve 20. The cross-section of the magnetic sleeve 20 is U-shaped, including a bottom wall 21 and two side walls 22. The two side walls 22 are bent outward to form a bending portion 23. The bending portion 23 is provided with a plurality of holes 24. The impeller body 10 passes through the holes 24 and covers the bending portion 23. The utility model utilizes the holes 24 on the bending portion 23 to achieve the chimerical connection of the impeller body 10 and the magnetic sleeve 20. On the premise of ensuring the firmness of the connection between the two, the molding contact area between the magnetic sleeve 20 and the impeller body 10 is greatly reduced, thereby reducing the internal stress and impeller deformation, so that the verticality and imbalance of the impeller blades are optimized; in addition, since the entire magnetic sleeve 20 does not need to be covered when the impeller is molded, the volume of the air inlet is increased, so that the fan has a better air cooling effect.

[0029] Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A mosaic impeller assembly, characterized in that: It includes an impeller body and a magnetic sleeve. The cross-section of the magnetic sleeve is U-shaped, including a bottom wall and two side walls. The two side walls are bent outward to form a bending portion. The bending portion is provided with a plurality of holes. The impeller body passes through the holes and covers the bending portion.

2. The embedded impeller assembly according to claim 1, characterized in that: The bottom wall and two side walls of the magnetic sleeve are not connected to the impeller body.

3. The embedded impeller assembly according to claim 2, characterized in that: The impeller body is injection-molded based on the bent portion of the magnetic sleeve.

4. The embedded impeller assembly according to claim 1, characterized in that: A center hole is provided at the center of the bottom wall of the magnetic sleeve, an axis core seat is installed in the center hole, and an axis core is connected to the magnetic sleeve through the axis core seat.

5. The embedded impeller assembly according to claim 1, characterized in that: The surface of the magnetic sleeve is provided with an electroplating layer.

6. The embedded impeller assembly according to claim 1, characterized in that: The holes are evenly distributed on the bending portion along the circumferential direction.

7. The embedded impeller assembly according to claim 1, characterized in that: The hole is circular.

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