Fan wheel and fluid driving part with same

Abstract

The utility model discloses a fan wheel and a fluid driving piece with the fan wheel, which are used for solving the problem of contact between a magnet and non-conductive liquid. Comprising a fan wheel body, the fan wheel body is provided with a hub, a plurality of fan blades are arranged around the hub, the fan wheel body is provided with a permanent magnet, the permanent magnet is combined with the hub, and the permanent magnet is provided with an exposed part which is not in contact with the hub; and the isolating film at least covers the exposed part of the permanent magnet. Therefore, the non-conductive liquid can maintain better quality and efficacy.

Description

Technical Field

[0001] The utility model relates to a fluid driving device, in particular to a fan wheel and a fluid driving component having the fan wheel. Background Art

[0002] The immersion cooling system immerses the electrical unit (such as a server or computer motherboard) in a non-conductive liquid so that the high-temperature heat energy generated by the electrical unit when it is working can be directly absorbed by the non-conductive liquid, allowing the electrical unit to maintain an appropriate operating temperature to achieve the expected working efficiency and service life.

[0003] Furthermore, the immersion cooling system drives the flow of the non-conductive liquid through a fluid driving member, and the fluid driving member has a stator and a fan wheel, the stator has, for example, a coil, and the fan wheel may have a magnet arranged around the coil, and the fan wheel rotates around the stator so that the flow of the non-conductive liquid is driven by the blades on the fan wheel. However, when the fan wheel is immersed in the non-conductive liquid for a long time, especially when the magnet of the fan wheel is in contact with the non-conductive liquid for a long time, the magnet will produce unexpected dissolution. That is, the substances dissolved by the magnet will cause the properties of the non-conductive liquid to change, resulting in a decrease in the thermal conductivity performance of the non-conductive liquid. In addition, the substances dissolved by the magnet will also cause the non-conductive liquid to have changes in appearance such as yellowing, thereby affecting the quality of the non-conductive liquid.

[0004] In view of this, the impeller of the fluid drive component still needs to be improved. Utility Model Content

[0005] In order to solve the above problems, the purpose of the utility model is to provide a fan wheel and a fluid driving member having the fan wheel, so that the magnet in the fan wheel will not come into contact with the non-conductive liquid.

[0006] The directions or their approximate terms described throughout the present invention, such as "front", "rear", "left", "right", "upper (top)", "lower (bottom)", "inside", "outside", "side", etc., mainly refer to the directions of the accompanying drawings, and each direction or its approximate terms are only used to assist in the explanation and understanding of the various embodiments of the present invention, and are not used to limit the present invention.

[0007] The quantifiers “a” or “an” used in the elements and components described throughout the present invention are only for convenience of use and to provide a general meaning of the scope of the present invention; in the present invention, they should be interpreted as including one or at least one, and a single concept also includes multiple situations, unless it is obvious that it means otherwise.

[0008] The similar terms such as "combination", "assembly" or "assembly" mentioned throughout the present invention mainly include the connection that can be separated without damaging the components, or the connection that makes the components inseparable. Those skilled in the art can choose according to the materials of the components to be connected or the assembly requirements.

[0009] The impeller of the utility model comprises: a impeller body having a hub, a plurality of impeller blades arranged around the hub, the impeller body having a permanent magnet, the permanent magnet being combined with the hub so that the permanent magnet has an exposed portion that is not in contact with the hub; and an insulating film at least covering the exposed portion of the permanent magnet.

[0010] Therefore, the impeller of the utility model at least covers the exposed surface of the permanent magnet through the insulating film. When the impeller is immersed in non-conductive liquid, the insulating film can form a barrier between the permanent magnet and the non-conductive liquid, thereby preventing the non-conductive liquid from contacting and reacting with the permanent magnet, thereby preventing the permanent magnet from dissolving unexpected substances in the non-conductive liquid, thereby achieving the effect of maintaining a better quality of the non-conductive liquid.

[0011] The permanent magnet has an outer circumference and an inner circumference, the outer circumference and the inner circumference are respectively located at two opposite sides of the permanent magnet in the radial direction, the permanent magnet has an upper end face and a lower end face, the upper end face and the lower end face are respectively located at two opposite ends of the permanent magnet in the axial direction, and the outer circumference of the permanent magnet is combined with the hub. In this way, the permanent magnet is positioned on the hub.

[0012] The upper end surface of the permanent magnet is combined with the hub, so that the upper end surface of the permanent magnet will not be exposed, which has the effect of reducing the exposed area of ​​the permanent magnet.

[0013] The insulating film at least covers the inner peripheral surface, the upper end surface and the lower end surface of the permanent magnet, so that the insulating film has the effect of blocking the permanent magnet from the non-conductive liquid, so that the permanent magnet and the non-conductive liquid will not contact each other.

[0014] The insulating film at least covers the inner peripheral surface and the lower end surface of the permanent magnet, so that the insulating film has the effect of blocking the permanent magnet from the non-conductive liquid, so that the permanent magnet and the non-conductive liquid will not contact each other.

[0015] The insulating film covers the entire surface of the permanent magnet, thus further ensuring that the permanent magnet will not come into contact with the non-conductive liquid.

[0016] The insulating film covers the surface of the impeller body, so that the insulating film has the effect of blocking the permanent magnet and the non-conductive liquid, so that the permanent magnet and the non-conductive liquid will not contact each other.

[0017] The hub has a rotating shaft, and the insulating film does not cover the surface of the rotating shaft. Thus, the insulating film will not be present on the surface of the rotating shaft, thereby avoiding affecting the smoothness of the rotating shaft in the bearing.

[0018] The hub has a shaft-connecting protrusion, the shaft is connected to the shaft-connecting protrusion, and the isolation film does not cover the shaft-connecting protrusion. In this way, the shaft-connecting protrusion and the shaft will not have the isolation film, which can avoid affecting the smooth rotation of the shaft in the bearing.

[0019] The fluid driving member of the utility model comprises: a frame having a shaft tube; a stator located at the outer periphery of the shaft tube; and the above-mentioned impeller, which is rotatably arranged on the shaft tube. In this way, the permanent magnet will not dissolve unexpected substances in the non-conductive liquid, and the non-conductive liquid can have a better quality effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 : An exploded perspective view of the fluid driving component of the utility model;

[0021] Figure 2 : A cross-sectional view of the first embodiment of the utility model;

[0022] Figure 3 : A cross-sectional view of another fan wheel of the first embodiment of the utility model;

[0023] Figure 4 : A cross-sectional view of the second embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1: Fan wheel body

[0026] 11: Wheel Hub

[0027] 12: Axis

[0028] 13: Top Plate

[0029] 14: Ring Wall

[0030] 15: Shaft connection convex part

[0031] 16: Fan Blades

[0032] 17: Connection

[0033] 18: Permanent magnet

[0034] 18a: Outer surface

[0035] 18b: Inner Surface

[0036] 18c: Upper end surface

[0037] 18d: Lower end surface

[0038] 2: Isolation film

[0039] P: Fan wheel

[0040] S: Storage space

[0041] K: Fluid drive

[0042] K1: Frame

[0043] K2: Axle tube

[0044] K3: Stator. DETAILED DESCRIPTION

[0045] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the preferred embodiments of the present invention are specifically cited below and described in detail with reference to the accompanying drawings; in addition, those marked with the same symbols in different drawings are regarded as the same and their descriptions are omitted.

[0046] Please refer to Figure 1 , Figure 2 As shown, it is a preferred embodiment of the impeller P of the utility model, including a impeller body 1 and an insulating film 2, and the insulating film 2 at least covers a portion of the surface of the impeller body 1.

[0047] The impeller body 1 has a hub 11, and a rotating shaft 12 is provided at the geometric center of the hub 11. For example, the hub 11 can be coupled to the rotating shaft 12 by injection coating, or by tight fit or laser welding. In the present embodiment, the hub 11 has a top plate 13 and an annular wall 14, one end of the annular wall 14 is connected to the periphery of the top plate 13, and the other end of the annular wall 14 extending axially is a free end not connected to the top plate 13. The top plate 13 and the annular wall 14 can jointly form a receiving space S. Preferably, the top plate 13 can have an axle connection protrusion 15, and the axle connection protrusion 15 protrudes from the inner surface of the top plate 13, so that the axle connection protrusion 15 can be located in the receiving space S. The shaft-connecting protrusion 15 can be used to connect with the rotating shaft 12 to increase the contact area between the top plate 13 and the rotating shaft 12 , thereby making the top plate 13 and the rotating shaft 12 more firmly connected.

[0048] Please refer to Figure 2 , Figure 3 As shown, the impeller body 1 has a plurality of blades 16, and the plurality of blades 16 are connected to the ring wall 14 so that the plurality of blades 16 are disposed around the hub 11. For example, the plurality of blades 16 can be disposed around the hub 11 through a connecting portion 17, and the connecting portion 17 can be combined with the hub 11 by injection molding, and the plurality of blades 16 are molded together when the connecting portion 17 is injection molded (e.g., Figure 2 In another embodiment, the hub 11 may not be combined with the shaft 12, and the shaft 12 and the plurality of blades 16 may be combined together during the injection molding of the connecting portion 17 (eg Figure 3 In another embodiment, the plurality of blades 16 may be made of metal, and the connecting portion 17 may cover one end of each blade 16 when being combined with the annular wall 14 by injection molding.

[0049] The impeller body 1 has a permanent magnet 18. The present invention does not limit the combination method of the permanent magnet 18 and the hub 11. In the present embodiment, the permanent magnet 18 can be combined with the hub 11 by gluing, so that the permanent magnet 18 is located in the accommodating space S. The number of the permanent magnets 18 can be several, and the several permanent magnets 18 can be arranged equidistantly and surrounded on the inner wall of the ring wall 14, or the permanent magnet 18 can be an annular magnet, so as to be arranged around the accommodating space S. In the present embodiment, the permanent magnet 18 is described as an annular magnet as an example. The permanent magnet 18 can be combined with the hub 11. Further, the permanent magnet 18 can have an outer peripheral surface 18a and an inner peripheral surface 18b, and the outer peripheral surface 18a and the inner peripheral surface 18b are respectively located on opposite sides of the permanent magnet 18 in the radial direction. The permanent magnet 18 can be combined with the inner wall of the ring wall 14 through the outer peripheral surface 18a, so that the inner peripheral surface 18b faces the rotating shaft 12. Furthermore, the permanent magnet 18 may have an upper end surface 18c and a lower end surface 18d, and the upper end surface 18c and the lower end surface 18d are respectively located at opposite ends of the axial direction of the permanent magnet 18. The permanent magnet 18 may be coupled to the hub 11 via the upper end surface 18c and the outer peripheral surface 18a.

[0050] Thus, the impeller P can be used for a fluid driving member K, and the fluid driving member K can be used to drive the flow of fluid. For example, in an immersion cooling system, the fluid driving member K can be used to drive the flow of non-conductive liquid, or, in other use cases, the fluid driving member K can be used to drive airflow. The fluid driving member K can have a frame K1, and the frame K1 has a shaft tube K2. A stator K3 is arranged on the outer periphery of the shaft tube K2. The impeller P is rotatably arranged on the shaft tube K2 so that the stator K3 is located in the accommodating space S. The impeller P is driven to rotate by the stator K3 to drive the non-conductive liquid to flow.

[0051] The isolation film 2 can be formed of a polymer material with heat resistance and chemical stability. For example, the material of the isolation film 2 can be a polymer such as polypropylene (PP) and polyethylene (PE). In the present embodiment, the isolation film 2 is formed of poly-p-xylylene, so that the isolation film 2 has properties such as low friction coefficient, acid and alkali resistance and high tension. Furthermore, when the permanent magnet 18 is combined with the hub 11, the permanent magnet 18 will form an exposed portion that is not in contact with the hub 11. When the impeller P is located in a non-conductive liquid, the above-mentioned exposed portion of the permanent magnet 18 will come into contact with the non-conductive liquid. Therefore, the isolation film 2 at least covers the above-mentioned exposed portion of the permanent magnet 18 to isolate the permanent magnet 18 from contact with the non-conductive liquid.

[0052] For example, when the outer circumferential surface 18a of the permanent magnet 18 is coupled to the inner wall of the ring wall 14, the inner circumferential surface 18b, the upper end surface 18c and the lower end surface 18d of the permanent magnet 18 are respectively exposed and come into contact with the non-conductive liquid. At this time, the insulating film 2 preferably covers the inner circumferential surface 18b, the upper end surface 18c and the lower end surface 18d of the permanent magnet 18 to isolate the permanent magnet 18 from the non-conductive liquid. In another embodiment, when the permanent magnet 18 is coupled to the hub 11 via the outer circumferential surface 18a and the upper end surface 18c, the insulating film 2 preferably covers the inner circumferential surface 18b and the lower end surface 18d of the permanent magnet 18 (such as Figure 2 In another embodiment, the outer circumferential surface 18a of the permanent magnet 18 is partially coupled to the hub 11, and the upper end surface 18c is partially coupled to the hub 11, so that the outer circumferential surface 18a and the upper end surface 18c are partially exposed. In addition to covering the inner circumferential surface 18b and the lower end surface 18d of the permanent magnet 18, the insulating film 2 may further cover the partially exposed portion of the outer circumferential surface 18a, and the insulating film 2 may further cover the partially exposed portion of the upper end surface 18c (e.g., Figure 3 ).

[0053] Continued reference Figure 2As shown, for example, before the permanent magnet 18 is combined with the hub 11, the permanent magnet 18 can be coated with a suitable coating material by sputtering or evaporation in a vacuum environment using physical vapor deposition (PVD), and the insulating film 2 is formed on the surface of the permanent magnet 18 in advance. At this time, the insulating film 2 covers the entire surface of the permanent magnet 18. Taking this embodiment as an example, the insulating film 2 can cover the outer peripheral surface 18a, the inner peripheral surface 18b, the upper end surface 18c and the lower end surface 18d of the permanent magnet 18. In this way, when the impeller P is immersed in a non-conductive liquid, the permanent magnet 18 can be separated from the non-conductive liquid by the insulating film 2, which can prevent the permanent magnet 18 from contacting with the non-conductive liquid and reacting, and further prevent the permanent magnet 18 from dissolving unexpected substances.

[0054] Continued reference Figure 3 As shown, it is the second embodiment of the impeller P of the utility model. This embodiment is roughly the same as the first embodiment mentioned above. In this embodiment, the permanent magnet 18 can be combined with the hub 11, and then the insulating film 2 is formed on the surface of the impeller body 1. Furthermore, the impeller body 1 can be coated by physical vapor deposition in a vacuum environment. At this time, the insulating film 2 can cover the several blades 16 and the connecting portion 17 on the outside of the impeller body 1, and the insulating film 2 can cover the hub 11 on the inside of the impeller body 1 (that is, the accommodating space S) and the inner circumferential surface 18b and the lower end surface 18d of the permanent magnet 18. Further, the impeller body 1 is isolated from the non-conductive liquid. In addition to preventing the non-conductive liquid from contacting the permanent magnet 18, the risk of the impeller body 1 reacting with the non-conductive liquid can be reduced, and the non-conductive liquid can be ensured not to deteriorate. Preferably, a masking material such as a masking tape can be used to mask the shaft 12 in advance. Specifically, the masking material can be used to cover the exposed surface of the shaft 12. Furthermore, the masking material can cover the shaft connection protrusion 15, and then the impeller body 1 is plated. In this way, the insulating film 2 can be prevented from being formed on the surface of the shaft 12, and the smoothness of the rotation of the shaft 12 in the bearing will not be affected.

[0055] In summary, the impeller of the utility model covers at least the exposed surface of the permanent magnet through the insulating film. When the impeller is immersed in a non-conductive liquid, the permanent magnet and the non-conductive liquid can be separated, thereby preventing the permanent magnet from contacting and reacting with the non-conductive liquid, and further preventing the permanent magnet from dissolving unexpected substances in the non-conductive liquid, thereby making the non-conductive liquid have a better quality effect.

[0056] Although the utility model has been disclosed using the above preferred embodiments, it is not intended to limit the utility model. Any person skilled in the art can make various changes and modifications to the above embodiments without departing from the spirit and scope of the utility model, which still fall within the technical scope protected by the utility model. Therefore, the protection scope of the utility model shall include all changes within the meaning and equivalent scope of the claims attached above. In addition, when the above several embodiments can be combined, the utility model includes any combination of implementations.

Claims

1. A fan wheel, characterized in that: include: A fan wheel body has a hub, a plurality of fan blades are arranged around the hub, and the fan wheel body has a permanent magnet, which is combined with the hub so that the permanent magnet has an exposed portion that is not in contact with the hub; and An insulating film covers at least the exposed portion of the permanent magnet.

2. The impeller according to claim 1, characterized in that: The permanent magnet has an outer circumferential surface and an inner circumferential surface, and the outer circumferential surface and the inner circumferential surface are respectively located on opposite sides of the permanent magnet in the radial direction. The permanent magnet has an upper end surface and a lower end surface, and the upper end surface and the lower end surface are respectively located on opposite ends of the permanent magnet in the axial direction. The outer circumferential surface of the permanent magnet is combined with the hub.

3. The impeller according to claim 2, characterized in that: The upper end surface of the permanent magnet is combined with the hub.

4. The impeller according to claim 2, characterized in that: The insulating film at least covers the inner peripheral surface, the upper end surface and the lower end surface of the permanent magnet.

5. The impeller according to claim 3, characterized in that: The insulating film at least covers the inner peripheral surface and the lower end surface of the permanent magnet.

6. The impeller according to claim 1, characterized in that: The insulating film covers the entire surface of the permanent magnet.

7. The impeller according to claim 1, characterized in that: The insulating film covers the surface of the impeller body.

8. The impeller according to claim 1, characterized in that: The wheel hub has a rotating shaft, and the insulating film does not cover the surface of the rotating shaft.

9. The impeller according to claim 8, characterized in that: The wheel hub has an axle connection protrusion, the rotating shaft is connected to the axle connection protrusion, and the isolation film does not cover the axle connection protrusion.

10. A fluid driving member, characterized in that: include: A frame having an axle tube; a stator located at the outer periphery of the shaft tube; And the impeller as described in any one of claims 1 to 9, the impeller is rotatably arranged on the shaft tube.

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