Fan frame and cooling fan

Abstract

A fan frame is disclosed to address the problem of poor airflow guidance in existing fan frames. It includes: a frame; a base having a shaft joint connected to the frame via a plurality of connectors; and a plurality of airflow guides, each airflow guide having a wing portion connected to the connector via at least one connecting portion. The plurality of airflow guides are located on the airflow channel of the frame. This invention also relates to a cooling fan with this fan frame. This can achieve the effect of increasing air pressure and airflow.

Description

Technical Field

[0001] This utility model relates to a cooling fan frame structure, and more particularly to a fan frame and cooling fan of an axial flow cooling fan. Background Technology

[0002] Existing fan frames have an outer frame containing a fan wheel support. A fan wheel can be attached to this support, allowing the fan wheel to rotate within the outer frame and thus drive airflow axially in and out. Several stationary blades are connected between the fan wheel support and the outer frame, arranged radially around the fan wheel. These blades guide the airflow generated by the fan wheel's rotation, thereby increasing the airflow pressure. However, the existing fan frames still have poor airflow guidance efficiency, making it difficult to improve heat dissipation.

[0003] In view of this, the existing sector frame does indeed still need to be improved. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide a fan frame and a cooling fan that can improve heat dissipation.

[0005] The directional terms or similar terms used throughout this utility model, such as "front", "back", "left", "right", "top", "bottom", "inner", "outer", "side", etc., are mainly for reference to the directions in the accompanying drawings. Each directional term or similar term is only used to assist in explaining and understanding the various embodiments of this utility model and is not intended to limit this utility model.

[0006] The use of the quantifiers “a” or “an” for the elements and components described throughout this utility model is merely for convenience and to provide the general meaning of the scope of this utility model; in this utility model, it should be interpreted as including one or at least one, and a single concept also includes multiple cases, unless it clearly means otherwise.

[0007] The terms “first,” “second,” … and “Nth” used throughout this utility model are mainly used to distinguish different elements or features (such as elements, directions, or steps), and do not indicate the maximum or minimum number of these elements or features possessed by a corresponding subject or method, nor do they limit the order of priority.

[0008] The terms "combination," "integration," or "assembly" used throughout this utility model mainly include those that allow for separation without damaging the components after connection, or those that make the components inseparable after connection. Those skilled in the art can choose the appropriate term based on the material of the components to be connected or the assembly requirements.

[0009] The fan frame of this utility model includes: a frame body; a base body having a shaft connection portion, the shaft connection portion being connected to the frame body via a plurality of connectors; and a plurality of air guides, each air guide having a wing portion, the wing portion being connected to the connector via at least one connection portion, the plurality of air guides being located on the airflow channel of the frame body.

[0010] Therefore, the fan frame of this utility model has a shaft connection part in the base body. The shaft connection part is radially connected to the frame body through several connecting members. The several connecting members are combined with several guide members, so that the several guide members are located on the airflow channel of the frame body. When the airflow passes through the several guide members, the eddy phenomenon of the airflow can be reduced and the airflow field can be made more stable, thereby improving the efficiency of airflow and achieving the effect of increasing wind pressure and flow rate.

[0011] Among them, the connecting parts are several stationary blades. In this way, the stationary blades can guide the airflow passing through the fan frame.

[0012] The cross-sectional shape of the wing portion is the same as that of the connector. In this way, the wing portion can form a better synergistic airflow guiding effect with the stator blade of the connector.

[0013] Each wing extends along the direction of the connecting member. Thus, the wing can be positioned within the airflow channel of the fan frame via the connecting member, thereby improving airflow efficiency.

[0014] Each wing is connected to a connector via a first connecting portion and a second connecting portion. The first connecting portion forms a first gap between the wing and the connector, and the second connecting portion forms a second gap between the wing and the connector. The first gap and the second gap are both at least 0.9 mm. In this way, each wing and each connector can have an appropriate spacing.

[0015] The ratio of the first spacing to the second spacing is 0.7 to 3. Thus, each wing can increase wind pressure and airflow through this ratio.

[0016] Each wing has a first radial end and a second radial end, and the extension length of each wing from the first radial end to the second radial end is 0.1 to 0.9 times the length of the connector. In this way, each wing can have an appropriate extension length to enhance wind pressure and flow rate.

[0017] Each wing has an inner edge and an outer edge. A first linear distance is formed between the first radial end and the second radial end at the outer edge. Each connector has a connector side edge adjacent to each wing. A second linear distance is formed between the connector side edge and the shaft connection. The ratio of the first linear distance to the second linear distance is 0.1 to 0.9. Thus, each wing can increase wind pressure and airflow through this ratio.

[0018] Each connector has a top edge and a bottom edge in the axial direction, with a first minimum axial height between the top edge and the bottom edge. Each wing has an inner edge and an outer edge, with a second minimum axial height between the inner edge and the outer edge. The second minimum axial height is greater than or equal to half of the first minimum axial height, and is also less than or equal to the first minimum axial height. Thus, each wing can increase wind pressure and airflow through the second minimum axial height.

[0019] The cooling fan of this utility model includes: the aforementioned fan frame; and a fan wheel, which is rotatably located at the shaft joint. Thus, when the fan wheel rotates and drives airflow through the plurality of guide members, it can reduce airflow turbulence and make the airflow field more stable, thereby improving airflow efficiency and achieving the effect of increasing wind pressure and flow rate. Attached Figure Description

[0020] Figure 1 : Front view of the first embodiment of this utility model; Figure 2 :like Figure 1 An enlarged view of point A shown; Figure 3 :like Figure 2 The side view shown is from perspective B. Figure 4 : An exploded perspective view of the cooling fan of this utility model.

[0021] Explanation of reference numerals in the attached figures: 1: Frame 11: The Right Moment in the Trend 2: Base body 21: Shaft joint 21a: Base 21b: Circumferential wall 21c: Container 22: Connector 22a: Side edge of connector 221: Top edge 222: Bottom edge 23: Cable Management 24: Shaft tube 3: Airflow guide 31: Wings 31a: Windward side 32: Connecting part 321: First connecting part 322: Second connecting part 33: First radial end 34: Second radial end 35: Inner edge 36: Outer edge F: Sector P: Fan wheel P1: Fan blades O: Axis S: Airflow channel D1: First spacing D2: Second spacing L1: First straight-line distance L2: Second straight-line distance H1: First minimum axial height H2: Second minimum axial height N: Cooling fan. Detailed Implementation

[0022] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments of this utility model are described below in detail with reference to the accompanying drawings; in addition, those symbols that are marked with the same symbols in different drawings are considered to be the same and their descriptions will be omitted.

[0023] Please refer to Figure 1 As shown, it is a preferred embodiment of the fan frame F of the present invention, including a frame 1, a base 2 and several guide members 3. The base 2 is combined with the frame 1, and the several guide members 3 are located on the airflow channel of the frame 1.

[0024] Please refer to Figure 1 , Figure 4 As shown, the frame 1 can be an axial flow fan frame. This invention does not limit the shape of the frame 1; for example, the frame 1 can be a rectangular frame or a circular frame. The frame 1 is used to assemble a fan wheel P to form a cooling fan N (e.g., ...). Figure 4As shown), the fan wheel P can have several fan blades P1 to drive airflow through the frame 1. Furthermore, the frame 1 can have a shaft O at the rotation axis of the fan wheel P, and two axially opposite air inlets 11 at the shaft O. These two air inlets 11 can be an air inlet and an air outlet respectively, depending on the rotation direction of the fan wheel P. The direction from the air inlet to the air outlet of the two air inlets 11 can be the axial direction of the fan frame, and an airflow channel S can be formed between the two air inlets 11.

[0025] The base 2 may have a shaft connection 21, which is located at the geometric center of the two air vents 11. Furthermore, the base 2 may have several connectors 22, each of which is radially connected to the shaft connection 21 and the frame 1, such that each connector 22 is located in the airflow channel S. The connectors 22 and the shaft connection 21 may be adjacent to one of the air vents 11, or they may be located between the two air vents 11. Additionally, the connectors 22 may be several ribs or stator blades. Each connector 22 may be radially arranged around the shaft connection 21 in a straight line, or it may be arc-shaped and spiral around the shaft connection 21, so that each connector 22 can guide airflow.

[0026] The shaft connection 21 may have a base 21a, and an annular wall 21b may be attached to the base 21a. The base 21a and the annular wall 21b may together form a receiving groove 21c, which can be used to accommodate the stator and circuit board, etc., to drive the fan wheel P to rotate. Preferably, the annular wall 21b may have a cable management port 23, which can communicate with the receiving groove 21c to allow wires to extend out. The shaft connection 21 may have a shaft tube 24, which may be located on the base 21a and may extend along the axial direction. The shaft tube 24 can be used to accommodate the bearing and the rotating shaft of the fan wheel P, so that the fan wheel P is rotatably located in the frame 1.

[0027] Please refer to Figure 2 As shown, the plurality of guide members 3 can be respectively combined with the plurality of connectors 22, so that the plurality of guide members 3 can be located in the airflow channel S. In detail, each guide member 3 can have a wing 31, each wing 31 can extend along the extension direction of each connector 22, each wing 31 can have a windward surface 31a, the windward surface 31a can face the flow direction of the airflow, and each guide member 3 can have at least one connecting part 32, the wing 31 can be connected to the connector 22 through the at least one connecting part 32, so that the wing 31 is not connected to the frame 1 and the shaft connection 21.

[0028] The at least one connecting portion 32 can be at least one rod, allowing a gap between each wing 31 and each connecting member 22. Thus, when airflow passes through each wing 31 along the axial direction, it can increase wind pressure. In this embodiment, each connecting member 22 can be a stationary blade, and the cross-sectional shape of the wing 31 can be the same as the cross-sectional shape of the connecting member 22, so that the wing 31 and the stationary blade of the connecting member 22 can form a better synergistic airflow guiding effect. Furthermore, the connecting member 22 adjacent to the cable management opening 23 may not have the wing 31, allowing the cable to extend smoothly from the cable management opening 23 and enabling the cable to be fixed to the connecting member 22 for easy collection and organization.

[0029] In this embodiment, each wing 31 is connected to each connector 22 via a first connecting portion 321 and a second connecting portion 322. The first connecting portion 321 is adjacent to the shaft connection portion 21, and the second connecting portion 322 is adjacent to the frame 1. A first gap D1 can be formed between the first connecting portion 321 and the connector 22, and a second gap D2 can be formed between the second connecting portion 322 and the wing 31. The first gap D1 and the second gap D2 are at least 0.9 mm, and the ratio of the first gap D1 to the second gap D2 (D1 / D2) can be 0.7 to 3. In this way, the wing 31 and the connector 22 can form an appropriate gap to enhance wind pressure.

[0030] Please continue reading. Figure 1 , Figure 2 As shown, each wing 31 may have a first radial end 33 and a second radial end 34, the first radial end 33 being adjacent to the shaft connection 21 and the second radial end 34 being adjacent to the frame 1. The extension length of each wing 31 from the first radial end 33 to the second radial end 34 may be 0.1 to 0.9 times the length of the connector 22 from the shaft connection 21 to the frame 1. In this way, each wing 31 can have an appropriate length to enhance wind pressure.

[0031] In this embodiment, each wing 31 may have an inner edge 35 and an outer edge 36 opposite to each other. The inner edge 35 is adjacent to the connector 22, and the outer edge 36 is away from the connector 22. The first radial end 33 to the second radial end 34 may form a first straight distance L1 at the outer edge 36. The connector 22 adjacent to the wing 31 may have a connector side edge 22a. The connector side edge 22a may form a second straight distance L2 between the frame 1 and the shaft connection 21. The ratio of the first straight distance L1 to the second straight distance L2 (L1 / L2) may be 0.1 to 0.9.

[0032] Please refer to Figure 3As shown, each connector 22 has a top edge 221 and a bottom edge 222 along the axial direction. The bottom edge 222 can be aligned axially with the outer edge 36 of each wing 31. A first minimum axial height H1 can be present between the top edge 221 and the bottom edge 222, and a second minimum axial height H2 can be present between the inner edge 35 and the outer edge 36 of the wing 31, wherein 1 / 2H1≤H2≤H1. Thus, each wing 31 can have an appropriate axial height to enhance wind pressure.

[0033] In summary, the fan frame and cooling fan of this utility model have a shaft connection part in the base, which is radially connected to the frame body by several connecting members. These connecting members are combined with several air guides, which are located on the airflow channel of the frame body. When the airflow passes through these air guides, the turbulence phenomenon of the airflow can be reduced, and the airflow field can be made more stable, thereby improving the efficiency of airflow and achieving the effect of increasing wind pressure and flow rate.

[0034] Although the present invention has been disclosed using the above preferred embodiments, it is not intended to limit the present invention. Any modifications and alterations made by those skilled in the art to the above embodiments without departing from the spirit and scope of the present invention shall still fall within the technical scope protected by the present invention. Therefore, the protection scope of the present invention shall include all changes within the meaning and equivalent scope of the appended claims.

Claims

1. A fan frame, characterized by, include: A frame; A base having a shaft connection portion connected to the frame via several connectors; and Several air guides, each having a wing, are connected to the connecting member via at least one connecting part. The air guides are located on the airflow channel of the frame.

2. The fan frame of claim 1, wherein, The shaft connection has a base, and a ring wall is attached to the base. The base and the ring wall together form a receiving groove. The ring wall has a cable management port. The connector adjacent to the cable management port does not have the flow guide.

3. The sector frame as described in claim 1, characterized in that, These connecting parts are several stationary blades.

4. The fan frame of claim 3, wherein, The cross-sectional shape of the wing is the same as that of the connector.

5. The fan frame of claim 1, wherein, Each wing extends along the direction of extension of each connector.

6. The fan frame of claim 1, wherein, Each wing is connected to each connector via a first connecting portion and a second connecting portion. The first connecting portion forms a first gap between the wing and the connector, and the second connecting portion forms a second gap between the wing and the connector. The first gap and the second gap are at least 0.9 mm.

7. The fan frame of claim 6, wherein, The ratio of the first spacing to the second spacing is 0.7 to 3.

8. The fan frame of claim 1, wherein, Each wing has a first radial end and a second radial end, and the extension length of each wing from the first radial end to the second radial end is 0.1 to 0.9 times the length of the connector.

9. The fan frame of claim 8, wherein, Each wing has an inner edge and an outer edge. The first radial end and the second radial end form a first straight-line distance at the outer edge. Each connector has a connector side edge adjacent to each wing. The side edge of each connector forms a second straight-line distance between the frame and the shaft connection. The ratio of the first straight-line distance to the second straight-line distance is 0.1 to 0.

9.

10. The fan frame of claim 1, wherein, Each connector has a top edge and a bottom edge in the axial direction, and there is a first minimum axial height between the top edge and the bottom edge. Each wing has an inner edge and an outer edge opposite to each other, and there is a second minimum axial height between the inner edge and the outer edge of the wing. The second minimum axial height is greater than or equal to 1 / 2 of the first minimum axial height, and the second minimum axial height is less than or equal to the first minimum axial height.

11. A heat dissipating fan characterized by comprising: include: A sector frame as described in any one of claims 1 to 10; and A fan wheel, which is rotatably located at the shaft joint.

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