TWI782292B - Fan frame structure - Google Patents

Abstract

A fan frame structure includes a frame having a bottom surface, a top surface and a flow passage. The flow passage is located between the bottom surface and the top surface, and the bottom surface and the top surface are provided with an outlet opening and an inlet opening, respectively, which are communicable with the flow passage. The outlet opening has an outlet edge, on and along which a plurality of notches communicable with the flow passage is cut. By providing the notches on the outlet edge, it is able to largely reduce the noise and the vibration produced when a fan operates.

Description

Fan frame structure

The invention relates to a fan frame structure, in particular to a fan frame structure which can greatly reduce the noise generated when the fan is running.

With the rapid development of electronic products towards high performance, high frequency, high speed and thinness, the heating temperature of electronic products is getting higher and higher, which is prone to instability and affects product reliability and service life. Therefore, heat dissipation has become a One of the important issues of electronic products, in order to effectively dissipate heat, it is known that the cooling airflow generated by the fan is used to forcibly dissipate the heat, so as to dissipate the heat.

The principle of the cooling airflow generated by the fan is nothing more than the design of the fan blades on the rotor, through the motor and the circuit board to drive the rotor, so that the rotor rotates at a rated speed, and the rotating wing blades turn and do work to generate thrust. Cooling air flow, and when the rotor rotates, the frame often generates unnecessary fundamental frequency vibrations and generates additional noise, and as the heat dissipation requirements of servers and network communication equipment become more and more stringent, the fan with a normal speed is overwhelmed, so it tends to The speed of the fan needs to be increased, and the airflow at the outlet of the fan is turbulent, so it is accompanied by the huge noise problem of the fan as a whole, which needs to be solved urgently.

As mentioned above, the prior art has the following disadvantages: 1. Loud noise is generated when the fan is running at high speed; 2. Serious vibration is generated when the fan is running.

Therefore, how to solve the above-mentioned conventional problems and deficiencies is the direction that the inventor of this case and the relevant manufacturers engaged in this industry want to study and improve urgently.

Therefore, in order to effectively solve the above problems, the main purpose of the present invention is to provide a fan frame structure that can greatly reduce the noise of the fan during operation.

A secondary object of the present invention is to provide a fan frame structure that greatly reduces the vibration generated when the fan is running.

To achieve the above object, the present invention provides a fan frame structure, which includes a frame body with a bottom surface and a top surface and a flow channel, the flow channel is arranged between the bottom surface and the top surface, the bottom surface and the top surface The surface respectively has an outlet and an inlet communicating with the flow channel, wherein the outlet has an outlet edge, and the outlet edge is provided with a plurality of grooves communicating with the flow channel.

Therefore, through the design of the structure of the present invention, when the airflow is discharged to the outside of the frame through the outlet, the turbulent gas at the outlet can be brought into contact with the air outside the frame early by the design of the groove on the edge of the outlet. It can not only reduce the noise generated by the fan when it is running, but also greatly reduce the vibration generated by the fan when it is running.

2: Fan frame structure

20: bottom surface

21: top surface

22: Runner

23: inner wall

24: Export

240: Exit edge

25: Entrance

26: Bevel

27: frame

3: Groove

31: Notch height

4: base

40: connector

401: Connector thickness

5: fan wheel

Figure 1 is a perspective view of the first embodiment of the fan frame structure of the present invention; Figure 2 is a perspective view of another angle of the first embodiment of the fan frame structure of the present invention; Figure 3 is a fan frame structure of the present invention The perspective view of the second embodiment; Figure 4 is a perspective view of the third embodiment of the fan frame structure of the present invention; Figure 5 is a perspective view of the fourth embodiment of the fan frame structure of the present invention; Figure 6 is the perspective view of the present invention A perspective view of the fifth embodiment of the fan frame structure.

The above-mentioned purpose of the present invention and its structural and functional characteristics will be described based on the preferred embodiments of the accompanying drawings.

Please refer to Figures 1 and 2, which are perspective views of the fan frame structure of the present invention. As shown in the figure, a fan frame structure 2 includes a frame 27, which has a bottom surface 20 and a top. Surface 21 and flow channel 22, the flow channel 22 is located between the bottom surface 20 and the top surface 21, and the flow channel 22 is surrounded by an inner wall 23 of the frame body 27, the bottom surface 20 and the top surface 21 An outlet 24 and an inlet 25 are respectively connected to the channel 22 .

In the flow channel 22 of the aforementioned frame body 27, a fan wheel 5 is correspondingly pivoted, and the structure of the fan wheel 5 is a structure of a conventional fan wheel (with a hub, and a plurality of fans are extended outwards from the outer peripheral side of the hub. leaf), so no further details are given here.

In addition, the fan frame structure 2 further has a base 4, the base 4 is connected to the aforementioned frame body 27 through a plurality of connecting pieces 40 and supported at the outlet 24, and the connecting piece 40 is used in the preferred embodiment system. Ribs are used for illustration, but are not limited thereto, and may be vanes or other equivalents.

The outlet 24 of the aforementioned frame body 27 has an outlet edge 240, which is a bent angled surface. The outlet edge 240 is provided with a plurality of grooves 3 corresponding to the base 4 and communicating with the bottom surface 20 and the inner side wall 23 and communicating with the flow channel 22. In this embodiment, each groove 3 is Arranged at equal intervals around the outlet edge 240 (that is, the junction of the bottom surface 20 of the frame body 27 and the inner side wall 23), and the grooves 3 form a notch height 31 on the inner side wall 23 not exceeding A connection part thickness 401 of the connection part 40 . But not limited thereto, the grooves 3 can also be arranged at unequal intervals around the outlet edge 240 (as shown in Figure 3, it is the second embodiment of the present invention), and the present embodiment The groove 3 and the outlet edge 240 are in an orthogonal structure (that is, the intersection of the groove 3 and the outlet edge 240 forms a 90° angle), or, as shown in Figure 4, the grooves The groove 3 and the outlet edge 240 can be in a non-orthogonal configuration (that is, the intersection of the groove 3 and the outlet edge 240 forms a An included angle other than 90° is the third embodiment of the present invention). In addition, the number and size of the grooves 3 can also be adjusted according to user needs, which will be described first.

Continue referring to Fig. 5, which is a perspective view of the fourth embodiment of the fan frame structure of the present invention. As shown in the figure, the outlet edge 240 in this embodiment is a slope 26, that is, the slope 26 is formed on the The junction of the inner wall 23 of the frame body 27 and the bottom surface 20, the groove 3 is formed on the slope 26, and the shape of the groove 3 is a strip-shaped structure, or it can be as shown in Figure 6 Shown (is the fifth embodiment of the present invention) is a triangular structure similar to "isosceles triangle" or "equal triangle" or "isosceles trapezoid", in other words, the shape of the groove 3 It can also be adjusted and changed according to the needs of users, and the effect of this case can be achieved.

Therefore, through the design of this structure of the present invention, when the airflow is discharged to the outside of the frame body 27 through the outlet 24, the turbulent gas at the outlet 24 can be contacted earlier by the design of the groove 3 provided at the outlet edge 240. The air outside the frame body 27 can not only reduce the noise generated when the fan is running, but also greatly reduce the vibration generated when the fan is running.

As mentioned above, the present invention has the following advantages compared with the prior art: 1. Greatly reduce the noise when the fan is running at high speed; 2. Greatly reduce the vibration generated when the fan is running.

The present invention has been described in detail above, but the above is only a preferred embodiment of the present invention, and should not limit the scope of the present invention, that is, all equivalent changes and modifications made according to the application scope of the present invention etc., should still fall within the scope of the patent coverage of the present invention.

2: Fan frame structure

20: bottom surface

22: Runner

23: inner wall

24: Export

240: Exit edge

27: frame

3: Groove

4: base

40: connector

Claims (7)

A fan frame structure, comprising: a frame body with a bottom surface and a top surface, a flow passage and an inner wall surrounding and defining the flow passage, the flow passage is arranged between the bottom surface and the top surface, the bottom surface and the top surface The top surface has an outlet and an inlet to communicate with the flow channel, wherein the outlet has an outlet edge located at the joint between the inner wall and the bottom surface, a base is connected to the frame through a plurality of connecting pieces and supported on the outlet , and the edge of the outlet is provided with a plurality of grooves corresponding to the base and communicating with the bottom surface and the inner wall and communicating with the flow channel, and the grooves form a notch on the inner wall with a height not exceeding the connecting piece A connector thickness of . The fan frame structure according to claim 1, wherein the grooves are arranged at equal intervals or unequal intervals or staggered intervals around the edge of the outlet. The fan frame structure according to claim 1, wherein the outlet edge is a bent angled surface or an inclined surface. The fan frame structure according to claim 1, wherein the shape of the groove is a long strip, a triangle, a polygon, or an isosceles trapezoid. The fan frame structure according to claim 1, wherein the groove and the edge of the outlet are arranged orthogonally or non-orthogonally. The fan frame structure according to claim 1, wherein the connecting parts are vanes or ribs. The fan frame structure according to claim 1, wherein a fan wheel is pivotally arranged in the flow channel.

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