CN2549233Y

CN2549233Y - Fan frame

Info

Publication number: CN2549233Y
Application number: CN 02236086
Authority: CN
Inventors: 黄文喜; 林国正; 张楯成; 刘文豪
Original assignee: Delta Electronics Inc
Current assignee: Taida Electronic Industry Co Ltd; Delta Electronics Inc
Priority date: 2002-05-31
Filing date: 2002-05-31
Publication date: 2003-05-07
Anticipated expiration: 2012-05-31

Abstract

The utility model discloses a fan frame which is suitable to electric device. the technical proposal of the utility model is that the lateral edge of the fan frame which is provided with an opening is provided with an air inlet channel; and the air inlet channel comprises openings which are formed on the surface and the concave part of the lateral edge of the fan frame, and an auxiliary air inlet which is arranged inside the concave groove opposite to the diameter direction of the fan blade positioned inside the opening. Thereby, when the fan blades rotate, the air can not only enters into through the opening, but also can enter into through the air inlet channel which consists of the auxiliary opening and the opening, thereby effectively increasing the air inlet area and increasing the air quantity of the fan.

Description

Fan frame

Technical field

The utility model relates to a kind of fan frame, outstanding reference and a kind ofly be applicable to electronic equipment and can improve the inlet air area and increase the fan frame of air quantity of fan.

Background technique

Recently, the output power along with electronic equipment is more and more big, frequency of okperation is more and more high, and is also ardent day by day for the demand of more dynamical radiation fan.For improving the heat dissipation that generally is used for the radiation fan of electronic equipments such as power supply unit, computer at present, tradition improves the method for the heat dissipation of fan normally sets about from increase rotating speed and improvement blade external form, in the hope of increasing air quantity.

Yet the improvement of the raising of rotation speed of the fan and blade external form all has its limit.Be depicted as an existing radiation fan as 1A to Figure 1B, radiation fan 1 in Figure 1A has the fan frame 2 that is generally square, and flabellum 6 and coil, magnet, bearing (not icon) etc. are installed in the hole 4 of these fan frame 2 central authorities, and utilize the screw that passes screw mounting hole 8 that this fan 1 is fixed on the location.

Shown in the Figure 1B that is cut open by the A-A line segment of Figure 1A, this fan 1 is the rotation that utilizes this flabellum 6, and air is entered from the upside of this fan 1, then blows out from downside by this hole 4.The inlet air area of this kind fan only is the opening area in this hole 4, and the opening area in this hole 4 only is slightly larger than the area of these flabellum 6 external diameters.

And radiation fan 10 as shown in Figure 2 is another three-dimensional side view of existing fan, it has the fan frame 12 that is generally square, and flabellum 16 and coil, magnet, bearing (not icon) etc. are installed in the hole 14 of these fan frame 12 central authorities, and utilize the screw that passes screw mounting hole 18 that this fan 10 is fixed.

Wherein, the external form of this flabellum 16 has bigger gradient than the external form of the flabellum among Figure 1A 6, and its area is big than the flabellum among Figure 1A 6 also.

Yet aforesaid fan 10 also is the rotation that utilizes this flabellum 16, and air is entered from the upside of this fan 10, then blows out (seeing also Fig. 2) from downside by this hole 14.The inlet air area of this kind fan only is the opening area in this hole 14 (promptly being slightly larger than the area of the circle of these flabellum 16 external diameters).

Therefore, no matter be fan 1 or fan 10, it all uses existing fan frame, though do the design that can improve air quantity in the flabellum external form, be subject to the restriction of the motor rotary speed limit and flabellum certainty on external form itself, make fan duty be difficult for improving.Simultaneously, the wind inlet area of its fan is only bigger than flabellum, and only unidirectional inlet air, and air quantity is little, thereby has limited the effect of heat radiation.

As mentioned above as can be known, how when facing the bottleneck of fan usefulness on improving, find out the method that solves its bottleneck and improve the heat dissipation of fan, in the hope of increasing air quantity, real for needing the problem of improvement badly.

The model utility content

Main purpose of the present utility model provides a kind of fan frame, and it can increase the inlet air area, to increase the usefulness of air quantity and then raising fan.

For reaching above-mentioned purpose, the utility model provides a kind of fan frame, it is the framework with perforate, in this perforate electric fan can be installed, this flabellum rotates the air-flow system that driven and enters then from an end of this perforate and blow out from the other end, it is characterized in that: the side edge portions beyond the perforate of this fan frame is formed with surface and the recess that is opened on this lateral margin, and offers the auxiliary inlet port that allows air to enter from the radial outer periphery of this flabellum via this recess between this recess and this perforate.

Thus, total inlet air area also comprises the opening of each recess and the area of auxiliary inlet port except the opening area of impenetrating mouth, therefore can multidirectional inlet air, and increase air quantity, and then improve the usefulness of fan.

In order further to understand feature of the present utility model and technology contents, please consult followingly in detail about detailed description of the present utility model and accompanying drawing, but should be appreciated that appended graphic explanation only for reference is not in order to limit the utility model.

Description of drawings

Figure 1A is the planimetric map that shows the fan integral body that adopts the known fan frame.

Figure 1B is the part enlarged view shown in showing in the sectional view cut open along the A-A line segment of Figure 1A and the broken circle.

Fig. 2 is the stereogram that shows the fan integral body of another known fan frame.

Fig. 3 A is the planimetric map that shows the fan integral body of the fan frame that adopts the utility model first embodiment.

Fig. 3 B is the stereogram that shows the fan integral body of the fan frame that adopts the utility model first embodiment.

Fig. 3 C is the part enlarged view shown in the sectional view cut open of the B-B line segment of displayed map 3A and the broken circle.

Fig. 4 A is the planimetric map that shows the fan integral body of the fan frame that adopts the utility model second embodiment.

Fig. 4 B is the stereogram that shows the fan integral body of the fan frame that adopts the utility model second embodiment.

Fig. 4 C is the part enlarged view shown in the sectional view cut open of the C-C line segment of displayed map 4A and the broken circle.

Fig. 5 A is the planimetric map that shows the fan integral body of the fan frame that adopts the utility model the 3rd embodiment.

Fig. 5 B is the stereogram that shows the fan integral body of the fan frame that adopts the utility model the 3rd embodiment.

Fig. 5 C is the part enlarged view shown in the sectional view cut open of the D-D line segment of displayed map 5A and the broken circle.

Fig. 6 A is the planimetric map that shows the fan integral body of the fan frame that adopts the utility model the 4th embodiment.

Fig. 6 B system shows the stereogram of the fan integral body of the fan frame that adopts the utility model the 4th embodiment.

Fig. 6 C is the part enlarged view shown in the sectional view cut open of the E-E line segment of displayed map 6A and the broken circle.

Fig. 7 A is the planimetric map that shows the fan integral body of the fan frame that adopts the utility model the 5th embodiment.

Fig. 7 B is the stereogram that shows the fan integral body of the fan frame that adopts the utility model the 5th embodiment.

Fig. 7 C is the part enlarged view shown in the sectional view cut open of the F-F line segment of displayed map 7A and the broken circle.

Embodiment

First embodiment

Fig. 3 A, the 3rd B figure and Fig. 3 C be graphic according to first embodiment of the present utility model drafting, wherein, fan 20 can adopt the framework of any known fan, the framework that for example comprises coil, magnet, bearing and flabellum, and can comprise the flabellum external form of doing the design that can improve air quantity, because of its constitute in detail and working principle for known so do not give unnecessary details in addition, only with regard to the explanation of structure difference.

Shown in Fig. 3 A and Fig. 3 B, fan frame 22 of the present utility model can be the framework that central authorities have the general square shape of perforate 24, flabellum 26 can be installed in this perforate 24 reach in order to order about the driving mechanism (not icon) that this flabellum 26 rotates.The air-flow that this flabellum 26 is driven when rotating is that upper end open from this perforate 24 enters then and blows out from lower ending opening, and shown in Fig. 3 C, and the upper and lower end opening of this perforate 24 must form the conical surface 242,244 respectively, entering and blowing out in order to air-flow.

Shown in Fig. 3 A to Fig. 3 C, the lateral margin surface portion of this fan frame 22, i.e. four semi-triangular corner portions located beyond the perforate on the general square shape framework of present embodiment 24 are formed with the recess 28 on the lateral margin surface that is opened on this fan frame 22 respectively.The bottom of this recess 28 is formed with and can passes for screw, with these fan 20 securing screw mounting holes 281, and is formed with auxiliary inlet port 282 between this recess 28 and this perforate 24.

The gradient that this auxiliary inlet port 282 is can be approximately identical with the conical surface 242 of these perforate 24 upper ends, and roughly to become 90 subtended angles of spending towards this flabellum 26, therefore, when this flabellum 26 rotates, air not only can enter from the opening of this perforate 24, and among Fig. 3 C of the part enlarged view shown in sectional view of cutting open as the B-B line segment of displayed map 3A and the broken circle as can be known, air also can enter via each auxiliary inlet port 282 from the opening of each recess 28 smooth-goingly.

So, adopt total inlet air area of the fan 20 of the utility model fan frame 22, except the opening area of this impenetrating mouth 24, also comprise the opening area of each recess 28, improve the usefulness of fan so can increase air quantity, and then better radiating effect is provided.According to experimental result, adopt the fan 20 of the utility model fan frame 22 can increase about air quantity of 10% to 15%.

The profile that the framework of above-mentioned fan frame 22 is not limited only to roughly be square, other is for example circular, oval, rhombus or perforate 24 are not formed at central authorities etc. has the fan circle body of different profiles of the side edge portions that can form for recess 28 also all applicable in the structure of the present utility model.

Second embodiment

Fig. 4 A, Fig. 4 B and Fig. 4 C be according to second embodiment of the present utility model draw graphic, wherein, fan 30 can adopt the framework of any known fan, the framework that for example comprises coil, magnet, bearing and flabellum, and can comprise the flabellum external form of doing the design that can improve air quantity, because of its constitute in detail and working principle for known so do not give unnecessary details in addition, only with regard to the explanation of structure difference.

Shown in Fig. 4 A and Fig. 4 B, fan frame 32 of the present utility model can be the framework that central authorities have the general square shape of perforate 34, flabellum 36 can be installed in this perforate 34 reach in order to order about the driving mechanism (not icon) that this flabellum 36 rotates.The air-flow that this flabellum 36 is driven when rotating enters then from the upper end open of this perforate 34 and to blow out from lower ending opening, and shown in Fig. 4 C, and the upper and lower end opening of this perforate 34 forms the conical surface 342,344 respectively, entering and blowing out in order to air-flow.

Shown in Fig. 4 A to Fig. 4 C, the lateral margin surface portion of this fan frame 32, i.e. four semi-triangular corner portions located beyond the perforate on the general square shape framework of present embodiment 34 are formed with the recess 38 on the lateral margin surface that is opened on this fan frame 32 respectively.The bottom of this recess 38 is formed with and can passes for screw, with the screw mounting hole 381 that this fan 30 is being fixed, and this recess 38 tie up between the lateral margin surface of this fan frame 32 and this screw mounting hole 381 with one suitably distance have auxilairy air intake 382 so that the inlet air surface of this auxilairy air intake 382 and this fan frame 32 keeps a suitable distance.

The gradient that this auxilairy air intake 382 is can be approximately identical with the conical surface 342 of these perforate 34 upper ends, and with acutangulate subtended angle roughly towards this flabellum 36, therefore, when this flabellum 36 rotates, air not only can enter from the opening of this perforate 34, and among Fig. 4 C of the part enlarged view shown in sectional view of cutting open as the B-B line segment of displayed map 4A and the broken circle as can be known, air also can be from each auxilairy air intake 382 of each recess 38 and is entered smooth-goingly.

So, adopt total inlet air area of the fan 30 of the utility model fan frame 32, except the opening area of this impenetrating mouth 34, the area that also comprises each auxilairy air intake 382 of each recess 38, and because this auxilairy air intake 382 is and the surperficial suitable distance that keeps of the inlet air of this fan frame 32, auxiliary inlet port among more aforementioned first embodiment has bigger inlet air area, improves the usefulness of fan so more can increase air quantity, and then better radiating effect is provided.

Simultaneously, because the structure of using fan circle body of the present utility model also to possess existing fan frame reaches the advantage of material saving by force, therefore, except keeping the structural strength of original fan frame, do not increase outside the advantages such as using material,, and make total inlet air area greatly increase more because the frame segment space is fanned in utilization, thereby increase air quantity and improve the usefulness of fan, and then better radiating effect is provided.

The 3rd embodiment

Fig. 5 A, 5B figure and Fig. 5 C be graphic according to first embodiment of the present utility model drafting, wherein, fan 40 with and structure no longer be that literary composition is given unnecessary details with effect identical person described in first embodiment and second embodiment, only be illustrated with regard to the structure difference.

Shown in Fig. 5 A and Fig. 5 B, be respectively the planimetric map and the stereogram of the fan integral body of fan frame 42 of the present utility model, its structure is identical with person described in second embodiment as first embodiment, the air-flow system that its flabellum 46 is driven when rotating enters then from the upper end open of perforate 44 and blows out from lower ending opening, shown in Fig. 5 C, and the upper and lower end opening of this perforate 44 must form the conical surface 442 respectively, 444, entering and blowing out in order to air-flow.

Shown in Fig. 5 A to Fig. 5 C, four corner portions located of this fan frame 42 form screw mounting hole 481 and auxilairy air intake 482, this screw mounting hole 481 is to pass for screw, so that this fan 40 is being fixed, and this auxilairy air intake 482 is slightly triangular in shape, its mode with flush surfaces be opened in this fan frame 42 four corner portions located screw mounting hole 481 on, make this fan frame 42 still can intactly surround this flabellum 46, its four corner portions located then can become the auxilairy air intake 482 that air is entered smooth-goingly, as shown in Fig. 5 C of the part enlarged view shown in sectional view of cutting open as the C-C line segment of displayed map 5A and the broken circle.

Wherein, this auxilairy air intake 482 and the formed conical surface 442 of the upper end open of this perforate 44 are with the about obtuse-angulate subtended angle of gradient identical with this conical surface, and with the formed conical surface 444 of the lower ending opening of this perforate 44 with the about acutangulate subtended angle of gradient identical, to form towards the mode of flabellum with this conical surface.

Therefore, adopt total inlet air area of the fan 40 of the utility model fan frame 42, except the opening area of this impenetrating mouth 44, the area that also comprises each auxiliary inlet port 482 improves the usefulness of fan, and then better radiating effect is provided so can increase air quantity, and because this auxilairy air intake 482 is arranged at four corner portions located of this fan frame 42, have bigger inlet air area than previous embodiment, improve the usefulness of fan so more can increase air quantity, and then better radiating effect is provided.

The 4th embodiment

Fig. 6 A, Fig. 6 B and Fig. 6 C be according to the 4th embodiment of the present utility model draw graphic, wherein, fan 50 with act on described in the previous embodiment identical, therefore only illustrate that with regard to the structure difference identical effect is no longer given unnecessary details for literary composition.

Shown in Fig. 6 A to Fig. 6 C, fan frame 52 of the present utility model can be the framework that central authorities have the general square shape of perforate 54, flabellum 56 can be installed in this perforate 54 reach in order to order about the driving mechanism (not icon) that this flabellum 56 rotates.

Four corner portions located at this fan frame 52 adopt hollow design, be formed with screw mounting hole 581 and auxilairy air intake 582 in these four corner portions located, this screw mounting hole 581 is to pass with this fan 50 stationary positioned persons for screw, 582 of this auxilairy air intakes are opened in the lateral margin surface of four hollow corner portions located of this fan frame 52, make the framework of its this fan frame 52 form these auxilairy air intakes 582, get so that air enters this perforate 54 via the corner portions located of this hollow smooth-goingly at the lateral margin of four semi-triangular corner portions located of surrounding this flabellum.

Among Fig. 6 C of the part enlarged view shown in sectional view of cutting open as the D-D line segment of displayed map 6A and the broken circle as can be known, the air-flow that is driven when this flabellum 56 rotates enters then from the upper end open of this perforate 54 and blows out from lower ending opening, and the upper and lower end opening of this perforate 54 forms the conical surface 542 respectively, 544, in order to the entering and blowing out of air-flow, air also can enter from each auxilairy air intake 582 smooth-goingly simultaneously.

Wherein, the conical surface 542,544 that the upper and lower end opening institute of this auxilairy air intake 582 and this perforate 54 forms respectively is with about gradient obtuse-angulate subtended angle identical with this conical surface, to form towards the mode of flabellum.

So, adopt total inlet air area of the fan 50 of the utility model fan frame 52, except the opening area of this impenetrating mouth 54, also comprise the opening area of each auxilairy air intake 582, improve the usefulness of fan so can increase air quantity, and then better radiating effect is provided.

The 5th embodiment

Fig. 7 A, Fig. 7 B and Fig. 7 C be according to the 5th embodiment of the present utility model draw graphic, wherein, fan 60 with act on described in the previous embodiment identical, therefore only illustrate that with regard to the structure difference identical effect is no longer given unnecessary details for literary composition.

Shown in Fig. 7 A to Fig. 7 C, four corner portions located of fan frame 62 of the present utility model also as the described employing hollow design of the 4th embodiment, be formed with recess 68, screw mounting hole 681, auxilairy air intake 682 and auxilairy air intake 683 in these four corner portions located.

This screw mounting hole 681 is to pass with this fan 60 stationary positioned persons for screw, 682 of this auxilairy air intakes are the recess 68 that is formed at the lateral margin surface of this fan frame 62 respectively, it is to offer the opening that is formed between this recess 68 and this perforate 64, makes air be able to smooth-going ground and enters thus.

683 of this auxilairy air intakes are as the described design of adopting of the 4th embodiment, system is opened in the lateral margin surface of four hollow corner portions located of this fan frame 62, make the framework of its this fan frame 62 be formed with each auxilairy air intake 683, enter this perforate 64 via these auxilairy air intakes 683 to allow air in four semi-triangular corner portions located of surrounding this flabellum 66.

Among Fig. 7 C of the part enlarged view shown in sectional view of cutting open as the E-E line segment of displayed map 7A and the broken circle as can be known, the air-flow that is driven when this flabellum 66 rotates enters then from the upper end open of this perforate 64 and blows out from lower ending opening, and the upper and lower end opening of this perforate 64 forms the conical surface 642 respectively, 644, in order to the entering and blowing out of air-flow, air also can enter from each auxilairy air intake 682 and each auxilairy air intake 683 smooth-goingly simultaneously.

Present embodiment is characterised in that four corner portions located of the lateral margin except the perforate 64 of this fan frame 62 are to adopt outside the hollow design, the opening of recess 68 that is opened in the lateral margin surface of this fan frame 62 in these four corner portions located respectively makes air enters this perforate via this recess first auxilairy air intake (promptly to be formed between this recess 68 and this perforate 64, each auxilairy air intake 682), and the lateral margin surface that is opened in four hollow corner portions located of this fan frame 62, make the framework of this fan frame 62 allow air to enter second auxilairy air intake (that is each auxilairy air intake 683) of this perforate 64 via the corner portions located of this hollow in the lateral margin formation of four semi-triangular corner portions located of surrounding this flabellum 66.

So, adopt total inlet air area of the fan 60 of the utility model fan frame 62, except the opening area of this impenetrating mouth 64, the opening area that also comprises each auxilairy air intake 682 and each auxilairy air intake 683, increased total inlet air area of this fan 60 widely, improve the usefulness of fan so can increase air quantity, and then better radiating effect is provided.

Simultaneously, in the upper and lower end opening of these perforates the conical surface that forms respectively must look the needs of each auxilairy air intake, the additional structure that equates effectiveness as spoiler, flow plug or tool, make air only can enter by the inlet air side smooth-goingly, and allow air to enter these perforates via these auxilairy air intakes.

In addition, in the above-described embodiments, though these recesses and this auxiliary inlet port and auxilairy air intake are designed primarily to and are formed at the inlet air oral-lateral, yet the formation position of these recesses and this auxiliary inlet port and auxilairy air intake and quantity also must be looked actual design and need suitably be changed, for example only this recess and auxiliary inlet port or auxilairy air intake are formed at the wherein side of framework side edge portions and non-homogeneous laying or the like, and nonessential being defined in shown in above-mentioned embodiment.

That is, the above, only own for specific embodiment of the utility model, but be not in order to limit practical range of the present utility model, other is any not to deviate from the equivalence of being done under spirit of the present utility model and the technology and changes or modify, and all should still be included within the following claim.

Claims

1. fan frame, it has the framework of a perforate, in this perforate electric fan can be installed, this flabellum rotates the air-flow that driven and enters then from an end of this perforate and blow out from the other end, it is characterized in that: the side edge portions beyond this perforate of this fan frame is formed with recess, and is provided with the permission air between this recess and this perforate and enters the auxiliary inlet port of this perforate via this recess.

2. fan frame as claimed in claim 1 is characterized in that: this recess bottom side is formed with the screw mounting hole.

3. fan frame as claimed in claim 1 is characterized in that: the upper end of this perforate is formed with the conical surface, and this auxiliary inlet port becomes 90 subtended angles of spending roughly to form towards the mode of flabellum with approximately identical with this conical surface gradient.

4. fan frame as claimed in claim 1 is characterized in that: the upper end of this perforate is formed with the conical surface, and this auxilairy air intake is formed towards the mode of flabellum with the about acutangulate subtended angle of gradient identical with this conical surface.

5. fan frame as claimed in claim 1, it is characterized in that: the upper end and the lower end of this perforate are formed with the conical surface, make this auxilairy air intake at the formed conical surface of the upper end open of this perforate with the about obtuse-angulate subtended angle of gradient identical with this conical surface, and with the formed conical surface of the lower ending opening of this perforate with the about acutangulate subtended angle of gradient identical, to form towards the mode of flabellum with this conical surface.

6. fan frame, it has the framework of perforate, in this perforate electric fan can be installed, this flabellum rotates the air-flow that driven and enters then from an end of this perforate and blow out from the other end, it is characterized in that: four corner portions located of the lateral margin beyond the perforate of this fan frame are for adopting hollow design, in these four corner portions located, be opened in the opening of recess on the lateral margin surface of this fan frame respectively, to be formed between this recess and this perforate, make air enter first auxilairy air intake of this perforate via this recess, and the lateral margin surface that is opened in four hollow corner portions located of this fan frame, make this fan circle body allow air to enter second auxilairy air intake of this perforate via the corner portions located of this hollow in the lateral margin formation of four semi-triangular corner portions located of surrounding this flabellum.

7. fan frame as claimed in claim 6 is characterized in that: the upper end of this perforate and lower end are formed with the conical surface respectively, and these auxilairy air intakes are all formed towards the mode of flabellum with the about obtuse-angulate subtended angle of gradient identical with this conical surface.

8. as each described fan frame in the claim 1 to 7, it is characterized in that: the framework of this fan frame is general square shape, circle, ellipse or rhombus.