CN201437799U

CN201437799U - Frame of fan

Info

Publication number: CN201437799U
Application number: CN2009201533065U
Authority: CN
Inventors: 黄泽雷; 楚辉; 巩宜亮; 余启铭
Original assignee: Delta Optoelectronics Inc
Current assignee: Delta Electronics Inc; Delta Optoelectronics Inc
Priority date: 2009-06-12
Filing date: 2009-06-12
Publication date: 2010-04-14
Anticipated expiration: 2019-06-12

Abstract

The utility model discloses a frame of a fan, which adopts a quasi-square shape and comprises an upper frame body and a lower frame body. The upper frame body is provided with four side walls, an air inlet is formed in the center of the top surface of the upper frame body, and hollow parts are arranged at four corners on the top surface of the upper frame body respectively; the lower frame body is provided with four side walls, and an air outlet is formed in the center of the bottom surface of the lower frame body; the lower and the upper frame bodies are matched with each other; four side walls of the upper frame body and that of the lower frame body form the four side walls of the frame of the fan; and a hole is formed at the one side edge of each side wall of the frame of the fan.

Description

Fan frame

Technical field

The utility model relates to a kind of its fan frame, particularly relates to a kind of fan frame that improves air quantity of fan and radiating efficiency.

Background technique

Continuous lifting along with electronic equipment usefulness, sink or radiation system have become one of outfit indispensable in the existing electronic equipment, because it is the heat energy that electronic equipment produced is if not in addition suitably dissipation gently then causes the usefulness variation, heavy then can cause burning of electronic equipment.Sink is for microelectronic element (intergrated circuit for example, IC) important especially, because along with the increase of integration and the progress of encapsulation technology, make the area of intergrated circuit constantly dwindle, simultaneously the heat energy accumulated of per unit area also relatively can be higher, so the sink of high heat dissipation efficiency is the positive object of researching and developing of electronic industry circle institute always.

And in order to improve heat dissipation, need fan that higher air quantity is provided, and fan one of mode of high air quantity is provided is to improve rotation speed of the fan.Yet in the design of fan, rotating speed is impossible unlimited to improve, because of flabellum when the high rotating speed, blade will be born high pressure, flabellum can cause distortion even fracture and produce dangerous greatly this moment.Simultaneously under the high rotating speed, the mechanism of motor and bearing life also will bear higher burden, threat to mechanism's life-span is also very big, and the wind inlet periphery of conventional fan is the design of ramp type, promptly downward-sloping from outside to inside, and sidewall is closed state around in the fan frame, so when flabellum rotated stall, the situation that the fan heat dispersion descends and noise waveform increases was very obvious.Therefore, except that the rotating speed that improves fan, how to provide higher air quantity, become one of important topic by the structure that changes fan.

The model utility content

The purpose of this utility model is to provide a kind of fan frame that improves air quantity of fan and radiating efficiency.

Another purpose of the present utility model is to provide a kind of and ensures when the wheel rotation stall of fan, can not reduce fan performance, also can not increase the fan frame of noise waveform.

For reaching above-mentioned purpose, the utility model proposes a kind of fan frame, it slightly is square, and includes a upper frame body, a lower frame body and a motor base.Upper frame body has four sidewalls, and the central authorities of the end face of upper frame body offer a wind inlet, and four end angles of the end face of upper frame body offer a hollow part respectively.Lower frame body has four sidewalls, the central authorities of the bottom surface of lower frame body offer an exhaust outlet, lower frame body and upper frame body are involutory mutually, and make four sidewalls of four sidewalls of upper frame body and lower frame body constitute four sidewalls of fan frames, and four sidewalls of fan frame have a side perforate respectively.Motor base is arranged in exhaust outlet and is connected in lower frame body via a plurality of ribs.

Advantage of the present utility model is, by the side perforate on four sidewalls of the utility model fan frame, and the hollow part of upper frame body, can increase the air quantity of going into air quantity and flowing out of fan, and then promote the radiating efficiency of fan by exhaust outlet.

Description of drawings

Fig. 1 is the stereogram according to its fan frame of the utility model preferred embodiment;

Fig. 2 is the stereogram of the upper frame body among Fig. 1;

Fig. 3 is the top view of the upper frame body among Fig. 1;

Fig. 4 is the stereogram of the lower frame body among Fig. 1;

Fig. 5 is the top view of the lower frame body among Fig. 1;

Fig. 6 is the fan of the existing fan of utilization frame and blast that fan produced and the air quantity characteristic plotted curve of using fan frame of the present utility model.

The primary component symbol description

10: upper frame body

101: sidewall

102: wind inlet

103: hollow part

104: the first buckle structures

104a: fastening hole

Screw ran through structure in 105: the first

20: lower frame body

201: sidewall

202: exhaust outlet

203: the second buckle structures

203a: hook part

Screw ran through structure in 204: the second

30: motor base

301: rib

40: sidewall

401: the side perforate

A: inner edge surface

Embodiment

Hereinafter with reference to relevant drawings, a kind of fan frame according to the utility model preferred embodiment is described, wherein components identical will be illustrated with identical reference marks.

Please refer to shown in Figure 1ly, the fan frame 1 of the utility model preferred embodiment slightly is square, and it comprises a upper frame body 10, a lower frame body 20 and a motor base 30.

Again please be simultaneously with reference to Fig. 2 and shown in Figure 3, upper frame body 10 has four sidewalls 101, the central authorities of the end face of upper frame body 10 offer a wind inlet 102, make upper frame body 10 have an inner edge surface A in the periphery of wind inlet 102, inner edge surface A is the cambered surface that is level and smooth, and four end angles of the end face of upper frame body 10 offer a hollow part 103 respectively.

Again please be simultaneously with reference to Fig. 4 and shown in Figure 5, lower frame body 20 has four sidewalls 201, the central authorities of the bottom surface of lower frame body 20 offer an exhaust outlet 202, lower frame body 20 is involutory mutually with upper frame body 10, and four sidewalls 201 that make four sidewalls 101 of upper frame body 10 and lower frame body 20 constitute four sidewalls 40 of fan frames 1, and four sidewalls 40 of fan frame 1 have a side perforate 401 respectively.In present embodiment, side perforate 401 is opened in four sidewalls 201 of lower frame body 20 respectively, but not as limit, in other embodiments, side perforate 401 also can be opened in four sidewalls 101 of upper frame body 10, perhaps, also can offer a low groove respectively in the centre of the last ora terminalis of four sidewalls 201 of lower frame body 20, and the centre in the following ora terminalis of four sidewalls 101 of upper frame body 10 is offered a upper groove respectively, and side perforate 401 is involuted by this low groove and this upper groove.

Motor base 30 is arranged in exhaust outlet 202 and is connected in lower frame body 20 via a plurality of ribs 301.Motor base 30 usefulness for a motor and an impeller setting thereon, and when this motor running drives this wheel rotation, air-flow not only can be entered in the fan frame 1 by wind inlet 102, also can enter in the fan frame 1 with the side perforate 401 that is opened in four sidewalls 201 of lower frame body 20 by the hollow part 103 of upper frame body 10, to increase the air quantity of going into of fan, promote the radiating efficiency of fan, and can replenish the deficiency of air of suction surface of the flabellum of impeller, make the flabellum suction surface be difficult to form eddy current, turbulent flow, improve the stall of flabellum, and upper frame body 10 is the cambered surface that is level and smooth in the inner edge surface A of the periphery of wind inlet 102, not only but air-guiding is flowed into by wind inlet 102 swimmingly, also can ensure when wheel rotation stall, fan performance can be do not reduced, noise waveform can be do not increased yet.

Moreover, upper frame body 10 has four first buckle structures 104 and four first screws run through structure 105, and first buckle structure 104 has a fastening hole 104a, in present embodiment, wherein two first buckle structures 104 are arranged at the same sidewall 101 of upper frame body 10, two first 104 of buckle structures are arranged on the opposite side wall 101 of above-mentioned two first buckle structure 104 place sidewalls 101 in addition, but not as limit, in other embodiments, four first buckle structures 104 also can be arranged at respectively on each sidewall 101 of upper frame body 10.

Lower frame body 20 has four second buckle structures 203 equally and four second screws run through structure 204, this second buckle structure 203 extends upward a hook part 203a, and corresponding first buckle structure 104 is in upper frame body 10 place sidewalls 101 positions, these second buckle structure, 203 correspondences are arranged on the sidewall 201 of lower frame body 20 and make the hook part 203a of second buckle structure 203 can be fastened among the fastening hole 104a of first buckle structure 104, and upper frame body 10 and lower frame body 20 are combined closely.First screw runs through in the hollow part 103 that structure 105 is arranged at upper frame body 10 respectively, then be respectively arranged with second screw between four end angles of the periphery of exhaust outlet 202 and lower frame body 20 and run through structure 204, second screw runs through structure 204 and first screw runs through structure 105 correspondence mutually, wear respectively for four screws (figure do not show) that first screw runs through structure 105 and second screw runs through structure 204, and make upper frame body 10 and more closely combination of lower frame body 20.

By a large amount of experiments, draw " the Feng Ya ﹠amp of fan shown in Figure 6; Air quantity (P﹠amp; Q) characteristic curve ", it represents blast that fan produces and the relation between the air quantity, can be used as the important indicator of the radiating effect of judging fan.The P﹠amp of the fan of the existing tradition fan of dotted line representative utilization frame wherein; The Q characteristic, the P﹠amp of the fan of the utility model fan frame 1 is used in the solid line representative; The Q characteristic, and assign to see with regard to the center section part of these two curves, the stage casing part of this dotted line is lower than the stage casing part of this solid line, air quantity and the blast of fan in the stall zone of the existing tradition fan of its representative utilization frame all is lower than the fan of using the utility model fan frame 1, promptly uses the fan of the utility model fan frame 1 and will get well much at air quantity and the traditional fan of wind pressure ratio that the stall zone produced.

In sum, the utility model utilizes hollow part 103 and side perforate 401 to increase the air quantity of going into of fan, and then increase going into air quantity and promoting the air quantity that flows out by exhaust outlet 202 and the radiating efficiency of fan of fan, and can replenish the deficiency of air of suction surface of the flabellum of impeller, make the flabellum suction surface be difficult to form eddy current, turbulent flow, improve the stall of flabellum.And, be level and smooth cambered surface design by the inner edge surface A of upper frame body 10, but not only air-guiding is flowed into by wind inlet 102 swimmingly, also can ensure when wheel rotation stall, can not reduce fan performance, also can not increase noise waveform.

Claims

1. fan frame, this fan frame is square, it is characterized in that, this fan frame comprises: upper frame body, have four sidewalls, the central authorities of this upper frame body offer a wind inlet, and this upper frame body has an inner edge surface in the periphery of this wind inlet, this inner edge surface is the cambered surface that is level and smooth, and the end angle of this upper frame body offers a hollow part at least; Lower frame body, have four sidewalls, the central authorities of this lower frame body offer an exhaust outlet, and this lower frame body and this upper frame body are involutory mutually, and four sidewalls that make four sidewalls of this upper frame body and this lower frame body constitute four sidewalls of this fan frame, and the sidewall of this fan frame is provided with a side perforate at least; And motor base, be arranged in this exhaust outlet and be connected in this lower frame body via a plurality of ribs.

2. fan frame as claimed in claim 1 is characterized in that, this side perforate is arranged at this sidewall of this lower frame body.

3. fan frame as claimed in claim 1 is characterized in that, this side perforate is arranged at this sidewall of this upper frame body.

4. fan frame as claimed in claim 1, it is characterized in that, the centre of the last ora terminalis of this sidewall of this lower frame body has a low groove, and the centre of the following ora terminalis of this sidewall of this upper frame body has a upper groove, and this side perforate is involuted by this low groove and this upper groove.

5. fan frame as claimed in claim 1 is characterized in that, four of this upper frame body these end angles offer this hollow part respectively.

6. fan frame as claimed in claim 1 is characterized in that, the sidewall of this upper frame body has at least one first buckle structure, and the sidewall of this lower frame body has at least one second buckle structure, and this first buckle structure and this second buckle structure fasten mutually.

7. fan frame as claimed in claim 6 is characterized in that, this upper frame body has four these first buckle structures, and this lower frame body has four these second buckle structures, and this first buckle structure and this second buckle structure fasten mutually.

8. fan frame as claimed in claim 7, it is characterized in that, two these first buckle structures are arranged at the same sidewall of upper frame body, two first buckle structures then are arranged on the opposite side wall of above-mentioned two these first buckle structure place sidewalls in addition, and four corresponding respectively four these first buckle structures of this second buckle structure are with on the sidewall that is arranged at lower frame body respectively.

9. fan frame as claimed in claim 7, it is characterized in that, four these first buckle structures are arranged at respectively on four sidewalls of upper frame body, and four corresponding respectively four these first buckle structures of this second buckle structure are with on four sidewalls that are arranged at lower frame body respectively.

10. as claim 6 or 7 described fan frames, it is characterized in that this first buckle structure has a fastening hole, this second buckle structure has a hook part, and this hook part is fastened in this fastening hole, makes this upper frame body and this lower frame body combination.

11. fan frame as claimed in claim 1, it is characterized in that, this upper frame body has at least one first screw and runs through structure, this lower frame body has at least one correspondence and runs through structure in second screw that this first screw runs through structure, wears this first screw by screw and runs through structure and this second screw and run through structure this upper frame body and this lower frame body are combined closely.

12. fan frame as claimed in claim 11 is characterized in that, this first screw runs through in the hollow part that structure is arranged at this upper frame body, and this second screw runs through between the end angle that structure is provided with the periphery of this exhaust outlet and this lower frame body.