CN202579302U

CN202579302U - Fan blade structure

Info

Publication number: CN202579302U
Application number: CN 201220080329
Authority: CN
Inventors: 王福荫; 张正儒
Original assignee: Auras Technology Co Ltd
Current assignee: Auras Technology Co Ltd
Priority date: 2012-03-06
Filing date: 2012-03-06
Publication date: 2012-12-05
Anticipated expiration: 2022-03-06

Abstract

A fan blade structure comprises a hub and a plurality of blades, wherein the hub is divided into a central part and a side wall which is annularly arranged at the central part, in addition, each blade respectively defines a connecting part and a blade body with a wind receiving surface and a leeward surface, the blade body forms a curvature towards the wind receiving surface, each blade sequentially extends outwards from the outer surface of the side wall in an inclined mode, each blade forms a rib body together from the wind receiving surface and the connecting part, and the rib body extends to the connecting part and the leeward surface of another adjacent blade, so that the strength of each blade when being windy can be enhanced by the rib body connected among the blades, the bending curvature of the blade after being windy is reduced, and the static pressure effect is effectively improved.

Description

Blade structure

Technical field

The utility model relates to a kind of flabellum, refers to that especially a kind of shaft of rib reinforcement blade that utilizes is to promote the blade structure that the static pressure effect strengthens radiating efficiency simultaneously.

Background technique

Along with the development of electronic industry, the performance of electrical assembly promotes rapidly in recent years, and calculation process speed is more and more fast; And the arithmetic speed of its inside chip group constantly promotes, and number of chips also constantly increases, and the also corresponding increase of heat that aforementioned chip is distributed when work; If these thermals source are not distributed in real time,, the calculation process speed of electrical assembly is reduced with the performance that greatly influences electrical assembly; And along with the continuous accumulation of heat; Also possibly burn electrical assembly, therefore heat radiation has become one of important topic of electrical assembly, is to be common method and utilize radiation fan as sink.General being seen radiation fan is mainly processed with plastic material; See also Fig. 1, Fig. 2 and shown in Figure 3, be all general conventional plastic fan (as: dull and stereotyped blade fan, half dull and stereotyped blade fan, quant type fan), the fan 1 of this kind conventional plastic material mainly includes wheel hub 10 and blade 12; Its blade 12 extensions are arranged at this wheel hub 10 sides; And its wheel hub 10 and blade 12 are via plastic materials one ejection formation, and the air quantity that its blade 12 formed external diameter sizes influence its radiation fan generation is big or small, but the intensity that the blade 12 after its moulding can bear is lower; Consult Fig. 4; Be the phase diagram after using fan blade stressed, when increasing the external diameter of blade 12, easily because of its strength deficiency; And then cause blade 12 fractures or the phenomenon of bending, and its plastic blade 12 also ruptures in wheel hub 10 because of clashing into or pushing easily.

Therefore, how to solve the problem and the disappearance of above-mentioned usefulness, the designer who is the utility model desires most ardently the direction place person that research improves with the relevant manufacturer that is engaged in the industry.

Summary of the invention

The utility model technical problem to be solved is to the existing technology deficiency, to provide a kind of and can promote the blade structure that the static pressure effect strengthens radiating efficiency simultaneously.

For solving the problems of the technologies described above, the technological scheme that the utility model adopted is: a kind of blade structure, and it comprises: a wheel hub, it is divided into the sidewall that a central part and is located on this central part; And most blades; Respectively this blade comprises that a junction and has the lamellar body of wind-receiving face and lee face; This lamellar body forms a curvature towards this wind-receiving face; Aforementioned each blade is stretched out with the inclination mode by the outer surface of this sidewall in regular turn, wherein form a shaft of rib in each blade jointly by this wind-receiving face and this joint, and this shaft of rib then extends to this joint and this lee face of another adjacent blades.

Further being improved to of the utility model, this shaft of rib thickness between each blade is greater than the thickness that is positioned at this shaft of rib on the blade.

Further being improved to of the utility model, this shaft of rib is formed respectively and is extended towards this joint by the wind-receiving face of this lamellar body and the central position of lee face.

Further being improved to of the utility model, this curvature is between 15 ° to 30 °.

Further being improved to of the utility model, this blade is the quant aspect.

Compared with prior art, the beneficial effect that the utility model had is: the intensity when the utility model utilizes each other the shaft of rib that links to each other between the blade can strengthen each blade wind-engaging lets the curvature reduction that bends behind the blade wind-engaging, and then effectively promotes the static pressure effect.The utility model forms shaft of rib at the wind-receiving face of each blade and lee face, can the reinforcement blade structure, and make its not easy-rupturing.

Description of drawings

Fig. 1 is for use dull and stereotyped blade fan.

Fig. 2 is for use half dull and stereotyped blade fan.

Fig. 3 is for use quant type fan.

Fig. 4 is the phase diagram after using fan blade stressed.

Fig. 5 is the schematic perspective view of the utility model preferred embodiment.

Fig. 6 is the decomposing schematic representation of the utility model preferred embodiment.

Fig. 7 is the action schematic representation of the utility model preferred embodiment.

Fig. 8 is the phase diagram of the fan blade of the utility model preferred embodiment after stressed.

Fig. 9 is the utility model flabellum and aforementioned three kinds of known fan measured curve comparison sheets.

Label declaration:

Fan 1;

Wheel hub 10;

Blade 12;

Blade structure 2;

Wheel hub 20;

Central part 200;

Sidewall 202;

Blade 22;

Joint 220;

Wind-receiving face 2220;

Lee face 2222;

Lamellar body 222;

Shaft of rib 24.

Embodiment

For reaching above-mentioned purpose and effect, technological means that the utility model adopted and structure are drawn now and are explained in detail that with regard to the utility model preferred embodiment its characteristic and function are following, in order to understanding fully.

See also shown in Figure 5 and Fig. 6; Schematic perspective view and decomposing schematic representation for the utility model preferred embodiment; Find out that by knowing among the figure the utility model is a kind of blade structure 2; Comprise: a wheel hub 20, it is divided into the sidewall 202 that a central part 200 and is located on this central part 200; And most blades 22 (being the quant aspect); Respectively this blade 22 comprises that a junction 220 and has the lamellar body 222 of wind-receiving face 2220 and lee face 2222; 222 of this lamellar bodies form curvatures (between 15 ° to 30 °) towards this wind-receiving face 2220; Aforesaid each blade 22 is stretched out with the inclination mode by the outer surface of this sidewall 202 in regular turn; Wherein jointly form a shaft of rib 24, and this shaft of rib 24 extends to this joint 220 and this lee face 2222 of another adjacent this blade 22 by this wind-receiving face 2220 and this joint 220 in each blade 22.

Wherein at these shaft of rib 24 thickness between this blade 22 respectively greater than the thickness that is positioned at this shaft of rib 24 on the blade 22.

Wherein this shaft of rib 24 is formed respectively and is extended towards this joint 220 by this wind-receiving face 2220 of this lamellar body 222 and the central position of this lee face 2222.

By said structure, composition design, explain as follows with regard to the usage operation situation of the utility model now, please cooperate simultaneously and consult Fig. 7 and shown in Figure 8; For the phase diagram after stressed of the action schematic representation of the utility model preferred embodiment and fan blade, find out by knowing among the figure, for driving blade structure 2 runnings; Need earlier drive unit 3 to be installed in the central part 200 of wheel hub 20, then again blade structure 2 is articulated in the fan hub 4, when blade structure 2 is activated device 3 drives; 20 of wheel hubs turn round, and the most blades 22 that are positioned on wheel hub 20 sidewalls 202 also rotate simultaneously, because of lamellar body 222 forms a curvature towards wind-receiving face 2220; So 2220 pairs of wind of wind-receiving face also produce relative resistance; Though this resistance has increased the radiating effect to air, increased the impaired probability of blade 22 also, in order to overcome this problem; The utility model is formed with shaft of rib 24 respectively on the two sides of blade 22 (wind-receiving face 2220 and lee face 2222); Because this shaft of rib 24 links between two blades 22, and at shaft of rib 24 thickness between this blade 22 respectively greater than the thickness that is positioned at the shaft of rib 24 on the blade 22, therefore significantly strengthen the intensity of blade 22 itself; Even therefore the area of lamellar body 222 increases or the radian increase; The situations such as blade 22 or wheel hub 20 fractures that also do not have take place, and the more important thing is, the intensity when utilizing the shaft of rib 24 that links to each other between the blade 22 each other can strengthen each blade 22 wind-engaging; Let the curvature reduction that bends behind blade 22 wind-engagings, and then effectively promote the effect of static pressure.

In Fig. 9, be the utility model flabellum and known flabellum measured curve comparison sheet, lateral coordinates among the figure (CFM) representative to be air quantity represent with along slope coordinate (mmAq) is static pressure.The flabellum of the utility model shows (is main with solid line) according to experimental result, and when air quantity was 11.85CFM (cubic foot per minute), flabellum then produced 8.85 static pressure (mmAq).

In Figure 1, the flat-leaf fan presented the results of their experiments show (in dotted-based), when the air volume is 11.30CFM (cubic feet per minute), the fan static pressure is generated 7.94 (mmAq), in Figure 2 presents a semi flat-leaf fan the experimental results show that (center-based), when the air volume is 11.85CFM (cubic feet per minute), the fan static pressure generated 7.29 (mmAq), another in Fig. 3 presented in the paddle-type fan the experimental results show that (center-based), when the air volume is 11.85CFM (cubic feet per minute), the fan static pressure generated 7.29 (mmAq).

Experiment is learnt thus; When known various fans reached a predetermined air quantity (11.30 CFM-12.24 CFM), its getable static pressure all had only 7.29 mmAq-7.95 mmAq, and its main because flabellum receives bigger air quantity flabellum in period and is prone to situation of bending taking place or rupturing; Also therefore on the utilization efficiency of fan, can't reach best heat extraction usefulness; Review, when the fan of the utility model reached a predetermined air quantity (11.85 CFM), its resulting static pressure but reached 8.85 mmAq; Far above known 7.95 the highest mmAq; This can represent the fan of the utility model, because of the effect of having utilized the shaft of rib structure to let blade obtain reinforcement is difficult for the situation that generation is ruptured, also therefore lets the fan of the utility model can obtain best heat extraction usefulness.

Only; The above is merely the preferred embodiment of the utility model; Non-so promptly limit to the claim of the utility model; So the simple and easy modification and the equivalent structure that use the utility model specification and graphic content to do such as change, and all should in like manner be contained in the claim of the utility model, close and give Chen Ming.

In sum, the blade structure of the utility model can reach its effect and purpose really when using, so the utility model really is the excellent model utility of a practicability, for meeting the application important document of utility model patent, file an application in the whence in accordance with the law.

Claims

1. A fan blade structure, characterized in that it includes: a hub, which is divided into a central part and a ring located on the side wall of the central part; and a plurality of blades, each of which includes a connecting part and a wind-receiving The sheet body on the side wall and the leeward side, the sheet body forms a curvature toward the wind-receiving side, and the aforementioned blades extend outward in an inclined manner from the outer surface of the side wall in sequence, wherein each blade extends from the wind-receiving surface and The connecting portion jointly forms a rib, and the rib extends to the connecting portion and the leeward surface of another adjacent blade.

2 . The fan blade structure according to claim 1 , wherein the thickness of the ribs located between the blades is greater than the thickness of the ribs located on the blades. 3 .

3 . The fan blade structure according to claim 1 , wherein the ribs are respectively formed at the central positions of the wind receiving side and the leeward side of the sheet body and extend toward the connecting portion. 4 .

4. The fan blade structure according to claim 1, wherein the curvature is between 15° and 30°. the