CN1699759A

CN1699759A - Fan

Info

Publication number: CN1699759A
Application number: CN 200410043547
Authority: CN
Inventors: 吴修维; 程怡菱; 黄国祯; 蔡尚谚
Original assignee: Delta Optoelectronics Inc
Current assignee: Delta Optoelectronics Inc
Priority date: 2004-05-17
Filing date: 2004-05-17
Publication date: 2005-11-23
Anticipated expiration: 2024-05-17
Also published as: CN100357609C

Abstract

Disclosed is a fan, which comprises a hub, a ring rib and a plurality of flat blades. The ring rib is arranged around the hub by at least a link arm without contacting the hub. The flat vanes are arranged on the ring rib, each action plane of the flat vane contacts tangentially with a same circle.

Description

Fan

Technical field

The invention relates to a kind of fan, particularly about the fan of a kind of low windage, low noise, high running efficiency.

Background technique

Fig. 1 is the schematic representation of existing fan 100.Fan 100 is to reach the flabellum 104 that directly is linked to hub portion 102 peripheries by hub portion 102 to be constituted, and wherein the windward side 106 of flabellum 104 is tangent with hub portion 102 edges.When the number of flabellum 104 was too much, the spacing between the flabellum 104 can be dwindled, and the windage of fan 100, noise can significantly be increased, and then increased the heat that is produced when fan 100 turns round.Otherwise when the number of flabellum 104 was very few, the gap between the flabellum 104 can increase, yet because of the active area of fan 100 reduces, caused the working efficiency of fan 100 not good.

Existing fan 100 is problems such as balance working efficiency and windage, generally all adopts the flabellum 104 about 13, to obtain the fan 100 that working efficiency is average and windage is little.

Yet, because existing electrical assembly is towards miniaturization, precise treatment development, under this trend, the heat that is produced during the electrical assembly running also significantly increases thereupon, therefore, the radiating efficiency of existing fan 100 is not enough to aforementioned heat is removed fully, and problems such as electrical assembly is overheated take place.

Summary of the invention

Therefore, for addressing the above problem, the objective of the invention is to propose a kind of fan that can significantly improve radiating effect.

Another object of the present invention is to propose a kind of fan that can significantly reduce windage, noise content.

A further object of the present invention is to propose a kind of fan that can significantly increase work efficiency.

For this reason, the invention provides a kind of fan, comprise hub portion, ring rib, a plurality of flat vanes.Wherein encircling rib is to be provided with and not contact with hub portion around hub portion periphery, is linked to hub portion periphery via at least one link arm.Flat vanes is located on the ring rib, and the acting surface line stretcher and the same circle of each flat vanes are tangent.

The shape of the acting surface of aforementioned fan can be for rectangle, a side in the mode of section difference less than the polygonal of opposite side, the polygonal of gradually opening, a side with the mode of hypotenuse section difference polygonal less than opposite side.The sectional shape of ring rib can be for rectangle, towards outside tapered shape, towards the center tapered shape, gradually open tapered shape again.The sectional shape of link arm can be the polygonal at rectangle, drops, polygonal, the slick and sly angle of tool.

In addition, the form of aforementioned fan can be axial flow fan, side-blown fan.Flat vanes does not contact with hub portion.

In sum, fan of the present invention is because the number that is provided with of flabellum significantly increases, so the active area of fan significantly increases, and then significantly increases the working efficiency and the radiating effect of fan.

Moreover, because fan of the present invention has the ring rib and the link arm of particular form, thereby the windage when significantly reducing fan running and increase the effect of flabellum practical function area, and then the noise content can significantly reduce fan running the time.

For further specifying above-mentioned purpose of the present invention, structural feature and effect, the present invention is described in detail below with reference to accompanying drawing.

Description of drawings

Fig. 1 is the schematic representation of existing fan.

Fig. 2 is the schematic representation that illustrates the fan of a preferred embodiment of the present invention.

Fig. 3 is the schematic cross section that illustrates the ring rib example of fan of the present invention.

Fig. 4 is the schematic cross section that illustrates the link arm example of fan of the present invention.

Fig. 5 is the schematic representation that illustrates the acting surface example of fan of the present invention.

Embodiment

Fig. 2 is the schematic representation that illustrates the fan 200 of a preferred embodiment of the present invention.Fan 200 is made of hub portion 202, ring rib 206, link arm 208, flabellum 204.Fan 200 for example is axial flow fan, side-blowing fan.

Hub portion 202 is the cap-like structure body, and hub portion 202 inside accommodate stator structure, and hub portion 202 can rotate along with the changes of magnetic field of stator structure.The material of hub portion 202 for example is metal, plastics.

Ring rib 206 is to be located in hub portion 202 peripheries, is connected with hub portion 202 via link arm 208.Ring rib 206 for example be cross section shown in Figure 3 be rectangle ring rib 206a, cross section for towards the ring rib 206b of outside convergent, cross section for towards the ring rib 206c of central side convergent, cross section for gradually opening again the ring rib 206d of convergent.When the section shape of ring rib 206 when having thickness difference, the thicker part of ring rib 206 thickness can improve ring rib 206 and be subjected to stress, and can strengthen the axial affixed intensity of encircling 204 of rib 206 and aftermentioned flabellums.And, the part of ring rib 206 side thinner thicknesses, not only the active area of flabellum 204 can be under the situation that reduces axial affixed intensity hardly, increased, and the radially affixed intensity of 204 of ring rib 206 and flabellums can be strengthened, even the effect of enhancing fan wind-guiding.The material of ring rib 202 for example is metal, plastics.

Link arm 208 is between hub portion 202 and ring rib 206, and the form of link arm 208, quantity, size are regardless of, as long as be enough to make ring rib 206 around hub portion 202 peripheries and can not break away from.The cross section of link arm 208 for example is that cross section shown in Figure 4 is that link arm 208a, the cross section of rectangle is that drop-shaped link arm 208b, cross section are that polygonal link arm 208c, cross section are that link arm 208d, the cross section at polygonal and the slick and sly angle of tool is the link arm 208e of sidepiece 214 maximum ga(u)ges in two ends greater than the form of intermediate portion 216 thickness.Wherein distolateral 214 of link arm 208e also can for the form of gradually opening again convergent when the one or both sides of link arm 208 are convergent, link arm 208 can provide the effect of wind-guiding, and then the windage can reduce fan 200 runnings the time.When the both sides of link arm 208 maximum ga(u)ge during, can further reduce the windage of link arm 208 greater than intermediate portion thickness.In addition, the material of link arm 208 for example is metal, plastics.

Flabellum 204 is linked on the ring rib 206, and via ring rib 206 and around hub portion 202 peripheries.The line stretcher of the acting surface 210 of flabellum 204 is preferably and is tangential on the same circle, and this moment, flabellum 204 was to be minimum with the resistance of air, thereby can improve the water conservancy diversion effect of fan 200 when fan 200 runnings.The acting surface 210 of flabellum 204 for example is a plane structure, and at this moment, the practical function area of acting surface 210 is maximum, and can significantly improve the working efficiency of fan 200.Acting surface 210 for example be rectangle acting surface 210a, a side shown in Figure 5 differ from section 212 mode less than polygonal acting surface 210b, the 210d of opposite side, the polygonal acting surface 210c that gradually opens, a side with the mode of hypotenuse section difference 212a

polygonal acting surface

210e, 210f less than opposite side.

In addition, because flabellum 204 is the modes that are tangential on same circle with extension, be connected on the ring rib 206 but not directly be connected with hub portion 202, even so the line stretcher of flabellum 204 interlaced, 204 of flabellums still have enough spacings, can be maintained at the state of low windage.In view of the above, the number of flabellum 204 can change easily along with the size of the circle that sets, and then the number of flabellum 204 can be easily surpasses the restriction of existing 13 flabellums, even reaches the degree of 16～20 flabellums.Because the number of flabellum 204 is more, thereby the active area during fan 200 runnings can significantly increase thereupon, and then significantly increases the working efficiency of fan 200.

Though the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, under the situation that does not break away from spirit of the present invention, also can make the variation or the replacement of various equivalences, therefore, as long as in connotation scope of the present invention in the scope to the variation of the foregoing description, claims that modification all will drop on the application.

Claims

1. fan comprises:

One hub portion;

One ring rib, be provided with and do not contact around this hub portion periphery with this hub portion, be linked to this hub portion periphery via at least one link arm, and the sectional shape of this ring rib system is selected from rectangle, towards outside tapered shape, towards the center tapered shape, gradually open again tapered shape one of them; And

Several flat vanes, be located on this ring rib, the one acting surface line stretcher and the same circle of each those flat vanes are tangent, and the shape of this acting surface be selected from rectangle, a side with the mode of section difference less than the polygonal of opposite side, the polygonal of gradually opening, a side with the mode of hypotenuse section difference less than the polygonal of opposite side one of them.

2. fan comprises:

One hub portion;

One ring rib, be provided with and do not contact around this hub portion periphery with this hub portion, be linked to this hub portion periphery via at least one link arm, and the sectional shape of this ring rib is selected from rectangle, towards outside tapered shape, towards the center tapered shape, gradually open again tapered shape one of them, the polygonal, two ends sidepiece maximum ga(u)ge that the sectional shape of this link arm is selected from the slick and sly angle of rectangle, drops, polygonal, tool greater than the shape of the form of intermediate portion thickness one of them; And

Several flat vanes are located on this ring rib, and an acting surface line stretcher and the same circle of each those flat vanes are tangent.

3. fan comprises:

One hub portion;

One ring rib, be provided with and do not contact around this hub portion periphery with this hub portion, be linked to this hub portion periphery via at least one link arm, and the sectional shape of this link arm polygonal, two ends sidepiece maximum ga(u)ge that are selected from the slick and sly angle of rectangle, drops, polygonal, tool greater than the shape of the form of intermediate portion thickness one of them; And

4. fan comprises:

One hub portion;

One ring rib is provided with and does not contact with this hub portion around this hub portion periphery, is linked to this hub portion periphery via at least one link arm; And

5. fan as claimed in claim 4, the shape that it is characterized in that this acting surface be selected from rectangle, a side with the mode of section difference less than the polygonal of opposite side, the polygonal of gradually opening, a side with the mode of hypotenuse section difference less than the polygonal of opposite side one of them.

6. fan as claimed in claim 4, it is characterized in that the sectional shape of this ring rib is selected from rectangle, towards outside tapered shape, towards the center tapered shape, gradually open again tapered shape one of them.

7. the polygonal, two ends sidepiece maximum ga(u)ge that fan as claimed in claim 4, the sectional shape that it is characterized in that this link arm are selected from rectangle, drops, polygonal, the slick and sly angle of tool greater than the shape of the form of intermediate portion thickness one of them.

8. fan as claimed in claim 7 is characterized in that this distolateral portion is for gradually opening the form of convergent again.

9. fan as claimed in claim 4 is characterized in that the form of this fan is selected from axial flow fan, side-blown is fanned one of them.

10. fan as claimed in claim 4 is characterized in that this flat vanes does not contact with this hub portion.