CN200982308Y - Fan - Google Patents

Abstract

A fan comprises an impeller and a fan frame, wherein one side center of the fan frame is provided with an impeller seat pivotally connected with the impeller, the side with the impeller seat is provided with an air outlet to envisage a heating assembly, the other side relative to the air outlet is provided with an air inlet for air inflowing, the impeller is provided with a hub whose peripheral ring portion radically radiates and extends a plurality of a first flabella and a plurality of protruding portions which are open spread arranged between every two first flabella to guide air flow freely and smoothly passing in and out the fan, thereby the heat dissipation effect of the fan can be greatly improved.

Description

Fan

Technical field

The utility model relates to a kind of fan, particularly a kind of fan that is used on the radiator.

Background technique

See also Fig. 1, Fig. 2, be common existing fan, it comprises an impeller 11 and a fan frame 12, above-mentioned impeller 11 has a wheel hub 111, described wheel hub 111 outer periphery are extended a plurality of flabellums 112 (as shown in Figure 3), above-mentioned fan frame 12 is a sealing surrounding wall, one side of described fan frame 12 defines an intake grill 123 supplied gas and flows to, opposite side with respect to intake grill 123 defines the outflow of an exhaust outlet 124 supplied gas, one side center of described exhaust outlet 124 is provided with an impeller seat 121 and articulates above-mentioned impeller 11, described impeller seat 121 joins with a plurality of ribs 122 and fan frame 12, the exhaust outlet 124 of above-mentioned fan frame 12 is over against a heating element 13, run through the fan set at least one perforation 125 in frame 12 edges with at least one screw 126, impeller 11 and fan frame 12 are attached on the heating element 13.

Yet on using, above-mentioned technology have its problem to exist, because wheel hub 111 there is no the design of other drainage except flabellum 112, so when air-flow when intake grill 123 flows into fans, the part air-flow can flow between two flabellums 112 and flow everywhere along wheel hub 111 surfaces, influenced by the flow resistance on wheel hub 111 surfaces, the blast of air flow direction exhaust outlet 124 reduces gradually, and easily the low pressure place below wheel hub 111 produces backflow, influences the effect of fan heat radiation.

So because every shortcoming that above-mentioned existing structure is derived, the inventor of this case exhausts its intelligence then, to be engaged in described industry experience for many years, concentrate on studies and innovated improvement, successfully this part fan case is finished in research and development finally, is the model utility that a tool effect is promoted in fact.

Summary of the invention

The purpose of this utility model is providing a kind of fan, and its wheel hub has the function of steering flow.

In order to achieve the above object, the utility model comprises an impeller and a fan frame, one side center of described fan frame is provided with an impeller seat and articulates above-mentioned impeller, a side that is provided with the impeller seat defines an exhaust outlet over against a heating element, opposite side with respect to exhaust outlet defines an intake grill, above-mentioned impeller has a wheel hub, described wheel hub has an end face and a ring portion perpendicular to described end face, a plurality of first flabellums and a plurality of protuberance are extended in the radiation of described ring portion outer periphery, described protuberance compartment of terrain is arranged between per two first flabellums, flow out fan swimmingly with steering flow, increase the blast at exhaust outlet place, promote the radiating effect of fan.

The advantage that the utlity model has: by said structure, when air-flow when intake grill flows into fan, described protuberance can guide portion near or along the wheel hub airflow flowing, make air-flow can directly flow out fan, and blast can not reduce, and improves the radiating effect of fan.

Description of drawings

Fig. 1 is existing fan three-dimensional exploded view;

Fig. 2 is existing fan three-dimensional combination figure;

Fig. 3 is existing impeller top view;

Fig. 4 is this novel fan three-dimensional exploded view;

Fig. 5 is this novel fan three-dimensional combination figure;

Fig. 6 is this novel impeller top view;

Fig. 7 is this novel impeller side view.

Description of reference numerals: 11 impellers; 111 wheel hubs; 112 flabellums; 12 fan frames; 121 impeller seats; 122 ribs; 123 intake grills; 124 exhaust outlets; 125 perforation; 126 screws; 13 heating elements; 21 impellers; 211 wheel hubs; 2111 end faces; 2112 ring portions; 212 first flabellums; 213 protuberances; 22 fan frames; 221 impeller seats; 222 ribs; 223 intake grills; 224 exhaust outlets; 225 perforation; 226 fixing-assemblys; 23 heating elements.

Embodiment

For other advantage of the present utility model, purpose, technical characteristics and effect, be can be, and be tending towards understanding by the detailed description of the graphic this case preferred embodiment of following cooperation:

See also Fig. 4, Fig. 5, be preferred embodiment of the present utility model, it comprises an impeller 21 and a fan frame 22, above-mentioned fan frame 22 is a surrounding wall, one side center of described fan frame 22 is provided with an impeller seat 221 and is connected to fan frame 22 inwalls with a plurality of ribs 222, and defining an exhaust outlet 224 supplied gas by fan frame 22 inwalls and impeller seat 221 peripheries flows out, opposite side with respect to exhaust outlet 224 defines the inflow of an intake grill 223 supplied gas, described exhaust outlet 224 runs through the set at least one perforation 225 in fan frame 22 edges with at least one fixing-assembly 226 impeller 21 and fan frame 22 is attached on the heating element 23 over against a heating element 23.

Above-mentioned impeller 21 has a wheel hub 211, described wheel hub 211 comprises an end face 2111 and a ring portion 2112 perpendicular to described end face 2111, described end face 2111 inboard centers are provided with 221 li of the rotating impeller seats that is articulated in fan frame 22 in an axle center (figure do not show), a plurality of first flabellums 212 are extended in the outer periphery radiation of above-mentioned ring portion 2112, and extended length is than a plurality of protuberances 213 (as shown in Figure 6) of first flabellum, 212 weak points, described protuberance 213 compartment of terrains are arranged between per two first flabellums 212, and the arrangement of described protuberance 213 and first flabellum 212 identical (as shown in Figure 7).

The shape of above-mentioned protuberance 213 can also 212 identical with first flabellum (not having diagram).

When air-flow when intake grill 223 flows into fans, described protuberance 213 can guide portions near or along wheel hub 211 airflow flowing, make air-flow can directly flow out fan, and blast can not reduce, improve the radiating effect of fan.

The above is only for the preferred embodiment of this case, be not in order to restriction the utility model, if comply with the change that conception of the present utility model is done, in not breaking away from the utility model spirit scope, for example: for configuration or arrange in addition conversion of kenel,, modify and use for various variations, the equivalent action that produces all should be included in the interest field of this case.

Claims (5)

1, a kind of fan is characterized in that, comprising:

One impeller is to have a wheel hub, and described wheel hub has an end face and a ring portion perpendicular to described end face, and a plurality of first flabellums and a plurality of protuberance are extended in the radiation of described ring portion outer periphery, and described protuberance compartment of terrain is arranged between per two first flabellums;

One fan frame, one side center are provided with an impeller seat for above-mentioned impeller pivot joint.

2, fan as claimed in claim 1 is characterized in that: described impeller seat connects described fan frame inwall with a plurality of ribs.

3, fan as claimed in claim 1 is characterized in that: the arrangement of described protuberance is identical with described first flabellum.

4, fan as claimed in claim 1 is characterized in that: more described first flabellum of the extended length of described protuberance is short.

5, fan as claimed in claim 1 is characterized in that: the shape of described protuberance is identical with described first flabellum.

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