CN100404879C - Fan mechanism - Google Patents

Abstract

The present invention discloses a fan mechanism which comprises a fan frame of which the area is larger than that of a heat generating subassembly, and a fan wheel, wherein the fan wheel is pivoted in the fan frame, one side of the fan frame shrinks to center and extends outwards to form a gradually shrinking part, and an air outlet of which the area is equal to or smaller than that of the heat generating subassembly can be formed; further, the fan frame of which the area is larger that of the heat generating subassembly, and the fan wheel are arranged on the heat generating subassembly, and a great amount of liquid flows to the heat generating subassembly in a concentrated mode by the gradually shrinking part. Thus, radiation effect is greatly enhanced; the present invention has the characteristics that noise is eliminated, and pressure relief is prevented.

Description

Fan

Technical field

The present invention relates to a kind of fan, the structure of fan frame on particularly a kind of radiator.

Background technique

When the electrical assembly that generates heat is carried out traditional radiating treatment, general processing mode is that group is provided with a heating element on this electrical assembly, and group is provided with a radiation fan on this heating element, the heat of electrical assembly is got rid of in acceleration to produce distinguished and admirable, but fixed constraints because of its production specification, when situation that need to strengthen heat radiation is arranged, always need to change whole group heating element and radiation fan, the bigger radiation fan of replacement that can't be directly independent dispelling the heat, and causes inconvenience and puzzlement in the application on former heating element.

See also Fig. 1 to Fig. 3, comprise a heating element 11 and a radiation fan 12, wherein these radiation fan 12 areas are big than heating element 11 areas, for radiation fan 12 is connected on the heating element 11, be provided with a switching device 13 between the two, and the area of this switching device 13 wind inlets 131 sides cooperation radiation fan 12, to be connected with radiation fan 12, another exhaust outlet 132 sides cooperate heating element 11, to be arranged on the heating element 11.

When radiation fan 12 starts, draw fluid is entered by intake grill 131 sides of switching device 13, blow to the heating element 11 of exhaust outlet 132 sides of switching device 13 again, to produce heat radiation effectiveness, but this a kind of mode of operation has it to implement the problem that goes up, in the process of using switching device 13, use the affixed mode of gluing or snapping etc. because of need, program is numerous and diverse, make heating element 11, radiation fan 12, indirect group of switching device 13 because of being difficult for firmly easily producing slot, cause fluid to overflow by slot, do not flow to just significantly loss on the heating element 11 as yet at fluid, and then reduce its radiating efficiency, and fail to reach the distinguished and admirable purpose of delivering to than small size heating element 11 that big radiation fan 12 is produced.

Insecure because of the winding of 13 of heating elements 11, radiation fan 12, switching device again, make when radiation fan 12 rotates, not only because of the noise of vibration generation own, the while is also caused the resonance with switching device 13 and switching device 13 and heating element 11, and then produces bigger noise.

Summary of the invention

Main purpose of the present invention provides a kind of will being arranged on the radiator greater than the fan frame and the impeller of radiator area, so that effectively increase the fan of wind flow.

Secondary objective of the present invention provides a kind of fan that abates the noise.

Another secondary objective of the present invention provides a kind of fan that prevents pressure release.

The syllabus of another time more of the present invention provides a kind of fan that increases blast.

Above-mentioned purpose of the present invention is achieved in that a kind of fan, comprises a fan frame and an impeller, is connected on the heating element, and wherein this fan frame has into and out of the air port, and this impeller is mounted in the fan frame;

It is characterized in that: the intake grill of this fan frame has extended to form convergent portion towards the direction of exhaust outlet to the center convergent, makes a large amount of fluids via flowing on the heating element in this convergent portion complete set.

Characteristic on above-mentioned purpose of the present invention and structure thereof and the function will be illustrated according to preferred embodiment shown in the drawings.

Description of drawings

Fig. 1 is the perspective exploded view of traditional heat-dissipating device;

Fig. 2 is another visual angle perspective exploded view of traditional heat-dissipating device;

Fig. 3 is the solid combination schematic representation of traditional heat-dissipating device;

Fig. 4 is the perspective exploded view of first preferred embodiment of the present invention;

Fig. 5 is the solid combination schematic representation of first preferred embodiment of the present invention;

Fig. 6 is the generalized section of first preferred embodiment of the present invention;

Fig. 7 establishes the generalized section of another impeller aspect for the group of first preferred embodiment of the present invention;

Fig. 8 is the generalized section of second preferred embodiment of the present invention;

Fig. 9 is the perspective exploded view of the 3rd preferred embodiment of the present invention;

Figure 10 is the solid combination schematic representation of the 3rd preferred embodiment of the present invention;

Figure 11 is the generalized section of the 3rd preferred embodiment of the present invention.

Description of reference numerals: 11 heating elements; 12 radiation fans; 13 switching devices; 131 wind inlets; 132 exhaust outlets; 21 impellers; 22 fan frames; 221 convergent portions; 222 exhaust outlets; 223 intake grills; 224 hub seats; 24 heating elements; 41 impellers; 42 fan frames; 421 flights; 422 exhaust outlets; 423 intake grills; 424 hub seats; 44 heating elements; 51 impellers; 52 fan frames; 521 convergent portions; 522 exhaust outlets; 523 intake grills; 524 hub seats; 525 helix structures; 54 heating elements.

Embodiment

The invention provides a kind of fan, see also Fig. 4, Fig. 5, preferred embodiment of the present invention shown in Figure 6, as shown in the figure, at least include a fan frame 22 and an impeller 21, wherein a side appropriate location of this fan frame 22 is formed with convergent portion 221 towards the inside of opposite side direction to center extension convergent, make this convergent portion 221 constitute the exhaust outlet 222 that waits greater than heating element 24 areas, and a side tool of fan frame 22 is provided with intake grill 223, be provided with hub seat 224 in it in order to the impeller 21 that is pivoted, the exhaust outlet 222 that to fan frame 22 again is arranged on the heating element 24, and then this fan frame 22 and impeller 21 greater than heating element 24 areas is arranged on the heating element 24.

When impeller 21 rotates, when the guiding fluid enters and blows to the heating element 24 of exhaust outlet 222 via intake grill 223, by exhaust outlet 222 air-flow is concentrated and to be acted on the heating element 24, make it significantly to promote the effect of heat radiation, and the design of this convergent portion 221 has the function of water conservancy diversion, to abate the noise and to prevent pressure release, promptly distinguished and admirable adverse current.

See also Fig. 7, the profile of impeller 21 can cooperate the shape of the convergent portion 221 that fans frame 22 and offer and extend in the exhaust outlet 222, and the volume of impeller 21 is increased, and advances to increase the wind flow that radiation fan was produced, the function of promoting heat radiation.

Please cooperate and consult second preferred embodiment of the present invention shown in Figure 8, its overall structure is roughly identical with last embodiment with function, do not repeat them here, and its difference is in a convergent portion 421 of this fan frame 42 and is flight, exhaust outlet that this convergent portion 421 constitutes 422 areas and heating element 44 etc. are big, concentrating wind flow that impeller 41 produced to heating element 44, so promote heat radiation effect, abate the noise and prevent pressure release, promptly distinguished and admirable adverse current.

Please consult Fig. 9, Figure 10, the 3rd preferred embodiment of the present invention shown in Figure 11 again, wherein convergent portion 521 inboards of this fan frame 52 are set as helix structure 525, make it to such an extent that the tool spiral air flow increases blast and more can focused airflow act on the heating element 54.

The above only is preferable feasible embodiment of the present invention, and the variation that above-mentioned method, shape, structure, the device of all the present invention of utilization done all should be contained within protection scope of the present invention.

Claims (2)

1. a fan comprises a fan frame and an impeller, is connected on the heating element, and wherein this fan frame has into and out of the air port, and this impeller is mounted in the fan frame;

It is characterized in that: the intake grill of this fan frame has extended to form convergent portion towards the direction of exhaust outlet to the center convergent, makes a large amount of fluids via flowing on the heating element in this convergent portion complete set, and wherein this convergent portion inboard is provided with helix structure to increase liquid speed.

2. fan as claimed in claim 1 is characterized in that: this exhaust outlet and heating element area etc. are big.

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