CN201255129Y - Self-generating cooling fan - Google Patents

Abstract

A self-generating cooling fan comprises a shell unit, a fan wheel unit, a driving unit, and a power generation unit; the shell unit comprises a shaft tube and at least one bearing arranged in the shaft tube, the fan wheel unit comprises a shaft rod rotatably extending through the bearing, a hub connected to the shaft rod, and a first magnet ring arranged in the hub; the power generation unit comprises a second magnet ring sleeved on the shaft tube, a second circuit board arranged in the hub, and a plurality of induction coils curledly arranged on the second circuit board, when the fan wheel unit rotates, the second circuit board also rotates, so that the induction coil is induced by the magnetic force of the second magnet ring to generate an induced current.

Description

self-generating cooling fan

【Technical field】

The utility model relates to a heat dissipation fan, in particular to a self-generating heat dissipation fan.

【Background technique】

Referring to Fig. 1, the cooling fan 1 disclosed in Taiwan Patent Publication No. M290267 "Illuminated Cooling Fan" includes a fan base 11, a shaft tube 12 arranged on the fan base 11, a set of shaft tubes arranged on the shaft tube Stator 16 on 12, a rotating shaft 13 that is pivotally arranged in this axle tube 12, and a wheel hub 14 that is arranged on this rotating shaft 13, a magnet ring 17 that is located in this wheel hub 14, and several from this wheel hub 14 Outwardly extending fan blade 10, a generator set 15 is arranged between the hub 14 and the stator 16, and the generator set 15 has a set of fixed seat 151 fixed on the shaft tube 12, a ring set on the fixed The magnetic frame 152 on the seat 151, and an iron core 153 spaced apart from the magnetic frame 152 and arranged on the wheel hub 14, when the stator 16 is energized and excited, generates magnetic repulsion with the magnet ring 17 and then drives the wheel hub 14 to rotate , the iron core 153 rotates relative to the magnetic frame 152 to generate an induced current, thereby achieving the effect of generating electricity.

However, since the generator set 15 is hidden inside the hub 14 and is surrounded by the fixing seat 151, and the fixing seat 151 is additionally provided with a magnetic frame 152 that cooperates with the iron core 153 to generate electricity, therefore, The inner side of the hub 14 must have enough space to accommodate the entire generator set 15, and then the width and height of the hub 14 must be increased, resulting in a relative increase in the overall volume of the cooling fan 1, and when the cooling fan 1 is When it must be applied to the field of small mechanisms, the larger volume will inevitably reduce its installation flexibility, or the area of the fan blade 10 must be sacrificed to reduce the heat dissipation efficiency. Therefore, the general cooling fan 1 still has structural design. Room for improvement.

【Content of utility model】

The purpose of this utility model is to provide a self-generating cooling fan, which can effectively reduce the volume and thickness of the cooling fan.

In order to achieve the above object, the self-generating cooling fan of the present invention includes a housing unit, a fan wheel unit arranged in the housing unit, a driving unit for driving the fan wheel unit to rotate, and a fan wheel unit arranged in the fan wheel unit. The power generation unit inside the wheel unit.

The casing unit includes a base, a shaft tube extending upward from the base, and at least one bearing arranged in the shaft tube.

The fan wheel unit includes a shaft that can rotatably extend through the bearing of the housing unit, a hub connected to the shaft, a first magnet ring disposed in the hub, and several pieces from the periphery of the hub. The fan blade extending radially outward, wherein the hub has a body portion connected to the shaft, a base wall portion extending outward from the body portion, and a ring wall extending downward from the periphery of the base wall portion part, the first magnet ring is arranged around the inner peripheral surface of the ring wall part, and the fan blade is arranged on the outer peripheral surface of the ring wall part.

The drive unit includes a first circuit board sleeved on the shaft tube of the housing unit, a stator ringed outside the shaft tube, and a stator electrically connected to the first circuit board and used to detect the fan wheel The magnetic change sensing element of the first magnet ring of the unit, wherein the stator can be controlled and actuated by the first circuit board.

The power generation unit includes a second magnet ring sleeved on the shaft tube of the housing unit, a second circuit board sleeved on the body part of the hub, and several coils arranged on the second circuit board. And the induction coil spaced apart from the second magnet ring, wherein the induction coil is formed by continuously curling two metal wires in opposite directions to each other, and each metal wire can form many coil turns, and each coil turn are respectively arranged around the centers of the corresponding second circuit boards in a manner of concentric circles.

The effect of the utility model is that by arranging the induction coil on the second circuit board in a curled manner, it can not only generate an induced current through magnetic induction with the second magnet ring, but also utilize its thin design to avoid The increase in the thickness of the cooling fan can effectively reduce the overall volume.

【Description of drawings】

FIG. 1 is a cross-sectional view illustrating the state of Taiwan Patent Publication No. M290267 "radiating cooling fan";

Fig. 2 is a three-dimensional exploded view illustrating a preferred embodiment of the self-generating cooling fan of the present invention;

Fig. 3 is a sectional view illustrating the internal structure of the preferred embodiment;

FIG. 4 is a top view illustrating the appearance of the second circuit board and the induction coil of the preferred embodiment.

【Detailed ways】

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail:

Referring to Fig. 2, the preferred embodiment of the self-generating cooling fan 2 of the utility model includes a housing unit 3, a fan wheel unit 4 arranged in the housing unit 3, and a fan wheel unit 4 capable of driving to rotate The drive unit 5, and a power generation unit 6 located in the fan wheel unit 4.

Referring to FIGS. 2 and 3 together, the housing unit 3 includes a base 31 , a shaft tube 32 extending upward from the base 31 , and two bearings 33 disposed in the shaft tube 32 .

The fan wheel unit 4 includes a shaft 41 rotatably extending through the bearing 33 of the housing unit 3 , a hub 42 connected to the shaft 41 , and a first magnet ring disposed in the hub 42 43, and several fan blades 44 extending radially outward from the periphery of the hub 42, wherein the hub 42 has a body portion 421 connected to the shaft 41, and a base wall portion extending outward from the body portion 421 422, and a ring wall portion 423 extending downward from the periphery of the base wall portion 422, the first magnet ring 43 is set around the inner peripheral surface of the ring wall portion 423, and the fan blade 44 is set on the ring The outer peripheral surface of the wall portion 423 .

The drive unit 5 includes a first circuit board 51 set on the shaft tube 32 of the housing unit 3, a stator 52 ringed outside the shaft tube 32, and a stator 52 set on the first circuit board 51 and Electrically connected inductive element 53, wherein, the stator 52 can be controlled by the first circuit board 51, and the stator 52 has several silicon steel sheets 521 that are arranged around the shaft tube 32, and several groups of silicon steel sheets are wound around the silicon steel sheets 521 on the coil 522, and the inductive element 53 is used to sense the magnetic change of the first magnet ring 43, and then change the direction of the current flowing through the coil 522 of the stator 52 through the first circuit board 51, relatively To change the magnetic field generated by the silicon steel sheet 521, since the inductive element 53 in this embodiment is a Hall IC, which is well known to those skilled in the art, its detailed components and actions will not be repeated here.

The generating unit 6 includes a second magnet ring 61 set on the shaft tube 32 of the housing unit 3 and above the stator 52, a second circuit board 62 set on the body portion 421 of the hub 42, and A plurality of induction coils 63 are coiled on the second circuit board 62 and spaced from the second magnet ring 61 .

With reference to FIG. 4 , the induction coil 63 is formed by continuously coiling two metal wires in opposite directions, and each metal wire can form a plurality of coil turns 630, and each coil turn 630 is respectively surrounded by concentric circles. The corresponding second circuit boards 62 are arranged in the center to form concentric circles that look like fingerprints in appearance.

Through the above-mentioned design, the first circuit board 51 controls the stator 52 to generate an alternating magnetic field after being energized and excited, which repels the magnetic force of the first magnet ring 43 to drive the fan wheel unit 4 to rotate, and the inductive element 53 detects The magnetism of the first magnet ring 43 changes, and transmits the magnetic field signal to the first circuit board 51, correspondingly controlling and changing the magnetic field of the stator 52, so as to continuously drive the fan wheel unit 4 to rotate, and at the same time drive the set The second circuit board 62 on the body part 421 of the hub 42 rotates, so that the induction coil 63 curled around and arranged on the second circuit board 62 is subjected to the alternating change of the magnetism of the second magnet ring 61 to generate an induced current .

The second magnet ring 61 of the power generation unit 6 is sleeved on the shaft tube 32, and the second circuit board 62 is sleeved on the body portion 421 of the hub 42, so that the second magnet ring 61 and the The induction coil 63 can perform induction power generation, and the induction coil 63 is curled and arranged on the second circuit board 62, so that the thickness of the second circuit board 62 and the induction coil 63 is relatively thin, so the cooling fan can be avoided. The thickness of 2 is increased, which can effectively reduce the overall volume.

To sum up the above, the self-generating cooling fan 2 of the present invention uses the induction coil 63 to be curled and arranged on the second circuit board 62, so that it can not only generate an induced current through magnetic induction with the second magnet ring 61, but also Its thin design can be used to avoid the increase in the thickness of the cooling fan 2, and the overall volume can be effectively reduced, so the purpose of the utility model can indeed be achieved.

Claims (2)

1. the radiation fan of a self power generation, comprise a housing unit, an impeller unit of being located at this housing unit, one drives the driver element of this impeller unit rotational, and generator unit of being located in this impeller unit, wherein, this housing unit comprises a base, one from the upwardly extending central siphon of this base, and at least one is located at the bearing in this central siphon, this impeller unit comprises an interior axostylus axostyle of bearing that can be extended through this housing unit rotationally, a wheel hub that connects this axostylus axostyle, first magnet ring of being located in this wheel hub, and several pieces flabellums that extend to external radiation from this wheel hub periphery, wherein, this wheel hub has a main body portion that is connected with this axostylus axostyle, one from the outward extending basal wall of this main body portion portion, reach one from the downward rampart portion that extends of this basal wall portion periphery, this first magnet ring is the inner peripheral surface that is located on this rampart portion, described flabellum is an outer circumferential face of being located at this rampart portion, this driver element comprises that a slice is placed in the first circuit board on the central siphon of this housing unit, be located at outside this central siphon and the stator of this first circuit board control start for one, and a sense cell that is electrically connected this first circuit board and changes in order to the first magnet ring magnetic of detecting this impeller unit, it is characterized in that:

This generator unit comprises second magnet ring, the second circuit board of main body portion that a slice is sheathed on this wheel hub on the central siphon that is sheathed on this housing unit, and several be laid on this second circuit board curlingly and with this second magnet ring inductor coil separately, wherein, described inductor coil is to adopt two metal line to form around laying with the opposite directions continuous crisping, each metal line can constitute many coil turn, and each coil turn is to arrange around corresponding second circuit board center respectively in the concentric circle mode.

2. the radiation fan of self power generation according to claim 1 is characterized in that:

This stator has the silicon steel plate around several pieces central siphons that are located on this housing unit, and array is wound in the coil on the silicon steel plate.

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