CN201255130Y - self-generating cooling fan - Google Patents

Abstract

A self-generating heat dissipation fan comprises a shell unit, a fan wheel unit, a driving unit and a power generation unit; the driving unit comprises a first magnet ring arranged on the impeller unit, a first circuit board arranged on the shell unit, and a plurality of first induction coils arranged on the first circuit board in a curling manner; the power generation unit comprises a second magnet ring arranged on the shell unit, a second circuit board arranged on the impeller unit, and a plurality of second induction coils arranged on the second circuit board in a curling manner; by the design that the first induction coil and the second induction coil are respectively arranged on the first circuit board and the second circuit board in a curling mode, the thickness can be reduced by utilizing the thinned structure, and the overall volume of the heat dissipation fan is greatly reduced.

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, and a shaft tube sleeved 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 pieces from this wheel hub 14 the fan blade 10 extending outward, a generator set 15 is arranged between the hub 14 and the stator 16, the generator set 15 has a fixed seat 151 sleeved on the shaft tube 12, a ring set on the The magnetic frame 152 on the fixed base 151, and an iron core 153 spaced apart from the magnetic frame 152 and arranged on the hub 14, when the stator 16 is energized and excited, generate magnetic repulsion with the magnet ring 17 to drive the hub 14 rotates, 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 stator 16 needs to be excited by energization to generate a magnetic repulsion force sufficient for the rotation of the magnet ring 17, and thereby make the hub 14 rotate at a desired speed, if the volume of the stator 16 is reduced, the magnetic force will decrease. And then affect the speed of rotation of the hub 14, therefore, if the stator 16 needs to maintain the magnetic repulsion generated when energized and excited, the volume cannot be effectively reduced; , and is surrounded by the fixed seat 151, and the fixed seat 151 is additionally provided with a magnetic frame 152 that cooperates with the iron core 153 to generate electricity. Therefore, there must be enough space inside the hub 14 to be able to accommodate the entire generator. Unit 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 must be applied to the field of small mechanisms, the larger volume will inevitably As a result, the installation flexibility is reduced, or the area of the fan blade 10 must be sacrificed to reduce the heat dissipation efficiency. Therefore, there is still room for improvement in the structural design of the general heat dissipation fan 1 .

【Content of utility model】

The purpose of this utility model is to provide a self-generating heat dissipation fan which can generate electricity by itself and effectively reduce the volume thickness of the heat dissipation fan.

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

The housing unit includes a base, and a shaft tube extending upward from the base.

The fan wheel unit includes a hub pivotally arranged on the shaft tube of the housing unit, and several fan blades extending radially from the hub, wherein the hub has a base wall portion, and a base wall portion The ring wall portion whose peripheral edge extends downward, and the fan blade is arranged on the outer peripheral surface of the ring wall portion.

The driving unit includes a first magnet ring arranged on the inner peripheral surface of the ring wall of the hub, a first circuit board arranged on the outer peripheral edge of the shaft tube of the housing unit, and a first circuit board electrically connected to the first circuit board and Inductive elements spaced apart from the first magnet ring, and several first induction coils coiled and arranged on the first circuit board and spaced apart from the first magnet ring.

The power generation unit includes a second magnet ring sleeved on the shaft tube of the housing unit, a second circuit board arranged on the base wall of the hub, and several coils arranged on the second circuit board. And a second induction coil spaced apart from the second magnet ring.

The effect of the utility model is that the first induction coil of the drive unit is coiled and arranged on the first circuit board, not only the effect of driving the fan wheel unit to rotate can be achieved, but also the thinned The design reduces the thickness of the fan. Moreover, the second induction coil of the power generation unit is also designed to be curled and arranged on the second circuit board to generate electricity inductively with the second magnet ring. Therefore, the heat dissipation fan can be greatly reduced. of 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 the first preferred embodiment of the self-generating cooling fan of the present invention;

Fig. 3 is a sectional view illustrating the combined aspect of the first preferred embodiment;

FIG. 4 is a top view illustrating the state in which the second induction coil of the first preferred embodiment is curled and arranged on the second circuit board;

Fig. 5 is a sectional view illustrating a second preferred embodiment of the self-generating cooling fan of the present invention.

【Detailed ways】

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

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numerals.

Referring to Fig. 2, the first preferred embodiment of the self-generating cooling fan of the present utility model includes a housing unit 2, a fan wheel unit 3 arranged in the housing unit 2, and a fan wheel unit 3 driven to rotate A driving unit 4 and a power generating unit 5 arranged in the casing unit 2 .

Referring to FIG. 2 , the housing unit 2 has a base 21 , a shaft tube 22 extending upward from the base 21 , and two bearings 23 disposed in the shaft tube 22 .

Referring to Figures 2 and 3, the fan wheel unit 3 includes a hub 31, and several fan blades 32 radially extending from the hub 31, wherein the hub 31 has a rotatably extended The shaft 311 in the bearing 23 of 2, a base wall portion 312 connected with the shaft rod 311, and a ring wall portion 313 extending downward from the periphery of the base wall portion 312, the fan blade 32 is arranged on the The outer peripheral surface of the ring wall portion 313 .

The driving unit 4 includes a first magnet ring 41 arranged on the inner peripheral surface of the ring wall portion 313 of the hub 31, a first circuit board 42 arranged on the outer peripheral edge of the shaft tube 22 of the housing unit 2, several A first induction coil 43 that is curled on the first circuit board 42 and spaced from the first magnet ring 41, and an induction coil electrically connected to the first circuit board 42 and spaced from the first magnet ring 41 Element 44.

Wherein, the first induction coil 43 is formed by using two metal wires to be coiled continuously in opposite directions, and each metal wire can form several first coil turns 430, and the appearance of each first coil turn 430 is It is in the form of a fingerprint and arranged in concentric circles around the center of the corresponding first circuit board 42 .

In this embodiment, the inductive element 44 is a Hall IC, which is used to detect the magnetic change of the first magnet ring 41. Since the inductive element 44 is well known to those skilled in the art, its details Components and actions will not be described in detail.

3 and 4, the power generation unit 5 includes a second magnet ring 51 sleeved on the shaft tube 22 of the housing unit 2, a second circuit board 52 provided on the base wall portion 312 of the hub 31, and a plurality of second induction coils 53 curled on the second circuit board 52 and spaced from the second magnet ring 51 .

The second induction coil 53 is formed by continuously coiling two metal wires in opposite directions, and each metal wire can form several second coil turns 530, and each second coil turn 530 is outwardly It is in the form of fingerprints and arranged in concentric circles around the center of the corresponding second circuit boards 52 .

According to the above-mentioned structure, after the first circuit board 42 is energized and operated by the external power supply, the first induction coil 43 coiledly arranged on the first circuit board 42 is also controlled by the first circuit board 42 to flow current, so that all The first induction coil 43 generates an induced magnetic field, and the repulsion effect between the magnetic force of the first magnet ring 41 and the aforementioned induced magnetic field causes the first magnet ring 41 to rotate due to its magnetic repulsion, thereby driving the fan wheel unit 3 turn.

Then, use the fan wheel unit 4 to continue to rotate, and at the same time drive the second circuit board 52 sleeved on the base wall portion 312 of the hub 31 to rotate, so that the second circuit board 52 that is arranged on the second circuit board 52 in a curled manner is relatively curled. The induction coil 53 receives the alternating change of the magnetism of the second magnet ring 51 to generate an induced current.

By arranging the first induction coil 43 on the first circuit board 42 in a crimped manner, not only the effect of driving the fan wheel unit 4 to rotate can also be achieved, but also the thickness can be reduced by its thin design. Moreover, the The second induction coil 53 of the power generation unit 5 is also thinned and coiled on the second circuit board 52 to generate electricity inductively with the second magnet ring 51 , so the overall volume of the cooling fan can be greatly reduced.

Referring to Fig. 5, the second preferred embodiment of the self-generating heat dissipation fan of the present invention is substantially the same as the first preferred embodiment, including a housing unit 2, a fan wheel unit 3, and a drive unit 4, and a generating unit 5.

The difference is that the drive unit 4 also includes a ring-shaped silicon steel sheet 45 attached to the bottom surface of the first magnet ring 41 , and the silicon steel sheet 45 is attached to the first magnet ring 41 . Its magnetically permeable material also generates a magnetic field under the influence of the magnetic force of the first magnet ring 41, and then repels each other with the magnetic force of the first induction coil 43, relatively increasing the magnetic repulsion between the magnet ring 41 and the first induction coil 43 , increase the rotation speed of the fan wheel unit 3 .

To sum up the above, the self-generating heat dissipation fan of the present invention utilizes the design that the first induction coil 43 of the drive unit 4 is arranged on the first circuit board 42 in a curled manner, which not only can achieve the effect of driving the fan wheel unit 3 to rotate , the thickness of the fan can also be reduced by its thinned design, moreover, the second induction coil 53 of the power generation unit 5 is also rolled and arranged on the second circuit board 52 in a thinned design and connected with the second magnet The ring 51 induces power generation, therefore, the overall volume of the cooling fan can be greatly reduced, so the purpose of the present utility model can indeed be achieved.

Claims (4)

1. the radiation fan of a self power generation, comprise a housing unit, an impeller unit of being located at this housing unit, a driver element of being located at this housing unit, and generator unit of being located at this housing unit, this housing unit comprises a base, reach one from the upwardly extending central siphon of this base, this impeller unit comprises a wheel hub that is hubbed at the central siphon of this housing unit, and several pieces flabellums that extend to external radiation from this wheel hub, wherein, this wheel hub has a basal wall portion, and a rampart portion that extends downwards from this basal wall portion periphery, described flabellum is an outer circumferential face of being located at this rampart portion, it is characterized in that:

This driver element comprises first magnet ring that is located on the rampart portion inner peripheral surface of this wheel hub, a slice is arranged at the first circuit board of the central siphon outer periphery of this housing unit, one be electrically connected this first circuit board and with this first magnet ring sense cell separately, and several be laid on this first circuit board curlingly and with this first magnet ring first inductor coil separately, this generator unit comprises second magnet ring on the central siphon that is sheathed on this housing unit, a slice is located at the second circuit board of the basal wall portion of this wheel hub, and several be laid on this second circuit board curlingly and with this second magnet ring second inductor coil separately.

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

Described first and second inductor coil is to adopt two metal line to form around laying with the opposite directions continuous crisping respectively, and each metal line can be to constitute several first and second coil turn.

3. as the radiation fan of self power generation as described in the claim 2, it is characterized in that:

Each first and second coil turn is to arrange around corresponding first and second circuit board center respectively in the concentric circle mode.

4. as the radiation fan of self power generation as described in the claim 3, it is characterized in that:

This driver element also comprises a slice and adheres on the bottom surface of this first magnet ring and silicon steel plate in the form of a ring.

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