CN2538994Y

CN2538994Y - Magnetic suspension fan

Info

Publication number: CN2538994Y
Application number: CN 02206002
Authority: CN
Inventors: 陈建荣; 刘智光
Original assignee: Yen Sun Technology Corp
Current assignee: Yen Sun Technology Corp
Priority date: 2002-02-08
Filing date: 2002-02-08
Publication date: 2003-03-05
Anticipated expiration: 2012-02-08

Abstract

The utility model relates to a magnetic floating fan, which comprises a base board, an outer frame combined on the base board, a fan round arranged between the base board and the outer frame. An induction coil which is used to sense the rotary of the fan round is arranged on the base board in the outside of the fan round; a wheel hub is arranged on the fan round and a central through hole which is used for the driving shaft to go through is arranged on the wheel hub; a plurality of fan chips is arranged in the outer edge of the wheel hub; an induction magnetic ring which can mutually inducts with the induction coil is arranged on the outer edge of the fan; a magnetic ring is fixed in the through hole of the wheel hub, which is used to sense the rotary and position of the rotating shaft when the wheel hub rotates. A linkage end is arranged on the top end and bottom end of the rotating shaft; a supporting component is arranged on the base board and the out frame corresponding to the top end of the rotating shaft. The utility model has the advantages that the magnetic floating fan uses the magnetic force produced by the mutual induction between the magnetic ring and the rotating shaft to maintain the fan rotary balance, while the thickness can be reduced and the number of the elements used can be reduced, which can reduce the manufacturing cost.

Description

Magnetic suspension fan

(1) technical field:

The utility model relates to a kind of fan, particularly a kind of Magnetic suspension fan, and it can utilize magnetic force, keeps the impeller balanced rotation.

(2) background technique:

For reducing the axial vibrations that is produced when general small-sized heat radiating fan impeller rotates, it is more stable when impeller is rotated, usually the measure of taking, as shown in Figure 1, be between the circuit board 10 of fan 1 and stator coil 12, to set up a sense magnetic tinsel 14, magnetic force with the inductive magnetic ring 18 in the induction impeller 16, can be drop-down when impeller 16 is rotated by this induced magnetism, reach the balance and stability effect when keeping impeller 16 rotations, or as shown in Figure 2, be arranged on top in the impeller 22 but will feel magnetic tinsel 20, same, can reach the magnetic force of the inductive magnetic ring 24 in the induction impeller 22, balance and stability more when impeller 22 is rotated.

There is following shortcoming in above-mentioned general radiation fan 1,2:

1. integral thickness can't reduce:

Though general radiation fan 1,2 can be borrowed the whole inductive magnetic ring 18,24 in sense magnetic tinsel 14, the 20 surface induction impellers 16,22, reach the balance and stability effect when keeping impeller 16 rotations, but it still must be extended with central siphon 13,23 in the bottom of housing 11,21, with ccontaining bearing 15,25, the lubricated usefulness that reaches support when providing rotatingshaft 17,27 to rotate, thereby, cause the thickness of radiation fan 1,2 integral body to be reduced again.

2. member is numerous and diverse, the fabricating cost height:

Because general radiation fan 1,2 still must be extended with central siphon 13,23 ccontaining bearings 15,25 in the bottom of housing 11,21, therefore lubricated and support effect when providing rotatingshaft 17,27 to rotate, causes integrated member quite numerous and diverse, the fabricating cost height.

(3) summary of the invention:

Main purpose of the present utility model is to provide a kind of Magnetic suspension fan of keeping impeller rotary balance and low cost of manufacture.

For achieving the above object, the utility model is taked following technical measures:

Major character of the present utility model is, the perforation inwall of wheel hub is provided with the balanceable magnet ring, when wheel hub rotates, by the magnetic force that is interacted between this balanceable magnet ring and the rotatingshaft, reach the balance support effect that impeller rotates of keeping, make impeller can reach the function of the floating rotation of magnetic really, so do not need again in addition by extending central siphon on the substrate, and ccontaining bearing is in order to support rotatingshaft, and the fan integral thickness is reduced, and make the number of components also greatly reduce relatively, to reduce manufacture cost.

The utility model is taked following concrete structure:

Magnetic suspension fan of the present utility model mainly comprises: substrate, one are combined in the housing on the substrate, an impeller that is located between substrate and housing; The inductor coil that is used to respond to the impeller rotation is arranged on substrate, is positioned at the impeller outside; Impeller has a wheel hub, and wheel hub is provided with the central hole that confession one rotatingshaft wears; The wheel hub outer rim is provided with the multi-disc flabellum, and the flabellum outer rim is equipped with the inductive magnetic ring that can interact with inductor coil;

Be fixed with a balanceable magnet ring in the perforation of wheel hub, be used for induction rotatingshaft position rotating when wheel hub rotates.

Wherein, described rotatingshaft bottom has the apical grafting end, and the apical grafting end of corresponding rotatingshaft is provided with a supporter on the described substrate.

Wherein, described rotatingshaft top has the apical grafting end, and the apical grafting end of corresponding rotatingshaft is provided with a supporter on the described housing.

Wherein, corresponding rotatingshaft apical grafting end place is provided with an arc shrinkage pool on described each supporter.

Wherein, described supporter is a magnetic element.

Wherein, the apical grafting end at described rotatingshaft two ends respectively is provided with an arc shrinkage pool, respectively is equipped with a rolling ball body between the arc shrinkage pool of described rotatingshaft apical grafting end and supporter.

Compared with prior art, the utlity model has following effect:

1. can reduce integral thickness:

The utility model is provided with the balanceable magnet ring by the perforation inwall at wheel hub, can be when wheel hub rotates, by the magnetic force that is interacted between balanceable magnet ring and the rotatingshaft, reach the balance support effect that impeller rotates of keeping, make impeller can reach the effect of the floating rotation of magnetic really, so do not need again in addition can effectively to reduce the integral thickness of fan by extending supportive device such as central siphon on the substrate.

2. the number of components reduces, and can reduce manufacture cost

Because the utility model does not need in addition by extending supportive device such as central siphon on the substrate again, so the employed the number of components of the utility model can reduce relatively, and can reduce manufacture cost.

(4) description of drawings:

Fig. 1: the assembled sectional view of existing radiation fan;

Fig. 2: the assembled sectional view of another existing radiation fan;

Fig. 3: the utility model first embodiment's three-dimensional exploded view;

Fig. 4: the utility model first embodiment's assembled sectional view;

Fig. 5: the utility model second embodiment's assembled sectional view;

Fig. 6: the utility model second embodiment's part enlarged diagram;

Fig. 7: the utility model the 3rd embodiment's assembled sectional view;

Fig. 8: the utility model the 3rd embodiment's part enlarged diagram.

(5) embodiment:

Reaching embodiment in conjunction with the accompanying drawings is described in detail as follows structure characteristic of the present utility model:

As shown in Figures 3 and 4, the Magnetic suspension fan 3 that first embodiment is shown mainly includes a substrate 30, one and is incorporated into the impeller 34 that housing 32 on the substrate 30, are located at 32 of substrate 30 and housings; The inductor coil 36 that is used to respond to impeller 34 rotations is arranged on substrate 30, is positioned at impeller 34 outsides; Substrate 30 is provided with control piece 300, impeller 34 has a wheel hub 340, wheel hub 340 is provided with a perforation 342, perforation 342 wears for a rotatingshaft 38, and the outer rim of wheel hub 340 is provided with multi-disc flabellum 344, and is equipped with the inductive magnetic ring 346 that can interact with inductor coil 36 in flabellum 344 outer rims, particularly, the internal face of the perforation 342 of wheel hub 340 is provided with balanceable magnet ring 348, can respond to rotatingshaft 38 position rotating when wheel hub 340 rotates.

As shown in Figure 4, present embodiment produces when excitatory being energized to inductor coil 36, promptly with wheel hub 340 on the inductive magnetic ring 346 of flabellum 344 outer rims interact and produce magnetic force and drive wheel hub 340 and make impeller 34 rotations, at this moment, rotatingshaft 38 can interact with the balanceable magnet ring 348 of perforation 342 internal faces of wheel hub 340, to produce magnetic attraction, and make rotatingshaft 38 can under the support that does not need any member, carry out the floating rotation of magnetic, and has an effect of keeping impeller 34 rotary balances, therefore, can reduce the devices such as central siphon of supporting rotatingshaft 38 in the present embodiment, and make that fan 3 integral thickness are reduced, and reduce manufacture cost relatively.

Shown in Fig. 5,6, it represents second embodiment of the present utility model; Wherein, the Magnetic suspension fan 4 and first embodiment are roughly the same, its difference is, the top of rotatingshaft 48 and bottom have apical grafting end 482 respectively, 484, and the apical grafting end 484 at corresponding rotatingshaft 48 two ends on substrate 40 and the housing 42,482 are respectively equipped with a supporter 402,422, supporter 402, be respectively equipped with an arc shrinkage pool 404 on 422,424, apical grafting end 484 for rotatingshaft 48 two ends, 482 can be respectively at supporter 402,422 arc shrinkage pool 404, be supported rotation in 424, therefore, when impeller 44 is driven in rotation, the balanceable magnet ring 448 of perforation 442 internal faces of its wheel hub 440 also can be directly interacts with corresponding rotatingshaft 48, to produce attraction force, and rotatingshaft 48 is by the apical grafting end 484 at two ends, 482 have a tool arc shrinkage pool 404 respectively, 424 supporter 402,422 for its support rotation, and the counterbalance effect more can promote rotatingshaft 48 and rotate the time, it is smooth-going that impeller 44 is more stablized when rotating, moreover, supporter 402,422 can be magnetic element, and can be when impeller 44 rotates, supporter 402 by tool magnetic, 422 pairs of axial induction magnetic force that rotatingshaft 48 is produced, can be when impeller 44 is rotated by this induced magnetism, attract each other the longitudinal balance stabilization in the time of to promote impeller 44 rotations more.

Shown in Fig. 7,8, it represents the 3rd embodiment of the present utility model; Wherein the Magnetic suspension fan 5 and second embodiment are roughly the same, its difference is, two apical grafting ends 582 of rotatingshaft 58,584 also are respectively equipped with an arc shrinkage pool 586,588, two apical grafting ends 582 of rotatingshaft 58,584 arc shrinkage pool 586,588 with corresponding supporter 522,502 arc shrinkage pool 524,504 are equipped with a rolling ball body 59 respectively, therefore, when the impeller 54 of present embodiment is driven in rotation, can reach the effect identical except same with second embodiment, rotatingshaft 58 is by two apical grafting ends 582,584 arc shrinkage pool 586,588 with corresponding supporter 522,502 arc shrinkage pool 524,504 set rolling ball bodies 59, not only can reach the effect of the enhancement rotary balance identical with second embodiment, it is smooth-going that impeller 54 is stablized when rotating more, moreover, the employed supporter 502 of present embodiment, 522 also can be magnetic element, equally can be when impeller 54 rotates, supporter 502 by tool magnetic, 522 pairs of axial induction magnetic force that rotatingshaft 58 is produced, when being rotated, impeller 54 can be attracted each other by this induced magnetism, and the longitudinal balance stabilization when promoting impeller 54 more and rotating.

Claims

1, a kind of Magnetic suspension fan mainly comprises: substrate, one are combined in the housing on the substrate, an impeller that is located between substrate and housing; The inductor coil that is used to respond to the impeller rotation is arranged on substrate, is positioned at the impeller outside; Impeller has a wheel hub, and wheel hub is provided with the central hole that confession one rotatingshaft wears; The wheel hub outer rim is provided with the multi-disc flabellum, and the flabellum outer rim is equipped with the inductive magnetic ring that can interact with inductor coil; It is characterized in that:

2. Magnetic suspension fan according to claim 1 is characterized in that, described rotatingshaft bottom has the apical grafting end, and the apical grafting end of corresponding rotatingshaft is provided with a supporter on the described substrate.

3. Magnetic suspension fan according to claim 1 is characterized in that, described rotatingshaft top has the apical grafting end, and the apical grafting end of corresponding rotatingshaft is provided with a supporter on the described housing.

4. according to claim 2 or 3 described Magnetic suspension fans, it is characterized in that corresponding rotatingshaft apical grafting end place is provided with an arc shrinkage pool on described each supporter.

5. according to claim 2 or 3 described Magnetic suspension fans, it is characterized in that described supporter is a magnetic element.

6. Magnetic suspension fan according to claim 4 is characterized in that, the apical grafting end at described rotatingshaft two ends respectively is provided with an arc shrinkage pool, respectively is equipped with a rolling ball body between the arc shrinkage pool of described rotatingshaft apical grafting end and supporter.