CN2307136Y - Automatic corrector for axial flow fan rotor - Google Patents

Abstract

The utility model relates to an automatic corrector for axial flow fan rotors. A base plate is provided with a bottom plate, and control pieces and coils are arranged on the bottom plate. A bearing is arranged in an axle tube for a fan wheel to rotate in the positioning mode, and the fan wheel is driven by the induction of magnetic iron rings and the coils. A magnetic force ring is arranged in the axle tube, and a central axle of the fan wheel is sheathed with a magnetic ring; the proper space which has single polarity is formed between the magnetic force ring and the magnetic ring. Moreover, both the magnetic force ring and the magnetic ring can be in the same or different polarity so as to form mutually attractive or repellent balanced strength.

Description

The rotor automatic correction device of axial fan

The utility model relates to a kind of rotor automatic correction device of axial fan.

Existing radiation fan is provided with central siphon in the framework of ccontaining fan, and the poor design in the footpath that utilizes central siphon, bearing is embedded in the central siphon with the packing combination, and make the central shaft of impeller (rotor) penetrate bearing, and the central shaft terminal of impeller is provided with a circular groove, for fastener components buckles such as C shape clasps, so, impeller is articulated in by activity on the central siphon of radiation fan and becomes position rotating, and this bearing has two types design, a kind of is single bearing, announce " improvement of cooling fan self-lubricating bearing " patent case the 23569 No. six as Taiwan, it is to make single bearing that good location can be arranged, and adopts the bearing of the full whole shaft tube inner wall of embedding, articulate to support that central shaft is movable, have the problem of assembling inconvenience, and increase the surface of contact of central shaft and bearing simultaneously, surface of contact is bigger, wearing and tearing are also bigger, therefore the working life of reducing fan; Another kind is a duplex bearing, announce No. eight or eight, the two or eight the Seventh Five-Year Plan " integrated radiating fan case seat axle sleeve " patent case as Taiwan, it embeds upper and lower bearing in the packing of central siphon upper and lower end, can reduce and the middle partly area of contact of wall of central siphon, but the bearing that embeds is if having slightly deviation or the packing combination degree differs, the center line of corresponding center line of then upper and lower two bearings and impeller central shaft has offset problem, promptly can't guarantee fan center's axle in a fixedly straight line rotation, and easily produce noise.

The purpose of this utility model is to provide a kind of rotor automatic correction device of axial fan, keeps the non-migration center line in the time of can making the impeller rotation.

The purpose of this utility model is to realize like this, a kind of rotor automatic correction device of axial fan promptly is provided, establish supporting rod by substrate and support a base plate, described base plate is provided with the control piece that the coil drive impeller is rotated, described substrate is provided with central siphon, and described central siphon internal diameter is provided with the bearing of supporting impeller position rotating; The wheel hub of described impeller is provided with blade and magnet ring, and the central shaft of described impeller passes bearing bore diameter, and described central shaft is provided with the recessed circular groove of an annular, snapping positioning element in it; The central siphon internal diameter of described substrate is fixed a magnetic ring, and the sheathed magnet ring of the central shaft of described impeller has spacing between described magnetic ring and the described magnet ring, and the two has identical or different polarity and repels each other or inhale mutually.

The advantage of the utility model device is not have wearing and tearing during the impeller rotation, and keeps the non-migration central shaft.

Below in conjunction with accompanying drawing, embodiment of the present utility model is described, wherein:

Fig. 1 is an exploded perspective view of the present utility model;

Fig. 2 is a combination section of the present utility model;

Fig. 3 is a 3-3 line sectional drawing among Fig. 2;

Fig. 4 is the second use illustration of the present utility model.

See also a preferred embodiment of the present utility model shown in Figure 1, it is made of substrate 1, impeller 2, magnetic ring 3, magnet ring 4.

This substrate 1 is provided with supporting rod 11 to support a base plate 12, and this base plate 12 is provided with control piece 13, can make coil 14 drive impeller 2 and rotate, and this substrate 1 is provided with central siphon 15, and these central siphon 15 internal diameters are provided with bearing 16, can support impeller 2 position rotating; This substrate 1 combines with housing 17, and in order to protection impeller 2, in case of necessity, housing 17 can be integral with substrate 1.

This impeller 2 is provided with blade 21 and magnet ring 22 by wheel hub, and passes bearing 16 internal diameters rotations with a central shaft 23, and central shaft 23 is established the recessed circular groove 24 of an annular, and fastener components 25 such as location C shape clasps in the circular groove 24 can be rotated impeller 2 and do not deviate from.

The internal diameter of this central siphon 15 is fixed with a magnetic ring 3, and this magnetic ring 3 can be coil or permanent magnet, makes this magnetic ring 3 can produce a magnetic field; Establish a magnet ring 4 on the central shaft 23 of this impeller 2, this magnet ring 4 is preferably made by permanent magnet, this magnetic ring 3 all becomes ring and becomes suitable spacing with magnet ring 4, the two is single magnetic, and can become identical or different magnetic, makes magnet ring 4 and magnetic ring 3 perseverances that identical and uniform suction, row's strength be arranged, impel the two to remain on equilibrium locations, and have same axle center, so, make the central shaft 23 of impeller 2 keep the most balanced rotation.

The utility model utilizes the setting of magnetic ring 3 and magnet ring 4, is had balanced suction mutually or is repelled strength by the two, can not contact under the situation, makes central shaft 23 permanent one-tenth balanced rotation.

Claims (2)

1. the rotor automatic correction device of an axial fan is established supporting rod by substrate and is supported a base plate, and described base plate is provided with the control piece that the coil drive impeller is rotated, and described substrate is provided with central siphon, and described central siphon internal diameter is provided with the bearing of supporting impeller position rotating; The wheel hub of described impeller is provided with blade and magnet ring, and the central shaft of described impeller passes bearing bore diameter, and described central shaft is provided with the recessed circular groove of an annular, snapping positioning element in it; It is characterized in that the central siphon internal diameter of described substrate is fixed a magnetic ring, the sheathed magnet ring of the central shaft of described impeller has spacing between described magnetic ring and the described magnet ring, and the two has identical or different polarity and repels each other or inhale mutually.

2. according to the rotor automatic correction device of the described axial fan of claim 1, it is characterized in that described magnetic ring has the single magnetic that is formed by coil or permanent magnet.

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