CN2284305Y

CN2284305Y - Radiating device of small radiating fan

Info

Publication number: CN2284305Y
Application number: CN 96221293
Authority: CN
Inventors: 陈飞洋
Original assignee: XUANFENG ELECTRIC MACHINE CO Ltd
Current assignee: XUANFENG ELECTRIC MACHINE CO Ltd
Priority date: 1996-12-04
Filing date: 1996-12-04
Publication date: 1998-06-17
Anticipated expiration: 2006-12-04

Abstract

The utility model relates to a heat radiating device for a small heat radiating fan. A casing seat is provided with a coil to generate a magnetic field; the utility model is provided with an axle hole which is movably pivoted with an axle of blades which are fastened with a positioning element to prevent the blades from pulling out, and the blades are provided with magnets which can generate induction with the coil so that the blades can drive air; a circular wheel of the blades is provided with a plurality of slot holes which are openings or closed slots, the perpendicular walls of the slot holes, which are parallel to the axle, firstly form internal-contact inclined walls with perpendicular walls contacted with the air along the rotation directions of the blades, and the outer side ends of the inclined walls are contacted with the air earlier than the inner side ends.

Description

The sink of small-sized heat radiating fan

The utility model relates to a kind of sink of small-sized heat radiating fan.

Announce in the 26862 No. four " central processing unit (CPU) with the fixing device of cooling fan ", the 26862 No. five patent cases such as " computer radiator fan electric wire are withheld device " in Taiwan, utilize shell block itself to form several heat dissipation columns, the high heat that central processing unit (CPU) is produced can fast and effeciently be loose by blowing of fan and be removed.In above-mentioned patent case, the rotary action that the ROTATING SOURCE of impeller forms from impeller interior loop and magnet, and impeller this under the long-term operation situation, also can form high heat, it also has harmful effect working life to fan.

The purpose of this utility model is to provide a kind of sink of small-sized heat radiating fan, and it can make fan itself effectively be got rid of because of the high heat that coil produced.

The purpose of this utility model is to realize like this, a kind of sink of small-sized heat radiating fan promptly is provided, and it comprises: a shell block, and it is established coil and produces magnetic field, it has one can be for the movable axis hole that articulates of the axle of impeller, and one prevents that positioning element that impeller is deviate from is buckled in the axle of impeller; One impeller, its activity is articulated in the axis hole of shell block, and axle is provided with the groove for described positioning element snapping, is provided with magnet and coil-induced rotation in the impeller; The circular wheel of described impeller itself is provided with several slotted eyes, described slotted eye is opening slot or enclosed slot, the vertical wall that the described slotted eye vertical wall parallel with described axle contacts with air earlier according to the sense of rotation of impeller is the inscribe skew wall, and the outboard end of described skew wall is than the first ingress of air of medial extremity.

The advantage of the utility model device is, can be formed the heat radiation to Inside coil by the rotation of impeller itself, and it is high hot because of what long-term operation produced to reduce coil effectively.

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

Fig. 1 is a three-dimensional exploded 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.

See also shown in Figure 1ly, the utility model is made of major components such as shell block 1, impellers 2.

This shell block 1 can be various structures, and it forms stator by coil 11, and can be for impeller 2 movable pivot joints with an axis hole 12, and axis hole 12 can be members such as existing bearing, oil-impregnated bearing, central siphon, and with positioning element 13 active buckles such as C shape rings, deviates to prevent impeller 2.

This impeller 2 is articulated in the axis hole 12 of shell block 1 with one 21 activity, and with a recessed annular groove 22 for positioning element 13 snappings, impeller 2 can not be deviate from, this impeller 2 is rotatable, and drives flowing of air by flabellum 24, to form radiating airflow.

Characteristics of the present utility model mainly are the circular wheel of impeller 2 itself, it is provided with several slotted eyes 25, this slotted eye 25 can be opening slot or enclosed slot, this slotted eye 25 and axle 21 parallel vertical walls with regard to the sense of rotation of impeller 2, the vertical wall formation inscribe skew wall that contacts with air earlier; This skew wall is tilted inwardly by the outside, that is outboard end contacts earlier the contact more slowly of medial extremity one-tenth with air; This skew wall becomes 30 °-75 ° angle the most suitable approximately, therefore, when impeller 2 rotates, can be formed to the impeller axle center by slotted eye 25 and to revolve the air-flow that send, can be in order to coil 11 is formed preferable radiating effect.

Claims

1, a kind of sink of small-sized heat radiating fan, it comprises: a shell block, it is established coil and produces magnetic field, and it has one can be for the movable axis hole that articulates of the axle of impeller, and one prevents that positioning element that impeller is deviate from is buckled in the axle of impeller; One impeller, its activity is articulated in the axis hole of shell block, and axle is provided with the groove for described positioning element snapping, is provided with magnet and coil-induced rotation in the impeller; It is characterized in that, the circular wheel of described impeller itself is provided with several slotted eyes, described slotted eye is opening slot or enclosed slot, the vertical wall that the described slotted eye vertical wall parallel with described axle contacts with air earlier according to the sense of rotation of impeller is the inscribe skew wall, and the outboard end of described skew wall is than the first ingress of air of medial extremity.

According to the sink of the described small-sized heat radiating fan of claim 1, it is characterized in that 2, described inscribe skew wall becomes 30 °-75 ° angle.