CN2530293Y

CN2530293Y - Combined radiating fan

Info

Publication number: CN2530293Y
Application number: CN 01268180
Authority: CN
Inventors: 杨圣安
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-24
Filing date: 2001-10-24
Publication date: 2003-01-08
Anticipated expiration: 2011-10-24

Abstract

The utility model relates to an integrated radiating fan, which comprises a lower fan body and an upper fan body, wherein the lower fan body has a body; the top surface of the body protrudes out and take the conical shape; the center of the top surface of the body is provided with a sleeve shaft; the periphery of the body has a plurality of lower impeller protruding out; at the top surface of the body, chucking grooves with corresponding quantity to the lower impellers extend outward from the periphery of the sleeve shaft and the external ports of the chucking grooves are aligned with the lower impellers; the upper fan body is provided with a thimble; the center of the thimble is provided with a thimble hole that is fixed on the sleeve of the lower fan body; the periphery of the thimble extends with upper impellers in the quality corresponding to the lower impellers; the bottom edge of the upper impeller is just continuously connected with the top edge of the lower impeller; the root of the upper impeller is provided with a chucking strip; the chucking strip is positioned into the chucking groove of the lower fan body and fixed. The utility model can extend the wind cutting line and increase the wind cutting area, so as to attain the effect of increasing the static pressure and air intake and improving the radiation efficiency.

Description

The combined type radiator fan

(1) technical field

The utility model is about a kind of combined type radiator fan.

(2) background technology

Developing rapidly along with electronic industry in recent years, processing speed for electronic component requires more and more higher, but volume still need be adhered to light, thin, short, little principle, then relative, the heat that electronic component is produced in processing and calculating process is also more and more, by contrast, how to improve the heat sinking benefit of radiator fan, and can take into account light, thin, short, little principle, be the main direction of radiator fan design now.

Existing radiator fan all has fixedly specification, rotating speed also has fixedly standard, therefore, how to increase the radiating efficiency of radiator fan under existing specification requirement, and wind cutting area, static pressure and the intake of lifting radiator fan, the major consideration when being the radiator fan design; With axial-flow type radiator fan, existing radiator fan is at improving the direction that heat sinking benefit is improved, nothing more than changing blade shape or increasing blade dimensions, and the radiator fan development is attained in mature industry, and the best wind cutting shape of blade has all formalized, and there is no too greatly can be for changing the design space, if change blade dimensions, the radiator fan overall volume is increased, and under the situation of being limited in the space, this method is still unworkable.

So, just the someone designs a kind of radiator fan as shown in Figure 5, it is to have a body (60), body (60) end face projects upwards and forms coniform kenel, and body (60) outer peripheral edges projection has most blades (61), this each blade (61) apical margin all extends to the centre of body (60) end face, makes it prolong wind cutting line not changing under the preceding topic of blade diameter.

And during this kind radiator fan ejection formation, because of being subjected to the demoulding condition restriction of ejection shaping die, make between its blade below and the body end face and certainly will form a fill block, thereby blade down can the circulation of air feed stream the space can't design effective wind cutting angle and wind-guiding face, even cause the radiator fan of this kind kenel to prolong wind cutting line, but because the blade below has the obstruct of fill block, actual intake there is no tangible increase, and the existence of fill block, plastics when making its ejection formation in the required injection die cavity increase, radiator fan volume after its moulding and weight also increase thereupon relatively, the thick unequal problem of meat of fill block place formation can increase time cost in addition, and fill block has bigger cooling shrinkage stress when being in cooling, cause the surface depression situation easily, not only can influence the aesthetic property of radiator fan, even also can influence the moving smoothness of blade surface wind linear flow, influence radiating efficiency, and pull deformable blade that can make radiator fan and the verticality that influences its rotating shaft via plastic shrink, imbalance when causing body to rotate.

(3) utility model content

The purpose of this utility model is to provide a kind of combined type radiator fan, this combined type radiator fan can prolong wind cutting line, increases the wind cutting area not changing under the preceding topic of blade diameter and overall volume, increase static pressure and intake to reach, improve the effect of radiating efficiency.

In order to achieve the above object, the utility model provides a kind of combined type radiator fan, it is characterized in that: include: fan body on the fan body and once;

This time fan body has a body, the outstanding taper that is of this body end face, this body end face central projection is provided with sleeve, this body periphery projection has most lower blades, this body end face is outward extended with clamping groove with this lower blade respective amount by this sleeve periphery, and this clamping groove external port is alignd with this lower blade;

Should go up fan body and have a collar, these collar central authorities are provided with the sleeve that the cover borehole jack is fixed in this time fan body, this collar periphery is extended with the blade with this lower blade respective amount, this blade root edge apical margin proper and this lower blade is the continued access shape, this blade root is provided with the clip bar, and the clamping groove that this clip bar is inserted this time fan body is fixed.

Described combined type radiator fan is characterized in that: can be provided with the pilot hole that runs through in this clamping groove, the corresponding projection in this clip bar bottom surface has reference column, and this reference column embeds in this pilot hole.

By above-mentioned structural design, the utility model combined type radiator fan is had the following advantages:

1. increase the wind cutting area: its by fan body on one and once fan body formed, and the combined type radiator fan body end face after forming is outstanding coniform kenel, each blade apical margin extends to body center again, it can be prolonged wind cutting line and increase the wind cutting area, to reach heat sinking benefits such as improving static pressure and intake not changing under the preceding topic of blade diameter.

2. increase intake: because during each blade ejection formation of its upper and lower fan body, all can not be subjected to the demoulding condition restriction of ejection shaping die, make each blade below not have unnecessary fill block and have obstruct airflow space, and can design effective wind cutting angle and guide face, with its wind cutting line of certain increase, wind cutting area and intake.

3. do not increase overall volume and weight: because not having unnecessary fill block, its each blade below exists, thus the plastics in the required injection die cavity can not increase ejection formation the time, the relative volume and the weight that can not increase after its moulding.

4. quality of finished is good: do not exist because its each blade below does not have unnecessary fill block, make that the whole meat of combined type radiator fan is thick average, can avoid producing problems such as cooling shrinkage stress and finished surface shrinkage depression, and can avoid influencing the vertical precision of rotating shaft.

5. raising radiating efficiency: because the body end face is the coniform kenel design that is outstanding, make that but the space of each blade periphery supplied gas circulation is to be convergent kenel from top to bottom, can increase wind speed, static pressure and the intake of radiator fan relatively, to improve its radiating efficiency.For enabling further to understand structure of the present utility model, feature and main design focal point place thereof, describe in detail as the back with the preferred embodiment conjunction with figs. now:

(4) description of drawings

Fig. 1: be decomposing schematic representation of the present utility model.

Fig. 2: be combination schematic appearance of the present utility model.

Fig. 3: be combination diagrammatic cross-section of the present utility model.

Fig. 4: be enforcement synoptic diagram of the present utility model.

Fig. 5: be outward appearance and the partial cutaway schematic of commonly using structure.

(5) embodiment

The utility model is about a kind of combined type radiator fan, please cooperate referring to shown in Figure 1, and this combined type radiator fan is combined by fan body (20) on the fan body (10) and once;

Following fan body (10) has a body (11), body (11) end face projects upwards and forms coniform kenel, and its centre is equipped with a sleeve (13) again, the outer peripheral edges projection of body (10) has most lower blades (12), and body (10) end face is stretched out by the periphery of sleeve (13) and is provided with the clamping groove (14) that is respective amount with lower blade (12), the external port of clamping groove (14) must be corresponding with lower blade (12), in addition, be provided with in the clamping groove (14) and be the pilot hole (15) that runs through, as shown in Figure 3, and the internal perisporium of body (10) can supply a sheathed motor shell (16), motor shell (16) inside is arranged with a magnet (17) again, and body (10) central authorities are installed with a rotating shaft (18);

Last fan body (20) is to have a collar (21) that is flat, the collar (21) central authorities are equipped with the trepanning (22) of corresponding sleeve (13), the collar (21) periphery is outward extended with the blade (23) that is respective amount with lower blade (12), blade (23) root also is formed with the clip bar (24) corresponding with clamping groove (14), and the corresponding pilot hole in clip bar (24) bottom surface (15) is located projection reference column (25) is arranged.

Cooperate again referring to shown in Figure 2, during its assembling, be that the collar (21) that will go up fan body (20) overlaps sleeve (13) periphery that is fixed in down fan body (10) with its trepanning (22), and the clip bar (24) that makes fan body (20) is placed in down in the clamping groove (14) of fan body (10), reference column (25) can embed in the pilot hole (15), and the root edge of blade (23) just can be continued access with the apical margin of lower blade (12), thereafter, through methods such as ultrasonic or high frequencies upper and lower fan body (20), (10) are cohered and are integral, promptly form a combined type radiator fan.

Please cooperate again referring to shown in Figure 4, when it is implemented, be that the combined type radiator fan is arranged at a fan frame body (30) inside, this fan frame body (30) central authorities have a stator (31), stator (31) central authorities are provided with bearing (32) again, make rotating shaft (18) be inserted in bearing (32) central authorities and be rotatable kenel, fan frame body (30) then is to be fixedly arranged on a heat radiating fin bar (40) top, and heat radiating fin bar (40) and electronic component are fitted, can be by heat radiating fin bar (40) with the heat energy rapid diffusion that electronic component produced, and utilize the combined type radiator fan to import air-flow to reach the heat radiation purpose.

Claims

1. combined type radiator fan is characterized in that: include: fan body on the fan body and once;

2. combined type radiator fan as claimed in claim 1 is characterized in that: be provided with the pilot hole that runs through in this clamping groove, the corresponding projection in this clip bar bottom surface has reference column, and this reference column embeds in this pilot hole.