CN100441877C

CN100441877C - Centrifugal fan, and fan frame

Info

Publication number: CN100441877C
Application number: CNB2006100061072A
Authority: CN
Inventors: 邱永裕; 臧忠元; 黄文喜
Original assignee: Delta Optoelectronics Inc
Current assignee: Taida Electronic Industry Co Ltd; Delta Optoelectronics Inc
Priority date: 2006-01-16
Filing date: 2006-01-16
Publication date: 2008-12-10
Anticipated expiration: 2026-01-16
Also published as: CN101004177A

Abstract

The present invention relates to a fan frame. It includes a first frame body, a second frame body and a separation portion. The first frame body has at least a first opening; the second frame body has a base plate and a shaft cover portion. Said base plate has at least a second opening. Said separation portion is positioned between first frame body and second frame body, its one end is connected with first frame body and/or second frame body so as to form two independent air flow channels. Said invention also discloses a centrifugal fan, it possesses the above-mentioned fan frame.

Description

Centrifugal fan and fan frame thereof

Technical field

The present invention relates to a kind of centrifugal fan, particularly relate to a kind of centrifugal fan that has more the air port that has.

Background technique

Along with electronic product towards high-performance, high frequency, high-speed and lightening developing rapidly, cause the heating temperature of electronic product more and more higher, thereby be easy to generate wild effect, influence production reliability, so existing electronic product often utilizes fan as sink.

With reference to Fig. 1, a kind of known centrifugal fan 1 comprises fan frame 11, an impeller 12 and a motor (not shown).Fan frame 11 has single wind inlet 111 and single exhaust outlet 112.Impeller 12 is arranged in the fan frame, and has a wheel hub 121 and a plurality of flabellum 122.Motor is arranged in the wheel hub 121, connects and drives impeller 12 rotations.When impeller 12 rotated, air-flow entered from wind inlet 111, promoted the back via flabellum 122 and was flowed out by exhaust outlet 112.

By centrifugal action, so big with respect to the blast of axial flow fan, air quantity is little, is to improve heat dissipation, known technology increases the inlet air area with the centrifugal fan of two-sided inlet air to known centrifugal fan, makes air quantity promote because of main.Yet, different and single exhaust outlet is only arranged during running because of both sides inlet air condition, so can be interfering with each other behind the air-flow inlet passage and influence radiating effect.For example the ambient temperature of a side wind inlet is 30 ℃, and the ambient temperature of opposite side wind inlet is 40 ℃, and air-flow is mixed with each other behind the inlet passage, causes the flow outlet temperature to rise (between 30 ℃ to 40 ℃), thereby influences radiating effect.

Therefore, how providing a kind of centrifugal fan and fan frame thereof, improve fan usefulness to be added to air quantity, is one of current important topic.

Summary of the invention.

In view of above-mentioned problem, purpose of the present invention, improves fan usefulness and makes fan energy flexible Application to be added to air quantity, air-out direction for a kind of centrifugal fan and fan frame thereof are provided.

Therefore, for achieving the above object,, have one first framework, one second framework and a separating part according to a kind of fan frame of the present invention.First framework has at least one first opening, and second framework has a base plate and a shaft sleeve part, and base plate has at least one second opening.Separating part is arranged between first framework and second framework, and the one end is connected with first framework and/or second framework, to form two individual air stream passages.

For achieving the above object,, comprise fan frame, an impeller and a motor according to a kind of centrifugal fan of the present invention.The fan frame has one first framework, one second framework and a separating part, and first framework has at least one first opening, and second framework has a base plate and a shaft sleeve part, and base plate has at least one second opening.Separating part is arranged between first framework and second framework, and the one end is connected with first framework and/or second framework, to form two individual air stream passages.Impeller is arranged between first framework and second framework, comprise a wheel hub, a plurality of first flabellum and a plurality of second flabellum, first flabellum and second flabellum encircle the periphery that is located at wheel hub respectively, first flabellum is adjacent to first framework, second flabellum is adjacent to second framework, and separating part is between first flabellum and second flabellum.Motor is arranged at shaft sleeve part, connects and the drives impeller rotation.

From the above mentioned, because of being to have two individual air stream passages,, improve fan usefulness so can be added to air quantity according to a kind of centrifugal fan of the present invention and fan frame thereof, but and two individual air stream passage flexible Application (for example different air outputs, different air-out directions etc.), so that heat radiation function to be provided respectively.

Description of drawings

Fig. 1 is a kind of stereogram of known centrifugal fan;

Fig. 2 is the exploded view according to a kind of centrifugal fan of the preferred embodiment of the present invention;

Fig. 3 is the stereogram according to a kind of centrifugal fan of the preferred embodiment of the present invention;

Fig. 4 is the exploded view according to the another kind of centrifugal fan of the preferred embodiment of the present invention; And

Fig. 5 is the stereogram according to the another kind of centrifugal fan of the preferred embodiment of the present invention.

Embodiment

Hereinafter with reference to accompanying drawing, a kind of centrifugal fan and fan frame thereof according to the preferred embodiment of the present invention are described, wherein components identical will be illustrated with identical reference character.

With reference to Fig. 2 and Fig. 3, a kind of centrifugal fan 2 of the preferred embodiment of the present invention comprises fan frame 21, at least one impeller 22 and a motor 23, and fan frame 21 comprises a framework 211,212 and a separating part 213.Motor 23 is arranged on framework 211,212 or the separating part 213, is that to be arranged on the framework 212 with motor 23 be that example describes in this preferred embodiment, but not as limit.

Framework 211 has a wind inlet 2111, and framework 212 has a wind inlet 2124, and separating part 213 is arranged between the framework 211,212, and is connected with framework 211,212 respectively, to form two individual air stream passages and two exhaust outlets 2112,2125.Separating part 213, framework 211,212 can be the difference independent individuals.Separating part 213 also can be one-body molded with framework 211 or framework 212.Separating part 213 for example is ring flat-plate or the plate body with ringwall.

Framework 212 also has a base plate 2121 and a shaft sleeve part 2122, and at least one joint 2123 of base plate 2121 usefulness is connected with shaft sleeve part 2122, to constitute wind inlet 2124.Joint 2123 can be rib, guide plate or stator blade.In addition, shaft sleeve part 2122 also can change as required and is formed on the separating part 213, and base plate 2121 only needed to be formed into air port 2124 and got final product this moment.

Impeller 22 is arranged in the fan frame 21, comprises a wheel hub 221, at least one dividing plate 222 and at least one flabellum 223,224, and wherein flabellum 223,224 is positioned on the different axial positions, and corresponds respectively to above-mentioned two individual air stream passages.Dividing plate 222 is connected with wheel hub 221, and between above-mentioned two individual air stream passages.Flabellum 223,224 encircles respectively and is located on 222 liang of opposing sides of dividing plate.Flabellum 223,224, dividing plate 222 and wheel hub 221 can be the difference independent individual, also can be one-body molded.In addition, contract in a side away from wheel hub 221 of flabellum 223,224 can be with the outer periphery of dividing plate 222, give prominence to or the concordant form of essence, dividing plate 222 and the separating part 213 corresponding settings of fanning frame 21, make separating part 213 between flabellum 223,224, the air-flow path that flabellum 223,224 is corresponding different respectively.Flabellum 223,224 can be selected from lean forward leaf, a hypsokinesis leaf, a dull and stereotyped leaf and a combination thereof, and the setting of flabellum 223,224 can be equity or not reciprocity setting, and for example aerofoil profile, quantity, spacing or angle of inclination etc. can be identical or different.

Motor 23 is connected with shaft sleeve part 2122, connects and drives impeller 22 rotations.Because flabellum 223,224,

wind inlet

2111,2124 and

exhaust outlet

2112,2125 adhere to different air-flow path separately, therefore when 22 runnings of motor 23 drives impeller, the air-flow that flows into from wind inlet 2111 will be subjected to ordering about of flabellum 223 and discharge from exhaust outlet 2112, and the air-flow that flows into from wind inlet 2124 will be subjected to ordering about of flabellum 224 and discharge from exhaust outlet 2125.Because above-mentioned two air-flows flow in different passage respectively, so this two air-flow can not influence each other.

In addition, above-mentioned

exhaust outlet

2112,2125 can be by adjusting the assembling position and the shape of framework 211,212 and separating part 213, and the air-out direction that makes

exhaust outlet

2112,2125 is identical (as shown in Figure 5) or inequality, for example is perpendicular to one another, oppositely (as shown in Figure 3) or form an angle.Like this, fan 2 can dispel the heat to each heat radiation object that needs according to actual demand.

With reference to Fig. 4 and Fig. 5, the another kind of centrifugal fan 3 of the preferred embodiment of the present invention comprises fan frame 31, an impeller 32 and a motor 23.Fan frame 31 comprises two frameworks 311,312 and a separating part 313, and framework 311 has a wind inlet 3111 and an exhaust outlet 3112.Framework 312 is connected with framework 311, and has an exhaust outlet 3125, a base plate 3121 and a shaft sleeve part 3122.The a plurality of joints 3123 of base plate 3121 usefulness are connected with shaft sleeve part 3122, and have a wind inlet 3124.Joint 3123 can be rib, guide plate or stator blade.

Impeller 32 is arranged between two frameworks 311,312, comprises a wheel hub 321, two dividing plates 322,323 and a plurality of flabellum 324,325.Dividing plate 322,323 is connected with wheel hub 321, and has a space between the dividing plate 322,323.Dividing plate 322,323 is connected with wheel hub 321, flabellum 324,325 encircle respectively be located at dividing plate 322,323 mutually away from the two sides on.Flabellum 324,325, dividing plate 322,323 and wheel hub 321 can be the difference independent individual, also can be one-body molded.In addition, flabellum 324,325 can be positioned on the different axial positions, also can be positioned on the same axial position.

Separating part 313 is between dividing plate 322,323, and separating part 313 is connected with framework 311 and/or framework 312.Motor 23 is connected with shaft sleeve part 3122, connects and drives impeller 32 rotations.Like this, when motor 23 runnings, also can form two individual air stream passages, make unlikely the influencing each other of air-flow in the fan.

Exhaust outlet

3112,3125 also can be by adjusting the assembling position and the shape of framework 311,312 and separating part 313, and it is identical or inequality adjusting air-out direction, for example is perpendicular to one another, oppositely or accompany an angle.In addition, in this example, shaft sleeve part 3122 also can change and is formed on the separating part 313, more can improve the air quantity of going into of fan, increases radiating effect.

In sum, because of having two individual air stream passages,, improve fan usefulness so can be added to air quantity according to a kind of centrifugal fan of the present invention and fan frame thereof, and two individual air stream passages can flexible Application (for example different air outputs, different air-out directions etc.), so that heat radiation function to be provided respectively.

The above is not restricted for illustrative only.Any spirit of the present invention and category of not breaking away from all should be included in the accompanying Claim scope its equivalent modifications of carrying out or change.

Claims

1, a kind of centrifugal fan comprises:

One fan frame, have one first framework and one second framework, described first framework has at least one first wind inlet, described second framework has at least one second wind inlet, after described first framework and described second framework are assembled mutually, constitute two individual air stream passages, at least one first exhaust outlet and at least one second exhaust outlet;

One impeller is arranged in the described fan frame, comprises at least one wheel hub, at least one first flabellum and at least one second flabellum, and described first flabellum and described second flabellum correspond respectively to described two individual air stream passages;

One separating part is arranged between first framework and second framework, and together constitutes two individual air stream passages, first exhaust outlet and second exhaust outlet with first framework and second framework;

One motor connects and drives described impeller, and this motor is arranged on described first framework, second framework or the separating part.

2, centrifugal fan as claimed in claim 1, the wherein said separating part and first framework are one-body molded or one-body molded with second framework.

3, centrifugal fan as claimed in claim 1, wherein said separating part, first framework and second framework are the difference independent individual.

4, centrifugal fan as claimed in claim 1, wherein said separating part are ring flat-plate or the plate body with ringwall.

5, centrifugal fan as claimed in claim 1, wherein said second framework has a base plate and a shaft sleeve part, and base plate has second wind inlet, and base plate is connected by at least one joint with shaft sleeve part.

6, centrifugal fan as claimed in claim 5, wherein said joint are rib, guide plate or stator blade.

7, centrifugal fan as claimed in claim 1, the air-out direction of wherein said two individual air stream passages or air output are identical or inequality.

8, centrifugal fan as claimed in claim 1, wherein said wheel hub, first flabellum and second flabellum are indivedual independent individuals or one-body molded.

9, centrifugal fan as claimed in claim 1, wherein said impeller also comprises at least one dividing plate, and this dividing plate is connected with wheel hub, first flabellum and second flabellum, and dividing plate is between two individual air stream passages.

10, centrifugal fan as claimed in claim 8, wherein said dividing plate, wheel hub, first flabellum and second flabellum are difference independent individual or one-body molded.

11, centrifugal fan as claimed in claim 1, wherein said impeller also comprises one first dividing plate and a second partition, first dividing plate is connected with first flabellum with wheel hub, and second partition is connected with second flabellum with wheel hub, and first dividing plate and second partition are between two individual air stream passages.

12, centrifugal fan as claimed in claim 10, wherein said first dividing plate, second partition, wheel hub, first flabellum and second flabellum are difference independent individual or one-body molded.

13, centrifugal fan as claimed in claim 10 has a space between wherein said first dividing plate and the second partition.

14, centrifugal fan as claimed in claim 10 also comprises a separating part, and this separating part is arranged between first dividing plate and the second partition, and is connected with second framework with first framework.

15, centrifugal fan as claimed in claim 1, aerofoil profile, quantity, spacing or the angle of inclination of wherein said first flabellum and second flabellum are equity or not reciprocity setting.

16, centrifugal fan as claimed in claim 1, the air-out direction of wherein said two individual air stream passages be perpendicular to one another, oppositely or accompany an angle.

17, a kind of fan frame is applicable to a centrifugal fan, comprising:

One first framework has at least one first wind inlet; And

One second framework has at least one second wind inlet, after described first framework and described second framework are assembled mutually, constitutes two individual air stream passages, at least one first exhaust outlet and at least one second exhaust outlet.