CN203770218U

CN203770218U - Centrifugal fan

Info

Publication number: CN203770218U
Application number: CN201420006881.3U
Authority: CN
Inventors: 白烈光
Original assignee: Science Popularization Science And Technology Co Ltd
Current assignee: Science Popularization Science And Technology Co Ltd
Priority date: 2014-01-06
Filing date: 2014-01-06
Publication date: 2014-08-13
Anticipated expiration: 2024-01-06

Abstract

The utility model relates to a centrifugal fan. The centrifugal fan comprises a fan wheel, a fan frame and an air inlet structure, wherein the fan frame comprises a bottom plate, a top plate and a side surrounding plate; the top plate is arranged correspondingly to the bottom plate; the side surrounding plate is used for connecting the bottom plate and the top plate; a containing space for holding the fan wheel is defined by the bottom plate, the top plate and the side surrounding plate in common; and the air inlet structure comprises an inlet hole and an air guiding piece, wherein the air inlet hole is formed in the side surrounding plate; the air guiding piece is positioned in the containing space and at the side of the inlet hole. Therefore, the centrifugal fan can be used by thinned devices, and has the advantage that the input amount of external air can be increased, so that the radiating efficiency is improved.

Description

Centrifugal cutter

Technical field

The utility model is about a kind of centrifugal cutter, the centrifugal cutter that espespecially a kind of electronic heating component is used.

Background technique

Along with electronic product designs towards slimming, the problem of heat radiation has become the main direction of the sector research, and general under the restriction that is subject to usage space, most of electronic product all adopts centrifugal cutter to be combined into radiating module to apply.

Existing centrifugal cutter mainly comprises fan frame and more than two flabellum.Fan frame comprises base plate, top board and is connected in the side plate between described top board and base plate.The ring that side plate is closed shape is located at the external end edge of described flabellum, and forms exhaust outlet and the intake grill vertical with described base plate in a side of fan frame and each flabellum.In the time that centrifugal cutter operates, described flabellum rotates and the air-flow of driving substantially horizontal, produces dynamic pressure and static pressure, and then air-flow is sent through exhaust outlet via volute runner.

But exhaust outlet and the intake grill of existing centrifugal cutter are positioned at the same side, are vulnerable to use the impact of field domain surrounding environment and the practicability of centrifugal cutter is significantly reduced.In addition, intake grill only causes air output cannot effectively obtain amplification in single position.In addition, because volute runner is long and narrow, the gas flow that therefore can be output is quite limited, and above-mentioned reason all will cause the usefulness of centrifugal cutter not good, and is urgently overcome solution.

Model utility content

In view of this, main purpose of the present utility model is to provide a kind of centrifugal cutter, and it, not only can be for the device of slimming by the setting of air inlet structure, the input quantity of the extraneous gas that more can increase, and then heat radiation usefulness.

For achieving the above object, the utility model provides a kind of centrifugal cutter, this centrifugal cutter comprises impeller, fan frame and air inlet structure, described fan frame comprises base plate, to the top board should base plate arranging and the gusset plate that connects this base plate and this top board, between described base plate, described top board and described gusset plate, be jointly arranged with the containing space of settling for described impeller; Described air inlet structure comprises and is opened in the inlet hole on described gusset plate and is formed in described containing space and is positioned at the guide vane of this inlet hole side.

Preferably, described guide vane is arc-like sheet, and the free end of described guide vane is the tangential cpmponent bending deflection along described impeller sense of rotation.

Preferably, described guide vane is swash plate sheet, and the free end of described guide vane is the tangential cpmponent inclination and distortion along described impeller sense of rotation.

Preferably, described guide vane comprises the fork of extending from described gusset plate and the extended drainage of this fork portion certainly, the corresponding described inlet hole setting of described fork, and described drainage portion is parallel to the tangential cpmponent of described impeller sense of rotation.

Preferably, the described inlet hole of described air inlet structure and described guide vane are most.

Preferably, have axle bed at described baseplate molding, described impeller is arranged on this axle bed, and is formed with air-out passage in a side of described impeller and described fan frame.

Preferably, offer two flutings above in described axle bed outer peripheral edge region, described impeller comprises most flabellums, and each described fluting is corresponding to each described flabellum setting.

Preferably, offer through hole at described top board corresponding to the central position of described impeller.

Preferably, offer two flutings above in the corresponding described impeller of described base plate position, offer through hole at described top board corresponding to the central position of described impeller.

Preferably, described impeller comprise wheel hub and certainly this wheel hub periphery be the majority flabellum of radiated entends, and connect each described flabellum at the free end of described flabellum by circular ring.

Compared to prior art, the utility model also has following effect: by the design of the various shapes of guide vane, can make outside gas in the time entering in containing space, be to enter along the tangential cpmponent of impeller sense of rotation, and then can avoid flow-disturbing phenomenon.On top board, be provided with through hole and on base plate, be provided with fluting using as auxiliary air sucking mouth, thereby can increase air output with raising radiating efficiency.In addition, top board and base plate do not arrange the embodiment of through hole and fluting, and its position into and out of air port is all formed on side direction, can make the more slimming of overall structure of device, and can effectively prevent entering of the foreign matters such as dust.

Brief description of the drawings

Fig. 1 is the first embodiment's of the present utility model perspective exploded view;

Fig. 2 is the first embodiment's of the present utility model combination schematic diagram;

Fig. 3 is the first embodiment's of the present utility model use state cross-sectional schematic;

Fig. 4 is the second embodiment's of the present utility model fan frame perspective exploded view;

Fig. 5 is the second embodiment's of the present utility model combination cross-sectional schematic;

Fig. 6 is the 3rd embodiment's of the present utility model fan frame perspective exploded view;

Fig. 7 is the 3rd embodiment's of the present utility model combination cross-sectional schematic;

Fig. 8 is the 4th embodiment's of the present utility model fan frame perspective exploded view.

Description of reference numerals

Embodiment

Relevant detailed description of the present utility model and technology contents, will coordinate brief description of the drawings as follows, but appended accompanying drawing is only as illustrative purposes, not for limiting to the utility model.

Please refer to shown in Fig. 1 to Fig. 3, be respectively the first embodiment's of the present utility model perspective exploded view, combination schematic diagram and the state of use cross-sectional schematic.The utility model provides a kind of centrifugal cutter, and this centrifugal cutter 1 mainly comprises impeller 10, fan frame 20 and air inlet structure 30.

Impeller 10 is with material ejection formations such as plastics, the majority flabellum 12 that it comprises cylindrical shape wheel hub 11 and is radiated entends from wheel hub 11 peripheries, the inside of wheel hub 11 can supply the installing of the electrical assembly (not shown)s such as stator, rotor, because these electrical assemblys are that therefore prior art no longer describes in detail; The free end of each flabellum 12 is all vertical, and connects each flabellum 12 at the free-ended zone line of flabellum 12 by circular ring 13.

Fan frame 20 is also with material ejection formations such as plastics, and the fan frame 20 of the present embodiment mainly comprises base plate 21 and upper outlet body 22, and the drape forming that departs from central position at base plate 21 has axle bed 211.The gusset plate 222 that upper outlet body 22 has top board 221 and extends downward vertically from top board 221 peripheries, when upper outlet body 22 combines corresponding to base plate 21, to between base plate 21, top board 221 and gusset plate 222, jointly be arranged with the containing space 23 of settling for above-mentioned impeller 10, and be formed with air-out passage 24 in a side of impeller 10 and fan frame 20.

Air inlet structure 30 comprises and is opened in the inlet hole 31 of gusset plate 222 and is formed in containing space 23 and is positioned at the guide vane 32 of inlet hole 31 sides.In order to increase the inlet of extraneous gas, inlet hole 31 and guide vane 32 can adopt most designs.The guide vane 32 of the present embodiment is arc-like sheet, and the free end of each guide vane 32 is the tangential cpmponent bending deflection (as shown in Figure 3) along impeller 10 sense of rotation.

Please refer to shown in Fig. 4 and Fig. 5, be respectively the second embodiment's of the present utility model fan frame perspective exploded view and combination cross-sectional schematic.Centrifugal cutter of the present utility model is except can be the kenel of above-described embodiment, also can be the kenel of the present embodiment, centrifugal cutter 1a offers two 212a that slot above in axle bed 211 outer peripheral edge region of base plate 21a, and the 212a that respectively slots arranges corresponding to each flabellum 12 of impeller 10; In addition, offer through hole 223a at top board 221a corresponding to the central position of impeller 10, can increase gas inlet from through hole 223a and each fluting 212a introducing extraneous gas in impeller 10 rotation processes.In addition, the guide vane 32a of the present embodiment is swash plate sheet, and the free end of guide vane 32a is the tangential cpmponent inclination and distortion along impeller 10 sense of rotation.

Please refer to shown in Fig. 6 and Fig. 7, is the 3rd embodiment's of the present utility model fan frame perspective exploded view and combination cross-sectional schematic.The guide vane 32b of the centrifugal cutter 1b of the present embodiment comprises from the extended fork 321b of gusset plate 222 and from the extended drainage 322b of portion of fork 321b, wherein the corresponding inlet hole 31 of fork 321b arranges, so that the impeller 10 that the gas entering from inlet hole 31 is not rotated is blown out to fan frame 20 outsides.The 322b of drainage portion is parallel to the tangential cpmponent of impeller 10 sense of rotation, so that outside gas while entering containing space 23 from inlet hole 31, is that the tangent direction of rotating along each flabellum 12 of impeller 10 enters, so as to avoiding producing flow-disturbing phenomenon.

Please refer to shown in Fig. 8, is the 4th embodiment's of the present utility model fan frame perspective exploded view.Centrifugal cutter 1c offers through hole 223c at top board 221c corresponding to the central position of impeller 10, in addition, offer two 212c that slot above in axle bed 211 outer peripheral edge region of base plate 21c, each fluting 212c arranges corresponding to each flabellum 12 of impeller 10, can increase gas inlet from through hole 223c and each fluting 212c introducing extraneous gas in impeller 10 rotation processes.In addition, the guide vane 32c of the present embodiment comprises from the extended fork 321c of gusset plate 222 and from the extended drainage 322c of portion of fork 321c, wherein fork 321c arranges in the mode of covering inlet hole 31, the 322c of drainage portion is parallel to the tangential cpmponent of impeller 10 sense of rotation, so that outside gas while entering containing space 23 from inlet hole 31, is that the tangent direction of rotating along each flabellum 12 of impeller 10 enters.

The above, be only illustrating of preferred embodiment of the present utility model, and not in order to limit to protection domain of the present utility model, other any equivalent transformation all should belong to the application's claim scope.

Claims

1. a centrifugal cutter, is characterized in that, this centrifugal cutter comprises:

Impeller;

Fan frame, comprises base plate, to the top board should base plate arranging and the gusset plate that connects this base plate and this top board, is jointly arranged with the containing space of settling for described impeller between described base plate, described top board and described gusset plate; And

Air inlet structure, comprises and is opened in the inlet hole on described gusset plate and is formed in described containing space and is positioned at the guide vane of this inlet hole side.

2. centrifugal cutter as claimed in claim 1, is characterized in that, described guide vane is arc-like sheet, and the free end of described guide vane is the tangential cpmponent bending deflection along described impeller sense of rotation.

3. centrifugal cutter as claimed in claim 1, is characterized in that, described guide vane is swash plate sheet, and the free end of described guide vane is the tangential cpmponent inclination and distortion along described impeller sense of rotation.

4. centrifugal cutter as claimed in claim 1, it is characterized in that, described guide vane comprises the fork of extending from described gusset plate and the extended drainage of this fork portion certainly, the corresponding described inlet hole setting of described fork, and described drainage portion is parallel to the tangential cpmponent of described impeller sense of rotation.

5. centrifugal cutter as claimed in claim 1, is characterized in that, the described inlet hole of described air inlet structure and described guide vane are most.

6. centrifugal cutter as claimed in claim 1, is characterized in that, has axle bed at described baseplate molding, and described impeller is arranged on this axle bed, and is formed with air-out passage in a side of described impeller and described fan frame.

7. centrifugal cutter as claimed in claim 6, is characterized in that, offers two flutings above in described axle bed outer peripheral edge region, and described impeller comprises most flabellums, and each described fluting is corresponding to each described flabellum setting.

8. centrifugal cutter as claimed in claim 1, is characterized in that, offers through hole at described top board corresponding to the central position of described impeller.

9. centrifugal cutter as claimed in claim 1, is characterized in that, offers two flutings above in the corresponding described impeller of described base plate position, offers through hole at described top board corresponding to the central position of described impeller.

10. centrifugal cutter as claimed in claim 1, is characterized in that, described impeller comprise wheel hub and certainly this wheel hub periphery be the majority flabellum of radiated entends, and connect each described flabellum at the free end of described flabellum by circular ring.