CN202360431U - Fan capable of preventing vane from removing - Google Patents

Fan capable of preventing vane from removing Download PDF

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Publication number
CN202360431U
CN202360431U CN2011205011911U CN201120501191U CN202360431U CN 202360431 U CN202360431 U CN 202360431U CN 2011205011911 U CN2011205011911 U CN 2011205011911U CN 201120501191 U CN201120501191 U CN 201120501191U CN 202360431 U CN202360431 U CN 202360431U
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CN
China
Prior art keywords
fan
impeller
root
leaf margin
abjunction preventing
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CN2011205011911U
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Chinese (zh)
Inventor
王科鉴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KUNSHAN GUANGXING ELECTRONICS CO Ltd
Original Assignee
KUNSHAN GUANGXING ELECTRONICS CO Ltd
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Priority to CN2011205011911U priority Critical patent/CN202360431U/en
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Publication of CN202360431U publication Critical patent/CN202360431U/en
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Abstract

The utility model relates to a fan capable of preventing a vane from removing. The fan comprises a fan frame, the vane and a limit piece, wherein a flow guiding space is formed in the fan frame, and the fan frame is provided with an air inlet and an air outlet, both of which are communicated with the flow guiding space; the vane can be rotatably pivoted with the flow guiding space of the fan frame, the vane is provided with a hub and a plurality of blades, the plurality of blades surround the outer circumference of a hub and are respectively provided with a first blade edge at the end towards the air inlet, the first blade edge is divided into an end part and a root part, and the root part is arranged between the end part and the hub; and the limit piece is provided with a anti-removing part and a plurality of connecting ribs, all of which are arranged in the air inlet of the fan frame, and the anti-removing part is aligned with the root part of each blade through a stopping part. The fan disclosed by the utility model can prevent the end parts of the plurality of blades from impacting a cover plate of the fan frame and can also effectively reduce the axial height of the fan so as to be applied to thin electronic devices.

Description

Can prevent the fan that impeller is deviate from
Technical field
The utility model is relevant for a kind of fan that prevents that impeller from deviating from, the fan that especially a kind of prevented impeller of deviating from vertically when preventing the impeller rotation is deviate from.
Background technique
Please with reference to Fig. 1, announce the fan 9 that M371180 number " limit structure of fan " patent case disclosed for TaiWan, China, this existing fan 9 comprises fan frame 91, an impeller 92 and a bounding means 93.
This fan frame 91 has a cover plate 911, and this cover plate 911 is provided with a perforate 912.This impeller 92 has a wheel hub 921 and several blades 922, and the axle center of this wheel hub 921 is corresponding to the center of this perforate 912, and these several blades 922 are located on the outer circumferential face of this wheel hub 921.The periphery of this bounding means 93 is provided with several connection ribs 931, and these several connection ribs 931 are connected to the internal face place of this perforate 912, makes this bounding means 93 can be arranged on this cover plate 911 and to should perforate 912; In addition, the bottom side of this bounding means 93 is provided with a projection 932 in addition, and this projection 932 is relative with this wheel hub 921.Structure in view of the above, when this impeller 92 produced displacement vertically, this wheel hub 921 can receive the backstop of the projection 932 of this bounding means 93, struck the cover plate 911 of fan frame 91 with several blades 922 in avoiding rotating.
But the projection 932 of this bounding means 93 is between this bounding means 93 and wheel hub 921, and the axial height with increasing fan 9 integral body makes this existing fan 9 be not suitable for being applied in the electronic equipment of slim purpose.Moreover the gap between this projection 932 and the wheel hub 921 can produce the phenomenon of flow-disturbing, so that produce problems such as noise and vibration when this impeller 92 rotates.
Summary of the invention
The utility model purpose is the shortcoming that solves above-mentioned existing technology, so that a kind of fan that prevents that impeller from deviating to be provided, can reduce the axial height of fan.
The utility model time purpose provides a kind of fan that prevents that impeller from deviating from, and in the fan frame, produces the flow-disturbing phenomenon in the time of can reducing the fan running.
For reaching aforementioned novel purpose, the fan that the prevented impeller of the utility model is deviate from comprises: a fan frame, and diversion space of inner formation, and this fan frame has a wind inlet and exhaust outlet that is communicated with this diversion space; An impeller; Can be articulated in the diversion space of this fan frame rotatably; This impeller has a wheel hub and several blades, and these several blade ring windings place the outer circumferential face of this wheel hub, and these several blades form one first leaf margin at the ora terminalis towards this wind inlet respectively; This first leaf margin is divided into an end and a root, and this root is between this end and this wheel hub; And a bounding means, having an abjunction preventing part and several connection ribs, this abjunction preventing part is arranged at the wind inlet of this fan frame with these several connection ribs, and this abjunction preventing part is with the root of stopper part contraposition to these several blades.
The fan that the prevented impeller of the utility model is deviate from; Wherein, The minimum range of the root of this stopper part to these several blades forms one first gap; The minimum range of end that this fan frame is provided with position to these several blades of wind inlet forms one second gap, and this first gap is less than this second gap.
The fan that the prevented impeller of the utility model is deviate from, wherein, the abjunction preventing part of this bounding means ringwise.
The fan that the prevented impeller of the utility model is deviate from, wherein, this stopper part is extended to the root of these several blades by the inner circle wall of this abjunction preventing part.
The fan that the prevented impeller of the utility model is deviate from; Wherein, this abjunction preventing part has relative an outer surface and an internal surface, and this internal surface is towards this impeller; These several connection ribs are connected in contiguous this outer surface in this abjunction preventing part, and this abjunction preventing part forms this stopper part in this internal surface place.
The fan that the prevented impeller of the utility model is deviate from, wherein, these several connection ribs are connected in the outer rim of this abjunction preventing part.
The fan that the prevented impeller of the utility model is deviate from, wherein, these several blades have one second leaf margin relative with this first leaf margin respectively.
The fan that the prevented impeller of the utility model is deviate from, wherein, the end of this first leaf margin is relative with this wind inlet.
The fan that the prevented impeller of the utility model is deviate from; Wherein, The minimum axial distance of the root of this first leaf margin to this second leaf margin is one first distance, and the minimum axial distance of the end of this first leaf margin to this second leaf margin is a second distance, and this first distance is less than this second distance.
The fan that the prevented impeller of the utility model is deviate from; By the stopper part that the root of contraposition to these several blades extends, can prevent the cover plate of end this fan frame of bump of these several blades, simultaneously; Also can effectively reduce the axial height of fan, in the electronic equipment that is applicable to slim purpose.
The fan that the prevented impeller of the utility model is deviate from produces the flow-disturbing phenomenon in the time of reducing the fan running in the fan frame, have the beneficial effect of problems such as reducing noise and vibration.
Description of drawings
Fig. 1: the schematic perspective view of existing fan.
Fig. 2: the three-dimensional exploded view of the utility model preferred embodiment.
Fig. 3: the axial sectional view of the utility model preferred embodiment.
Fig. 4: the broken section schematic perspective view of the another kind of bounding means of the utility model preferred embodiment.
Wherein:
(the utility model)
1 fan frame, 11 skeleton frames, 12 cover plates
13 diversion spaces, 14 axle beds, 15 coil groups
16 wind inlets, 17 exhaust outlets, 2 impellers
21 wheel hubs, 211 axostylus axostyles, 212 permanent magnets
22 blades, 221 first leaf margin 221a ends
221b root 222 second leaf margins 3 bounding meanss
311 stopper parts, 31 abjunction preventing parts, 312 outer surfaces
313 internal surfaces, 32 connection rib D1, first distance
D2 second distance D3 first clearance D 4 second gaps
(existing technology)
9 fans, 91 fan frames, 911 cover plates
912 perforates, 92 impellers, 921 wheel hubs
922 blades, 93 bounding meanss, 931 connection ribs
932 projections.
Embodiment
For letting the above-mentioned of the utility model and other purposes, characteristic and the advantage can be more obviously understandable, the special preferred embodiment of lifting the utility model of hereinafter, and conjunction with figs. elaborate as follows:
The main idea of the utility model is disclosing " can prevent the fan that impeller is deviate from "; The fan that can deviate from for axial flow fan (Axial Fan), centrifugal fan (Blower Fan) or other the prevented impellers that can use the utility model of the fan of indication wherein; The form of fan is not that the utility model limits; Though therefore following examples act centrifugal fan is that example describes, also should be as limit.
See also Fig. 2, it is the preferred embodiment of the utility model, and this fan that can prevent that impeller from deviating from comprises fan frame 1, an impeller 2 and a bounding means 3, and this impeller 2 is located at the inside of this fan frame 1, and this bounding means 3 is located at this fan frame 1; During these impeller 2 rotations, but the impeller 2 of this bounding means 3 butts displacement is vertically deviate to prevent this impeller 2 vertically.
This fan frame 1 can comprise a skeleton frame 11 and a cover plate 12, and this cover plate 12 removably is incorporated into this skeleton frame 11, to form a diversion space 13 in this fan frame 1 inside.This fan frame 1 is provided with an axle bed 14 and a coil groups 15 in addition, and this axle bed 14 can supply this impeller 2 to articulate, and this axle bed 14 is arranged in this diversion space 13 and can be one-body molded with this skeleton frame 11; This coil groups 15 is incorporated into this skeleton frame 11, and is preferably the periphery wall that is incorporated into this axle bed 14.Again, this fan frame 1 also has a wind inlet 16 and an exhaust outlet 17 that is communicated with this diversion space 13; In the present embodiment, this wind inlet 16 is opened in this cover plate 12 and relative with this axle bed 14, and this 17 of exhaust outlet is opened in a side of this skeleton frame 11, is blown out by this exhaust outlet 17 in order to guide the air-flow that is produced when this impeller 2 rotates.
This impeller 2 comprises a wheel hub 21 and several blades 22.This wheel hub 21 has an axostylus axostyle 211, and this axostylus axostyle 211 rotatably is incorporated into this axle bed 14, and the axle center that in this diversion space 13, rotates as this impeller 2.In addition, the inboard of this wheel hub 21 can combine to be provided with relative permanent magnet 212 (see figure 3)s of at least one and this coil groups 15; The electrical interaction that this at least one permanent magnet 212 and aforementioned coil groups 15 are produced is to have in the affiliated technical field that common knowledge the knowledgeable is appreciated that and the major technique characteristic of non-the utility model, does not give unnecessary details in this appearance.
Please cooperate and consult Fig. 3, these several blades 22 are around the outer circumferential face that is arranged at this wheel hub 21.These several blades 22 have one first leaf margin 221 and one second leaf margin 222 that is relative respectively; This first leaf margin 221 is towards this wind inlet 16; This first leaf margin 221 can be divided into an end 221a and a root 221b again, and this root 221b is between this end 221a and this wheel hub 21.Preferable relative with this wind inlet 16 of the end 221a of this first leaf margin 221 is to promote the water conservancy diversion effect of this blade 22; The root 221b of this first leaf margin 221 to the minimum axial of this second leaf margin 222 distance be one first distance B 1; The end 221a of this first leaf margin 221 to the minimum axial of this second leaf margin 222 distance be a second distance D2; This first distance B 1 can greater than, be equal to or less than this second distance D2, to form the blade 22 of different shape; In the present embodiment, this first distance B 1 makes this impeller 2 have preferable wind dispelling effect less than this second distance D2.
This bounding means 3 has an abjunction preventing part 31 and several connection ribs 32; This abjunction preventing part 31 can be geometrical shape arbitrarily; Form such as annulus or polygonal ring for example; These several connection ribs 32 are connected in the outer rim of this abjunction preventing part 31, and this abjunction preventing part 31 being arranged at wind inlet 16 places of this fan frame 1, and this abjunction preventing part 31 is in addition with the root 221b of a stopper part 311 contrapositions to these several blades 22.In the present embodiment; This abjunction preventing part 31 can be an annular slab; The inner circle wall of this abjunction preventing part 31 extends to form this stopper part 311 to the root 221b of these several blades 22; This stopper part 311 can be the form of continuous or discontinuous setting, and the accompanying drawing of present embodiment is to represent with the annular of continuous setting; Perhaps as shown in Figure 4; This abjunction preventing part 31 itself can have preset thickness and be a solid or hollow annular solid; Make this abjunction preventing part 31 have a relative outer surface 312 and an internal surface 313; This internal surface 313 is towards this impeller 2, and these several connection ribs 32 can be connected in this 31 contiguous these outer surface 312 places, abjunction preventing part, and this abjunction preventing part 31 then forms this stopper part 311 in these internal surface 313 places.
In addition; The minimum range of the root 221b of this stopper part 311 to these several blades 22 forms one first clearance D 3; This fan frame 1 is provided with the position (i.e. this cover plate 12) of wind inlet 16, and the minimum range of 221a then forms one second clearance D 4 to this end, and this first clearance D 3 is preferably less than this second clearance D 4.Moreover, this bounding means 3 can with these cover plate 12 one-body molded manufacturings, also can be the member that is assembled in this cover plate 12.
Certificate is by aforementioned structure; When these impeller 2 rotation runnings; Because this first clearance D 3 less than this second clearance D 4, even therefore this impeller 2 produces displacement along the axial of this axle bed 14 towards this wind inlet 16, collides at the end of these several blades 22 221a before the cover plate 12 of this fan frame 1; The stopper part 311 of this abjunction preventing part 31 forms spacing with regard to the root 221b that is connected to these several blades 22, so can effectively avoid the cover plate 12 of this fan frame 1 of end 221a bump of these several blades 22.Simultaneously; Because this stopper part 311 is root 221b of contraposition to these several blades 22, rather than higher wheel hub 21 centers of contraposition to axial height, and the axial height of this fan frame 1 is minimized; Thereby reduce the axial height of whole fan, make this fan can present slim pattern.
Again; Because the wind dispelling function of impeller 2 mainly is by due to the end 221a of these several blades 22; Therefore the utility model is with the root 221b of stopper part 311 contrapositions to these several blades 22 of this abjunction preventing part 31 but not end 221a; Not only can reduce the axial height of whole fan, also can not influence the wind dispelling function of this impeller 2, and can keep the operating efficiency of this fan.In addition; This bounding means 3 is provided with any member not having with these wheel hub 21 corresponding parts; And the stopper part 311 of this abjunction preventing part 31 is root 221b of direct contraposition to these several blades 22; So can reduce in this diversion space 13 phenomenon that produces flow-disturbing, and problems such as noise and vibration take place when reducing this fan running according to this.
In sum; The fan that the prevented impeller of the utility model is deviate from; The stopper part that can extend by the root of contraposition to these several blades prevents the cover plate of end this fan frame of bump of these several blades, simultaneously; Also can effectively reduce the axial height of fan, in the electronic equipment that is applicable to slim purpose.
The fan that the prevented impeller of the utility model is deviate from produces the flow-disturbing phenomenon in the time of can reducing the fan running in the fan frame, have the effect of problems such as reducing noise and vibration.
But the above person is merely preferred embodiment of the present invention, when not limiting practical range of the present invention with this; So, allly change and modify according to claim of the present invention and the simple equivalent done of creation description, all should still belong in the scope that patent of the present invention contains.

Claims (9)

1. the fan that can prevent that impeller from deviating from is characterized in that, comprises:
A fan frame, diversion space of inner formation, and this fan frame has a wind inlet and exhaust outlet that is communicated with this diversion space;
An impeller; Can be articulated in the diversion space of this fan frame rotatably; This impeller has a wheel hub and several blades, and these several blade ring windings place the outer circumferential face of this wheel hub, and these several blades form one first leaf margin at the ora terminalis towards this wind inlet respectively; This first leaf margin is divided into an end and a root, and this root is between this end and this wheel hub; And
A bounding means has an abjunction preventing part and several connection ribs, and this abjunction preventing part is arranged at the wind inlet of this fan frame with these several connection ribs, and this abjunction preventing part is with the root of stopper part contraposition to these several blades.
2. the fan that prevents that impeller from deviating from as claimed in claim 1; It is characterized in that; The minimum range of the root of this stopper part to these several blades forms one first gap; The minimum range of end that this fan frame is provided with position to these several blades of wind inlet forms one second gap, and this first gap is less than this second gap.
3. the fan deviate from of according to claim 1 or claim 2 prevented impeller is characterized in that the abjunction preventing part of this bounding means ringwise.
4. the fan that prevents that impeller from deviating from as claimed in claim 3 is characterized in that, this stopper part is extended to the root of these several blades by the inner circle wall of this abjunction preventing part.
5. the fan that prevents that impeller from deviating from as claimed in claim 3; It is characterized in that; This abjunction preventing part has relative an outer surface and an internal surface; This internal surface is towards this impeller, and these several connection ribs are connected in contiguous this outer surface in this abjunction preventing part, and this abjunction preventing part forms this stopper part in this internal surface place.
6. the fan that prevents that impeller from deviating from as claimed in claim 3 is characterized in that these several connection ribs are connected in the outer rim of this abjunction preventing part.
7. the fan deviate from of according to claim 1 or claim 2 prevented impeller is characterized in that these several blades have one second leaf margin relative with this first leaf margin respectively.
8. the fan that prevents that impeller from deviating from as claimed in claim 7 is characterized in that, the end of this first leaf margin is relative with this wind inlet.
9. the fan that prevents that impeller from deviating from as claimed in claim 7; It is characterized in that; The minimum axial distance of the root of this first leaf margin to this second leaf margin is one first distance; The minimum axial distance of the end of this first leaf margin to this second leaf margin is a second distance, and this first distance is less than this second distance.
CN2011205011911U 2011-12-06 2011-12-06 Fan capable of preventing vane from removing Active CN202360431U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205011911U CN202360431U (en) 2011-12-06 2011-12-06 Fan capable of preventing vane from removing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011205011911U CN202360431U (en) 2011-12-06 2011-12-06 Fan capable of preventing vane from removing

Publications (1)

Publication Number Publication Date
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Application Number Title Priority Date Filing Date
CN2011205011911U Active CN202360431U (en) 2011-12-06 2011-12-06 Fan capable of preventing vane from removing

Country Status (1)

Country Link
CN (1) CN202360431U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835968A (en) * 2012-11-20 2014-06-04 昆山广兴电子有限公司 Cooling fan
US9291170B2 (en) 2013-06-28 2016-03-22 Intel Corporation Blower assembly for electronic device
CN105927561A (en) * 2016-04-21 2016-09-07 深圳市风酷电子科技有限公司 Direct-current brushless fan and structure for preventing rotor from flying off
CN110345089A (en) * 2018-04-03 2019-10-18 建准电机工业股份有限公司 Fan

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835968A (en) * 2012-11-20 2014-06-04 昆山广兴电子有限公司 Cooling fan
CN103835968B (en) * 2012-11-20 2017-02-08 昆山广兴电子有限公司 Cooling fan
US9291170B2 (en) 2013-06-28 2016-03-22 Intel Corporation Blower assembly for electronic device
TWI558919B (en) * 2013-06-28 2016-11-21 英特爾公司 Blower assembly for electronic device
CN105927561A (en) * 2016-04-21 2016-09-07 深圳市风酷电子科技有限公司 Direct-current brushless fan and structure for preventing rotor from flying off
CN110345089A (en) * 2018-04-03 2019-10-18 建准电机工业股份有限公司 Fan

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