CN201381996Y - Blowing fan - Google Patents
Blowing fan Download PDFInfo
- Publication number
- CN201381996Y CN201381996Y CN200920144724U CN200920144724U CN201381996Y CN 201381996 Y CN201381996 Y CN 201381996Y CN 200920144724 U CN200920144724 U CN 200920144724U CN 200920144724 U CN200920144724 U CN 200920144724U CN 201381996 Y CN201381996 Y CN 201381996Y
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- China
- Prior art keywords
- wind inlet
- shell block
- root edge
- plate
- flabellum
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Abstract
A blowing fan includes a casing seat, a stator and an impeller. The casing seat has an accommodating space for accommodating the stator and the impeller, and an air inlet and an air outlet for communication with the accommodating space are additionally arranged on the casing seat; and the impeller has a hub and a plurality of fan blades connected with the hub. One end at the top edge of each fan blade is an air inlet end close to the air inlet of the casing seat; an air gap is reserved between the top edge of each fan blade and the top part of the casing seat; a shortest distance is reserved between each air inlet end and the top part of the casing seat; and the width of each air gap ranges from 0.3 mm to 2.0 mm. Therefore, the turbulent flow and the noise generation are reduced.
Description
Technical field
The utility model is about a kind of blower fan, especially a kind ofly reduces flow-disturbing and promotes whole blower fan of going into air quantity and air output.
Background technique
Existing blower fan please refer to shown in Figure 1ly, and it comprises a shell block 7, a stator 8 and an impeller 9.This shell block 7 is provided with a central siphon 71, a wind inlet 72, an exhaust outlet 73, this central siphon 71 is arranged at the bottom of this shell block 7, this stator 8 is incorporated into the outer circumferential face of this central siphon 71, and 91 of mandrels of this impeller 9 are by the rotating inner peripheral surface that is incorporated into this central siphon 71 of a bearing; This wind inlet 72 and exhaust outlet 73 are opened in the top and the side wall of this shell block 7 respectively; This impeller 9 has a wheel hub 92 and several flabellums 93, this wheel hub 92 has a top cover portion 921, a ringwall portion 922 and a ring flat-plate 923, this mandrel 91 is positioned at the shaft core position of this top cover portion 921, this ringwall portion 922 axially is bent to form down by the outer periphery of this top cover portion 921, and this ring flat-plate 923 is bent to form by an end radial outward of this ringwall portion 922.These several flabellums 93 are equidistantly arranged the end of being located at this ring flat-plate 923.Whereby, when this existing blower fan work, this impeller 9 can suck ambient atmos from this wind inlet 72 simultaneously, and is concentrated to this exhaust outlet 73 by these flabellum 93 propellantes and sends.
The apical margin of this flabellum 93 and ring flat-plate 923 are respectively simultaneously and form between the top of this shell block 7 and the bottom and be arranged in parallel, wherein the apical margin of this flabellum 93 leaves an air gap (W) between these shell block 7 tops, when avoiding this impeller 9 to rotate with this shell block 7 between produce frictional impact the situation generation; But, aforementioned existing blower fan in the course of the work, when the ambient atmos desire enters shell block 7 inside by this wind inlet 72, the internal gas pressure of this shell block 7 often forces gas to pass through this air gap (W) and forms reverse overflow towards this wind inlet 72, cause hindering ambient atmos and flow into this wind inlet 72, and then the integral body that influences this existing blower fan is gone into air quantity; Simultaneously, the gas of this reverse overflow also easily with desire to enter gas in this shell block 7 and interfere mutually and form the flow-disturbing phenomenon, increase the overall noise amount of this existing blower fan so easily, and reduce its whole air output.For these reasons, existing blower fan has necessity of being improved really.
The model utility content
The utility model provides a kind of blower fan, is mainly the gas that reduces reverse overflow, produces situations such as flow-disturbing and noise when avoiding inlet air, promotes integral body simultaneously and goes into air quantity, is main goal of the invention.
The utility model provides a kind of blower fan, mainly is to have comparatively smooth gas flow path when this blower fan drives, and to promote whole air output and to go into air quantity, is less important goal of the invention.
For reaching aforementioned goal of the invention, technological means that the utility model used and the effect that can reach by this technological means include:
A kind of blower fan comprises a shell block, a stator and an impeller.This shell block has a containing space, and this stator and impeller are arranged in this containing space, is provided with a central siphon in this containing space; This shell block is provided with a wind inlet and an exhaust outlet that is communicated with this containing space in addition; This stator is incorporated into the central siphon of this shell block; This impeller has a wheel hub and several flabellums, and this impeller is incorporated into the central siphon of this shell block, and this flabellum connects this wheel hub.
Wherein an end of the apical margin of this flabellum is a wind inlet end, this wind inlet end is near the wind inlet of this shell block, have an air gap between the apical margin of this flabellum and this shell block top, the wind inlet end of this apical margin has a beeline between this shell block top, and this width of air gap is between 0.3 to 2.0 millimeter.
Whereby, between the apical margin of this flabellum and this shell block top, form undergauge, make the gas of reverse overflow be not easy to be back to this wind inlet, and then avoid, and then the integral body of lifting fan is gone into air quantity at the wind inlet end place generation flow-disturbing and the noise of this wind inlet near this flabellum by this air gap.
Perhaps, the shell block of described fan is provided with a base plate in addition, and this base plate is arranged at the bottom of this shell block and has one second wind inlet, and this second wind inlet is connected with this containing space.Respectively this flabellum has a root edge in addition respectively, one end of this root edge is a wind inlet end, this wind inlet end is near second wind inlet of this base plate, has an air gap between the root edge of this flabellum and this base plate, and the wind inlet end of this root edge is to having a beeline between this base plate, this width of air gap is between 0.3 to 2.0 millimeter.
Perhaps, described impeller is provided with a ring flat-plate in addition, and this ring flat-plate is connected in an end of this wheel hub.This ring flat-plate has a root edge, this root edge is an air-supply end away from an end of this wheel hub, this root edge and this shell block leave a gap between the bottom, and the air-supply end of this root edge has a beeline between this shell block bottom, and this gap width is between 0.3 to 2.0 millimeter.Whereby, avoid between this ring flat-plate and this shell block bottom, forming flow-disturbing, reduce wind and cut noise.
The beneficial effect that the utility model can reach is, forming undergauge between the apical margin of this flabellum and this shell block top or between the bottom of the root edge of this flabellum and this shell block, make the gas of reverse overflow be not easy to be back to this wind inlet by this air gap, and then avoid at wind inlet end place generation flow-disturbing and the noise of this wind inlet near this flabellum, and then the integral body of lifting fan is gone into air quantity; Perhaps by leaving a gap between the ring flat-plate root edge of described impeller and the fan case seat bottom, and the air-supply end of this ring flat-plate root edge has a beeline between this shell block bottom, avoids forming flow-disturbing between this ring flat-plate and this shell block bottom, and reduction wind is cut noise.
Description of drawings
Fig. 1: the combination of existing blower fan is analysed and observe and the gas flow schematic representation.
Fig. 2: first embodiment's of the utility model blower fan combination is analysed and observe and the gas flow schematic representation.
Fig. 3: the first embodiment's flabellum of the utility model blower fan and the partial enlarged drawing at shell block top.
Fig. 4: second embodiment's of the utility model blower fan combination is analysed and observe and the gas flow schematic representation.
Fig. 5: the second embodiment's ring flat-plate of the utility model blower fan and the partial enlarged drawing of shell block bottom.
Fig. 6: the 3rd embodiment's of the utility model blower fan combination is analysed and observe and the gas flow schematic representation.
Fig. 7: the 3rd embodiment's flabellum root edge of the utility model blower fan and the partial enlarged drawing of base plate.
The primary component symbol description:
1 shell block, 10 containing spaces, 11 central siphons, 110 bearings, 12 cover plates
121 first wind inlets, 13 exhaust outlets, 14 base plates, 141 second wind inlets, 2 stators
3 impellers, 31 wheel hubs, 311 top cover portion, 312 ringwall portions, 32 mandrels
33 ring flat-plates, 331 root edge 331a air-supply end, 34 flabellums, 341 apical margins
341a wind inlet end 341b outlet air end 342 root edge 342a wind inlet end 342b outlet air ends
35 water conservancy diversion cambered surfaces, 7 shell blocks, 71 central siphons, 72 wind inlets, 73 exhaust outlets
8 stators, 9 impellers, 91 mandrels, 92 wheel hubs, 921 top cover portion
922 ringwall portions, 923 ring flat-plates, 93 flabellums
Embodiment
For above-mentioned and other purpose of the present utility model, feature and advantage can be become apparent, preferred embodiment of the present utility model cited below particularly, and conjunction with figs. are described in detail below:
Please refer to shown in Figure 2ly, the utility model first embodiment's blower fan comprises a shell block 1, a stator 2 and an impeller 3.Wherein:
This shell block 1 has a containing space 10, and this stator 2 and impeller 3 all are arranged in this containing space 10; Be provided with a central siphon 11 in this containing space 10, this stator 2 is incorporated into the outer circumferential face of this central siphon 11, and this impeller 3 is by a bearing 110 rotating being arranged in this central siphon 11; This shell block 1 is provided with a cover plate 12 and an exhaust outlet 13 in addition, this cover plate 12 is mounted on the top of this shell block 1, and this cover plate 12 is provided with one first wind inlet 121, and the shaft core position of this first wind inlet 121 just with this central siphon 11 contraposition mutually, 13 side walls that are formed at this shell block 1 of this exhaust outlet, and this first wind inlet 121 and exhaust outlet 13 are connected with this containing space 10.
This impeller 3 has a wheel hub 31, a mandrel 32, a ring flat-plate 33 and several flabellums 34; This wheel hub 31 has a top cover portion 311 and a ringwall portion 312, and this mandrel 32 is arranged at the shaft core position of this top cover portion 311, and it is incorporated into this central siphon 11 in order to correspondence; This ringwall portion 312 axially is bent to form down from the outer periphery of this top cover portion 311, and this top cover portion 311 and ringwall portion 312 one common peripheral are around forming an inner space (not indicating), and these stator 2 contrapositions are placed in this inner space; This ring flat-plate 33 radially is connected in an end of this ringwall portion 312.These several flabellums 34 are arranged at the end surface of this ring flat-plate 33, and leave an air intake district between these several flabellums 34 and this ringwall portion 312 (not indicating).
The primary features of the utility model blower fan is: please refer to Fig. 2 and shown in Figure 3, respectively this flabellum 34 has an apical margin 341 respectively, and two ends of this apical margin 341 are respectively a wind inlet end 341a and an outlet air end 341b, this wind inlet end 341a is the end of this apical margin 341 near this first wind inlet 121, this outlet air end 341b then is the other end of this apical margin 341, has an air gap between the cover plate 12 of this apical margin 341 and this shell block 1, this width of air gap is between 0.3 to 2.0 millimeter, this wind inlet end 341a is not more than this outlet air end 341b to the distance of this cover plate 12 (T ') to the distance (T) of this cover plate 12, makes this distance (T) be the beeline of this apical margin 341 to this cover plate 12.
Referring again to shown in Figure 3, the utility model blower fan is in working procedure, ambient atmos is inhaled into the containing space 10 of this shell block 1 from this first wind inlet 121, when this flabellum 34 drives gases when the exhaust outlet 13 of this shell block 1 flows, the utility model forms an air-flow path of undergauge towards this wind inlet end 341a direction by this outlet air end 341b between this flabellum 34 and this cover plate 12 and certainly, make the gas of reverse overflow be not easy to be back to this first wind inlet 121 whereby by this air gap, and then avoid producing flow-disturbing at this first wind inlet 121 near this wind inlet end 341a place, reduce wind simultaneously and cut noise.
Please refer to shown in Fig. 4 and 5, the utility model second embodiment's blower fan comprises a shell block 1, a stator 2 and an impeller 3 equally, wherein the overall structure of this shell block 1 and stator 2 and identical the repeating no more of aforementioned first embodiment.More in detail, the utility model second embodiment's blower fan mainly can further have comparatively smooth gas flow path, to promote whole air output and to go into air quantity.Wherein:
The utility model second embodiment's impeller 3 is connected with this ring flat-plate 33 at ringwall portion 312 1 ends of this wheel hub 31 equally, but become the joint of non-right angle between this ring flat-plate 33 and this ringwall portion 312, so that this ring flat-plate 33 forms outwardly diametrically and being obliquely installed down, the angle that makes 312 in this ring flat-plate 33 and ringwall portion is greater than 90 °.Again, this ring flat-plate 33 has a root edge 331, this root edge 331 is an air-supply end 331a away from an end of this wheel hub 31, leave a gap between this root edge 331 and this shell block 1 bottom, this gap width is between 0.3 to 2.0 millimeter, and have a distance (D) between the air-supply end 331a of this root edge 331 and this shell block 1 bottom, this distance (D) also is the beeline of this root edge 331 to this shell block 1 bottom.In addition, this ring flat-plate 33 is provided with a water conservancy diversion cambered surface 35 with these ringwall portion 312 connections, and this water conservancy diversion cambered surface 35 just is positioned at this bottom, air intake district.
Referring again to shown in Figure 5, the utility model second embodiment's blower fan is reduced to crack between between this root edge 331 and this shell block 1 bottom between 0.3 to 2.0 millimeter, distance with 12 of the cover plates that increase this root edge 331 and this shell block 1 makes the air-flow path between this cover plate 12 and ring flat-plate 33 be the hole enlargement shape.Whereby, when ambient atmos when this first wind inlet 121 is inhaled into this air intake district, water conservancy diversion cambered surface 35 pilot gas of this arcuation flow towards this flabellum 34, avoid gas between this ringwall portion 312 and this ring flat-plate 33, to form flow-disturbing, cooperate air-flow path design of the hole enlargement towards this exhaust outlet 13 simultaneously from this water conservancy diversion cambered surface 35, not only make gas enter behind this containing space 10 flow more smooth and easy, effectively promote the whole air output of fan, simultaneously also can further avoid between this ring flat-plate 33 and this shell block 1 bottom, forming flow-disturbing, reduce wind and cut noise.
Please refer to shown in Figure 6ly, the utility model the 3rd embodiment's blower fan comprises a shell block 1, a stator 2 and an impeller 3 equally, wherein the overall structure of this stator 2 and identical the repeating no more of aforementioned first embodiment.More in detail, the utility model the 3rd embodiment's blower fan mainly can further be chosen as the blower fan of two-way inlet air.Wherein:
The utility model the 3rd embodiment's shell block 1 bottom is made of a base plate 14 in addition; The shell block 1 of present embodiment is except being provided with one first wind inlet 121 at this cover plate 12, simultaneously also be provided with another second wind inlet 141 at this base plate 14, this first wind inlet 121 and second wind inlet 141 be respectively to should impeller 3 being arranged at the top and the bottom of this shell block 1, and be connected with this exhaust outlet 13.
Please refer to shown in Figure 7, flabellum 34 1 ends of present embodiment directly are linked to the ringwall portion 312 of this wheel hub 31, and respectively this flabellum 34 has an apical margin 341 and a root edge 342 respectively, and this apical margin 341 has this wind inlet end 341a and outlet air end 341b equally with aforementioned first embodiment, does not repeat them here; In addition, respectively root edge 342 2 ends of this flabellum 34 are respectively a wind inlet end 342a and an outlet air end 342b, this wind inlet end 342a is the end of this root edge 342 near this second wind inlet 141, this outlet air end 342b then is the other end of this root edge 342, has an air gap between this root edge 342 and this base plate 14, this width of air gap is between 0.3 to 2.0 millimeter, and this wind inlet end 342a is not more than the distance of this outlet air end 342b to this base plate 14 to the distance (H) of this base plate 14.Again, the wind inlet end 342a of present embodiment equals the distance of this outlet air end 342b to this base plate 14 to the distance (H) of this base plate 14, and this root edge 342 is parallel to each other with this base plate 14.
The utility model blower fan is in working procedure, ambient atmos is inhaled into the containing space 10 of this shell block 1 from this first wind inlet 121 and second wind inlet 141 simultaneously, by the width of air gap between the apical margin 341 that dwindles this flabellum 34, root edge 342 and this cover plate 12, the base plate 14, make the gas of reverse overflow be not easy to be back to this first wind inlet 121 and second wind inlet 141 whereby by this air gap, and then avoid cutting noise at this first wind inlet 121 and second wind inlet 141 near this wind inlet end 341a, 342a place generation flow-disturbing and wind, to promote whole inlet air efficient.
Claims (9)
1, a kind of blower fan is characterized in that, comprises:
A shell block is provided with a cover plate and an exhaust outlet, and this cover plate is arranged at the top of this shell block and has one first wind inlet, and this first wind inlet and exhaust outlet are connected with a containing space of this shell block;
A stator is arranged in this containing space; And
An impeller is arranged in this containing space, and this impeller has a wheel hub and several flabellums, this flabellum connect this wheel hub and respectively this flabellum have an apical margin respectively;
Wherein an end of the apical margin of this flabellum is a wind inlet end, this wind inlet end is near first wind inlet of this cover plate, has an air gap between the apical margin of this flabellum and the cover plate of this shell block, and the wind inlet end of this apical margin is to having a beeline between this cover plate, this width of air gap is between 0.3 to 2.0 millimeter.
According to the described blower fan of claim 1, it is characterized in that 2, respectively the other end of the apical margin of this flabellum is an outlet air end, the distance of this wind inlet end and this cover plate is not more than the distance between this outlet air end and this cover plate.
According to claim 1 or 2 described blower fans, it is characterized in that 3, this shell block is provided with a base plate in addition, this base plate is arranged at the bottom of this shell block and has one second wind inlet, and this second wind inlet is connected with this containing space.
4, according to the described blower fan of claim 3, it is characterized in that, respectively this flabellum has a root edge in addition respectively, one end of this root edge is a wind inlet end, this wind inlet end is near second wind inlet of this base plate, have an air gap between the root edge of this flabellum and this base plate, and the wind inlet end of this root edge is to having a beeline between this base plate, this width of air gap is between 0.3 to 2.0 millimeter.
According to the described blower fan of claim 4, it is characterized in that 5, the other end of the root edge of this flabellum is an outlet air end, the distance between the wind inlet end of this root edge and this base plate is not more than the outlet air end of this root edge and the distance between this base plate.
6, according to claim 1 or 2 described blower fans, it is characterized in that this wheel hub has a top cover portion and a ringwall portion, this ringwall portion axially is bent to form down from the outer periphery of this top cover portion, and this impeller is provided with a ring flat-plate in addition, and this ring flat-plate radially is connected in an end of this ringwall portion.
7, according to the described blower fan of claim 6, it is characterized in that, this ring flat-plate has a root edge, this root edge is an air-supply end away from an end of this wheel hub, leave a gap between this root edge and this shell block bottom, and the air-supply end of this root edge has a beeline between this shell block bottom, this gap width is between 0.3 to 2.0 millimeter.
According to the described blower fan of claim 6, it is characterized in that 8, the angle between this ring flat-plate and this ringwall portion is greater than 90 °, this ring flat-plate forms outwardly and being obliquely installed down diametrically.
According to the described blower fan of claim 6, it is characterized in that 9, this impeller is provided with a water conservancy diversion cambered surface in addition, this water conservancy diversion arc surfaced is formed in this ring flat-plate and this ringwall portion connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920144724U CN201381996Y (en) | 2009-02-26 | 2009-02-26 | Blowing fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920144724U CN201381996Y (en) | 2009-02-26 | 2009-02-26 | Blowing fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201381996Y true CN201381996Y (en) | 2010-01-13 |
Family
ID=41525473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920144724U Expired - Fee Related CN201381996Y (en) | 2009-02-26 | 2009-02-26 | Blowing fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201381996Y (en) |
-
2009
- 2009-02-26 CN CN200920144724U patent/CN201381996Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20130226 |