CN102072172A - Cyclone air-inlet centrifugal synchronous backward flow fan - Google Patents
Cyclone air-inlet centrifugal synchronous backward flow fan Download PDFInfo
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- CN102072172A CN102072172A CN2011100364273A CN201110036427A CN102072172A CN 102072172 A CN102072172 A CN 102072172A CN 2011100364273 A CN2011100364273 A CN 2011100364273A CN 201110036427 A CN201110036427 A CN 201110036427A CN 102072172 A CN102072172 A CN 102072172A
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Abstract
The invention discloses a cyclone air-inlet centrifugal synchronous backward flow fan comprising a casing, an air inlet of the casing, an air outlet of the casing, an impeller, a vane disk of the impeller, a vane of the impeller, an axial inlet of the vane of the impeller, an inlet of the air inlet of the casing and an outlet of the air inlet of the casing. The cyclone air-inlet centrifugal synchronous backward flow fan is characterized in that a cyclone inducer is arranged in the air inlet of the casing and comprises a baffling connector and a baffling vane, the baffling connector penetrates through the middle of the cyclone inducer longitudinally along an axial direction from the front to the back, the baffling vane is in the form of a bending structure, the front end of the radial direction of the baffling vane is connected with the baffling connector, the back end of the radial direction of the baffling vane is connected with the side wall of the air inlet of the casing, an inlet of the baffling vane at the front end of the axial direction of the baffling vane points to the inlet of the air inlet of the casing along an axial direction, and an outlet of the baffling vane at the back end of the axial direction of the baffling vane points to the axial inlet of the vane of the impeller slantways along a circumferential direction. In the cyclone air-inlet centrifugal synchronous backward flow fan disclosed by the invention, a cyclone air-inlet principle is adopted, the air-inlet effect of the fan is greatly improved, the flow rate of the fan is increased, the total-pressure efficiency is enhanced, energy resources are saved, and noise is lowered.
Description
Technical field
The present invention relates to a kind of eddy flow air intake centrifugal synchronous rear flow fan, belong to gas mechanical field (air purification machinery field).
Background technique
The present various centrifugal fans that use of people (mainly refer to general centrifugal rear flow fan, centrifugal synchronous rear flow fan, centrifugal synchronous after flow ventilating compressor); the impeller air intake is by axially suddenly becoming radially; the air intake resistance is big; eddy current loss is big; the air intake weak effect, efficient is low, and noise is big; both big energy-consuming was unfavorable for environmental protection again.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art; and provide a kind of direct axial straight air stream to become swirling eddy with air inlet; make the direct inspiration rotation of impeller blade import tangential gas flow enter impeller; impeller air intake resistance is little, and the eddy current friction is little, and air intake is effective; the efficient height; noise is little, can save the energy, helps the eddy flow air intake centrifugal synchronous rear flow fan of environmental protection again.
Purpose of the present invention can reach by following technical measures: eddy flow air intake centrifugal synchronous rear flow fan, include casing, the casing intake grill, the casing exhaust outlet, impeller, the leaf blade disk, impeller blade, the impeller blade axial inlet, the import of casing intake grill, the outlet of casing intake grill, characteristics are, be provided with the eddy flow persuader in the casing intake grill, the eddy flow persuader is made up of baffling connector and baffling blade, the baffling connector then passes through in the middle of the eddy flow persuader vertically from preceding, the baffling blade is the warp architecture form, baffling blade radial front end connects with the baffling connector, baffling blade radial rear end connects with casing intake grill sidewall, the import of casing intake grill is pointed in the import of baffling sharf forward end baffling blade vertically, and baffling sharf baffling blade exit to the back-end points to the impeller blade axial inlet along peripheral, oblique.In order further to realize purpose of the present invention, the baffling blade exit of eddy flow persuader turns to along circumferentially contrary impeller and tilts to point to the impeller blade axial inlet, also can tilt to point to the impeller blade axial inlet along circumferentially turning to along impeller.
In order further to realize purpose of the present invention, impeller blade preceding turns to arrangement along impeller along impeller radially from the back, and the impeller blade axial inlet preceding turns to arrangement along impeller along impeller radially from the back.Also can be impeller blade along impeller radially from the back and preceding contrary impeller turns to arrangement, the impeller blade axial inlet along impeller radially from the back and preceding contrary impeller turns to arrangement.
In order to narrate conveniently, express accurately, explain several correlation words earlier at this:
Impeller side or sidewall, casing side or sidewall that the impeller medial axis is pointed to are called axial sides or axial side wall;
Impeller or body are axial rear side towards motor (or other a power units) side, and Dui Ying opposite side is an axial front side with it, and the rest may be inferred for axial rearward direction and the denotion of axial the place ahead;
Locating near the impeller axle center is that impeller is radially anterior, and its anterior end is the impeller radial front end, is radially rear portion of impeller near impeller cylindrical place, and its outer circular edge is impeller radial extremity (the rest may be inferred for the denotion of casing region of interest);
The impeller sense of rotation is circumferentially, forward the impeller sense of rotation for rotation the place ahead or week forwards, carry the impeller sense of rotation and be rear swivel or week rearward, the rest may be inferred in the denotion of other region of interest of body.
Casing of the present invention is meant various centrifugal blower casings, as scroll casing type casing, conically shaped cylindrical drum combined type casing, conically shaped spiral case combined type casing etc.Impeller comprises general old-fashioned centrifugal blower fan blade wheel, centrifugal rear flow fan impeller, flow ventilating compressor impeller etc. after centrifugal synchronous rear flow fan impeller, the centrifugal synchronous.
The impeller blade axial inlet is the sideways synchronous concurrent import of flow ventilating compressor impeller shaft after centrifugal rear flow fan impeller shaft sideways negative pressure gap and centrifugal synchronous rear flow fan, the centrifugal synchronous.
The baffling connector of eddy flow persuader of the present invention can be multiple structural types such as taper, conically shaped, and the baffling blade can be the multiple warp architecture form of differently curved angle.
Working principle of the present invention is as follows: be provided with the eddy flow persuader in the casing intake grill, the axial streamlined flow gas stream of casing intake grill inspiration forms axial rotating operation air-flow behind its inboard eddy flow persuader, this axial rotating operation air-flow, directly tangentially enter impeller blade import (comprising impeller blade axial inlet and impeller blade radial inlet) in the rotating operation process, enter side runner in the impeller again.Structural principle of the present invention, thoroughly avoided the air-flow of flow ventilating compressor casing intake grill inspiration after general centrifugal rear flow fan, centrifugal synchronous rear flow fan, the centrifugal synchronous, behind the axially vertical bump impeller, the turnover that remakes 90 ° enters formed drag losses of impeller and eddy current loss, the resistance to flow output of casing intake grill is little, and casing intake grill air intake is effective.
The eddy flow air intake principle fairly obvious, that the present invention adopts can greatly be improved blower fan air intake effect, increases compressor flow, improves total pressure efficiency, saves the energy, reduces noise.
Eddy flow persuader in the casing intake grill of the present invention divides two kinds of structural types, and a kind of is that contrary impeller turns to the rotational structure form.The baffling blade exit of this structural type turns to along circumferentially contrary impeller and tilts to point to the impeller blade axial inlet, the eddy flow persuader of this structural type and the air-flow that goes out interruption-forming thereof all are the swirling eddies that contrary impeller turns to, yet should can very cut impeller blade import (axial inlet and radial inlet) against the swirling eddy that impeller turns to from rotating glibly, incision impeller blade flow velocity height (wheel speed put english circulation speed), flow is big, the efficient height, noise is low.
Second kind of structural type of eddy flow persuader is to turn to the rotational structure form along impeller.The baffling blade exit of this structural type tilts to point to the impeller blade axial inlet along circumferentially turning to along impeller, the eddy flow persuader of this structural type and the swirling eddy that goes out interruption-forming thereof all are the swirling eddies that turns to along impeller, and this can freedom cut the impeller blade import swimmingly along the swirling eddy that impeller turns to.Compare with first kind of structural type, second kind of structural type flow is little, but its swirling eddy is to turn to side runner in the rotation incision impeller along impeller, and the impeller blade resistance is little, and the efficient height consumes energy still less, and noise is lower.
For flow ventilating compressor impeller after guaranteeing centrifugal rear flow fan impeller, centrifugal synchronous rear flow fan impeller, centrifugal synchronous has better air intake effect, the present invention can preceding turn to arrangement along impeller along impeller radially from the back with its impeller blade, perhaps contrary impeller turns to arrangement, thus the impeller blade axial inlet of Xing Chenging also be along impeller radially from the back and preceding forward impeller turns to arrangement, or contrary impeller turns to arrangement, the impeller blade axial inlet of these two kinds of structural types can make side runner in the very smooth rotation incision of the casing intake grill outlet swirling eddy impeller.These two kinds of structural types, if impeller blade is similar in appearance to the circular arc vane of impeller circle, the circular arc impeller blade axial inlet that is formed by this circular arc impeller blade especially is fit to casing intake grill outlet swirling eddy by side runner in the axial rotation incision impeller again.
For flow ventilating compressor impeller after centrifugal rear flow fan impeller, centrifugal synchronous rear flow fan impeller, the centrifugal synchronous, if make it that middle intake grill of impeller and impeller blade radial inlet both be set, establish the impeller blade axial inlet again, during work, casing intake grill outlet swirling eddy can be cut side runner in the impeller by intake grill impeller blade radial inlet in the middle of the impeller and two position rotations of the sideways blade axial inlet of impeller front axle, thereby also just can greatly increase compressor flow.
For flow ventilating compressor impeller after centrifugal rear flow fan impeller, centrifugal synchronous rear flow fan impeller, the centrifugal synchronous, no matter whether its centre is provided with the middle intake grill of impeller, and the casing intake grill all adapts to makes tubaeform (conically shaped) intake grill that then becomes expansion by preceding.This flaring intake grill discharge area is big, can guarantee that the impeller front axle is big to side impeller blade axial inlet wind-exposuring area, thereby just can guarantee that also draught fan impeller has air draught effect better.
Below in conjunction with drawings and Examples the present invention is done at length and to explain.
Description of drawings
First kind of mode of execution structural principle of Fig. 1-the present invention schematic representation;
First kind of mode of execution casing of Fig. 2-the present invention intake grill eddy flow persuader structural principle schematic representation;
First kind of mode of execution draught fan impeller of Fig. 3-the present invention structural principle schematic representation;
The stereochemical structure principle schematic of first kind of mode of execution casing of Fig. 4-the present invention intake grill eddy flow persuader;
Second kind of mode of execution structural principle of Fig. 5-the present invention schematic representation;
Second kind of mode of execution casing of Fig. 6-the present invention intake grill eddy flow persuader structural principle schematic representation;
Second kind of mode of execution draught fan impeller of Fig. 7-the present invention structural principle schematic representation;
The third mode of execution structural principle schematic representation of Fig. 8-the present invention;
The 4th kind of mode of execution structural principle schematic representation of Fig. 9-the present invention;
The 4th kind of mode of execution casing intake grill of Figure 10-the present invention eddy flow persuader structural principle schematic representation;
The 4th kind of mode of execution draught fan impeller structural principle of Figure 11-the present invention schematic representation.
The explanation of accompanying drawing drawing:
1 casing, 2 casing intake grills, 3 casing exhaust outlets, 4 impellers, 5 leaf blade disk, 6 impeller blades, 7 impeller blade axial inlet, 8 casing intake grill imports, the outlet of 9 casing intake grills, 10 eddy flow persuaders, 11 baffling connectors, 12 baffling blades, 13 baffling blade imports, intake grill in the middle of the 14 baffling blade exits, 15 impellers, 16 impeller blade radial inlets, the synchronous water conservancy diversion pressurized machine of 17 impeller blades, 18 casing intake grill sidewalls, 19 motors.
Embodiment
During work, enter the axial linear movement airflow passes eddy flow persuader of casing intake grill, form axial rotating operation air-flow, after this axial rotating operation air-flow flows out casing intake grill outlet 9, contrary impeller turns to rotating flow to the impeller axial front side, directly rotation tangentially enters impeller blade axial inlet 7, enter side runner in the impeller through the impeller blade axial inlet again, become the high speed and high pressure air-flow through Impeller Machining again, and then being discharged into side runner in the casing, side runner, casing exhaust outlet 3 are discharged bodies and are drawn and do his and use in casing again.
In the entire work process, the axial streamlined flow air-flow that enters the casing intake grill is after the eddy flow persuader becomes swirling eddy, directly tangentially enter side runner in the impeller through 7 rotations of impeller blade axial inlet, avoided the axial streamlined flow air-flow of casing intake grill vertically to clash into the drag losses that impeller causes, avoided by axially suddenly transferring the eddy current loss that radially causes to the noise of having avoided eddy current to produce.
This example is owing to the outlet of casing intake grill is expanded, the impeller front axle is big to side impeller blade axial inlet 7 wind-exposuring areas, again because casing intake grill outlet swirling eddy sense of rotation is followed the impeller switched in opposite, so during the work of this example, yet casing intake grill exit flow can very tangentially enter the impeller blade axial inlet from rotating swimmingly, enters side runner in the impeller again.Impeller inlet negative pressure height, flow velocity big (wheel speed put english circulation speed), suction force is strong, and compressor flow is big.
This example suits to make multiple induced draught fan blower and uses.
Because this example is not established the middle intake grill of impeller, suction material major part is not advanced impeller, and clogging impeller uses so this example suits to make various suction materiel fans, in order to the multiple solid of suction, liquid material.
During the work of this example, casing intake grill outlet swirling eddy will tangentially enter side runner in the impeller by impeller blade radial inlet 16 and 7 two position rotations of impeller blade axial inlet of intake grill in the middle of the impeller, can impel the more air quantity of impeller inspiration to give processing like this.
This example suits to make various big flow ventilators and uses.
During the work of this example, the casing intake grill exports 9 air-flow sense of rotation with the impeller switched in opposite, impeller is by intake grill 15 in the middle of the impeller, impeller blade radial inlet 16 and impeller blade axial inlet 7 intake-gas, so its gas flow is big, again because this routine impeller is a conically shaped structural type, the impeller blade radial inlet of tilting and the impeller blade axial inlet of tilting are more suitable for the outlet of casing intake grill with side runner in the swirling eddy rotation incision impeller of impeller switched in opposite, thereby this routine negative pressure is big, flow velocity height (wheel speed and eddy flow rotating speed and), air quantity is big, pressurized effect is better, and efficient is higher, and noise is lower.
This example suits to make multiple ventilator, induced draught fan, blower use.
During work, the axial DC air-flow that enters the casing intake grill forms the swirling eddy that turns to along impeller through the eddy flow persuader, after this swirling eddy flows out casing intake grill outlet 9, turn to 7 (the synchronous concurrent imports) of rotation incision impeller blade axial inlet along impeller, enter the interior side runner of impeller again and become high-voltage high-speed airflow through Impeller Machining, and then by being arranged side runner in casing, and then be discharged from body and draw and do his and use.
In the entire work process, the axial streamlined flow air-flow that enters the casing intake grill is through after turning to the eddy flow persuader of rotation along impeller, form the swirling eddy that turns to along impeller, after this swirling eddy flows out the outlet of casing intake grill, directly turn to rotation incision impeller blade axial inlet along impeller, avoided the axial streamlined flow air-flow of casing intake grill vertically to clash into drag losses and the eddy current loss that impeller causes, the noise of having avoided eddy current to produce.
This routine air intake is effective, flow is big, the efficient height, and noise is low, compare with example 2, example 1 impeller inlet wind speed is that wheel speed adds rotation air-flow rotating speed, and this routine impeller inlet wind speed is the swirling eddy rotating speed, and compressor flow is little, but it turns to side runner in the incision impeller along impeller, the air intake resistance is littler, and efficient is higher, saves the energy more.
This example suits to make multiple ventilator, blower uses.
Because this example is not established the middle intake grill of impeller, and suction material major part is not advanced impeller, clogging impeller uses so this example suits to make multiple suction materiel fan again.
Claims (5)
1. eddy flow air intake centrifugal synchronous rear flow fan, include casing (1), casing intake grill (2), casing exhaust outlet (3), impeller (4), leaf blade disk (5), impeller blade (6), impeller blade axial inlet (7), casing intake grill import (8), casing intake grill outlet (9), it is characterized in that, be provided with eddy flow persuader (10) in the casing intake grill (2), eddy flow persuader (10) is made up of baffling connector (11) and baffling blade (12), baffling connector (11) then passes through in the middle of the eddy flow persuader vertically from preceding, baffling blade (12) is the warp architecture form, baffling blade (12) radial front end connects with baffling connector (11), baffling blade (12) footpath connects with casing intake grill (2) sidewall to the back-end, casing intake grill import (8) is pointed in baffling blade (12) axial forward end baffling blade import (13) vertically, and baffling blade (12) axial rearward end baffling blade exit (14) points to impeller blade axial inlet (7) along peripheral, oblique.
2. eddy flow air intake centrifugal synchronous rear flow fan according to claim 1 is characterized in that, the baffling blade exit (14) of eddy flow persuader turns to along circumferentially contrary impeller and tilts to point to impeller blade axial inlet (7).
3. eddy flow air intake centrifugal synchronous rear flow fan according to claim 1 is characterized in that, the baffling blade exit (14) of eddy flow persuader tilts to point to impeller blade axial inlet (7) along circumferentially turning to along impeller.
4. eddy flow air intake centrifugal synchronous rear flow fan according to claim 1 is characterized in that, impeller blade preceding turns to arrangement along impeller along impeller radially from the back, and impeller blade axial inlet (7) preceding turns to arrangement along impeller along impeller radially from the back.
5. eddy flow air intake centrifugal synchronous rear flow fan according to claim 1 is characterized in that, impeller blade along impeller radially from the back and preceding contrary impeller turns to arrangement, impeller blade axial inlet (7) along impeller radially from the back and preceding contrary impeller turns to arrangement.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100364273A CN102072172A (en) | 2011-01-29 | 2011-01-29 | Cyclone air-inlet centrifugal synchronous backward flow fan |
| CN 201110106319 CN102200134B (en) | 2011-01-29 | 2011-04-19 | Swirling air intake centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100364273A CN102072172A (en) | 2011-01-29 | 2011-01-29 | Cyclone air-inlet centrifugal synchronous backward flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102072172A true CN102072172A (en) | 2011-05-25 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100364273A Pending CN102072172A (en) | 2011-01-29 | 2011-01-29 | Cyclone air-inlet centrifugal synchronous backward flow fan |
| CN 201110106319 Expired - Fee Related CN102200134B (en) | 2011-01-29 | 2011-04-19 | Swirling air intake centrifugal fan |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110106319 Expired - Fee Related CN102200134B (en) | 2011-01-29 | 2011-04-19 | Swirling air intake centrifugal fan |
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| Country | Link |
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| CN (2) | CN102072172A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795523A (en) * | 2016-09-05 | 2018-03-13 | 博世电动工具（中国）有限公司 | Air deflector and the electric tool for including it |
| CN108438909A (en) * | 2018-04-03 | 2018-08-24 | 广州市胡氏标签印刷有限公司 | A kind of conveying device for sticky film, stationery particle |
| CN110145495A (en) * | 2019-06-11 | 2019-08-20 | 佛山市晟昊通风机有限公司 | A kind of structure of efficient centrifugal air inlet |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011087831A1 (en) * | 2011-12-06 | 2013-06-06 | Robert Bosch Gmbh | blower assembly |
| JP6961038B1 (en) * | 2020-05-12 | 2021-11-05 | 三菱電機株式会社 | Centrifugal fan and rotary electric machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3824028A (en) * | 1968-11-07 | 1974-07-16 | Punker Gmbh | Radial blower, especially for oil burners |
| JPS57191497A (en) * | 1981-05-22 | 1982-11-25 | Hitachi Ltd | Centrifugal fan |
| CN101303025A (en) * | 2008-05-22 | 2008-11-12 | 山东大学 | High-efficiency and energy-saving multifunctional centrifugal blower fan |
| CN202047999U (en) * | 2011-01-29 | 2011-11-23 | 林钧浩 | Centrifugal fan with whirl air intake |
-
2011
- 2011-01-29 CN CN2011100364273A patent/CN102072172A/en active Pending
- 2011-04-19 CN CN 201110106319 patent/CN102200134B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795523A (en) * | 2016-09-05 | 2018-03-13 | 博世电动工具（中国）有限公司 | Air deflector and the electric tool for including it |
| CN108438909A (en) * | 2018-04-03 | 2018-08-24 | 广州市胡氏标签印刷有限公司 | A kind of conveying device for sticky film, stationery particle |
| CN110145495A (en) * | 2019-06-11 | 2019-08-20 | 佛山市晟昊通风机有限公司 | A kind of structure of efficient centrifugal air inlet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102200134A (en) | 2011-09-28 |
| CN102200134B (en) | 2013-01-30 |
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Open date: 20110525 |