CN104533832A - Centrifugal fan with vane guide grooves for noise reduction - Google Patents
Centrifugal fan with vane guide grooves for noise reduction Download PDFInfo
- Publication number
- CN104533832A CN104533832A CN201410592816.8A CN201410592816A CN104533832A CN 104533832 A CN104533832 A CN 104533832A CN 201410592816 A CN201410592816 A CN 201410592816A CN 104533832 A CN104533832 A CN 104533832A
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- motor
- centrifugal blower
- spiral case
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of air supplying equipment, and specifically relates to a centrifugal fan with vane guide grooves for noise reduction. The centrifugal fan comprises a base, a volute, a motor and wind wheels. The motor is a double-extension-shaft quadrupole motor. Two transmission shafts of the motor are respectively fixed to the wind wheels in the volute. The volute and the motor are fixed on the base. Each vane of each wind wheel includes a main body and mounting portions arranged at two ends of the main body. The main body of the vane is made of a rectangular raw material in a manner that by the long side of the rectangular raw material is used as a central line and the two wide sides are rotated in opposite directions. A plurality of guide grooves are arranged on one side or both sides of the vane. By adopting the above structure, the guide grooves are arranged on the side faces of the vanes, where the air flow passes, of the centrifugal fan, so that the wind can be more concentrated, the area and strength of air escaping from the vortex in the vane channel are both reduced, the vortex noise is decreased, the noise reduction effect is optimized and the overall characteristic effect of the fan is optimized.
Description
Technical field
The present invention relates to blowing device technical field, be specifically related to a kind of centrifugal blower of Leaf Conductance chute noise reduction.
Background technique
The air power noise of blower fan is primarily of rotational noise and eddy current crack composition, and the air pertormance compression process that blade High Rotation Speed in spiral case produces, containing stronger periodicity artery air-flow and tail.This time dependent pressure pulsation makes blade produce rotary radiation noise.And along with the increase of reynolds' number, the transverse movement of fluid micellar will be there is again in tail, by laminar condition excessively to turbulent condition, produce whirlpool, cause boundary layer to be separated, the whirlpool formed during separation is constantly taken away by main flow, forms trailing vortex district and produce eddy current crack after blade.
Be familiar with more clearly although people have blower fan eddy current crack, due to the complexity of eddy current parameter, also do not have theoretical formula or the technological scheme that can instruct actual fan design at present, eddy current crack is the difficult problem reducing fan noise always.
Summary of the invention
The present invention proposes a kind of centrifugal blower of Leaf Conductance chute noise reduction, improves blade structure, rationally improves air channel, noise decrease, its reasonable in design.
For reaching this object, the present invention by the following technical solutions:
A kind of centrifugal blower of Leaf Conductance chute noise reduction, comprise base, spiral case, motor and wind wheel, described motor is double extension shaft formula quadrupole motor, two transmission shaft is individually fixed in the wind wheel in described spiral case, described spiral case and described motor are fixed on described base, described blade comprises main body and is located at the assembly department at main body two ends, described main body is by rectangular raw material line centered by the long limit of one, two broadside counterrotatings form, and one of them side of described blade or two sides are provided with multiple guiding gutter.
Described wind wheel is by two single wheel axles to being formed by fixedly connecting, and the blade of described two single-wheels staggers mutually.
Described single-wheel comprises described blade, end ring and former, and described end ring and described former are located at outside and the inner side of the vane group be made up of described blade respectively, and described former is fixed by axle sleeve, and described axle sleeve is fixedly connected with described transmission shaft.
The diameter of described wind wheel and width ratio are 180:196.
Blade 410 quantity of described wind wheel is 85-105 sheet.
Two intake grills of described spiral case be located at respectively described rotor shaft to both sides, described intake grill is provided with diminishing baffle liner from outside to inside.
The exhaust outlet of described spiral case is located at described base, and described exhaust outlet is provided with the diffusion mouth of outward-dipping 3 °-5 °, and described diffusion mouth and described spiral case are integral type structure.
Described spiral case comprises side cover and enclose lid, encloses the button hole of lid described in the fastener of described side cover passes, and left-hand thread residence is stated and enclosed lid.
The length of described spiral case is 240mm-270mm.
Be provided with insulation board between described motor and described base, the screw of fixing described motor and described base uses insulating bush to completely cut off and opens.
The present invention is according to above structure, and the side of centrifugal fan blade is distinguished and admirable through place, is provided with guiding gutter, wind Shu Gengwei can be made to concentrate, make Ye Daonei depart from region and the intensity minimizing of eddy current, reduce eddy current crack, noise reduction is best, the overall permanence best results of blower fan.
Accompanying drawing explanation
Fig. 1 is the forward sight structural representation of one embodiment of the present of invention.
Fig. 2 is the plan structure schematic diagram of one embodiment of the present of invention.
Fig. 3 is the right TV structure schematic diagram of one embodiment of the present of invention.
Fig. 4 is the right TV structure schematic diagram of an embodiment of wind wheel.
Fig. 5 be an embodiment of wind wheel face structural representation.
Fig. 6 is the raw material structure schematic diagram of an embodiment of blade.
Fig. 7 is the side-looking structural representation of an embodiment of blade.
Fig. 8 is that structural representation looked up by the raw material of an embodiment of blade.
Wherein: base 1, spiral case 2, side cover 201, enclose lid 202, baffle liner 203, diffusion mouth 204, motor 3, transmission shaft 301, wind wheel 4, blade 410, main body 411, assembly department 412, guiding gutter 413, end ring 402, former 403, axle sleeve 404, blades installation angle A, blade radius of the radian R.
Embodiment
Technological scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
As shown in Figures 1 to 4, a kind of centrifugal blower of Leaf Conductance chute noise reduction, comprise base 1, spiral case 2, motor 3 and wind wheel 4, described motor 3 is double extension shaft formula quadrupole motor, two transmission shaft 301 is individually fixed in the wind wheel 4 in described spiral case 2, described spiral case 2 and described motor 3 are fixed on described base 1, the setting angle A of the blade 410 of described wind wheel 4 is 30 °-40 °, as shown in Figure 6, described blade 410 comprises main body 411 and is located at the assembly department 412 at main body 411 two ends, described main body 411 is by rectangular raw material line centered by the long limit of one, two broadside counterrotatings form, the length on described long limit is 90-100mm, the length of described broadside is 18-24mm, as shown in Figure 7, the radius of the radian R of described blade 410 is 12-15mm, one of them side or two sides of described blade 410 are provided with multiple guiding gutter 413, guiding gutter 413 is the rectangle groove at multiple interval.As shown in Figure 8, blade 410 is that a side is provided with guiding gutter 413.
Utilize the fluid mechanics of air, the efficiency of the design increase centrifugal blower that described blade 410 is such, plays the effect improving air-flow, makes centrifugal blower performance more superior, effectively reduce the volume of centrifugal blower, have larger blast simultaneously.
The side of blade 410 described in centrifugal fan is distinguished and admirable through place, be provided with guiding gutter 413, wind Shu Gengwei can be made to concentrate, make Ye Daonei depart from region and the intensity minimizing of eddy current, reduce eddy current crack, wherein the span t=b/5 of guiding gutter 413, during guiding gutter height h=b/10, wherein b is the length of described blade 410, and noise reduction is best, the overall permanence best results of blower fan.
As shown in Figure 5, described wind wheel 4 is by two single wheel axles to being formed by fixedly connecting, and the blade 410 of described two single-wheels staggers mutually, the air-flow introduced respectively is interacted, increase blast from two described single-wheels.
As shown in Figure 4 and Figure 5, described single-wheel comprises described blade 410, end ring 402 and former 403, described end ring 402 and described former 403 are located at outside and the inner side of the vane group be made up of described blade 410 respectively, described former 403 is fixed by axle sleeve 404, and described axle sleeve 404 is fixedly connected with described transmission shaft 301.
The diameter of described wind wheel 4 and width ratio are 180:196.This ratio of described wind wheel 4 has best boost performance.
Blade 410 quantity of described wind wheel 4 is 85-105 sheet.The density of described blade 410 is one of important indicator determining centrifugal blower performance equally, and described blade 410 makes centrifugal blower have good performance in this quantitative range.
As shown in Figure 5, two intake grills of described spiral case 2 are located at the both sides of described wind wheel 4 axis respectively, and described intake grill is provided with diminishing baffle liner 203 from outside to inside, plays the effect of diffusion.
The exhaust outlet of described spiral case 2 is located at described base 1, and described exhaust outlet is provided with the diffusion mouth 204 of outward-dipping 3 °-5 °, and described diffusion mouth 204 is integral type structure with described spiral case 2.The outer incline of 3 °-5 ° of described diffusion mouth 204 has best diffusion effect, and described diffusion mouth 204 and the integral structure of described spiral case 2 reduce the volume of described diffusion mouth 204.
As shown in Figure 2 to Figure 3, described spiral case 2 comprises side cover 201 and encloses lid 202, encloses the button hole of lid 202 described in the fastener of described side cover 201 passes, and left-hand thread residence is stated and enclosed lid 202.Compared with welded structure, left-hand thread structure can avoid rosin joint, dry joint and oxidizable shortcoming, increases the working life of centrifugal blower.
The length of described spiral case 2 is 240mm-270mm.
Be provided with insulation board between described motor 3 and described base 1, fixing described motor 3 uses insulating bush to completely cut off with the screw of described base 1 and opens, effectively prevent described motor 3 from leaking electricity.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (10)
1. the centrifugal blower of a Leaf Conductance chute noise reduction, comprise base, spiral case, motor and wind wheel, described motor is double extension shaft formula quadrupole motor, two transmission shaft is individually fixed in the wind wheel in described spiral case, described spiral case and described motor are fixed on described base, it is characterized in that: described blade comprises main body and is located at the assembly department at main body two ends, described main body is by rectangular raw material line centered by the long limit of one, two broadside counterrotatings form, and one of them side of described blade or two sides are provided with multiple guiding gutter.
2. the centrifugal blower of a kind of Leaf Conductance chute noise reduction according to claim 1, is characterized in that: described wind wheel is by two single wheel axles to being formed by fixedly connecting, and the blade of described two single-wheels staggers mutually.
3. the centrifugal blower of a kind of Leaf Conductance chute noise reduction according to claim 2, it is characterized in that: described single-wheel comprises described blade, end ring and former, described end ring and described former are located at outside and the inner side of the vane group be made up of described blade respectively, described former is fixed by axle sleeve, and described axle sleeve is fixedly connected with described transmission shaft.
4. the centrifugal blower of a kind of Leaf Conductance chute noise reduction according to claim 3, is characterized in that: the diameter of described wind wheel and width ratio are 180:196.
5. the centrifugal blower of a kind of Leaf Conductance chute noise reduction according to claim 4, is characterized in that: blade 410 quantity of described wind wheel is 85-105 sheet.
6. the centrifugal blower of a kind of Leaf Conductance chute noise reduction according to claim 1, is characterized in that: two intake grills of described spiral case be located at respectively described rotor shaft to both sides, described intake grill is provided with diminishing baffle liner from outside to inside.
7. the centrifugal blower of a kind of Leaf Conductance chute noise reduction according to claim 1, it is characterized in that: the exhaust outlet of described spiral case is located at described base, described exhaust outlet is provided with the diffusion mouth of outward-dipping 3 °-5 °, and described diffusion mouth and described spiral case are integral type structure.
8. the centrifugal blower of a kind of Leaf Conductance chute noise reduction according to claim 1, is characterized in that: described spiral case comprises side cover and enclose lid, encloses the button hole of lid described in the fastener of described side cover passes, and left-hand thread residence is stated and enclosed lid.
9. the centrifugal blower of a kind of Leaf Conductance chute noise reduction according to claim 1, is characterized in that: the length of described spiral case is 240mm-270mm.
10. the centrifugal blower of a kind of Leaf Conductance chute noise reduction according to claim 1, is characterized in that: be provided with insulation board between described motor and described base, and the screw of fixing described motor and described base uses insulating bush to completely cut off and opens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592816.8A CN104533832A (en) | 2014-10-28 | 2014-10-28 | Centrifugal fan with vane guide grooves for noise reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592816.8A CN104533832A (en) | 2014-10-28 | 2014-10-28 | Centrifugal fan with vane guide grooves for noise reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104533832A true CN104533832A (en) | 2015-04-22 |
Family
ID=52849420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410592816.8A Pending CN104533832A (en) | 2014-10-28 | 2014-10-28 | Centrifugal fan with vane guide grooves for noise reduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104533832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201906A (en) * | 2015-08-20 | 2015-12-30 | 莱克电气股份有限公司 | Fixed impeller and motor using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005120877A (en) * | 2003-10-15 | 2005-05-12 | Haruo Yoshida | Transverse flow blower and blade for the same |
| JP2007010259A (en) * | 2005-07-01 | 2007-01-18 | Hitachi Appliances Inc | Air conditioner |
| CN201610861U (en) * | 2010-01-21 | 2010-10-20 | 东莞市金鑫智能机械设备有限公司 | Impeller of centrifugal fan |
| CN103511336A (en) * | 2012-06-30 | 2014-01-15 | 江门市江海区坚尼士微电机厂有限公司 | Efficient energy-saving water pump |
| CN203796620U (en) * | 2014-05-13 | 2014-08-27 | 佛山市盈赛机械设备有限公司 | Efficient air conditioner centrifugal fan |
-
2014
- 2014-10-28 CN CN201410592816.8A patent/CN104533832A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005120877A (en) * | 2003-10-15 | 2005-05-12 | Haruo Yoshida | Transverse flow blower and blade for the same |
| JP2007010259A (en) * | 2005-07-01 | 2007-01-18 | Hitachi Appliances Inc | Air conditioner |
| CN201610861U (en) * | 2010-01-21 | 2010-10-20 | 东莞市金鑫智能机械设备有限公司 | Impeller of centrifugal fan |
| CN103511336A (en) * | 2012-06-30 | 2014-01-15 | 江门市江海区坚尼士微电机厂有限公司 | Efficient energy-saving water pump |
| CN203796620U (en) * | 2014-05-13 | 2014-08-27 | 佛山市盈赛机械设备有限公司 | Efficient air conditioner centrifugal fan |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201906A (en) * | 2015-08-20 | 2015-12-30 | 莱克电气股份有限公司 | Fixed impeller and motor using same |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150422 |
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| WD01 | Invention patent application deemed withdrawn after publication |