CN202391808U - Low-noise axial flow air wheel - Google Patents
Low-noise axial flow air wheel Download PDFInfo
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- CN202391808U CN202391808U CN2011205185398U CN201120518539U CN202391808U CN 202391808 U CN202391808 U CN 202391808U CN 2011205185398 U CN2011205185398 U CN 2011205185398U CN 201120518539 U CN201120518539 U CN 201120518539U CN 202391808 U CN202391808 U CN 202391808U
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- inlet edge
- blade
- blade inlet
- wheel
- noise
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Abstract
The utility model relates to a low-noise axial flow air wheel, comprising a plurality of blades arranged on a wheel hub, wherein the plurality of blades are equally or unequally distributed on the wheel hub by taking the rotating central axis of the air wheel as the center. The low-noise axial flow wind wheel is characterized in that the shape of the front-edge middle section of each blade is a smooth wave-shaped space curve. When the air wheel rotates, the front edges of the blades face to airflow, a plurality of separation vortexes with small sizes are formed on force sucking surfaces of the blades due to a smooth wave-shaped appearance, the thinned separation vortexes have less energy, and the generated eddy noise is low when the air wheel is broken, so that the low-noise axial flow wind wheel is lower in noise compared with the conventional axial flow wind wheel.
Description
Technical field
The utility model relates to a kind of low noise axial-flow windwheel, is applicable to the mechanical ventilation field, is particularly useful for the air conditioner outdoor machine group.
Background technique
The axial flow fans that adopt in the air conditioner outdoor machine group, for the air of participating in heat exchange in the heat exchanger provides power, the size of its air quantity directly influences the effect of heat exchange, thereby influences the performance and the Energy Efficiency Ratio of air-conditioning more.Simultaneously, the noise of axial-flow windwheel generation also is one of the main noise of air conditioner outdoor machine group source.
As shown in Figure 4, the blade inlet edge of the former axial-flow windwheel that axial flow fan adopted is the space curve of a fairing.Wind wheel when rotated, a side of cutting air-flow on the blade at first is called " blade inlet edge ".When this axial flow wind wheel with fairing blade inlet edge rotates, on the suction surface of blade, form larger-size separation whirlpool easily, significant amount of energy is contained in this separation whirlpool, can produce higher aerodynamic noise when broken.
Chinese patent 200710026747.4 has been described a kind of cloverleaf axial-flow windwheel that is applicable to the air conditioner outdoor machine group.This patent is employed in the design of the trailing edge zone of blade to blade inlet edge airintake direction depression; Change the pressure distribution of blade; Make blade high pressure draught part flow to the blade low pressure surface in advance; Reduce boundary layer on the whole and separate, and make the blade edge interlayer before arriving at blade trailing edge, become turbulent flow, can effectively reduce eddy current noise and rotor tail.But this patent has only related to the research of trailing edge shape, and the design of blade inlet edge shape is set forth.
Summary of the invention
The purpose of the utility model is to provide a kind of and suppresses wind wheel eddy current noise through refinement separation whirlpool; Make the larger-size separation whirlpool that forms on the blade suction surface be refined into the low noise axial-flow windwheel in the less separation whirlpool of a plurality of sizes, to overcome deficiency of the prior art.
A kind of low noise axial-flow windwheel by this purpose design; Comprise a plurality of blades that are arranged on the wheel hub; A plurality of blades with the rotating center axis of wind wheel be the center equidistantly or unequal-interval be distributed on the wheel hub, it is characterized in that the waveform space curve that being shaped as of blade inlet edge intermediate section is level and smooth.
The external diameter of axial-flow windwheel is defined as D, and the diameter of wheel hub is defined as d, and setting (D-d)/2 is blades height R
1, the position A place circle diameter that the waveform of blade inlet edge melts the beginning is defined as D
1, (D is arranged
1-d)/2=(0～0.5) R
1The position B place circle diameter of the waveform end of blade inlet edge waveformization part is defined as D
2, (D is arranged
2-d)/2=(0.7～1.0) R
1
With the distance definition between two salient points of said blade inlet edge waveformization part is c
1, c
2, c
3... C
N-1(n is the number of depression shape in the wave modeization, n>=2), the degree of depth of sunk part is defined as b between two salient points
1, b
2, b
3... B
N-1(n>=2), b
N-1With c
N-1Ratio is defined as the relative depth δ (δ=b of depression
N-1/ c
N-1), can play the effect that refinement separates the whirlpool for making corrugated blade inlet edge, should guarantee δ＞0.1.
Said blade inlet edge waveformization part be shaped as the waveform space curve, the shape of blade inlet edge waveformization part can also be that a plurality of sickleshapeds, crescent moon, circular arc, V font or broken line shape link to each other, or the combined shaped of several above shapes.
The utility model advantage compared with prior art is: the effective separation whirlpool on the refinement blade suction surface, reduce the energy intensity that separates the whirlpool, the eddy current noise that suppresses wind wheel, thereby effectively reduce the wind wheel noise.It is applicable to the mechanical ventilation field, is particularly useful for the air conditioner outdoor machine group.
Description of drawings
Fig. 1 is the utility model one embodiment's perspective view;
Fig. 2 is the utility model diameter definition structure schematic representation;
Fig. 3 is the degree of depth definition structure schematic representation of sunk part between distance and two salient points between two salient points of the utility model blade inlet edge wave mode part;
Fig. 4 is conventional axial-flow windwheel structural representation;
Fig. 5 is shaped as an example structure schematic representation of broken line shape for the utility model blade inlet edge waveform depression number n=5 and blade inlet edge;
Fig. 6 is shaped as an example structure schematic representation of broken line shape and circular arc combined shaped for the utility model blade inlet edge waveform depression number n=3 and blade inlet edge;
Fig. 7 is applied to an example structure schematic representation of air conditioner outdoor machine group for the utility model;
Fig. 8 is relative depth δ=0.5～2.0 of the utility model blade inlet edge waveform depression number n=4 and depression) be applied to the embodiment's of air conditioner outdoor machine group test data correlation curve figure.
Among the figure: 1 is axial-flow windwheel, and 2 is wheel hub, and 3 is blade; 3a is a blade inlet edge, and 3b is a blade inlet edge wave mode part, and 4 is motor and electric machine support; 5 is outdoor heat converter, and 6 is frame set, and 7 is electric-controlled parts; 8 is the pipe arrangement assembly, and 9 is that compressor, 10 is central diaphragm, and 11 is the air conditioner outdoor machine group.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Referring to Fig. 1; Axial-flow windwheel 1 comprises the blade 3 that is arranged on the wheel hub 2; Three blades 3 are of similar shape and setting angle; Three blades 3 are that the center is distributed on the wheel hub 2 with the rotating center axis of wind wheel 1, and the leading edge intermediate section of blade 3 is blade inlet edge waveform part 3b, and blade inlet edge waveform part 3b is shaped as the waveform space curve; The shape of blade inlet edge waveform part 3b can also be that a plurality of sickleshapeds, crescent moon, circular arc, V font or broken line shape link to each other, or the combined shaped of several above shapes.
Referring to Fig. 2-Fig. 3, the external diameter of axial-flow windwheel 1 is defined as D, the diameter of wheel hub 2 is defined as d, and setting (D-d)/2 is blade height R
1, the position A place circle diameter that blade inlet edge waveform 3a begins is defined as D
1, (D is arranged
1-d)/2=(0～0.5) R
1The position B place circle diameter of the waveform end of blade inlet edge waveform part 3b is defined as D
2, (D is arranged
2-d)/2=(0.7～1.0) R
1With the distance definition between two salient points of blade inlet edge waveform part 3b is c
1, c
2, c
3... C
N-1The degree of depth of sunk part 3b is defined as b between (n>=2), two salient points
1, b
2, b
3... B
N-1(n>=2), b
N-1With c
N-1Ratio is defined as the relative depth δ (δ=b of depression
N-1/ c
N-1).Blade inlet edge waveform 3a initial position A place circle diameter D
1At (0～0.5) R
1Interval, end position B place circle diameter D
2At (0.7～1.0) R
1Interval; And number n>=2 of depression shape, the relative depth δ of depression are when 0.5～1.0 interval, and in axial-flow windwheel 1 rotary course, blade inlet edge is met to air-flow; Wave blade leading edge 3a makes and forms the less separation whirlpool of a plurality of sizes on the blade suction surface; This less by the contained energy in the separation whirlpool of refinement, the eddy current noise that produces when broken is lower, thereby effectively reduces the wind wheel noise.
Referring to Fig. 4-Fig. 6, Fig. 4 is conventional axial-flow windwheel structural representation; Fig. 5 is shaped as an example structure schematic representation of broken line shape for the utility model blade inlet edge waveform depression number n=5 and blade inlet edge; Fig. 6 is shaped as an example structure schematic representation of broken line shape and circular arc combined shaped for the utility model blade inlet edge waveform depression number n=3 and blade inlet edge.Under the air quantity situation, when blade inlet edge waveform 3a melts beginning position A place circle diameter D
1At (0～0.5) R
1Interval, end position B place circle diameter D
2At (0.7～1.0) R
1The interval, and the relative depth δ of depression shape depression is 0.5～1.0 when interval, and Fig. 5 and low noise axial-flow windwheel shown in Figure 6 have lower level of noise than conventional axial-flow windwheel shown in Figure 4.
Referring to Fig. 7; Air conditioner outdoor machine group 11 accommodates axial-flow windwheel 1, motor and the electric machine support 4 with said structure characteristic, the outdoor unit heat exchanger 5 that is the L font, electric-controlled parts 7, pipe arrangement assembly 8 and compressor 9 in frame set 6, isolate with central diaphragm 10 between axial-flow windwheel 1 and the compressor 9.This axial-flow windwheel 1 can effectively reduce the air-out noise when real-world operation, adopt the air conditioner outdoor machine group of the utility model also can have lower noise.Referring to Fig. 8, under the identical situation of air quantity, adopt the noise of the air conditioner outdoor machine group of the utility model to hang down 1.0 dB～2.0dB than the noise that adopts traditional axial-flow windwheel.
Claims (4)
1. low noise axial-flow windwheel; Comprise a plurality of blades (3) that are arranged on the wheel hub; A plurality of blades (3) with the rotating center axis of wind wheel be the center equidistantly or unequal-interval be distributed on the wheel hub (2), it is characterized in that the level and smooth waveform space curve that is shaped as of blade (3) leading edge intermediate section.
2. low noise axial-flow windwheel according to claim 1 is characterized in that the external diameter of axial-flow windwheel (1) is defined as D, and the diameter of wheel hub (2) is defined as d, and setting (D-d)/2 is the height R of blade (3)
1, the position A place circle diameter that the waveform of blade inlet edge (3a) melts the beginning is defined as D
1, (D is arranged
1-d)/2=(0～0.5) R
1The position B place circle diameter of the waveform end of blade inlet edge waveformization part (3b) is defined as D
2, (D is arranged
2-d)/2=(0.7～1.0) R
1
3. according to claim 1 or 2 described low noise axial-flow windwheels, it is characterized in that with the distance definition between two salient points of said blade inlet edge waveformization part (3b) be c
1, c
2, c
3... C
N-1(n is the number of depression shape in the wave modeization, n>=2), the degree of depth of sunk part is defined as b between two salient points
1, b
2, b
3... B
N-1(n>=2), b
N-1With c
N-1Ratio is defined as the relative depth δ (δ=b of depression
N-1/ c
N-1), can play the effect that refinement separates the whirlpool for making corrugated blade inlet edge (3a), should guarantee δ＞0.1.
4. according to claim 1 or 2 or 3 described low noise axial-flow windwheels; What it is characterized in that said blade inlet edge waveformization part (3b) is shaped as the waveform space curve; The shape of blade inlet edge waveformization part (3b) can also be that a plurality of sickleshapeds, crescent moon, circular arc, V font or broken line shape link to each other, or the combined shaped of several above shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205185398U CN202391808U (en) | 2011-12-13 | 2011-12-13 | Low-noise axial flow air wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205185398U CN202391808U (en) | 2011-12-13 | 2011-12-13 | Low-noise axial flow air wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202391808U true CN202391808U (en) | 2012-08-22 |
Family
ID=46666738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205185398U Expired - Lifetime CN202391808U (en) | 2011-12-13 | 2011-12-13 | Low-noise axial flow air wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202391808U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927045A (en) * | 2012-11-16 | 2013-02-13 | 合肥美的荣事达电冰箱有限公司 | Axial flow fan and refrigerator with same |
| CN105332948A (en) * | 2015-10-23 | 2016-02-17 | 上海交通大学 | Improved compressor blade and achieving method thereof |
| CN107100891A (en) * | 2017-06-23 | 2017-08-29 | 广东美的制冷设备有限公司 | Axial-flow windwheel, air-conditioner outdoor unit and air conditioner |
| CN107989827A (en) * | 2017-11-23 | 2018-05-04 | 广东美的制冷设备有限公司 | Axial-flow windwheel and air conditioner |
| CN108167208A (en) * | 2018-03-07 | 2018-06-15 | 常州祥明智能动力股份有限公司 | A kind of axial flow blower |
| CN108194387A (en) * | 2018-03-07 | 2018-06-22 | 常州祥明智能动力股份有限公司 | Axial flow blower |
| CN108591119A (en) * | 2018-03-07 | 2018-09-28 | 常州祥明智能动力股份有限公司 | A kind of axial flow fan vane wheel |
| EP3591238A1 (en) * | 2018-07-05 | 2020-01-08 | Xylem Europe GmbH | Axial flow fan and fan guard for a motor cooling assembly |
| EP3859164A4 (en) * | 2018-09-25 | 2022-06-15 | York Guangzhou Air Conditioning and Refrigeration Co., Ltd. | Blade and axial flow impeller using same |
-
2011
- 2011-12-13 CN CN2011205185398U patent/CN202391808U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927045A (en) * | 2012-11-16 | 2013-02-13 | 合肥美的荣事达电冰箱有限公司 | Axial flow fan and refrigerator with same |
| CN105332948A (en) * | 2015-10-23 | 2016-02-17 | 上海交通大学 | Improved compressor blade and achieving method thereof |
| CN105332948B (en) * | 2015-10-23 | 2017-08-15 | 上海交通大学 | A kind of implementation method of the bionical movable vane of compressor |
| CN107100891A (en) * | 2017-06-23 | 2017-08-29 | 广东美的制冷设备有限公司 | Axial-flow windwheel, air-conditioner outdoor unit and air conditioner |
| CN107989827B (en) * | 2017-11-23 | 2024-02-20 | 广东美的制冷设备有限公司 | Axial flow wind wheel and air conditioner |
| CN107989827A (en) * | 2017-11-23 | 2018-05-04 | 广东美的制冷设备有限公司 | Axial-flow windwheel and air conditioner |
| CN108167208A (en) * | 2018-03-07 | 2018-06-15 | 常州祥明智能动力股份有限公司 | A kind of axial flow blower |
| CN108194387A (en) * | 2018-03-07 | 2018-06-22 | 常州祥明智能动力股份有限公司 | Axial flow blower |
| CN108591119A (en) * | 2018-03-07 | 2018-09-28 | 常州祥明智能动力股份有限公司 | A kind of axial flow fan vane wheel |
| CN108167208B (en) * | 2018-03-07 | 2024-06-14 | 常州祥明智能动力股份有限公司 | Axial flow fan |
| CN108194387B (en) * | 2018-03-07 | 2024-06-14 | 常州祥明智能动力股份有限公司 | Axial flow fan |
| CN108591119B (en) * | 2018-03-07 | 2024-06-18 | 常州祥明智能动力股份有限公司 | Impeller of axial flow fan |
| EP3591238A1 (en) * | 2018-07-05 | 2020-01-08 | Xylem Europe GmbH | Axial flow fan and fan guard for a motor cooling assembly |
| WO2020008007A1 (en) * | 2018-07-05 | 2020-01-09 | Xylem Europe Gmbh | Axial flow fan and fan guard for a motor cooling assembly |
| EP3859164A4 (en) * | 2018-09-25 | 2022-06-15 | York Guangzhou Air Conditioning and Refrigeration Co., Ltd. | Blade and axial flow impeller using same |
| US11572890B2 (en) | 2018-09-25 | 2023-02-07 | Johnson Controls Tyco IP Holdings LLP | Blade and axial flow impeller using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131129 Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: Midea Group Co., Ltd. Address before: 528311, the beautiful headquarters building, 6 beautiful avenue, Beijiao Town, Shunde District, Guangdong, Foshan Patentee before: Meidi Electric Appliances Co., Ltd., Guangdong |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |
|
| CX01 | Expiry of patent term |