CN201679745U - Low-noise axial flow fan for cooling air conditioner - Google Patents
Low-noise axial flow fan for cooling air conditioner Download PDFInfo
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- CN201679745U CN201679745U CN2010201430254U CN201020143025U CN201679745U CN 201679745 U CN201679745 U CN 201679745U CN 2010201430254 U CN2010201430254 U CN 2010201430254U CN 201020143025 U CN201020143025 U CN 201020143025U CN 201679745 U CN201679745 U CN 201679745U
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Abstract
A low-noise axial flow fan for cooling an air conditioner comprises a motor (2), a hub (3), a drum (5) and blades (1), wherein the blades (1) are arranged on the hub (3); the center of the hub (3) is fixed with an output shaft (22) of the motor (2); and the blades (1) and the hub (3) are arranged in an inner cavity of the drum (5). The low-noise axial flow fan is characterized in that the tail part of the motor (2) is arranged in the middle position of the end face of an air outlet of the drum (5); and the motor (2) is fixed with the drum (5) through a support (21). Compared with the prior art, the utility model has the advantages that no object is existed at an air inlet of the fan for influencing the air inlet area and the air inlet airflow, therefore, the airflow is guided into an impeller in the drum to the maximum extent, the working capacity of the fan is improved, and the air volume is effectively increased; in addition, no barrier is existed at the air inlet of the drum for influencing the airflow, the inlet eddy current is avoided at the inlet of the drum, the airflow distribution is uniform, therefore, the noise is reduced; furthermore, no support object is arranged at the air inlet of the drum, therefore, the air outlet volume of the fan is further increased, and the energy-saving effect is further improved.
Description
Technical field
The utility model relates to a kind of axial-flow blower technical field, especially refers to a kind of energy-saving low-noise air-conditioning cooling axial-flow blower.
Background technique
Along with the develop rapidly of national economic development, the use of air-conditioning system is day by day popularized.Air-conditioning condenser is a very important constituent element in the whole air-conditioning system, and the quality of the special-purpose cooling blower performance of condenser directly causes the operational effect of air-conditioning system, the low noise axial fan of air-conditioning condenser special use require compact dimensions, light and handy, better aerodynamic characteristics and acoustics index arranged.The aeroperformance of impeller and acoustics index are a pair of implacable contradiction, how effectively to solve, and the low noise axial fan of air-conditioning condenser special use has been proposed new requirement.The applicant proposes the Chinese utility model patent that a name is called " energy-saving low-noise air-conditioning cooling axial-flow blower " on May 9th, 2007 for this reason, its structure includes motor, wheel hub, air duct, support and blade, and described blade and wheel hub are arranged in the inner chamber of air duct, blade is the wide interior string narrow structure of exterior string, the center of gravity on line that it is characterized in that its each cross section of described blade is the spatial warping line, and has whole stamping forming cyclic reinforcing rib on the blade face of described blade.The advantage of this model utility is effectively to have improved the rigidity and the intensity of impeller, has reduced the deformable blade problem that impeller produces again simultaneously in rotary course, prevents that eddy current from producing, and guarantees the good aerodynamic quality of blade; The control of interior string place established angle helps preventing that gas is in the root separation of flow, the reasonable control of interior exterior string established angle prevents the Radial Flow of air-flow and reduces secondary flow, make this blower fan not only possess energy-conservation, noise is low, but also have the characteristic that prevents blade deformation, thereby prolonged the working life of blower fan effectively.But shortcoming is: be the noise that influences each other and cause by between rotary blade and near the static part because of the fan operation noise, this fan motor support and motor fuselage are in the air inlet place as static element, can influence the air-flow of air inlet, produce inlet vortex, make air-flow inhomogeneous, it is big that noise becomes, and support and motor body volume also can influence incoming air area, cause air quantity to reduce, energy-saving effect is reduced; Also have,, can make the blower fan volume become big, increase cost of transportation because motor and support are in the air inlet place.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of low noise air-conditioning energy-conservation, that noise is low, volume is little and air output is big to cool off axial-flow blower at above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: this low noise air-conditioning cooling axial-flow blower, include motor, wheel hub, air duct, blade, described blade is arranged on the wheel hub, and the output shaft of wheel hub center and motor fixes, described blade and wheel hub are arranged in the inner chamber of air duct, it is characterized in that: the afterbody of described motor is positioned at the exhaust outlet end face medium position of air duct, and motor fixes by support and air duct.
As improvement, the design of the intake grill of described air duct is the big horn-like arcuate structure of oral area, thereby makes air-flow enter air duct smoothly, can not only reduce noise, and air inflow is bigger.
Improve, the diameter of described air duct intake grill and the fan blade of being made up of wheel hub and blade be the ratio d1 of formed outer diameter when rotated: d2=1.2～1.3: 1.05～1.08 again; And the exhaust outlet of described air duct is the little conical surface in the big inside of oral area, the cross section tapering of this conical surface is 20～45 °, the diameter of the intake grill of described air duct is greater than the exhaust outlet diameter, and above-mentioned this design further reduces noise again and improved the air output of blower fan.
As further improvement, to be the wide and interior string of exterior string narrow for every blade in the described blade, and the blade that is positioned at the exterior string position is provided with streamline and Extreme breadth radially is the wing flap of 8～15mm; Described wing flap extends to blade exterior string rear end from blade tip import distance for 5～10% of outer chord length always, and every vane trailing edge adopts the zigzag fashion that can reduce Rotation Noise; Angle between the line of centres of the center of gravity line of described blade and interior string focus point and wheel hub is 21～37 degree, string setting angle b in the blade profile of described blade
1≤ 45 °, and the difference of the blade profile setting angle of the interior string of described blade and exterior string is b
1-b
2≤ 13 °, and the projector distance of centroid of section line on the output shaft of motor of described blade is 3%～7% of impeller diameter, above-mentioned this design reduces noise once more and has improved the air output of blower fan.
Improve, described support can be preferably four again, and an end of these four supports is individually fixed on the end face of motor, and the other end of these four supports radially distributes and is fixed on the corresponding end-faces of air duct exhaust outlet; Described air duct is fixed on the base plate, certainly air duct and base plate can be set to the overall structure that integral production forms, specifically can decide by designing requirement, and be provided with guard at the exhaust outlet place of air duct, this guard can be welded to each other the integrative-structure that forms by welding and support, and whether one can be decided according to specific requirement certainly.This design makes blower fan structure more firm, uses saferly, and appearance is more neat and artistic.
Compared with prior art, the afterbody of the utility model employing motor is positioned at the exhaust outlet end face medium position of air duct, and motor fixes by support and air duct.The advantage of this design is at the air inlet place, the object of have no effect incoming air area and air intake air-flow, thus farthest steering flow enters impeller place in the air duct, has improved the acting ability of blower fan, has effectively increased air quantity; Also have, the fan operation noise is to cause by influencing each other between rotary blade and near the static part, the object of incoming air area and air intake air-flow because this blower fan has no effect at the intake grill place of air duct, do not have inlet vortex produces at the intake grill place of air duct, air-flow is evenly distributed, thereby noise diminish; Also have, because of the intake grill place at air duct does not have supporter, thereby further promoted the charge air flow of air duct, the air output of blower fan is further increased, energy-saving effect further improves; Also have,, can not only make the blower fan volume do forr a short time, and transportation is also more convenient because the intake grill of air duct does not have supporter; Also have,, increase the diffusing opening that angle is 20～45 degree, the static pressure efficiency of blower fan is improved once more in the air duct outlet port because air duct slip ring diameter is d1: d2=1.2～1.3: 1.05～1.08; Be once more, fan blade adopts zigzag fashion at trailing edge, can reduce eddy current, increase the trailing edge turbulence scale, quicken the decay vortex strip, reduced noise again, and be provided with fairshaped wing flap in blade exterior string position, and can form the wing tip eddy current at exterior string, the eddy current of peeling off with adjacent blades offsets, reduce eddy current, reduced noise.
Description of drawings
Fig. 1 is the sectional structure schematic representation of the utility model embodiment's fan blade;
Fig. 2 is that the blower fan among Fig. 1 is fixed in the perspective view on the base plate;
Fig. 3 is the air duct sectional view among Fig. 1;
Fig. 4 is the structural representation of blade installation on wheel hub among Fig. 1;
Fig. 5 is the structural representation of blade setting angle among Fig. 1;
Fig. 6 is the structural representation of blade among Fig. 1;
Fig. 7 is the structural representation of blade and hub positions relation among Fig. 1 (part is omitted);
Fig. 8 is the structural representation of blade setting angle among Fig. 1;
Fig. 9 is the projection drawing of fan blade among Fig. 1;
Figure 10 is the stereogram of fan blade among Fig. 1.
Embodiment
Embodiment is described in detail the utility model below in conjunction with accompanying drawing.
Extremely shown in Figure 10 as Fig. 1, the low noise air-conditioning cooling axial-flow blower of present embodiment, include motor 2, wheel hub 3, air duct 5, blade 1, described blade 1 is arranged on the wheel hub 3, and the output shaft 22 of wheel hub 3 centers and motor 2 fixes, described blade 1 and wheel hub 3 are arranged in the inner chamber of air duct 5, the afterbody of described motor 2 is positioned at the exhaust outlet end face medium position of air duct 5, and motor 2 fixes by support 21 and air duct 5, and the air duct 5 of this blower fan is designed to: intake grill is the big horn-like arcuate structure of oral area, and the ratio d1 of the diameter d 1 of air duct 5 intake grills and the formed when rotated outer diameter d2 of fan blade that is formed by wheel hub 3 and blade 1: d2=1.2～1.3: 1.05～1.08, the exhaust outlet of air duct 5 is the little conical surface 51 in the big inside of oral area, the cross section tapering a of conical surface 51 be the diameter d 1 of intake grill of 20～45 ° and air duct 5 greater than the structure of exhaust outlet diameter d 3, reduce the noise of blower fan effectively.Extremely shown in Figure 10 as Fig. 4, the blade 1 of this blower fan is designed to: it is narrow that every blade 1 is the wide and interior string of exterior string 13 14, and the blade 1 that is positioned at exterior string 13 positions is provided with streamline and Extreme breadth H radially is the wing flap 15 of 8～15mm, this wing flap 15 is that 5～10% of exterior string 13 length extend to blade exterior string 13 rear ends always from blade tip 16 import distance P, and the trailing edge 12 of every blade 1 adopts the zigzag fashion that can reduce Rotation Noise. And the angle b between the line of centres 11 of the center of gravity line 17 of blade 1 and interior string 14 focus points and wheel hub 2 is 21～37 degree, string setting angle b in the blade profile of blade 1
1≤ 45 °, and the difference of the blade profile setting angle of the interior string 14 of described blade 1 and exterior string 13 is b
1-b
2≤ 13 °, and the projector distance L of the centroid of section line 17 of described blade 1 on the output shaft 31 of motor 2 is 3%～7% the structure of impeller diameter d2, further played energy-conservation and reduced the effect of noise.The support 21 of present embodiment is chosen as four, and an end of these four supports 21 is individually fixed on the end face of motor 2, and the other end of these four supports 21 radially distributes and is fixed on the corresponding end-faces of air duct 5 exhaust outlets.Certainly, support 21 also can be more or less, specifically can decide by designing requirement.Air duct 5 is fixed on the base plate 6, and is provided with guard 4 at the exhaust outlet place of air duct 5, thereby makes blower fan structure more firm, uses safer.
Claims (10)
1. a low noise air-conditioning cools off axial-flow blower, include motor (2), wheel hub (3), air duct (5), blade (1), described blade (1) is arranged on the wheel hub (3), and the output shaft (22) of wheel hub (3) center and motor (2) fixes, described blade (1) and wheel hub (3) are arranged in the inner chamber of air duct (5), it is characterized in that: the afterbody of described motor (2) is positioned at the exhaust outlet end face medium position of air duct (5), and motor (2) fixes by support (21) and air duct (5).
2. low noise air-conditioning cooling axial-flow blower according to claim 1, it is characterized in that: the intake grill of described air duct (5) is the big horn-like arcuate structure of oral area.
3. low noise air-conditioning according to claim 2 cooling axial-flow blower is characterized in that: the ratio d1 of the diameter (d1) of described air duct (5) intake grill and the formed when rotated outer diameter of being made up of wheel hub (3) and blade (1) of fan blade (d2): d2=1.2～1.3: 1.05～1.08.
4. low noise air-conditioning cooling axial-flow blower according to claim 3, it is characterized in that: the exhaust outlet of described air duct (5) is the little conical surface (51) in the big inside of oral area, and the cross section tapering (a) of this conical surface (51) is 20～45 °.
5. low noise air-conditioning cooling axial-flow blower according to claim 3, it is characterized in that: the diameter (d1) of the intake grill of described air duct (5) is greater than exhaust outlet diameter (d3).
6. according to the described low noise air-conditioning cooling of arbitrary claim in the claim 1 to 5 axial-flow blower, it is characterized in that: it is narrow that every blade (1) is the wide and interior string of exterior string (13) (14) in the described blade (1), and the blade (1) that is positioned at exterior string (13) position is provided with streamline and Extreme breadth radially (H) is the wing flap (15) of 8～15mm.
7. low noise air-conditioning cooling axial-flow blower according to claim 6, it is characterized in that: described wing flap (15) extends to blade exterior string (13) rear end from blade tip (16) import distance (P) for 5～10% of exterior string (13) length always, and the trailing edge (12) of every blade (1) adopts the zigzag fashion that can reduce Rotation Noise.
8. according to the described low noise air-conditioning cooling of arbitrary claim in the claim 1 to 5 axial-flow blower, it is characterized in that: the angle (b) between the line of centres (11) of the center of gravity line (17) of described blade (1) and interior string (14) focus point and wheel hub (2) is 21～37 degree, string setting angle b in the blade profile of described blade (1)
1≤ 45 °, and the difference of the blade profile setting angle of the interior string (14) of described blade (1) and exterior string (13) is b
1-b
2≤ 13 °, and the projector distance (L) of the centroid of section line (17) of described blade (1) on the output shaft (31) of motor (2) is 3%～7% of impeller diameter (d2).
9. according to the described low noise air-conditioning cooling of arbitrary claim in the claim 1 to 5 axial-flow blower, it is characterized in that: described support (21) is four, one end of these four supports (21) is individually fixed on the end face of motor (2), and the other end of these four supports (21) radially distributes and is fixed on the corresponding end-faces of air duct (5) exhaust outlet.
10. according to the described low noise air-conditioning cooling of arbitrary claim in the claim 1 to 5 axial-flow blower, it is characterized in that: described air duct (5) is fixed on the base plate (6), and is provided with guard (4) at the exhaust outlet place of air duct (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201430254U CN201679745U (en) | 2010-03-29 | 2010-03-29 | Low-noise axial flow fan for cooling air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201430254U CN201679745U (en) | 2010-03-29 | 2010-03-29 | Low-noise axial flow fan for cooling air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201679745U true CN201679745U (en) | 2010-12-22 |
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ID=43344789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201430254U Expired - Lifetime CN201679745U (en) | 2010-03-29 | 2010-03-29 | Low-noise axial flow fan for cooling air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201679745U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486083A (en) * | 2013-09-17 | 2014-01-01 | 浙江泰风科技有限公司 | Fan blade wheel |
| CN104061187A (en) * | 2014-06-30 | 2014-09-24 | 珠海格力电器股份有限公司 | Axial flow fan blade, axial flow fan and air conditioner |
| CN105278637A (en) * | 2015-11-17 | 2016-01-27 | 内蒙古科技大学 | Cabinet with dedusting device |
| CN107489650A (en) * | 2017-09-20 | 2017-12-19 | 江苏富丽华通用设备股份有限公司 | A kind of axial flow blower |
| CN109322852A (en) * | 2017-07-31 | 2019-02-12 | 芜湖美的厨卫电器制造有限公司 | Impeller, compound blower and the gas heater with it |
| WO2019136939A1 (en) * | 2018-01-13 | 2019-07-18 | 广东美的环境电器制造有限公司 | Axial fan blade, axial fan blade assembly, and axial fan duct assembly |
| EP3726061A1 (en) * | 2018-01-13 | 2020-10-21 | GD Midea Environment Appliances MFG Co., Ltd. | Air duct assembly for axial fan |
| CN116398471A (en) * | 2023-04-11 | 2023-07-07 | 威海克莱特菲尔风机股份有限公司 | Sweepforward blade impeller and constitute axial fan |
-
2010
- 2010-03-29 CN CN2010201430254U patent/CN201679745U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486083A (en) * | 2013-09-17 | 2014-01-01 | 浙江泰风科技有限公司 | Fan blade wheel |
| CN104061187A (en) * | 2014-06-30 | 2014-09-24 | 珠海格力电器股份有限公司 | Axial flow fan blade, axial flow fan and air conditioner |
| CN105278637A (en) * | 2015-11-17 | 2016-01-27 | 内蒙古科技大学 | Cabinet with dedusting device |
| CN109322852A (en) * | 2017-07-31 | 2019-02-12 | 芜湖美的厨卫电器制造有限公司 | Impeller, compound blower and the gas heater with it |
| CN109322852B (en) * | 2017-07-31 | 2024-04-12 | 芜湖美的厨卫电器制造有限公司 | Impeller, compound fan and gas water heater with same |
| CN107489650A (en) * | 2017-09-20 | 2017-12-19 | 江苏富丽华通用设备股份有限公司 | A kind of axial flow blower |
| WO2019136939A1 (en) * | 2018-01-13 | 2019-07-18 | 广东美的环境电器制造有限公司 | Axial fan blade, axial fan blade assembly, and axial fan duct assembly |
| EP3726061A1 (en) * | 2018-01-13 | 2020-10-21 | GD Midea Environment Appliances MFG Co., Ltd. | Air duct assembly for axial fan |
| EP3726061A4 (en) * | 2018-01-13 | 2021-02-24 | GD Midea Environment Appliances MFG Co., Ltd. | Air duct assembly for axial fan |
| EP3739218A4 (en) * | 2018-01-13 | 2021-03-17 | GD Midea Environment Appliances MFG Co., Ltd. | Axial fan blade, axial fan blade assembly, and axial fan duct assembly |
| CN116398471A (en) * | 2023-04-11 | 2023-07-07 | 威海克莱特菲尔风机股份有限公司 | Sweepforward blade impeller and constitute axial fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 312500 Xinchang provincial high tech Zone, Shaoxing, Zhejiang Patentee after: Zhejiang Kemao Industrial Co., Ltd. Address before: 312500 Xinchang Zhejiang provincial hi tech Zone Xinchang Technology & Trade Industry Co., Ltd. Patentee before: Xinchang County KEMAO Industrial Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101222 |
|
| CX01 | Expiry of patent term |