CN203584898U - Low-noise high-efficiency central air conditioner outdoor machine cooling axial-flow fan - Google Patents

Low-noise high-efficiency central air conditioner outdoor machine cooling axial-flow fan Download PDF

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Publication number
CN203584898U
CN203584898U CN201320761899.XU CN201320761899U CN203584898U CN 203584898 U CN203584898 U CN 203584898U CN 201320761899 U CN201320761899 U CN 201320761899U CN 203584898 U CN203584898 U CN 203584898U
Authority
CN
China
Prior art keywords
wheel hub
blade
hub
degree
conditioner outdoor
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.)
Withdrawn - After Issue
Application number
CN201320761899.XU
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Chinese (zh)
Inventor
章启忠
沈坤华
张维
周爱进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Yilida Ventilator Co Ltd
Original Assignee
Zhejiang Yilida Ventilator Co Ltd
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Publication date
Application filed by Zhejiang Yilida Ventilator Co Ltd filed Critical Zhejiang Yilida Ventilator Co Ltd
Priority to CN201320761899.XU priority Critical patent/CN203584898U/en
Application granted granted Critical
Publication of CN203584898U publication Critical patent/CN203584898U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a low-noise high-efficiency central air conditioner outdoor machine cooling axial-flow fan. The low-noise high-efficiency central air conditioner outdoor machine cooling axial-flow fan comprises a wind tube, a motor support which is arranged above the wind tube, a motor which is installed on the central position of the motor support, a hub which is connected with a motor rotating shaft and a plurality of blades which are fixed on the hub, wherein the hub comprises a hub liner plate and a shaft sleeve which is welded onto the central position of the hub liner plate; the shaft sleeve is matched with the motor rotating shaft; the periphery of the hub liner plate extends out to form a plurality of hub connecting plates which are uniformly distributed surrounding the shaft sleeve; the hub connecting plate is provided with a plurality of screw holes; the hub connecting plate is twisted in opposite directions from two side edges of an initial part of the hub liner plate when the hub linear plate is extended. By reducing the hub, the wall-surface vortex flow loss is reduced, the airflow rate is reduced, and the noise produced by the airflow can be effectively lowered.

Description

A kind of cooling axial-flow blower of central air-conditioner outdoor unit of low-noise high-efficiency
Technical field
The utility model relates to the cooling axial-flow blower of central air-conditioner outdoor unit of a kind of axial-flow blower, particularly a kind of low-noise high-efficiency.
Background technique
Along with greatly developing of national energy-saving reduction of discharging and popularizing energetically of Energy Efficiency Standard, blower fan producer is to product performance, the requirement of the aspect such as efficiency and noise is more and more higher, especially ten/the height that requires to the cooling axial-flow blower of existing central air-conditioner outdoor unit, but the wheel hub that great majority centre air conditioner outdoor machine axial flow fan for cooling is used is traditional round cartridge type, and the noise of fan operation produces by influencing each other between vane rotary and near parts, impeller is blade and wheel hub composition, when traditional round cartridge type wheel hub is during in air inlet place, can affect the air-flow of intake grill, produce inlet vortex, make air-flow velocity inhomogeneous, thereby cause noise to become large, and hub ratio is larger, useful area while causing air-flow through intake grill and wheel hub reduces, easily cause the result that fan efficiency is lower.
Summary of the invention
The utility model will solve the technical problem that the noise producing when the cooling axial-flow blower of existing central air-conditioner outdoor unit not only causes fan operation due to use traditional round cartridge type wheel hub is large but also fan efficiency is reduced.
The technical scheme in the invention for solving the above technical problem is:
The utility model discloses a kind of cooling axial-flow blower of central air-conditioner outdoor unit of low-noise high-efficiency, comprise air duct, be located at the electric machine support of air duct top, wheel hub and the some blades being fixed on wheel hub that is arranged on the motor of electric machine support central position, is connected with electric machine rotational axis, it is characterized in that: described wheel hub comprises wheel hub interior lining panel, is welded to connect the axle sleeve in wheel hub interior lining panel central position; The running shaft of described axle sleeve and motor matches; Described wheel hub interior lining panel surrounding is extended some wheel hub connecting plates that are evenly distributed centered by axle sleeve; Described wheel hub connecting plate is provided with some screws; The dual-side at initial position when described wheel hub connecting plate extends from wheel hub interior lining panel is along being reverse twist, make wheel hub connecting plate rear end plate body and the wheel hub interior lining panel of wheel hub connecting plate from the smooth transition of surface, initial portion position be angle setting, the angle ranging from 17 degree to 37 degree.
Described blade one side is along being blade, and blade thickness reduces gradually from blade stem to root of blade; Described blade is provided with some perforation corresponding with screw; Described blade shape be wide outside and narrow inside, sweepforward is antecurvature; Described blade angle is 25 degree to 33 degree; Described blade is provided with long-pending superimposing thread, and long-pending superimposing thread is C shape; Palintrope-5, described root of blade place degree, blade stem place is antecurvature 55 degree.
Described air duct comprise upper and lower end angle with and the exhaust outlet of top and the intake grill of below; Described upper and lower end angle is all 90 degree arc round angles, and exhaust outlet diameter is identical with intake grill diameter.
The exhaust outlet of described electric machine support and air duct matches, and electric machine support cross section is M shape.
The beneficial effects of the utility model are:
Compared with prior art, adopt the wheel hub interior lining panel surrounding of the cooling axial-flow blower of central air-conditioner outdoor unit of the low-noise high-efficiency of the utility model structure to extend some equally distributed wheel hub connecting plates, and wheel hub is spatial warping structure, make wheel hub be propeller-like, this structure has effectively been improved the flow field at the root of blade place being fixed on wheel hub connecting plate, more dwindled traditional wind cylinder type wheel hub end wall boundary layer, controlled change circular rector radial pressure gradient, reduced the loss of radial second stream, therefore anti-inlet distortion ability and stall margin are all improved, and effectively increased impeller annulus area, thereby reduced hub ratio, the reducing of hub ratio reduces wall eddy current loss, and reduced the air-flow velocity under declared working condition, therefore pneumatic noise is effectively reduced, and fan efficiency is improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of wheel hub;
Fig. 2 is the structural representation of the cooling axial-flow blower of central air-conditioner outdoor unit of the utility model low-noise high-efficiency;
Fig. 3 is the schematic diagram of wheel hub and blade assembling;
Fig. 4 is the structural representation of electric machine support.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Refer to Fig. 1 to Fig. 4, the utility model provides a kind of cooling axial-flow blower of central air-conditioner outdoor unit of low-noise high-efficiency, comprise air duct (1), be located at the electric machine support (2) of air duct (1) top, be arranged on the motor (3) of electric machine support (2) central position, the wheel hub (5) being connected with electric machine rotational axis (4) and some blades (6) being fixed on wheel hub (5), described wheel hub (5) comprises wheel hub interior lining panel (7), be welded to connect the axle sleeve (8) in wheel hub interior lining panel (7) central position, described axle sleeve (8) matches with the running shaft (4) of motor, described wheel hub interior lining panel (7) surrounding is extended some wheel hub connecting plates (9) that are evenly distributed centered by axle sleeve, described wheel hub connecting plate (9) is provided with some screws (10), the dual-side at the initial position (20) when described wheel hub connecting plate (9) extends from wheel hub interior lining panel is along being reverse twist, make the wheel hub connecting plate rear end plate body (21) of wheel hub connecting plate (9) from the smooth surface transition of initial position (20) and wheel hub interior lining panel (7) be angle setting, the angle ranging from 17 degree to 37 degree, hub ratio is 0.3 to 0.4, and hub ratio numerical value is less, wheel hub of the present utility model (5) is propeller-like, this structure has effectively been improved and has been fixed on the flow field that the root (11) of the blade on wheel hub connecting plate is located, more dwindled traditional wind cylinder type wheel hub end wall boundary layer, controlled change circular rector radial pressure gradient, reduced the loss of radial second stream, therefore anti-inlet distortion ability and stall margin are all improved, and effectively increased impeller annulus area, because hub ratio of the present utility model is dwindled, so wall eddy current loss reduces, and reduced the air-flow velocity under declared working condition, therefore the noise producing due to air-flow has obtained effectively reducing, and fan efficiency is improved.
Described blade (6) one sides are along being blade (19), and blade (19) thickness reduces gradually from blade stem (12) to root of blade (11), described blade (6) is provided with some perforation (13) corresponding with screw (10), with screw, pass perforation (13) and be fixed in the screw (10) on wheel hub connecting plate, thereby blade (6) is fixed on wheel hub (5), that described blade (6) is shaped as is wide outside and narrow inside, sweepforward is antecurvature, described blade angle is 25 degree to 33 degree, described blade (6) is provided with long-pending superimposing thread (14), and long-pending superimposing thread (14) is C shape, described root of blade (11) is located palintrope-5 degree, and blade stem (12) is located antecurvature 55 degree, blade of the present utility model (6) adopts the curved technology of plunderring, and blade one side edge is blade (19), therefore the loss of end wall boundary layer and aerodynamic noise have not only been reduced, and improved the scope of blower fan stable operation, on blade, the long-pending superimposing thread (14) of C shape can effectively reduce the phase difference of noise harmonic component, by the bent angle of blade (6) and the harmonic wave of prostatitis leaf grating viscous wake, match to form suitable phase difference and effectively reduce periodically non-permanent power interaction noise, by the inhomogeneous incoming flow mode of leading edge, reduce interaction noise and effectively reduce the noise on higher harmonics frequency band, reduce the turbulent boundary layer broadband noise causing of pulsing, by the simulation of CFD flow field simulation and ACTRAN noise Simulation simulation replication, proof root of blade (11) is located palintrope-5 degree, blade stem (12) is located antecurvature 55 degree, when the long-pending superimposing thread (14) on blade is C shape, pneumatic effect is best, acoustical behavior the best, impeller adiabatic efficiency is the highest.
Described air duct comprise upper and lower end angle (15,16) with and the exhaust outlet (17) of top and the intake grill (18) of below, described upper and lower end angle (15,16) is all 90 degree arc round angles, and exhaust outlet (17) diameter is identical with intake grill (18) diameter, under installation dimension enabled condition, exhaust outlet (17) diameter is more than or equal to intake grill (18) diameter, is to allow the angle of air duct upper corners (15) to be more than or equal to the angle of angle, lower end (16), adopt 90 degree arc round angle intake methods to reduce to greatest extent inlet loss, charge air flow tissue is optimized, adopt the 90 degree arc round angles modes of giving vent to anger, under the condition allowing at exhaust outlet (17) diameter, and at multiple cooling axial-flow blower assemblage gaps, do not affect under the prerequisite of performance separately, when guaranteeing that air-flow refluxes as far as possible less, can be by suitably controlling exhaust outlet (17) diameter, solve and because exhaust outlet (17) diameter is excessive, cause that problem and central air-conditioner outdoor unit coil pipe that fan outlet (17) air-flow is dispersed reflux and cause the problem that condensation effect is not good because giving vent to anger in the past.
Described electric machine support (2) matches with the exhaust outlet (17) of air duct, electric machine support (2) cross section is M shape, described electric machine support (2) is net cover type, the air-flow that vane rotary produces flows out from the guard of electric machine support, and the high electric machine support (2) in middle low both sides can effectively reduce exhaust outlet air-flow additional drag.

Claims (4)

1. the cooling axial-flow blower of central air-conditioner outdoor unit of a low-noise high-efficiency, comprise air duct, be located at the electric machine support of air duct top, wheel hub and the some blades being fixed on wheel hub that is arranged on the motor of electric machine support central position, is connected with electric machine rotational axis, it is characterized in that: described wheel hub comprises wheel hub interior lining panel, is welded to connect the axle sleeve in wheel hub interior lining panel central position; The running shaft of described axle sleeve and motor matches; Described wheel hub interior lining panel surrounding is extended some wheel hub connecting plates that are evenly distributed centered by axle sleeve; Described wheel hub connecting plate is provided with some screws; The dual-side at initial position when described wheel hub connecting plate extends from wheel hub interior lining panel is along being reverse twist, make wheel hub connecting plate rear end plate body and the wheel hub interior lining panel of wheel hub connecting plate from the smooth transition of surface, initial portion position be angle setting, the angle ranging from 17 degree to 37 degree.
2. the cooling axial-flow blower of central air-conditioner outdoor unit of a kind of low-noise high-efficiency according to claim 1, is characterized in that: described blade one side is along being blade, and blade thickness reduces gradually from blade stem to root of blade; Described blade is provided with some perforation corresponding with screw; Described blade shape be wide outside and narrow inside, sweepforward is antecurvature; Described blade angle is 25 degree to 33 degree; Described blade is provided with long-pending superimposing thread, and long-pending superimposing thread is C shape; Palintrope-5, described root of blade place degree, blade stem place is antecurvature 55 degree.
3. the cooling axial-flow blower of central air-conditioner outdoor unit of a kind of low-noise high-efficiency according to claim 1, is characterized in that: described air duct comprise upper and lower end angle with and the exhaust outlet of top and the intake grill of below; Described upper and lower end angle is all 90 degree arc round angles, and exhaust outlet diameter is identical with intake grill diameter.
4. the cooling axial-flow blower of central air-conditioner outdoor unit of a kind of low-noise high-efficiency according to claim 1, is characterized in that: the exhaust outlet of described electric machine support and air duct matches, and electric machine support cross section is M shape.
CN201320761899.XU 2013-11-28 2013-11-28 Low-noise high-efficiency central air conditioner outdoor machine cooling axial-flow fan Withdrawn - After Issue CN203584898U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320761899.XU CN203584898U (en) 2013-11-28 2013-11-28 Low-noise high-efficiency central air conditioner outdoor machine cooling axial-flow fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320761899.XU CN203584898U (en) 2013-11-28 2013-11-28 Low-noise high-efficiency central air conditioner outdoor machine cooling axial-flow fan

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CN203584898U true CN203584898U (en) 2014-05-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103629156A (en) * 2013-11-28 2014-03-12 浙江亿利达风机股份有限公司 Low-noise and efficient cooling axial flow fan of central air conditioner outdoor unit
CN105275876A (en) * 2014-05-26 2016-01-27 广东美的暖通设备有限公司 Axial flow wind wheel of air-conditioning outdoor unit and air-conditioning outdoor unit provided therewith
WO2020083002A1 (en) * 2018-10-24 2020-04-30 美的集团股份有限公司 Axial-flow wind turbine, outdoor unit of air conditioner, and air conditioner

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103629156A (en) * 2013-11-28 2014-03-12 浙江亿利达风机股份有限公司 Low-noise and efficient cooling axial flow fan of central air conditioner outdoor unit
CN103629156B (en) * 2013-11-28 2015-10-28 浙江亿利达风机股份有限公司 A kind of central air conditioner outdoor unit but axial-flow blower of low-noise high-efficiency
CN105275876A (en) * 2014-05-26 2016-01-27 广东美的暖通设备有限公司 Axial flow wind wheel of air-conditioning outdoor unit and air-conditioning outdoor unit provided therewith
CN105275876B (en) * 2014-05-26 2019-03-12 广东美的暖通设备有限公司 Air-conditioner outdoor unit axial-flow windwheel and air-conditioner outdoor unit with it
WO2020083002A1 (en) * 2018-10-24 2020-04-30 美的集团股份有限公司 Axial-flow wind turbine, outdoor unit of air conditioner, and air conditioner

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20140507

Effective date of abandoning: 20151028

C25 Abandonment of patent right or utility model to avoid double patenting