SI22636A - Blade of axial fan with wavy pressure and suction surface - Google Patents
Blade of axial fan with wavy pressure and suction surface Download PDFInfo
- Publication number
- SI22636A SI22636A SI200700275A SI200700275A SI22636A SI 22636 A SI22636 A SI 22636A SI 200700275 A SI200700275 A SI 200700275A SI 200700275 A SI200700275 A SI 200700275A SI 22636 A SI22636 A SI 22636A
- Authority
- SI
- Slovenia
- Prior art keywords
- blade
- pressure
- suction
- wavy
- axial fan
- Prior art date
Links
- 239000012530 fluid Substances 0.000 abstract description 9
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 1
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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Predmet izuma je lopatica aksialnega ventilatorja z valovito tlačno in sesalno površino. Valovitost se odraža v neravni tlačni in sesalni površini lopatice. Valovitost je vidno izražena.The subject of the invention is an axial fan blade with a corrugated pressure and suction surface. Waviness is reflected in the uneven pressure and suction surface of the blade. The ripple is visibly pronounced.
Ventilator je stroj za generacijo pretoka fluida, predvsem zraka ob določeni tlačni karakteristiki. Aktivni del ventilatorja predstavlja več lopatic, ki skrbijo za generacijo tlačne razlike in ustreznega pretoka. Lopatice tvorijo propeler, ki je preko središčne osi rotacijsko gnan z motorjem, običajno z elektromotorjem. Vse dosedanje oblike ventilatorskih lopatic imajo gladko tlačno in sesalno površino, kar je standardna rešitev za tok fluida preko aktivnih površin lopatice. Znane reštve oblikovanja lopatic z namenom zmanjšanja hrupa so predstavljene npr. v patentnih dokumentih WO 01/92726, US 4,089,618 in 5,603,607. Navedeni dokumenti predstavljajo rešitve s posebno oblikovanimi vstopnimi in/ali izstopnimi robovi lopatic.A fan is a machine for generating fluid flow, especially air with a certain pressure characteristic. The active part of the fan is represented by several blades, which take care of the generation of pressure difference and adequate flow. The blades form a propeller which is rotationally driven by a motor, usually an electric motor, through the center axis. All fan blades so far have a smooth pressure and suction surface, which is the standard solution for fluid flow through the active surfaces of the blade. Known solutions of blade design for noise reduction are presented e.g. in WO 01/92726, US 4,089,618 and 5,603,607. These documents represent solutions with specially designed inlet and / or outlet edges.
Naloga in cilj izuma je tako oblikovana lopatica aksialnega ventilatorja, ki bo zagotavljala znižanje nivoja hrupa ter hkrati ohranjala dober izkoristek ventilatorja.It is an object and object of the invention to design an axial fan blade that will provide noise reduction while maintaining good fan efficiency.
Naloga izuma je rešena po neodvisnem patentnem zahtevku.The object of the invention is solved according to an independent patent claim.
Izum bo opisan in prikazan na izvedbenem primeru in slikah, ki prikazujejo:The invention will be described and shown in the embodiment and in the drawings showing:
slika 1: 3 D lopatica, slika 2: tlačna in sesalna stran lopatice, slika 3: preseki lopatice z ravninami pravokotnimi na os rotacije lopatice.Figure 1: 3 D blade, Figure 2: Pressure and suction side of the blade, Figure 3: Cross sections of the blade with planes perpendicular to the axis of rotation of the blade.
Lopatica po iztumu ima valovito tlačno in sesalno stran aktivne površine lopatice, s čimer je zagotovljeno ugodnejše vodenje toka preko tlačne in sesalne strani. To zagotavlja manjšo radialno hitrostno komponento, in s tem boljši iztok z lopatice, ter posledično nižji hrup ob nespremenjenem izkoristku ventilatorja. Poleg ugodnega vpliva na tokovne razmere valovitost zagotavlja večjo togost lopatice, kar se odraža z manjšimi deformacijami lopatice med obratovanjem.The after-blade blade has a corrugated pressure and suction side of the active surface of the blade, thereby providing a more favorable flow control over the pressure and suction sides. This provides a smaller radial velocity component, and thus a better outlet from the blade, and consequently lower noise with constant fan utilization. In addition to its favorable influence on the flow conditions, the undulations provide greater stiffness of the blade, which is reflected by the smaller deformation of the blade during operation.
-2Lopatica ventilatorja po sliki 1 predstavlja aktivni del ventilatorja, ki zagotavlja transport fluida ob določeni tlačni razliki. Zunanji premer lopatice ni omejen. Vsaka lopatica je opredeljena s štirimi deli in sicer:-2 The fan blade according to Figure 1 represents the active part of the fan, which ensures fluid transport at a certain pressure difference. The outer diameter of the blade is not limited. Each blade is defined by four parts, namely:
- tlačna stran oz. tlačna površina 4, sesalna stran oz. površina 5,- pressure side or pressure surface 4, suction side or. surface 5,
- vstopni rob 2,- entry edge 2,
- izstopni rob 3.- outlet edge 3.
Vstopni rob 2 je tisti, s katerim lopatica zajema fuid in je postavljen v smer rotacije 1.The inlet edge 2 is the one by which the blade engages the fuid and is positioned in the direction of rotation 1.
Med obratovanjem lopatica zajema fluid na vstopnem robu 2. Fluid potuje preko tlačne površine 4 in sesalne površine 5 ter zapušča lopatico na izstopnem robu 3. Ker je fluid pri prehodu preko lopatice izpostavljen centrifugalni sili, se mu povečuje radialna komponenta hitrosti. Nova oblika lopatice prikazana na Sliki 1, ima na tlačni strani 4 in sesalni strani 5 izbokline 6 in vdolbine 7. Izmenjevanje izboklin 6 in vdolbin 7 je prikazano na Sliki. 3 in sicer s preseki lopatice A-A, B-B, C-C in D-D. Kjer so na sesalni strani 5 izbokline 6, so na tlačni strani 4 vdolbine 7. Izbokline 6 in vdolbine 7 se izmenjujejo po celotni višini lopatice, to je od središča vrtenja proti zunanjemu radiju propelerja, kar povzroči valovitost lopatice. Ta valovitost pomeni, da so valovi, to je izmenične izbokline in vdolbine po višini lopatice in so vrhovi izboklin in vdolbin približno v radiju vrtenja lopatice.During operation, the blade enters the fluid at the inlet edge 2. The fluid travels across the pressure surface 4 and the suction surface 5 and leaves the blade at the outlet edge 3. As the fluid is subjected to centrifugal force when passing the blade, the radial velocity component increases. The new blade shape shown in FIG. 1 has on the pressure side 4 and the suction side 5 bumps 6 and recesses 7. The alternation of bumps 6 and recesses 7 is shown in FIG. 3, with cross sections of the blades A-A, B-B, C-C and D-D. Where there are bumps 6 on the suction side 5, there are recesses 7 on the pressure side 4. This undulation means that there are waves, that is, alternate bumps and recesses in height of the blade, and the tips of the projections and recesses are approximately within the radius of rotation of the blade.
Prikazane izbokline 6 in vdolbine 7 na Slikah 1, 2 in 3, so lahko polkrožne ali poljubne oblike, ki bi bila vidna na tlačni 4 in sesalni 5 strani lopatice in bi se izmenjevala po višini lopatice od njenega korena, kije bližje osi rotacije 1 in se konča na zunanjem premeru lopatice.The projections 6 and the recesses 7 in Figures 1, 2 and 3 may be semi-circular or arbitrary in shape, which would be visible on the pressure 4 and suction 5 sides of the blade and alternate in height with the blade closer to its axis of rotation 1 and ends at the outer diameter of the blade.
V izvedbenem primeru je prikazana lopatica ki ima izbokline valovite zaokrožene oblike, vendar so v okviru izuma tudi valovitosti poljubnih oblik.In the embodiment, a blade is shown which has projections of wavy rounded shapes, but within the scope of the invention there are also waves of arbitrary shapes.
Lopatica aksialnega ventilatorja po izumu je torej značilna po tem, da je profil lopatice od osi vrtenja, proti zunanjemu robu lopatice valovite oblike, pri čemer je valovitost prednostno, vendar ne izljučno, zaokrožene oblike.The axial fan blade of the invention is thus characterized in that the blade profile is from the axis of rotation towards the outer edge of the blade of a wavy shape, the undulation being preferably, but not exclusively, a rounded shape.
Claims (1)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI200700275A SI22636A (en) | 2007-10-24 | 2007-10-24 | Blade of axial fan with wavy pressure and suction surface |
| PCT/SI2008/000030 WO2009054815A1 (en) | 2007-10-24 | 2008-05-12 | Axial fan blade with corrugated pressure and suction surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI200700275A SI22636A (en) | 2007-10-24 | 2007-10-24 | Blade of axial fan with wavy pressure and suction surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SI22636A true SI22636A (en) | 2009-04-30 |
Family
ID=39689487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SI200700275A SI22636A (en) | 2007-10-24 | 2007-10-24 | Blade of axial fan with wavy pressure and suction surface |
Country Status (2)
| Country | Link |
|---|---|
| SI (1) | SI22636A (en) |
| WO (1) | WO2009054815A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009003170A1 (en) * | 2009-05-15 | 2010-12-02 | BSH Bosch und Siemens Hausgeräte GmbH | Fan wheel, blower with a fan wheel, clothes dryer with a fan and method of manufacturing a fan |
| DE102010023017A1 (en) * | 2010-06-08 | 2011-12-08 | Georg Emanuel Koppenwallner | Humpback whale blower, method for locally improving the flow in turbomachinery and vehicles |
| FR2969120B1 (en) * | 2010-12-15 | 2013-08-30 | Eurocopter France | IMPROVED BLADE FOR ANTI-TORQUE HELICOPTER DEVICE |
| CN103032376B (en) * | 2011-10-09 | 2015-12-09 | 珠海格力电器股份有限公司 | Axial flow fan blade |
| KR20130039481A (en) * | 2011-10-12 | 2013-04-22 | 엘지전자 주식회사 | Axial flow fan and air conditioner |
| KR20140136180A (en) * | 2013-05-20 | 2014-11-28 | 삼성전자주식회사 | Propeller fan and air conditioner having the same |
| JP5980180B2 (en) * | 2013-08-08 | 2016-08-31 | 三菱電機株式会社 | Axial flow fan and air conditioner having the axial flow fan |
| DE102015216579A1 (en) * | 2015-08-31 | 2017-03-02 | Ziehl-Abegg Se | Fan, fan and system with at least one fan |
| KR102548590B1 (en) | 2016-12-28 | 2023-06-29 | 한온시스템 주식회사 | Axial flow Fan |
| CN106640748B (en) * | 2017-01-06 | 2022-12-02 | 珠海格力电器股份有限公司 | Blade, impeller and fan |
| USD901669S1 (en) | 2017-09-29 | 2020-11-10 | Carrier Corporation | Contoured fan blade |
| CN108087302A (en) * | 2017-12-08 | 2018-05-29 | 广东美的制冷设备有限公司 | Axial-flow windwheel and air conditioner |
| CN108087333A (en) * | 2017-12-08 | 2018-05-29 | 广东美的制冷设备有限公司 | Axial-flow windwheel and air conditioner |
| CN108561332B (en) * | 2017-12-30 | 2019-12-17 | 广东美的厨房电器制造有限公司 | Fan and microwave oven |
| DE202019100367U1 (en) * | 2019-01-23 | 2020-04-24 | Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg | Fan wheel of a motor vehicle |
| CN116006510A (en) * | 2023-01-10 | 2023-04-25 | 西安泛仕达流体机械有限公司 | Axial flow fan blade |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB791563A (en) * | 1955-05-02 | 1958-03-05 | Joseph Vaghi | Improvements relating to structures for use as an airplane wing, a propeller blade, a blower or fan blade |
| DE9013099U1 (en) * | 1990-09-14 | 1991-11-07 | Moser, Josef, 8058 Pretzen | rotor |
| IT1303113B1 (en) * | 1998-10-08 | 2000-10-30 | Gate Spa | AXIAL FAN, IN PARTICULAR FOR THE COOLING OF A HEAT EXCHANGER IN A VEHICLE. |
| JP3978083B2 (en) * | 2001-06-12 | 2007-09-19 | 漢拏空調株式会社 | Axial fan |
| KR100820857B1 (en) * | 2003-03-05 | 2008-04-10 | 한라공조주식회사 | Axial flow fan |
| US6991431B2 (en) * | 2003-12-11 | 2006-01-31 | Winston Liu Ching Wen | Ceiling fan blade |
| EP1801422B1 (en) * | 2005-12-22 | 2013-06-12 | Ziehl-Abegg AG | Fan and fan blade |
-
2007
- 2007-10-24 SI SI200700275A patent/SI22636A/en not_active IP Right Cessation
-
2008
- 2008-05-12 WO PCT/SI2008/000030 patent/WO2009054815A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009054815A1 (en) | 2009-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OO00 | Grant of patent |
Effective date: 20071224 |
|
| KO00 | Lapse of patent |
Effective date: 20171030 |