EA200900853A1 - BLOWER VALVE FAN - Google Patents
BLOWER VALVE FANInfo
- Publication number
- EA200900853A1 EA200900853A1 EA200900853A EA200900853A EA200900853A1 EA 200900853 A1 EA200900853 A1 EA 200900853A1 EA 200900853 A EA200900853 A EA 200900853A EA 200900853 A EA200900853 A EA 200900853A EA 200900853 A1 EA200900853 A1 EA 200900853A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- blade
- chord
- fan
- profile
- longitudinal axis
- Prior art date
Links
Abstract
Изобретение относится к области машиностроения, в частности к конструкции лопастей вентилятора вентиляторной градирни, и может быть использовано, например, в промышленной теплоэнергетике, в частности на химических, нефтехимических и других предприятиях, где требуется охлаждение оборотной воды. Лопасть вентилятора градирни выполнена в виде полой оболочки и содержит комлевую часть, представляющую собой круглый стержень и предназначенную для крепления лопасти ко втулке рабочего колеса вентилятора с возможностью установки требуемого рабочего угла лопасти, перо и переходную часть от комля к ее перу, последнее профилировано и образовано аэродинамическим профилем, имеющим хорду переменной длины L вдоль продольной оси лопасти, скругленную переднюю кромку, заостренную или затупленную заднюю кромку, расположенные на концах хорды профиля и соединенные между собой гладкими линиями верхней и нижней частей контура профиля. В плане форма лопасти выполнена сужающейся к концу лопасти, передняя и задняя кромки выполнены прямолинейными, наклоненными к продольной оси лопасти, причем передняя кромка наклонена под углом под углом α от 15 до 20°, а задняя кромка - под углом β от 5 до 8°, при этом переходная часть лопасти ступенчато сужается в направлении к комлевой части лопасти рабочего колеса, аэродинамический профиль в нормальном сечении к продольной оси лопасти имеет расположенный в начале переходной части лопасти участок максимальной толщины профиля, равный 0,14-0,15 от длины L хорды в данном сечении и расположенный на расстоянии от 0,38 до 0,40∙L, измеренном от передней кромки профиля вдоль его хорды, указанное сечение расположено на расстоянии Sот концаThe invention relates to the field of engineering, in particular to the design of the fan blades of the fan cooling tower, and can be used, for example, in industrial heat and power engineering, in particular in chemical, petrochemical and other enterprises that require cooling of circulating water. The fan blade of the cooling tower is made in the form of a hollow shell and contains the butt part, which is a round rod and designed to mount the blade to the fan impeller sleeve with the ability to set the required working angle of the blade, the feather and the transitional part from the butt to its feather, the latter is shaped and formed by aerodynamic profile, having a chord of variable length L along the longitudinal axis of the blade, rounded front edge, pointed or blunted rear edge, located at the ends of the chord pr Phil and interconnected by smooth lines of upper and lower parts of the profile contour. In terms of the shape of the blade is made tapering to the end of the blade, the front and rear edges are made rectilinear, inclined to the longitudinal axis of the blade, with the front edge inclined at an angle α from 15 to 20 °, and the rear edge - at an angle β from 5 to 8 ° , while the transitional part of the blade tapers in steps towards the butt part of the impeller blade, the aerodynamic profile in the normal section to the longitudinal axis of the blade has an area of maximum profile thickness located at the beginning of the transitional part of the blade, equal to 0.14-0.15 o t of length L of the chord in this section and located at a distance from 0.38 to 0.40 L, measured from the leading edge of the profile along its chord, the specified section is located at a distance S from the end
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA200900853A EA015948B1 (en) | 2009-07-20 | 2009-07-20 | Fan baffle of tower cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA200900853A EA015948B1 (en) | 2009-07-20 | 2009-07-20 | Fan baffle of tower cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EA200900853A1 true EA200900853A1 (en) | 2011-02-28 |
| EA015948B1 EA015948B1 (en) | 2011-12-30 |
Family
ID=43778095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EA200900853A EA015948B1 (en) | 2009-07-20 | 2009-07-20 | Fan baffle of tower cooler |
Country Status (1)
| Country | Link |
|---|---|
| EA (1) | EA015948B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4242467A1 (en) * | 2022-03-08 | 2023-09-13 | GT Karbon Izleme Ve Enerji Verimliligi Sanayi Ticaret Anonim Sirketi | Axial flow fan tandem blade |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4569633A (en) * | 1983-04-18 | 1986-02-11 | United Technologies Corporation | Airfoil section for a rotor blade of a rotorcraft |
| RU2120037C1 (en) * | 1996-06-14 | 1998-10-10 | Общество с ограниченной ответственностью "Контакт" | Nozzle assembly blade |
| US6129528A (en) * | 1998-07-20 | 2000-10-10 | Nmb Usa Inc. | Axial flow fan having a compact circuit board and impeller blade arrangement |
| KR100347050B1 (en) * | 1999-11-02 | 2002-08-03 | 엘지전자주식회사 | Axial flow fan of refrigerator |
| US6331100B1 (en) * | 1999-12-06 | 2001-12-18 | General Electric Company | Doubled bowed compressor airfoil |
| GB2362927A (en) * | 2000-03-07 | 2001-12-05 | Elta Fans Ltd | A hub for a fan blade |
| RU2274770C2 (en) * | 2003-08-11 | 2006-04-20 | Сафа Алисафа оглы Гюльмамедов | Blade of axial-flow fan |
| JP2005282490A (en) * | 2004-03-30 | 2005-10-13 | Mitsubishi Fuso Truck & Bus Corp | Program and method for preparing aerofoil profile |
| RU69591U1 (en) * | 2007-03-12 | 2007-12-27 | Вячеслав Ефремович Леженников | AXIAL FAN COMPOSITION BLADE |
-
2009
- 2009-07-20 EA EA200900853A patent/EA015948B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EA015948B1 (en) | 2011-12-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): AM AZ BY KZ KG MD TJ TM RU |