SU1744310A1 - Reverse axial fan impeller blade - Google Patents

Reverse axial fan impeller blade Download PDF

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Publication number
SU1744310A1
SU1744310A1 SU904870808A SU4870808A SU1744310A1 SU 1744310 A1 SU1744310 A1 SU 1744310A1 SU 904870808 A SU904870808 A SU 904870808A SU 4870808 A SU4870808 A SU 4870808A SU 1744310 A1 SU1744310 A1 SU 1744310A1
Authority
SU
USSR - Soviet Union
Prior art keywords
axial fan
impeller blade
fan impeller
reverse axial
blade
Prior art date
Application number
SU904870808A
Other languages
Russian (ru)
Inventor
Анатолий Михайлович Федюшкин
Original Assignee
Харьковский авиационный институт им.Н.Е.Жуковского
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Харьковский авиационный институт им.Н.Е.Жуковского filed Critical Харьковский авиационный институт им.Н.Е.Жуковского
Priority to SU904870808A priority Critical patent/SU1744310A1/en
Application granted granted Critical
Publication of SU1744310A1 publication Critical patent/SU1744310A1/en

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Abstract

Изобретение позвол ет снизить уровень шума вентил тора при его работе в реверсивном режиме. В этом режиме возникают расшир ющиес  срывные зоны у поверхностей корпуса 4, двигател  3 и на пилонах 5. в св зи с этим при входе потока в рабочее колесо 1 угол натекани  потока на заднюю кромку лопатки 2 измен етс , дл  снижени  уровн  иума задн   кромка каждой лопатки выполнена по радиусу, составл ющему 0,03-0,05 от величины хорды пера ЗилThe invention makes it possible to reduce the noise level of a fan when it is operated in a reverse mode. In this mode, expanding break-off zones occur at the surfaces of the housing 4, the engine 3 and on the pylons 5. In connection with this, when the flow enters the impeller 1, the angle of flow leakage on the rear edge of the blade 2 is changed, to decrease the level of the rear edge of each blades are made along the radius of 0.03-0.05 from the chord size of the Zil pen

Description

Фиг.22

Фиг.ЗFig.Z

Claims (1)

Фор мула и зобрете.нияClaim Лопатка рабочего колеса реверсивного осевого вентилятора, содержащая перо, о ταμ ч а ю щ а я с я тем. что, с целью снижения уровня шума, задняя кромка каждой лопатки выполнена по радиусу, составляющему 0.03-0.05 величины хорды пера.The blade of the impeller of a reversible axial fan, containing a feather, about ταμ part of it. that, in order to reduce the noise level, the trailing edge of each blade is made along a radius of 0.03-0.05 pen chord values.
SU904870808A 1990-10-01 1990-10-01 Reverse axial fan impeller blade SU1744310A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU904870808A SU1744310A1 (en) 1990-10-01 1990-10-01 Reverse axial fan impeller blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU904870808A SU1744310A1 (en) 1990-10-01 1990-10-01 Reverse axial fan impeller blade

Publications (1)

Publication Number Publication Date
SU1744310A1 true SU1744310A1 (en) 1992-06-30

Family

ID=21538619

Family Applications (1)

Application Number Title Priority Date Filing Date
SU904870808A SU1744310A1 (en) 1990-10-01 1990-10-01 Reverse axial fan impeller blade

Country Status (1)

Country Link
SU (1) SU1744310A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Ушаков КА Аэродинамика осевых вентил торов и элементы их конструкций. М/ 1960, с. 42. Авторское свидетельство СССР № 1076639,кл F 04 D 29/38, 1982 *

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