DE227702C - - Google Patents
Info
- Publication number
- DE227702C DE227702C DENDAT227702D DE227702DA DE227702C DE 227702 C DE227702 C DE 227702C DE NDAT227702 D DENDAT227702 D DE NDAT227702D DE 227702D A DE227702D A DE 227702DA DE 227702 C DE227702 C DE 227702C
- Authority
- DE
- Germany
- Prior art keywords
- blades
- edges
- blade
- air flow
- bead
- 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.)
- Active
Links
- 239000011324 bead Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010408 sweeping Methods 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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
- F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Der Gegenstand der Erfindung ist ein Schleuder ventilator, bei welchem im Schaufelkranz einzelne, in bestimmten Abständen voneinander stehende Schaufeln mit die Kanten der anderen Schaufeln nach innen überragenden wulstförmigen Ansätzen derart versehen sind, daß die tangentiale Luftströmung sanft von den freien Schaufelkanten abgehalten wird. Hierdurch.jgircLjias Geräusch_.des-„anThe object of the invention is a centrifugal fan, in which the blade ring individual blades standing at certain distances from one another with the edges of the other blades protruding inwardly bead-shaped lugs are provided so that the tangential air flow is gentle is kept from the free blade edges. Hereby.jgircLjias noise_des- "an
ίο den inneren Schaufelkanten vorbeistreichenden Luftstromes vermieden und der Wirkungsgrad verbessert.ίο sweeping past the inner blade edges Air flow avoided and the efficiency improved.
v~DHr_gäl'e Wirkung der Wulstschaufel kommt insbesondere züTTJeltung, wenn die Schaufelrichtung so gewählt wird, daß die Tangente der inneren Schaufelenden entgegen der Drehrichtung zwischen Mittelpunkt und Umfang des Rades fällt. In diesem Falle kann ohne innere Linse die achsiale Länge des Kreisels eine beliebige sein und noch eine erhöhte Verbesserung des Wirkungsgrades festgestellt werden. "~ ~ "~ v ~ DHr_gäl'e effect of Wulstschaufel is particularly züTTJeltung when the blade direction is chosen so that the tangent of the inner blade ends falls of the wheel against the rotational direction between the center and periphery. In this case, the axial length of the gyro may be an arbitrary one without inner lens, and even an increased verb esserung efficiency are detected. "~ ~" ~
Die Zeichnung zeigt eine beispielsweise Ausführung des Erfindungsgegenstandes im Schnitt.The drawing shows an example embodiment of the subject matter of the invention in section.
Der zwischen zwei Stirnwänden angeordnete, eine Trommel bildende Schaufelkranz wird aus den kurzen Schaufeln α und den längeren Wulstschaufeln b gebildet. Letztere betragen etwa 1J4 bis 1Z6 der gesamten Schaufelzahl.The blade ring, which is arranged between two end walls and forms a drum, is formed from the short blades α and the longer bead blades b . The latter amount to about 1 J 4 to 1 Z 6 of the total number of blades.
Die wulstförmige Verdickung der Schaufeln b schmiegt sich dem Flüssigkeitsstrome an.The bead-like thickening of the blades b hugs the flow of liquid.
Es ist zweckmäßig, den Schaufeln α eine möglichst geringe radiale Tiefe zu geben. Dadurch, daß die inneren Schaufelenden eine solche Richtung erhalten, daß ihre Tangente entgegen der Drehrichtung zwischen Mitte und Umfang des Rades fällt, was wegen der erhöhten Geschwindigkeit des inneren tangentialen Luftstromes erst durch die Wulstschaufeln möglich ist, wird eine ungehinderte Durch-Strömungsrichtung erzielt.It is useful to give the blades α the smallest possible radial depth. The fact that the inner blade ends receive such a direction that their tangent falls against the direction of rotation between the center and circumference of the wheel, which is only possible through the bead blades due to the increased speed of the inner tangential air flow, an unhindered flow direction is achieved.
Der Winkel zwischen Ein- und Austrittsstutzen c und d beträgt bei einer solchen Schaufelanordnung zweckmäßig 90 bis 135 °, entgegen der Drehrichtung vom Eintrittsstutzen gemessen.The angle between inlet and outlet nozzles c and d in such a blade arrangement is expediently 90 to 135 °, measured against the direction of rotation from the inlet nozzle.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE227702C true DE227702C (en) |
Family
ID=488142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT227702D Active DE227702C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE227702C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2463352A (en) * | 1944-05-01 | 1949-03-01 | Broluska Amel Ben | Jet power means for aircraft |
| DE1027092B (en) * | 1956-06-30 | 1958-03-27 | Krantz H Fa | Paddle wheel with control housing for the propulsion of ships |
-
0
- DE DENDAT227702D patent/DE227702C/de active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2463352A (en) * | 1944-05-01 | 1949-03-01 | Broluska Amel Ben | Jet power means for aircraft |
| DE1027092B (en) * | 1956-06-30 | 1958-03-27 | Krantz H Fa | Paddle wheel with control housing for the propulsion of ships |
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