DE454469C - Impeller for screw fans and screw pumps - Google Patents
Impeller for screw fans and screw pumpsInfo
- Publication number
- DE454469C DE454469C DEM95370D DEM0095370D DE454469C DE 454469 C DE454469 C DE 454469C DE M95370 D DEM95370 D DE M95370D DE M0095370 D DEM0095370 D DE M0095370D DE 454469 C DE454469 C DE 454469C
- Authority
- DE
- Germany
- Prior art keywords
- screw
- impeller
- fans
- pumps
- wings
- 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.)
- Expired
Links
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
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Laufrad für Schraubenventilatoren und Schraubenpumpen. Wenn ein Schraubenventilator bei hoher spezifischer Leistung einen guten Wirkungsgrad haben soll, dann muß er außer einem vor- oder nachgeschalteten Leitapparat' im allgemeinen mit Laufradflügeln versehen sein, die von der Spitze nach der Nabe hin breitiex werden und zunehmende Steigungswinkel aufweisen. Die Folgen hiervon sind große achsiaie Längen der Laufradnaben und große Gewichte; sie sind insbesondere bei fliegender Anordnung des Läufers unerwünscht. Es ist nun bekannt, daß man durch Anwendung von schmalen Schleuderflächen in der Nähe der Nabe die dort sonst nötigen breiten schraubenförmigen Flügel vorteilhaft ersetzen kann. Erfindungsgemäß geschieht dies durch schräg zur Laufradebene verlaufende ebene oder gewölbte Platten, welche die Eintrittskanten der Flügel mit den Austrittskanten der benachbarten Flügel verbinden. Hierdurch wird erreicht, daß man nach Art der Schiffspropeller formbare und abgießbare Läufer erhält, welche gegenüber den bekannten Läufern mit kurzen ebenen oder schraubenförmigen Hilfsflügeln schmalere Flügelwurzeln, kürzere Naben und eine erhöhte Festigkeit besitzen, indem die in der Nähe der Nabe am stärksten verwundenen Flügel gegen große Torsionsbeanspruchungen geschützt sind. Die von den Schleuderplatten herrührende erhöhte Drehbewegung der mittleren Luftstrahlteile wird durch Leitapparate bekannter Formen wieder aufgehoben und nutzbar gemacht.Impeller for screw fans and screw pumps. If a screw fan should have a good degree of efficiency with high specific power, then it must apart from an upstream or downstream diffuser, generally with impeller blades be provided, which are broadiex and increasing from the tip to the hub Have angle of incline. The consequences of this are large axial lengths of the wheel hubs and large weights; they are particularly undesirable when the rotor is in a cantilevered arrangement. It is now known that by using narrow spinning surfaces in the It is advantageous to sew the wide helical wings that are otherwise necessary there near the hub can replace. According to the invention, this is done by running obliquely to the impeller plane flat or curved plates, which connect the leading edges of the wings with the trailing edges of the neighboring wings. This achieves that one after the type of Ship propellers receive malleable and castable runners, which compared to the known Runners with short, flat or helical auxiliary wings have narrower wing roots, Have shorter hubs and increased strength by placing those near the hub the most twisted wings are protected against high torsional loads. The increased rotational movement of the central air jet parts resulting from the centrifugal plates is canceled and made usable again by means of diffusers of known shapes.
Die Abb. i und z zeigen ein Ausführungsbeispiel in der Vorderansicht und im Querschnitt. Auf der Nabe a sitzen die schraubenförmig verwundenen Flügel b. Zwischen ihnen sind in schräger Lage die Schleuderplatten c derart angeordnet, daß die Ein-und Austrittskanten der benachbarten Flügel miteinander verbunden sind.Figs. I and z show an embodiment in the front view and in cross section. The helically twisted wings sit on the hub a b. The centrifugal plates c are arranged in an inclined position between them in such a way that that the inlet and outlet edges of the adjacent wings are connected to one another.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM95370D DE454469C (en) | Impeller for screw fans and screw pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM95370D DE454469C (en) | Impeller for screw fans and screw pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
DE454469C true DE454469C (en) | 1928-01-07 |
Family
ID=7322977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM95370D Expired DE454469C (en) | Impeller for screw fans and screw pumps |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE454469C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1090599B (en) * | 1959-05-27 | 1960-10-06 | Albert Schaudt | Impeller with fixed blades for rimless axial water turbines |
-
0
- DE DEM95370D patent/DE454469C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1090599B (en) * | 1959-05-27 | 1960-10-06 | Albert Schaudt | Impeller with fixed blades for rimless axial water turbines |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE112013002698T5 (en) | air blower | |
DE102011015784A1 (en) | fan | |
DE1937395A1 (en) | Grid to avoid secondary flow | |
DE454469C (en) | Impeller for screw fans and screw pumps | |
WO2020048730A1 (en) | Impeller wheel for a radial turbocompressor | |
DE689927C (en) | Formation of the Leitkanaele behind the impeller of a centrifugal fan | |
DE553983C (en) | Blading of mainly axially loaded centrifugal machines such. B. steam turbines, pumps or fans | |
DE731575C (en) | Axial flywheel | |
DE345616C (en) | ||
DE447930C (en) | Centrifugal compressor with device for wet cleaning of the air as it passes through | |
DE545628C (en) | Composed hollow shaft for the impellers of gyroscopes | |
DE102021004804B3 (en) | Aerodynamic drive unit | |
DE410800C (en) | Screw or propeller fan | |
DE634449C (en) | Fan with multi-blade propeller wheel | |
DE617039C (en) | Impeller for helical fan | |
AT506202B1 (en) | DEVICE FOR PUMPING GAS-CONTAINING SUSPENSIONS, ESPECIALLY FIBER-SUSPENSIONS | |
DE607134C (en) | Guide vanes for screw fans | |
DE600534C (en) | Screw or blade fan | |
DE323190C (en) | Blade for high-speed water turbines with a crescent-shaped meridional section | |
AT205364B (en) | Heating device for vehicles, in particular motor vehicles | |
DE421686C (en) | Screw fan with two or more blades | |
DE19604638A1 (en) | Blade assembly for ventilation fan | |
DE102021107355A1 (en) | Bladeless flow diffuser | |
DE762715C (en) | Air-cooled aircraft engine with at least two V-shaped rows of cylinders and a cooling fan | |
DE650952C (en) | Screw blower for mixture delivery for internal combustion engines |