CH269886A - Centrifugal compressor with an auxiliary rotor. - Google Patents
Centrifugal compressor with an auxiliary rotor.Info
- Publication number
- CH269886A CH269886A CH269886DA CH269886A CH 269886 A CH269886 A CH 269886A CH 269886D A CH269886D A CH 269886DA CH 269886 A CH269886 A CH 269886A
- Authority
- CH
- Switzerland
- Prior art keywords
- auxiliary rotor
- radial
- centrifugal compressor
- rotor blade
- insert
- Prior art date
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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
- F04D29/285—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors the compressor wheel comprising a pair of rotatable bladed hub portions axially aligned and clamped together
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Radialverdichter mit Vorsatzläufer. Die modernen Hoehleistungs-Radialver- dichter für grosse Fördervolumen werden mit Vorsatzläufern ausgeführt, um die einströ mende Luft in die verlangte Richtung des Ra dialrades umzulenken. Die Herstellung eines solchen Vorsatzläufers ist aber mit etwelchen Schwierigkeiten verbunden, da die beste strö- mungstechnisehe Form für die Bearbeitung nicht günstig ausfällt.. Insbesondere bietet die Formgebung der äussern Kontur des Vorsatz läufer-Sehaufelkopfes mit dem Übergangs bogen zum Radialrad Schwierigkeiten.
Grund sätzlich kann dieser Übergangsbogen entweder in die Radial- oder in die Vorsatzläufer-Schau- fel verlegt werden. Im ersteren Falle erfor dert dies, abgesehen von der unbequemen Be- arbeitbarkeit des Radialrades, einen erheblich dickeren Rohling. Im zweiten Falle würde die Vorsatzläufer-Schaufel eine für die Her stellung sehr ungünstige Spitze aufweisen.
Um diese Nachteile zu umgehen, ist gemäss vorliegender Erfindung der Übergangsbogen von der Radial.- zur Vorsatzläufer-Schaufel, gegen den saugseitigen Abschlussdeckel hin, durch ein mit mindestens einer der beiden Schaufeln verbundenes Einsatzstück gebildet.
Fig. 1 der beiliegenden Zeichnung zeigt im Schnitt ein Ausführungsbeispiel des Erfin dungsgegenstandes. Fig.2 ist eine Frontan sicht zu Fig. 1. 1 bezeichnet eine Laufscheibe des Radialrades, 2 die Raclialsehaufel, 3 die Vorsatzläufer-Nabe, 4 die Vorsatzläufer- Schaufel und 5 den saugseitigen Deckel. 6 be zeichnet ein Einsatzstück mit dem Übergangs bogen 7, was die Herstellung des letzteren er heblich vereinfacht.
Das Einsatzstück 6 kann, wie die Va riante nach Fig. 3 zeigt, vermittels eines Fusses 8 in die Radialscha.ufel 2 eingesetzt und da selbst verlötet oder verschweisst sein. Zudem ist das Einsatzstuck 6 zur Verhinderung des Schwingens der Vorsatzläufer-Schaufel 4 bei 9 an diese angeschweisst. Eine gewisse Dif ferenzdehnung zwischen Vorsatzläufer-Schau- fel und Radialschaufel wird durch einen Spiel raum 10 ermöglicht.
Centrifugal compressor with an auxiliary rotor. The modern high-performance centrifugal compressors for large delivery volumes are designed with auxiliary rotors to deflect the incoming air in the required direction of the radial wheel. The manufacture of such an auxiliary rotor is associated with some difficulties, however, since the best flow technology form is not favorable for machining. In particular, the shape of the outer contour of the auxiliary rotor blade head with the transition curve to the radial impeller presents difficulties.
In principle, this transition bend can be laid either in the radial or in the front rotor blade. In the former case, apart from the inconvenient machinability of the radial wheel, this requires a considerably thicker blank. In the second case, the auxiliary rotor blade would have a tip that is very unfavorable for the manufacture.
In order to avoid these disadvantages, according to the present invention, the transition bend from the radial to the auxiliary rotor blade, towards the suction-side cover, is formed by an insert piece connected to at least one of the two blades.
Fig. 1 of the accompanying drawings shows in section an embodiment of the inven tion subject. Fig.2 is a front view of Fig. 1. 1 denotes a running disk of the radial wheel, 2 the raclial shovel, 3 the auxiliary rotor hub, 4 the auxiliary rotor blade and 5 the suction-side cover. 6 be denotes an insert with the transition arc 7, which the manufacture of the latter it considerably simplifies.
The insert 6 can, as the variant according to FIG. 3 shows, be inserted into the Radialscha.ufel 2 by means of a foot 8 and there itself be soldered or welded. In addition, the insert 6 is welded to the front rotor blade 4 at 9 to prevent the auxiliary rotor from vibrating. A certain differential expansion between the auxiliary rotor blade and the radial blade is made possible by a clearance 10.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH269886T | 1949-01-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH269886A true CH269886A (en) | 1950-07-31 |
Family
ID=4477490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH269886D CH269886A (en) | 1949-01-07 | 1949-01-07 | Centrifugal compressor with an auxiliary rotor. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH269886A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4543041A (en) * | 1981-08-07 | 1985-09-24 | Holset Engineering Company Limited | Impellor for centrifugal compressor |
US4708593A (en) * | 1986-02-28 | 1987-11-24 | Robinson Industries, Inc. | Surgeless combustion air blower |
US4886417A (en) * | 1988-12-06 | 1989-12-12 | Sundstrand Corporation | Fuel pump and radial-flow impeller therefor |
-
1949
- 1949-01-07 CH CH269886D patent/CH269886A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4543041A (en) * | 1981-08-07 | 1985-09-24 | Holset Engineering Company Limited | Impellor for centrifugal compressor |
US4708593A (en) * | 1986-02-28 | 1987-11-24 | Robinson Industries, Inc. | Surgeless combustion air blower |
US4886417A (en) * | 1988-12-06 | 1989-12-12 | Sundstrand Corporation | Fuel pump and radial-flow impeller therefor |
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