DE2334478A1 - Rotor seal for rotary lateral duct compressor - has lip-shaped annulus on housing wall axially extending into rotor ring groove - Google Patents

Rotor seal for rotary lateral duct compressor - has lip-shaped annulus on housing wall axially extending into rotor ring groove

Info

Publication number
DE2334478A1
DE2334478A1 DE19732334478 DE2334478A DE2334478A1 DE 2334478 A1 DE2334478 A1 DE 2334478A1 DE 19732334478 DE19732334478 DE 19732334478 DE 2334478 A DE2334478 A DE 2334478A DE 2334478 A1 DE2334478 A1 DE 2334478A1
Authority
DE
Germany
Prior art keywords
lip
ring groove
rotor
housing wall
gap
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.)
Pending
Application number
DE19732334478
Other languages
German (de)
Inventor
Peter Dipl Ing Obert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE19732334478 priority Critical patent/DE2334478A1/en
Priority to CH1285973A priority patent/CH560326A5/xx
Priority to FR7332617A priority patent/FR2199340A5/fr
Priority to IT7328769A priority patent/IT993191B/en
Priority to GB4316673A priority patent/GB1448578A/en
Publication of DE2334478A1 publication Critical patent/DE2334478A1/en
Pending legal-status Critical Current

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
    • F04D23/00—Other rotary non-positive-displacement pumps
    • F04D23/008—Regenerative pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
    • 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
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The lip-shaped annular strip, which extends co-axially across the gap between the inner housing face and the rotor hub, is fixed in a ring groove of the housing as in 244933. The strip extends into a ring groove provided in the hub of the rotor. The cross-section of the ring groove in the hub is preferably slightly greater than that of the lip to provide just sufficient clearance to prevent contact between lip and hub during operation.

Description

SIEMENSAKTIENGESELLSCHAPT Lrlatifeen, w. JULl 1973 Berlin und München Werner-von-Siemens-Str.50SIEMENSAKTIENGESELLSCHAPT Lrlatifeen, f. JULl 1973 Berlin and Munich Werner-von-Siemens-Str. 50

Unser Zeichen: VPA 73/3156Our reference: VPA 73/3156

(9/373/3035) Le/HL Strömungsmaschine, insbesondere Seitenkanalverdichter(9/373/3035) Le / HL flow machine, especially side channel compressor

Zusatzanmeldung zu P 22 44 933.8 vom 13.9.1972 - VPA 72/3216Additional registration to P 22 44 933.8 from 13.9.1972 - VPA 72/3216

Die Hauptanmeldung betrifft eine Strömungsmaschine, insbesondere Seitenkanalverdichter, mit einer lippenartigen Abdichtung im Spalt zwischen Laufradnabe und der dieser gegenüberstehenden Gehäusewand. Diese Abdichtlippe verringert die verhältnismäßig großen Spaltverluste, die durch den oben genannten Spalt entstehen. Zweckmäßig besteht die Abdichtung aus einem Band, das in eine ringförmige Nut eingelegt ist, die senkrecht zur Spaltebene verläuft und vorzugsweise in der Gehäusewand angeordnet ist.The main application relates to a flow machine, in particular a side channel compressor, with a lip-like seal in the gap between the impeller hub and the housing wall opposite it. This sealing lip reduces the relative large gap losses caused by the above-mentioned gap. Appropriately, the seal consists of a tape, which is inserted into an annular groove which runs perpendicular to the gap plane and is preferably arranged in the housing wall is.

Die vorliegende Erfindung bezweckt eine weitere Verbesserung des Gegenstandes der Hauptanmeldung dahingehend, daß eine noch stärkere Verringerung der Spaltverluste erreicht wird. Bei der Ausführung nach der Hauptanmeldung reicht das die Abdichtung bildende Band bis an die ebene Nabe des Laufrades heran. Gemäß der vorliegenden Erfindung hingegen ragt die Abdichtlippe in eine in der Laufradnabe vorgesehene, einen ringförmigen Absatz oder eine Ringnut bildende Ausnehmung hinein. Durch diese Ausbildung wird die Drosselwirkung der Abdichtlippe, d.h. also die Drosselung der Spaltströmung, noch erheblich verstärkt. Den Querschnitt der genannten Ringnut wählt man dabei möglichst klein, nämlich nur um das Maß größer als den Querschnitt der Dichtlippe, damit ein klemmfreies Laufen des Rades möglich, ist. Sinngemäß ist der radiale Abstand zwischen der Abdichtlippe und einem ringförmigen Absatz möglichst klein zu halten.The present invention aims to further improve the subject matter of the parent application to the effect that a still greater reduction in gap losses is achieved. In the case of the execution according to the main application, the sealing is sufficient forming band up to the flat hub of the impeller. According to the present invention, however, the sealing lip protrudes into a recess which is provided in the impeller hub and forms an annular shoulder or an annular groove. Through this Training, the throttling effect of the sealing lip, i.e. the throttling of the gap flow, is considerably increased. The cross-section of said annular groove is chosen to be as small as possible, namely only by the amount greater than the cross-section of the Sealing lip so that the wheel can run without jamming. The radial distance between the sealing lip is analogous and to keep an annular shoulder as small as possible.

-2-409884/0248 -2-409884 / 0248

YPA 73/3156YPA 73/3156

Die Erfindung ist an Hand der Zeichnung in zwei Ausführungsbeispielen näher erläutert. In Fig. 1 sind mit 1 das Laufrad eines Seitenkanalverdichter, mit 2 das Gehäuse deselben und mit 3 der den Seitenkanal 4 enthaltende Gehäusedeckel bezeichnet. Zwischen dem Gehäusedeckel 3 und dem Laufrad 1 befindet sich in bekannter Weise ein Spalt 5.The invention is explained in more detail with reference to the drawing in two exemplary embodiments. In Fig. 1 are 1 with the impeller of a side channel compressor, with 2 the housing of the same and denoted by 3 of the housing cover containing the side channel 4. Between the casing cover 3 and the impeller 1 there is a gap 5 in a known manner.

Im Gehäusedeckel 3 ist eine senkrecht zur Spaltebene verlaufende Ringnut 6 vorgesehen, in die ein Band 7 eingelegt ist. Gemäß der Erfindung ist das Band 7 so angeordnet, daß es in eine Ringnut 8 in der Laufradnabe 9 hineinragt. Durch diese Anordnung ergibt sich eine Art Labyrinthdichtung, durch die eine starke Drosselung der Spaltströmung erfolgt, so daß die Spaltverluste stark verringert, wenn nicht praktisch beseitigt werden. Dadurch wiederum wird der Wirkungsgrad der Maschine stark erhöht.In the housing cover 3 is a perpendicular to the gap plane Annular groove 6 is provided into which a band 7 is inserted. According to the invention, the belt 7 is arranged so that it protrudes into an annular groove 8 in the impeller hub 9. This arrangement results in a kind of labyrinth seal, by which a strong throttling of the gap flow takes place, so that the gap losses are greatly reduced, if not practically be eliminated. This in turn greatly increases the efficiency of the machine.

In Fig. 2 ist die Laufradnabe 9 nach innen zu so abgesetzt, daß ein ringförmiger Absatz 10 entsteht. Unter diesen ragt die Dichtlippe 7, so daß ebenfalls eine verhältnismäßig starke Drosselung der Spaltströmung erzielt wird.In Fig. 2, the impeller hub 9 is offset inwardly so that an annular shoulder 10 is formed. Under these protrudes the sealing lip 7, so that a relatively strong throttling of the gap flow is also achieved.

2 Figuren
2 Ansprüche2 figures
2 claims

-3-409884/0248 -3-409884 / 0248

Claims (2)

73/315673/3156 233Λ478233-478 Pa tentansprüchePatent claims Strömungsmaschine, insbesondere Seitenkanalverdichter, mit einer lippenartigen Abdichtung im Spalt zwischen
Laufradnabe und der dieser gegenüberstehenden Gehäusewand, wobei die aus einem Band bestehende Abdichtlippe in einer senkrecht zur Spaltebene verlaufenden Ringnut im Gehäuse angeordnet ist, nach Patentanmeldung P 22
44 933-8 vom 13.9.1972, dadurch gekennzeichnet, daß
die Abdichtlippe (7) in eine in der Laufradnabe (9)
vorgesehene, einen ringförmigen Absatz oder eine Ringnut (8) bildende Ausnehmung hineinragt.Turbo machine, in particular side channel compressor, with a lip-like seal in the gap between
Impeller hub and the housing wall opposite it, the sealing lip consisting of a band being arranged in an annular groove in the housing running perpendicular to the plane of the gap, according to patent application P 22
44 933-8 of September 13, 1972, characterized in that
the sealing lip (7) into one in the impeller hub (9)
provided, an annular shoulder or an annular groove (8) forming recess protrudes. 2. Strömungsmaschine nach Anspruch 1, dadurch gekennzeichnet, daß der Querschnitt der Laufradringnut (8) nur um das einen klemmfreien Lauf des Rades ermöglichende Maß größer ist als der Querschnitt der Dichtlippe.2. Turbomachine according to claim 1, characterized in that the cross section of the impeller ring groove (8) is only around the dimension that enables the wheel to run without jamming is greater than the cross-section of the sealing lip. 409884/0248409884/0248 LeerseiteBlank page
DE19732334478 1972-09-13 1973-07-06 Rotor seal for rotary lateral duct compressor - has lip-shaped annulus on housing wall axially extending into rotor ring groove Pending DE2334478A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19732334478 DE2334478A1 (en) 1973-07-06 1973-07-06 Rotor seal for rotary lateral duct compressor - has lip-shaped annulus on housing wall axially extending into rotor ring groove
CH1285973A CH560326A5 (en) 1972-09-13 1973-09-07
FR7332617A FR2199340A5 (en) 1972-09-13 1973-09-11
IT7328769A IT993191B (en) 1972-09-13 1973-09-11 FLUID DYNAMIC MACHINE SPECIES COMPRESSOR WITH LATERAL CHANNEL
GB4316673A GB1448578A (en) 1972-09-13 1973-09-13 Seals in fluid-flow machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732334478 DE2334478A1 (en) 1973-07-06 1973-07-06 Rotor seal for rotary lateral duct compressor - has lip-shaped annulus on housing wall axially extending into rotor ring groove

Publications (1)

Publication Number Publication Date
DE2334478A1 true DE2334478A1 (en) 1975-01-23

Family

ID=5886159

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732334478 Pending DE2334478A1 (en) 1972-09-13 1973-07-06 Rotor seal for rotary lateral duct compressor - has lip-shaped annulus on housing wall axially extending into rotor ring groove

Country Status (1)

Country Link
DE (1) DE2334478A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4806073A (en) * 1987-03-18 1989-02-21 Siemens Aktiengesellschaft Dust stripper for use in a side-channel compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4806073A (en) * 1987-03-18 1989-02-21 Siemens Aktiengesellschaft Dust stripper for use in a side-channel compressor

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