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EP0372104B1 - Side channel compressor - Google Patents

Side channel compressor Download PDF

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Publication number
EP0372104B1
EP0372104B1 EP88120298A EP88120298A EP0372104B1 EP 0372104 B1 EP0372104 B1 EP 0372104B1 EP 88120298 A EP88120298 A EP 88120298A EP 88120298 A EP88120298 A EP 88120298A EP 0372104 B1 EP0372104 B1 EP 0372104B1
Authority
EP
European Patent Office
Prior art keywords
sealing gap
side channel
hub part
packed sealing
channel compressor
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 - Lifetime
Application number
EP88120298A
Other languages
German (de)
French (fr)
Other versions
EP0372104A1 (en
Inventor
Norbert Dr. Aust
Rudolf Dipl.-Ing.(FH) Schöning
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 EP88120298A priority Critical patent/EP0372104B1/en
Priority to DE8888120298T priority patent/DE3863775D1/en
Priority to US07/440,986 priority patent/US4992022A/en
Priority to JP1989139332U priority patent/JPH0278796U/ja
Publication of EP0372104A1 publication Critical patent/EP0372104A1/en
Application granted granted Critical
Publication of EP0372104B1 publication Critical patent/EP0372104B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F04D29/288—Part of the wheel having an ejecting effect, e.g. being bladeless diffuser
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning

Definitions

  • the invention relates to a side channel compressor according to the preamble of claim 1.
  • Such a side channel compressor is known from DE-U-87 04 066.
  • a stripper protruding radially into this sealing gap is arranged in the radial sealing gap section formed between a section of the blade ring projecting laterally beyond the hub part of the impeller and the housing under this section, by means of which a dirt deposit which leads to a blocking of the impeller is to be prevented.
  • the object of the invention is therefore to design a side channel compressor according to the preamble of claim 1 so that even when pumping gases loaded with fluff or fibrous particles, a blocking of the impeller due to a deposition of these particles in the sealing gap is prevented.
  • slot-like recesses are provided on both sides of the impeller, which are offset from one another in the circumferential direction in order to avoid an impermissible reduction in the mechanical strength of the impeller.
  • a possible clogging of the slot-like recesses themselves is counteracted by the fact that at least one depression in the circumferential direction extending at a multiple of the slot groove width is formed on the housing at least in the area of the axial sealing gap section.
  • the housing of a side channel compressor consisting of two housing halves 2 and 3 is designated.
  • an impeller 4 is rotatably mounted by means of a shaft 5 which can be coupled to a drive, not shown in the drawing.
  • the impeller of the side channel compressor shown in FIG. 1 consists of a disk-shaped hub part 6 and a blade ring 7 arranged on its outer circumference.
  • the blade ring 7 has a greater width than the hub part 6, so that it is on both sides in the direction of the axis of rotation of the impeller 4 towered over.
  • the two housing halves 2 and 3 are designed such that they engage under the laterally projecting sections of the blade ring 7.
  • the dimensions of the housing halves 2 and 3 are made in relation to the impeller 4 such that a radial sealing gap section 10 and an axial sealing gap section 11 between the laterally projecting section 8 of the blade ring 7 and the engaging part 9 of the housing halves 2 and 3 consists. This ensures contactless rotation of the impeller 4 relative to the housing halves 2 and 3.
  • a larger leakage current can form via the slots 14 and the slot groove 15, which effectively represent an expansion of the sealing gap sections 10 and 11. This leads to a higher flow rate of the leak gas. As a result, lint-like or fiber-like dirt particles which have entered the cavity 17 are conveyed back into the side channel 16 through the slot groove 15 and the slot 14 in the region of the inlet opening 19.
  • depressions 20 are formed on the housing halves 2 and 3 in the region of the axial sealing gap section 11. Such depressions are only shown on the housing half 2 in the drawing. These depressions 20 extend in the radial direction approximately over the radial length of the slot grooves 15 and in the circumferential direction by a multiple of the width of the slot grooves 15. Through the depressions 20, a swirling of the leakage flow is achieved in the slot grooves 15 and thereby a deposition of dirt particles prevented. This swirling also acts back on the depressions 20 and thus also prevents dirt particles from being deposited in these depressions 20.
  • the depressions 20 are round, so that they can be produced easily.
  • FIG. 2 shows another embodiment of a side channel compressor, in which the blade ring 7 of the impeller 4 and the housing halves 2 and 3 do not overlap.
  • the blade ring 7 of the impeller 4 and the housing halves 2 and 3 do not overlap.
  • the blade ring 7 and the hub part 6 of the impeller 4 there is therefore only one axial sealing gap 21.
  • a groove 22 running parallel to the axial sealing gap 21 is provided in this transition area.
  • This groove 22 fulfills the same functions as the slots 14 and slot grooves 15 provided in the exemplary embodiment according to FIG. 1.
  • several grooves 22 on both sides of the impeller and also depressions 20 in can be distributed over the circumference of the impeller 4 the wall of the housing halves 2 and 3 may be provided.

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

Description

Die Erfindung betrifft einen Seitenkanalverdichter gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a side channel compressor according to the preamble of claim 1.

Ein solcher Seitenkanalverdichter ist durch das DE-U-87 04 066 bekannt. Bei diesem Seitenkanalverdichter ist in dem zwischen einem den Nabenteil des Laufrades seitlich überragenden Abschnitt des Schaufelkranzes und dem diesen Abschnitt untergreifenden Gehäuse gebildeten radialen Dichtspaltabschnitt ein radial in diesen Dichtspalt ragender Abstreifer angeordnet, durch den eine zu einer Blockierung des Laufrades führende Schmutzablagerung verhindert werden soll. Es hat sich nun gezeigt, daß bei einer derartigen Ausbildung eines Seitenkanalverdichters zwar beim Fördern von mit klebrigen oder feuchten Schmutzteilchen beladenen Gasen eine Blockierung des Laufrades durch sich im Dichtspalt ablagernde Schmutzteilchen verhindert wird, jedoch nicht, wenn das zu fördernde Gas mit flusen- oder faserartigen Schmutzteilchen beladen ist.Such a side channel compressor is known from DE-U-87 04 066. In this side-channel compressor, a stripper protruding radially into this sealing gap is arranged in the radial sealing gap section formed between a section of the blade ring projecting laterally beyond the hub part of the impeller and the housing under this section, by means of which a dirt deposit which leads to a blocking of the impeller is to be prevented. It has now been shown that with such a design of a side channel compressor, when the gas is loaded with sticky or moist dirt particles, a blocking of the impeller by dirt particles deposited in the sealing gap is prevented, but not if the gas to be conveyed is fluffy or fibrous Dirt particles is loaded.

Aufgabe der Erfindung ist es daher, einen Seitenkanalverdichter gemäß dem Gattungsbegriff des Anspruches 1 so auszubilden, daß auch bei der Förderung von mit flusen- oder faserartigen Teilchen beladenen Gasen eine Blockierung des Laufrades infolge einer Ablagerung dieser Teilchen im Dichtspalt verhindert wird.The object of the invention is therefore to design a side channel compressor according to the preamble of claim 1 so that even when pumping gases loaded with fluff or fibrous particles, a blocking of the impeller due to a deposition of these particles in the sealing gap is prevented.

Die Lösung der gestellten Aufgabe gelingt durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale. Durch die schlitzartige Ausnehmungen besteht eine von Leckgas vergleichsweise rasch durchströmte, umlaufende Verbindung zwischen dem Seitenkanal und dem zwischen dem Nabenteil und dem Gehäuse bestehenden Hohlraum. In dem Bereich der Auslaßöffnung des Seitenkanalverdichters strömt das Leckgas von dem Seitenkanal in diesen Hohlraum und im Bereich der Einlaßöffnung von dem Hohlraum wieder in den Seitenkanal. Über diese rasch durchströmte Verbindung werden die Staubteilchen abgeführt. Sich im Dichtspalt ablagernde Schmutzteilchen werden durch die Kanten der schlitzartigen Ausnehmung abgetragen, bevor sie zu einem vollständigen Zusetzen des Dichtspaltes und damit zu einem Blockieren des Laufrades führen.The problem is solved by the features specified in the characterizing part of claim 1. Due to the slot-like recesses, a circumferential connection between the side channel and the cavity existing between the hub part and the housing flows through the leakage gas comparatively quickly. In the area of the outlet opening of the side channel blower the leakage gas flows from the side channel into this cavity and in the region of the inlet opening from the cavity back into the side channel. The dust particles are discharged via this quickly flowed connection. Dirt particles that are deposited in the sealing gap are removed by the edges of the slot-like recess before they lead to a complete clogging of the sealing gap and thus to a blocking of the impeller.

Bei einer zweiflutigen Ausbildung des Seitenkanalverdichters werden zu beiden Seiten des Laufrades schlitzartige Ausnehmungen vorgesehen, die in Umfangsrichtung gegeneinander versetzt sind, um eine unzulässige Herabsetzung der mechanischen Festigkeit des Laufrades zu vermeiden.In the case of a dual-flow design of the side channel compressor, slot-like recesses are provided on both sides of the impeller, which are offset from one another in the circumferential direction in order to avoid an impermissible reduction in the mechanical strength of the impeller.

Bei einem Seitenkanalverdichter, bei dem der Schaufelkranz den Nabenteil mindestens auf einer Seite in Richtung der Drehachse seitlich überragt und das Gehäuse den den Nabenteil seitlich überragenden Abschnitt des Schaufelkranzes unter Bildung eines radialen Dichtspaltabschnittes zumindest teilweise untergreift, an welchen radialen Dichtspaltabschnitt sich ein axialer Dichtspalt anschließt, wird ein Zusetzen der beiden Dichtspaltabschnitte dadurch verhindert, daß am Grund mindestens einer durch zwei Schaufeln begrenzten Schaufelzelle ein sich durchgehend bis zum radialen Dichtungsspaltabschnitt erstreckender Schlitz vorgesehen ist, an den sich eine am Nabenteil parallel zum axialen Dichtspaltabschnitt erstreckende Schlitznut anschließt.In the case of a side channel compressor in which the blade ring projects beyond the hub part laterally on at least one side in the direction of the axis of rotation and the housing at least partially engages under the portion of the blade ring projecting laterally beyond the hub part to form a radial sealing gap section, to which radial sealing gap section an axial sealing gap connects, clogging of the two sealing gap sections is prevented by providing at the bottom of at least one blade cell delimited by two blades a slot extending continuously to the radial sealing gap section, to which a slot groove extending parallel to the axial sealing gap section adjoins the hub part.

Einem möglichen Zusetzen der schlitzartigen Ausnehmungen selbst wird dadurch entgegengewirkt, daß am Gehäuse zumindest im Bereich des axialen Dichtspaltabschnittes mindestens eine sich in Umfangsrichtung um ein mehrfaches der Schlitznutbreite erstreckende Einsenkung ausgebildet ist.A possible clogging of the slot-like recesses themselves is counteracted by the fact that at least one depression in the circumferential direction extending at a multiple of the slot groove width is formed on the housing at least in the area of the axial sealing gap section.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles wird der Anmeldungsgegenstand nachfolgend näher beschrieben. Es zeigt:

FIG 1
einen vergrößerten Teilschnitt eines Seitenkanalverdichters,
FIG 2
einen Teilschnitt einer anderen Ausführungsform eines Seitenkanalverdichters,
FIG 3
ein Laufrad des in FIG 1 dargestellten Seitenkanalverdichters in Draufsicht,
FIG 4
eine Draufsicht einer Gehäusehälfte des in FIG 1 dargestellten Seitenkanalverdichters.

Based on an embodiment shown in the drawing the subject of the application is described in more detail below. It shows:
FIG. 1
an enlarged partial section of a side channel blower,
FIG 2
1 shows a partial section of another embodiment of a side channel compressor,
FIG 3
1 shows an impeller of the side channel compressor shown in FIG. 1 in plan view,
FIG 4
a plan view of a housing half of the side channel compressor shown in Figure 1.

Mit 1 ist das aus zwei Gehäusehälften 2 und 3 bestehende Gehäuse eines Seitenkanalverdichters bezeichnet. In dem Gehäuse 1 ist ein Laufrad 4 mittels einer Welle 5 drehbar gelagert, die mit einem in der Zeichnung nicht dargestellten Antrieb kuppelbar ist. Das Laufrad des in FIG 1 dargestellten Seitenkanalverdichters besteht aus einem scheibenförmigen Nabenteil 6 und einem an dessen Außenumfang angeordneten Schaufelkranz 7. Der Schaufelkranz 7 weist eine größere Breite als der Nabenteil 6 auf, so daß er diesen zu beiden Seiten in Richtung der Drehachse des Laufrades 4 überragt. Die beiden Gehäusehälften 2 und 3 sind derart ausgebildet, daß sie die seitlich überragenden Abschnitte des Schaufelkranzes 7 untergreifen. Die Abmessungen der Gehäusehälften 2 und 3 sind in Bezug auf das Laufrad 4 so getroffen, daß zwischen dem seitlich überragenden Abschnitt 8 des Schaufelkranzes 7 und dem untergreifenden Teil 9 der Gehäusehälften 2 und 3 ein radialer Dichtspaltabschnitt 10 sowie gegenüber dem Nabenteil 6 ein axialer Dichtspaltabschnitt 11 besteht. Damit ist ein berührungsloses Drehen des Laufrades 4 gegenüber den Gehäusehälften 2 und 3 gewährleistet.With 1, the housing of a side channel compressor consisting of two housing halves 2 and 3 is designated. In the housing 1, an impeller 4 is rotatably mounted by means of a shaft 5 which can be coupled to a drive, not shown in the drawing. The impeller of the side channel compressor shown in FIG. 1 consists of a disk-shaped hub part 6 and a blade ring 7 arranged on its outer circumference. The blade ring 7 has a greater width than the hub part 6, so that it is on both sides in the direction of the axis of rotation of the impeller 4 towered over. The two housing halves 2 and 3 are designed such that they engage under the laterally projecting sections of the blade ring 7. The dimensions of the housing halves 2 and 3 are made in relation to the impeller 4 such that a radial sealing gap section 10 and an axial sealing gap section 11 between the laterally projecting section 8 of the blade ring 7 and the engaging part 9 of the housing halves 2 and 3 consists. This ensures contactless rotation of the impeller 4 relative to the housing halves 2 and 3.

Zwischen den einzelnen Schaufeln 12 des Schaufelkranzes 7 bestehen Schaufelzellen 13. Am Grund mehrerer solcher Schaufelzellen 13 ist ein sich durchgehend bis zu dem radialen Dichtspaltabschnitt 10 erstreckender Schlitz 14 vorgesehen. Dieser Schlitz setzt sich am Nabenteil 6 in einer parallel zum axialen Dichtspaltabschnitt verlaufenden Schlitznut 15 fort. Somit ist über den Schlitz 14 und die Schlitznut 15 eine Verbindung zwischen dem Seitenkanal 16 des Seitenkanalverdichters und dem zwischen dem Nabenteil 6 und den beiden Gehäusehälften 2 und 3 des Gehäuses 1 bestehenden Hohlraum 17 geschaffen. Bei einem zweiflutig ausgebildeten Laufrad 4 sind zu beiden Seiten des Laufrades 4 solche Schlitze 14 und Schlitznuten 15 vorgesehen, wie dies durch die gestrichelte Darstellung in FIG 3 angedeutet ist. Dabei sind die Schlitze 14 und Schlitznuten 15 auf beiden Seiten des Laufrades 4 gegeneinander umfangsmäßig versetzt, um eine unzulässige Schwächung der mechanischen Festigkeit des Laufrades 4 zu vermeiden.There are blade cells 13 between the individual blades 12 of the blade ring 7. At the bottom of a plurality of such blade cells 13 there is a slot 14 which extends all the way to the radial sealing gap section 10. This Slot continues on the hub part 6 in a slot groove 15 running parallel to the axial sealing gap section. A connection between the side channel 16 of the side channel compressor and the cavity 17 existing between the hub part 6 and the two housing halves 2 and 3 of the housing 1 is thus created via the slot 14 and the slot groove 15. In the case of an impeller 4 of double flow, such slots 14 and slot grooves 15 are provided on both sides of the impeller 4, as is indicated by the broken line in FIG. 3. The slots 14 and slot grooves 15 on both sides of the impeller 4 are circumferentially offset from one another in order to avoid an impermissible weakening of the mechanical strength of the impeller 4.

Wegen des zwischen dem an die Auslaßöffnung 18 angrenzenden Bereich und dem an die Einlaßöffnung 19 angrenzenden Bereich bestehenden Druckunterschiedes ergibt sich über die Dichtspaltabschnitte 10 und 11 eine Leckströmung, die von dem an die Auslaßöffnung 18 angrenzenden Bereich zu dem an die Einlaßöffnung 19 angrenzenden Bereich gerichtet ist. Im Bereich der Auslaßöffnung 18 strömt somit Leckgas vom Seitenkanal 16 in den Hohlraum 17, das im Bereich der Einlaßöffnung 19 vom Hohlraum 17 wieder in den Seitenkanal 16 einströmt.Because of the pressure difference existing between the area adjacent to the outlet opening 18 and the area adjacent to the inlet opening 19, there is a leakage flow via the sealing gap sections 10 and 11, which is directed from the area adjacent to the outlet opening 18 to the area adjacent to the inlet opening 19 . In the area of the outlet opening 18, leakage gas thus flows from the side channel 16 into the cavity 17, which in the area of the inlet opening 19 flows back into the side channel 16 from the cavity 17.

Über die Schlitze 14 und die Schlitznut 15, die wirkungsmäßig eine Erweiterung der Dichtspaltabschnitte 10 und 11 darstellen, kann sich ein größerer Leckstrom ausbilden. Dies führt zu einer höheren Strömungsgeschwindigkeit des Leckgases. Hierdurch werden in den Hohlraum 17 gelangte flusen- oder faserartige Schmutzteilchen im Bereich der Einlaßöffnung 19 durch die Schlitznut 15 und den Schlitz 14 wieder in den Seitenkanal 16 zurückgefördert.A larger leakage current can form via the slots 14 and the slot groove 15, which effectively represent an expansion of the sealing gap sections 10 and 11. This leads to a higher flow rate of the leak gas. As a result, lint-like or fiber-like dirt particles which have entered the cavity 17 are conveyed back into the side channel 16 through the slot groove 15 and the slot 14 in the region of the inlet opening 19.

Sich in dem radialen und axialen Dichtspaltabschnitt 10 und 11 ablagernde Schmutzteilchen werden durch die Kanten der Schlitze 14 und Schlitznuten 15 abgetragen und von dem die Dichtspalt abschnitte 10 und 11 durchströmenden Leckstrom mit hinweggeführt. Somit können derartige Ablagerungen nicht zu einem vollständigen Zusetzen der Dichtspaltabschnitte 10 und 11 und damit zu einem Blockieren des Laufrades 4 führen.Dirt particles that are deposited in the radial and axial sealing gap sections 10 and 11 are removed by the edges of the slots 14 and slot grooves 15 and from which the sealing gap sections 10 and 11 flowing through leakage current. Thus, such deposits cannot lead to a complete blockage of the sealing gap sections 10 and 11 and thus to a blocking of the impeller 4.

Um Schmutzablagerungen in den Schlitzen 14 und Schlitznuten 15 selbst und damit ein Verstopfen derselben zu verhindern, sind im Bereich des axialen Dichtspaltabschnittes 11 an den Gehäusehälften 2 und 3 Einsenkungen 20 ausgebildet. In der Zeichnung sind derartige Einsenkungen nur an der Gehäusehälfte 2 dargestellt. Diese Einsenkungen 20 erstrecken sich in radialer Richtung etwa über die radiale Länge der Schlitznuten 15 und in Umfangsrichtung um ein mehrfaches der Breite der Schlitznuten 15. Durch die Einsenkungen 20 wird in den Schlitznuten 15 eine sich bis in die Schlitze fortsetzende Verwirbelung der Leckströmung erreicht und dadurch eine Ablagerung von Schmutzteilchen verhindert. Diese Verwirbelung wirkt außerdem auf die Einsenkungen 20 zurück und verhindert damit auch eine Ablagerung von Schmutzteilchen in diesen Einsenkungen 20. Vorteilhafterweise sind die Einsenkungen 20 rund ausgebildet, so daß sie leicht hergestellt werden können.In order to prevent dirt deposits in the slots 14 and slot grooves 15 themselves and thus to prevent them from becoming blocked, depressions 20 are formed on the housing halves 2 and 3 in the region of the axial sealing gap section 11. Such depressions are only shown on the housing half 2 in the drawing. These depressions 20 extend in the radial direction approximately over the radial length of the slot grooves 15 and in the circumferential direction by a multiple of the width of the slot grooves 15. Through the depressions 20, a swirling of the leakage flow is achieved in the slot grooves 15 and thereby a deposition of dirt particles prevented. This swirling also acts back on the depressions 20 and thus also prevents dirt particles from being deposited in these depressions 20. Advantageously, the depressions 20 are round, so that they can be produced easily.

Die FIG 2 zeigt eine andere Ausführungsform eines Seitenkanalverdichters, bei der der Schaufelkranz 7 des Laufrades 4 und die Gehäusehälften 2 und 3 nicht einander übergreifen. In dem Übergangsbereich zwischen dem Schaufelkranz 7 und dem Nabenteil 6 des Laufrades 4 besteht somit nur ein axialer Dichtspalt 21. Am Laufrad 4 ist in diesem Übergangsbereich eine zu dem axialen Dichtspalt 21 parallel verlaufende Nut 22 vorgesehen. Diese Nut 22 erfüllt die gleichen Funktionen wie die bei dem Ausführungsbeispiel nach FIG 1 vorgesehenen Schlitze 14 und Schlitznuten 15. Auch bei dieser anderen Ausführungsform des Seitenkanalverdichters können über den Umfang des Laufrades 4 verteilt mehrere Nuten 22 auf beiden Seiten des Laufrades und ebenso Einsenkungen 20 in der Wand der Gehäusehälften 2 und 3 vorgesehen sein.2 shows another embodiment of a side channel compressor, in which the blade ring 7 of the impeller 4 and the housing halves 2 and 3 do not overlap. In the transition area between the blade ring 7 and the hub part 6 of the impeller 4 there is therefore only one axial sealing gap 21. On the impeller 4, a groove 22 running parallel to the axial sealing gap 21 is provided in this transition area. This groove 22 fulfills the same functions as the slots 14 and slot grooves 15 provided in the exemplary embodiment according to FIG. 1. Also in this other embodiment of the side channel compressor, several grooves 22 on both sides of the impeller and also depressions 20 in can be distributed over the circumference of the impeller 4 the wall of the housing halves 2 and 3 may be provided.

Claims (4)

1. A side channel compressor with a runner (4) rotatably mounted in its housing, which consists of one bucket ring (7), arranged on one disc shaped hub part (6), and one arranged on the outer circumference of this hub part (6), in which compressor in the transfer region of bucket ring (7) and hub part (6) there is provided a packed sealing gap (10, 11; 21), characterised in that in the transfer region of the bucket ring (7) and the hub part (6) on the runner (4), there is provided at least one slit-like recess (14, 15 or 22), representing an extension relative to the packed sealing gap (10, 11 or 21), which recess extends over the full active length of the packed sealing gap (10, 11, or 21).
2. A side channel compressor according to claim 1, characterised in that with a double-flow construction of the compressor at both sides of the runner (4), there are provided slit-like recesses (14, 15 or 21), which are offset, relative to each other in the circumferential direction.
3. A side channel compressor according to claim 1 or 2, in which the bucket ring (7) overlaps laterally the hub part (6), at least on one side in the direction of the rotary axis, and the housing (1) reaches at least partially below the section (8) of the bucket ring (7) overlapping laterally the hub part (6), with formation of a radial packed sealing gap section (10), to which radial packed sealing gap section (10) there connects an axial packed sealing gap section (11), characterised in that on the base of at least one blade segment (13), defined by two blades (12), there is provided a slit extending continuously to the radial packed sealing gap section (10), to which there connects a slit groove (15), extending on the hub part (6), parallel to the axial packed sealing gap section (11).
4. A side channel compressor according to claim 1, 2 or 3, characterised in that on the housing (1) at least in the region of the axial packed sealing gap section (11) there is formed at least one depression (20), extending in the circumferential direction by a multiple of the width of the slit groove (15).
EP88120298A 1988-12-05 1988-12-05 Side channel compressor Expired - Lifetime EP0372104B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP88120298A EP0372104B1 (en) 1988-12-05 1988-12-05 Side channel compressor
DE8888120298T DE3863775D1 (en) 1988-12-05 1988-12-05 SIDE CHANNEL COMPRESSORS.
US07/440,986 US4992022A (en) 1988-12-05 1989-11-22 Side channel compressor
JP1989139332U JPH0278796U (en) 1988-12-05 1989-11-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88120298A EP0372104B1 (en) 1988-12-05 1988-12-05 Side channel compressor

Publications (2)

Publication Number Publication Date
EP0372104A1 EP0372104A1 (en) 1990-06-13
EP0372104B1 true EP0372104B1 (en) 1991-07-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120298A Expired - Lifetime EP0372104B1 (en) 1988-12-05 1988-12-05 Side channel compressor

Country Status (4)

Country Link
US (1) US4992022A (en)
EP (1) EP0372104B1 (en)
JP (1) JPH0278796U (en)
DE (1) DE3863775D1 (en)

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Also Published As

Publication number Publication date
EP0372104A1 (en) 1990-06-13
US4992022A (en) 1991-02-12
DE3863775D1 (en) 1991-08-22
JPH0278796U (en) 1990-06-18

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