EP1831550A1 - Reciprocating piston machine - Google Patents

Reciprocating piston machine

Info

Publication number
EP1831550A1
EP1831550A1 EP05800589A EP05800589A EP1831550A1 EP 1831550 A1 EP1831550 A1 EP 1831550A1 EP 05800589 A EP05800589 A EP 05800589A EP 05800589 A EP05800589 A EP 05800589A EP 1831550 A1 EP1831550 A1 EP 1831550A1
Authority
EP
European Patent Office
Prior art keywords
housing
bearing
radial
bearing sleeve
collar
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.)
Granted
Application number
EP05800589A
Other languages
German (de)
French (fr)
Other versions
EP1831550B1 (en
Inventor
Jan Hinrichs
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.)
Ixetic Mac GmbH
Original Assignee
Ixetic Mac GmbH
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 Ixetic Mac GmbH filed Critical Ixetic Mac GmbH
Publication of EP1831550A1 publication Critical patent/EP1831550A1/en
Application granted granted Critical
Publication of EP1831550B1 publication Critical patent/EP1831550B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/1054—Actuating elements
    • F04B27/1063—Actuating-element bearing means or driving-axis bearing means

Definitions

  • the invention relates to a reciprocating piston engine, such as an air-conditioning compressor for motor vehicles, having a housing, having a rotationally driven shaft, having a shaft sealing device, in particular a mechanical seal, having at least one radial shaft bearing, in particular a radial rolling bearing, having at least one axial shaft bearing, in particular an axial shaft bearing.
  • a reciprocating piston engine such as an air-conditioning compressor for motor vehicles, having a housing, having a rotationally driven shaft, having a shaft sealing device, in particular a mechanical seal, having at least one radial shaft bearing, in particular a radial rolling bearing, having at least one axial shaft bearing, in particular an axial shaft bearing.
  • xialen roller bearing wherein in the housing within an opening into the housing hinein ⁇ projecting bearing sleeve is arranged, which receives at least the radial shaft bearing.
  • the bearing sleeve and the housing is connected to each other for example by a weld, wherein the weld is arranged in an area with high alternating loads and in the case of failure of the weld there is the possibility that solve parts of the Ge housing.
  • a reciprocating piston engine such as air conditioning compressor for motor vehicles, with a housing, with a shaft rotatable, with a shaft sealing device, in particular a mechanical seal, with at least one radial shaft bearing, in particular a radial rolling bearing, with at least one axial shaft bearing, in particular an axial roller bearing, wherein in the housing within a opening a hinein ⁇ in the housing hinein ⁇ projecting bearing sleeve is arranged, which receives at least the radial shaft bearing, wherein the bearing sleeve has a first collar, seen in the axial direction, on the housing side of in ⁇ NEN outside, within the housing on an annular support surface in a Aus ⁇ recess within the housing comes into abutment, so that on the bearing sleeve, seen from the housing side, from the inside to the outside acting axial forces form-fitting from the housing numeronom ⁇ men (introduced into the housing) can be ,
  • a reciprocating piston engine in which the first bearing collar a second, smaller-diameter collar, seen from the housing side, from the inside to the outside, axially upstream, which engages through an opening of the housing. Furthermore, a reciprocating engine is preferred in which the first collar with the second collar represents a common stepped collar, which passes through the opening of the housing in a form-fitting manner in the radial and axial directions.
  • a reciprocating piston engine according to the invention is characterized in that the radial outer region of the second collar with the radial inner region of the opening of the housing represents a common area for introducing a weld seam.
  • a reciprocating engine is preferred in which the bearing sleeve receives the axial shaft bearing on an axial end face within the housing. Furthermore, a reciprocating piston engine is preferred in which the bearing sleeve receives the radial shaft bearing within a radial recess. Also, a reciprocating engine is preferred in which the bearing sleeve receives within a further radial recess a mechanical seal.
  • a further reciprocating piston engine according to the invention is characterized in that the bearing sleeve has lubricant openings for the mechanical seal and the radial shaft bearing between the regions in which the mechanical seal and the radial shaft position are arranged. Also, a reciprocating engine is preferred in which the bearing sleeve radially outwardly within the housing has a groove which serves as a lubricant collecting groove and contains the lubricant openings.
  • a further reciprocating piston engine according to the invention is characterized in that the bearing sleeve outside the housing has a region for receiving a rolling bearing of a Rie ⁇ menular.
  • Figure 1 shows a bearing sleeve according to the invention in cross section in a part of the housing.
  • FIG. 2 shows in section a compressor in the region of the bearing sleeve according to the invention.
  • Figure 3 shows a perspective view of a bearing sleeve according to the invention and the corresponding housing.
  • a bearing sleeve 5 is inserted in an opening 3.
  • the opening 3 has a smaller diameter part 7 and larger diameter part 9, so that the opening 3 is practically represented as a stepped annular opening.
  • the larger diameter part 9 of the stepped bore of the housing is slightly widened by a radial outward-running undercut.
  • this stepped Ausneh ⁇ tion 3 of the housing 1 engages the bearing sleeve 5 with a smaller diameter collar 13 and a larger diameter collar 15, so that an axial bearing surface 17 between the bearing sleeve 5 and the housing part 1 results.
  • FIG. 2 shows a cross section through the corresponding part of the air conditioning compressor with the housing part 1 and the bearing sleeve 5.
  • the bearing sleeve 5 is penetrated by a drive shaft 23, which is mounted with an axial shaft bearing 25 on an axial end surface 27 of the bearing sleeve 5. Furthermore, in the region 29 of the bearing sleeve 5, the shaft 23 with a mounted radial roller bearing 31.
  • a Gleitring ⁇ seal with a fixed part 35 and a rotating member 37 is arranged.
  • lubricant passage openings 39 are arranged inside the sleeve, which open outwardly from the interior of the sleeve 5 in a circumferential groove 41 around the sleeve 5.
  • the groove 41 serves as a lubricant collecting groove in the drive chamber of the compressor and via the openings 39 directs the lubricant into the area of the bearing sleeve between the mechanical seal 35/37 and the radial roller bearing 31.
  • a rolling bearing 45 is arranged, which supports the pulley 47.
  • both the bearing surfaces for the radial roller bearing 31 and the radial roller bearing 45 can be produced in a voltage, and thus a tolerance-favorable machining can be realized.
  • a small component can be used for machining the bearing seats, which is easier to clamp and to handle than a large one-piece one Housing, which otherwise would have to have these corresponding bearing seats.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Valve Device For Special Equipments (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

A reciprocating piston machine, such as an air-conditioning compressor for motor vehicles, having a housing, a rotationally drivable shaft, a shaft sealing device, in particular a mechanical shaft seal, at least one radial shaft bearing, especially a radial rolling-contact bearing, and at least one axial shaft bearing, in particular an axial rolling-contact bearing, a bearing sleeve which accommodates at least the radial shaft bearing, being configured within an opening in the housing, extending into the same.

Description

Hubkolbenmaschine reciprocating engine
Die Erfindung betrifft eine Hubkolbenmaschine, wie Klimakompressor für Kraftfahrzeuge, mit einem Gehäuse, mit einer drehantreibbaren Welle, mit einer Wellenabdichtvorrichtung, insbe¬ sondere einer Gleitringdichtung, mit mindestens einer radialen Wellenlagerung, insbesondere einem Radialwälzlager, mit mindestens einer axialen Wellenlagerung, insbesondere einem a- xialen Wälzlager, wobei in dem Gehäuse innerhalb einer Öffnung eine in das Gehäuse hinein¬ ragende Lagerhülse angeordnet ist, die mindestens das radiale Wellenlager aufnimmt.The invention relates to a reciprocating piston engine, such as an air-conditioning compressor for motor vehicles, having a housing, having a rotationally driven shaft, having a shaft sealing device, in particular a mechanical seal, having at least one radial shaft bearing, in particular a radial rolling bearing, having at least one axial shaft bearing, in particular an axial shaft bearing. xialen roller bearing, wherein in the housing within an opening into the housing hinein¬ projecting bearing sleeve is arranged, which receives at least the radial shaft bearing.
Derartige Hubkolbenmaschinen sind bekannt.Such reciprocating engines are known.
Dabei wird die Lagerhülse und das Gehäuse beispielsweise durch eine Schweißnaht miteinander verbunden, wobei die Schweißnaht in einem Bereich mit hohen wechselnden Belastungen an¬ geordnet ist und bei Versagen der Schweißnaht die Möglichkeit besteht, dass sich Teile des Ge¬ häuses lösen.In this case, the bearing sleeve and the housing is connected to each other for example by a weld, wherein the weld is arranged in an area with high alternating loads and in the case of failure of the weld there is the possibility that solve parts of the Ge housing.
Es ist daher Aufgabe der Erfindung, eine Hubkolbenmaschine aufzuzeigen, die diese Nachteile nicht aufweist.It is therefore an object of the invention to show a reciprocating engine that does not have these disadvantages.
Die Aufgabe wird gelöst durch eine Hubkolbenmaschine, wie Klimakompressor für Kraftfahrzeu¬ ge, mit einem Gehäuse, mit einer drehantreibbaren Welle, mit einer Wellenabdichtvorrichtung, insbesondere einer Gleitringdichtung, mit mindestens einer radialen Wellenlagerung, insbeson¬ dere einem Radialwälzlager, mit mindestens einer axialen Wellenlagerung, insbesondere einem axialen Wälzlager, wobei in dem Gehäuse innerhalb einer Öffnung eine in das Gehäuse hinein¬ ragende Lagerhülse angeordnet ist, die mindestens das radiale Wellenlager aufnimmt, wobei die Lagerhülse einen ersten Bund aufweist, der in axialer Richtung, gehäuseseitig gesehen von in¬ nen nach außen, innerhalb des Gehäuses auf einer ringförmigen Auflagefläche in einer Aus¬ nehmung innerhalb des Gehäuses zur Anlage kommt, so dass auf die Lagerhülse, gehäuseseitig gesehen, von innen nach außen wirkende Axialkräfte formschlüssig vom Gehäuse aufgenom¬ men (in das Gehäuse eingeleitet) werden können.The object is achieved by a reciprocating piston engine, such as air conditioning compressor for motor vehicles, with a housing, with a shaft rotatable, with a shaft sealing device, in particular a mechanical seal, with at least one radial shaft bearing, in particular a radial rolling bearing, with at least one axial shaft bearing, in particular an axial roller bearing, wherein in the housing within a opening a hinein¬ in the housing hinein¬ projecting bearing sleeve is arranged, which receives at least the radial shaft bearing, wherein the bearing sleeve has a first collar, seen in the axial direction, on the housing side of in¬ NEN outside, within the housing on an annular support surface in a Aus¬ recess within the housing comes into abutment, so that on the bearing sleeve, seen from the housing side, from the inside to the outside acting axial forces form-fitting from the housing aufgenom¬ men (introduced into the housing) can be ,
Bevorzugt wird eine Hubkolbenmaschine, bei welcher dem ersten Anlagebund ein zweiter, durchmesserkleinerer Bund, gehäuseseitig gesehen von innen nach außen, axial vorgelagert ist, der eine Öffnung des Gehäuses durchgreift. Weiterhin wird eine Hubkolbenmaschine bevorzugt, bei welcher der erste Bund mit dem zweiten Bund einen gemeinsamen gestuften Bund darstellt, der die Öffnung des Gehäuses formschlüssig in radialer und axialer Richtung durchgreift.Preference is given to a reciprocating piston engine, in which the first bearing collar a second, smaller-diameter collar, seen from the housing side, from the inside to the outside, axially upstream, which engages through an opening of the housing. Furthermore, a reciprocating engine is preferred in which the first collar with the second collar represents a common stepped collar, which passes through the opening of the housing in a form-fitting manner in the radial and axial directions.
Eine erfindungsgemäße Hubkolbenmaschine zeichnet sich dadurch aus, dass der radiale Außenbereich des zweiten Bundes mit dem radialen Innenbereich der Öffnung des Gehäuses einen gemeinsamen Bereich zur Einbringung einer Schweißnaht darstellt. Das hat den Vorteil, dass die Schweißnaht im Hinblick auf Axialkräfte der axialen Wellenlagerung im Bereich geringer Beanspruchung liegt, da die Axialkräfte durch den ersten Bund in das Gehäuse eingeleitet wer¬ den können. Selbst bei einem Versagen der Schweißnaht würde die Lagerhülse durch die Axial¬ kräfte formschlüssig innerhalb des Gehäuses festgehalten.A reciprocating piston engine according to the invention is characterized in that the radial outer region of the second collar with the radial inner region of the opening of the housing represents a common area for introducing a weld seam. This has the advantage that the weld in terms of axial forces of the axial shaft bearing is in the range of low stress, since the axial forces can be introduced into the housing through the first collar. Even if the weld would fail, the bearing sleeve would be positively held within the housing by the axial forces.
Weiterhin wird eine Hubkolbenmaschine bevorzugt, bei welcher die Lagerhülse auf einer axialen Stirnfläche innerhalb des Gehäuses die axiale Wellenlagerung aufnimmt. Weiterhin wird eine Hubkolbenmaschine bevorzugt, bei welcher die Lagerhülse innerhalb einer radialen Ausneh¬ mung die radiale Wellenlagerung aufnimmt. Auch wird eine Hubkolbenmaschine bevorzugt, bei welcher die Lagerhülse innerhalb einer weiteren radialen Ausnehmung eine Gleitringdichtung aufnimmt.Furthermore, a reciprocating engine is preferred in which the bearing sleeve receives the axial shaft bearing on an axial end face within the housing. Furthermore, a reciprocating piston engine is preferred in which the bearing sleeve receives the radial shaft bearing within a radial recess. Also, a reciprocating engine is preferred in which the bearing sleeve receives within a further radial recess a mechanical seal.
Eine weitere erfindungsgemäße Hubkolbenmaschine zeichnet sich dadurch aus, dass die Lagerhülse zwischen den Bereichen, in denen die Gleitringdichtung und die radiale Wellenlage¬ rung angeordnet sind, Schmiermittelöffnungen für die Gleitringdichtung und das radiale Wellen¬ lager aufweist. Auch wird eine Hubkolbenmaschine bevorzugt, bei welcher die Lagerhülse radial außen innerhalb des Gehäuses eine Nut aufweist, welche als Schmiermittelauffangnut dient und die Schmiermittelöffnungen enthält.A further reciprocating piston engine according to the invention is characterized in that the bearing sleeve has lubricant openings for the mechanical seal and the radial shaft bearing between the regions in which the mechanical seal and the radial shaft position are arranged. Also, a reciprocating engine is preferred in which the bearing sleeve radially outwardly within the housing has a groove which serves as a lubricant collecting groove and contains the lubricant openings.
Eine weitere erfindungsgemäße Hubkolbenmaschine zeichnet sich dadurch aus, dass die Lagerhülse außerhalb des Gehäuses einen Bereich zur Aufnahme eines Wälzlagers einer Rie¬ menscheibe aufweist.A further reciprocating piston engine according to the invention is characterized in that the bearing sleeve outside the housing has a region for receiving a rolling bearing of a Rie¬ menscheibe.
Insgesamt weist die Verwendung einer derartigen Lagerhülse in Kombination mit einem Klimakompressorgehäuse den Vorteil auf, dass ein kleines Lagerhülsenbauteil einfacher zu spannen und zu bearbeiten ist als ein großes Gehäuse und dass die Innenlagersitze und die Au- ßenlagersitze in einer Spannung bearbeitet werden können und damit engere Toleranzen und ein besserer Lauf der Maschine ermöglicht wird. Die Erfindung wird nun anhand der Figuren beschrieben:Overall, the use of such a bearing sleeve in combination with an air conditioning compressor housing has the advantage that a small bearing sleeve component is easier to clamp and work than a large housing and that the inner bearing seats and the outer bearing seats can be edited in a voltage and thus tighter tolerances and a better run of the machine is made possible. The invention will now be described with reference to the figures:
Figur 1 zeigt eine erfindungsgemäße Lagerhülse im Querschnitt in einem Teil des Gehäuses.Figure 1 shows a bearing sleeve according to the invention in cross section in a part of the housing.
Figur 2 zeigt im Schnitt einen Kompressor im Bereich der erfindungsgemäßen Lagerhülse.FIG. 2 shows in section a compressor in the region of the bearing sleeve according to the invention.
Figur 3 zeigt in einer perspektivischen Darstellung eine erfindungsgemäße Lagerhülse und das entsprechende Gehäuse.Figure 3 shows a perspective view of a bearing sleeve according to the invention and the corresponding housing.
In einem Gehäuseabschnitt 1 eines Klimakompressors ist in einer Öffnung 3 eine Lagerhülse 5 eingesetzt. Die Öffnung 3 weist einen durchmesserkleineren Teil 7 und durchmessergrößeren Teil 9 auf, so dass die Öffnung 3 sich praktisch als eine gestufte ringförmige Öffnung darstellt. Im Bereich 11 ist der durchmessergrößere Teil 9 der Stufenbohrung des Gehäuses durch eine radi¬ al nach außen verlaufende Hinterschneidung noch etwas erweitert. In diese gestufte Ausneh¬ mung 3 des Gehäuses 1 greift die Lagerhülse 5 mit einem durchmesserkleineren Bund 13 und mit einem durchmessergrößeren Bund 15 ein, so dass sich eine axiale Anlagefläche 17 zwi¬ schen der Lagerhülse 5 und dem Gehäuseteil 1 ergibt. Da auf die Lagerhülse 5 in Richtung des Pfeils 19 Axialkräfte über ein Axialwellenlager aus dem Triebwerk des Kompressors wirken, wird auf der Anlagefläche 17 die Lagerhülse 5 formschlüssig gegen das Gehäuse 1 gepresst. Somit werden über die Anlagefläche 17 die Axialkräfte aus dem Kompressortriebwerk in das Gehäuse 1 eingeleitet. Dadurch liegt der durchmesserkleinere Bund 7 des Gehäuses bzw. der durchmes¬ serkleinere Bund 13 der Lagerhülse 5 in einem Bereich, in dem keine Axialkräfte mehr wirken. Somit ist dieser Bereich 21 zwischen dem Gehäusebund 7 und dem Lagerhülsenbund 13 als Be¬ reich geringer Beanspruchung erfindungsgemäß dazu geeignet, hier eine Schweißnaht zur Ver¬ bindung der Lagerhülse 5 mit dem Gehäuse 1 herzustellen. Selbst wenn unter irgendwelchen Umständen die Schweißnaht in diesem Bereich 21 schadhaft werden würde, so sorgen die Axi¬ alkräfte des Triebwerks in Pfeilrichtung 19 dafür, dass die Lagerhülse 5 durch die Axialkräfte formschlüssig gegen das Gehäuse 1 gepresst werden und damit die Funktion zwischen der La¬ gerhülse 5 und dem Gehäusel aufrecht erhalten wird.In a housing section 1 of an air conditioning compressor, a bearing sleeve 5 is inserted in an opening 3. The opening 3 has a smaller diameter part 7 and larger diameter part 9, so that the opening 3 is practically represented as a stepped annular opening. In the area 11, the larger diameter part 9 of the stepped bore of the housing is slightly widened by a radial outward-running undercut. In this stepped Ausneh¬ tion 3 of the housing 1 engages the bearing sleeve 5 with a smaller diameter collar 13 and a larger diameter collar 15, so that an axial bearing surface 17 between the bearing sleeve 5 and the housing part 1 results. Since axial forces act on the bearing sleeve 5 in the direction of the arrow 19 via an axial shaft bearing from the engine of the compressor, the bearing sleeve 5 is pressed against the housing 1 in a form-fitting manner on the contact surface 17. Thus, the axial forces are introduced from the compressor engine in the housing 1 via the contact surface 17. As a result, the smaller-diameter collar 7 of the housing or the smaller collar 13 of the bearing sleeve 5 lies in a region in which no axial forces act anymore. Thus, according to the invention, this region 21 between the housing collar 7 and the bearing sleeve collar 13 as a region of low stress is suitable for producing a weld seam for connecting the bearing sleeve 5 to the housing 1. Even if under some circumstances, the weld in this area 21 would be defective, the axial forces of the engine in the direction of arrow 19 ensure that the bearing sleeve 5 are pressed by the axial forces positively against the housing 1 and thus the function between the La¬ gerhülse 5 and the housing is maintained.
In Figur 2 ist ein Querschnitt durch den entsprechenden Teil des Klimakompressors mit dem Gehäuseteil 1 und der Lagerhülse 5 dargestellt. Die Lagerhülse 5 wird von einer Antriebswelle 23 durchgriffen, welche mit einem axialen Wellenlager 25 auf einer axialen Abschlussfläche 27 der Lagerhülse 5 gelagert ist. Weiterhin ist im Bereich 29 der Lagerhülse 5 die Welle 23 mit einem radialen Wälzlager 31 gelagert. In einem vorderen Bereich 33 der Lagerhülse 5 ist eine Gleitring¬ dichtung mit einem festen Teil 35 und mit einem rotierenden Teil 37 angeordnet. Zwischen dem Bereich 29 des Radialwälzlagers und dem Bereich 33 der Gleitringdichtung sind innerhalb der Hülse 5 Schmiermitteldurchtrittsöffnungen 39 angeordnet, die vom Innenraum der Hülse 5 nach außen in eine um die Hülse 5 umlaufende Nut 41 einmünden. Die Nut 41 dient dabei im Trieb¬ raum des Kompressors als Schmiermittelauffangnut und leitet über die Öffnungen 39 das Schmiermittel in den Bereich der Lagerhülse zwischen der Gleitringdichtung 35/37 und dem Ra¬ dialwälzlager 31. Somit wird sowohl die Gleitringdichtung 35/37 als auch das Radialwälzlager 31 innerhalb der Lagerhülse 5 mit Schmiermittel versorgt. Auf dem Außenumfang 43 der Lagerhülse 5 außerhalb des Gehäuses 1 ist ein Wälzlager 45 angeordnet, welches die Riemenscheibe 47 lagert. Somit können bei Herstellung der Lagerhülse 5 sowohl die Lagerflächen für das Radial¬ wälzlager 31 als auch das Radialwälzlager 45 in einer Spannung hergestellt werden und damit eine toleranzgünstige Bearbeitung realisiert werden. Dabei ist durch die Aufteilung des Kom¬ pressorgehäuses in einen großen Gehäuseteil 1 und einen kleineren Lagerhülsenteil 5 gewähr¬ leistet, dass für die Bearbeitung der Lagersitze ein kleines Bauteil verwendet werden kann, wel¬ ches leichter zu spannen und zu bearbeiten ist als ein großes einteiliges Gehäuse, welches an¬ sonsten diese entsprechenden Lagersitze aufweisen müsste.FIG. 2 shows a cross section through the corresponding part of the air conditioning compressor with the housing part 1 and the bearing sleeve 5. The bearing sleeve 5 is penetrated by a drive shaft 23, which is mounted with an axial shaft bearing 25 on an axial end surface 27 of the bearing sleeve 5. Furthermore, in the region 29 of the bearing sleeve 5, the shaft 23 with a mounted radial roller bearing 31. In a front region 33 of the bearing sleeve 5, a Gleitring¬ seal with a fixed part 35 and a rotating member 37 is arranged. Between the region 29 of the radial roller bearing and the region 33 of the mechanical seal 5 lubricant passage openings 39 are arranged inside the sleeve, which open outwardly from the interior of the sleeve 5 in a circumferential groove 41 around the sleeve 5. The groove 41 serves as a lubricant collecting groove in the drive chamber of the compressor and via the openings 39 directs the lubricant into the area of the bearing sleeve between the mechanical seal 35/37 and the radial roller bearing 31. Thus, both the mechanical seal 35/37 and the Radial rolling bearing 31 supplied within the bearing sleeve 5 with lubricant. On the outer circumference 43 of the bearing sleeve 5 outside of the housing 1, a rolling bearing 45 is arranged, which supports the pulley 47. Thus, when the bearing sleeve 5 is produced, both the bearing surfaces for the radial roller bearing 31 and the radial roller bearing 45 can be produced in a voltage, and thus a tolerance-favorable machining can be realized. In this case, by dividing the compressor housing into a large housing part 1 and a smaller bearing sleeve part 5, it is ensured that a small component can be used for machining the bearing seats, which is easier to clamp and to handle than a large one-piece one Housing, which otherwise would have to have these corresponding bearing seats.
In Figur 3a ist die Lagerhülse 5 und das komplette Gehäusebauteil 1 separat und in Figur 3b im zusammengebauten Zustand dargestellt. Im Bereich 21 zwischen dem Gehäuse 1 und der La¬ gerhülse 5 wird die entsprechende Schweißnaht angebracht, wobei vorzugsweise in diesem Be¬ reich eine Laserschweißung vorzunehmen ist, die auf einem sehr schmalen Bereich mit einer großen Tiefe, wie im Querschnitt von Figur 1 im Bereich 21 zu erkennen, hergestellt werden kann.In Figure 3a, the bearing sleeve 5 and the complete housing component 1 is shown separately and in Figure 3b in the assembled state. In the region 21 between the housing 1 and the La¬ gerhülse 5, the corresponding weld is attached, which is preferably in this range Be¬ laser welding is carried out on a very narrow area with a large depth, as in the cross section of Figure 1 in the area 21 can be produced.
Die erfindungsgemäße Lösung der entsprechenden Gestaltung der Lagerhülse 5 und des Gehäuseteils 1 führen damit durch die bessere Bearbeitbarkeit der Hülse 5 zu einer Kostenre¬ duktion und durch die entsprechende Positionierung der Stufenbunde und der Schweißnaht zu einer Erhöhung der Bauteilsicherheit. Auch bei einem Versagen der Schweißnaht wird durch den Formschluss zwischen der Hülse 5 und dem Gehäuse 1 in Richtung der Axialkräfte 19 eine si¬ chere, formschlüssige Verbindung gewährleistet. BezugszeichenlisteThe inventive solution of the corresponding design of the bearing sleeve 5 and the housing part 1 thus lead by the better machinability of the sleeve 5 to a Kostenre¬ production and by the corresponding positioning of the step collars and the weld to an increase in component safety. Even with a failure of the weld is ensured by the positive connection between the sleeve 5 and the housing 1 in the direction of the axial forces 19 a si¬ chere, positive connection. LIST OF REFERENCE NUMBERS
I Gehäuse Klimakompressor 3 Öffnung im GehäuseI housing air conditioning compressor 3 opening in the housing
5 Lagerhülse5 bearing sleeve
7 durchmesserkleinerer Teil der Öffnung7 smaller diameter part of the opening
9 durchmessergrößerer Teil der Öffnung9 larger diameter part of the opening
I 1 Hinterschneidungsbereich der Stufenbohrung 13 durchmesserkleinerer Bund der Lagerhülse 15 durchmessergrößerer Bund der LagerhülseI 1 undercut region of the stepped bore 13 smaller diameter collar of the bearing sleeve 15 larger diameter collar of the bearing sleeve
17 axiale Anlagefläche der Lagerhülse17 axial contact surface of the bearing sleeve
19 Richtung der Axialkräfte19 direction of the axial forces
21 Bereich geringer Beanspruchung durch Axialkräfte (Schweißnahtbereich)21 area of low stress due to axial forces (weld area)
23 Antriebswelle23 drive shaft
25 axiales Wellenlager25 axial shaft bearing
27 axiale Abschlussfläche der Lagerhülse27 axial end surface of the bearing sleeve
29 Bereich für radiales Wälzlager29 Radial bearing area
31 radiales Wälzlager31 radial rolling bearing
33 Bereich der Lagerhülse für Gleitringdichtung33 Area of the bearing sleeve for the mechanical seal
35 fester Teil der Gleitringdichtung35 fixed part of the mechanical seal
37 rotierender Teil der Gleitringdichtung37 rotating part of the mechanical seal
39 Schmiermitteldurchtrittsöffnungen39 lubricant passage openings
41 umlaufende Schmiermittelauffangnut41 circumferential lubricant collecting groove
43 Außenumfang der Lagerhülse außerhalb des Gehäuses43 outer circumference of the bearing sleeve outside the housing
45 Wälzlager für Riemenscheibe45 Rolling bearings for pulley
47 Riemenscheibe 47 Pulley

Claims

Patentansprüche claims
1. Hubkolbenmaschine, wie Klimakompressor für Kraftfahrzeuge, mit einem Gehäuse(1), mit einer drehantreibbaren Welle (23), mit einer Wellenabdichtvorrichtung, insbesondere einer Gleitringdichtung (35, 37), mit mindestens einer radialen Wellenlagerung, insbesondere ei¬ nem Radialwälzlager (31), mit mindestens einer axialen Wellenlagerung, insbesondere ei¬ nem axialen Wälzlager (25), wobei in dem Gehäuse (1) innerhalb einer Öffnung (3) eine in das Gehäuse (1) hineinragende Lagerhülse (5) angeordnet ist, die mindestens das radiale Wellenlager (31) aufnimmt, dadurch gekennzeichnet, dass die Lagerhülse (5) einen ersten Bund (15) aufweist, der in axialer Richtung, gehäuseseitig gesehen von innen nach außen, innerhalb des Gehäuses (1) auf einer ringförmigen Aufnahmefläche (17) in einer Ausneh¬ mung (9) innerhalb des Gehäuses (1) zur Anlage kommt, so dass auf die Lagerhülse (5), gehäuseseitig gesehen, von innen nach außen wirkende Axialkräfte (19) formschlüssig vom Gehäuse (1) aufgenommen werden können.1. Reciprocating engine, such as air conditioning compressor for motor vehicles, with a housing (1), with a rotatably driven shaft (23), with a Wellenabdichtvorrichtung, in particular a mechanical seal (35, 37), with at least one radial shaft bearing, in particular ei¬ NEM Radialwälzlager (31 ), with at least one axial shaft bearing, in particular ei¬ nem axial roller bearing (25), wherein in the housing (1) within an opening (3) into the housing (1) projecting bearing sleeve (5) is arranged, at least the radial Shaft bearing (31) receives, characterized in that the bearing sleeve (5) has a first collar (15), seen in the axial direction, the housing side from the inside to the outside, within the housing (1) on an annular receiving surface (17) in one Ausneh¬ tion (9) within the housing (1) comes to rest, so that on the bearing sleeve (5), seen from the housing side, from the inside to the outside acting axial forces (19) form fit of Gehä use (1) can be recorded.
2. Hubkolbenmaschine nach Anspruch 1 , dadurch gekennzeichnet, dass dem ersten Anlage¬ bund (15) ein zweiter, durchmesserkleinerer Bund (13), gehäuseseitig gesehen von innen nach außen, axial vorgelagert ist, der eine Öffnung (3) des Gehäuses (1) durchgreift.2. Reciprocating piston engine according to claim 1, characterized in that the first Anlage¬ collar (15) has a second, smaller diameter collar (13), on the housing side seen from the inside to the outside, axially upstream of an opening (3) of the housing (1) be upheld.
3. Hubkolbenmaschine nach Anspruch 2, dadurch gekennzeichnet, dass der erste Bund (15) mit dem zweiten Bund (13) einen gemeinsamen gestuften Bund darstellt, der die Öffnung (3) des Gehäuses (1) formschlüssig in radialer und axialer Richtung durchgreift.3. Reciprocating piston engine according to claim 2, characterized in that the first collar (15) with the second collar (13) represents a common stepped collar, which engages through the opening (3) of the housing (1) in a form-fitting manner in the radial and axial directions.
4. Hubkolbenmaschine nach Anspruch 2 oder Anspruch 3, dadurch gekennzeichnet, dass der radiale Außenbereich des zweiten Bundes (13) mit dem radialen Innenbereich (7) der Öffnung (3) des Gehäuses (1) einen gemeinsamen Bereich (21) zur Einbringung einer Schweißnaht darstellt.4. Reciprocating piston engine according to claim 2 or claim 3, characterized in that the radial outer region of the second collar (13) with the radial inner region (7) of the opening (3) of the housing (1) has a common region (21) for introducing a weld represents.
5. Hubkolbenmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeich¬ net, dass die Lagerhülse (5) auf einer axialen Stirnfläche (27) innerhalb des Gehäuses (1) die axiale Wellenlagerung (25) aufnimmt.5. A reciprocating engine according to any one of the preceding claims, characterized gekennzeich¬ net, that the bearing sleeve (5) on an axial end face (27) within the housing (1) receives the axial shaft bearing (25).
6. Hubkolbenmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeich¬ net, dass die Lagerhülse (5) innerhalb einer radialen Ausnehmung (29) die radiale Wellen¬ lagerung (31) aufnimmt. 6. Reciprocating piston engine according to one of the preceding claims, characterized gekennzeich¬ net, that the bearing sleeve (5) within a radial recess (29) receives the radial Wellen¬ storage (31).
7. Hubkolbenmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeich¬ net, dass die Lagerhülse (5) innerhalb einer weiteren radialen Ausnehmung (33) die Gleit¬ ringdichtung (35, 37) aufnimmt.7. A reciprocating engine according to one of the preceding claims, characterized gekennzeich¬ net, that the bearing sleeve (5) within a further radial recess (33), the Gleit¬ ring seal (35, 37) receives.
8. Hubkolbenmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeich¬ net, dass die Lagerhülse (5) zwischen den, Bereichen (29, 33), in denen die radiale Wellen¬ lagerung (31) und die Gleitringdichtung (35, 37) angeordnet sind, Schmiermittelöffnungen (39) für die Gleitringdichtung (35, 37) und das Radialwellenlager (31) aufweist.8. A reciprocating piston engine according to one of the preceding claims, characterized gekennzeich¬ net, that the bearing sleeve (5) between the, areas (29, 33) in which the radial Wellen¬ storage (31) and the seal (35, 37) are arranged , Lubricant openings (39) for the mechanical seal (35, 37) and the radial shaft bearing (31).
9. Hubkolbenmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeich¬ net, dass die Lagerhülse (5) radial außen innerhalb des Gehäuses (1) eine Nut (41) auf¬ weist, welche als Schmiermittelauffangnut dient und die Schmiermittelöffnungen (39) ent¬ hält.9. Reciprocating piston engine according to one of the preceding claims, characterized gekennzeich¬ net, that the bearing sleeve (5) radially outwardly within the housing (1) has a groove (41) auf¬ has, which serves as a lubricant collecting groove and the lubricant openings (39) ent holds ,
10. Hubkolbenmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeich¬ net, dass die Lagerhülse (5) außerhalb des Gehäuses (1) einen Bereich (42) zur Aufnah¬ me eines Wälzlagers (45) einer Riemenscheibe (47) aufweist. 10. A reciprocating piston engine according to one of the preceding claims, characterized gekennzeich¬ net, that the bearing sleeve (5) outside the housing (1) has a region (42) for Aufnah¬ me a rolling bearing (45) of a pulley (47).
EP05800589A 2004-11-05 2005-10-20 Reciprocating piston machine Not-in-force EP1831550B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004053483 2004-11-05
PCT/DE2005/001869 WO2006047985A1 (en) 2004-11-05 2005-10-20 Reciprocating piston machine

Publications (2)

Publication Number Publication Date
EP1831550A1 true EP1831550A1 (en) 2007-09-12
EP1831550B1 EP1831550B1 (en) 2008-03-19

Family

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EP05800589A Not-in-force EP1831550B1 (en) 2004-11-05 2005-10-20 Reciprocating piston machine

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US (1) US8322270B2 (en)
EP (1) EP1831550B1 (en)
JP (1) JP4928459B2 (en)
CN (1) CN100570153C (en)
AT (1) ATE389802T1 (en)
DE (1) DE502005003400D1 (en)
WO (1) WO2006047985A1 (en)

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US8517665B2 (en) * 2010-12-21 2013-08-27 Hamilton Sundstrand Corporation Thrust bearing shaft for thrust and journal air bearing cooling in an air machine

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Also Published As

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JP4928459B2 (en) 2012-05-09
US20080223210A1 (en) 2008-09-18
WO2006047985A1 (en) 2006-05-11
US8322270B2 (en) 2012-12-04
CN101052803A (en) 2007-10-10
EP1831550B1 (en) 2008-03-19
CN100570153C (en) 2009-12-16
JP2008519199A (en) 2008-06-05
ATE389802T1 (en) 2008-04-15
DE502005003400D1 (en) 2008-04-30

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