EP0545191B1 - Scroll-type fluid displacement machine - Google Patents
Scroll-type fluid displacement machine Download PDFInfo
- Publication number
- EP0545191B1 EP0545191B1 EP92119878A EP92119878A EP0545191B1 EP 0545191 B1 EP0545191 B1 EP 0545191B1 EP 92119878 A EP92119878 A EP 92119878A EP 92119878 A EP92119878 A EP 92119878A EP 0545191 B1 EP0545191 B1 EP 0545191B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- displacement
- spiral
- magnesium alloy
- machine
- 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
Links
- 238000006073 displacement reaction Methods 0.000 title claims description 23
- 239000012530 fluid Substances 0.000 title description 2
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F01C1/0207—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F01C1/0215—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
- F01C1/0223—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving with symmetrical double wraps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
Definitions
- Displacement machine for compressible media with a plurality of spiral conveying spaces arranged in a fixed housing, which lead from a radially outer inlet to a radially inner outlet, and with a displacer assigned to the conveying spaces, essentially consisting of a disk with spiral strips arranged vertically on both sides, the eccentrically driven displacement body executes a circular movement delimited by the circumferential walls of the delivery chamber with each of its points during operation.
- Displacement machines of the spiral type are known from DE-C-26 03 462.
- a compressor constructed according to this principle is characterized by an almost pulsation-free conveyance of the gaseous working medium, which consists, for example, of air or an air-fuel mixture, and could therefore also be used with advantage for charging purposes of internal combustion engines, among other things.
- the gaseous working medium which consists, for example, of air or an air-fuel mixture
- a plurality of approximately crescent-shaped working spaces are trapped along the displacement chamber between the spiral-shaped displacement body and the two peripheral walls of the displacement chamber, which work spaces move from the inlet through the displacement chamber to the outlet.
- a machine of the type mentioned at the outset is known from EP-A-0 354 342.
- the former causes even steeper temperature gradients in the disk, the latter leads to greater inertia forces.
- the displacement body is therefore preferably made of a light metal alloy, for example magnesium.
- the mass forces acting on the main eccentric bearing can thus be minimized.
- the two housing halves of such a machine mostly consist of an inexpensive die-cast aluminum.
- the invention has for its object to provide a displacement machine of the type mentioned, in which the same starting material can be used for the parts in operative connection with each other.
- the object is achieved in that the displacement body consists of a magnesium alloy and that at least the walls forming the conveying spaces in the circumferential direction of the spirals are made of a magnesium alloy.
- the advantage of the invention is to be seen in the fact that in the event of the displacer and housing coming into contact, the material that is used cannot be run-in. This would not be the case with the aluminum rotor, for example.
- the conveying spaces arranged in the housing and the webs delimiting them are produced in one piece with the housing and if the entire housing is thus made of a magnesium alloy.
- the most bulky parts of a spiral machine are namely the housing halves; they form the majority of the weight.
- the displacement machine which as a whole becomes much lighter due to the new measures, also requires lighter supports at the installation site. If this installation site is, for example, an internal combustion engine to be charged, the lighter design has a particularly favorable effect on the vibration behavior of the overall system.
- Fig. 1 the housing with the delivery rooms and the inserted displacer is shown.
- the rotor of the machine is designated as a whole by 1.
- two spiral-shaped displacers are arranged, which are offset by 180 ° to one another. These are strips 3a, 3b which are held vertically on the pane 2.
- the spirals themselves are formed from a plurality of circular arcs adjoining one another.
- 4 with the hub is designated, via which the disc 2 with a roller bearing 22 is seated on an eccentric disc 23 (FIG. 2). This disk is in turn part of the main shaft 24.
- the elements 2, 3a, 3b, 4 and 5 are made in one piece from a magnesium alloy.
- FIG. 1 shows the housing half 7b shown on the left in FIG. 2 of the machine housing, which is composed of two halves 7a, 7b and is connected to one another via fastening eyes 8 for receiving screw connections.
- 11a and 11b denote the two delivery spaces, each offset by 180 °, which are worked into the two housing halves in the manner of a spiral slot. They each run from an inlet 12a, 12b arranged on the outer circumference of the spiral in the housing to an outlet 13 provided in the interior of the housing and common to both delivery spaces. They have essentially parallel cylinder walls 14a, 14b, 15a, 15b arranged at a constant distance from one another. which, like the displacement bodies of the disk 2, comprise a spiral of 360 °.
- the displacers 3a, 3b engage between these cylinder walls, the curvature of which is dimensioned such that the strips almost touch the inner and outer cylinder walls of the housing at several, for example at two points each.
- seals 49 are inserted in corresponding grooves. With them, the working rooms against the side walls of the housing respectively. sealed against the displacement disc.
- the two housing halves 7a and 7b together with the webs 45 and 46 forming the conveying spaces 11a and 11b are also made of a magnesium alloy, which does not necessarily have to be the same as that of the displacement body.
- Both parts can be cast or forged.
- the drive and the guide of the rotor 1 are provided by the two spaced-apart eccentric arrangements 23, 24 and. 26, 27.
- the main shaft 24 is supported in a roller bearing 17 and a slide bearing 18. At its end protruding from the housing half 7b, the shaft is provided with a V-belt pulley 19 for the drive.
- Counterweights 20 are arranged on the shaft to compensate for the inertial forces arising when the rotor is eccentrically driven.
- the guide shaft 27 is inserted in a sliding bearing 28 within the housing half 7b.
- the two eccentric arrangements are synchronized with precise angles. This is done via a toothed belt drive 16.
- the double eccentric drive ensures that all points of the rotor disk and thus also all points of the two strips 3a, 3b perform a circular displacement movement.
- alternating approaches of the strips 3a, 3b to the inner and outer cylinder walls of the associated delivery chambers - a direct mutual contact being harmless due to the materials used - result on both sides of the Form crescent-shaped work spaces that enclose the working medium and that are moved through the delivery chambers towards the outlet while the rotor disk is being driven.
- the volumes of these working spaces decrease and the pressure of the working fluid is increased accordingly.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Description
Verdrängermaschine für kompressible Medien mit mehreren in einem feststehenden Gehäuse angeordneten spiralförmigen Förderräumen, welche von einem radial aussenliegenden Einlass zu einem radial innenliegenden Auslass führen, und mit einem den Förderräumen Zugeordneten Verdrängerkörper, im wesentlichen bestehend aus einer Scheibe mit an beiden Seiten senkrecht angeordneten spiralförmigen Leisten, wobei der exzentrisch angetriebene Verdrängerkörper während des Betriebes mit jedem seiner Punkte eine von den Umfangswänden des Förderraumes begrenzte Kreisbewegung ausführt.Displacement machine for compressible media with a plurality of spiral conveying spaces arranged in a fixed housing, which lead from a radially outer inlet to a radially inner outlet, and with a displacer assigned to the conveying spaces, essentially consisting of a disk with spiral strips arranged vertically on both sides, the eccentrically driven displacement body executes a circular movement delimited by the circumferential walls of the delivery chamber with each of its points during operation.
Verdrängermaschinen der Spiralbauart sind durch die DE-C-26 03 462 bekannt. Ein nach diesem Prinzip aufgebauter Verdichter zeichnet sich durch eine nahezu pulsationsfreie Förderung des beispielsweise aus Luft oder einem Luft-Kraftstoff-Gemisch bestehenden gasförmigen Arbeitsmittels aus und könnte daher unter anderem auch für Aufladezwecke von Brennkraftmaschinen mit Vorteil herangezogen werden. Während des Betriebes eines solchen Kompressors werden entlang der Verdrängerkammer zwischen dem spiralförmig ausgebildeten Verdrängerkörper und den beiden Umfangswänden der Verdrängerkammer mehrere, etwa sichelförmige Arbeitsräume eingeschlossen, die sich von dem Einlass durch die Verdrängerkammer hindurch zum Auslass hin bewegen.Displacement machines of the spiral type are known from DE-C-26 03 462. A compressor constructed according to this principle is characterized by an almost pulsation-free conveyance of the gaseous working medium, which consists, for example, of air or an air-fuel mixture, and could therefore also be used with advantage for charging purposes of internal combustion engines, among other things. During the operation of such a compressor, a plurality of approximately crescent-shaped working spaces are trapped along the displacement chamber between the spiral-shaped displacement body and the two peripheral walls of the displacement chamber, which work spaces move from the inlet through the displacement chamber to the outlet.
Eine Maschine der eingangs genannten Art ist bekannt aus der EP-A-0 354 342. Um das Bauvolumen der Maschine besser auszunutzen, geht die Entwicklungstendenz in Richtung höherer Druckverhältnisse und höherer Drehzahlen. Ersteres bedingt noch steilere Temperaturgradienten in der Scheibe, letzteres führt zu grösseren Massenkräften. Der Verdrängerkörper wird deshalb bevorzugt aus einer Leichtmetallegierung, beispielsweise Magnesium, ausgeführt. Damit können die auf das Hauptexzenterlager wirkenden Massenkräfte minimiert werden. Die beiden Gehäusehälften einer solchen Maschine bestehen meistens aus einem kostengünstigen Aluminium-Druckguss. Mit entsprechend steifer Konstruktion der Antriebswelle und der Lagerpartie des Läufers können sich bei dieser Materialpaarung die Spiralwände des Verdrängerkörpers und der Gehäusestege in Spiral-Umfangsrichtung berühren. Die Materialien arbeiten sich auf das Spiel 0 (null) ein, ohne dass Fresserscheinungen an einem der beteiligten Elemente zu erwarten sind. Dieser Sachverhalt hat zum einen eine grössere Toleranzbreite anlässlich der mechanischen Bearbeitung der Elemente zur Folge und ermöglicht zum andern höhere Einsatztemperaturen der Maschine im Betrieb.A machine of the type mentioned at the outset is known from EP-A-0 354 342. In order to make better use of the construction volume of the machine, the trend is towards higher pressure ratios and higher speeds. The former causes even steeper temperature gradients in the disk, the latter leads to greater inertia forces. The displacement body is therefore preferably made of a light metal alloy, for example magnesium. The mass forces acting on the main eccentric bearing can thus be minimized. The two housing halves of such a machine mostly consist of an inexpensive die-cast aluminum. With a correspondingly rigid construction of the drive shaft and the bearing section of the rotor, the spiral walls of the displacer body and the housing webs can touch in the spiral circumferential direction with this material pairing. The materials work their way into the game 0 (zero) without any signs of feeding on one of the elements involved. On the one hand, this fact results in a larger tolerance range for the mechanical processing of the elements and, on the other hand, it enables higher operating temperatures of the machine in operation.
Ausgehend von der Absicht, weiterhin von den Vorteilen der Magnesiumlegierungen wie Gewicht, Reibeigenschaften und dergleichen Gebrauch zu machen, und von der Tatsache, dass bei der Serienfertigung einer derartigen Maschine eine Trennung der Aluminium- von der Magnesiumbearbeitung erforderlich ist, was zu erhöhten Investitionen führt, stellt sich der Erfindung die Aufgabe, eine Verdrängungsmaschine der eingangs genannten Art zu schaffen, bei welcher das gleiche Ausgangsmaterial für die in Wirkverbindung miteinanderstehenden Teile verwendet werden kann.Starting from the intention to continue to take advantage of magnesium alloys such as weight, friction properties and the like, and from the fact that the serial production of such a machine requires a separation of aluminum and magnesium processing, which leads to increased investments, the invention has for its object to provide a displacement machine of the type mentioned, in which the same starting material can be used for the parts in operative connection with each other.
Die Aufgabe wird dadurch gelöst, daß der Verdrängerkörper aus einer Magnesiumlegierung besteht und daß zumindest die die Förderräume im Umfangsrichtung der Spiralen bildenden Wandungen aus einer Magnesiumlegierung gefertigt sind.The object is achieved in that the displacement body consists of a magnesium alloy and that at least the walls forming the conveying spaces in the circumferential direction of the spirals are made of a magnesium alloy.
Der Vorteil der Erfindung ist darin zu sehen, dass im Falle der Berührung von Verdränger und Gehäuse auf die Einlauffähigkeit des verwendeten Materials nicht verzichtet werden muss. Dies wäre beispielsweise bei der Aluminiumläufer nicht der Fall.The advantage of the invention is to be seen in the fact that in the event of the displacer and housing coming into contact, the material that is used cannot be run-in. This would not be the case with the aluminum rotor, for example.
Es ist besonders zweckmässig, wenn die im Gehäuse angeordneten Förderräume und die sie begrenzenden Stege einteilig mit dem Gehäuse hergestellt sind und wenn somit das gesamte Gehäuse aus einer Magnesiumlegierung gefertigt ist. Die voluminösten Teile einer Spiralmaschine sind nämlich die Gehäusehälften; sie bilden den überwiegenden Gewichtsanteil. Die durch die neue Massnahne insgesamt wesentlich leichter werdende Verdrängermaschine bedingt in der Folge auch leichtere Abstützungen am Aufstellungsort. Ist dieser Aufstellungsort zum Beispiel ein aufzuladender Verbrennungsmotor, so wirkt sich die leichtere Bauart insbesondere günstig auf das Schwingverhalten des Gesamtsystemes aus.It is particularly expedient if the conveying spaces arranged in the housing and the webs delimiting them are produced in one piece with the housing and if the entire housing is thus made of a magnesium alloy. The most bulky parts of a spiral machine are namely the housing halves; they form the majority of the weight. The displacement machine, which as a whole becomes much lighter due to the new measures, also requires lighter supports at the installation site. If this installation site is, for example, an internal combustion engine to be charged, the lighter design has a particularly favorable effect on the vibration behavior of the overall system.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung schematisch dargestellt.In the drawing, an embodiment of the invention is shown schematically.
Es zeigen:
- Fig. 1
- einen Querschnitt durch das antriebsseitige Gehäuseteil der Verdrängermaschine nach Linie I-I in Fig. 2;
- Fig. 2
- einen Längsschnitt durch die Verdrängermaschine;
- Fig. 1
- a cross section through the drive-side housing part of the displacement machine according to line II in Fig. 2;
- Fig. 2
- a longitudinal section through the displacement machine;
Zwecks Erläuterung der Funktionsweise des Verdichters, welche nicht Gegenstand der Erfindung ist, wird auf die bereits genannte DE-C3-2 603 462 verwiesen. Nachstehend wird nur der für das Verständnis notwendige Maschinenaufbau und Prozessablauf kurz beschrieben.In order to explain the operation of the compressor, which is not the subject of the invention, reference is made to the already mentioned DE-C3-2 603 462. In the following, only the machine structure and process flow necessary for understanding are briefly described.
In Fig. 1 ist das Gehäuse mit den Förderräumen und dem eingelegten Verdränger gezeigt. Mit 1 ist der Läufer der Maschine insgesamt bezeichnet. An beiden Seiten der Scheibe 2 sind je zwei, um 180° zueinander versetzte, spiralförmig verlaufende Verdrängerköper angeordnet. Es handelt sich um Leisten 3a, 3b, die senkrecht auf der Scheibe 2 gehalten sind. Die Spiralen selbst sind im gezeigten Beispiel aus mehreren, aneinander anschliessenden Kreisbögen gebildet. Mit 4 ist die Nabe bezeichnet, über welche die Scheibe 2 mit einem Wälzlager 22 auf einer Exzenterscheibe 23 sitzt (Fig. 2). Diese Scheibe ist ihrerseits Teil der Hauptwelle 24.In Fig. 1, the housing with the delivery rooms and the inserted displacer is shown. The rotor of the machine is designated as a whole by 1. On both sides of the
Mit 5 ist ein radial ausserhalb der Leisten 3a, 3b angeordnetes Auge bezeichnet für die Aufnahme eines Führungslagers 25, welches auf einem Exzenterbolzen 26 aufgezogen ist. Dieser ist seinerseits Teil einer Führungswelle 27. Am Spiralende sind in der Scheibe vier Durchtrittsfenster 6, 6' vorgesehen, damit das Medium von einer Scheibenseite zur andern gelangen kann, um in einem nur einseitig angeordneten zentralen Auslass 13 (Fig. 2) abgezogen zu werden.5 with a radially outside the
Die Elemente 2, 3a, 3b, 4 und 5 sind einteilig aus einer Magnesiumlegierung gefertigt.The
In Fig. 1 ist die in Fig. 2 links dargestellte Gehäusehälfte 7b des aus zwei Hälften 7a, 7b zusammengesetzten, über Befestigungsaugen 8 zur Aufnahme von Verschraubungen miteinander verbundenen Maschinengehäuses gezeigt. 11a und 11b bezeichnen die zwei jeweils um 180° gegeneinander versetzten Förderräume, die nach Art eines spiralförmigen Schlitzes in die beiden Gehäusehälften eingearbeitet sind. Sie verlaufen von je einem am äusseren Umfang der Spirale im Gehäuse angeordneten Einlass 12a, 12b zu einem im Gehäuseinneren vorgesehenen, beiden Förderräumen gemeinsamen Auslass 13. Sie weisen im wesentlichen parallele, in gleichbleibendem Abstand zueinander angeordnete Zylinderwände 14a, 14b, 15a, 15b auf, die wie die Verdrängerkörper der Scheibe 2 eine Spirale von 360° umfassen. Zwischen diesen Zylinderwänden greifen die Verdrängerkörper 3a, 3b ein, deren Krümmung so bemessen ist, dass die Leisten die inneren und die äusseren Zylinderwände des Gehäuses an mehreren, beispielsweise an jeweils zwei Stellen nahezu berühren. An den freien Stirnseiten der Leisten 3a, 3b und der Stege 45, 46 sind Dichtungen 49 in entsprechenden Nuten eingelegt. Mit ihnen werden die Arbeitsräume gegen die Seitenwände des Gehäuses resp. gegen die Verdrängerscheibe gedichtet.1 shows the
Gemäss der Erfindung sind nunmehr beim gezeigten Beispiel die beiden Gehäusehälften 7a und 7b zusammen mit den die Förderräume 11a und 11b bildenden Stege 45 und 46 ebenfalls aus einer Magnesiumlegierung gefertigt, die nicht notwendigerweise die gleiche sein muss wie jene des Verdrängerkörpers.According to the invention, in the example shown, the two
Es kann sich dabei bei beiden Teilen um eine Guss- oder um eine Schmiedekonstruktion handeln.Both parts can be cast or forged.
Fertigungsvorteile sind in der Art zu erwarten, dass nunmehr
- Verdränger und Gehäuse auf der gleichen Fräsmaschine bearbeitet werden können;
- dass bei der Magnesiumzerspanung die Fräswerkzeuge wesentlich höhere Standzeiten aufweisen als bei der Aluminiumzerspanung;
- dass die Magnesiumzerspanung weniger Energie braucht;
- und dass infolge des kleineren Energieverbrauchs die Zerspanungsmaschine eine kleinere Antriebseinheit benötigt.
- Displacer and housing can be machined on the same milling machine;
- that the milling tools have a significantly longer service life in the case of magnesium cutting than in the case of aluminum cutting;
- that magnesium cutting requires less energy;
- and that due to the lower energy consumption, the cutting machine requires a smaller drive unit.
Den Antrieb und die Führung des Läufers 1 besorgen die zwei beabstandeten Exzenteranordnungen 23, 24 resp. 26, 27. Die Hauptwelle 24 ist in einem Wälzlager 17 und einem Gleitlager 18 gelagert. An ihrem aus der Gehäusehälfte 7b herausragendem Ende ist die Welle mit einer Keilriemenscheibe 19 für den Antrieb versehen. Auf der Welle sind Gegengewichte 20 angeordnet zum Ausgleich der beim exzentrischen Antrieb des Läufers entstehenden Massenkräfte. Die Führungswelle 27 ist innerhalb der Gehäusehälfte 7b in einem Gleitlager 28 eingelegt.The drive and the guide of the rotor 1 are provided by the two spaced-apart
Um in den Totpunktlagen eine eindeutige Führung des Läufers zu erzielen, sind die beiden Exzenteranordnungen winkelgenau synchronisiert. Dies geschieht über einen Zahnriemenantrieb 16. Anlässlich des Betriebes sorgt der Doppelexzenterantrieb dafür, dass alle Punkte der Läuferscheibe und damit auch alle Punkte der beiden Leisten 3a, 3b eine kreisförmige Verschiebebewegung ausführen. Infolge der mehrfachen abwechselnden Annäherungen der Leisten 3a, 3b an die inneren und äusseren Zylinderwände der zugeordneten Förderkammern - wobei eine direkte gegenseitige Berührung infolge der verwendeten Materialien unschädlich ist - ergeben sich auf beiden Seiten der Leisten sichelförmige, das Arbeitsmedium einschliessende Arbeitsräume, die während des Antriebs der Läuferscheibe durch die Förderkammern in Richtung auf den Auslass verschoben werden. Hierbei verringern sich die Volumina dieser Arbeitsräume und der Druck des Arbeitsmittels wird entsprechend erhöht.In order to achieve clear guidance of the rotor in the dead center positions, the two eccentric arrangements are synchronized with precise angles. This is done via a
- 11
- Läuferrunner
- 22nd
- Scheibedisc
- 3a, 3b3a, 3b
- Leistestrip
- 44th
- Nabehub
- 55
- Augeeye
- 6, 6'6, 6 '
- DurchtrittsfensterPassage window
- 7a, 7b7a, 7b
- GehäusehälfteHalf of the housing
- 88th
- BefestigungsaugeMounting eye
- 11a, 11b11a, 11b
- FörderraumFunding area
- 12a, 12b12a, 12b
- Einlassinlet
- 1313
- AuslassOutlet
- 14a, 14b14a, 14b
- ZylinderwandCylinder wall
- 15a, 15b15a, 15b
- ZylinderwandCylinder wall
- 1616
- ZahnriemenantriebTiming belt drive
- 1717th
- Wälzlager für 24Rolling bearings for 24
- 1818th
- Gleitlager für 24Slide bearing for 24
- 1919th
- KeilriemenscheibeV-belt pulley
- 2020th
- Gegengewicht an 24Counterweight on 24
- 2222
- Wälzlager für 23Rolling bearings for 23
- 2323
- ExzenterscheibeEccentric disc
- 2424th
- HauptwelleMain shaft
- 2525th
- FührungslagerGuide bearings
- 2626
- ExzenterbolzenEccentric bolt
- 2727
- FührungswelleGuide shaft
- 2828
- Gleitlager für 27Slide bearing for 27
- 45a, 45b45a, 45b
- Steg mit äusserer ZylinderwandBridge with outer cylinder wall
- 46a, 46b46a, 46b
- Steg mit innerer ZylinderwandBridge with inner cylinder wall
- 4949
- Dichtungpoetry
Claims (2)
- Displacement machine for compressible media, having a plurality of spiral-shaped delivery chambers (11a, 11b) which are disposed in a fixed housing (7a, 7b) and run from a radially outer inlet (12a, 12b) to a radially inner outlet (13), and having a displacement body assigned to the delivery chambers, essentially comprising a disc (2) having spiral-shaped strips (3a, 3b) disposed perpendicularly on both sides, the eccentrically driven displacement body performing with each of its points, during running, a circular motion limited by the peripheral walls of the delivery chamber,
characterized in that the displacement body consists of a magnesium alloy, and in that at least the walls which form the delivery chambers (11a, 11b) in the peripheral direction of the spirals are produced from a magnesium alloy. - Displacement machine according to Claim 1, characterized in that the webs (45, 46) which limit the delivery chambers (11a, 11b) are manufactured in one piece with the housing, and in that the whole of the housing is produced from a magnesium alloy.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH358191 | 1991-12-05 | ||
| CH3581/91 | 1991-12-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0545191A1 EP0545191A1 (en) | 1993-06-09 |
| EP0545191B1 true EP0545191B1 (en) | 1995-09-13 |
Family
ID=4259084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92119878A Expired - Lifetime EP0545191B1 (en) | 1991-12-05 | 1992-11-23 | Scroll-type fluid displacement machine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5356276A (en) |
| EP (1) | EP0545191B1 (en) |
| JP (1) | JPH05248375A (en) |
| DE (1) | DE59203677D1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5690480A (en) * | 1995-02-20 | 1997-11-25 | Hitachi, Ltd. | Scroll compressor with cooling holes in orbiting scroll |
| EP0899424B1 (en) * | 1997-08-26 | 2001-11-28 | CRT Common Rail Technologies AG | Scroll compressible fluid displacement machine |
| EP2195511B1 (en) * | 2007-08-22 | 2011-11-16 | Spinnler Engineering | Spiral-type positive-displacement machine |
| US9784359B2 (en) * | 2011-08-15 | 2017-10-10 | Volvo Lastvagnar Ab | Multi-ratio gearbox housing |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB278382A (en) * | 1926-09-30 | 1927-12-22 | Swiss Locomotive & Machine Works | Improvements connected with the pistons of rotary compressors |
| DE1525280B2 (en) * | 1966-05-07 | 1975-02-27 | Karl Schmidt Gmbh, 7107 Neckarsulm | Light alloy pistons for rotary piston machines |
| US3756754A (en) * | 1970-10-24 | 1973-09-04 | Nippon Piston Ring Co Ltd | Apex seal for rotary piston engine |
| CH586348A5 (en) * | 1975-02-07 | 1977-03-31 | Aginfor Ag | |
| JPS6412090A (en) * | 1987-07-02 | 1989-01-17 | Inoue Japax Res | Scroll pump |
| JPH01155001A (en) * | 1987-12-11 | 1989-06-16 | Toshiba Corp | Scroll fluid machine |
| DE58906623D1 (en) * | 1988-08-03 | 1994-02-17 | Aginfor Ag | Displacement machine based on the spiral principle. |
| JP2915047B2 (en) * | 1990-02-16 | 1999-07-05 | 株式会社日立製作所 | Scroll member and method of manufacturing the same |
-
1992
- 1992-11-23 EP EP92119878A patent/EP0545191B1/en not_active Expired - Lifetime
- 1992-11-23 DE DE59203677T patent/DE59203677D1/en not_active Expired - Fee Related
- 1992-12-04 JP JP4325396A patent/JPH05248375A/en active Pending
- 1992-12-07 US US07/985,653 patent/US5356276A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US5356276A (en) | 1994-10-18 |
| EP0545191A1 (en) | 1993-06-09 |
| DE59203677D1 (en) | 1995-10-19 |
| JPH05248375A (en) | 1993-09-24 |
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