DE3504547A1

DE3504547A1 - Rotary compressors having rigidly linked vane halves

Info

Publication number: DE3504547A1
Application number: DE19853504547
Authority: DE
Inventors: Max 7988 Wangen Streicher
Original assignee: ARMATEC FTS ARMATUREN
Current assignee: ARMATEC FTS ARMATUREN
Priority date: 1985-02-11
Filing date: 1985-02-11
Publication date: 1986-09-11

Abstract

Rotary compressors for fluids having slots passing through the centre are known. For the purpose of improved guidance, the vanes are provided with geared lugs. In practice, drawbacks were experienced in that the vanes in the cantilevered state were subject to considerable tilt and caused increased friction. In the case of vanes made of heavy materials, for example steel, there was the additional drawback of centrifugal force. The object of the invention is therefore to overcome these drawbacks by linking the vanes which are aligned with each other through the centre, as a result of which guidance is improved, centrifugal force largely cancels and consequently a higher rotational speed is possible. In order to achieve this change in the vane dimensions which match the diameter of the casing, a groove comprising a separate packing strip can be recessed. The packing strip is pressed outwards by means of springs, in order to ensure that it bears on the casing diameter, whatever the operating state. As the position of the linked vane halves with respect to the casing diameter can adjust freely, it is expedient to fit a catch to delimit the travel to the extent desired. This measure precludes the characteristic vibration. For reasons of simplicity, the delimitation can be achieved at the end faces of the casing, for example by attachments at the shaft journals.

Description

Beschreibungdescription

Rotationsverdichter mit festverbundenen Schieberhälften und federbelasteten Dichtleisten zum Längenausgleicht (Durchmesserausgleich) Rotationsverdichter mit exzentrischem Rotor, in welchem durch die Fliehkraft, Dichtschieber nach außen gedrängt werden, sind bekannt. ( K. Wittig Zell i. W. ) Die Schieber bewegen sich hier nicht zur Achsmitte, sondern tangieren einen Kreis, der etwa dem WellenauBendurchmesser entspricht.Rotary compressor with firmly connected slide halves and spring-loaded Sealing strips for length compensation (diameter compensation) Rotary compressor with eccentric rotor in which the centrifugal force pushes the sealing slide outwards are known. (K. Wittig Zell i. W.) The slide does not move here to the center of the axis, but tangent to a circle that is roughly the outer diameter of the shaft is equivalent to.

Weiterhin gibt es Rotationsverdichter (auch Ölpumpen), deren Schieber durch die Achsmitte laufen (Abb. 1). Da diese Schieber (1) bei einer Umdrehung des Rotors (2) zweimal ihre Länge verändern, sind sie in der Mitte geteilt und werden deshalb durch Federn (3) auseinandergedrückt, damit sie am inneren Gehäuseumfang (4) sicher anliegen und abdichten.There are also rotary compressors (including oil pumps) and their slides run through the center of the axle (Fig. 1). Since this slide (1) with one revolution of the Rotors (2) change their length twice, they are divided in the middle and are therefore pushed apart by springs (3) so that they are attached to the inner circumference of the housing (4) fit securely and seal.

Bei vier oder mehreren Schieberhälft-en (1) ist die Teilung nicht geradlinig, sondern in geeigneter Weise so verzahnt, daß die Führung der Schieberhälften (1) vergrößert wird.If there are four or more slide halves (1), there is no division straight, but geared in a suitable manner so that the guide of the slide halves (1) is enlarged.

In vorliegender Erfindung werden die beiden Schieberhälften (1) durch Laschen (5),(Abb. 2 u. 3) fest miteinander verbunden (durch Niet (5a), Punktschweissung, Verstiftung u.s.w) und zwar so, daß die Länge der verbundenen Schieberhälften (1) kleiner als die kleinste theoretische Schieberlänge ist.In the present invention, the two slide halves (1) are through Tabs (5), (Fig. 2 and 3) firmly connected to each other (by rivet (5a), spot welding, Pinning, etc.) in such a way that the length of the connected slide halves (1) is smaller than the smallest theoretical slide length.

Um nun die verbundenen Schieberhälften zum exzentrisch liegenden inneren Gehäuseumfang (4) abzudichten, werden die Schieberhälften an der Dichtkante mit einer Nut (6) versehen, in welcher eine Dichtleiste (7) durch eine Feder (11) nach außen zur Abdichtung gedrückt wird.To now the connected slider halves to the eccentric inner To seal the housing circumference (4), the slider halves are also attached to the sealing edge a groove (6) is provided, in which a sealing strip (7) by a spring (11) after is pressed outside to seal.

Diese Ausführung erleichtert die Schieberführung, weil der ganze Rotordurchmesser dafür zur Verfügung steht und weiterhin kann die Führung und die Abdichtung aus verschieden, besser geeigneten Werkstoffen bestehen (die Führung aus Stahl Messing u.s.w.,die Dichtleiste aus Metell, Kunststoffe, Keram-iken u.a.).This design facilitates the slide guide because the entire rotor diameter is available for this and can continue to be the guide and the seal consist of different, more suitable materials (the guide made of steel brass etc., the sealing strip made of Metell, plastics, ceramics, etc.).

Wärmedehnung, Vorzüge und Festigkeit werden besser beherrscht. Weiterhin besteht die Möglichkeit die Schieberhälften durch zusammennieten (schweißen, verstiften) von Platten so zu gestalten, daß eine Nut ohne Bearbeitung entsteht und auch Platz für die Laschen vorhanden ist.Thermal expansion, advantages and strength are better controlled. Farther there is the possibility of riveting the slide halves together (welding, pinning) to design of panels so that a groove is created without machining and also space for the tabs is available.

Es stellen dar: Abb. 1 - Schnitt Kompressor - Gehäusedurchmesser (Lamellenführung durch Federn) Abb. 2 - Schnitt Kompressor - Gehäusedurchmesser (Lamellenführung durch festverbundene Laschen) Abb. 3 - Schnitt A-8 Gehäuseschnitt - Kompressor Lamellen mit Führungslaschen in Seitenansicht Abb. 3 - Schnitt C-D Gehäuseschnitt - Kompressor Darstellung der Lamellenanordnung im Verhältnis zum GehäusedurchmessserIt shows: Fig. 1 - Compressor section - housing diameter (lamellar guide by springs) Fig. 2 - Compressor section - housing diameter (lamellar guide by firmly connected straps) Fig. 3 - Section A-8 Housing section - Compressor fins with guide tabs in side view Fig. 3 - Section C-D Housing section - Compressor Representation of the lamellar arrangement in relation to the housing diameter

Claims

Claims Rotary compressor with firmly connected slide halves 1) Rotary compressor (Fig. 3), the slide halves of which go through the center of the axis, characterized in that the two slide halves (1) by two or more Lugs (5) are firmly connected to each other.

2) Rotary compressor according to claim 1, characterized in that the slide halves (1) are provided with a groove (6) on the sealing edge.

3) rotary compressor according to claim 1 and 2, characterized in that that in the groove (6) a sealing strip (7), displaceable outwards, is inserted.

4) rotary compressor according to claim 1 to 3, characterized in that that the sealing strip (7) is pressed by springs (11) outwards to seal.

5) Rotary compressor according to claim 1 to 4, characterized in that that also on the end faces of the slide halves (1) in a groove a sealing strip (8) can be attached with leaf springs (12).

6) Rotary compressor according to claim 1 to 5, characterized in that that by stub axles (13) on both end faces, with a suitable diameter, the Stroke of the firmly connected slide halves (1) can be limited to a desired amount can.