DE1728317B

DE1728317B - Multi-stage piston compressor

Info

Publication number: DE1728317B
Authority: DE
Inventors: Auf Nichtnennung Antrag
Original assignee: Fa. Jos. L. Meyer, 4490 Papenburg

Description

einfache Ausgestaltung des Saug- und Druckraumes in seine dargestellte obere Totpunktlage schließen den im unteren Bereich des den Stufenteil des Kolbens Ventilschlitzen 20 zugeordnete Ventillamellen 21 die umgebenden Zylinders, eine verbesserte, den gesam- Verbindung des Zylinderratimes der ersten Druckten Stufenteil erfassende Kühlung und eine insgesamt stufe zum Teilringraum 17, während sich unter dem in axialer Richtung gedrungene Bauweise. Ferner ver- S Druck der verdichteten Luft die Lamellen 22 von den einfacht sich die Ventilanbringung und ein Ventilaus- ebenfalls konzentrisch zur Achse 5 verlaufenden Ventausch, da Einschleifarbeiten entfallen. tilschlitzen 23 des dem Ringteilraum 18 zugeordnetensimple design of the suction and pressure chamber in its upper dead center position shown close the in the lower region of the valve lamellae 21 associated with the stepped part of the piston valve slots 20 surrounding cylinder, an improved, the total connection of the cylinder rate of the first printed Step part capturing cooling and a total step to the partial annulus 17, while under the compact construction in the axial direction. Furthermore, the pressure of the compressed air compresses the lamellae 22 from the the valve attachment and a valve exchange, also concentric to axis 5, are simplified, since there is no need for grinding. tilschlitzen 23 of the annular sub-space 18 assigned

Ein Ausführungsbeispiel des Gegenstands der Er- Teils des Lamellenventils 13 abheben. Dementspre-One embodiment of the object of the Er part of the lamella valve 13 stand out. Accordingly

findung ist in der Zeichnung dargestellt, es zeigt chend tritt die in der ersten Stufe verdichtete Luft überFinding is shown in the drawing, it shows accordingly the air compressed in the first stage passes over

Fig. 1 eine schematische Darstellung eines drei- io die Ventilschlitze 23 in den Teilringraum 18 entsprestufigen Kolbenverdichters nach der Erfindung in chend Pfeil 24 über. Aus dem den Dnickraum für die1 shows a schematic representation of a three-way valve slits 23 in the partial annular space 18 Piston compressor according to the invention in chend arrow 24 above. From the the pressure room for the

einem axialen, abgebrochenen Mittelschnitt, erste Verdichtungsstufe bildenden Teilringraum 18an axial, broken central section, the first compression stage forming partial annular space 18

F ig. 2 eine Draufsicht auf das Lamellenventil kann die verdichtete Luft über eine Auslaßbohrung 25Fig. 2 shows a plan view of the reed valve, the compressed air can be passed through an outlet bore 25

nach Fig. 1. austreten, an die in üblicher Weise eine zum Saug-exit according to Fig. 1., to which in the usual way a suction

Der dargestellte Kolbenverdichter umfaßt zwei ko- 15 raum 26 für die zweite Verdichtungsstufe geführte axiale, in üblicher Weise zu Kühlzwecken gerippte Rohrleitung angeschlossen ist. Aus dem Saugraum 26 Zylinder 1 und 2, von denen der Zylinder 1 einen ab- für die zweite Verdichtungsstufe tritt die in erster gestuften, verringerten Zylinderraumquerschnitt be- Stufe verdichtete Luft entsprechend dem Pfeil 27 ungrenzt. Die Zylinderräume der Zylinder 1 und 2 ste- ter Passieren eines Rückschlagventils 28 in den Zylinhen untereinander in direkter Verbindung. Beiden Zy- 20 derraum 11 für die zweite Druckstufe über. Aus dem lindern 1,2 ist ein gemeinsamer, sowohl als Stufen-als Zylinderraum 11 für die zweite Verdichtungsstuf;. auch als Differenzkolben ausgebildeter Kolben 3 zu- wird die vorverdichtete Luft mittels des Kolbenteils 7 geordnet, welche von einem Pleuel 4 angetrieben eine unter Verdichtung in zweiter Stufe dem Druckraum Tangs der Verdichterachse 5 gegenläufige Hubbewe- 29 für die zweite Verdichtungsstufe entsprechend gung ausführt. Dem Zylinderraum des Zylinders 1 ist 25 Pfeil 30 zugeführt. Bei ihrem Austritt aus dem Zylinder abgesetzte Stufenteil 6 des Kolbens 3 zugeordnet. derraum 11 passiert die Luft dabei ein Rückschlag-Der Hauptteil des Kolbens 3 bildet einen Differenz- ventil 31. Der Druckraum 29 für die zweite Verdichkolben, dessen durchmessergrößerer Kolbenteil 7 mit tungsstufe ist über eine Rohrleitung an den Saugraum der Wandfläche 8 des Zylinders 2 zusammenwirkt. 32 im Zylinderkopf 16 angeschlossen. EntsprechendThe illustrated reciprocating compressor comprises two condensed chambers 26 for the second compression stage axial pipeline, ribbed in the usual way for cooling purposes, is connected. From the suction chamber 26 Cylinders 1 and 2, one of which is cylinder 1 - for the second compression stage which occurs in the first stepped, reduced cylinder space cross-section, compressed air stepped according to the arrow 27 unlimited. The cylinder spaces of cylinders 1 and 2 constantly pass through a check valve 28 in the cylinders in direct connection with each other. Both cylinder space 11 for the second pressure stage over. From the alleviate 1,2 is a common, both as a stage as a cylinder chamber 11 for the second compression stage. The pre-compressed air is also supplied as a differential piston 3 by means of the piston part 7 ordered, which is driven by a connecting rod 4, one under compression in the second stage of the pressure chamber Tangs of the compressor axis 5 counter-rotating stroke movements 29 for the second compression stage accordingly execution. 25 arrow 30 is fed to the cylinder space of cylinder 1. When it emerges from the cylinder assigned stepped part 6 of the piston 3. In the room 11, the air passes through a kickback The main part of the piston 3 forms a differential valve 31. The pressure chamber 29 for the second compression piston, whose larger diameter piston part 7 with processing stage is via a pipeline to the suction chamber the wall surface 8 of the cylinder 2 cooperates. 32 connected in the cylinder head 16. Accordingly

An den Kolbenteil 7 schließt sich ein abgesetzter, 30 dem Pfeil 33 tritt daher die in zweiter Stufe verdichim Durchmesser verringerter Mantelteil 9 an, welcher tete Luft in den Zylinderraum für die dritte Verdichmit der entsprechend abgesetzten Wandfläche 10 des tungsstufe während des Saughubes des Kolbens 3 Zylinders 2 zusammenwirkt. Der Mantelteil 9 des über, wobei die Luft ein Rückschlagventil 34 passiert. Kolbens 3 begrenzt mit der Wand 8 des Zylinders 2 In dem Zylinderraum für die dritte Verdichtungsstufe einen Ringspalt 11, welcher den Zylinderraum für die 35 wird die Luft dann auf Enddruck verdichtet und tritt zweite Verdichtungsstufe bildet. Der Zylinderraum entsprechend Pfeil 35 unter Passieren eines Rückfür die erste Verdichtungsstufe wird von der ringför- schlagventils 36 in den Druckraum 37 für die Endmigen Stirnfläche 12 des Kolbenteils 7, der Zylinder- stufe, die dritte Verdichrungsstufe, über. Die Luftwand 8 des Zylinders 2 und einem ringförmigen La- übergänge von den jeweiligen Saugräumen in die Zymellenventil 13 begrenzt, auf das weiter unten noch 40 linderräume und weiter von diesen in die Druckräume eingegangen wird. Der Zylinderraum für die dritte der jeweiligen Stufen und der Übergang der stufen-Verdichtungsstufe wird von der Stirnfläche 14 des weise verdichteten Luft von der ersten bis zur dritten Stufenkolbenteils 6, der Wandung 15 des Zylinders 1 Verdichtungsstufe laufen während des Arbeitens des und einem den Zylinder 1 stirnseitig abschließenden Verdichters nebeneinander ab.
Zylinderkopf 16 begrenzt. 45 Das in F i g. 2 in Draufsicht veranschaulichte La-The piston part 7 is followed by a stepped jacket part 9, which is reduced in diameter in the second stage and which has a reduced diameter in the second stage, which releases air into the cylinder space for the third compression stage during the suction stroke of the piston 3 cylinder 2 cooperates. The jacket part 9 of the over, the air passing through a check valve 34. Piston 3 bounded by wall 8 of cylinder 2 In the cylinder space for the third compression stage, an annular gap 11, which forms the cylinder space for the air is then compressed to final pressure and enters the second compression stage. The cylinder space according to arrow 35, passing a return for the first compression stage, is transferred from the ring feeder valve 36 into the pressure space 37 for the final face 12 of the piston part 7, the cylinder stage, the third compression stage. The air wall 8 of the cylinder 2 and a ring-shaped transition from the respective suction chambers to the cylinder valve 13 are bounded, further below 40 control chambers and further from these into the pressure chambers. The cylinder space for the third of the respective stages and the transition of the stage compression stage is run by the end face 14 of the compressed air from the first to the third stage piston part 6, the wall 15 of the cylinder 1 compression stage while the cylinder 1 is working and one of the cylinder 1 front side closing compressor next to each other.
Cylinder head 16 limited. 45 The in F i g. 2 illustrated in plan view

Der untere Bereich des Zylinders 1 bildet einen mellenventil 13, welches den Zylinderraum für die er-The lower area of the cylinder 1 forms a butterfly valve 13, which forms the cylinder space for the

Ringraum, welcher durch eine Trennwand 38 in zwei ste Stufe vom Saug- und Druckraum 17, 18 für dieseAnnular space, which through a partition 38 in two ste stage from the suction and pressure chamber 17, 18 for this

Teilringräume 17, 18 unterteilt ist. Diese Trennwand Stufe abschließt, ist bei dem dargestellten Ausfüh-Partial annular spaces 17, 18 is divided. This partition wall level completes, is in the illustrated embodiment

38 ist in F i g. 2 dargestellt. rungsbeispiel in zwei Bereiche unterteilt, von denen38 is shown in FIG. 2 shown. example divided into two areas, of which

Die Teilringräume 17, 18 bilden den Saug- und 50 der in der Zeichnung rechte Bereich entsprechend sei-The partial annular spaces 17, 18 form the suction area and 50 the area on the right in the drawing corresponding to its

Druckraum für die erste Verdichtungsstufe, wobei der ner Zuordnung zum Teilringraum 17 als SaugventilPressure chamber for the first compression stage, the ner assignment to the partial annulus 17 as a suction valve

Teilringraum 17 den Saugraum und der Teilringraum und der in der Zeichnung linke Teil entsprechend sei-Sub-annulus 17 the suction chamber and the sub-annulus and the part on the left in the drawing is accordingly

18 den Druckraum bildet. In den Teilringraum 17 ner Zuordnung zum Teilringraum 18 als Druckventil18 forms the pressure chamber. In the partial annulus 17 ner assignment to the partial annulus 18 as a pressure valve

strömt zu verdichtende Luft entsprechend dem Pfeil ausgestaltet ist. Beide Bereiche sind untereinanderflows air to be compressed is designed according to the arrow. Both areas are with each other

18 bei Saughub des Kolbens 3 über eine Einlaßboh- 55 durch einen sich radial erstreckenden neutralen Be-18 during the suction stroke of the piston 3 via an inlet hole 55 through a radially extending neutral

rung 19 ein. Der Saughub des Kolbens 3 beginnt mit reich unterteilt, der unterhalb der Trennwand 38 destion 19 a. The suction stroke of the piston 3 begins with richly divided, which is below the partition 38 of the

dessen Bewegung aus seiner dargestellten oberen Tot- Ringraumes 17, 18 für die erste Verdichtungsstufe ge-its movement from its illustrated upper dead annular space 17, 18 for the first compression stage

punktstellung in seine nicht näher veranschaulichte legen ist. Bei 39 sind axiale Schraubenbolzen veran-point position is put in its not illustrated in detail. Axial screw bolts are located at 39

untere Totpunktstellung. Die während des Saughubes schaulicht, welche die Zylinder 1 und 2 untereinanderlower dead center position. The during the suction stroke shows which cylinders 1 and 2 are connected to each other

durch die Bohrung 19 in den Teilringraum 17 eintre- 60 unter Zwischenlage des Lamellenventils 13 verbin-through the bore 19 into the partial annulus 17 enter 60 with the interposition of the lamellar valve 13 connected.

tende Luft tritt über konzentrisch zur Achse 5 verlau- den. Bei 40 sind im neutralen Bereich des Lamellen-Tending air flows concentrically to axis 5. At 40, in the neutral area of the lamellae

fende Ventilschlitze 20 in den Zylinderraum für die ventils angeordnete Schrauben od. dgl. wiedergege-Fende valve slots 20 in the cylinder space for the valve arranged screws or the like.

erste Verdichtungsstufe oberhalb der Kolbenstrom- ben, welche das aus dem geschützen Ventilhauptkör-first compression stage above the piston flow, which produces the valve main body

fläche 12 über. per 41 und den Lamellen 21, 22 bestehende Ventil 13area 12 over. valve 13 via 41 and the lamellae 21, 22

Bei Beginn des Verdichtungshubes des Kolbens 3 65 zu einer Baueinheit vereinigen.At the beginning of the compression stroke of the piston 3 65 combine into one structural unit.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

formed by the housings of the attached valves. Claims: In a single-stage, double-acting piston compressor, the cylinder covers have a plurality

1. Multi-stage reciprocating compressor with one in of inlet and a plurality of outlet valves in two coaxially adjoining cylinders 5 provided with an axial arrangement, which are displaceable on a circular axis Stepped piston and one of the rings are arranged around the cylinder axis. Also at The end face of the main piston part for the first part of such a valve design and arrangement is a Denser stage axially opposite suction and considerable harmful space available, as the single-pressure valve arrangement with in the lower area of the release valve on the inside of the cylinder cover Step part of the piston surrounding the cylinder are ordered io and force the dead center position unordered Suction and pressure chamber, in contrast to the piston, not insignificantly into the cylinder marked that the suction space is moved back. As a result of the arrangement of the and pressure chamber of partial annulus chambers (17, 18) exhaust valves on the outside of the cylinder cover one subdivided by radial partition walls (38), these also have through bores, the ih-annular space is formed, which on its the ring 15 on the other side increase the harmful space. The for end face (12) of the main piston part (7) pulls reduction in the individual dimensions of the valves facing side of the cylinder chamber of the first multi-valve arrangement provided here sealing stage a ring-shaped lamella also results in a not inconsiderable structural valve (13) is subdivided, which corresponds to the additional effort required.

division of the annular space into partial annular spaces radially 20 Furthermore, a single-stage piston compressor is leg a suction and a pressure valve area are unknown, in which the cylinder space is divided by a valve seat and from the step part (6) of the piston coaxial opposite plate on which a cylinder head with is penetrated. a central pressure room and one on one

2. Piston compressor according to claim 1, characterized by a circular arc section around it at a distance, that the lamellar valve (13) is arranged in both 25 stretching suction spaces. Also one On the one hand, however, a radial configuration of this type below the partition (38) requires an elevated position The annular space located, closed middle - damaging space, which channels concentrically running valve slots from the passage area in the valve seat plate below the outlet (20, 23). valve and one in the one attached to the valve seat plate

3. Piston compressor according to claim 1, characterized in that the partial annular spaces (17, 18) compose extension of the cylinder space into which one of the cylinder (2) of the first compression the plate-shaped valve member of the inlet valve with a step in diameter corresponding radial engages its outer area.
Have transition opening. The invention has for its object to be a

35 multi-stage piston compressors of the type mentioned at the beginning

7U create whose valves in the first stage below

Reduction of the harmful space of the suction volume can be adapted well to a good one

The invention relates to ensuring a multi-level filling level. To solve this piston compressor with one in two coaxially adjacent 40, the piston compressor according to the invention is more bordering on it. Cylinders displaceable Stufenkol- characterized in that the suction and pressure chamber ben and one of the ring face of the main piston of partial ring spaces one by radial partitions is formed partly for the first compressor stage axially opposite subdivided annular space, which on its the Lowing suction and pressure valve arrangement with in the lower ring face of the piston main part facing ren area of the side of the cylinder space of the first compression stage surrounding the step part of the piston the cylinder arranged suction and pressure chamber. is separated by a ring-shaped lamella valve,

In a known reciprocating compressor of this type, according to the subdivision of the annular space into comprises the annular end face of the piston main part partial annular spaces radially into a suction and a pressure for the first compressor stage is divided axially opposite valve area and from the stage part of the KoI suction and pressure valve arrangement conventional single 50 is coaxially penetrated. The lamellar valve control valves, from their training and arrangement one can also be on both sides of a radial, below The result is a considerable dead space, which is the filling of the dividing wall of the annular space, closed degree in the first central area, through which the largest volume of air penetrates, concentric vents Reduced level of the piston thickener. This have tilschlitze. Furthermore, the sub-annulus spaces is due to the fact that the valves with regard to 55 one of the cylinder of the first compression stage in radial transition openings corresponding to the flow limit conditions to be observed for diameter the air volume to be enforced is proportionate to the voltage.

must present large clear flow cross-sections, the stage compressor according to the invention provides

for a considerable reduction in the harmful space with an axial valve arrangement and the usual study the piston main part for the first 60 in the first stage and thus represents a good charge-compressor stage axially opposite ring spur safely. The lamellar valve offers the possibility of doing this in terms of dimensions is not sufficient. For the sake of convenience, the valve passage cross-sections are large nor the required inlet and outlet cross-sections, air throughput volume in the first stage, too to ensure and to be able to adapt the assembly of the individual valves to large step ratios without enable, the cylinder space for the first stage 65 is bevels or extensions of the cylinder Piston compressor with one of the damaging derraumes. The never-space in the axial direction provided enlarging bevel. The third height of the at the same time an easily exchangeable The suction and pressure space for the first stage is a structural unit-forming valve enables a structurally