EP1517038A2 - Compressor sealing system - Google Patents

Abstract

A metal support seal (3), coated with elastomer and/or adhesive, completely surrounds the suction lamella plate (1) in a radial direction, or is connected to it forming a composite plate seal. One surface surrounds the cylinder and any connection bores provided, making planar contact under pressure with the cylinder block and valve plate sealing surfaces.

Description

The invention relates to an arrangement for sealing in the region between the cylinder block and the valve plate of a compressor, preferably a CO ₂ compressor for the air conditioning system of a motor vehicle, wherein between the cylinder block and the valve plate, a Sauglamellenplatine is arranged, the suction valves formed in the cylinder block associated displacement chambers includes.

Compressors, with seals in the area between the cylinder block and the Valve plate exist in a variety of embodiments.

The state of the art is exemplified by the following publications:
DE 196 11 004 A1, DE 44 41 721 C2, JP 2002070739 and DE 199 62 121 A1.

As a rule, these are compressors with cylinder block and valve plate, in which between the cylinder block and the valve plate (valve seat plate for both suction louvers and pressure fins) a thin suction lamella plate is arranged, which associated with the cylinders formed in the cylinder block chambers Includes (suction) valves.

Compressors of the type referred to comprise a housing which is one of outside powered compressor unit. The example formed as axial piston pump unit again comprises at least a piston which is reciprocable in a cylinder block. Usually Such a compressor is equipped with several pistons, which at Rotation of a swash plate or swash plate in the direction of its longitudinal axis and to be moved.

For example, reference is made to DE 44 41 721 A1 and DE 196 11 004 A1. According to DE 44 41 721 A1, the compressor comprises one on a drive shaft supported swash plate to perform a uniform rotational movement. The Swash plate is movable with a variety of in a cylinder block back and forth Coupled piston, wherein the cylinder / piston assembly for compression a refrigerant gas is used. The pistons can also be double-acting Pistons act.

Between the working chambers of the cylinder and the valve plate is a Sauglamellenplatine with integrated valves (suction lamellae) without special sealing measures arranged. Rather, according to the prior art due to the at Assembly produced surface pressure sealed. On the other hand, it is also the Use of simple gaskets (such as metal gaskets or metal carrier gaskets) between Sauglamellenplatine and cylinder block known e.g. optional with a thin elastomeric coating are provided to increase the sealing effect. In no case between Sauglamellenplatine and valve seat plate with a sealed seal, as the Sauglamellenplatine to the valve plate must lie in order to fulfill different functions (sealing completion of the Suction hole, defined stop - e.g. for reasons of strength for warranty a long life).

Other known seals for the area between the cylinder block and Sauglamelle are realized through the use of O-rings. In principle, this form the seal against the application shown in the cited documents conceivable in all areas of the compressor. For example, is often going to the atmosphere, i.e. to the outside, between the components conventionally sealed with O-rings, But there are also solutions with flat gaskets.

The seals described above refer to the refrigerant R134a, which state of the art is.

In the context of future compressors, CO _{2 will be used} as a refrigerant. At the very high operating pressures occurring there, the metallic sealing surface can open, which leads to leaks, especially to internal leaks. This then leads to a loss of power of the compressor. It can be assumed that this behavior will also occur with conventional gaskets (metal gaskets or metal carrier gaskets). Conventional O-rings can not be used in most areas of an air conditioning compressor for CO ₂ application due to various technical issues (explosive decompression, very high or very low temperature problems, etc.).

Applicant's JP 2002 070739 proposes a compressor for the use of the refrigerant CO ₂ . Described is a seal arrangement between Sauglamellenplatine and cylinder block, whereby the leakage between these two components is prevented. Preferably, a metal carrier seal is used here, which has an elastomer coating and in certain areas, for example the cylinder bores in the cylinder block surrounding area, to increase the sealing effect provides sealing beads, which are introduced by forming in the metal carrier seal. Such seals are known from other fields of mechanical engineering.

A similar seal is also described in DE 199 62 121 A1. The order is configured such that between the cylinder block and the Sauglamellenplatine a flat sealing body is arranged and that the sealing body for Board towards a ring around the respective cylinder space extending survey or thickening. This sealing body has the Sauglamellenplatine out circular around the respective cylinder space extending elevation, thickening or the like. The proposed survey or the like is for Board and thus also formed to the valve plate and should during assembly cause its local increase in surface pressure.

Contrary to the usual procedure, namely between the sealed Components - ie between the Sauglamellenplatine and the valve plate - a Sealing by surface pressure, plus an outer seal by means of O-ring, provide, you have here the sealing measure between the cylinder block and the board, i. facing away from the valve plate provided.

The thus achieved increase in surface pressure seals primarily between Cylinder block and valve plate on the other hand may also be a light Improvement achieved between Sauglamellenplatine and valve plate. At long last Here, the effect should be used, after which the increased surface pressure may also through the thin Sauglamellenplatine through on the contact surface of suction plate and valve plate transmits.

The problem with this solution is essentially that the area between Suction plate and the valve plate is not sealed in the same quality, like the area between suction plate and cylinder block. In fact, can the bead with an elastic recovery behavior also increased surface pressure provide on the opposite side of the board, but here is the Sauglamellenplatine to match the seal, i. she needs very small thickness have to be. Typical thicknesses for suction lamellae are e.g. in the range 0.2 to 0.35 mm. The quality of the seal will also be on both sides of the Significantly different suction plate.

In Fig. 1, a possible voltage curve in such a seal is qualitative shown: While in the working plane of the metal carrier seal a strong increase in voltage is achieved (2), there is a significant attenuation / flattening the profile on the top of the suction plate (depending on the thickness of the Sauglamellenblechs and configuration of the bead). Especially in the shortest connection between cylinder bores, the intermediate webs in the cylinder block, the Pressing provided by the bead in the area between the valve plate and the Sauglamellenplatine have no influence, as a result of the compression forces the deformations of the components (lifting the valve plate) in this area are particularly high and the housing clamping by the screwing, e.g. more effective outdoors.

• Bohrung für die Gasführung vom Triebwerksraum zur Saugkammer des Verdichters (für die Regelung);
• Bohrung für die Gasführung von der Hochdruckseite zum Triebwerksraum des Verdichters (für die Regelung);
• Bohrungen, um z.B. im Bereich des Zylinderkopfes vom Druckgas abgeschiedenes Öl in den Kurbelraum zurückzuführen (Ölrückführung).

It is therefore inconsequential to provide such a high-quality seal in the area of the suction lamella plate and the cylinder block, but to permit energetically harmful leakage currents in the area between the suction lamella plate and the valve plate. Furthermore, various connection bores, which typically penetrate the valve plate, the suction plate and the cylinder block, are not sealed in an equivalent manner. For these holes on the one hand, the gap between the valve plate and Sauglamellenplatine must be sealed, on the other hand, the gap between the cylinder block and the Sauglamellenplatine must be gas-tight. Usually these are the following holes or openings:

• Bore for the gas supply from the engine room to the suction chamber of the compressor (for the control);
• Bore for the gas supply from the high pressure side to the engine room of the compressor (for the control);
• Holes, for example in the area of the cylinder head of the compressed gas separated oil in the crankcase due (oil return).

Both in the area of the cylinder bores as well as in the area of the mentioned holes for communicating pressure levels or oil separation these must Breakthroughs, especially against each other sealed. Farther But these breakthroughs must also be an excellent seal against the Atmosphere.

As already mentioned, another problem is the sealing of the Gap between valve plate and Sauglamellenplatine. In principle, could through Inserting another similar metal carrier seal the area sufficient be sealed. The problem here is, however, that in addition to the effort, which requires a further component, the valve seat of the Sauglamellenplatine The valve plate would be severely compromised, leaving one with significant malfunction would have to count. The Sauglamellenplatine must be as level as possible, smooth contact surface on the valve plate and outside the cylinder bores be firmly clamped between the components. By introducing another Metal carrier gasket would make the suction lamella plate almost from the valve plate surface so that their function (e.g., avoidance of Leakage) would no longer be ensured. In addition, dead space would also arise since each "sheet metal layer" separates the piston from the valve plate.

The invention is based essentially on the two last-mentioned patents relating to the prior art (CO ₂ compressors). Reference will also be made to the usual metal carrier gaskets modified with corresponding gaskets and corresponding coatings, particularly elastomeric coatings. However, the different designs in this area are not the subject of this invention.

It is an object of the invention to provide a simple and inexpensive arrangement for. Seal in the area between the cylinder block and the valve plate of a compressor, especially a CO ₂ compressor to specify, with the internal leakage and thus attributable to internal leaks power losses of the compressor are at least largely avoided.

This object is achieved by a sealing arrangement with the features of the claim 1. Expedient developments of the inventive concept are the subject the dependent claims.

The invention includes in a first aspect the essential idea, that the e.g. Elastomer-coated metal carrier seal directly between valve plate and cylinder block seals without the effect (sealing effect, function etc.) is influenced or attenuated by the Sauglamellenplatine. proposed is a sealing system between valve plate and suction valve and a seal between cylinder block and valve plate of an axial piston compressor to to reduce the leakage currents. The sealing system can be in the valve plate or integrated into the suction lamella board or as a curing during the assembly process or crosslinking sealing system on the interfaces on the Sauglamellenplatine be applied. It is also proposed Sauglamellenplatine and metal support gasket to unite a component and all sealing functions essentially integrate into this.

With the invention, the performance and efficiency of axial piston compressors, especially of CO ₂ compressors, as used in vehicles, significantly increased.

The internal leakage, e.g. between the valve plate and the suction plate is thereby that reduces a sealing system in valve plate and / or suction plate (Suction valve) integrated or incorporated or a sealing material or adhesive / sealant during the assembly process is applied to the sealing surfaces. These Seal provides e.g. a seal of the cylinder bores to each other and the seal safe from tax holes. As a result, the seal is advantageously without additional sealing elements (e.g., a flat gasket, o-rings or another metal bead seal). These would increase the assembly costs and possibly extend the dead space of the compressor, which is negative would affect the performance of the compressor. The seal to the atmosphere can according to the prior art with metal bead seals or O-rings.

The sealing effect is achieved according to the first aspect of the invention, that on the suction lamellae board or on the valve plate a soft material, e.g. an elastomer or soft metal, e.g. Tin or copper, applied becomes. This soft material can then bumps, which in the macro and Micro range, e.g. caused by the machining of the parts, compensate and ensure a good tightness. The soft material can either large area or even partially on the interfaces as a sealing layer be applied.

The layer which produces the sealing effect can have any desired thickness. The goal, however, is to make the layer thin in order to simplify the application process design and reduce material consumption. Further, with a thin Density layer of the dead space is not extended, indicating high performance the compressor is important.

As a further variant, a partial or surface bonding of the components is proposed. The application of the adhesive can be integrated into the assembly process be. The parts can be made with a hardening or cross-linking adhesive or else only be provided with a pasty sealing material. The sealing system is applied directly in the area of the sealing surface and reacts there too (curing, networking). The use of reaction sealing systems, such as. Polyurethane foam systems, preferred. The used Sealing system, which is applied during assembly, can be in liquid but also be applied in thixotropic form.

When gluing, the parts to be joined and sealed can be at the same time be positioned. This allows positioning pins and the corresponding Drilling is eliminated, resulting in an additional significant simplification represents the manufacturing process.

The proposed according to the second aspect of the invention novel component, This includes the function of the suction plate and the metal bead seal, inclusive All sealing functions, integrated, also provide the complete seal to the cylinder block as to the valve plate, but also towards the environment, for sure. The number of This reduces sealing points, reduces the number of parts as well as the design the sealing surfaces and acreage simplified. The integration of the seal has a significant cost advantage, since in the best case no further component needed becomes. Thus, the achieved energy gain compared to low costs. Furthermore, the pads can be made simpler. So can e.g. Bags for receiving sealing elements or for receiving the Saugventillammelle account for the Zylinderblockflanschfläche, which is a significant simplification represents the manufacturing process. For the sealing of the individual cylinder chambers, the control bores and for the external sealing of the compressor its environment, in turn, no further seals are necessary.

Alternatively, the proposed sealing system in the cylinder block or Pressure lamella board and all other internal and possibly external sealing points use.

In addition to the elastomer or soft metal coating, one or more Bead (s) which surrounds the areas to be sealed (enclose) attached be. These can / can be combined with or without elastomer or Soft metal coating be introduced into the Sauglamellenplatine. The or each Beading leads to a local increase in pressing pressures. This will cause the leakage currents prevented. It is specifically suggested that around the cylinder bores and control bores are introduced beads, which is a local pressure increase and increasing the pressure generated. On an additional accurate positioning the suction plate on the valve plate, e.g. through positioning pins, can be omitted, as the Sauglamellenplatine on the positioning pins is clearly defined in position in the housing.

All proposed sealing options can be used individually and in combination are used and claimed individually and in combination.

• Dadurch, dass zwischen der Sauglamellenplatine und dem Zylinderblock keine Metallträgerdichtung liegt, kann die Kante des Zylinderblocks, über den die Sauglamelle infolge Ventilöffnung gebogen wird, leicht dem Biegeverlauf der Lamelle angepasst werden, was sich vorteilhaft bzgl. der Lebensdauer äußert.
• Aus dem gleichen Grund kann die (optionale) Sicke auch sehr nah an die Außenkontur der Zylinderbohrung geführt werden, was den Schadraum und die Deformation der Ventilplatte leicht verringert.
• Bei der Ausführung, wo Metallträgerdichtung und Sauglamelle ineinander liegen, wird geringfügig die Verdichterbaulänge verringert.
• Durch Ineinanderlegen von Metallträgerdichtung und Sauglamellenplatine wird die Höhe des schädlichen Raumes verringert. Prinzipiell kann der Kolben zwar zumindest teilweise in diesen Bereich hineingeführt werden, praktisch ergibt sich aber durch mehr Bauteile (und Toleranzen) in diesem Bereich ein größerer schädlicher Raum.

Further advantages of the invention in its abovementioned variants or of suitable execution thereof are the following:

• Characterized in that there is no metal carrier seal between the Sauglamellenplatine and the cylinder block, the edge of the cylinder block over which the suction plate is bent due to valve opening, easily be adapted to the bending curve of the blade, which manifests itself advantageous in terms of life.
• For the same reason, the (optional) bead can also be guided very close to the outer contour of the cylinder bore, which slightly reduces the dead space and the deformation of the valve plate.
• In the version where the metal carrier seal and the suction lamella are intertwined, the compactor length is slightly reduced.
• By interleaving the metal carrier seal and the suction lamella plate, the height of the harmful space is reduced. In principle, although the piston can be guided into this area at least partially, practically more components (and tolerances) in this area result in a larger, damaging space.

In an embodiment of the invention, the Sauglamellenplatine is directly in the Metal carrier gasket fitted, so it is quasi axially on a same level like the metal carrier gasket. Because they are the same within close tolerances Height as the metal carrier seal, and both parts are very thin-walled, It is easily possible, both parts even at low height differences so in To compress the compressor components valve plate and cylinder block that the respective Functions are sufficiently ensured.

Fig. 1

eine grafische Darstellung des Spannungsverlaufes in einer herkömmlichen Dichtanordnung,

Fig. 2

als Ausführungsbeispiel der Erfindung eine Dichtanordnung mit einer die Sauglamellenplatine umschließenden Metallträgerdichtung (in Draufsicht),

Fig. 3A und 3B

eine Draufsicht des Zylinderblocks bzw. eine ausschnittweise Querschnittsdarstellung der zugehörigen Dichtanordnung bei der Ausführungsform nach Fig. 2,

Fig. 4A und 4B

Ventilplatte und zugehörigen Druckventilstop bei dieser Ausführungsform, in Draufsicht,

Fig. 5

die Dichtanordnung aus Fig. 2 im montierten Zustand, in Draufsicht,

Fig. 6

ein Platinen-Dichtungs-Verbundteil einer Dichtanordnung gemäß einer weiteren Ausführungsform der Erfindung,

Fig. 7

ein gegenüber der Ausführung nach Fig. 6 modifiziertes Platinen-Dichtungs-Verbundteil gemäß einer noch anderen Ausführungsform der Erfindung und

Fig. 8A und 8B

schematische Querschnittsdarstellungen von bei der Ausführungsform nach Fig. 7 verwendbaren Sicken-Konfigurationen.

The advantages and expediencies of the invention will become apparent from the dependent claims and the following description of exemplary embodiments with reference to the figures. From these show:

Fig. 1

a graphical representation of the voltage curve in a conventional sealing arrangement,

Fig. 2

as an embodiment of the invention, a sealing arrangement with a Sauglamellenplatine enclosing metal carrier seal (in plan view),

FIGS. 3A and 3B

a top view of the cylinder block and a fragmentary cross-sectional view of the associated sealing arrangement in the embodiment of FIG. 2,

FIGS. 4A and 4B

Valve plate and associated pressure valve stop in this embodiment, in plan view,

Fig. 5

2 in the assembled state, in plan view,

Fig. 6

a board-sealing composite part of a sealing arrangement according to another embodiment of the invention,

Fig. 7

a comparison with the embodiment of FIG. 6 modified board-seal composite part according to yet another embodiment of the invention and

Figs. 8A and 8B

schematic cross-sectional views of usable in the embodiment of Fig. 7 bead configurations.

In Fig. 2, a Sauglamellenplatine 1 is shown, of the metal carrier seal 3 is enclosed outside. The Sauglamellenplatine here has seven suction lamellae 5, but in principle may have any number of suction lamellae. In this Embodiment are the suction lamellae 5, the Saugventilstopp stops 5a at the free end, each pierced to the gas passage of the Allow compressed gas, and extend radially from the center axis A of the Compressor to the outside.

Recesses 7 of the metal carrier seal 3, with respect to the intermediate webs 9 to the Grasping suction lamellae of Sauglamellenplatine, resulting in approximately equidistant the contour of the Saugventilstopps the cylinder bore (partial) and follow each almost the contours of the suction blades (as well as the contour of the cylinder bore) up to a central area. At the radially outer end are recesses 7a provided for the Saugventilstopps. Again equidistant behind the Contour of the recesses 7 is reset a metal bead 11 in the metal carrier seal imprinted. The illustrated preferred embodiment has another Beading 13 at a small distance from the outer edge of the component to the sealing effect to increase the atmosphere.

Fig. 3A shows an associated cylinder block 15 in the plan view. It is the radial orientation of the Sauglamellenanschlags 5a shown as the approximately sickle-shaped Contour that follows the contour of cylinder bores 17. The Sauglamellenanschlägen 5a diametrically opposite, is on the circumference of the cylinder bores 17 in the other one each incorporated in the surface of the cylinder head Immersion area 5b provided for the Sauglamelle. Furthermore, in Fig. 3A shows a central bore 19 and a circumferential groove 21, e.g. to insert a optional O-ring for (additional) sealing to the outside.

3B shows a longitudinal section through the overall arrangement of cylinder head, Sauglamellenplatine, valve plate and the end of a pressure plate along the section line A-A in Fig. 3A. Here are schematic - in the manner of a synoptic Representation - the positions of a Sauglamelle 5 when pushing out the gas (solid line) or when sucking (shown as a dotted bend line 7 ') and a pressure plate 23 during suction (shown hatched) or at Sending (dashed lines and designated by numeral 23 ') shown. The Valve plate is designated by numeral 25, and in this is a Saugventilbohrung 27 and a pressure valve bore 29 to recognize. Incidentally, it can be seen in FIG. 3B that the metal carrier seal 3 (Fig. 2, right side) in the same height with the Sauglamellenplatine 1 is located.

For completeness, in Fig. 4A and 4B, the valve plate 25 and a Pressure plate 31 is shown in plan view. In this embodiment (Fig. 4B) is also the arrangement of the pressure plates 23 of the pressure plate 31 extending radially from the inside to the outside. A center hole 33 of the pressure plate 31 is used for their screwing. Otherwise, in the figures 3A and 4A provided on the periphery of each holes for screwing omitted the components in the interest of clarity of representations. In Fig. A it can be seen that the pressure valve bores 29 a valve seat groove and a chamfer (not separately designated) have.

In this case, therefore, recesses or holes in the Sauglamellenplatine required because the suction louvers and pressure lamellae on both sides of the Valve plate, so to speak, one above the other. But it should be stressed that this is only an embodiment and in principle quite different arrangements also possible are.

In Fig. 5 is shown how the Sauglamellenplatine 1 (axially at the same level lying) in the metal carrier seal 3 is fitted. Here, the entire board, suitably positioned (e.g., by 2 pins), defined on the adjacent components.

An alternative embodiment provides that the two shown in Figure 2 Parts are an integral part, but of course in this configuration areas to be coated and non-coated are increased Production costs would result.

Another alternative is to single in an outer metal carrier seal Fit suction lamellae. This eliminates the small comparatively worse sealed area through which the suction lamellae led the Sauglamellenplatine become. In this case, instead of the Sauglamellenplatine 7 individual Sauglamellen to assemble.

Moreover, it is preferred that in the region of the compressor center axis a stronger central gland is provided by the appropriate tension in In this area, the small, not by the bead-sealed area, in addition applied.

FIGS. 6 and 7 each show a board-seal composite part 100 and 100 ', respectively the o.g. first aspect of the invention is used instead of the usual formed as separate parts components valve plate and Sauglamellenplatine (or "suction valve"). While in the first embodiment shown in FIG Composite before assembling a Sauglamellenplatine or a Suction valve 101 and a valve plate 103 with substantially conventional Configuration at their contact surface over the entire surface - in the mounted state not visible - sealing or adhesive layer applied as sole sealant 7 are around the suction fins 105 in the composite part 100 'of FIG Metal beads 107, around an additional connecting hole 109 around a metal bead 111 and around the outer edge of the Sauglamellenplatine around another bead 113 provided as additional sealing means. It can also have multiple connection holes 109 be present whose seal is useful.

FIGS. 8A and 8B show possible embodiments in schematic cross-sectional views mentioned beads, these figures are self-explanatory and do not require further explanation.

A compressor, in which a sealing arrangement of the type described above is used, is characterized in a first advantageous embodiment of the invention in that a piston of the compressor is designed such that its top in the top dead center in the height range of the Sauglamellenplatine and metal carrier seal or the circuit board Seal composite part lies. In a further advantageous embodiment, it is designed for operation with a refrigerant, in particular CO ₂ . Another expedient embodiment of the compressor is characterized by a compression of the sealing arrangement between the cylinder block and valve plate ensuring screwing in the peripheral region, wherein the number of screws by the number of cylinders or twice the number of cylinders is fixed, and / or a central screw with a screw in the center axis or more screws near the center axis. Incidentally, it should be noted that the proposed seal configurations are also suitable for a "screwless" design, in which the compressor can be closed or also welded, for example, by means of a cover screw connection.

The embodiment of the invention is not limited to the embodiments described above and highlighted aspects, but also in a variety of ways of modifications - in particular combinations of the characteristics of individual Exemplary embodiments - possible.

Claims (12)

Sealing arrangement of a compressor, for sealing the area between cylinder block and valve plate, where a Sauglamellenplatine is provided,
marked by
an at least partially coated with an elastomer and / or adhesive metal carrier seal which surrounds the Sauglamellenplatine in the radial direction substantially completely or is formed together with this as a sinker-seal composite part and their surface at least one cylinder and optionally provided connection holes around in surface pressure -Contact with a cylinder block sealing surface and the other surface in these areas in surface pressure contact with a valve plate sealing surface is. Sealing arrangement according to claim 1,
characterized in that
the metal carrier seal surrounds the Sauglamellenplatine in the plane thereof and has substantially the same height as this. Sealing arrangement according to claim 1 or 2,
characterized in that
The metal carrier seal with a kind of finger engages in the Sauglamellenplatine and the suction lamellae also encloses laterally. Sealing arrangement according to one of the preceding claims,
characterized in that
the metal support gasket or the board-seal composite part near the outer periphery sealing means, in particular a circumferential bead, for sealing against the atmosphere. Sealing arrangement according to one of claims 1 to 3,
characterized in that
near the outer periphery of the valve plate, a separate O-ring for improved sealing against the atmosphere is placed on the metal support gasket or the board-seal composite part. Sealing arrangement according to one of the preceding claims,
characterized in that
the metal carrier seal or the board-sealing composite part has at least a part of the cylinder or connecting holes surrounding sealing means, in particular beads, for sealing these cylinder or connecting holes against each other. Sealing arrangement according to one of the preceding claims, characterized by
additional screwing of the metal carrier gasket or the blanket seal composite in the central area. Sealing arrangement of a compressor, for sealing the area between cylinder block and valve plate, where a Sauglamellenplatine is provided,
characterized in that
the surface of the valve plate facing the suction lamella plate has an elastomer and / or adhesive coating around at least cylinder and selectively provided connection bores which is in surface pressure contact with the adjacent surface portions of the suction lamination plate. Sealing arrangement according to claim 8,
characterized in that
the elastomer and / or adhesive coating for sealing the cylinder or connecting holes against each other and against the atmosphere is formed. Compressor with a sealing arrangement according to one of the preceding claims,
characterized in that
a piston of the compressor is formed such that its upper side is at the top dead center in the height range of the Sauglamellenplatine and metal carrier seal or the sinker-seal composite part. Compressor with a sealing arrangement according to one of the preceding claims,
marked by
the training for operation with a refrigerant, in particular CO ₂ . Compressor with a sealing arrangement according to one of the preceding claims,
marked by
a compression of the sealing arrangement between the cylinder block and valve plate ensuring screwing in the peripheral region, wherein the number of screws by the number of cylinders or twice the number of cylinders is fixed, and / or a central screw with a screw in the center axis or more screws near the mid-axis.

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