EP0980977A2 - Kolben für einen Kolbenverdichter - Google Patents
Kolben für einen Kolbenverdichter Download PDFInfo
- Publication number
- EP0980977A2 EP0980977A2 EP99116360A EP99116360A EP0980977A2 EP 0980977 A2 EP0980977 A2 EP 0980977A2 EP 99116360 A EP99116360 A EP 99116360A EP 99116360 A EP99116360 A EP 99116360A EP 0980977 A2 EP0980977 A2 EP 0980977A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- support ring
- piston head
- ring
- head
- 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.)
- Withdrawn
Links
Images
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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0016—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons with valve arranged in the piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0469—Other heavy metals
- F05C2201/0475—Copper or alloys thereof
Definitions
- the present invention relates to a piston for piston compressors for gaseous media with one inside a cylinder reciprocating connecting rods, the connecting rod with the Piston is connected and the piston has a valve disk with at least a passage for the to be sucked in from the bottom of the piston gaseous medium and an annular piston head Has plastic.
- Such a piston for a piston compressor for gaseous Media is known from WO 96/05430.
- the well-known piston has a piston head with an annular groove, in a helical spring washer is used. This spans one Sealing lip of the piston head radially outwards, so that a secure Given the piston head against the cylinder inner wall is.
- a disadvantage of this known piston is that the manufacturing costs are high for such a coil spring washer and Assembly is complex. It has also been found that at the usual heating of the piston head of the coil spring ring is uneven pushes radially outward, causing leaks between the piston head and the inner wall of the cylinder.
- a piston according to the invention has a piston head which a closed metal support ring on the inside of the ring or a metal alloy, the expansion coefficient of the support ring material and the cylinder material approximately are the same. This ensures that the measure between the cylinder inner wall and the support ring is always constant and the one pressed against the cylinder inner wall by the support ring Piston head seals with this.
- a support ring is inexpensive to manufacture and light on the inside the piston head.
- the Brass support ring In an advantageous embodiment of the invention, the Brass support ring.
- the piston head facing Be outside of the support ring curved outward. This results in an easier attachment of the support ring in the corresponding groove of the piston head.
- the outside the piston head is also curved. Total results this advantageously results in a uniform power transmission on the outside of the piston head and thus one secure seal between piston and inner cylinder wall.
- FIG. 1 shows a piston 10 according to the invention for a piston compressor for gaseous media with a cylinder 12.
- a connecting rod 14 is moved back and forth or moved up and down.
- the connecting rod 14 is fixed to the piston 10 connected.
- the piston 10 has a valve disk 16 with an annular shape arranged passages 18 for the piston side gaseous medium to be sucked up.
- valve plate 16 protrudes through the central ring opening of the piston head 20 or the support ring 22 through, the diameter of the projecting valve plate element 30 is smaller than the diameter of the support ring 22.
- piston head 20 one on its inner side facing the connecting rod 14 annular support surface 32 for a piston disc 34.
- the Piston head 20 can be between the valve plate 14 and the Piston disk 34 are moved up and down.
- a closed Support ring 22 made of metal or a metal alloy, the coefficients of expansion of the support ring material and of the cylinder material are approximately the same.
- the support ring 22 is made of brass.
- FIG. 2 shows a schematic, partially sectioned detail drawing of the piston head 20. You can see the annular formation of the piston head 20 and the formation of the bearing surface 32 for the piston disc 34. Furthermore, it can be seen that an annular groove 36 on the inside of the piston head 20 is arranged to receive the support ring 22. The one in FIG. 3 illustrated cross section of the piston head 20 illustrates this.
- Figure 4 shows a schematic, partially sectioned representation of the support ring 22. It can be seen that the support ring 22 on the the outside 28 facing the piston head 20 is curved outwards is trained. It is also clear that the support ring 22 on the inside of the ring has bevelled edges 24, 26. By this bevel becomes the mobility of the valve plate 16 or the valve plate element 30 in the opening of the support ring 22 improved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
Description
- Figur 1
- einen schematischen Schnitt durch den erfindungsgemäßen Kolben;
- Figur 2
- eine schematische Detailzeichnung eines Kolbenkopfes des erfindungsgemäßen Kolbens;
- Figur 3
- einen schematisch dargestellten Querschnitt durch den Kolbenkopf des erfindungsgemäßen Kolbens; und
- Figur 4
- eine teilweise geschnittene, schematisch dargestellte Detailzeichnung eines Stützringes des Kolbenkopfes des erfindungsgemäßen Kolbens.
Claims (8)
- Kolben für einen Kolbenverdichter für gasförmige Medien mit einem innerhalb eines Zylinders (12) hin- und herbewegbaren Pleuel (14), wobei das Pleuel (14) mit dem Kolben (10) verbunden ist und der Kolben (10) einen Ventilteller (16) mit mindestens einem Durchlaß (18) für das von der Kolbenunterseite anzusaugende gasförmige Medium und einen ringförmigen Kolbenkopf (20) aus Kunststoff aufweist,
dadurch gekennzeichnet,
daß der Kolbenkopf (20) an seiner Ringinnenseite einen geschlossenen Stützring (22) aus Metall oder einer Metallegierung aufweist, wobei die Ausdehnungskoeffizienten des Stützringmaterials und des Zylindermaterials ungefähr gleich sind. - Kolben gemäß Anspruch 1,
dadurch gekennzeichnet,
daß der Stützring (22) aus Messing besteht. - Kolben gemäß Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß der Stützring (22) an der dem Kolbenkopf (20) zugewandten Außenseite (28) nach außen gewölbt ausgebildet ist. - Kolben gemäß einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Stützring (22) an der Ringinnenseite abgeschrägte Kanten (24, 26) aufweist. - Kolben gemäß einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Ventilteller (16) durch die zentrale Ringöffnung des Kolbenkopfs (20) bzw. des Stützrings (22) hindurchragt, wobei der Durchmesser des hindurchragenden Ventiltellerelementes (30) kleiner ist als der Durchmesser der Öffnung des Stützrings (22). - Kolben gemäß einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Kolbenkopf (20) an seiner dem Pleuel (14) zugewandten Ringinnenseite eine ringförmige Auflagefläche (32) für eine Kolbenscheibe (34) aufweist. - Kolben gemäß Anspruch 5,
dadurch gekennzeichnet,
daß der Kolbenkopf (20) zwischen dem Ventilteller (14) und der Kolbenscheibe (34) auf- und abbewegt werden kann. - Kolben gemäß einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Stützring (22) in einer ringförmigen Nut (36) an der Ringinnenseite des Kolbenkopfs (20) angeordnet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29814962U | 1998-08-20 | ||
| DE29814962U DE29814962U1 (de) | 1998-08-20 | 1998-08-20 | Kolben für einen Kolbenverdichter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0980977A2 true EP0980977A2 (de) | 2000-02-23 |
| EP0980977A3 EP0980977A3 (de) | 2000-10-11 |
Family
ID=8061560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99116360A Withdrawn EP0980977A3 (de) | 1998-08-20 | 1999-08-19 | Kolben für einen Kolbenverdichter |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0980977A3 (de) |
| DE (1) | DE29814962U1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20106700U1 (de) * | 2001-04-18 | 2002-05-23 | Alusuisse Bayrisches Druckguß-Werk GmbH & Co. KG, 85570 Markt Schwaben | Kolben für einen Kolbenverdichter |
| WO2004011804A1 (de) * | 2002-07-24 | 2004-02-05 | Ventrex Automotive Gmbh | Einrichtung zur verdichtung von gasen |
| AT414270B (de) * | 2002-07-24 | 2006-10-15 | Ventrex Automotive Gmbh | Einrichtung zur verdichtung von gasen |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56136176U (de) * | 1980-03-14 | 1981-10-15 | ||
| GB2175653A (en) * | 1985-05-23 | 1986-12-03 | Song Wu | An air cooling and reciprocating type of air compressor without lubricant |
| WO1988008489A1 (fr) * | 1987-04-21 | 1988-11-03 | Proizvodstvennoe Obiedinenie "Zavod Imeni M.I.Kali | Piston de machine a deplacement volumetrique |
| DE4429097A1 (de) * | 1994-08-17 | 1996-02-22 | Thurner Bayer Druckguss | Kolbenverdichter für gasförmige Medien |
| DE29717655U1 (de) * | 1997-10-02 | 1998-11-12 | Alusuisse Bayrisches Druckguß-Werk GmbH & Co. KG, 85570 Markt Schwaben | Kolbenverdichter für gasförmige Medien |
-
1998
- 1998-08-20 DE DE29814962U patent/DE29814962U1/de not_active Expired - Lifetime
-
1999
- 1999-08-19 EP EP99116360A patent/EP0980977A3/de not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20106700U1 (de) * | 2001-04-18 | 2002-05-23 | Alusuisse Bayrisches Druckguß-Werk GmbH & Co. KG, 85570 Markt Schwaben | Kolben für einen Kolbenverdichter |
| WO2004011804A1 (de) * | 2002-07-24 | 2004-02-05 | Ventrex Automotive Gmbh | Einrichtung zur verdichtung von gasen |
| AT414270B (de) * | 2002-07-24 | 2006-10-15 | Ventrex Automotive Gmbh | Einrichtung zur verdichtung von gasen |
| AT414269B (de) * | 2002-07-24 | 2006-10-15 | Ventrex Automotive Gmbh | Einrichtung zur verdichtung von gasen |
Also Published As
| Publication number | Publication date |
|---|---|
| DE29814962U1 (de) | 1999-11-04 |
| EP0980977A3 (de) | 2000-10-11 |
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Legal Events
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|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| AK | Designated contracting states |
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| AX | Request for extension of the european patent |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: THURNER, HELMUT |
|
| PUAL | Search report despatched |
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| AK | Designated contracting states |
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| 17P | Request for examination filed |
Effective date: 20010411 |
|
| AKX | Designation fees paid |
Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| 17Q | First examination report despatched |
Effective date: 20030214 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20030625 |