EP0907022A2 - Dispositif pour éviter des retours de détente gênants dans un compresseur à piston - Google Patents

Dispositif pour éviter des retours de détente gênants dans un compresseur à piston Download PDF

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Publication number
EP0907022A2
EP0907022A2 EP98117617A EP98117617A EP0907022A2 EP 0907022 A2 EP0907022 A2 EP 0907022A2 EP 98117617 A EP98117617 A EP 98117617A EP 98117617 A EP98117617 A EP 98117617A EP 0907022 A2 EP0907022 A2 EP 0907022A2
Authority
EP
European Patent Office
Prior art keywords
valve
piston
connecting rod
cam
piston crown
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Withdrawn
Application number
EP98117617A
Other languages
German (de)
English (en)
Other versions
EP0907022A3 (fr
Inventor
Heribert Dipl.-Ing. Möller (FH)
Manfred Dipl.-Ing. Pister (Fh)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAN Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MAN Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Publication of EP0907022A2 publication Critical patent/EP0907022A2/fr
Publication of EP0907022A3 publication Critical patent/EP0907022A3/fr
Withdrawn legal-status Critical Current

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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

Definitions

  • the invention relates to a device according to the preamble of the claim 1.
  • the invention has for its object a device for avoiding To design back expansion so that one with the least possible construction effort gets along.
  • a piston compressor essentially consists of a cylinder 1, a Crankcase 2, a piston 3, and a crankshaft 4 with a connecting rod 5.
  • An uncomfortable The characteristic of the piston compressor is that it has negative torques has, which therefore stir that after exceeding the piston in the OT a Back expansion occurs. This causes gears when the compressor is driven very unpleasant gear noise due to flanking. To do this It is necessary to avoid the compression space between piston 3 and one To connect the cylinder head base 6 to the atmosphere via the crankcase 2.
  • valve 7 which is in a piston crown 8 is arranged.
  • This valve 7 is actuated by a cam 9, which itself on a cam disk 10, or also directly on a connecting rod eye 11 of the Connecting rod 5 is located.
  • the cam disk 10 is connected in a rotationally fixed manner to the connecting rod eye 11.
  • the function is to be said that the movement of the valve 7 from the pivoting movement of the connecting rod 5 is derived. This leads to the pivoting movement of the connecting rod 5
  • Connecting rod eye 11 makes a rotary movement which is based on the rotation of the cam disk 10 and the cam 9 located thereon to raise the valve 7 in the area the TDC position of the piston 3 leads. Through this opening of the valve 7 in Compression room relaxes compressed air, so that a back expansion with the associated negative consequences are avoided.
  • Fig. 2 shows in detail an embodiment of the valve 7.
  • the valve 7 consists of a Valve plate 12 and the associated valve stem 13.
  • the valve plate 12 is by a compression spring 14 against a valve seat incorporated in the piston crown 15 pressed with holes 16.
  • the compression spring 14 is supported against the piston crown 8 and a spring plate 17, which is connected to the valve stem 13.
  • the valve 7 via the connecting rod eye 11 rotatably connected cam 10 with cam 9 raised.
  • the in Compression room air is blown off through the holes 16, and thus avoiding re-expansion.
  • FIG. 3 Another embodiment of the valve 7 is shown in FIG. 3.
  • a membrane 19 is provided, which by means of rivets 20 is anchored to the piston crown 8.
  • the membrane 19 closes the bore 16. If air is now to be blown off in the TDC position of the piston 3 (FIG. 1), then the Diaphragm 19 through the valve stem 13 by means of the cam 9 against the restoring force the compression spring 14 is raised and air escapes through the bore 16 in the piston crown 8, so that back expansion is avoided.
  • the device according to the invention can be used in series production Piston compressor only by installing valve 7 and attaching one Cam 10 on the connecting rod head 11 converted to a low-noise operation become.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP98117617A 1997-10-01 1998-09-17 Dispositif pour éviter des retours de détente gênants dans un compresseur à piston Withdrawn EP0907022A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19743444 1997-10-01
DE1997143444 DE19743444C2 (de) 1997-10-01 1997-10-01 Vorrichtung zur Vermeidung von Rückexpansion bei Kolbenverdichtern

Publications (2)

Publication Number Publication Date
EP0907022A2 true EP0907022A2 (fr) 1999-04-07
EP0907022A3 EP0907022A3 (fr) 2001-06-20

Family

ID=7844319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98117617A Withdrawn EP0907022A3 (fr) 1997-10-01 1998-09-17 Dispositif pour éviter des retours de détente gênants dans un compresseur à piston

Country Status (2)

Country Link
EP (1) EP0907022A3 (fr)
DE (1) DE19743444C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016114511A1 (de) 2015-08-31 2017-03-02 Martin Maeser Hubkolbenmaschine mit Einlassventil im Kolbenboden

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902658A1 (de) 1989-01-30 1990-08-02 Knorr Bremse Ag Kolbenmkompressor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE229229C (fr) *
GB248595A (en) * 1925-05-13 1926-03-11 Leon De Vooght Improved air compressor
US1607478A (en) * 1925-06-18 1926-11-16 Prestage Edwin Suction valve of air and gas compressors
DE3112386A1 (de) * 1981-03-28 1982-12-02 Fichtel & Sachs Ag, 8720 Schweinfurt Verdichter
DE3514119A1 (de) * 1985-04-19 1986-10-23 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren zum betrieb eines kompressors mit wenigstens zwei zylindern sowie vorrichtung zur durchfuehrung des verfahrens
DE4018055A1 (de) * 1990-06-06 1991-12-12 Man Nutzfahrzeuge Ag Verfahren zur verminderung von getriebegeraeuschen bei kolbenverdichtern, sowie vorrichtung zur durchfuehrung dieses verfahrens

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902658A1 (de) 1989-01-30 1990-08-02 Knorr Bremse Ag Kolbenmkompressor

Also Published As

Publication number Publication date
EP0907022A3 (fr) 2001-06-20
DE19743444C2 (de) 1999-12-16
DE19743444A1 (de) 1999-04-08

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