EP0099000A2 - Machine à piston ayant des cylindres en étoile - Google Patents

Machine à piston ayant des cylindres en étoile Download PDF

Info

Publication number
EP0099000A2
EP0099000A2 EP83106082A EP83106082A EP0099000A2 EP 0099000 A2 EP0099000 A2 EP 0099000A2 EP 83106082 A EP83106082 A EP 83106082A EP 83106082 A EP83106082 A EP 83106082A EP 0099000 A2 EP0099000 A2 EP 0099000A2
Authority
EP
European Patent Office
Prior art keywords
suction
piston machine
machine according
channels
pressure
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.)
Granted
Application number
EP83106082A
Other languages
German (de)
English (en)
Other versions
EP0099000A3 (en
EP0099000B1 (fr
Inventor
Guido Oberdorfer
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.)
WAP Reinigungssysteme GmbH and Co
Original Assignee
WAP Reinigungssysteme GmbH and Co
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 WAP Reinigungssysteme GmbH and Co filed Critical WAP Reinigungssysteme GmbH and Co
Priority to AT83106082T priority Critical patent/ATE39166T1/de
Publication of EP0099000A2 publication Critical patent/EP0099000A2/fr
Publication of EP0099000A3 publication Critical patent/EP0099000A3/de
Application granted granted Critical
Publication of EP0099000B1 publication Critical patent/EP0099000B1/fr
Expired 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0452—Distribution members, e.g. valves

Definitions

  • the present invention relates to a piston machine with at least two cylinders, with suction and pressure valves, which are assigned to the cylinders in pairs, and with a suction and a pressure line, which are connected to the cylinders via the valves mentioned.
  • One of the objects of the present invention is to provide a piston machine with at least two cylinders which does not have the disadvantages mentioned.
  • the piston machine according to FIGS. 1 and 2 has cylinders 1 arranged in a star shape, in which pistons 2 are located.
  • the pistons 2 are under the action of an eccentric 3, which is seated on the shaft 4 of an electric motor 5.
  • a flange 7 for receiving valves 8 and 9 is formed on the respective cylinder head 6.
  • a cover 10 with an oil drain 11 is attached.
  • a connector 12 is attached to the front of the arrangement already described, which is designed as a shaped piece.
  • This fitting 12 contains suction channels 13 and pressure channels 14, which, according to the arrangement of the cylinders 1, also run in a star shape.
  • One end of the suction channels 13 opens into a cavity 15 formed in the shaped piece 12.
  • the shaped piece 12 has a threaded sleeve 16 in the area of the hollow space 15, by means of which the suction line (not shown) is connected to the machine.
  • the shaped part 12 can in principle be designed as a plate in which the channels 13 and 14 run in a star shape. However, it is also possible to merely arrange tubes in a star shape instead of a plate and to connect them to one another in such a way that the channels 13 and 14 delimited by these tubes are connected to one another as required.
  • Such an embodiment of the molding 12 is shown in the drawing.
  • the first tubes 17 limit the Suction channels 13 and the second pipes 18 delimit the pressure channels 14.
  • the ends of the suction pipes 17 located in the central area of the machine open into the cavity 15.
  • the corresponding ends of the pressure pipes 18 are connected to one another in terms of flow in the central area of the machine, but they have no connection with the cavity 15.
  • the tubes 17 having the suction channels 13 and the tubes 18 having the pressure channels 14 are designed as two star-shaped tube sets. These tube sets are arranged concentrically and firmly connected to each other in the central area. However, they are located one behind the other, as can best be seen in FIG. 2.
  • the cavity 15 is separated from the pressure channels 14 by the wall 30.
  • the tubes 17 of the one tube set are offset from one another in the circumferential direction relative to the tubes 18 of the other tube set.
  • the suction channel 13 is at an angle to the pressure channel 14 which communicates with the same cylinder 1.
  • the end portions of the tubes 17 and 11 lying in the peripheral region of the machine can then lie side by side. They are provided with flanges 19, the end faces of which are in the same plane. These flanges 19 lie opposite the respective flange 7 on the cylinder head 6.
  • the end parts of the tubes 17 and 18 mentioned are provided with runners 20 in which bores 21 for receiving screws (not shown) are made.
  • valve pairs 8 and 9 are arranged between the flanges 7 and 19 and clamped with the aid of the screws mentioned, which are screwed into the cylinder head 6.
  • the connection between the valves 8 and 9 and the interior of the cylinder takes place with the aid of openings 22 (FIG. 2) which are implemented in the cylinder head and in the flange 7.
  • This opening 23 passes through a sprue 24, in which threaded holes 25 for fastening the pressure line (not shown) are made.
  • a so-called by-pass device is normally connected between the pressure line and the machine. When the pressure in the pressure line exceeds a predetermined value, the by-pass device returns the fluid to the suction line.
  • suction and pressure channels 13 and 14 The arrangement of suction and pressure channels 13 and 14 described above enables a particularly advantageous attachment of the by-pass device to the machine.
  • a suction channel 13 and a pressure channel 14 lead to the respective cylinder, which are close to one another.
  • one of the pressure channels 14 is provided with the outlet opening 23.
  • Another opening 26 can be made in the adjacent suction channel 13.
  • suction channel 13 or that suction tube 17 is provided with the opening 26, which is assigned to the same cylinder 1 as the pressure channel 14 or the pressure tube 18 with the opening 23.
  • the by-pass device is inserted into the holes 25 penetrating screws (not shown) attached to the machine.
  • the entrance opening and the return opening of the by-pass device communicate with the openings 23 and 26 in the channels of the machine.
  • the pressure line is only connected to the by-pass device.
  • the by-pass device bridges the two mentioned oeff 23 and 26, and it allows the fluid, if a still permissible pressure in the pressure line is exceeded, to be returned to the suction part of the machine.
  • valves 8 and 9 can be designed as described, for example, in German Offenlegungsschrift No. 2753370.
  • the pressure inside the cylinders reaches very high values, these pressure values rapidly changing in accordance with the reciprocating movement of the respective piston. This causes a heavy load on the fasteners holding the cylinder head on the cylinder. If the valves are attached to the side of the cylinder head, the pumped fluid also causes a rapidly changing lateral stress on the fastening means for the cylinder head. Such a combined stress on the fasteners mentioned could lead to malfunctions in machine operation during long-term operation of the machine.
  • Another object of the present invention is therefore to design the machine in such a way that the combined stressing of the fastening means mentioned does not occur.
  • the openings 22 are made in the end wall 31 of the cylinder head 6 (FIG. 3), while the openings 22 mentioned in the embodiment of the machine described above were made in the side wall of the cylinder head 6.
  • the valves 8 and 9 already mentioned in the form of cartridges.
  • the end section of the respective channel 13 or 14 rests on these valve cartridges 8 and 9.
  • Section of the channel 13 or 14 which has the mouth resting on the valve cartridges 8 or 9 and was approximately at right angles to the rest of the channel, this section 32 of the channel 13 or 14 closes with the remaining part 33 in this further development of the machine of the channel 13 or 14 a sharp angle.
  • the mentioned end section 32 of the channel 13 or 14 now runs almost in the opposite direction with respect to the remaining part 33 of the channel 13 or 14.
  • the connection between the end section 33 of the channels 13 and 14 and the cylinder head 6 is again made with the aid of flanges and screws, essentially as described above.
  • the lag screws can be long enough to reach cylinder 1.
  • the pressure inside the cylinder 1 caused by the movement of the pistons 2 and the stress from the flowing fluid stresses the cylinder head 6 and therefore also its fastening means in the same direction, namely in the axial direction of the cylinder 1.
  • Such stress can be easily absorbed by suitable dimensioning of the screws mentioned. In this case, you also save a set of flanges and screws. Because in the machine described above, a second set of flanges and screws for fastening the cylinder head 6 to the cylinder 1 is required.
  • the connecting piece that connects the individual cylinder heads 6 to one another and then connects them to the suction and pressure lines can be made even more expedient.
  • 4 contains individual fittings 35, 36 and 37 which are fastened to the cylinder heads 6 with the aid of lag screws 38 and with the interposition of the valve cartridges 8 and 9 already described.
  • Each cylinder head 6 is thus such a fitting 35, 36 and 37 assigned.
  • suction channels 13 and pressure channels 14 are executed, which are connected at one end to the valves 8 and 9 already mentioned.
  • the fittings 35, 36 and 37 are, however, only so large that they still cover the cylinder head 6.
  • the connection between such fittings 35, 36 and 37 is made with the help of tubes 39 and 40.
  • the end portions of these tubes 39 and 40 are inserted into the fittings, in such a way that the end portions of tubes 39 and 40 are located at the other end of the Connect suction duct 13 or pressure duct 14 in the respective fitting 35, 36 or 37.
  • this connecting piece is achieved by designing one of the shaped pieces 37 in such a way that the pipes 39 and 40 of all the other shaped pieces 35 and 36 end in this shaped piece 37. At the same time, this middle from piece 37 is provided with the threaded sleeve 16 already discussed for connecting the suction line and with the socket 24 for fastening the pressure line. As can be seen from FIG. 4, the left pressure duct 14 overlaps the right suction duct 13 from the right fitting 35 to the left fitting 36.
  • the piston seal in the cylinder can be worn during long-term operation of the machine. Such wear of the seal has the consequence that the fluid can get from the space in front of the piston 2 along the piston 2 to the eccentric 3 of the machine. This can cause the machine to fail. To prevent this, the measures shown in FIG. 5 can be taken on the machine.
  • the piston seal 42 which is located between the cylinder 1 and the cylinder head 6, has a cylindrical base body 43 which is provided with a through opening for the piston 2.
  • the wall of this through opening is provided with a circumferential groove 41, which opens into the interior of the base body 43.
  • a tube 44 is made, the interior of which adjoins the cavity delimited by the aforementioned groove 41.
  • the other end of this tube 44 passes through the wall of the first tube 17 of the connecting piece 12 according to FIGS. 1 and 2 and it opens into the suction channel 13.
  • the end of the connecting tube located in the wall of the first tube 17 of the connecting piece 12 44 is provided with a seal 45 so that no ambient air can be drawn in at this point.
  • sealing sleeves 46 and 47 lying one on top of the other.
  • sealing sleeves 49 and 50 are compressed between the base body 43 and a counterpart 51, which on the Cylinder 1 rests and protrudes into the recess 48.
  • the sealing sleeves 46, 47, 49 and 50 lie tight against the piston.
  • the fluid which possibly reaches the zone of the groove 41 which lies behind the first gasket set 46, 47, is sucked from here under the action of the underpressure in the suction channel 13 out of the groove 41 through the connecting pipe 44 and into the cylinder head 6 returned.
  • the sealing sleeves 49 and 50 of the lower seal set should additionally ensure that the fluid does not reach the eccentric 3.
  • these sealing sleeves 49 and 50 are also intended to ensure that as little lubricant as possible gets into the piston-cylinder space from the eccentric 3.
  • a tube 51 is arranged in the suction channel 13, the outer end 52 of which is connected via a metering device to a storage container (not shown) for the substance to be mixed.
  • the mouth of the end 53 of the mixing tube 51 located in the suction channel 13 lies in the same plane as the mouth of the suction channel 13 to which the valve 8 is assigned.
  • the reduction in the cross section of the aforementioned mouth of the suction channel 13, which is brought about by the presence of the inner end 53 of the mixing tube 51 in the mouth of the suction tube 13, results in a pressure drop before the mouth of the mixing tube 51. This negative pressure enables the substance to be mixed to be introduced from the storage container into the suction channel 13 and thus also into the fluid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP83106082A 1982-07-15 1983-06-22 Machine à piston ayant des cylindres en étoile Expired EP0099000B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83106082T ATE39166T1 (de) 1982-07-15 1983-06-22 Kolbenmaschine mit sternfoermig angeordneten zylindern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4295/82 1982-07-15
CH429582 1982-07-15

Publications (3)

Publication Number Publication Date
EP0099000A2 true EP0099000A2 (fr) 1984-01-25
EP0099000A3 EP0099000A3 (en) 1984-10-17
EP0099000B1 EP0099000B1 (fr) 1988-12-07

Family

ID=4273432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106082A Expired EP0099000B1 (fr) 1982-07-15 1983-06-22 Machine à piston ayant des cylindres en étoile

Country Status (5)

Country Link
US (1) US4545732A (fr)
EP (1) EP0099000B1 (fr)
AT (1) ATE39166T1 (fr)
DE (1) DE3378649D1 (fr)
SU (1) SU1347871A3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8501315A (nl) * 1985-05-08 1986-12-01 Multinorm Bv Pomp.
DE9213982U1 (de) * 1992-10-16 1993-08-12 Wap Reinigungssysteme Gmbh & Co, 89287 Bellenberg Wasserverteilung einer Radialkolbenpumpe für Hochdruck-Reinigungsanwendungen
USD380525S (en) * 1994-05-31 1997-07-01 Tetra Laval Holdings & Finance S.A. Connection piece for milk pipeline valve
AT3212U1 (de) * 1998-05-22 1999-11-25 Weber Hydraulik Gmbh Radialkolbenpumpe
US20130195700A1 (en) * 2012-02-01 2013-08-01 Min-Chien Teng Pressurizing pump structure
WO2021111175A1 (fr) * 2019-12-05 2021-06-10 Ferroni Transmission S.R.L. Pompe adaptée pour exercer une action de compression sur un fluide et moteur actionné par un fluide de propulsion correspondant

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US790624A (en) * 1904-06-08 1905-05-23 Clarence Fancher Wood-grinder.
FR351803A (fr) * 1905-02-25 1905-07-26 Eugene Koch Moteur rotatif
US978258A (en) * 1909-02-17 1910-12-13 Zimmer Vacuum Renovator Company Air-pumping apparatus.
GB191001519A (en) * 1910-01-20 1910-10-06 James Compton Merryweather Improvements in Pumps.
FR538375A (fr) * 1919-10-15 1922-06-08 Disposition de compresseur pour machines frigorfiques et autres applications
GB341667A (en) * 1929-01-23 1931-01-22 Rene Paul Automatic variable output compressor
US2255851A (en) * 1940-10-21 1941-09-16 Radial Pump And Compressor Com Pump assembly
US2545791A (en) * 1944-10-13 1951-03-20 Joy Mfg Co Fluid compressor
US2539277A (en) * 1945-03-09 1951-01-23 Martin A High Variable stroke pump
US2683422A (en) * 1950-05-19 1954-07-13 Jr Albert Z Richards Rotary engine or compressor
US2801596A (en) * 1953-04-02 1957-08-06 Sewell Ronald Percival Multi-cylinder pump
US2945451A (en) * 1953-04-20 1960-07-19 David E Griswold Hydraulic motor and/or pump
FR1191147A (fr) * 1958-02-06 1959-10-16 Fabre Ulysse Ets Pompe à trois pistons
US2978149A (en) * 1959-12-18 1961-04-04 Rosen Sidney Variable pressure suck-back device for a pump
FR1355894A (fr) * 1963-03-22 1964-03-20 John Deere Lanz Ag Régulateur automatique pour pompes à pistons, notamment pour pompes à pistons radiaux
DE1703372B2 (de) * 1968-05-09 1978-02-23 Heilmeier & Weinlein, Fabrik für Oel-Hydraulik, 8000 München Hydrostatische radialkolbenpumpe
CA983775A (en) * 1972-04-27 1976-02-17 Abex Corporation Fluid pressure energy translating device
DE2336147A1 (de) * 1973-07-16 1975-01-30 Wepuko Hydraulik Gmbh Einrichtung zur hydraulik-kolbenabdichtung bei hochdruck-kolbenpumpen
DE2753370C2 (de) * 1977-11-30 1986-05-22 Oberdorfer, Guido, 7919 Bellenberg Kolbenpumpe
US4381179A (en) * 1980-10-31 1983-04-26 Lear Siegler, Inc. Pumps with floating wrist pins

Also Published As

Publication number Publication date
US4545732A (en) 1985-10-08
ATE39166T1 (de) 1988-12-15
SU1347871A3 (ru) 1987-10-23
EP0099000A3 (en) 1984-10-17
EP0099000B1 (fr) 1988-12-07
DE3378649D1 (de) 1989-01-12

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