EP0826883A2 - Pompe à piston rotatif - Google Patents

Pompe à piston rotatif Download PDF

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Publication number
EP0826883A2
EP0826883A2 EP97114889A EP97114889A EP0826883A2 EP 0826883 A2 EP0826883 A2 EP 0826883A2 EP 97114889 A EP97114889 A EP 97114889A EP 97114889 A EP97114889 A EP 97114889A EP 0826883 A2 EP0826883 A2 EP 0826883A2
Authority
EP
European Patent Office
Prior art keywords
rotary piston
rotary
cylinder
pump according
piston pump
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
EP97114889A
Other languages
German (de)
English (en)
Other versions
EP0826883B1 (fr
EP0826883A3 (fr
Inventor
Werner E. Friedrich
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT97114889T priority Critical patent/ATE201088T1/de
Priority to DE59703496T priority patent/DE59703496D1/de
Publication of EP0826883A2 publication Critical patent/EP0826883A2/fr
Publication of EP0826883A3 publication Critical patent/EP0826883A3/fr
Application granted granted Critical
Publication of EP0826883B1 publication Critical patent/EP0826883B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/352—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the vanes being pivoted on the axis of the outer member

Definitions

  • the invention relates to a rotary piston pump with the features of the preamble of Claim 1.
  • a rotary piston compression technique is known from EP 0 613 516 B1 and US 5,636,610 known.
  • An eccentrically mounted rotating double piston in a rotating cylinder bridges constantly varying distances and angular positions during one revolution between the rotating double piston and the rotating cylinder by scissors moving parts of the rotary double piston.
  • Disadvantages of this prior art are the many parts and high shear and friction forces.
  • the object of the invention is to provide a versatile rotary piston pump with few moving parts, low friction losses and low efficiency.
  • a rotary piston pump preferably has a housing cylindrical chamber with a first diameter in the housing.
  • Intake and outlet channels for the medium to be pumped lead through the housing into the cylindrical chamber.
  • On the side boundary walls in the cylindrical Chamber is rotatably mounted a rotary cylinder with a second diameter, the smaller is than the first diameter, with the rotary cylinder having a portion of the cylindrical chamber between the suction and outlet channels forms a seal.
  • a Rotary piston which is rotatably mounted coaxially to the cylindrical chamber and on his Has a part-circular segment, forms a with the part-circular segment Seal with the cylindrical chamber.
  • the rotary piston of driven outside the housing, the rotary piston in turn the Rotating cylinder drives.
  • the part-circular segment extends so far in the circumferential direction of the cylindrical Chamber that the intake and outlet channels in a closing angle position simultaneously from cantilevered rotary piston can be closed.
  • the rotary piston pump according to the invention is a positive displacement pump. You can on valves dispense and is particularly compact, versatile and can be used as a feed, dosing or vacuum pump or compression technology for internal combustion engines.
  • the rotary piston pump according to the invention achieves high pressures, precise dosing and advantageously promotes liquid and gaseous media with an expected better efficiency than comparable conventional pumps.
  • the pump according to the invention is composed of a few parts, between which comparatively low frictional forces act. Also enables this pump non-contact rotations of the rotating functional parts with each other.
  • the rotary cylinder is circular Grooves of the side boundary walls or in bushings of the side boundary walls guided.
  • the rotary cylinder Equipped with tangentially displaceable sealing elements that rest against the rotary piston.
  • the Rotary piston between storage in the side boundary walls and the part-circular Segment shaped in such a way that rotary cylinders and Place the rotary pistons against each other and form a seal to the working chamber.
  • the Rotary pistons are provided with a sliding sleeve, which is located between the side bearings Boundary walls and the part-circular segment and the rotating cylinder movable is guided and the ration cylinder and the Rotating pistons to each other and to the working chamber seals.
  • cooling or heating chambers are in the housing intended.
  • FIG. 1 shows the interior of the cylindrical chamber 10 for better clarification Rotary piston 1 and rotary cylinder 2.
  • a rotary piston pump of a first type has a housing 17 with a cylindrical chamber 10 with a first diameter on the chamber 10 is through the inner lateral surface 5 and delimited by two flat side walls 6.
  • the inner surface 5 of the chamber 10 could also be spherical, but preferably it has a surface shape, which is technically easy to manufacture.
  • An intake duct 8 through housing 17 and an outlet duct 9 through housing 17 each lead into the chamber 10.
  • Eccentric but parallel to the axis of the cylindrical chamber 10 is in the two flat lateral boundary walls 6 a rotary cylinder 2 with a second Diameter that is smaller than the first diameter, stored in circular grooves 15, wherein the rotary cylinder 2 is arranged in the chamber 10 that between the intake duct 8 and outlet duct 9 from the rotary cylinder 2 have a seal 18 on the inner lateral surface 5 is formed with the chamber 10.
  • the are the inner surface 5 and the lateral boundary walls 6, forms the Rotary cylinder 2 of the rotary piston pump according to the invention a sickle-shaped Section of chamber 10.
  • Rotary cylinder 2 is a cylinder jacket that is open on one side.
  • the one facing chamber 10 Surface of the races 4 is flat with the side boundary walls 6 of the cylindrical chamber 10.
  • the rotary piston 1 has a part-circular segment on the circumference, which in its Angle position (Fig. 3) both the intake duct 8 and the outlet duct 9 and intermediate seal 18 covers, so that both the Connection of the intake duct 8 and that of the outlet duct 9 to the chamber 10 is interrupted is.
  • cooling or heating chambers can 13 can be created.
  • Rotary piston 1 drives the rotary cylinder 2.
  • Figure 3 shows the housing and functional parts of the first type of rotary piston pump the rotary piston 1 in its closing angle position. Both the intake duct 8 and the outlet channel 9 are through the part-circular segment of the protruding rotary piston 1 closed. In this position, the maximum achievable, precisely metered suction volume is in the chamber 10 included.
  • Fig. 4 The rotating piston 1 rotating in the direction of the arrow on the piston shaft 7 begins Promote or compress medium in the chamber 10.
  • the outlet channel 9 is open.
  • Rotary piston 1 closes the inlet channel 8.
  • the liquid or gaseous medium of the chamber 10 can be unhindered by the rotating rotary piston 1 through a pressure valve, i.e. without corresponding throttling losses, from the chamber 10 in the outlet channel 9 are conveyed on. Pressure builds up in chamber 10.
  • the pressure continues to increase as the rotary piston 1 continues to rotate on the pressure side.
  • the suction-side inner rotor shaft 20 has the apex on the sealing line 18 almost reached, so that the entire rotary cylinder jacket 2 after this rotational position can withstand high pressures.
  • Fig. 5 In this position, the rotary piston pump according to the invention both sucks and expresses too.
  • the medium to be pumped flows through a suction valve without throttling losses through the suction channel 8 into the chamber 10.
  • the pump medium Flows out without valve throttling.
  • the slide valve 3 has reached its widest deflection.
  • Fig. 6 The pumping process per revolution is completed on the pressure side.
  • the rotary piston pump according to the invention can be cooled at high powers to be transmitted, or in heating chambers 13 tough pumping media can be kept at the required pump viscosity by certain temperature settings, which enables better pumping.
  • the rotary piston 1, which according to the invention with its part-circular segment Forms seal with the cylindrical chamber 10 has a in the embodiment Cross-sectional profile comparable to a mushroom with a flat cap and a strong stem.
  • the sweeping Piston cover 24, 25 as a part-circular segment fulfills the sealing function to chamber 10 and has closing and opening functions for the intake duct 8 and the outlet duct 9, respectively.
  • the rotary cylinder 2 which is formed from two symmetrical halves, engages around the legs 20, 21 the rotary piston 1 on both sides below the piston covers 24, 25.
  • the Rotary cylinder 2 has cutouts 23 on its legs 20, 21 Profiles suitable for the pressure and suction side piston covers 24, 25, which recesses the overlapping parts of the piston ceilings on the pressure and suction sides 24, 25 offer precisely fitting piston bed 23.
  • this second design can be dispensed with additional movable sealing elements.
  • the symmetrical specific designs of the rotating parts ensure a tight fit both rotating bodies against each other in every turning phase.
  • Another alternative rotary piston pump of a third type is one other storage of the rotary cylinder 2 and a specific sealing and guiding device designed between the rotary piston 1 and rotary cylinder 2 (Fig. 12 and 13).
  • the bearing function for the rotary piston 2 is performed by flat cylinder liners 16 in the two Sidewalls 6.
  • Figures 14 to 17 show the operation of the third type of the invention Rotary piston pump in different working positions of one revolution. To the previous ones Explanations to Figures 1 to 6 and 7 to 11 are also referred to again.
  • the sliding sleeve 11 is always at the same distance between the Rotational cylinder legs 20, 21 held.
  • the changing distances and angular positions between the piston rod 19 and the rotary cylinder legs 20, 21 during a Revolution can thus be bridged, i.e. an even seal between Rotary piston 1 and rotary cylinder 2 is also in this in every rotational angle position Design ensured.
  • the cylinder liners 16 in the side walls 24 of the housing 17 result in a simpler one Construction.
  • the on the piston rod 19 forcibly guided sleeve 11 as a sealing element between the rotating parts creates a reliable for specific applications and working conditions and beneficial seal.
  • the rotary piston pump according to the invention offers in its various designs as Displacement pump depending on the version compared to most traditional pump technologies a number of advantages, such as compact design, function without valves, can be used for liquid and gaseous pump media; it achieves high pump pressures with high ones Stability, enables precise dosing, is low in pulsation and self-priming, can promote gently.
  • this pump principle is versatile and a. as Feed pump with low to high pressure output, as a metering pump, as a vacuum pump, as Compressor or as a compression part e.g. in internal combustion engines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP19970114889 1996-09-02 1997-08-28 Pompe à piston rotatif Expired - Lifetime EP0826883B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT97114889T ATE201088T1 (de) 1997-08-28 1997-08-28 Rotationskolbenpumpe
DE59703496T DE59703496D1 (de) 1997-08-28 1997-08-28 Rotationskolbenpumpe

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19635540 1996-09-02
DE19635540 1996-09-02
DE19645501 1996-11-05
DE19645501 1996-11-05

Publications (3)

Publication Number Publication Date
EP0826883A2 true EP0826883A2 (fr) 1998-03-04
EP0826883A3 EP0826883A3 (fr) 1998-03-18
EP0826883B1 EP0826883B1 (fr) 2001-05-09

Family

ID=26028959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970114889 Expired - Lifetime EP0826883B1 (fr) 1996-09-02 1997-08-28 Pompe à piston rotatif

Country Status (2)

Country Link
EP (1) EP0826883B1 (fr)
DE (1) DE19730988A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20002385U1 (de) * 2000-02-10 2001-06-21 Friedrich, Werner E., 67141 Neuhofen Drehschieberverdrängerpumpe
DE10103580A1 (de) * 2001-01-26 2002-08-08 Werner E Friedrich Magnetgekuppelte Drehschieberverdrängerpumpe

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814255A (en) 1956-02-21 1957-11-26 Lorenzetti Lorenzo Hydraulic pump
DE3128432A1 (de) 1980-11-08 1982-06-16 Pierburg Gmbh & Co Kg, 4040 Neuss "drehfluegelpumpe und verfahren zum betreiben derselben"
DE3135254A1 (de) 1981-09-05 1983-03-17 Robert Bosch Gmbh, 7000 Stuttgart Fluegelkolbenpumpe
DE3412971A1 (de) 1984-04-06 1985-10-24 Pierburg Gmbh & Co Kg, 4040 Neuss Drehkolbenpumpe
DE8434465U1 (de) 1984-11-24 1986-03-27 Robert Bosch Gmbh, 7000 Stuttgart Flügelabdichtung in Flügelzellenpumpen
DE3826326A1 (de) 1987-08-08 1989-02-23 Barmag Barmer Maschf Fluegelzellenvakuumpumpe
EP0613516B1 (fr) 1991-11-21 1996-07-17 FRIEDRICH, Werner E. Moteur à combustion interne, à pistons rotatifs et à chambres multiples

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1535275A (en) * 1924-01-26 1925-04-28 Westin Oliver Peter Rotary pump
GB669653A (en) * 1949-06-02 1952-04-09 George Herbert Barnes Improvements in rotary pumps, compressors and the like
DE830614C (de) * 1949-09-20 1952-02-07 Juergen Clausen Drehkolbenmaschine
ES407242A1 (es) * 1972-10-03 1975-09-16 Bosch Barata Perfeccionamientos en motores de combustion interna.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814255A (en) 1956-02-21 1957-11-26 Lorenzetti Lorenzo Hydraulic pump
DE3128432A1 (de) 1980-11-08 1982-06-16 Pierburg Gmbh & Co Kg, 4040 Neuss "drehfluegelpumpe und verfahren zum betreiben derselben"
DE3135254A1 (de) 1981-09-05 1983-03-17 Robert Bosch Gmbh, 7000 Stuttgart Fluegelkolbenpumpe
DE3412971A1 (de) 1984-04-06 1985-10-24 Pierburg Gmbh & Co Kg, 4040 Neuss Drehkolbenpumpe
DE8434465U1 (de) 1984-11-24 1986-03-27 Robert Bosch Gmbh, 7000 Stuttgart Flügelabdichtung in Flügelzellenpumpen
DE3826326A1 (de) 1987-08-08 1989-02-23 Barmag Barmer Maschf Fluegelzellenvakuumpumpe
EP0613516B1 (fr) 1991-11-21 1996-07-17 FRIEDRICH, Werner E. Moteur à combustion interne, à pistons rotatifs et à chambres multiples
US5636610A (en) 1991-11-21 1997-06-10 Friedrich; Werner E. Multi-chamber rotary piston-engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20002385U1 (de) * 2000-02-10 2001-06-21 Friedrich, Werner E., 67141 Neuhofen Drehschieberverdrängerpumpe
DE10102852C2 (de) * 2000-02-10 2002-10-24 Werner E Friedrich Drehschieberverdrängerpumpe
DE10103580A1 (de) * 2001-01-26 2002-08-08 Werner E Friedrich Magnetgekuppelte Drehschieberverdrängerpumpe
DE10103580B4 (de) * 2001-01-26 2004-04-08 Friedrich, Werner E. Magnetgekuppelte Drehschieberverdrängerpumpe

Also Published As

Publication number Publication date
EP0826883B1 (fr) 2001-05-09
DE19730988A1 (de) 1998-03-12
EP0826883A3 (fr) 1998-03-18

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