EP0383694B1 - Saugpumpe - Google Patents

Saugpumpe Download PDF

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Publication number
EP0383694B1
EP0383694B1 EP19900400430 EP90400430A EP0383694B1 EP 0383694 B1 EP0383694 B1 EP 0383694B1 EP 19900400430 EP19900400430 EP 19900400430 EP 90400430 A EP90400430 A EP 90400430A EP 0383694 B1 EP0383694 B1 EP 0383694B1
Authority
EP
European Patent Office
Prior art keywords
rotor
suction
duct
fins
blades
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.)
Expired - Lifetime
Application number
EP19900400430
Other languages
English (en)
French (fr)
Other versions
EP0383694A1 (de
Inventor
Guy Garnot
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0383694A1 publication Critical patent/EP0383694A1/de
Application granted granted Critical
Publication of EP0383694B1 publication Critical patent/EP0383694B1/de
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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D23/00—Other rotary non-positive-displacement pumps
    • F04D23/001—Pumps adapted for conveying materials or for handling specific elastic fluids
    • F04D23/003—Pumps adapted for conveying materials or for handling specific elastic fluids of radial-flow type

Definitions

  • the present invention relates to a suction pump intended in particular, but not exclusively, for towed and carried pick-up machines, such as sweepers, lawn mowers, road maintenance equipment, etc.
  • This type of gear is used more and more. They include cutting and / or cleaning means connected to a suction duct. At the other end of the suction duct, there is a pump generally comprising a rotor rotating inside a chamber or casing, the casing itself being connected to a discharge pipe, the second end of which opens out, either in the open air or in a collection hopper.
  • FR-A-884 320 discloses a double-sided blower wheel which aims to produce a gas mixture.
  • EP-A-0 227 021 relates to a pneumatic conveyor having air intake orifices on its front and rear faces. Additional ventilation fins are arranged between two discs.
  • the turbine described does not shred the materials and the blades do not provide a centrifugal mechanical ejection of the material.
  • the material is transported only pneumatically without contact with the rotor and jams are to be feared with the fibrous products.
  • the present invention relates to a suction pump whose rotor can rotate at a lower speed than the rotors of known pumps, and in which a compression effect occurs simultaneously with the suction effect, so that the sucked material is ejected into the exhaust duct on a kind of air cushion.
  • the suction pump comprises a rotor disposed inside a casing, the casing being connected on the one hand to a suction duct and, on the other hand to a discharge duct, the rotor comprising a shaft and at least one disc, the disc carrying, on the suction side of the substantially radial blades, notched to release a central space into which the end piece of the suction duct penetrates; on the discharge side, the disc carries a set of fins defining a chamber in communication with a duct itself connected to an outside air intake, the duct enclosing the transmission and drive mechanism, with belt connected to a driving pulley , of the rotor.
  • the rotation of the rotor causes not only the aspiration of an air-material mixture, but in parallel, the aspiration of fresh air.
  • This circulation of fresh air can advantageously be used to cool certain organs.
  • the material ejection effect is increased by the overpressure produced by the compression fins, which reduces the rotational speed of the rotor from 5 to 700 rpm, obtaining the same suction effect as with a rotor rotating at 3000 rpm. This results in much less noise and less wear of the moving parts.
  • the outside air flow can be advantageously used to cool the movement transmission members. The material comes into contact with the blades and is ejected towards the periphery by the combination of centrifugal force and vacuum.
  • FIG. 1 there is shown a first embodiment of the invention, which is a vertical section of a pump.
  • a casing 1 Inside which rotates a rotor 2.
  • the casing 1 is connected on the one hand to a material suction pipe 3, substantially in its central part, and on the other part, at its periphery, to a material evacuation pipe 4.
  • the rotor 2 is mounted inside a chamber 5 defined by the casing 1, at the end of a drive shaft 6 supported by bearings 7, and driven by a pulley 8 itself connected by belts 9 to a drive pulley 10.
  • the rotor consists of two discs 11 and 12, between which extend radial blades 13.
  • these blades 13 are notched in their front part, so as to form a suction chamber 14, into which penetrates the end piece of the suction 3.
  • the fins 15 protrude.
  • the fins 15 release, in their central part, a zone 16 corresponding with a conduit 17 which includes, in the example shown, the bearings 7 and l transmission assembly 8, 9, 10.
  • the suction of the air-material mixture through the pipe 3, is done in the direction of the arrow F1, as in the prior art, that is to say that the rotation of the pump creates a vacuum in the chamber 14, a vacuum which sucks the material, the latter being driven back under the influence of the centrifugal force, according to arrow F2 in the evacuation duct 4.
  • the duct 17 opening into the chamber 16 is connected to an outside air intake 18.
  • the outside air is sucked in by the action of the fins 15 when the rotor 2 is rotated. This air undergoes an overpressure, and is evacuated in the evacuation duct 4.
  • the direction of circulation of the compressed air is represented by the arrows F3 and F4, the mixture between the two flows occurring in the outlet pipe 4.
  • the circulation of the air sampled at 18 in the pipe 17 makes it possible to ventilate the pulleys and belts, tensioners and bearings, which reduces the risks of rupture by heating.
  • the number of blades 13 or fins 15 can vary depending on the desired power, from 2 to 6 for example.
  • the rotor has two discs 11 and 12, but the invention can also be implemented with a single disc, as will be shown in the following examples.
  • FIG. 2 shows a rotor made up of a single disc 11, mounted on a shaft 6, and having blades 13 and fins 15, the blades and fins assemblies being in one piece. They can also be bolted to the rotor.
  • the fins 15 are radial fins having an increasing height from the center towards the periphery of the disc 11.
  • the fresh air intake zone 16 is determined by the central parts of the fins 15.
  • FIG. 3 there can be seen, through the discharge opening 4, the rotor 2 in partial view carrying, as in the example shown in FIG. 2, blades 13 and fins 15, on both sides. other of the disc 11.
  • the zone 14 is arranged in the center of the blades 13, the zone 14 being as before, the suction zone, while the compression zone 16 is determined by the central part of the fins 15, the blades and the fins being integral in the example shown. But of course, the number of blades 13 and fins 15 may be different.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Claims (4)

  1. Saugpumpe mit einem Rotor, der im Inneren eines Gehäuses angeordnet ist, welches sowohl mit einer Ansaugleitung als auch mit einer Ablaufleitung verbunden ist und deren Rotor (2) mit einer Welle (6) und mindestens einer Scheibe (11) versehen ist, die auf der Ansaugseite im wesentlichen radiale Schaufeln (13) besitzt, die ausgenommen sind, um einen zentralen Raum freizulassen, in den der Ansatz der Ansaugleitung hereinragt, wobei auf der Auslaßseite (4) die Scheibe mit einem Satz von Flügeln (15) versehen ist, die eine Kammer (16) bilden, die mit einer Leitung (17) in Verbindung stehen, welche ihrerseits mit einer äußeren Lüftungsoffnung (18) verbunden ist und den Treibriemenantriebs- und Übertragungsmechanismus (6, 7, 8, 9) umschließt, der mit der Antriebsriemenscheibe (10) des Rotors (2) verbunden ist.
  2. Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß der Rotor (2) aus einer Scheibe (11) besteht und daß die Schaufeln (13) und die Flügel (15) einstückig mit der Scheibe ausgebildet sind.
  3. Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß der Rotor aus zwei Scheiben (11, 12) aufgebaut ist, daß die Schaufeln (13) zwischen diesen beiden Scheiben (11, 12) eingeschlossen sind und daß die Flügel (15) von der Außenseite der Scheibe (11) abstehen.
  4. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ansaugleitungen (3, 17) in die Auslaßleitung (4) münden.
EP19900400430 1989-02-16 1990-02-16 Saugpumpe Expired - Lifetime EP0383694B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8902014A FR2643118B1 (fr) 1989-02-16 1989-02-16 Pompe d'aspiration
FR8902014 1989-02-16

Publications (2)

Publication Number Publication Date
EP0383694A1 EP0383694A1 (de) 1990-08-22
EP0383694B1 true EP0383694B1 (de) 1994-05-04

Family

ID=9378835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900400430 Expired - Lifetime EP0383694B1 (de) 1989-02-16 1990-02-16 Saugpumpe

Country Status (3)

Country Link
EP (1) EP0383694B1 (de)
DE (1) DE69008574T2 (de)
FR (1) FR2643118B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2964988B1 (fr) 2010-09-20 2012-08-31 Cochet Machine de ramassage par aspiration de dechets, a desaccouplement de turbine
CN102022376B (zh) * 2010-11-05 2012-08-15 聂伟 割草机的抽风机叶轮
DE102018122716B3 (de) * 2018-09-17 2019-12-19 Technische Universität Dresden Förderer für Hackschnitzel und andere Schüttgüter
EP3892862A1 (de) * 2020-04-07 2021-10-13 punker GmbH Lüfterrad

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE436157A (de) *
FR884320A (fr) * 1941-10-25 1943-08-10 Scintilla Sa Procédé de fabrication d'une roue de soufflerie et roue obtenue par ce procédé
GB570820A (en) * 1944-01-24 1945-07-24 Colliery Engineering Ltd Improvements relating to belt-driven cased screw fans
DE1204138B (de) * 1961-08-29 1965-10-28 Heinrich Willy Meierling Dipl Motorisch angetriebenes Geblaese fuer lockeres, langfaseriges Foerdergut mit einem doppelt-wirkenden Laufrad
FR2571587B1 (fr) * 1984-10-17 1987-10-30 Garnot Guy Aspirateur a gazon
DE3670269D1 (de) * 1985-12-17 1990-05-17 Mathias Hirlinger Pneumatische foerdervorrichtung mit einem geblaese zum foerdern von schuettgut, insbesondere heu, stroh oder anderem landwirtschaftlichen gut.

Also Published As

Publication number Publication date
FR2643118A1 (fr) 1990-08-17
DE69008574D1 (de) 1994-06-09
EP0383694A1 (de) 1990-08-22
FR2643118B1 (fr) 1994-04-01
DE69008574T2 (de) 1994-11-24

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