WO1993015852A1 - Nettoyeur portatif a haute pression - Google Patents

Nettoyeur portatif a haute pression Download PDF

Info

Publication number
WO1993015852A1
WO1993015852A1 PCT/DK1993/000050 DK9300050W WO9315852A1 WO 1993015852 A1 WO1993015852 A1 WO 1993015852A1 DK 9300050 W DK9300050 W DK 9300050W WO 9315852 A1 WO9315852 A1 WO 9315852A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
pump
pump piston
pressure
piston
Prior art date
Application number
PCT/DK1993/000050
Other languages
English (en)
Inventor
Karl Johan Klitgaard Frandsen
Original Assignee
K.F. Industri A/S
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 K.F. Industri A/S filed Critical K.F. Industri A/S
Publication of WO1993015852A1 publication Critical patent/WO1993015852A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • a portable high-pressure cleaner is provided.
  • the present invention relates to a portable high-pressure cleaner, in particular for hobby purposes, and of the type described in the introductory part of claim 1.
  • high-pressure cleaners For leisure-time or hobby purposes it is known to produce lightweight and compact high-pressure cleaners. However, it is often a question of downward-dimensioned and equipmentwise simplified versions of high-pressure cleaners for professional use, that is to say that known high-pressure cleaners for hobby purposes normally also are encum ⁇ bered with the same disadvantages as high-pressure cleaners for professional use - including a relatively high price. Furthermore, known high-pressure cleaners of this type are relatively heavy units because they either include a conventional petrol engine or an electric motor. In the last-mentioned case in addition to connection to proper elec ⁇ tricity supply a special security system is required because of the connection to water supply.
  • the invention is more precisely related to a portable high-pressure cleaner, which is described in Danish Patent Application No 0724/90 and international application No.
  • PCT/DK91/00080 (WO91/14517), and the purpose of the invention is to provide a portable high-pressure cleaner of the type mentioned introductorily, and which by simple provisions may be given a better and more stable efficiency.
  • the high-pressure cleaner according to the invention is distinctive in that connected to the low-pressure part a stiff water supply connection and an elastic element is present, which element consists of a piece of flexible tube or preferably of an elastic diaphragm being mounted in a side flange.
  • an elastic element is with reference to capacity such adapted, that it exactly gives the necessary filling supplement (0.3 to 0.6 ml); and in respect to the fact that only about 1.2 ml is sucked in per pump stroke, it concerns a considerable filling supplement, which is delivered by the elastic element.
  • the elastic element consists as mentioned preferably of a diaphragm of elastic material, which expediently is stretched tranversely over the side flange by means of a screw with a concave cavity towards a suction chamber, which cavity permits the diaphragm to be stretched outwards during the return stroke (suction stroke) of the hollow pump piston, and swing inwards during the pump stroke.
  • Fig. 1 shows a side view - partly in section - of an embodiment for a high-pressure cleaner according to the invention
  • Fig. 2 shows a view - partly in section - of the high-pressure cleaner shown in Fig. 1 - seen from above,
  • Fig. 3 shows an end view - parly in section - seen from the section line m-E in Fig. 1, and
  • Fig. 4 shows a side sectional view of the preferred embodiment for a pump part to the high-pressure cleaner shown in Fig. 1 - 3 according to the invention.
  • the high-pressure cleaner shown in Figs. 1 - 3 comprises a pump part 4 - shown in a preferred embodiment in Fig. 4 - a crank mechanism 6 and a drive engine in form of a petrol engine 8.
  • the pump part 4 comprises a low-pressure side or part 10 and a high- pressure side or part 12 and a between these placed hollow, tube-shaped pump piston 14, which via a crosshead 16, connecting rods 18 and a crank mechanism 6 is directly drive connected with an engine piston 20 of the petrol engine 8.
  • the pump part 4 also comprises a suction valve 22, a pumping chamber 24, a pressure valve 26 and a discharge nozzle for connection of a jet pipe.
  • the pump piston 14 is opposite the suction valve 22 connected with a cylindrical connecting part 30, being connected with the cross head 16 opposite the pump piston 14.
  • a velocity regulator 40 speeder for the petrol engine 8.
  • the valve flange 34 is connected to the water supply by means of a not shown stiff pipe connection, (which previosly consisted of a flexible tube).
  • a stiff pipe connection which previosly consisted of a flexible tube.
  • the suction chamber 32 opposite the valve flange 34 is provided with a side flange 36, in which an elastic diaphragm 38 is stretched out, which diaphragm is secured by means of a large, short screw 40, which is provided with a concave cavity 42 towards die suction chamber 32, which cavity permitting the dia ⁇ phragm 38 to be pressed inwards die cavity 42.

Landscapes

  • Reciprocating Pumps (AREA)

Abstract

Nettoyeur portatif à haute pression comportant une pompe (4) possédant une chambre de pompage (24) et sa vanne ainsi qu'un dispositif d'aspiration (14, 22, 26) entre une partie à basse pression (10, 32) dans laquelle le milieu pompé, notamment de l'eau, est amené, et une partie à haute pression (14) reliée par un raccordement à décharge à un outil auxiliaire tel qu'un tuyau de décharge, et dotée d'un moteur à combustion interne pour la pompe (4). Ladite vanne comporte une vanne de refoulement à ressort (26) et le dispositif d'aspiration est constitué d'un piston-pompe cylindrique et creux (14) relié directement à un piston moteur (20) et raccordé en permanence à la partie à basse pression (10, 32) par l'intermédiaire d'orifices d'aspiration (65) débouchant dans la cavité du piston-pompe. La vanne comporte également une vanne d'aspiration (22) placée à l'extrémité avant ouverte du piston-pompe, et dotée d'un élément vanne (42) relié au piston-pompe (14) avec suffisamment de liberté de déplacement pour que l'élément vanne (42) ne puisse obturer l'avant du piston-pompe (14) que grâce aux sollicitations dues à l'inertie, lorsque le piston-pompe est déplacé en direction de la chambre de pompage (24) et de la vanne de refoulement (26), et qu'il ne puisse dégager l'avant du piston-pompe (14) que lorsqu'il est déplacé en direction de la partie à basse pression (10). La partie à basse pression (10) est reliée à un raccord rigide d'amenée d'eau et à un élément élastique constitué d'un tube souple ou, de préférence, d'un diaphragme élastique (38) monté dans une bride latérale (36). Ceci permet un remplissage optimisé grâce à un mouvement de pompage renouvelé du piston.
PCT/DK1993/000050 1992-02-17 1993-02-12 Nettoyeur portatif a haute pression WO1993015852A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK20392A DK20392A (da) 1992-02-17 1992-02-17 Baerbar hoejtryksrenser
DK0203/92 1992-02-17

Publications (1)

Publication Number Publication Date
WO1993015852A1 true WO1993015852A1 (fr) 1993-08-19

Family

ID=8090912

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1993/000050 WO1993015852A1 (fr) 1992-02-17 1993-02-12 Nettoyeur portatif a haute pression

Country Status (3)

Country Link
AU (1) AU3493393A (fr)
DK (1) DK20392A (fr)
WO (1) WO1993015852A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3446156A (en) * 1966-11-17 1969-05-27 Cosmodyne Corp The Differential pressure poppet valve
WO1991014517A1 (fr) * 1990-03-20 1991-10-03 K.F. Industri A/S Nettoyeur portable a haute pression
US5061159A (en) * 1990-08-27 1991-10-29 Pryor Dale H Fluid end for reciprocating pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3446156A (en) * 1966-11-17 1969-05-27 Cosmodyne Corp The Differential pressure poppet valve
WO1991014517A1 (fr) * 1990-03-20 1991-10-03 K.F. Industri A/S Nettoyeur portable a haute pression
US5061159A (en) * 1990-08-27 1991-10-29 Pryor Dale H Fluid end for reciprocating pump

Also Published As

Publication number Publication date
DK20392A (da) 1993-08-18
AU3493393A (en) 1993-09-03
DK20392D0 (da) 1992-02-17

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