EP1218640B1 - Appareil de nettoyage a haute pression - Google Patents

Appareil de nettoyage a haute pression Download PDF

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Publication number
EP1218640B1
EP1218640B1 EP00967843A EP00967843A EP1218640B1 EP 1218640 B1 EP1218640 B1 EP 1218640B1 EP 00967843 A EP00967843 A EP 00967843A EP 00967843 A EP00967843 A EP 00967843A EP 1218640 B1 EP1218640 B1 EP 1218640B1
Authority
EP
European Patent Office
Prior art keywords
internal gear
cleaning device
pressure cleaning
high pressure
steel alloy
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
EP00967843A
Other languages
German (de)
English (en)
Other versions
EP1218640A1 (fr
Inventor
Peter Scharwaechter
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP1218640A1 publication Critical patent/EP1218640A1/fr
Application granted granted Critical
Publication of EP1218640B1 publication Critical patent/EP1218640B1/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
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • 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
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/027—Pump details

Definitions

  • the invention relates to a high-pressure cleaning device a motor with an internal gear pump driven by the motor to convey a cleaning liquid under high pressure to a discharge device.
  • Such a high-pressure cleaning device is, for example known from DE 197 26 794.
  • the pump parts must therefore place high demands on the Meet corrosion resistance.
  • For internal gear pumps are also high tooth strength and high strength required on the sealing surfaces.
  • the object and the aim of the invention are for high-pressure cleaning devices of the type described above Type with internal gear pumps a material for the gears to find the of the above requirements in terms of corrosion resistance and hardness.
  • This object is achieved in that with a high-pressure cleaning device with an engine, with one of those Motor driven internal gear pump for promotion a cleaning liquid under high pressure to a Discharge device the internal gear and / or the external gear Made of a chromium steel alloy containing molybdenum with a nitrogen content of 0.1 - 1%.
  • chrome steel alloys is even better with a nitrogen content of 0.3 - 1%.
  • the number of process steps for manufacturing the internal gears and / or the external gears is special low if this is exclusively from the invention Alloy. In this case there are no coatings on the sealing surfaces and / or similar processes required.
  • the drive motor can be an electric motor or an internal combustion engine his.
  • a pump is driven by the motor Cleaning liquid from the liquid inlet on the suction side 2 of the high-pressure cleaning device for the pressure side Pumps liquid outlet 3 of the internal gear pump.
  • High-pressure hose 4 connected to the discharge device 5.
  • the internal gear pump can be a fill-less internal gear pump 6, in Figure 2 is the internal gear shown, the tips of which are not shown Tooth heads of the externally toothed internal gear are located at the level of line 7, while the floors the spaces between the teeth of the internal gear external gear are on line 8.
  • the internal gear pump can be of the gerotor type with the drive shaft 9 driven internal gear and fixed Be external gear.
  • the internal gear pump can also be used as a Orbit pump can be designed with the drive shaft 9 driven internal gear and fixed external gear. With an orbital pump, the internal gear moves in a planetary motion around the axis of rotation of the Outdoor gear. It is with such internal gear pumps also known, resulting wear from relative movements the sealing surfaces of the gears perpendicular to their Axes of rotation and thus approximation of the same to each other compensate.
  • the internal gear is rotatable about the axis of rotation 9 stored.
  • an internal gear and external gear of the internal gear pump according to the invention 6 made of a chrome steel alloy with a Chromium content of approx. 15%, a nitrogen content of approx. 0.4% and a molybdenum content of approx. 0.4%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Mechanical Sealing (AREA)
  • Centrifugal Separators (AREA)

Claims (6)

  1. Appareil de nettoyage à haute pression avec un moteur, et avec une pompe à engrenage intérieur entraínée par le moteur et destinée à refouler un liquide de nettoyage sous haute pression vers un équipement de distribution, caractérisé en ce que l'engrenage intérieur et/ou l'engrenage extérieur sont réalisés en un alliage chrome-acier contenant du molybdène, avec une part d'azote de 0,1 à 1 %.
  2. Appareil de nettoyage à haute pression selon la revendication 1, caractérisé en ce que l'engrenage intérieur et/ou l'engrenage extérieur sont réalisés en alliage chrome-acier contenant du molybdène, avec une part d'azote de 0,2 à 1 %.
  3. Appareil de nettoyage à haute pression selon la revendication 1 ou 2, caractérisé en ce que l'engrenage intérieur et/ou l'engrenage extérieur sont réalisés en alliage chrome-acier contenant du molybdène, avec une part d'azote de 0,3 à 1 %.
  4. Appareil de nettoyage à haute pression selon la revendication 1 ou 2, caractérisé en ce que la teneur en molybdène de l'alliage chrome-acier est comprise entre 0,8 et 2 % (en poids).
  5. Appareil de nettoyage à haute pression selon l'une des revendications précédentes, caractérisé en ce que la teneur en chrome de l'alliage est comprise entre 9 et 16 % (en poids).
  6. Appareil de nettoyage à haute pression selon l'une des revendications précédentes, caractérisé en ce que l'engrenage intérieur et/ou l'engrenage extérieur sont exclusivement-constitués de l'alliage selon l'invention.
EP00967843A 1999-10-08 2000-10-06 Appareil de nettoyage a haute pression Expired - Lifetime EP1218640B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19948860 1999-10-08
DE19948860A DE19948860A1 (de) 1999-10-08 1999-10-08 Hochdruckreinigungsgerät
PCT/EP2000/009819 WO2001027476A1 (fr) 1999-10-08 2000-10-06 Appareil de nettoyage a haute pression

Publications (2)

Publication Number Publication Date
EP1218640A1 EP1218640A1 (fr) 2002-07-03
EP1218640B1 true EP1218640B1 (fr) 2003-01-15

Family

ID=7925185

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00967843A Expired - Lifetime EP1218640B1 (fr) 1999-10-08 2000-10-06 Appareil de nettoyage a haute pression

Country Status (8)

Country Link
EP (1) EP1218640B1 (fr)
CN (1) CN1215259C (fr)
AT (1) ATE231219T1 (fr)
AU (1) AU7786200A (fr)
DE (2) DE19948860A1 (fr)
DK (1) DK1218640T3 (fr)
ES (1) ES2189769T3 (fr)
WO (1) WO2001027476A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7556210B2 (en) * 2006-05-11 2009-07-07 S. C. Johnson & Son, Inc. Self-contained multi-sprayer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1270122A (en) * 1969-03-06 1972-04-12 Plessey Co Ltd Improvements in or relating to gear pumps
JPS5837162A (ja) * 1981-08-31 1983-03-04 Toshiba Corp ポンプおよびその製造方法
JPH01246343A (ja) * 1988-03-25 1989-10-02 Daido Steel Co Ltd ステンレス鋼
JPH06336652A (ja) * 1993-05-27 1994-12-06 Agency Of Ind Science & Technol 原子力発電所海水ポンプ用ステンレス鍛鋼
JPH09195004A (ja) * 1995-11-10 1997-07-29 Mitsubishi Heavy Ind Ltd ステンレス鋼
DE19726794A1 (de) 1997-06-24 1999-01-07 Elektra Beckum Ag Wasser-Hochdruckreinigungsgerät
JPH1180911A (ja) * 1997-09-11 1999-03-26 Nippon Steel Corp ポンプインペラ用高純クロム鋼板

Also Published As

Publication number Publication date
CN1378621A (zh) 2002-11-06
CN1215259C (zh) 2005-08-17
DE19948860A1 (de) 2001-04-12
ES2189769T3 (es) 2003-07-16
EP1218640A1 (fr) 2002-07-03
WO2001027476A1 (fr) 2001-04-19
ATE231219T1 (de) 2003-02-15
DE50001121D1 (de) 2003-02-20
DK1218640T3 (da) 2003-02-24
AU7786200A (en) 2001-04-23

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