WO1998007530A1 - Appareil de nettoyage haute pression - Google Patents

Appareil de nettoyage haute pression Download PDF

Info

Publication number
WO1998007530A1
WO1998007530A1 PCT/EP1996/003707 EP9603707W WO9807530A1 WO 1998007530 A1 WO1998007530 A1 WO 1998007530A1 EP 9603707 W EP9603707 W EP 9603707W WO 9807530 A1 WO9807530 A1 WO 9807530A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
cleaning device
pressure cleaning
burner
line
Prior art date
Application number
PCT/EP1996/003707
Other languages
German (de)
English (en)
Inventor
Helmut Gassert
Eberhard Veit
Original Assignee
Alfred Kärcher GmbH & 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 Alfred Kärcher GmbH & Co. filed Critical Alfred Kärcher GmbH & Co.
Priority to PCT/EP1996/003707 priority Critical patent/WO1998007530A1/fr
Publication of WO1998007530A1 publication Critical patent/WO1998007530A1/fr

Links

Classifications

    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled

Definitions

  • the invention relates to a high-pressure cleaning device with a high-pressure pump for a cleaning liquid and with a heat exchanger which comprises a burner for fossil fuels and a helical line through which the cleaning liquid flows and in the interior of which the burner directs the hot combustion gases.
  • Such a high-pressure cleaning device is known for example from DE 30 01 571 C2.
  • a fossil fuel burner for example an oil burner or a gas burner, which directs the flame gases generated into the interior of a cylinder, which is formed by the helically laid liquid line, is preferably used to heat the cleaning liquid conveyed by a high-pressure pump.
  • This object is achieved according to the invention in a high-pressure cleaning device of the type described in the introduction in that the height of the tion formed cylinder is three to seven times the inside diameter of this cylinder, preferably about five times.
  • the inside diameter of the cylinder is between 150 mm and 250 mm, in particular essentially 190 mm.
  • the line in the heat exchanger is guided in the form of a double spiral, with an inner and an outer layer. This also significantly increases the degree of heat transfer.
  • the cylinder formed by the helical line is surrounded on the outside by an annular space through which combustion air is fed to the burner over the length of the cylinder.
  • the large construction height of the cylinder described requires the preheating of the Combustion air, since it is in thermal contact with the cylinder lines over a very long distance and is therefore optimally preheated. This optimal preheating also increases the efficiency of the burner and thus overall the efficiency of the heat exchanger.
  • the opening angle of the combustion gases emitted by the burner is below 45 °, preferably around 30 °. Especially with burners with such small opening angles, there are significant improvements in the degree of heat transfer, since heat transfer also occurs very effectively in areas away from the burner, in which the combustion gases only come into direct contact with the line due to the small opening angle.
  • the burner is a blue burner which generally has a small opening angle and whose heat content can therefore be used particularly advantageously in a region which is relatively distant from the burner.
  • the length of the line in the cylinder is between 12 and 90 m, preferably essentially between 20 m and 40 m.
  • the heat exchanger is preferably installed upright in the high-pressure cleaning device.
  • This standing construction has the advantage of better heat distribution, so that the formation of condensation in the less heated zones is avoided.
  • the heat exchanger shown in Figure 1 is housed in a cylindrical container 1, which is covered on the outside by a hood 2, which extends between the side wall 3 of the container 1 and the side wall 4 of the hood 2, extending over the entire height of the container 1 Forms annulus 5.
  • This annular space 5 opens into an intermediate space 6 between a cover 7 of the container 1 and a cover 8 of the hood 2.
  • a burner 9 for fossil fuels is held in the middle thereof, which projects downwards into the intermediate space 6 and through an opening 10 in the lid 8 into the interior of the container 1 .
  • the opening 10 is surrounded by a funnel-shaped widening baffle plate 12 which is cylindrical at its free end and which projects into the container 1 and which surrounds the burner 9 and the ignition electrode 11.
  • a line 13 enters the container 1; it extends in the interior of the container 1 in the form of two helices 14, 15, the helix 14 having a smaller diameter than the helix 15, so that the two helices 14 and 15 form a two-layer cylinder which essentially comprises the side wall 3 of the container 1 is adjacent and which is arranged outside the baffle 12.
  • the two coils 14 and 15 surround a circular-cylindrical interior 16, which is arranged concentrically with the burner 9 and into which the guide plate 12 is immersed.
  • the coils 14 and 15 are dimensioned such that the height of the cylinder formed by these coils is three to seven times as large as the inside diameter of this cylinder, preferably approximately five times as large.
  • the inside diameter can preferably be between 150 mm and 250 mm, a size of about 190 mm is particularly favorable.
  • a line length of the order of 12 m to 90 m can be accommodated in the heat exchanger; this length is preferably 20 m and 40 m.
  • the burner 9 is selected so that the opening angle of the flame gases emitted by the burner is less than 45 °, preferably approximately 30 °. This results in a relatively slow expansion of the flame gases in the direction of flow, and this means that heat transfer can take place over a long distance, that is to say essentially effectively over the entire height of the cylinder spanned by the two coils 14 and 15.
  • Combustion air is fed through the annular space 5 from the underside via an inlet (not shown), which passes through the annular space 5 into the intermediate space 6 and from there to the burner 9 and which flows is warmed up by the annular space 5. Due to the large height of the container 1 and the coils 14 and 15, this heating of the combustion air takes place over a large distance and is therefore very effective.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Frying-Pans Or Fryers (AREA)

Abstract

L'invention concerne un appareil de nettoyage haute pression comportant une pompe haute pression pour un nettoyant liquide et un échangeur de chaleur comprenant un brûleur (9) pour combustibles fossiles et une conduite (13) hélicoïdale traversée par le nettoyant liquide et dans l'espace intérieur (16) de laquelle le brûleur (9) dirige les gaz de combustion chauds. Afin d'optimiser le transfert de chaleur, il est prévu que la hauteur du cylindre formé par la conduite (13) à travers la conduite (13) hélicoïdale soit comprise entre le triple et le septuple du diamètre intérieur dudit cylindre.
PCT/EP1996/003707 1996-08-22 1996-08-22 Appareil de nettoyage haute pression WO1998007530A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP1996/003707 WO1998007530A1 (fr) 1996-08-22 1996-08-22 Appareil de nettoyage haute pression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1996/003707 WO1998007530A1 (fr) 1996-08-22 1996-08-22 Appareil de nettoyage haute pression

Publications (1)

Publication Number Publication Date
WO1998007530A1 true WO1998007530A1 (fr) 1998-02-26

Family

ID=8166291

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/003707 WO1998007530A1 (fr) 1996-08-22 1996-08-22 Appareil de nettoyage haute pression

Country Status (1)

Country Link
WO (1) WO1998007530A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1255085A3 (fr) * 2001-05-04 2003-10-08 ALTO Deutschland GmbH Echangeur de chaleur avec plusieurs enroulements et méthode pour fabriquer l'échangeur de chaleur
EP1398577A1 (fr) * 2002-09-10 2004-03-17 Alfred Kärcher GmbH & Co. KG Nettoyeur à haute pression
EP1398578A1 (fr) * 2002-09-10 2004-03-17 Alfred Kärcher GmbH & Co. KG Nettoyeur haute pression
EP2080960A2 (fr) 2008-01-18 2009-07-22 Luciano Santi Appareil de production rapide de liquide chaud

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2908030A (en) * 1956-01-19 1959-10-13 Homestead Valve Mfg Co Apparatus for vapor spray cleaning
FR1394394A (fr) * 1964-04-09 1965-04-02 Clayton Manufacturing Co Dispositif permettant de mélanger deux liquides dans des proportions prédéterminées
FR2542854A1 (fr) * 1983-03-18 1984-09-21 Dieppedalle Francois Appareil de production instantanee d'eau chaude a haute pression
EP0248282A2 (fr) * 1986-05-24 1987-12-09 Friedrich Epple GmbH & Co. Hochdruck- und Spezialreinigungsmaschinenfabrik Dispositif de nettoyage à haute pression
FR2602857A1 (fr) * 1986-08-14 1988-02-19 Nibart Jean Clair Echangeur de chaleur fumee/eau pour une chaudiere a combustible gazeux ou liquide pour production d'eau chaude, et corps de chauffe comportant un tel echangeur de chaleur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2908030A (en) * 1956-01-19 1959-10-13 Homestead Valve Mfg Co Apparatus for vapor spray cleaning
FR1394394A (fr) * 1964-04-09 1965-04-02 Clayton Manufacturing Co Dispositif permettant de mélanger deux liquides dans des proportions prédéterminées
FR2542854A1 (fr) * 1983-03-18 1984-09-21 Dieppedalle Francois Appareil de production instantanee d'eau chaude a haute pression
EP0248282A2 (fr) * 1986-05-24 1987-12-09 Friedrich Epple GmbH & Co. Hochdruck- und Spezialreinigungsmaschinenfabrik Dispositif de nettoyage à haute pression
FR2602857A1 (fr) * 1986-08-14 1988-02-19 Nibart Jean Clair Echangeur de chaleur fumee/eau pour une chaudiere a combustible gazeux ou liquide pour production d'eau chaude, et corps de chauffe comportant un tel echangeur de chaleur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1255085A3 (fr) * 2001-05-04 2003-10-08 ALTO Deutschland GmbH Echangeur de chaleur avec plusieurs enroulements et méthode pour fabriquer l'échangeur de chaleur
EP1398577A1 (fr) * 2002-09-10 2004-03-17 Alfred Kärcher GmbH & Co. KG Nettoyeur à haute pression
EP1398578A1 (fr) * 2002-09-10 2004-03-17 Alfred Kärcher GmbH & Co. KG Nettoyeur haute pression
EP2080960A2 (fr) 2008-01-18 2009-07-22 Luciano Santi Appareil de production rapide de liquide chaud

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