WO2000045967A1 - Appareil de nettoyage haute pression - Google Patents

Appareil de nettoyage haute pression Download PDF

Info

Publication number
WO2000045967A1
WO2000045967A1 PCT/EP1999/010023 EP9910023W WO0045967A1 WO 2000045967 A1 WO2000045967 A1 WO 2000045967A1 EP 9910023 W EP9910023 W EP 9910023W WO 0045967 A1 WO0045967 A1 WO 0045967A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
temperature
cleaning device
burner
pressure cleaning
Prior art date
Application number
PCT/EP1999/010023
Other languages
German (de)
English (en)
Inventor
Bohumir Svoboda
Helmut Komp
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 AT99968347T priority Critical patent/ATE305338T1/de
Priority to EP99968347A priority patent/EP1146970B1/fr
Priority to DE59912608T priority patent/DE59912608D1/de
Publication of WO2000045967A1 publication Critical patent/WO2000045967A1/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

Definitions

  • the invention relates to a high-pressure cleaning device according to the preamble of claim 1.
  • a generic high-pressure cleaning device is described, for example, in the operating instructions for the device HDS 995 from Alfred Kärcher GmbH & Co.
  • the desired liquid temperature is set via two separate control devices.
  • the one control device is used to adjust the amount of liquid delivered
  • the other control device is used to adjust the threshold value of the control circuit of the burner.
  • the control circuit of the burner is set so that the burner switches off when the desired liquid temperature is reached, which is measured via a temperature sensor at the outlet of the heating coil, and switches on again when the desired liquid temperature is undershot.
  • the burner Since the heat output is not adjustable when using a burner in the continuous-flow heater, the burner must be designed so that it can heat the liquid to a working temperature of 80 ° C. with the maximum amount of liquid conveyed (for example 1000 l / h).
  • the threshold value for switching off the burner to the desired temperature is to be increased at the device provided for the temperature setting and the amount of liquid conveyed is reduced at the corresponding control device for the delivery rate.
  • the delivery rate In order to achieve optimal, as uninterrupted operation of the burner as possible, the delivery rate must be set so that the heat generated by the burner constantly heats the liquid to the desired temperature. With this optimal setting, the burner operates without interruption and therefore burns under optimal temperature conditions.
  • this optimum setting value for the delivery rate is often not reached, for example because the person operating the high-pressure cleaning device is not aware of the relationship or because there is no time to optimally set the delivery rate.
  • the burner switches on and off frequently, so that it becomes slightly sooty and requires frequent maintenance. If there is set too high against the flow rate, the burner runs continuously without actually reaching the temperature set on the thermostat. The operator can therefore not be sure whether the working temperature set on the temperature selection switch actually corresponds to the temperature of the cleaning liquid.
  • DE 87 16 070 U describes a combined liquid and oil pump.
  • the combination of a quantity-controlled overflow valve in the liquid line is coupled with an overflow valve in the fuel delivery line that is controlled as a function of the high-pressure liquid delivered.
  • the regulation of the burner output for the amount of fuel delivered is, however, very complex to implement, since the amount of combustion air has to be changed depending on the amount of fuel delivered. However, this has the consequence that the burner must be designed in a range of different operating states. However, this alone is associated with very complex series of measurements, since the burner must comply with the legally prescribed exhaust gas values in every operating state.
  • the object of the present invention is to develop a generic high-pressure cleaning device in such a way that economical heating of the liquid in one possible, as simple as possible for the operator large temperature range is reached, while ensuring that the high-pressure cleaning device is as simple as possible.
  • a high-pressure cleaning device initially has a control device for setting the delivery rate of the liquid under high pressure, a continuous-flow heater for optionally heating the liquid and a temperature control for the liquid temperature, and a temperature sensor for measuring the liquid temperature of the conveyed liquid shortly before it emerges in a discharge device.
  • Both the setting values of the flow rate control and those of the temperature control of the liquid can be entered together and simultaneously via a single setting element. This eliminates the problem for the person operating the device that different setting elements have to be set separately to achieve a desired liquid temperature, as was still necessary in the prior art.
  • the control of the instantaneous water heater is addressed on the one hand and, at the same time, the amount of water is continuously reduced by means of the amount of water control, so that the temperature can be increased proportionally to the reduction in the amount of water in accordance with the amount of heat supplied in the instantaneous heater.
  • the setting member preferably has different setting ranges.
  • the liquid under high pressure can be heated to a desired temperature while maintaining the maximum flow rate.
  • This value is entered via the setting element and the threshold value of the burner control for switching off the burner is raised accordingly. This type of control can take place until a predetermined liquid temperature is reached.
  • This liquid temperature can be advantageous approx. 80 ° C.
  • the threshold value of the burner control for switching off the burner is further increased in a second setting range, while at the same time the quantity of liquid delivered is continuously reduced to a predetermined limit value.
  • This limit value for reducing the amount of liquid is advantageously about half of the largest possible delivery rate. A further lowering would lead to an insufficient delivery rate of the liquid escaping under high pressure.
  • the setting member additionally has an on or off for switching the high pressure pump for the liquid on and off.
  • a setting member according to the invention very particularly advantageously consists of a rotary switch.
  • the operator can switch on the high-pressure cleaning device with one hand, i.e. First switch on the high-pressure pump to deliver the liquid under high pressure, and set the desired liquid temperature (one-hand operation).
  • Fig. 1 a schematic representation of a high-pressure cleaning device according to the invention
  • FIG. 2 an exemplary representation of an adjusting element of the high-pressure cleaning device according to FIG. 1.
  • a high pressure cleaning device 10 is shown schematically.
  • the cleaning liquid is conveyed in the direction of arrow a under low pressure into a line system 12, via which the cleaning liquid is fed to an axial piston pump 14 serving as a high-pressure pump.
  • the axial piston pump 14 is a Drive motor 16 driven. Downstream of the axial piston pump is an overflow valve 18 which serves to regulate the amount of liquid.
  • the line system opens into a heat exchanger 20 in which an oil burner 22 for heating the cleaning liquid is integrated.
  • a temperature sensor 24 for measuring the liquid temperature is arranged at the end of the heat exchanger.
  • the cleaning liquid heated to the desired temperature is then fed to a discharge device 26 in the direction of arrow b.
  • a rotary switch 30 which serves as an adjusting element for the high-pressure cleaning device 10.
  • the rotary switch 30 is a combination switch. On the one hand, it serves to switch the high-pressure cleaning device on and off, i.e. for switching the drive motor 16 of the high-pressure pump 14 on and off (cf. FIG. 1) and secondly for setting the desired temperature of the high-pressure cleaning liquid.
  • the display of the hand switch 30, which can be rotated in the direction of arrow c or in the opposite direction, is denoted by 0.
  • the number I indicates the position for the switched-on motor 16. In position II, the burner 22 (see FIG. 1) is switched on and in the temperature range up to 80 ° C.
  • the frequency of the switching on and off of the burner is varied via the temperature control in order to reach the desired temperature with a constant high amount of liquid. If the rotary switch 30 is turned beyond the limit value of 80 ° C. into a higher temperature range, the temperature control for the liquid and the flow rate control for the amount of liquid delivered are addressed simultaneously. Depending on the operating level, i.e. depending on whether the oil burner 22 is switched on or off, the amount of water during cold water operation is reduced and / or the temperature is increased continuously.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Mechanical Sealing (AREA)
  • Centrifugal Separators (AREA)
  • Cleaning In General (AREA)

Abstract

Cette invention concerne un appareil de nettoyage haute pression (10) comprenant un dispositif de régulation permettant de régler le débit d'expulsion du liquide sous pression, un chauffe-eau instantané (20) pour le chauffage facultatif du liquide, un dispositif de régulation de la température du liquide, et un capteur de température destiné à mesurer la température du liquide transporté, juste avant son expulsion dans une direction donnée (26). Selon l'invention, les valeurs de réglage correspondant au débit et à la température du liquide peuvent être introduites simultanément par l'intermédiaire d'un seul organe de réglage (30). Grâce à ce système, on dispose d'un appareil de nettoyage haute pression particulièrement facile à utiliser.
PCT/EP1999/010023 1999-02-05 1999-12-16 Appareil de nettoyage haute pression WO2000045967A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT99968347T ATE305338T1 (de) 1999-02-05 1999-12-16 Hochdruckreinigungsgerät
EP99968347A EP1146970B1 (fr) 1999-02-05 1999-12-16 Appareil de nettoyage haute pression
DE59912608T DE59912608D1 (de) 1999-02-05 1999-12-16 Hochdruckreinigungsgerät

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904789.8 1999-02-05
DE19904789A DE19904789A1 (de) 1999-02-05 1999-02-05 Hochdruckreinigungsgerät

Publications (1)

Publication Number Publication Date
WO2000045967A1 true WO2000045967A1 (fr) 2000-08-10

Family

ID=7896596

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/010023 WO2000045967A1 (fr) 1999-02-05 1999-12-16 Appareil de nettoyage haute pression

Country Status (5)

Country Link
EP (1) EP1146970B1 (fr)
AT (1) ATE305338T1 (fr)
DE (2) DE19904789A1 (fr)
DK (1) DK1146970T3 (fr)
WO (1) WO2000045967A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20154286A1 (it) * 2015-10-09 2017-04-09 Ip Cleaning S R L Idropulitrice ad acqua calda con controllo della temperatura
CN111468458A (zh) * 2020-04-26 2020-07-31 盐城博尔福机电科技发展有限公司 一种高压清洗机的智能控制方法
EP3943202A1 (fr) 2020-07-09 2022-01-26 IP Cleaning S.r.l. Nettoyeur à eau chaude avec contrôle de température

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007034910B4 (de) * 2007-07-24 2015-02-19 Dynajet GmbH Hochdruckreinigungsgerät

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0265974A1 (fr) * 1986-09-26 1988-05-04 GORLA APPALTI S.p.A. Appareil mobile pour nettoyer et laver des surfaces au moyens d'un jet d'eau chaude sous pression
DE3823320A1 (de) * 1988-07-09 1990-01-11 Suttner Gmbh & Co Kg Hochdruckreinigungseinrichtung
FR2721539A1 (fr) * 1994-06-24 1995-12-29 Vetrella Spa Appareil de nettoyage multifonctionnel.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0265974A1 (fr) * 1986-09-26 1988-05-04 GORLA APPALTI S.p.A. Appareil mobile pour nettoyer et laver des surfaces au moyens d'un jet d'eau chaude sous pression
DE3823320A1 (de) * 1988-07-09 1990-01-11 Suttner Gmbh & Co Kg Hochdruckreinigungseinrichtung
FR2721539A1 (fr) * 1994-06-24 1995-12-29 Vetrella Spa Appareil de nettoyage multifonctionnel.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20154286A1 (it) * 2015-10-09 2017-04-09 Ip Cleaning S R L Idropulitrice ad acqua calda con controllo della temperatura
WO2017060852A1 (fr) * 2015-10-09 2017-04-13 Ip Cleaning S.P.A. Appareil de nettoyage à eau chaude avec régulation de température
CN111468458A (zh) * 2020-04-26 2020-07-31 盐城博尔福机电科技发展有限公司 一种高压清洗机的智能控制方法
EP3943202A1 (fr) 2020-07-09 2022-01-26 IP Cleaning S.r.l. Nettoyeur à eau chaude avec contrôle de température

Also Published As

Publication number Publication date
EP1146970A1 (fr) 2001-10-24
DK1146970T3 (da) 2005-11-14
EP1146970B1 (fr) 2005-09-28
DE59912608D1 (de) 2005-11-03
ATE305338T1 (de) 2005-10-15
DE19904789A1 (de) 2000-08-17

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