EP0978329B1 - Dampf- und Wasserwaschgerät - Google Patents

Dampf- und Wasserwaschgerät Download PDF

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Publication number
EP0978329B1
EP0978329B1 EP99115360A EP99115360A EP0978329B1 EP 0978329 B1 EP0978329 B1 EP 0978329B1 EP 99115360 A EP99115360 A EP 99115360A EP 99115360 A EP99115360 A EP 99115360A EP 0978329 B1 EP0978329 B1 EP 0978329B1
Authority
EP
European Patent Office
Prior art keywords
washing device
water
control unit
washing
boiler
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
EP99115360A
Other languages
English (en)
French (fr)
Other versions
EP0978329A2 (de
EP0978329A3 (de
Inventor
Stefano Sassi
Virginio Sassi
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.)
R E A SNC Di Sassi E Baudin and C
Original Assignee
R E A SNC Di Sassi E Baudin and C
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 R E A SNC Di Sassi E Baudin and C filed Critical R E A SNC Di Sassi E Baudin and C
Publication of EP0978329A2 publication Critical patent/EP0978329A2/de
Publication of EP0978329A3 publication Critical patent/EP0978329A3/de
Application granted granted Critical
Publication of EP0978329B1 publication Critical patent/EP0978329B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2230/00—Other cleaning aspects applicable to all B08B range
    • B08B2230/01—Cleaning with steam

Definitions

  • the present invention relates to a steam and water washing device.
  • the invention refers to an electronic control system which controls the operation of a washing device provided with a resistor heated boiler for generating steam.
  • a washing device of said type is disclosed for example in European Patent Application EP 0 832 696, in the name of the same applicant.
  • the electric heated boilers used for generating steam need, for a proper operation, a very accurate control of the water level and of the temperature and steam pressure values.
  • US 4,217,924 discloses a steam and water washing device comprising a tank for holding a liquid and a pump for delivering said liquid to a boiler for generating steam. Control elements are included for controlling operation of the boiler responsive to flow of liquid to the boiler and to temperature of fluid discharged from the boiler.
  • the level regulators for liquids used in boilers are normally provided with two probes, a first one for the minimum level and a second one or the maximum level, and commutate an electric contact or a relay when the minimum or maximum level is reached.
  • the electric contact actuates alternatively a pump for pumping water into the boiler or the resistor for heating the water, so that, for safety, the resistor is always switched off when the water level is below the minimum level or the boiler is filling.
  • a first object of the present invention it is therefore to provide a washing device having a boiler provided with a full electronic control which allows, at low costs, to reach high performances, normally typical of larger washing devices.
  • the washing device according to the invention can advantageously be used in all applications wherein it is necessary to have available a high and continuous washing capacity, therefore without interruptions during operation, still maintaining reduced dimensions and costs.
  • a boiler 1 for producing steam is provided with an electric heating resistor 12, pressure and temperature sensors 11, a water level sensor 8 and a solenoid valve 28 for controlling the steam outlet.
  • the boiler 1 receives water, by means of a first electric pump 3, from a main tank 2.
  • a washing handgrip 4 receives the steam from the boiler 1 through a first flexible tube 5 and receives, through a second flexible tube 6, a washing liquid forced by a second electric pump 7, coming from a second tank 27.
  • the tank 27 can therefore contain whichever washing liquid, separately from the main container 2 which always contains water.
  • the handgrip 4 provided with a nozzle as the steam outlet and with a nozzle for washing with a liquid under pressure, further comprises control means 24, 25 for selecting various functions or operating programs for the device.
  • An electronic control unit 13 to which are connected all the electric connections of the device, schematically shown in Figure 1 as short dashes lines, controls the operation of the washing device, according to the signals coming from sensors and to commands received by control means 24, 25.
  • the control means integrated in the handgrip comprise a rotating switch 24, coupled to a control 5 roller operable from the outside of the handgrip, for selecting various washing types or programs, and a switch or a push button 25 for enabling/disabling the desired function.
  • the control means 24, 25 can be connected to the control unit 13 by means of a plurality of electric conductors, or, preferably, by means of radio-control circuit, incorporated into the handgrip 4, which transmits coded radio signals to a receiver coupled to the electronic control unit 13.
  • control unit 13 The main functions of the control unit 13 are therefore to maintain constant the water level, the temperature and the pressure into the boiler, to activate the solenoid valve 28 for the steam exit and activate the electric pumps 3 and 7.
  • the probe 8 used for detecting the water level in the boiler comprises two rods, a short one 9 and a long one 10, corresponding respectively to maximum and minimum levels allowed in the boiler, which are connected to corresponding signal inputs of the control unit 13.
  • the signal coming from the short rod 9 is used by the unit 13 for activating the electric pump 3, immediately restoring the correct level when the water goes down that level.
  • the main tank 2 is provided with a sensor 23, connected to the electronic control unit 13, which detects the presence of water in the tank and allows to interrupt the operation of the device if the water is missing.
  • the sensor 11 is a pressure and/or temperature sensor for the steam in the boiler and allows to the control unit 13 to maintain said values constant, switching on or off the resistor 12, during the normal operating phases of the device.
  • the secondary tank 27, for safety, is as well provided with a sensor 26, which allows the control unit 13 to inhibit the operation of the second electric pump 7 in case of absence of liquid in the tank, and to advise the operator with an acoustic/lighted signal.
  • figure 2 it is shown a second embodiment of the steam and water washing device according to the present invention.
  • the device of figure 2 differs from the device described above only in the secondary tank which. contains the washing detergent liquid.
  • the washing liquid, forced by the second pump 7, is obtained mixing the water coming from the main tank 2 with a concentrated detergent contained in a suitable small tank 14.
  • the detergent inflow is controlled by the electronic control unit 13 by means of a solenoid valve 17.
  • Two further tanks 15 and 16 having small dimensions, can contain other types of detergent, so allowing various washing kinds simply selecting the desired program on the handgrip 4 controls.
  • the tanks 15 and 16 are also provided with solenoid valves 18, 19 controlled by the control unit 13.
  • All three tanks 14, 15 and 16 moreover are provided with sensors 20, 21 and 22 which detect the absence of detergent activating an alert signal.
  • the main tank 2 in this case must contain more water and must be consequently larger compared to that of figure 1.
  • This second embodiment allows to have more flexibility in washing cycles maintaining unchanged the overall dimensions of the device.
  • FIG. 3 shows a block diagram of the control unit 13 together with the sensors and the main electrical parts connected thereto.
  • All the sensors used in the device are connected to an input buffer 31 which transfer the corresponding signals to a micro-controller 30 comprising a processing unit or CPU, non volatile memories containing program instructions and RAM memories.
  • the signals coming from the micro-controller 30 are transferred to a power interface 32 which controls directly, by means of electronic power switches, the resistor 12, the pumps 3 and 7 and the solenoid valves 17, 18, 19 and 28.
  • the control unit 13 can also be provided with one or more auxiliary power outputs suitable for controlling devices external to the washing device but frequently used during washing operations. For example it is possible to activate, by means of the handgrip controls and therefore without interrupting the washing operation, a liquid aspirator or similar suction devices.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)
  • Devices For Medical Bathing And Washing (AREA)

Claims (12)

  1. Waschgerät unter Verwendung von Dampf und Wasser unter Hochdruck, das folgendes umfaßt:
    mindestens einen Haupttank (2) für Wasser,
    einen Boiler (1) zur Erzeugung von Dampf mit einem elektrischen Heizwiderstand (12), Druck- und Temperaturfühlern (11), Wasserstandsfühlern (8) sowie ein Magnetventil (28) zur Steuerung des Dampfauslasses,
    eine erste elektrische Pumpe (3) zur Förderung von Wasser vom Haupttank (2) zum Boiler (1),
    einen Waschhandgriff (4), der mittels flexibler Rohre (5, 6) zur Aufnahme von Dampf an den Boiler (1) und an eine zweite elektrische Pumpe (7) zur Aufnahme von unter Druck stehendem Wasser angeschlossen ist,
    dadurch gekennzeichnet, daß es eine elektronische Steuereinheit (13) aufweist, die den von den Sensoren und von den in den Waschhandgriff (4) integrierten Steuermitteln kommenden Signalen gemäß die Auswahl verschiedener Wascharten oder Waschprogramme steuert, sowie zum Aktivieren/Desaktivieren der gewählten Funktion, dem Betrieb des gesamten Waschgeräts einschließlich der Einhaltung der korrekten Werte von Temperatur und Druck im Boiler, dem Betrieb des Magnetventils (28) für den Dampfauslaß und dem Betrieb der elektrischen Pumpen (3, 7).
  2. Waschgerät nach Anspruch 1, bei dem die Steuermittel (24, 25) im Handgriff mit einem Schalter (24) zur Auswahl verschiedener Wascharten oder Waschprogramme und mit einem Schalter oder Drucktaster (25) zum Aktivieren/Desaktivieren der gewählten Funktion versehen sind.
  3. Waschgerät nach Anspruch 2, bei dem der Schalter (24) ein vielpoliger Drehschalter ist, der mit einer von außerhalb des Handgriffs betätigbaren drehbaren Steuerscheibe gekoppelt ist.
  4. Waschgerät nach Anspruch 1, bei dem die Steuermittel (24, 25) mittels einer Vielzahl von elektrischen Leitungen mit der elektronischen Steuerung verbunden sind.
  5. Waschgerät nach Anspruch 1, bei dem die Steuermittel (24, 25) einen Funksteuerkreis aufweisen, der codierte Funksignale an einem Empfänger (33) übermittelt, der mit der elektronischen Steuereinheit (13) verbunden ist.
  6. Waschgerät nach Anspruch 1, bei dem der Wasserstandsfühler (8) im Boiler zwei Stäbe, einen kurzen (9) und einen langen (10) aufweist, die dem im Boiler zulässigen maximalen und minimalen Wasserstand entsprechen, mit den entsprechenden Signaleingängen der Steuerungseinheit (13) verbunden sind und bei dem die Steuerungseinheit die erste Pumpe (3) aktiviert, wenn der Wasserstand unter den kurzen Stab (9) abfällt während sie den elektrischen Heizwiderstand (12) deaktiviert, wenn der Wasserstand unter den langen Stab (10) abfällt.
  7. Waschgerät nach Anspruch 1 mit einem zur Aufnahme einer Waschflüssigkeit wie Wasser oder mit einem mit Wasser gemischten Reinigungsmittel geeigneten Sekundärtank (27), der mit dem Saugschlauch der zweiten Pumpe (7) gekuppelt ist.
  8. Waschgerät nach Anspruch 7, bei dem der Sekundärtank (27) mit einem an die elektronische Steuerungseinheit (13) angeschlossenen Sensor (26) ausgestattet ist, der das Vorhandensein von Flüssigkeit im Tank ermittelt und bei Flüssigkeitsmangel die Betriebsunterbrechung der zweiten Elektropumpe (7) ermöglicht.
  9. Waschgerät nach Anspruch 1 mit einem oder mehreren, für die Aufnahme verschiedener Reinigungsmittel geeigneten Sekundärtanks (14, 15, 16), die kleiner als der Haupttank (2) und mittels Magnetventilen (17, 18, 19) an den Auslaß des Haupttanks (2) und an den Saugschlauch der zweiten Pumpe (7) angeschlossen sind.
  10. Waschgerät nach Anspruch 9, bei dem die Magnetventile (17, 18, 19) der Sekundärtanks nach den von den Steuermitteln (24, 25) empfangenen Steuersignalen von der elektronischen Steuereinheit (13) gesteuert werden.
  11. Waschgerät nach Anspruch 1, bei dem der Haupttank (2) mit einem an die elektronische Steuereinheit (13) angeschlossenen Sensor (23) versehen ist, der das Vorhandensein von Wasser im Tank ermittelt und es ermöglicht, den Betrieb des Gerätes selbst im Falle von Wassermangel zu unterbrechen.
  12. Waschgerät nach Anspruch 1, bei dem die elektronische Steuereinheit (13) mittels einer Hilfsausgangsleistung eine leistungsfähige Saugeinrichtung aktivieren kann.
EP99115360A 1998-08-06 1999-08-04 Dampf- und Wasserwaschgerät Expired - Lifetime EP0978329B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998TO000684A IT1303211B1 (it) 1998-08-06 1998-08-06 Macchina per lavaggio con vapore e acqua
ITTO980684 1998-08-06

Publications (3)

Publication Number Publication Date
EP0978329A2 EP0978329A2 (de) 2000-02-09
EP0978329A3 EP0978329A3 (de) 2000-04-19
EP0978329B1 true EP0978329B1 (de) 2003-04-23

Family

ID=11416980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99115360A Expired - Lifetime EP0978329B1 (de) 1998-08-06 1999-08-04 Dampf- und Wasserwaschgerät

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EP (1) EP0978329B1 (de)
AT (1) ATE238109T1 (de)
DE (1) DE69907089T2 (de)
ES (1) ES2197555T3 (de)
IT (1) IT1303211B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430537A (zh) * 2011-12-09 2012-05-02 山东新华医疗器械股份有限公司 蒸汽清洗蒸发器装置

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10033339A1 (de) * 2000-07-08 2002-01-24 Henkel Ecolab Gmbh & Co Ohg Verfahren und Anlage zum Reinigen und/oder Desinfizieren von harten Oberflächen mit einem Schaum
DE10131644A1 (de) * 2001-06-29 2003-01-16 Kaercher Gmbh & Co Alfred Flüssigkeitsabgabeeinrichtung für ein Hochdruckreinigungsgerät
DE10209465A1 (de) * 2002-03-05 2003-10-02 Cleanmax Ag, Au Modul für Reinigungsgeräte
DE102004052198B4 (de) * 2004-10-20 2006-11-09 Alfred Kärcher Gmbh & Co. Kg Dampfreinigungsgerät
US20060102206A1 (en) * 2004-11-15 2006-05-18 Nilfisk-Advance, Inc. Treatment solution injection system
ITMO20050280A1 (it) * 2005-10-26 2007-04-27 Lavorwash Spa Apparato pulitore
WO2014012578A1 (de) * 2012-07-17 2014-01-23 Alfred Kärcher Gmbh & Co. Kg Dampfgerät, insbesondere dampfreinigungsgerät oder dampfbügeleisen
ITGE20130036A1 (it) * 2013-04-02 2014-10-03 Longhi Appliances S R L Divis Ione Commercia De "apparecchio pulitore ad azione combinata acqua e vapore"
DE102014106468A1 (de) * 2014-05-08 2015-11-12 Alfred Kärcher Gmbh & Co. Kg Dampfreinigungsgerät
IT202000007957A1 (it) * 2020-04-15 2021-10-15 Prencipe Francesco Bruni Dispositivo di disinfezione o sanificazione per ambienti o aria

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217924A (en) * 1977-12-08 1980-08-19 Finger John F Cleaning system having steam and water mixing ejector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430537A (zh) * 2011-12-09 2012-05-02 山东新华医疗器械股份有限公司 蒸汽清洗蒸发器装置

Also Published As

Publication number Publication date
ITTO980684A0 (it) 1998-08-06
ES2197555T3 (es) 2004-01-01
ATE238109T1 (de) 2003-05-15
EP0978329A2 (de) 2000-02-09
DE69907089D1 (de) 2003-05-28
ITTO980684A1 (it) 2000-02-06
IT1303211B1 (it) 2000-11-02
EP0978329A3 (de) 2000-04-19
DE69907089T2 (de) 2004-02-26

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