EP1459675A1 - Lave-vaisselle avec groupe capteurs dans la cuve - Google Patents

Lave-vaisselle avec groupe capteurs dans la cuve Download PDF

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Publication number
EP1459675A1
EP1459675A1 EP03425179A EP03425179A EP1459675A1 EP 1459675 A1 EP1459675 A1 EP 1459675A1 EP 03425179 A EP03425179 A EP 03425179A EP 03425179 A EP03425179 A EP 03425179A EP 1459675 A1 EP1459675 A1 EP 1459675A1
Authority
EP
European Patent Office
Prior art keywords
mobile wall
dishwasher
actuator
dishwasher according
sensors
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.)
Withdrawn
Application number
EP03425179A
Other languages
German (de)
English (en)
Inventor
Ezio Gobbi
Marco Righetti
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.)
Bonferraro SpA
Original Assignee
Bonferraro SpA
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 Bonferraro SpA filed Critical Bonferraro SpA
Priority to EP03425179A priority Critical patent/EP1459675A1/fr
Publication of EP1459675A1 publication Critical patent/EP1459675A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4246—Details of the tub
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/46—Devices for the automatic control of the different phases of cleaning ; Controlling devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices

Definitions

  • the present invention relates to dishwashing machines, and in particular to a dishwasher in which various sensors are gathered in a sensor group located in the washing tank.
  • dishwashers are more and more provided with different types of sensors to allow them to carry out "automatic" washing cycles, i.e. washing cycles selected by the control unit of the machine among the various combinations available according to the actual working conditions of the machine, reducing to a minimum the setting by the user.
  • the sensors are used to detect at each cycle various parameters such as type and amount of dirt, entering water hardness, etc. which are the information required to consequently adapt the various working parameters (temperature, amount of water, number of water loads, cycle duration, etc.).
  • the sensors allow the selection among the various washing solutions to adapt the latter to the number and type of dishes to be washed, for example by setting low temperature cycles, or power recovery cycles, or by feeding one sprinkler only and so on.
  • the commonly used sensors in order to operate properly, in general must be immersed in the washing liquid and the liquid itself must be (at the time of the "reading") almost at rest. As a consequence, the sensors are arranged in areas of the hydraulic circuit where the flow is not turbulent or, if they are directly located inside the washing liquid passage ducts, at the time of the reading it is necessary to slow down or stop for some seconds the washing pump.
  • the sensors can not be inspected, whereby it can not be excluded that a soiling takes place over time which eventually causes the detection of wrong data, of which the user may hardly be aware and to which in any case he could not directly see himself.
  • the object of the present invention is to provide a dishwasher which overcomes the above-mentioned drawbacks.
  • a first advantage of the dishwasher according to the present invention is that of concentrating the sensors in a single area of the machine, thus simplifying the construction and reducing the costs.
  • a second significant advantage of this dishwasher is that of providing an automatic cleaning of the outer surface of the sensors at each cycle, so as to guarantee their efficiency over time.
  • a further advantage of this type of machine stems from the fact that the sensor group can be easily inspected even by the user, who can check the condition of the surfaces and possibly see to an additional manual cleaning.
  • the sensor group of the dishwasher according to the invention conventionally includes a control unit U connected through suitable wiring to a plurality of sensors, in the illustrated case two pairs of sensors S, S'.
  • the novel aspect of the present dishwasher is given by the fact that said sensors S, S' are housed in a body C provided with a top opening F and with a front mobile wall M which can open or close a bottom opening D by rotating around horizontal pins R.
  • body C is provided with a gasket G on the three sides along which the mobile wall M abuts, said wall being biased on body C by torsion springs T arranged around pins R.
  • the contact between the mobile wall M and gasket G is prevented by a central pusher P whose position is defined by an electro actuator E which is in turn controlled by the control unit U.
  • pusher P is kept in the extracted position of fig.2 by a spring having a strength greater than the torsion springs T which tend to close the mobile wall M on body C.
  • Body C is arranged on one of the four vertical walls of the washing tank, preferably on the door a little higher than the upper sprinkler J as illustrated in figs.5 and 6, and the mobile wall M usually maintains a substantially vertical position due to the extracted position of pusher P. In this way the water can freely pass through the sensor group and also the end jet X of sprinkler J can wash the inside of body C by entering through the bottom opening D (fig.6).
  • electro actuator E releases pusher P and wall M is pushed back to the vertical position, thus allowing the discharge of the washing liquid W and facilitating the washing of sensors S, S' by the jets of sprinkler J.
  • the above-described and illustrated embodiment of the dishwasher according to the invention is just an example susceptible of various modifications.
  • the number, type and arrangement of the sensors inside body C can be somewhat changed, and body C itself can be arranged in other positions in the washing tank as long as it receives a sufficient amount of water to wash the sensors and to create a temporary stagnation area for the liquid in order to detect the required parameters.
  • the opening and closing mechanism of the water collecting space can be made in other ways, for example by reversing the above-illustrated mechanism.
  • the mobile wall M might be elastically biased away from body C and electro actuator E could be activated to push wall M against body C.
  • wall M could be a laterally sliding wall which, under the push of the electro actuator overcoming the resistance of the spring biasing wall M open, closes the sides and bottom of body C which is normally completely open.
  • the spring could be present on pusher P only which in turn keeps wall M open, and the activation of electro actuator E could cause the closing of wall M through a bidirectional restraint, e.g. a crank mechanism.
  • electro actuator E itself could be replaced by another type of actuator, e.g. hydraulic or pneumatic, suitable to lock the pusher both in the extracted and retracted position, so that there would be no need for springs neither on pusher P nor on the mobile wall M.
  • actuator E e.g. hydraulic or pneumatic
EP03425179A 2003-03-21 2003-03-21 Lave-vaisselle avec groupe capteurs dans la cuve Withdrawn EP1459675A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03425179A EP1459675A1 (fr) 2003-03-21 2003-03-21 Lave-vaisselle avec groupe capteurs dans la cuve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03425179A EP1459675A1 (fr) 2003-03-21 2003-03-21 Lave-vaisselle avec groupe capteurs dans la cuve

Publications (1)

Publication Number Publication Date
EP1459675A1 true EP1459675A1 (fr) 2004-09-22

Family

ID=32799222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03425179A Withdrawn EP1459675A1 (fr) 2003-03-21 2003-03-21 Lave-vaisselle avec groupe capteurs dans la cuve

Country Status (1)

Country Link
EP (1) EP1459675A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3266358A1 (fr) * 2016-07-07 2018-01-10 Sanhua AWECO Appliance Systems GmbH Lave-vaisselle comportant un bloc détecteur destiné à déterminer un mouvement rotatif d'un bras de pulvérisation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831745A1 (de) * 1988-09-19 1990-03-22 Aweco Kunststofftech Geraete Geschirrspuel- oder waschmaschine mit einer einbringvorrichtung fuer zugabemittel
US5446531A (en) * 1994-05-20 1995-08-29 Honeywell Inc. Sensor platform for use in machines for washing articles
US6006388A (en) * 1998-04-14 1999-12-28 Young; Cecil Blake Dispenser for dispensing concentrated liquid soap to industrial cleaning apparatuses
DE19858386A1 (de) * 1998-12-17 2000-06-21 Bsh Bosch Siemens Hausgeraete Transmissionsmeßvorrichtung
WO2002029150A1 (fr) * 2000-10-04 2002-04-11 The Procter & Gamble Company Dispositif de dosage intelligent
US20020185162A1 (en) * 1999-09-16 2002-12-12 Michael Rosenbauer Device for monitoring the functioning of a rotating liquid-discharging appliance

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831745A1 (de) * 1988-09-19 1990-03-22 Aweco Kunststofftech Geraete Geschirrspuel- oder waschmaschine mit einer einbringvorrichtung fuer zugabemittel
US5446531A (en) * 1994-05-20 1995-08-29 Honeywell Inc. Sensor platform for use in machines for washing articles
US6006388A (en) * 1998-04-14 1999-12-28 Young; Cecil Blake Dispenser for dispensing concentrated liquid soap to industrial cleaning apparatuses
DE19858386A1 (de) * 1998-12-17 2000-06-21 Bsh Bosch Siemens Hausgeraete Transmissionsmeßvorrichtung
US20020185162A1 (en) * 1999-09-16 2002-12-12 Michael Rosenbauer Device for monitoring the functioning of a rotating liquid-discharging appliance
WO2002029150A1 (fr) * 2000-10-04 2002-04-11 The Procter & Gamble Company Dispositif de dosage intelligent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3266358A1 (fr) * 2016-07-07 2018-01-10 Sanhua AWECO Appliance Systems GmbH Lave-vaisselle comportant un bloc détecteur destiné à déterminer un mouvement rotatif d'un bras de pulvérisation

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