EP1059059B1 - Dispositif pour doser proportionnellement un détergent liquide dans les lave-vaisselle industriels ou professionnels - Google Patents

Dispositif pour doser proportionnellement un détergent liquide dans les lave-vaisselle industriels ou professionnels Download PDF

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Publication number
EP1059059B1
EP1059059B1 EP00830111A EP00830111A EP1059059B1 EP 1059059 B1 EP1059059 B1 EP 1059059B1 EP 00830111 A EP00830111 A EP 00830111A EP 00830111 A EP00830111 A EP 00830111A EP 1059059 B1 EP1059059 B1 EP 1059059B1
Authority
EP
European Patent Office
Prior art keywords
liquid detergent
dish washer
wash water
dishwasher
throughput
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
EP00830111A
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German (de)
English (en)
Other versions
EP1059059A3 (fr
EP1059059A2 (fr
Inventor
Mauro c/o Injecta S.r.L. Quintarelli
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.)
Injecta Srl
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INJECTA Srl
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Publication date
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Publication of EP1059059A2 publication Critical patent/EP1059059A2/fr
Publication of EP1059059A3 publication Critical patent/EP1059059A3/fr
Application granted granted Critical
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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
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4418—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of liquids

Definitions

  • This invention relates to the field of dish washers, particularly, but not exclusively, of industrial and professional dish washers.
  • this invention relates to systems for dispensing a liquid detergent for dish washers.
  • the automatic dispensers wherewith dish washers are equipped at present are installed under the care of the firms providing the detergent and left in use commodate, i.e. provider firms remain the owners of the dispensers. Therefore, the installation is carried out in a second time relative to the first installation of the dish washer.
  • This type of operation has the drawback that the installation of the dispenser requires an enabling and/or electric power supply on the part of the dish washer for one to be able to let in the detergent at the right moment, such as that of the rinse stage of the dish washer and/or of the initial dish washer tank loading stage.
  • Document D1 relates to an apparatus for controlling the dosing of materials mainly for dish washing and laundry systems. It includes means for monitoring the operating status of a machine in which dosing is to be controlled and means for controlling dosing pumps, in accordance with the operating status of the machine and at least one predetermined parameter, which parameter can be fluid conductivity, time, fluid flowrate or fluid speed.
  • D1 envisages an embodiment including a microprocessor.
  • the output of an in-line conductivity sensor - e.g. monitoring the status of a liquid in a rinse pump - and of plural additional sensors - e.g. monitoring the system temperature and detergent characteristics - are connected to the microprocessor.
  • the output of a pump control circuitry is also connected to the microprocessor.
  • the microprocessor in turn has an output to the pump control circuitry.
  • the pump control circuitry in turn is connected to a pump and to a water flow sensor. Pump flow sensors can also be connected to the pump control circuitry.
  • the microprocessor can be set up setting control parameters by which the pump control circuitry will operate. Control parameters are selected depending on the type of washing system from a group consisting of fluid conductivity, fluid flowrate, fluid speed and time, and may relate to fluid detergent, water or a combination thereof.
  • D1 so the concepts are present of a microprocessor-controlled (virtually multi-purpose) apparatus and of fluid flowrate as a parameter on the basis of which control may be performed by the microprocessor apparatus.
  • U.S. Patent No. 5,014,211 (referred to as Document D2 hereinafter) to Turner et al ., is a system for automatically delivering viscous liquid chemicals to a number of destinations, e.g. industrial washing machines.
  • Such a system has a set of metering pumps which pump respective viscous chemicals into a manifold, and a distribution pipe wherethrough the chemicals are dispensed to the single destinations.
  • the viscous chemicals are diluted in water in the manifold, and thereafter the so obtained water-diluted chemicals are transferred through the distribution pipe to a specific destination.
  • a flowmeter is used to calibrate all the metering pumps.
  • a pump controller in functional relationship with the flowmeter, based on signals sent from the latter thereto, computes the volume throughput of the water flow through the manifold.
  • a device for metering a liquid detergent for a dishwasher particularly an industrial or professional dishwasher, said dishwasher including:
  • said programmable data processing and control means for controlling said liquid detergent pumping means include an embedded-control VLSI integrated microcontroller.
  • said fluid throughput sensing means include a turbine volumetric sensor.
  • FIGURE 1 whereof shows a scheme of a dish washer connected with the water supply with a device according to this invention inserted therein.
  • the liquid detergent proportional metering device of this invention is intended to be inserted into the line for feeding wash water P1, P2 of a dish washer DW, particularly an industrial or professional dish washer, whereof it constitutes the water inlet.
  • the dish washer is equipped with means, such as for instance a peristaltic pump, for pumping a liquid detergent 4 fed from a line of a liquid detergent 8 which they let into the wash water inside the dish washer through an inlet line 9 .
  • the device according to this invention includes fluid throughput sensing means 1 , intended to be inserted into the wash water inlet line P1 , P2.
  • the tract of the line for feeding wash water has been indicated that is upstream of fluid throughput sensing means 1 relative to the dish washer
  • the tract of the line for feeding wash water has been indicated that is downstream of fluid throughput sensing means 1 relative to the dish washer, i.e. in direct connection with the dish washer itself.
  • Sensing means 1 have sensed value output means 5, 6, for transmitting the throughput sensed value carried out thereby, i.e. of data of value of instantaneous throughput of the stream of the wash water inlet.
  • the sensed value output means 5, 6 end in programmable data processing and control means 3, realized by a control circuit, programmed for controlling the aforesaid liquid detergent pumping means 4, through a control signal line 7 , to let the liquid detergent into the wash water in a manner proportional to the throughput of the water inlet into the dish washer, whereof they take the data through the sensed value output or transmission means 5, 6 themselves.
  • the fluid throughput sensing means include a turbine volumetric sensor having a rotor 2 which, when is traversed by the wash water inlet stream, rotates at a speed proportional to the throughput of the stream itself.
  • the rotation speed is sensed by means known in the art, such as for instance a pulse counter optic or magnetic sensor, and rendered in signals put in sensed value transmission lines 5, 6 (sensed value transmission means) and brought therethrough to programmable data processing and control means 3.
  • the programmable data processing and control means for controlling said liquid detergent pumping means include an embedded-control very large scale integrated (VLSI) microcontroller, such as for instance 8-bit microcontroller PIC16C62 by Microchip Technology Inc., United States of America, with a backing electrically erasable programmable read-only memory (E 2 PROM), such as for instance model 24LC04B, by Microchip Technology Inc. too.
  • VLSI very large scale integrated
  • E 2 PROM electrically erasable programmable read-only memory

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Detergent Compositions (AREA)

Claims (3)

  1. Dispositif pour doser un détergent liquide dans un lave-vaisselle (DW), particulièrement un lave-vaisselle industriel ou professionnel, le dit lave-vaisselle en comprenant:
    (a) une ligne pour alimenter de l'eau de lavage (P1, P2) au lave-vaisselle, constituant une entrée d'eau;
    (b) des moyens de pompage de détergent liquide (4) pour amener (8, 9) un détergent liquide dans l'eau de lavage, à l'intérieur du lave-vaisselle;
    (c) des moyens pour capter un débit de fluide (1);
    (d) des moyens de traitement de données programmables et de contrôle (3) pour contrôler (7) les dits moyens de pompage de détergent (4);
    (e) des moyens de transfer de signaux pour communiquer (5, 6) des donnés de débit de fluide captées par les dits moyens pour capter un débit de fluide (1) aux dits moyens de traitement de données programmables et de contrôle (3);
        caracterisé en ce que :
    (i) les dits moyens pour capter un débit de fluide (1) sont destinés à être insérés dans la dite ligne pour alimenter de l'eau de lavage (P1, P2) pour mésurer le débit de l'entrée d'eau; et en ce que
    (ii) les dits moyens de traitement de données programmables et de contrôle (3) sont programmés pour permettre aux dits moyens de pompage de détergent liquide (4) d'introduire (9) dans le lave-vaisselle une quantité de détergent liquide laquelle est proportionnelle au débit de l'eau d'entrée captée par les dits moyens pour capter un débit de fluide (1).
  2. Dispositif pour doser un détergent liquide pour un lave-vaisselle (DW), particulièrement un lave-vaisselle industriel ou professionnel, selon la Revendication 1, dans lequel les dits moyens de traitement de données programmables et de contrôle (3) pour contrôler les dits moyens de pompage de détergente liquide (4) comprennent un microcontrôleur intégré VLSI embedded-control.
  3. Dispositif pour doser un détergent liquide pour un lave-vaisselle (DW), particulièrement un lave-vaisselle industriel ou professionnel, selon la Revendication 1 ou la Revendication 2,
       dans lequel
       les dits moyens pour capter un débit de fluide (1) comprennent un capteur volumétric à turbine (2).
EP00830111A 1999-06-08 2000-02-17 Dispositif pour doser proportionnellement un détergent liquide dans les lave-vaisselle industriels ou professionnels Expired - Lifetime EP1059059B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999RM000368A IT1306705B1 (it) 1999-06-08 1999-06-08 Dispositivo di dosaggio proporzionale di detergente liquido perlavastoviglie industriali e professionali.
ITRM990368 1999-06-08

Publications (3)

Publication Number Publication Date
EP1059059A2 EP1059059A2 (fr) 2000-12-13
EP1059059A3 EP1059059A3 (fr) 2002-04-24
EP1059059B1 true EP1059059B1 (fr) 2004-04-14

Family

ID=11406815

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00830111A Expired - Lifetime EP1059059B1 (fr) 1999-06-08 2000-02-17 Dispositif pour doser proportionnellement un détergent liquide dans les lave-vaisselle industriels ou professionnels

Country Status (4)

Country Link
EP (1) EP1059059B1 (fr)
AT (1) ATE264084T1 (fr)
DE (1) DE60009790T2 (fr)
IT (1) IT1306705B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2871406B1 (fr) * 2004-06-14 2006-09-22 Chomarat Composites Soc Par Ac Panneau espaceur composite remplissant une double fonction de renfort et d'isolation phonique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5014211A (en) * 1989-06-16 1991-05-07 Diversey Corporation Microprocessor controlled liquid chemical delivery system and method
GB2312419B (en) * 1996-03-22 1998-02-11 Chem Controls Ltd Dosing control apparatus

Also Published As

Publication number Publication date
DE60009790T2 (de) 2005-03-31
EP1059059A3 (fr) 2002-04-24
ITRM990368A0 (it) 1999-06-08
EP1059059A2 (fr) 2000-12-13
DE60009790D1 (de) 2004-05-19
ITRM990368A1 (it) 2000-12-08
IT1306705B1 (it) 2001-10-02
ATE264084T1 (de) 2004-04-15

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