EP1059059A2 - 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
EP1059059A2
EP1059059A2 EP00830111A EP00830111A EP1059059A2 EP 1059059 A2 EP1059059 A2 EP 1059059A2 EP 00830111 A EP00830111 A EP 00830111A EP 00830111 A EP00830111 A EP 00830111A EP 1059059 A2 EP1059059 A2 EP 1059059A2
Authority
EP
European Patent Office
Prior art keywords
liquid detergent
dish washer
wash water
controlling
industrial
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.)
Granted
Application number
EP00830111A
Other languages
German (de)
English (en)
Other versions
EP1059059A3 (fr
EP1059059B1 (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 S.R.L.
Original Assignee
Injecta Srl
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 Injecta Srl filed Critical Injecta Srl
Publication of EP1059059A2 publication Critical patent/EP1059059A2/fr
Publication of EP1059059A3 publication Critical patent/EP1059059A3/fr
Application granted granted Critical
Publication of EP1059059B1 publication Critical patent/EP1059059B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47L15/44—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.
  • U.S. Patent No. 5,014,211 to Turner et al.
  • 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. Moreover, a flowmeter sensing value arrives to the pump controller from a conductivity cell, which value represents the value of the concentration of a water-diluted chemical, as a function of how much it differs from the value of the conductivity of plain water. So, the pump controller calibrates the pumps based on the values of the water throughput and of the conductivity of the water-diluted chemical.
  • U.S. Patent No. 5,014,211 makes use of a volume throughput sensor, and operates a proportional control, but in a spirit completely different from that of this invention, because it operates to the object of diluting chemicals which is easier to provide, but difficult to use in the viscous state. So U.S. Patent No. 5,014,211 does not teach anything relevant to the object of this invention.
  • a device for metering a liquid detergent for a dish washer particularly an industrial or professional dish washer, which dish washer includes:
  • 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 upstream 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 in 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 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)
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 true EP1059059A2 (fr) 2000-12-13
EP1059059A3 EP1059059A3 (fr) 2002-04-24
EP1059059B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2871406A1 (fr) * 2004-06-14 2005-12-16 Chomarat Composites Soc Par Ac Panneau espaceur composite remplissant une double fonction de renfort et d'isolation phonique

Citations (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
GB2312419A (en) * 1996-03-22 1997-10-29 Chem Controls Ltd Dosing control apparatus

Patent Citations (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
GB2312419A (en) * 1996-03-22 1997-10-29 Chem Controls Ltd Dosing control apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2871406A1 (fr) * 2004-06-14 2005-12-16 Chomarat Composites Soc Par Ac Panneau espaceur composite remplissant une double fonction de renfort et d'isolation phonique

Also Published As

Publication number Publication date
ATE264084T1 (de) 2004-04-15
EP1059059A3 (fr) 2002-04-24
ITRM990368A0 (it) 1999-06-08
IT1306705B1 (it) 2001-10-02
EP1059059B1 (fr) 2004-04-14
ITRM990368A1 (it) 2000-12-08
DE60009790D1 (de) 2004-05-19
DE60009790T2 (de) 2005-03-31

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