US3756457A - Dual additive feeder for dishwashing - Google Patents

Dual additive feeder for dishwashing Download PDF

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Publication number
US3756457A
US3756457A US00097127A US3756457DA US3756457A US 3756457 A US3756457 A US 3756457A US 00097127 A US00097127 A US 00097127A US 3756457D A US3756457D A US 3756457DA US 3756457 A US3756457 A US 3756457A
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US
United States
Prior art keywords
venturi
additive
throat
aspirator
communicating
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
US00097127A
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English (en)
Inventor
L Holmes
Dougall F Mc
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.)
ECONOMICAL LAB Inc
ECONOMICAL LABOR INC US
Original Assignee
ECONOMICAL LAB Inc
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 ECONOMICAL LAB Inc filed Critical ECONOMICAL LAB Inc
Application granted granted Critical
Publication of US3756457A publication Critical patent/US3756457A/en
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
    • A47L15/4427—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of liquids entrained in the water supply line by a pressure drop, e.g. resulting from a Venturi throat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87571—Multiple inlet with single outlet
    • Y10T137/87587—Combining by aspiration
    • Y10T137/87595—Combining of three or more diverse fluids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87571—Multiple inlet with single outlet
    • Y10T137/87587—Combining by aspiration
    • Y10T137/87603—Plural motivating fluid jets

Definitions

  • DUAL ADDlTlVE FEEDER FOR DISHWASHING [75] Inventors: Lambert Holmes, Creve Coeur;
  • This dual feeder does not require pre-mixing of the additives and hence increases the storage life of incompatible additives. Further, when the supply of one additive is depleted, the supply of the other is automatically cut off and thus there is no wastage of the additive not yet depleted.
  • the dual feeder provides a means of feeding additives from a pair of additive reservoirs into the water supply to a dishwashing machine and includes cut-off means automatically cutting off additive from one of the reservoirs when the additive in the other of said reservoirs is exhausted.
  • the feeder means includes a pair of feed lines having intake ports immersible in associated reservoirs, said one reservoir being.-;-cut off when the additive in the other reservoir falls below the level of its associated aspirator tube intake port.
  • the dual feeder includes a venturi means receiving the water supply and the feed lines are provided by aspirator tubes communicating between the throat of the venturi means and the additive reservoirs so that when the supply of one additive is depleted to a level below the end of the tube, the vacuum at the venturi throat is broken resulting in automatic cut-off of the additive in the other reservoir.
  • the venturi means preferably includes two venturis interconnected at their throat portions by a conduit. Mixing chambers are provided at each venturi throat and the conduit extends between said mixing chambers.
  • Each aspirator includes an aspirator port communicating directly with the mixing chambers of an associated venturi so that the aspirators are in communication with each other.
  • the water supply line includes branch portions, each connected to the entrance of an associated venturi and the discharge line includes a common mixing chamber communicating with the exit port of each venturi.
  • FIG. 1 illustrates the dual feeder used in conjunction with a dishwashing machine
  • FIG. 2 is an enlarged sectional view of the mixer block.
  • the dual additive feeder is utilized in conjunction with a dishwashing machine 11 and provides a means of injecting at least two dishwashing additives in liquid form into a common water supply for delivery to said machine 11.
  • the liquid additives are aspirated from containers l2 and 13 which constitute first and second reservoirs.
  • the dual feeder 10 includes a mixer block 14 shown in enlarged detail in FIG. 2 and in which is formed a pair of venturis l5 and 16 constituting first and second venturis.
  • Each venturi includes an entrance port 20, an exit port 21 and a throat portion 22.
  • the throat portion 22 is smaller in' diameter than the entrance and exit ports 20 and 21 to effectuate the reduction in fluid pressure characteristic of a venturi device.
  • a mixing chamber, generally indicated by numeral 23, is formed about each venturi throat 22.
  • the mixing chambers 23 are substantially cylindrical in configuration.
  • Each chamber 23 communicates with the upstream convergent portion 24 of an associated venturi and also leads directly into the downstream divergent portion 25 of said venturi.
  • the mixing chambers 23 are interconnected by a conduit 26 extending between said chambers 23 and said conduit 26 in effect, provides communication between the throat portions 22 of each of the venturis l5 and 16.
  • water is supplied to the mixer block 14 by a supply line 17 connected to a water main 18.
  • the supply line 17 communicates by means of a fitting 19 directly to an inlet passage 27 of the mixing block 14, said passage 27 communicating in turn with-an inverted U-shaped passage 28 have opposed branch portions 29, each communicating directly with the entrance port 20 of an associated venturi.
  • the liquid additives from the containers l2 and 13 are supplied to the mixer block 14 by aspirator tubes 30 and 31 respectively.
  • the aspirator tubes 30 and 31 each include an intake port 32 or 33 operatively disposed below the level of the liquid additive and each of said tubes 30 and 31 is connected directly to an associated aspirator passage 34 by means of a fitting 35.
  • the combined aspiratortubes andpassages constitute aspirator means providing feed lines between the reservoirs l2 and 13 and the venturis l5 and 16 respectively.
  • the aspirator passages 34 are formed in mirror-image of each other within the mixer block 14 and each communicates directly with the mixing chamber 23 of an associated venturi by means of an aspirator port 36.
  • the ports 36 are preferably located substantially at the throat portion 22 of an associated venturi. It will be understood that by virtue of the conduit interconnecting passage 26, between the mixing chambers 23, the aspirator passages 34 are efi'ectively in communication with each other.
  • the venturis l5 and 16 discharge into a common discharge line 37 which includes a flared collection head 38 disposed within a cylindrical cavity 39 communicating with the exit ports 21 of the venturis l5 and 16 and providing a common mixing chamber for additivecharged water issuing from each of the venturis.
  • the combined stream charged with both additives passes from the collection head 38 into the dishwashing machine ll as clearly indicated in FIG. 1.
  • the operation of the dual feeder is such that when either one of the liquid additives is depleted sufficiently so that the level falls below the inlet port of its associated aspirator tube, the supply of both additives is automatically cut off. This operation will now be briefly described.
  • a conventional controller responding to the dilution of the wash solution may be provided to make an audible or visual signal to indicate that replenishment of the additive containers is required.
  • a dual additive feeder for a dishwashing machine comprising:
  • venturi including an entrance port, an exit port and a throat disposed between said ports
  • supply means supplying fluid to the entrance port
  • a first aspirator means communicating between the first additive reservoir and the throat portion of the venturi at one location on the throat portion
  • a second aspirator means communicating between the second additive reservoir and the throat portion of the venturi at another location on the throat portion, the first and second aspirator means aspirating additives to the venturi throat under normal operating conditions and, when one additive is depleted to a predetermined level the associated aspirator means supplying air in lieu of additive to the venturi throat to automatically cut off the other aspirator means, and
  • discharge means discharging fluid from the exit port.
  • each aspirator means includes an elongate tube communicating with the mixing chamber and having a air inlet port disposed below the additive level under normal operating conditions to aspirate additives to said mixing chamber and both aspirator means being cut off when the level of one additive falls below the inlet port of the associated aspirator means.
  • a first venturi including an entrance port, an exit port and a throat portion disposed between said ports
  • a second venturi including an entrance port, an exit port and a throat portion disposed between said ports
  • conduit means communicating between the throat portions of said first and second venturis
  • supply means supplying fluid to the entrance ports of each venturi
  • a first aspirator means communicating between the first additive reservoir and the throat portion of the first venturi
  • a second aspirator means communicating between the second additive reservoir and the throat portion of the second venturi
  • discharge means discharging fluid from the exit ports of the first and second venturis.
  • a dual additive feeder as defined in claim 3, in which: j. a mixing chamber is peripherally disposed about the throat portion of each venturi, k. the conduit means includes a passage communicating between the mixing chambers, and I. each aspirator means includes an elongate tube communicating with an associated mixing chamber.
  • a method of feeding and cutting off additives in a dishwashing system comprising the steps of: a. passing a water supply through a venturi, b. supplying one liquid additive to the throat of the venturi by aspiration, c. supplying another liquid additive to the throat of the venturi by aspiration, d. supplying air to the venturi throat selectively in lieu of one of said liquid additives to destroy the venturi vacuum and automatically terminate the supply of both of said additives.

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  • Washing And Drying Of Tableware (AREA)
US00097127A 1970-12-11 1970-12-11 Dual additive feeder for dishwashing Expired - Lifetime US3756457A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9712770A 1970-12-11 1970-12-11

Publications (1)

Publication Number Publication Date
US3756457A true US3756457A (en) 1973-09-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00097127A Expired - Lifetime US3756457A (en) 1970-12-11 1970-12-11 Dual additive feeder for dishwashing

Country Status (9)

Country Link
US (1) US3756457A (de)
JP (1) JPS5039358B1 (de)
BR (1) BR7108063D0 (de)
CA (1) CA990076A (de)
DE (1) DE2158469B2 (de)
FR (1) FR2117354A5 (de)
GB (1) GB1328908A (de)
NL (1) NL151899B (de)
SE (1) SE398704B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032073A (en) * 1974-06-13 1977-06-28 Ragnar Jakob Aaltonen Apparatus including a pump mixer for coating objects
US4142681A (en) * 1975-09-22 1979-03-06 Hechler Iv Valentine Multi-stage solution proportioner dispenser
EP0152154A2 (de) * 1984-02-16 1985-08-21 Whirlpool International B.V. Automatischer Haushaltsgeschirrspüler mit Vorrichtung zur Herstellung einer oxydierenden Lösung von Natrium-Hypochlorit
US4886090A (en) * 1987-04-24 1989-12-12 Ashland Oil, Inc. Apparatus for failsafe metering of a fluid
US5799831A (en) * 1996-03-20 1998-09-01 Ecolab Inc. Dual aspirator
US5893519A (en) * 1997-09-12 1999-04-13 Cavaretta; Kenneth L. Self-educting, high expansion, multi-agent nozzle
US20050084414A1 (en) * 2003-10-17 2005-04-21 Treiman Michael T. Chemical proportioning and dispensing systems
US20070144558A1 (en) * 2003-12-16 2007-06-28 Bsh Bosch Und Siemens Hausgerate, Gmbh Dishwashing machine having a dosing device for additives and associated method
US20090266389A1 (en) * 2005-12-23 2009-10-29 Bsh Bosch Und Siemens Hausgerate Gmbh Push-In Metering System for Domestic Appliances
US20100186779A1 (en) * 2006-10-09 2010-07-29 Stefano Livoti control apparatus for a washing station
US8850856B2 (en) 2010-12-16 2014-10-07 General Electric Company Apparatus and method for using a dispensing system utilizing a Venturi component
US9051676B2 (en) 2011-03-30 2015-06-09 General Electric Company Apparatus and method for utilizing a venturi effect in a dispenser
US11008211B2 (en) * 2019-08-28 2021-05-18 Gregory ROBINSON System and method for distributing scented, color-coded, or color scented dilution ratios of disinfectants, disinfectant based cleaning concentrates and ready to use foaming and non foaming hard surface, soft surface and skin cleaning concentrates that are diluted into ready to use form products

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA752732B (en) * 1974-05-15 1976-12-29 Colgate Palmolive Co Unitary detergent compositions and washing methods
FR2435283A1 (fr) * 1978-09-08 1980-04-04 Durand Texte Gerard Dispositif pour diluer de facon discontinue, a une concentration determinee, un liquide dans un autre liquide
DE3215854A1 (de) * 1982-04-28 1983-11-03 Siemens AG, 1000 Berlin und 8000 München Waschmitteleinspuelvorrichtung
DE3310663C2 (de) * 1983-03-24 1985-07-25 Alfred Kärcher GmbH & Co, 7057 Winnenden Hochdruckreinigungsgerät
DE4018582A1 (de) * 1990-06-09 1991-12-12 Henkel Kgaa Gewerbliche geschirrspuelmaschine mit injektorduese
KR940009563B1 (ko) * 1992-09-04 1994-10-15 대우전자주식회사 식기 세척기
DE102019135111A1 (de) * 2019-12-19 2021-06-24 Miele & Cie. Kg Einrichtung zum Zuführen von Behandlungsmittel für eine Waschmaschine und Waschmaschine
DE102019135125A1 (de) * 2019-12-19 2021-06-24 Miele & Cie. Kg Einrichtung zum Zuführen von Behandlungsmittel für eine Waschmaschine und Waschmaschine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724583A (en) * 1953-06-19 1955-11-22 Targosh Ted Hose apparatus with liquid mixing nozzle
US2952209A (en) * 1957-10-14 1960-09-13 Axel R Scholin Metering apparatus with automatic cut-off
US2975804A (en) * 1958-06-16 1961-03-21 Dunn Fred Cleansing tool
US3038495A (en) * 1959-06-24 1962-06-12 Watco Inc Water treatment device
US3112884A (en) * 1961-05-09 1963-12-03 Robert A Gilmour Spraying device
US3459334A (en) * 1967-09-11 1969-08-05 James A Evans Automobile wash and wax assembly
US3643688A (en) * 1969-01-28 1972-02-22 Noll Maschfab Gmbh Device for the continuous mixing of beverage components in a predetermined quantity ratio

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4215676Y1 (de) * 1965-02-19 1967-09-07

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724583A (en) * 1953-06-19 1955-11-22 Targosh Ted Hose apparatus with liquid mixing nozzle
US2952209A (en) * 1957-10-14 1960-09-13 Axel R Scholin Metering apparatus with automatic cut-off
US2975804A (en) * 1958-06-16 1961-03-21 Dunn Fred Cleansing tool
US3038495A (en) * 1959-06-24 1962-06-12 Watco Inc Water treatment device
US3112884A (en) * 1961-05-09 1963-12-03 Robert A Gilmour Spraying device
US3459334A (en) * 1967-09-11 1969-08-05 James A Evans Automobile wash and wax assembly
US3643688A (en) * 1969-01-28 1972-02-22 Noll Maschfab Gmbh Device for the continuous mixing of beverage components in a predetermined quantity ratio

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032073A (en) * 1974-06-13 1977-06-28 Ragnar Jakob Aaltonen Apparatus including a pump mixer for coating objects
US4142681A (en) * 1975-09-22 1979-03-06 Hechler Iv Valentine Multi-stage solution proportioner dispenser
EP0152154A2 (de) * 1984-02-16 1985-08-21 Whirlpool International B.V. Automatischer Haushaltsgeschirrspüler mit Vorrichtung zur Herstellung einer oxydierenden Lösung von Natrium-Hypochlorit
EP0152154A3 (en) * 1984-02-16 1987-01-14 N.V. Philips' Gloeilampenfabrieken Automatic dishwashing machine for domestic use with means for producing an oxidising solution of sodium hypochlorite
US4886090A (en) * 1987-04-24 1989-12-12 Ashland Oil, Inc. Apparatus for failsafe metering of a fluid
US5799831A (en) * 1996-03-20 1998-09-01 Ecolab Inc. Dual aspirator
US5893519A (en) * 1997-09-12 1999-04-13 Cavaretta; Kenneth L. Self-educting, high expansion, multi-agent nozzle
US7163617B2 (en) 2003-10-17 2007-01-16 Platinum Technologies Company, Llc Chemical proportioning and dispensing systems
US20050084414A1 (en) * 2003-10-17 2005-04-21 Treiman Michael T. Chemical proportioning and dispensing systems
US20070144558A1 (en) * 2003-12-16 2007-06-28 Bsh Bosch Und Siemens Hausgerate, Gmbh Dishwashing machine having a dosing device for additives and associated method
US7789967B2 (en) * 2003-12-16 2010-09-07 Bsh Bosch Und Siemens Hausgeraete Gmbh Dishwashing machine having a dosing device for additives and associated method
US20090266389A1 (en) * 2005-12-23 2009-10-29 Bsh Bosch Und Siemens Hausgerate Gmbh Push-In Metering System for Domestic Appliances
US9163349B2 (en) * 2005-12-23 2015-10-20 Bsh Hausgeraete Gmbh Push-in metering system for domestic appliances
US20100186779A1 (en) * 2006-10-09 2010-07-29 Stefano Livoti control apparatus for a washing station
US8850856B2 (en) 2010-12-16 2014-10-07 General Electric Company Apparatus and method for using a dispensing system utilizing a Venturi component
US9051676B2 (en) 2011-03-30 2015-06-09 General Electric Company Apparatus and method for utilizing a venturi effect in a dispenser
US11008211B2 (en) * 2019-08-28 2021-05-18 Gregory ROBINSON System and method for distributing scented, color-coded, or color scented dilution ratios of disinfectants, disinfectant based cleaning concentrates and ready to use foaming and non foaming hard surface, soft surface and skin cleaning concentrates that are diluted into ready to use form products

Also Published As

Publication number Publication date
NL151899B (nl) 1977-01-17
GB1328908A (en) 1973-09-05
JPS5039358B1 (de) 1975-12-16
FR2117354A5 (de) 1972-07-21
BR7108063D0 (pt) 1973-07-03
NL7115686A (de) 1972-06-13
DE2158469B2 (de) 1975-12-18
SE398704B (sv) 1978-01-16
DE2158469A1 (en) 1972-06-29
CA990076A (en) 1976-06-01

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