US3399813A - Detergent dosing device for dishwashers - Google Patents

Detergent dosing device for dishwashers Download PDF

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Publication number
US3399813A
US3399813A US629613A US62961367A US3399813A US 3399813 A US3399813 A US 3399813A US 629613 A US629613 A US 629613A US 62961367 A US62961367 A US 62961367A US 3399813 A US3399813 A US 3399813A
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US
United States
Prior art keywords
plunger
cylinder
dosing device
detergent
container
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
US629613A
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English (en)
Inventor
Theyssen Artur Wilhelm Josef
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.)
US Philips Corp
North American Philips Co Inc
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US Philips Corp
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Filing date
Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
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Publication of US3399813A publication Critical patent/US3399813A/en
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    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state

Definitions

  • a dosing device for introducing a predetermined amount of detergent into the wash region of a dishwasher.
  • the dosing device is mounted on a pivoting door of the washer.
  • the device includes a container and a cylinderplunger unit which receives a fixed amount of detergent from the supply container when the door of the dishwasher is pivoted to a position substantially normal to the initial position.
  • the structure providing access between the supply container and the cylinder-plunger unit controls the amount of detergent introduced into the unit.
  • Dosing devices for the automatic supply of liquid detergents in dishwashers or the like comprising a tiltable lid or door are known in various embodiments. Particularly known are those which comprise a detergent container connected with the lid or the door and a cylinderplunger unit, joined to the container and having an outlet-valve and a control-member for the cylinder-plunger unit and the outlet-valve. Such dosing devices serve to provide the possibility of adjusting the quantity of liquid detergent to be supplied in dishwashers at any instant.
  • the cylinder-plunger units are, in general, formed by fairly complicated dosing pumps which are relatively dilficult and costly to manufacture. These disadvantages are avoided by the present invention.
  • the invention has for its object to provide a closing device for the automatic supply of liquid detergents in dishwashers comprising a tiltable lid or door.
  • a closing device for the automatic supply of liquid detergents in dishwashers comprising a tiltable lid or door.
  • the invention relates to a dosing device for the automatic supply of liquid detergents in dishwashers or the like comprising a tiltable lid or door, said device comprising a detergent container, connected with the lid or the door and a cylinder-plunger unit, joined to said container and having an outlet-valve, and a contralmember for the cylinder-plunger unit and the outletvalve.
  • the invention includes a cylinder-plunger unit which comprises a pot-shaped plunger adapted to be turned in the cylinder and having a recess, extending throughout the length of the plunger in the wall thereof.
  • At least one edge of the recess has 'a helical shape and is adjustable by turning the plunger with respect to a flow channel extending in the longitudinal direction of the cylinder between the cylinder and the container also an outlet-valve is arranged in the bottom of the plunger and of the cylinder, which in the open position of the tilted lid or door the cylinder-plunger unit is turned from a substantially vertical position into the horizontal position and is located beneath the liquid level in the container.
  • the dosing device When the lid or the door of the dishwasher is closed, the dosing device is returned to the vertical position, so that a quantity of detergent flows out of the cylinder and the plunger into the container, which cannot be held by the plunger.
  • the dosing volume of the plunger is variable simply by turning the plunger.
  • the helical boundary of the recess in the plunger wall and the substantially perpendicular flow channel or a boundary of said flow channel constitute so to say 'a point of intersection which determines the height of the liquid level in the plunger.
  • the dosing device according to the invention has a simple and compact structure and performs reliably the automatic supply of liquid detergents. Simply by opening and closing the lid or the door of the dishwasher for removing or inserting dishes respectively the dosing device or the plunger is automatically filled with the liquid detergent, up to a volume which is adjustable by the control-member of the plunger in accordance with the program. The delivery of the liquid detergent through the outlet-valve can be performed automatically at a predetermined instant.
  • This simple and reliable dosing device according to the invention has furthermore the advantage of low manufacturing costs, so that it is economical to manufacture.
  • FIG. 1 is a front sectional view of a dosing device according to the invention
  • FIG. 2 is a sectional view of the device of FIG. 1 taken on the line IIII;
  • FIG. 3 is a sectional view of the device of FIG. 1 taken on the line IIIIII;
  • FIG. 4 shows a dosing device according to the invention in the tilted position corresponding with the lid of the dishwasher being in the open position and
  • FIG. 5 shows the device of FIG. 4 in the vertical position, corresponding with the lid of the dishwasher being in closed position.
  • the dosing device 1 shown in the figures serves to automatically introduce liquid detergents 2 into dishwashers or the like.
  • the dishwasher and the lid are not shown in detail.
  • the dosing device comprises a detergent container 3 which is adapted to be joined to the lid or the door of the dishwasher and a cylinder-plunger unit 4 attached to the container 3.
  • the cylinder-plunger unit includes an outlet valve 5, a control-member for the outlet valve.
  • the control-member is not shown in the figures; it may be formed by a lifting magnet, a bimetal element or the like or appropriate structural elements such as control-members having control-discs, cams or the like and it may be directly connected to a time switch.
  • the cylinder plunger unit 4 comprises a cup-shaped plunger 7 journalled in the cylinder and having a recess 8 in the plunger wall, extending throughout the length of the plunger 7 at least one boundary 9 of the recess 8 is helical in shape as shown in FIG. 1.
  • the amount of open area of the recess 8 which is exposed to the flow channel 10 can be regulated by rotating the plunger 7 with respect to the flow channel 10.
  • Flow channel 10 extends in the longitudinal direction of the cylinder and is positioned between the cylinder 6 and the container 3.
  • the outlet valve 5 is arranged in the bottom 11 and 15 respectively of the plunger 7 and of the cylinder 6.
  • the cylinder-plunger unit 4 In the open position of the tilted lid or door the cylinder-plunger unit 4, is pivoted from a substantially vertical position into the horizontal position, and is located beneath the liquid level in the container 3 as shown in FIG. 4.
  • the recess 8 of the plunger wall is formed by a cut,
  • the recess in the plunger wall may be formed by a helical slot extending throughout the length of the plunger.
  • the flow channel 10 has the form of a T-shaped slot in the side of the cylinder wall facing the container and at the same time the cylinder wall forms the partition between the plunger 7 and the container 3, which is apparent from FIGS. 2 and 3.
  • the transverse part 13 of the T-slot projects above the open end 14 of the plunger 7.
  • the cylinder plunger unit 4 and the container 3 may be made of plastic, so that, when the door or the lid of the dishwasher are also made of plastic, the component parts may be integral with the lid or the door.
  • the outlet valve assembly 5 comprises a valve seat 16 in the cylinder bottom and a valve rod 17, pressed against the seat by spring 22.
  • the valve rod 17 is slidable in a guiding body 18, arranged in an air-tight manner on the cylinder 6 and extending into the plunger and provided above the plunger bottom 11 with catches 19, which grasp between extensions 20 on the inner wall of the plunger 7 and transfer the rotational movement to the plunger 7, when the valve rod 17 is turned.
  • the catches 19 with the valve rod 17 are freely movable, which means that in this direction of movement they are not in contact with the plunger 7.
  • the valve spring 22 surrounds the valve rod 17 between the guiding body 13 and a thrust-bearing 21. From FIG. 1 it will be apparent that the helical boundary 9 of the recess 8 in the plunger wall and the straight boundary 23 of the T-slot in the direction of length of the cylinder form a point of intersection A, which determines the dosing volume or the height of the level of the liquid detergent in the plunger 7. When the valve rod 17 or the plunger 7 is turned to the right, this point of intersection A is shifted upwards up to the open end 14 of the plunger 7.
  • a dosing device for attachment to a tiltable dishwasher door for supplying detergent into the dishwasher comprising: a detergent container adapted to be coupled 4 to said tiltable door; a cylinder-plunger unit joined to said detergent container for receiving detergent from said detergent container in response to tilting of said tiltable door, said cylinder-plunger unit comprising, an outlet valve in said unit for releasing detergent therefrom to said dishwasher; and a cup-shaped plunger rotatably journalled interiorly of said unit, said plunger having a recess extending substantially along the entire length thereof with one lengthwise boundary of said recess being angularly disposed with respect to the longitudinal axis of said plunger; and said cylinder-plunger unit having a flow channel therethrough extending longitudinally thereof, with said recess and said flow channel defining an access opening for providing fluid communication between said detergent container and the interior of said plunger, wherein the area of said access opening is varied in response to rotation of said plunger.
  • a dosing device according to claim 1 wherein the flow channel is a T-shaped slot in the side of said unit adjacent said detergent container, and said side of said unit is a separating partition between said plunger and said detergent container.
  • a dosing device according to claim 3 wherein the transverse portion of the T-slot projects above the open end of the plunger.
  • a dosing device according to claim 1 wherein at least the cylinder-plunger unit and the container are a synthetic resin.
  • outlet valve comprises a valve seat located in the base of said unit, and a valve rod normally biased against said seat.
  • a dosing device further comprising a guiding body arranged in an air-tight manner on said unit and projecting into said plunger wherein said valve road is slidingly disposed in said guiding body, and catch means coupled to said valve rod for engaging the inner wall of said plunger to transfer the rotational movement of the valve rod to the plunger.
  • a dosing device further comprising a valve spring coupled to the guiding body and surrounding the valve rod for biasing said valve rod in a normally closed position.
  • ROBERT B REEVES, Primary Examiner.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
US629613A 1966-04-09 1967-04-10 Detergent dosing device for dishwashers Expired - Lifetime US3399813A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG0046560 1966-04-09

Publications (1)

Publication Number Publication Date
US3399813A true US3399813A (en) 1968-09-03

Family

ID=7128077

Family Applications (1)

Application Number Title Priority Date Filing Date
US629613A Expired - Lifetime US3399813A (en) 1966-04-09 1967-04-10 Detergent dosing device for dishwashers

Country Status (8)

Country Link
US (1) US3399813A (de)
AT (1) AT265579B (de)
CH (1) CH465163A (de)
DE (1) DE1628593A1 (de)
ES (1) ES339031A1 (de)
GB (1) GB1181905A (de)
NL (1) NL6704736A (de)
SE (1) SE326005B (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2380015A1 (fr) * 1977-02-11 1978-09-08 Eaton Sa Monaco Doseur pour la distribution de liquides
US4190181A (en) * 1977-02-11 1980-02-26 Eaton Corporation Dispensing device
US5205304A (en) * 1992-01-16 1993-04-27 Maytag Corporation Rinse aid dispenser
US6161401A (en) * 1999-03-31 2000-12-19 Maytag Corporation Apparatus for assembling washing machine lid assembly
US6216498B1 (en) 1999-03-31 2001-04-17 Maytag Corporation Sealed top cover and lid for washing machine
US6327729B1 (en) 1999-03-31 2001-12-11 Maytag Corporation Washer lid having fluid dispenser and method for using same
US20050039781A1 (en) * 2002-11-01 2005-02-24 The Procter & Gamble Company Dispensing device for liquid detergent compositions
WO2006008692A1 (en) * 2004-07-15 2006-01-26 Elbi International S.P.A. Device for the metered delivery of a liquid agent, particularly for a dishwashing machine
US7931032B1 (en) 2006-05-19 2011-04-26 Knight, Llc Bulk dispensing of chemicals into a residential dishwasher
US8833605B2 (en) 2010-07-20 2014-09-16 Ecolab Usa Inc. Product delivery and monitoring system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2557054C3 (de) * 1975-12-18 1982-07-29 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Enthärtungseinrichtung für Haushaltgeräte, insbesondere für Geschirrspülmaschinen
DE2703296C3 (de) * 1977-01-27 1981-09-24 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Zugabevorrichtung für flüssiges Spülmittel in Haushaltgeräten
DE3442194A1 (de) * 1984-11-17 1986-05-28 Miele & Cie GmbH & Co, 4830 Gütersloh Geschirrspuelmaschine mit einer dosiervorrichtung
US7754025B1 (en) 2000-06-08 2010-07-13 Beverage Works, Inc. Dishwasher having a door supply housing which holds dish washing supply for multiple wash cycles
US7083071B1 (en) 2000-06-08 2006-08-01 Beverage Works, Inc. Drink supply canister for beverage dispensing apparatus
US6799085B1 (en) 2000-06-08 2004-09-28 Beverage Works, Inc. Appliance supply distribution, dispensing and use system method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB229549A (en) * 1924-06-16 1925-02-26 John William Proctor An improved milk delivery can
US2899115A (en) * 1959-08-11 Measuring dispenser
US2903165A (en) * 1957-05-13 1959-09-08 Vendo Co Dispensing trap having flexible walls

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899115A (en) * 1959-08-11 Measuring dispenser
GB229549A (en) * 1924-06-16 1925-02-26 John William Proctor An improved milk delivery can
US2903165A (en) * 1957-05-13 1959-09-08 Vendo Co Dispensing trap having flexible walls

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2380015A1 (fr) * 1977-02-11 1978-09-08 Eaton Sa Monaco Doseur pour la distribution de liquides
US4190181A (en) * 1977-02-11 1980-02-26 Eaton Corporation Dispensing device
US5205304A (en) * 1992-01-16 1993-04-27 Maytag Corporation Rinse aid dispenser
US6161401A (en) * 1999-03-31 2000-12-19 Maytag Corporation Apparatus for assembling washing machine lid assembly
US6216498B1 (en) 1999-03-31 2001-04-17 Maytag Corporation Sealed top cover and lid for washing machine
US6282927B1 (en) 1999-03-31 2001-09-04 Maytag Corporation Washing machine assembly
US6327729B1 (en) 1999-03-31 2001-12-11 Maytag Corporation Washer lid having fluid dispenser and method for using same
US20050039781A1 (en) * 2002-11-01 2005-02-24 The Procter & Gamble Company Dispensing device for liquid detergent compositions
WO2006008692A1 (en) * 2004-07-15 2006-01-26 Elbi International S.P.A. Device for the metered delivery of a liquid agent, particularly for a dishwashing machine
US7931032B1 (en) 2006-05-19 2011-04-26 Knight, Llc Bulk dispensing of chemicals into a residential dishwasher
US8833605B2 (en) 2010-07-20 2014-09-16 Ecolab Usa Inc. Product delivery and monitoring system

Also Published As

Publication number Publication date
SE326005B (de) 1970-07-13
GB1181905A (en) 1970-02-18
AT265579B (de) 1968-10-10
DE1628593A1 (de) 1972-05-18
ES339031A1 (es) 1968-04-16
NL6704736A (de) 1967-10-10
CH465163A (de) 1968-11-15

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