EP1444394B1 - Dosiervorrichtung für flüssigwaschmittel - Google Patents

Dosiervorrichtung für flüssigwaschmittel Download PDF

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Publication number
EP1444394B1
EP1444394B1 EP01972902A EP01972902A EP1444394B1 EP 1444394 B1 EP1444394 B1 EP 1444394B1 EP 01972902 A EP01972902 A EP 01972902A EP 01972902 A EP01972902 A EP 01972902A EP 1444394 B1 EP1444394 B1 EP 1444394B1
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EP
European Patent Office
Prior art keywords
dosing
drive
washing agent
exit
water
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
EP01972902A
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English (en)
French (fr)
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EP1444394A1 (de
Inventor
A. Levent Hasanreisoglu
Yusuf GÜçLÜ
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.)
Arcelik AS
Original Assignee
Arcel K A
Arcel K A
Arcelik AS
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 Arcel K A, Arcel K A, Arcelik AS filed Critical Arcel K A
Publication of EP1444394A1 publication Critical patent/EP1444394A1/de
Application granted granted Critical
Publication of EP1444394B1 publication Critical patent/EP1444394B1/de
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
    • 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

  • the present invention is related to a unit that doses a required amount of liquid washing agents like detergent in household appliances.
  • washing household appliances need cleaning and/or softening material for cleaning. Before each washing cycle user has to add the washing agent.
  • an automatic liquid washing agent dosing device in washing machines, instead of filling up the washing agent storage each time, the user fill up the washing agent such as cleaning or softening liquids once and forget about it for a time period
  • measuring the amount of the washing agent for each washing cycle could be done by different ways such as measuring weight, measuring volume, measuring time.
  • the designated amount of the washing agent is mixed with water and the rest of the washing agent is stored and insulated.
  • there can be problems while taking the perfect amount of washing agent at each dosing, and/or insulating the dosing volume from the water pressure, and/or keeping the washing agent for a suitable time period in the washing agent container.
  • Liquid detergent distributor for a washing machine disposed in a lower portion of the machine below the washing tub thereof and comprising a container for storing the liquid detergents, communicating with a metering chamber disposed therebelow via an automatic valve.
  • Said metering chamber is divided into two hermetically separated chambers by means of a flexible diaphragm.
  • One of said compartments is connected to the washing tub, while the other compartment is connected to the washing tub and to a water supply.
  • the latter compartment is adapted to be intermittently supplied with water so as to transfer metered amounts of the liquid detergents to the tub.
  • the object of the invention is to develop a device for dosing the liquid washing agent to the household appliances just using water pressure without using any power supply.
  • Figure 1 is the schematic view of the washing machine with liquid dosing unit Figure 2
  • Figure 3a is the three dimensional view of the pump Figure 3b
  • Figure 3c is the sectional view of the pump Figure 3c
  • Figure 4d is the sectional exploded view of the pump Figure 4a
  • Figure 4b is the sectional view of the pressure regulator Figure 5
  • Figure 6 is a sectional view of the pump that is used without a pressure regulator with drive exits
  • a household appliance (23) includes a washing tub (24), at least one control unit, one or more than one input valve (22), preferably a solenoid one, one or more than one washing agent container (27), one or more than one hose (21) for connection and a liquid dosing unit (1).
  • the liquid washing agent dosing unit (1) includes one or more than one pump (2) for dosing the washing agent, one or more than one pressure regulator (16) for regulating the undesired water pressure changes and discharging the undesired water.
  • the pump (2) comprises two parts, a drive part (33) that provides hydraulic force for dosing and dosing part (34) for dosing the washing agent to the to the washing tub (24).
  • the drive part (33) has a main body (9) for holding components, a drive cover (7) for closing the main body (9), a first drive opening (3) for providing an inlet and an exit for the water, a second drive opening (4) for providing an inlet and an exit for the water, one or more than one drive piston (8) for transferring the water hydraulic force and one or more than one drive room (25) which is connected to the first drive opening (3) and/or the second drive opening (4).
  • the dosing part (34) has a dosing body (12) for holding components, a dosing cover (15) for closing the dosing body (12), at least one dosing inlet (5) connected to the washing agent container (27) for sucking the washing agent, at least one dosing exit (6) for transferring the washing agent to the washing tub (24), one or more than one dosing piston (11) for transferring the water hydraulic force and one or more than one dosing room (26) connected to the drive inlet (5) and/or the drive exit (6).
  • a shaft (10) passes from the shaft hole (28) and connects the drive part (33) and dosing part (34).
  • the shaft (10) is mounted to the drive piston (8) on one end and connected to the dosing piston (11) on the other end.
  • the dosing piston (11) has one or more than one projection (32) on one of its face which touches to the surface of the dosing body (12).
  • the dosing body (12) has one or more than one inlet groove (29) and one or more than one exit groove (30) for holding the components. There is a valve (13) and a groove spring (14) in each of the grooves (29,30).
  • the inlet and exit grooves (29,30) have at least one transfer hole (40) that connects the inlet and exit grooves (29,30) to the dosing room (26).
  • the dosing cover (15) has transfer holes (40) for connecting the inlet and exit grooves (29,30) to the dosing inlet (5) and dosing exit (6).
  • the transfer hole (40) is closed and/or opened by the projection (32).
  • the valve (13) has a special form for closing the dosing hole (31) and transfer hole (40) in order to let the liquid pass over its body.
  • the groove springs (14) always push the valves (13) to close the dosing hole (31) and transfer hole (40).
  • a force, which is in reverse direction and bigger than the groove spring (14) force act on the valve (13)
  • the valve (13) begins to move toward the groove spring (14) and the dosing hole (31) and transfer hole (40) are opened.
  • the movement of the dosing piston (11) against the air and/or liquid in the dosing room (26) supplies this reversal force.
  • the pressure regulator (16) has one or more than one regulator inlet (17) for water entrance, one or more than one regulator exit (18) for water exit and regulating the water flow by its cross sectional area, one or more than one regulator room (36) connected to the regulator inlet (17) for directing the water to the regulator exit (18), and one or more than one regulator discharge exit (19) for discharging the excess water to the washing tub (24) over the regulator room (36), and a discharge room (20) for collecting overflow and discharged water.
  • the pressure regulator (16) regulates the undesired pressure changes by its conical inkpot form. The water enters to the pressure regulator (16) from the regulator inlet (17) and passes to the regulator room (36) for resting and directing to the regulator exit (18).
  • the cross sectional areas cannot be changed, only the required amount of water can pass to the regulator exit (18) with respect to the cross sectional area of the regulator exit (18). But in order to discharge the undesired amount of the water entering from the regulator inlet (17) the discharge room (20) and the regulator discharge exit (19) are used.
  • the pressure regulator (16) has another important duty for discharging the water filled to the propelling room (25) and squeezed by the propelling piston (8). This squeezed water try to turn back to the pressure regulator (16) through the hose (21). Since there is still water in the regulator room (36) and cannot be pushed back, the squeezed water is discharged by the regulator discharge exit (19).
  • the input valve (22) is opened by the control unit for providing network water to the liquid dosing unit (1).
  • the water reaches to the first drive opening (3) after passing through the pressure regulator (16).
  • Water enters to the drive room (25) by using the first drive opening (3) and tries to push the drive piston (8).
  • the drive piston (8) is moving, the connected shaft (10) and the dosing piston (11) move with the drive piston (8) simultaneously.
  • the dosing piston (11) moving with the propeller piston (8) a pressure occurs in the dosing room (26). This pressure produce a force and this force begins to push the dosing valves (13) in the inlet and exit grooves (29,30).
  • the dosing valve (13) in the inlet groove (29) tries to close the dosing inlet (5) and the dosing valve (13) in the exit groove (30) is try to open the dosing exit (6). At this time no entrance can occur from the dosing inlet (5), but all the liquids inside the dosing room (26) try to leave from the dosing exit (6). This movement continues until the drive piston (8) touches to the surface of the drive room (25) at which shaft hole (28) is placed. Since the dosing inlet (5) is connected to the washing agent container (27) that includes washing agent and dosing exit (6) connected washing tub (24), only the washing agent filled to the dosing room (26) is pushed to the washing tub (24).
  • the control unit directs the water to the second drive opening (4) instead of the first drive opening (3).
  • the water begins to enter through the second drive opening (4) after passing the pressure regulator (16).
  • the propeller piston (8) has to move to the first drive opening (3) with the shaft (10) and the dosing piston (11).
  • dosing piston (11) moves with the propeller piston (8) a vacuum occurs in the dosing room (26). This vacuum produces a force and this force begins to pull the dosing valves (13) in the inlet and exit grooves (29,30).
  • the dosing valve (13) in the inlet groove (29) tries to open the dosing inlet (5) and the dosing valve (13) in the exit groove (30) tries to close the dosing exit (6).
  • washing agent entrance occur from the washing agent container (27) at the dosing inlet (5), but none of the washing agent inside the dosing room (26) tries to leave from the dosing exit (6) to the washing tub (24).
  • This movement continues until the drive piston (8) touches to the surface of the drive cover (7).
  • This working cycle continue until the control unit closes the input valve (22).
  • the dosing room (26) has a minimum volume for providing a unit dose. If more than one unit dose is required, this working procedure is repeated several times until the required dosing amount is reached.
  • any driving unit is not used except the water pressure.
  • the liquid washing agent dosing unit (1) can be used at any part of the household appliance (23) and/or can be used with other dosing units especially the granular detergent dosing units.
  • the pump (2) can work at all possible lowest pressure values.
  • the pump (2) comprises a pressure spring (37) for the movement of the shaft (10) (Fig 5).
  • water is directed to the first drive opening (3) by the input valve (22). Water pushes the drive piston (8) and compresses the drive spring (37) placed under the drive piston (8). While the drive piston (8) moving, the shaft (10) connected to the drive piston (8) and dosing piston (11) connected to the shaft (10) moves simultaneously. The movement of the dosing piston (11) occurs a force on the valves (13) and springs (14) in the inlet (29) and exit (30) grooves. Dosing inlet (5) is closed, dosing exit (6) is opened, and washing agent inside the dosing room (26) is forced to flow to the washing tub (24).
  • the projection (32) closes the transfer hole (40).
  • the input valve (22) that provides water to the liquid washing agent dosing unit (1) is closed, water force in the drive room (25) lose its effectiveness and drive spring (37) begin to push the drive piston (8) to the first drive opening (3).
  • the shaft (10) and the dosing piston (8) move with the drive piston (8).
  • projection (32) leaves from the transfer holes (40) and open the transfer holes (40). This creates a vacuum in the dosing room (26), and valves (13) begin to move against to the groove springs (14).
  • Dosing inlet (5) is opened, dosing exit (6) is closed, and washing agent inside the dosing room (26) is forced to suck from the washing agent container (27). This working procedure continues until the requested dosing amount flowed to the washing tub (24) in the control of the control unit.
  • first drive exit (38) is placed between the drive piston (8) and the first drive opening (3) (Fig 6).
  • the second drive exit (39) is placed between the drive piston (8) and the second drive opening (4).
  • first drive exit (38) and the second drive exit (39) network water pressure is regulated and undesired water is discharged from the drive room (25).
  • water is directed to the first drive opening (3) by the input valve (22) controlled by the control unit. Water pushes the drive piston (8) and the water behind the drive piston (8) is discharged from the second drive exit (39).
  • first drive opening (3) When the first drive opening (3) is closed and second drive opening (4) is opened by the input valve (22) controlled by the control unit, water begins to fill to the drive room (25) and begin to push the drive piston (8) to the first drive opening (3). While moving to the first drive opening (3), the shaft (10) and the dosing piston (8) move with the drive piston (8). By the movement of the dosing piston (11), projection (32) leaves from the transfer holes (40) and open the transfer holes (40). This creates a vacuum in the dosing room (26), and valves (13) begin to move against to the groove springs (14). Dosing inlet (5) is opened, dosing exit (6) is closed, and washing agent inside the dosing room (26) is forced to suck from the washing agent container (27). This working procedure continues until the requested dosing amount flowed to the washing tub (24) in the control of the control unit.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Detergent Compositions (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Claims (12)

  1. Flüssigwaschmitteldosierungseinheit (1) für ein Haushaltsgerät (23), z.B. eine Waschmaschine, die eine Waschtrommel (24), wenigstens eine Steuerungseinheit, ein Eingangsventil oder mehr als ein Eingangsventil (22), vorzugsweise ein Elektromagnetventil, einen oder mehrere Waschmittelbehälter (27), und einen oder mehrere Schläuche (21) aufweist, dadurch gekennzeichnet, dass: die Flüssigwaschmitteldosierungseinheit (1) eine oder mehrere Pumpen (2), die ausschließlich mit Wasserdruck arbeiten, um das Waschmittel aus dem Waschmittelbehälter (27) in die Waschtrommel (24) zu dosieren, und einen oder mehrere Druckregler (16) zum Regeln der unerwünschten Veränderungen des Wasserdrucks und zum Ablassen des unerwünschten Wassers durch seine konische, tintenfassartige Form aufweist.
  2. Flüssigwaschmitteldosierungseinheit (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Pumpe (2) ein Antriebsteil (33), das eine Hydraulikkraft zum Dosieren bereitstellt, ein Dosierungsteil (34) zum Dosieren des Waschmittels in die Waschtrommel (24), und eine Wellenbohrung (28) zwischen dem Antriebsteil (33) und dem Dosierungsteil (34) umfasst.
  3. Flüssigwaschmitteldosierungseinheit (1) nach Anspruch 1 und 2, dadurch gekennzeichnet, dass das Antriebsteil (33) einen Grundkörper (9) zum Aufnehmen von Bauteilen, eine Antriebsabdeckung (7) zum Schließen des Grundkörpers (9), eine erste Antriebsöffnung (3) zum Bereitstellen eines Einlaufs und Auslaufs für das Wasser, eine zweite Antriebsöffnung (4) zum Bereitstellen eines Einlaufs und eines Auslaufs für das Wasser, einen oder mehrere Antriebskolben (8) zum Übertragen der Hydraulikkraft des Wassers, und eine oder mehrere Antriebskammern (25) umfasst, die mit der ersten Antriebsöffnung (3) und/oder der zweiten Antriebsöffnung (4) verbunden sind.
  4. Flüssigwaschmitteldosierungseinheit (1) nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass das Dosierungsteil (34) einen Dosierungskörper (12) zum Aufnehmen von Bauteilen, eine Dosierungsabdeckung (15) zum Schließen des Dosierungskörpers (12), wenigstens einen Dosierungseinlauf (5), der mit dem Waschmittelbehälter (27) verbunden ist, um das Waschmittel abzusaugen, wenigstens einen Dosierungsauslauf (6) zum Leiten des Waschmittels in die Waschtrommel (24), einen oder mehrere Dosierungskolben (11) zum Übertragen der Hydraulikkraft des Wassers, und eine oder mehrere Dosierungskammern (26) aufweist.
  5. Flüssigwaschmitteldosierungseinheit (1) nach Anspruch 1 bis 4, dadurch gekennzeichnet, dass eine Welle (10) an einem Ende an dem Antriebskolben (8) angebracht ist, und an dem anderen Ende mit dem Dosierungskolben (11) verbunden ist, und von der Wellenbohrung (28) verlaufend das Antriebsteil (33) und das Dosierungsteil (34) verbindet.
  6. Flüssigwaschmitteldosierungseinheit (1) nach Anspruch 1 bis 5, dadurch gekennzeichnet, dass der Grundkörper (9) wenigstens eine Umleitbohrung (41) am Grundkörper (9) und zwischen der Wellenöffnung (28) und dem Dosierungskolben (11) umfasst, um notwendige Umleitluft aus der Umgebung bereitzustellen, damit der Dosierungskolben (11) und die Welle (10) leicht bewegt werden können.
  7. Flüssigwaschmitteldosierungseinheit (1) nach Anspruch 1 bis 6, gekennzeichnet durch einen oder mehrere Vorsprünge (32) an dem Dosierungskolben (11), die die Fläche des Dosierungskörpers (12) berühren.
  8. Flüssigwaschmitteldosierungseinheit (1) nach Anspruch 1 bis 7, dadurch gekennzeichnet, dass der Dosierungskörper (12) eine oder mehrere Einlaufnuten (29) zum Aufnehmen von Bauteilen, eine oder mehrere Auslaufnuten (30) zum Aufnehmen von Bauteilen, wenigstens eine Dosierungsbohrung (31) zum Verbinden der Einlass- und Auslassnute (29, 30) mit dem Dosierungseinlauf (5) und dem Dosierungsauslauf (6), wenigstens eine Übertragungsbohrung (40), die durch den Vorsprung (32) geschlossen und/oder geöffnet wird und die Einlauf- und Auslaufnute (29, 30) mit der Dosierungskammer (26) verbindet, ein oder mehrere Ventile (13) mit einer speziellen Form, um die Dosierungsbohrung (31) und/oder die Übertragungsbohrung (40) zu schließen und die Flüssigkeit über ihren Körper laufen zu lassen, und eine oder mehrere Nutenfedern (14) umfasst, die stets gegen die Ventile (13) drücken, um die Dosierungsbohrungen (31) oder die Übertragungsbohrungen (40) in jeder der Nuten (29, 30) zu schließen.
  9. Flüssigwaschmitteldosierungseinheit (1) nach Anspruch 1 bis 8, dadurch gekennzeichnet, dass der Druckregler (16) einen oder mehrere rechteckige Einläufe (17) zum Wassereintritt, einen oder mehrere Reglerausläufe (18) zum Wasseraustritt, die den Wasserfluss durch ihre Querschnittfläche regeln, eine oder mehrere Reglerkammern (36), die mit dem Reglereinlauf (17) verbunden sind, um das Wasser zu dem Reglerauslauf (18) zu lenken, einen oder mehrere Reglerablassausläufe (19) zum Ablassen des überschüssigen Wassers in die Waschtrommel (24), und eine Ablasskammer (20) zum Auffangen von überfließendem oder abgelassenem Wasser umfasst.
  10. Flüssigwaschmitteldosierungseinheit (1) nach Anspruch 1 bis 9, dadurch gekennzeichnet, dass das Antriebsteil (33) eine Antriebsfeder (37) umfasst, um eine mechanische Kraft auf die Welle (10) auszuüben, damit diese in ihre Ausgangsposition zurückkehrt, ohne dass Wasserdruck benutzt wird.
  11. Flüssigwaschmitteldosierungseinheit (1) nach Anspruch 1 bis 10, dadurch gekennzeichnet, dass das Antriebsteil (33) einen Grundkörper (9) zum Aufnehmen von Bauteilen, eine Antriebsabdeckung (7) zum Schließen des Grundkörpers (9), eine erste Antriebsöffnung (3) zum Bereitstellen eines Einlaufs und eines Auslaufs für das Wasser, eine zweite Antriebsöffnung (4) zum Bereitstellen eines Einlaufs und eines Auslaufs für das Wasser, einen oder mehrere Antriebskolben (8) zum Übertragen der Hydraulikkraft des Wassers, und eine oder mehrere Antriebskammern (25) umfasst, die mit der ersten Antriebsöffnung (3) und der zweiten Antriebsöffnung (4) verbunden sind.
  12. Flüssigwaschmitteldosierungseinheit (1) nach Anspruch 1 bis 11, gekennzeichnet durch einen ersten Antriebsauslauf (38) zwischen dem Antriebskolben (8) und der ersten Antriebsöffnung (3), um das unerwünschte Wasser, das in die Antriebskammer (25) gelangt, zu regeln und abzulassen, und einen zweiten Antriebsauslauf (39) zwischen dem Antriebskolben (8) und der zweiten Antriebsöffnung (4), um das unerwünschte Wasser, das in die Antriebskammer (25) gelangt, zu regeln und abzulassen.
EP01972902A 2001-09-11 2001-09-11 Dosiervorrichtung für flüssigwaschmittel Expired - Lifetime EP1444394B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/TR2001/000045 WO2003023121A1 (en) 2001-09-11 2001-09-11 A liquid washing agent dosing unit

Publications (2)

Publication Number Publication Date
EP1444394A1 EP1444394A1 (de) 2004-08-11
EP1444394B1 true EP1444394B1 (de) 2007-07-25

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EP01972902A Expired - Lifetime EP1444394B1 (de) 2001-09-11 2001-09-11 Dosiervorrichtung für flüssigwaschmittel

Country Status (4)

Country Link
EP (1) EP1444394B1 (de)
AT (1) ATE368144T1 (de)
DE (1) DE60129609T2 (de)
WO (1) WO2003023121A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9790935B2 (en) 2014-06-12 2017-10-17 Whirlpool Corporation Pressure-driven metered mixing dispensing pumps and methods
EP2251480B1 (de) 2009-05-11 2017-11-29 Electrolux Home Products Corporation N.V. Waschmaschine
US10655264B2 (en) 2015-08-04 2020-05-19 Whirlpool Corporation Laundry treating appliance with internal housing

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2910913B1 (fr) * 2006-12-27 2009-05-29 Brandt Ind Sas Distributeur de detergent pour introduitre au moins une dose de detergent, notamment pour appareil electromenager du type machine a laver
EP3460120B1 (de) 2009-05-11 2023-07-12 Electrolux Home Products Corporation N.V. Waschmaschine
ITPN20130013A1 (it) * 2013-02-28 2014-08-29 Fulvio Scodellaro Dispositivo dosatore di agenti di lavaggio per macchine lavastoviglie o lavabiancheria
PT107790A (pt) * 2014-07-18 2016-01-18 Henrique Paulo Gomes Da Silva Domingues Aparelho doseador com detector de nível
TR201600525A2 (de) * 2016-01-13 2016-06-21

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7812348L (sv) * 1978-11-30 1980-05-31 John Olof Nesman Apparat for tillforsel av diskmedel, vetmedel etc till en diskmaskin
IT1147142B (it) * 1981-10-15 1986-11-19 Zanussi A Spa Industrie Distributore di liquidi per macchine lavabiancheria

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2251480B1 (de) 2009-05-11 2017-11-29 Electrolux Home Products Corporation N.V. Waschmaschine
US9790935B2 (en) 2014-06-12 2017-10-17 Whirlpool Corporation Pressure-driven metered mixing dispensing pumps and methods
US10066611B2 (en) 2014-06-12 2018-09-04 Whirlpool Corporation Pressure-driven metered mixing dispensing pumps and methods
US11073141B2 (en) 2014-06-12 2021-07-27 Whirlpool Corporation Pressure-driven metered mixing dispensing pumps and methods
US10655264B2 (en) 2015-08-04 2020-05-19 Whirlpool Corporation Laundry treating appliance with internal housing
US10914028B2 (en) 2015-08-04 2021-02-09 Whirlpool Corporation Laundry treating appliance with stain station
US11203831B2 (en) 2015-08-04 2021-12-21 Whirlpool Corporation Laundry treating appliance with internal housing

Also Published As

Publication number Publication date
ATE368144T1 (de) 2007-08-15
EP1444394A1 (de) 2004-08-11
DE60129609T2 (de) 2008-05-21
WO2003023121A1 (en) 2003-03-20
DE60129609D1 (de) 2007-09-06

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