METHOD FOR TREATING LAUNDRY AND SUITABLE LAUNDRY TREATMENT DEVICE FOR CARRYING OUT SAID METHOD

• US 20120060302A1
• Filed: 05/28/2010
• Published: 03/15/2012
• Est. Priority Date: 06/05/2009
• Status: Active Grant

• Current Assignee: BSH Hausgeraete GmbH (Robert Bosch GmbH)
• Original Assignee: BSH Bosch und Siemens Hausgerã¤Te GmbH (Robert Bosch GmbH)
• Inventors: Hanau, Andreas, Hasse, Torsten, Schaub, Hartmut
• Granted Patent: US 9,217,219 B2
• Time in Patent Office: Days
• US Class Current: 8/137
• CPC Class Codes: D06F 35/005 Methods for washing, rinsing or spin-drying
• CPC Class Codes: D06F 39/08 Liquid supply or discharge arrangements supply of soap or other washing agents D06F39/02
• CPC Class Codes: D06F 58/203 Laundry conditioning arrangements

Abstract

In a method for applying a treatment composition to a laundry item in a laundry treatment device having a rotatably mounted drum and a water supply, water is added to the laundry item in a first rotation step of the drum to set a pre-determined residual moisture content. A treatment composition is sprayed onto the laundry item with the aid of the water supply in a second rotation step of the drum, when the drum is rotated at a rotary speed which is equal to or greater than a centrifugal adhesion rotary speed.

Claims

1-14. -14. (canceled)

15. A method for applying a treatment composition to a laundry item in a laundry treatment device having a rotatably mounted drum and a water supply, said method comprising:

adding water to the laundry item in a first rotation step of the drum to set a pre-determined residual moisture content; and

spraying a treatment composition onto the laundry item in a second rotation step of the drum with the aid of the water supply, when the drum is rotated at a rotary speed which is equal to or greater than a centrifugal adhesion rotary speed.

16. The method of claim 15, wherein the adding step is executed in a rinsing step, with the first rotation step of the drum taking place simultaneously with pumping out or following pumping out of the water.

17. The method of claim 15, wherein the pre-determined residual moisture content is set by rotating the drum in the first rotation step at the centrifugal adhesion rotary speed.

18. The method of claim 15, wherein the drum rotates in the first rotation step at a rotary speed of ≧

100 revolutions per minute (rpm).

19. The method of claim 15, further comprising distributing the treatment composition in the laundry item in a third rotation step of the drum at a rotary speed which is lower than the centrifugal adhesion rotary speed.

20. The method of claim 15, wherein the spraying step is carried out with an injection device.

21. The method of claim 20, further comprising moving the drum in a third rotation step at a rotary speed below the centrifugal adhesion rotary speed in a reversing mode, and dispensing the treatment composition by the injection device only when the drum is moved at or above the centrifugal adhesion rotary speed.

22. A laundry treatment device, comprising

a rotationally mounted drum;

a water supply for adding water to the drum to thereby set a pre-determined residual moisture content in a laundry item in the drum in a first rotation step of the drum; and

a device cooperating with the water supply for applying a treatment composition onto a laundry item in the drum by spraying the treatment composition with the aid of the water supply onto the laundry item in a second rotation step of the drum at a rotary speed which is equal to or greater than a centrifugal adhesion rotary speed.

23. The laundry treatment device of claim 22, constructed in the form of a washing machine.

24. The laundry treatment device of claim 22, wherein the device is an injection device for injecting the treatment composition into the drum and onto the laundry item.

25. The laundry treatment device of claim 24, wherein the injection device is switchable independently of the drum.

26. The laundry treatment device of claim 22, further comprising a distributor for promoting a distribution of the treatment composition in the laundry item.

27. The laundry treatment device of claim 26, wherein the distributor is a laundry agitator which is optimized with regard to the distribution of the treatment composition in the laundry item.

28. The laundry treatment device of claim 24, wherein the injection device for injecting the treatment composition is regulable.