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Stain removal process using combination of low and high speed spin

a high-speed spin and stain removal technology, applied in the field of clothing article treatment, can solve problems such as the potential risk of “suds lock” and achieve the effect of high spin speed and high spin speed

Inactive Publication Date: 2007-04-19
WHIRLPOOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention relates to methods for laundering textile wash loads in a washing apparatus. The methods involve introducing a chemical solution into the wash tub and rotating the wash basket at a low speed to apply the chemical solution to the textile wash load. The wash basket is then rotated at a high speed to remove excess chemical solution and the process is repeated. The methods provide efficient and effective laundering with reduced chemical usage and improved washing performance.

Problems solved by technology

A technical hurdle that must be managed when pretreating fabrics with concentrated detergent solution is the potential risk of “suds lock”.

Method used

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  • Stain removal process using combination of low and high speed spin
  • Stain removal process using combination of low and high speed spin
  • Stain removal process using combination of low and high speed spin

Examples

Experimental program
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Effect test

example 1

[0047] Table 1, below, summarizes the steps of a detergent pretreatment process. Table 2, below, summarizes the steps of a concentrated bleach treatment process.

[0048] In the stain removal pretreatment process of Table 1, the manufacturer's recommended amount of powdered or liquid detergent is added to the wash tub of the automatic washer via the detergent dispenser. Warm tap water is added to the wash tub through the main wash dispenser in step 3. The steps 1-13 of Table 1 embody a concentrated detergent stain removal pretreatment process of this invention.

TABLE 1DescriptionDriveofMotorDrive MotorStepSequenceNotesActionProfileDuration (Min:Sec)1coastwaitOFFspeed = 02spin ONspinspeed = 20; ramp = 303fillWL = 15 mmOFF4recirc ONspin0:151recirc OFFspin0:206spin ONspinspeed = 100; ramp = 70:207spin ONspinspeed = 140; ramp = 800:158spin ONspinspeed = 190; ramp = 900:159spin ONspinspeed = 280; ramp = 900:2510coastOFF11spin ONLOOP: gospinspeed = 20; ramp = 30back to step#3; repeatloop 3...

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Abstract

An improved method for treating textiles such as clothing with a concentrated solutions in an automatic washer by alternating the speed of rotation of the automatic washer wash basket from a low spin speed to a high spin speed and applying the concentrated solution to the textiles when the wash basket is spinning at the low spin speed.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] This invention concerns improved methods for treating clothing articles with chemical solutions using an automatic washer. [0003] 2. Description of the Art [0004] In order to improve the cleaning of clothing articles in automatic washers, consumers routinely apply cleaning chemicals such as detergents, bleaches, fabric softeners and cleaning enhancing chemicals to clothing articles before or after they are placed into automatic washers. Manufactures of automatic washers have attempted to improve automatic washing machine convenience and clothing cleaning performance by incorporating clothing pretreatment steps into automatic washer processes in order to eliminate the need for consumers to manually pretreat clothing articles. [0005] Stain treatment processes based on spin and spray treatment of fabrics during the wash cycle are known. There are a number of commercially available automatic washers that are capable of ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D06F35/00D06F39/00
CPCD06F39/02D06F39/088
Inventor BERNARDINO, FLAVIO E.ZEITLER, MARY E.MUELLER, DALE EDWARD
Owner WHIRLPOOL CORP
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