Method for operating a dishwashing machine and maintaining the active oxygen content in the wash tank
First Claim
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1. A method for operating a dishwashing machine comprising a wash tank in which a detergent assisted or complemented in its effect by a bleach is introduced into the wash tank, wherein said method comprises the steps of:
- including an active oxygen carrier in said bleach;
introducing a plurality of individual doses of detergent at different times into said wash tank, during predetermined phases of operation to maintain a desired level of detergent in said wash tank; and
introducing doses of said bleach containing an active oxygen carrier into said wash tank at times that detergent is not being added to said wash tank, for maintaining the active oxygen content in said wash tank above a predetermined minimum level over rinse and stoppage phases of operation of said dishwashing machine.
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Abstract
A dishwashing machine includes a washing tank for receiving wash water, and a detergent from a detergent dispensing system. A separate dosing system includes a tank for storing bleach, and a pump for supplying bleach from the bleach tank to the washing tank in measured quantities at predetermined times to maintain a desired active oxygen content therein over a complete cycle of operation.
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Citations
21 Claims
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1. A method for operating a dishwashing machine comprising a wash tank in which a detergent assisted or complemented in its effect by a bleach is introduced into the wash tank, wherein said method comprises the steps of:
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including an active oxygen carrier in said bleach; introducing a plurality of individual doses of detergent at different times into said wash tank, during predetermined phases of operation to maintain a desired level of detergent in said wash tank; and introducing doses of said bleach containing an active oxygen carrier into said wash tank at times that detergent is not being added to said wash tank, for maintaining the active oxygen content in said wash tank above a predetermined minimum level over rinse and stoppage phases of operation of said dishwashing machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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- 17. An apparatus for supplying the wash tank of a dishwashing machine with chemical substances, comprising a detergent dosing system for supplying detergent, a separate dosing system including a pump, and a storage container for supplying another substance, wherein said separate dosing system includes a bleach dosing system which includes means providing an operational mode for maintenance dosing of said bleach, which is activated during pauses in the dosing of detergent, for maintaining the active oxygen content in said wash tank over rinse and stoppage phases of operation of said dishwashing machine.
Specification