Patent ID: 7695568
Filing Date: 2010-04-13
Classification: A47L

Abstract:
1. A method for assessing and guaranteeing a thermal hygiene efficiency in a multi-tank dishwasher having at least one sensor that transmits a temperature inside at least one treatment zone to a machine control system or to a control system of the multi-tank dishwasher, the method comprising: detecting the temperature inside at least one of the treatment zones via the sensor; determining a heat input applied to items that are to be cleaned in at least one of the treatment zones based on the detected temperature; subsequently comparing the heat input in the at least one treatment zone with a predefined heat input; and varying, as a function of the result of the comparison of the heat input values, a transport speed of the items to be cleaned through the multi-tank dishwasher or varying the temperature of at least one process parameter acting on the heat input values as a control variable in a control loop for at least one of the treatment zones, the temperature being detected by a sensor either moved through the treatment zones or being stationarily mounted in a treatment zone of the multi-tank dishwasher, the temperature in one of the treatment zones already traversed by the items to be cleaned being adjusted and/or a prognosis of the heat input being made on the basis of an extrapolation of the temperature values of a downstream treatment zone viewed in the transport direction of the items to be cleaned.