Method and arrangement for the energy-saving operation of dishwashers
First Claim
1. A method for energy-saving operation of a dishwasher (110;
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410), in particular for washing dishes (9;
414) or medical appliances, with the dishwasher (110;
410) having a total number N≧
2 of electrical load elements (14, 15, 18, 19, 22, 23, 26, 33;
418, 420, 432, 438), having the following steps;
a) a group of n electrical load elements (14, 15, 18, 19, 22, 23, 26, 33;
418, 420, 432, 438) is assigned a maximum electrical total power pmax;
b) each electrical load element i in the group of n electrical load elements (14, 15, 18, 19, 22, 23, 26, 33;
418, 420, 432, 438) is assigned a finite number mi of discrete electrical power levels pij where m1≧
2;
with there being a maximum power level pimax for each i, where pij≧
pimax,where the sum of all maximum power levels pimax form a worst total power
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Accused Products
Abstract
The energy-saving operation of dishwashers (110; 410) plays an important role, in particular for larger enterprises, e.g. for the canteens of hospitals or large enterprises, and in the medical disinfection field. The invention thus discloses a method and a device, in which a total maximum electric output is assigned to a group of electric consumer elements (14, 15, 18, 19, 22, 23, 26, 33; 418, 420, 432, 438) of a dishwasher (110; 410). In addition, at least two output levels are assigned to each electric consumer element (14, 15, 18, 19, 22, 23, 26, 33; 418, 420, 432, 438) of said group. An optimum combination of output levels is then selected in a requirement determination step, based on an operational state B of the dishwasher (119), whereby for each consumer element (14, 15, 18, 19, 22, 23, 26, 33; 418, 420, 432, 438) the selected output level is adapted to the output requirement of the consumer element (14, 15, 18, 19, 22, 23, 26, 33; 418, 420, 432, 438) in operational state B and the total output of all consumer elements (14, 15, 18, 19, 22, 23, 26, 33; 418, 420, 432, 438) does not exceed the maximum electric total output. The operation of the dishwasher (110; 410) can also be divided into three phases, a start phase, an activation phase and a load control phase. The output levels of the individual consumer elements (14, 15, 18, 19, 22, 23, 26, 33; 418, 420, 432, 438) are optimally adapted in accordance with the requirements in said operating phases, thus allowing a response to be made to any fluctuations in the operational state. The inventive method permits significant energy savings to be made in comparison to conventional methods for controlling dishwashers (110; 410) and leads to a more rapid attainment of a ready status of the dishwasher (110; 410) upon activation.
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Citations
18 Claims
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1. A method for energy-saving operation of a dishwasher (110;
-
410), in particular for washing dishes (9;
414) or medical appliances, with the dishwasher (110;
410) having a total number N≧
2 of electrical load elements (14, 15, 18, 19, 22, 23, 26, 33;
418, 420, 432, 438), having the following steps;a) a group of n electrical load elements (14, 15, 18, 19, 22, 23, 26, 33;
418, 420, 432, 438) is assigned a maximum electrical total power pmax;b) each electrical load element i in the group of n electrical load elements (14, 15, 18, 19, 22, 23, 26, 33;
418, 420, 432, 438) is assigned a finite number mi of discrete electrical power levels pij where m1≧
2;with there being a maximum power level pimax for each i, where pij≧
pimax,where the sum of all maximum power levels pimax form a worst total power - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18)
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410), in particular for washing dishes (9;
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10. An apparatus for energy-saving operation of a dishwasher (110;
-
410), in particular for washing dishes (9;
414) or medical appliances, with the dishwasher (110;
410) having a total number N≧
2 of electrical load elements (14, 15, 18, 19, 22, 23, 26, 33;
418, 420, 432, 438), having;a) means (310) for assignment of a maximum electrical total power pmax to a group of n electrical load elements (14, 15, 18, 19, 22, 23, 26, 33;
418, 420, 432, 438);b) means (310, 332, 334, 336, 338, 340;
452, 454, 456, 458) for assignment of a finite number mi of discrete electrical power levels pij to each electrical load element i in the group of n electrical load elements (14, 15, 18, 19, 22, 23, 26, 33;
418, 420, 432, 438),with there being a maximum power level pimax for each i, where pij≦
pmax,where the sum of all maximum power levels pimax form a worst total power - View Dependent Claims (11, 12, 13)
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410), in particular for washing dishes (9;
Specification