Method and circuitry for control of a sanitary mixer for cold and hot water
First Claim
1. Method for control of a sanitary mixer for cold and hot water by carrying out temperature control by means of a comparison between the actual temperature of the mixed water and a preset temperature, comprising:
- continuously measuring the actual temperature in the mixed water and electronically deriving at least two separate, time-varying regulating values, used for electromechanical adjustment both of the cold water supply as well as of the hot water supply, from the difference between the set temperature and the actual temperature and taking into account preset flow rate of the mixed water to be kept constant during temperature control in the determination of the regulating valves; and
determining from the time-varying regulating values partial flow rates proportional to the regulating values, continuously determining from the partial flow rates the instantaneous cumulative filling volume of the mixed water, and, when a cumulative filling volume value equal to a preset cumulative filling volume is reached, setting the regulatingvalues to zero, thus shutting off the cold water supply and the hot water supply.
1 Assignment
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Accused Products
Abstract
In a method for control of a sanitary mixer for cold and hot water, merely the actual temperature is continuously measured in the mixed water and compared to a preset temperature. At least two separate, time-varying regulating values, used for electromechanical adjustment both of the cold as well as of the hot water supply, are electronically derived from the difference between the set and actual temperature. A preset flow rate of the mixed water that is to be kept constant during temperature control is taken into account in the determination of the regulating values. Furthermore, partial flow rates for the cold water supply and hot water supply that are proportional to the regulating values can be determined from the time-varying regulating values. These are then used to continuously determine the instantaneous cumulative filling volume of the mixed water. As soon as a cumulative filling volume value equal to a preset cumulative filling volume is reached, the cold and hot water supplies can be shut off. In addition, a filling operation can be interrupted and resumed taking into account the filling volume drawn up to the interruption. In this way actuation of the cold and hot water valves is made possible via a simple temperature measurement while dispensing with the flow rate determination; in this case temperature, flow rate and/or filling volume can be preset.
44 Citations
16 Claims
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1. Method for control of a sanitary mixer for cold and hot water by carrying out temperature control by means of a comparison between the actual temperature of the mixed water and a preset temperature, comprising:
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continuously measuring the actual temperature in the mixed water and electronically deriving at least two separate, time-varying regulating values, used for electromechanical adjustment both of the cold water supply as well as of the hot water supply, from the difference between the set temperature and the actual temperature and taking into account preset flow rate of the mixed water to be kept constant during temperature control in the determination of the regulating valves; and determining from the time-varying regulating values partial flow rates proportional to the regulating values, continuously determining from the partial flow rates the instantaneous cumulative filling volume of the mixed water, and, when a cumulative filling volume value equal to a preset cumulative filling volume is reached, setting the regulatingvalues to zero, thus shutting off the cold water supply and the hot water supply. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16)
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2. Method according to calim 1 wherein at the beginning of the determination procedure for the cumulative filling volume the determination of the regulating values is started at the same time.
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12. Method for control of a sanitary mixer for cold and hot water by carrying out temperature control by means of a comparison between the actual temperature of the mixed water and a preset temperature, comprising:
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continuously measuring the actual temperature in the mixed water and electronically deriving at least two separate, time-varying regulating values, used for electromechanical adjustment both of the cold water supply as well as of the hot water supply, from the difference between the set temperature and the actual temperature and taking into account a preset flow rate of the mixed water to be kept constant during temperature control in the determination of the regulating values; and determining from the time-varying regulating values partial flow rates proportional to the regulating values, continuously determining from the partial flow rates the instantaneous cumulative filling volume of;
the mixed water, and, when a cumulative filling volume value equal to a preset cumulative filling volume is reached, setting the regulating values to zero, thus shutting off the cold water supply and the hot wa;
er supply,wherein, at the beginning of the determination procedure for the cumulative filling volume, the determination of the regulating values is started at the same time. - View Dependent Claims (13)
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Specification