US 7,740,181 B2 · Method and device for regulating the temperature of mixed water

Abstract

A method and a device are provided whereby a container can be continuously filled with mixed water from separate cold and hot water pipes K, W within a short time and the temperature T of the mixed water is kept as constant as possible at a predetermined value Ts during the supply process. According to the method according to the invention, the regulating process always takes place only in one direction from higher to lower temperature values. The method is implemented by a regulator 1 to 6 with separate intake pipes K and W for cold and hot water and a mechanical control element 6 which is only moved in one direction. The essential advantage of the method according to the invention is that it can be implemented very cheaply, especially a synchronous motor without reversal of the direction of rotation can be used as a drive for the control member 6. Possible perturbations in the hot water system can by intercepted to a sufficient extent by compensation which is easy to implement.

Claims9

Dependent claims

A method for regulating the temperature (T) of mixed water supplied from separate cold and hot water intakes to bring the mixed water to, and thereafter maintain the mixed water at, a desired mixed water temperature (Ts), wherein at the start of the water intake, the regulating system is adjusted so that the cold water intake is shut off and the hot water intake is completely opened, and that during the water intake, when the temperature of the hot water supplied from the hot water intake exceeds the desired mixed water temperature (Ts) at which the mixed water is to be maintained, the mixed water temperature (T) is regulated such that the quantity of inflowing water is decreased and the cold water intake is partially increased and that on reaching the desired temperature (Ts) in the mixed water, the quantities of the two incoming partial streams are kept constant, wherein when the temperature falls below the set desired temperature (Ts) in the mixed water, the intake of cold and hot water (K, W) is stopped and the regulating process is then started anew under initial conditions i.e, with maximum hot water intake and shut-off cold water intake.

A method for substantially maintaining the temperature of mixed water supplied from separate cold and hot water intakes into a water bearing household appliance at a desired mixed water temperature, the method comprising:

during a first inflow period, supplying water from the hot water intake into the water bearing household appliance while regulating the cold water intake to substantially preclude a supply of water from the cold water intake into the water bearing household appliance, whereupon water is supplied into the water bearing household appliance solely from the hot water intake;
during the first inflow period, monitoring the temperature of the water supplied into the water bearing household appliance solely from the hot water intake to determine if the temperature of such water supplied solely from the hot water intake exceeds the desired mixed water temperature at which the supply of mixed water is to be maintained;
when the temperature of water supplied solely from the hot water intake during the first inflow period exceeds the desired mixed water temperature, commencing a supplying of water from the cold water intake, the supplying of water from the cold water intake and the supplying of water from the hot water intake forming, at the time of the commencing a supplying of water from the cold water intake, a mixed supply of water having a first mixed temperature;
once the supplying of water from the cold water intake has commenced, regulating the supplying of water from the cold water intake and the supplying of water from the hot water intake to increase the temperature of the mixed supply of water from its first mixed temperature to the desired mixed water temperature;
once the desired mixed water temperature is reached, regulating the supplying of water from the cold water intake and the supplying of water from the hot water intake to maintain the mixed supply of water at substantially the desired mixed water temperature;
and
when a temperature of the mixed supply of water falls below the desired mixed water temperature, stopping the regulating of the supplying of water from the cold water intake and the supplying of water from the hot water intake and restarting the temperature regulating process with the cold water intake shut off and the hot water intake open.

4 more elements

Dependencies are inferred from the claim text.

Method and device for regulating the temperature of mixed water

Life of this patent

Method and device for regulating the temperature of mixed water

Life of this patent

Abstract

Claims9