초록 ▼

A hot water supplying system is adapted to be connected to hot and cold water sources to mix the hot and cold water for discharging the mixed water. The system comprises a mixing chamber having a mixing valve movable therein to vary the mixing ratio of the hot water to the cold water, and a controll

A hot water supplying system is adapted to be connected to hot and cold water sources to mix the hot and cold water for discharging the mixed water. The system comprises a mixing chamber having a mixing valve movable therein to vary the mixing ratio of the hot water to the cold water, and a controller at which an intended water temperature is selected in accordance with a temperature scale provided thereat. The controller is operatively connected to the mixing valve so as to move the same into a proper position of discharging the water at the selected temperature. The mixing valve is given a temperature-responsive characteristic to be capable of self-adjusting its position independently of the controller in such a way as to adjust the water temperature in an open loop control manner at the start of discharging the water. An initial compensation mode is provided in the system to monitor the water temperature and determine a deviation between the monitored temperature and the selected temperature. When the deviation exceeds an acceptable level, the controller responds to reassign the temperature scale with the mixing valve position in order to reduce the deviation to the acceptable level and therefore to provide a consistent relation between the water temperature and the selected temperature, whereby compensating for variations in temperature and pressures of the hot and cold water sources available at differing installation sites.

대표청구항 ▼

A hot water supplying system comprising: hot and cold water inlets adapted to be coupled respectively to hot and cold water sources; an outlet; a mixing chamber in fluid communication with said hot and cold inlets as well as said discharge outlet; a mixing valve operatively connected to an electric

A hot water supplying system comprising: hot and cold water inlets adapted to be coupled respectively to hot and cold water sources; an outlet; a mixing chamber in fluid communication with said hot and cold inlets as well as said discharge outlet; a mixing valve operatively connected to an electric motor to be thereby movable within said mixing chamber so as to vary the mixing ratio of the volume of the hot water to the cold water being fed from said hot and cold water inlets for discharging the water through said outlet, controller means having input means to select a temperature of the water intended to be discharged from said mixing chamber through said outlet, said controller means controlling said motor, in accordance with a predetermined relation between a temperature scale determined in said controller means and the position of said mixing valve in said mixing chamber, to move said mixing valve into a suitable position in order to discharge the water at said temperature selected at said input means; said mixing valve comprising a temperature-responsive actuator which adjusts the position of the mixing valve independently of the control of said controller means in response to the temperature of the water being discharged through said outlet for self-adjustment of the water temperature to said selected temperature; said system further including an initial compensation means which comprises: temperature sensor means for sensing the temperature of the water being discharged from said mixing chamber; positioning means for driving said motor to move said mixing chamber to a reference position; deviation detecting means which detects a deviation between the temperature of the water being discharged with said mixing valve at said reference position and the temperature designated at said controller means as corresponding to said reference position of said mixing valve; offset means for determining and storing an offset value which corresponds to the shifting amount of said mixing valve required to maintain said deviation within an acceptable level; compensation means for reestablishing, based upon said offset value, the relation between said temperature scale at said controller means and the position of said mixing valve within said mixing chamber in order to exactly associate the temperature to be selected at said controller means with the position of said mixing valve for discharging the water at a temperature as close as possible to the temperature to be selected at said controller means.