Water-using apparatus

A water-using apparatus including an electrical deionization unit configured to perform a deionization process in which ionic substances contained in water fed are removed from the water by causing electrodes to adsorb the ionic substances and a refreshment function in which the ionic substances adsorbed to the electrodes are released into the water, the water-using apparatus comprising:

• a water-feeding unit configured to feed water;
• a water-treating unit connected to the water-feeding unit by a pipe and being configured to perform a function in which the ionic substances contained in the water fed from the water-feeding unit are removed by the electrical deionization unit;
• a water-using unit connected to the water-treating unit by a pipe and configured to use the water having flowed through the water-treating unit;
• a drainpipe through which water with increased concentration of the ionic substances removed by the water-treating unit is drained;
• and
• a controller configured to control a passage for the water fed from the water-feeding unit based on a state of the water-treating unit regarding whether the water-treating unit is in a state in which the water-treating unit can perform the deionization process and a state of the water-using unit regarding whether the water-using unit is active, and to cause the water with increased concentration of the ionic substances to be drained through the drainpipe, the controller being configured to, upon activation of the water-using unit, check whether the water-treating unit is in the state in which the water-treating unit can perform the deionization process,
• wherein the water in the water-using unit is isolated from the water-feeding unit, and
• wherein the controller is configured to determine whether the water-treating unit is in the state in which the water-treating unit can perform the deionization process by checking:
• a time period of a last performance of the refreshment function,
• a time period of a last performance of the deionization process, or
• a history of performance of the refreshment function.

A water-using apparatus including an electrical deionization unit configured to perform a deionization process in which ionic substances contained in water fed are removed from the water by causing electrodes to adsorb the ionic substances and a refreshment function in which the ionic substances adsorbed to the electrodes are released into the water, the water-using apparatus comprising:

• a water-feeding unit configured to feed water;
• a water-treating unit connected to the water-feeding unit by a pipe and being configured to perform a function in which the ionic substances contained in the water fed from the water-feeding unit are removed by the electrical deionization unit;
• a water-using unit connected to the water-treating unit by a pipe and configured to use the water having flowed through the water-treating unit;
• a drainpipe through which water with increased concentration of the ionic substances removed by the water-treating unit is drained;
• and
• a controller configured to control a passage for the water fed from the water-feeding unit based on a state of the water-treating unit regarding whether the water-treating unit is in a state in which the water-treating unit can perform the deionization process and a state of the water-using unit regarding whether the water-using unit is active, and to cause the water with increased concentration of the ionic substances to be drained through the drainpipe, the controller being configured to, upon activation of the water-using unit, check whether the water-treating unit is in the state in which the water-treating unit can perform the deionization process,
• wherein the water fed by the water-feeding unit has not been treated by the water-treating unit, and
• wherein the controller is configured to determine whether the water-treating unit is in the state in which the water-treating unit can perform the deionization process by checking:
• a time period of a last performance of the refreshment function,
• a time period of a last performance of the deionization process, or
• a history of performance of the refreshment function.