When the water temperature in the collector B reaches to that in the reference water heater C, a temperature controller D, which receives the outputs of respective temperature sensors 18 and 20, opens a control valve 23 in order to escape the hot water in the collector B into a storage ...
heater; a strainer capable of being placed in the cooking pot and receiving materials; a water outlet connector; an inlet valve, arranged to operably control timing of outputting cold water or hot water from the water outlet connector; and a drain valve, arranged to operably control timing ...