The direct-cooling hot and cold water dispenser is provided with room temperature water from the water tank, and the water enters in two ways: one way enters the cold gallbladder container, and the cold water is refrigerated; the other way enters the hot tank, and the hot water is heated.
After pressing the refrigeration switch, the AC voltage is stepped down by the power transformer, the rectifier diode is used for full-wave rectification, the capacitor is filtered, and then the DC voltage is output for the refrigeration of the semiconductor refrigeration component, and the exhaust of the fan. At the same time, the refrigeration indicator light is on. Since the direct-cooled hot and cold water dispenser does not have automatic temperature control, the cooling indicator light is always on after it is turned on.
Press the heating switch, the heating indicator lights up, the electric heating tube heats up, the water temperature in the hot tank rises and reaches the set temperature, the thermostat contacts are disconnected, the heating power is automatically cut off, and the heating indicator light goes out, and the electric heating tube stops heating. When the water temperature drops to the set temperature, the contact of the thermostat is closed, the heating power is automatically turned on, the heating indicator light is on, and the electric heating tube heats up. Then repeat the above process to keep the water temperature constant between 85-95°C.