Why can drinking fountains have hot water and cold water at the same time?
When the water temperature drops to the setting temperature, the temperature controller contacts the power circuit, and the electric heating tube re heating, so that the water temperature is kept between 85-95 DEG c..When the water heater is over temperature or has short circuit fault, the overtemperature protector is automatically fused or manually reset, and the temperature controller automatically disconnects the heating circuit power supply to play a protective role. Over temperature fuse is a one-time thermal protection element can not be reset, etc. after troubleshooting change over temperature fuse new according to specifications of the original model, and then hand to press the reset button manual reset thermostat, contacts can start work again.
2 、 compression type refrigerating water dispenserWhen you press the compression refrigeration water dispenser refrigeration refrigeration switch, the green light will start running, the compressor, the refrigerant vapor in the evaporator is endothermic gasification sucked back, and then compressed into high temperature and high pressure gas, sent to the condenser, the condenser to the outside air cooling condensed high pressure liquid, then by capillary throttling flow into the evaporator in the cold and heat absorption of bile the temperature dropped, then being sucked back into the compressor. This cycle, to achieve the purpose of cooling. When the water temperature drops to the set temperature with time, the contact point of the refrigeration temperature controller is switched off, the refrigeration green indicator lamp goes out, the compressor stops and transfers to the thermal insulation condition. After the power failure, the water temperature rises gradually. When the temperature rises to the set temperature, the contact of the refrigerating thermostat is closed, the power supply is switched on, the green indicator light is on, and the compressor runs. In this way, the water temperature is controlled between 4-12 degrees centigrade.Press the heating switch, heating circuit, heating the red indicator light, the electric heating tube heating, when the water temperature rises to the set temperature, the automatic reset temperature control action, cut off the power, the red light goes into heating, insulation condition. After the power failure, the water temperature gradually drops, and when the temperature is lowered to the setting temperature, the temperature controller contact action is closed, the power supply is switched on, and the red heating indicator is turned on, and the electric heating tube heats up again. In this way, the water temperature is controlled between 85-95 degrees centigrade.
1 、 semiconductor direct cooling hot and cold water dispenserSemiconductor direct cooling type drinking water machine in use, direct cooling type water dispenser with tepid water from the water tank, the water is divided into two lines: one way into the cold container, after cooling cold water; another way into the hot pot, heated by hot water.Press the switch after cooling, AC voltage by the power transformer step-down, rectifier diode for full wave rectifier and capacitor Lv Jiaxing water purifier wave, the output DC voltage for the semiconductor refrigeration component cooling and exhaust fans, at the same time, the refrigeration indicator lights. Since the direct cooling hot and cold water dispenser is not equipped with automatic temperature control, the cooling indicator lamp is always on when the power is turned on.The heating switch is pressed, the heating indicator is bright, the electric heating tube is heated, and the water in the hot pot is heated up. When the water temperature is known to set the temperature, the temperature controller contacts are disconnected, the heating power is automatically cut off, the heating indicator is turned off, and the electric heating tube is stopped heating. When the water temperature drops to the setting temperature, the temperature controller contacts are closed, the heating power supply is automatically connected, the heating indicator is bright, and the electric heating tube is heated. The process is repeated so that the water temperature remains constant between 85-95 degrees centigrade.
Hot water and cold water are separated, and the water used for heating is in another container.When the hot water dispenser is used, the heating switch is pressed, and the power supply is provided for the heat preservation indicator lamp to be used as an electric indication. At the same time, the power supply is divided into two paths: a heating circuit is formed; the electric heating tube is electrified and the temperature is raised; the other way is a heating indicator; the voltage is supplied as a heating indicator. When the water in the hot pot is heated to the set temperature, the temperature controller contacts are disconnected, the heating and heating indicating loop power supply is cut off, and the heating indicator lamp is extinguished, and the electric heating tube is stopped to heat.
