The working principle of water dispenser
Hot water dispenser
Press the heating switch when using the warm water dispenser, and the power supply will provide the power supply for the “heat preservation” indicator lamp, which will be used as the power supply indicator.
At the same time, the power supply is divided into two ways: the heating circuit is formed all the way, so that the electric heat pipe is heated by electric heating.
Another way for the “heating” indicator lamp to provide the voltage for the heating indication.
When the water in the heat tank is heated to the set temperature, the thermostat contact is disconnected, the power of the heating and heating indicating circuit is cut off, the “heating” indicator is off, and the electric heat pipe stops heating.
When the temperature dropped to set temperature, the thermostat contacts connected power supply circuit, electric heat pipe to heat, so the cycle to keep the water temperature is between 85-95 ℃.
Tepid water dispensers for double protection circuit element, or short circuit fault occurs when water dispenser overtemperature, overtemperature fuse fuse or manual reset automatically thermostat automatic turnoff heating power circuit, protection.
Overtemperature fuse is one-time thermal protection components, reset, etc according to replace the original specifications after troubleshooting overtemperature fuse, reoccupy hand according to the manual reset button reset thermostats, contact closure can be back to work.
Hot and cold water dispenser
When using the semiconductor direct cooling cold and hot water dispenser, the direct cooling cold and hot water dispenser is provided with room temperature water by the water tank.
Then it goes all the way to the hot pot, and it heats the hot water.
After press the cooling switch, ac voltage by the power step-down transformer, rectifier diode full-wave rectifier and capacitor filter, the output dc voltage for cooling and ventilation fan semiconductor refrigeration components, at the same time, the refrigeration lights light up.
Since there is no automatic temperature control in the direct cooling water cooler, the refrigeration indicator light is always on after starting up.
Press the heating switch, the heating indicator lights up, the electric heat pipe heats up, and the water in the heat tank heats up.
When the water temperature rises to the specified temperature, the thermostat contact is disconnected, the heating power is automatically cut off, the heating indicator lights out, and the electric heat pipe stops heating.
When the water temperature drops to the required temperature, the thermostat contact is closed and the heating power is automatically switched on.
Then repeat the above process, make the water temperature constant temperature between 85-95 ℃.
Compressed refrigeration water dispenser
When pressing the compression refrigeration water cooler cooling switch, refrigeration and the green light is lit, the compressor is up and running, will have the evaporator heat gasification of refrigerant steam back, and then compressed into high temperature and high pressure gas, sent to the condenser, the condenser cooling condensation in the air to the world into a high pressure liquid, then through capillary throttling depressurization flows into the evaporator, cold gallbladder heat and make the water temperature drop, and then back by compressor.
Such a cycle, to achieve the purpose of cooling.
When the water temperature drops to the set temperature over time, the contact point of the refrigeration thermostat is disconnected, the cooling green indicator is off, the compressor is stopped, and the temperature is transferred to the thermal insulation condition.
After the power is off, the water temperature rises gradually. When it rises to the set temperature, the contact of the refrigeration thermostat is closed.
So, to control the temperature between 4 to 12 ℃.
Press the heating switches, heating circuit connected, red heating lamp light, heating, electric heating tube to our specified temperature, automatic reset thermostats, cut off power supply, heating the red light is put out, turn into heat preservation condition.
After the power is off, the water temperature drops gradually. When the temperature drops to the set temperature, the thermostat contacts and closes.
So, to control the temperature between 85-95 ℃.
The temperature fuse of the safety device and the manual reset thermostat are protective devices in such water dispensers. When the circuit overheats or overloads, it will automatically fuse or disconnect the circuit, thus providing safety protection.
Air-cooled water cooler
Air cooling is a way of cooling, using air as a medium to cool objects that need cooling.
This is usually done by increasing the surface area of the object that needs to be cooled, or by increasing the rate at which air flows through the object per unit of time, or by using both methods.
The former can be achieved by adding a heat sink on the surface of the object, usually hanging the heat sink outside the object or fixed on the object to make heat dissipation more efficient.
The latter can be used fan (fan) to enhance ventilation, strengthen cooling effect.
In most cases, the cooling efficiency can be greatly improved by adding cooling fins.
In any case, the air than on the surface of the object and its temperature is low, can take away heat, this is due to the second law of thermodynamics, which could not take heat from low temperature object to high temperature without causing other changes.
