Water dispenser is also know as water cooler. The water dispenser cooling system is used to cool water for drinking purpose. There are three main different types of water dispense cooler on the market, Storage type water cooler, Instantaneous type water cooler and Bottle type water cooler. Different types of water cooler, different cooling systems.
Storage-type water cooler means a water cooler where the water is stored in a tank. For storage-type water cooler, the storage tank is surrounded by an evaporator coil through which flows a low-temperature liquid refrigerant which takes away the heat of water then makes it cold.
The figure above shows the storage type water dispenser cooling system structure diagram , it is a vapour compression refrigeration system, consisting of refrigeration compressor, condenser, condenser fan motor, filter, capillary, evaporator coil. When the vapour compression cooling system starts to operate, the heat of water is take up by the refrigerant flow through evaporator coil and gets evaporated.
Compressor/Condenser/Capillary/Evaporator
Compressor is the most important component of vapour compression refrigeration system. The function of refrigerator compressor is to compress the R134A or R290 refrigerant to high temperature high pressure vapour.
Capillary is one kind of expansion device. The capillary tube will control the refrigerant flow by the pressure drop across it in a refrigeration system. The small refrigeration system generally use capillary as the expansion device.
The function of water dispenser condenser is to receive the high-pressure gas from the refrigerator compressor and convert this gas to a liquid by transferring the heat to the air by the fan motor. It is a air cooled condenser.
This low-pressure low temperature refrigerant then extracts heat of water from the evaporator tank. By taking heat from water refrigerant evaporates and this vapour refrigerant sucked by compressor and process continues.
In instantaneous type water cooler, the evaporator consists of two separate cylindrical wound coils made of copper or stainless tube. The evaporating refrigerant is in one of the coils as cooling coil and the water in the stainless coil. As soon as the water enters into the stainless coil, it gets cooled by the cooling coil instantaneously.
The water in instantaneous type water cooler is cooled by a vapour refrigeration absorption system same as the storage type water cooler. The main difference is storage type water cooler has a tank, the evaporator coil is wrapped the storage tank; while the instantaneous type water cooler has not. In the instantaneous type water cooler, the evaporator coil is directly wounded on the stainless coil. When the low temperature liquid refrigerant flows through the evaporator coil, the water in the stainless coil will be cooled directly.
The water dispenser cooling system consists of:
As leading manufacturer and supplier of refrigeration condensing unit manufacturers, Glen refrigeration offers refrigerator condensing unit for water dispenser cooler. The refrigerator condensing unit is consisting of Cubigel/Huayi R290 compressor, high efficiency fin tube condenser, EBM fan motor, filter dryer.
Glen Refrigeration also offers:
Professional rotary compressor and condensing unit manufacturer & supplier in China-Glen Refrigeration
We will contact you within 8 hours. Please pay attention to the email with the suffix “@greehvacr.com”.
