The IQF Freezer's Evaporator

The IQF Freezer's Evaporator

The evaporator inside an IQF is a key component in the refrigeration system, used to evaporate the refrigerant (usually ammonia or Freon, etc.), absorbing the heat from the surrounding air and thus lowering the temperature inside the IQF. The evaporator is usually installed inside the freezer and is used in conjunction with the chiller and air duct system to ensure even air circulation and temperature reduction inside the freezer.

The main functions of the evaporator inside a quick freezer include:

Absorption of heat: The evaporator absorbs heat from the quick-freezing chamber through the process of refrigerant evaporation, resulting in a lower air temperature. As the refrigerant evaporates inside the evaporator, it absorbs heat from the air, making the surroundings colder.

Maintaining low temperatures: The function of the evaporator is to transfer the low temperature of the refrigerant to the air inside the chamber, ensuring that the temperature inside the quick-freeze chamber reaches the desired level, usually between -30°C and -40°C, for rapid freezing of food products.

Uniform refrigeration: The design and layout of the evaporator ensures uniform evaporation of the refrigerant and even distribution of the refrigeration effect in all corners of the quick-freezing chamber. This prevents foodstuffs from clumping or sticking together and maintains the individuality of the foodstuffs.

Preventing Frosting: The evaporator surfaces are often coated with special materials or anti-corrosion layers to reduce the possibility of frosting. Frosting can affect the performance of the evaporator, so it is important to take measures to prevent it.