The common refrigeration methods used in quick-freezing machines include the following:
Compressor Refrigeration: This is the most common method. It uses a compressor to compress the refrigerant into a high-temperature, high-pressure gas, which is then condensed into a liquid by a condenser. After being depressurized by a throttling device, it enters the evaporator, absorbing heat from the surrounding environment to achieve cooling. This method is highly efficient, technologically mature, and allows for precise temperature control, making it widely used in various types of quick-freezing machines.
Liquid Nitrogen Refrigeration: Liquid nitrogen has an extremely low temperature. When injected into the quick-freezing machine, the liquid nitrogen rapidly vaporizes, absorbing a large amount of heat and quickly cooling the food. This refrigeration method provides extremely fast cooling and can preserve the nutritional components and taste of food to the greatest extent.
Dry Ice Refrigeration: Dry ice sublimates and absorbs a large amount of heat, thus achieving cooling. Dry ice refrigeration is convenient to use and requires no complex equipment.
