Tunnel type liquid nitrogen quick freezing machine manufacturer ZDYT-YDS

Description :

　　Why choose liquid nitrogen as the refrigerant?

　　Liquid nitrogen is an environmentally friendly, colorless, transparent, and low viscosity liquid with stable chemical properties. It has a boiling point of -196.5 ℃ at atmospheric pressure, does not react chemically with frozen products, and is inert to food ingredients. Liquid nitrogen meets food hygiene requirements and is an ideal food preservative. The nitrogen content in the air is 78%, making it an inexhaustible and environmentally friendly refrigerant. Furthermore, by replacing the air that comes out of food, oxidation changes can be reduced to a smaller extent during freezing and packaging storage.

　　At standard atmospheric pressure, when liquid nitrogen absorbs heat and undergoes a phase transition to a gaseous state, it needs to absorb 199.29 KJ/KG of latent heat of vaporization, and then the low-temperature gas rising from -196.5 ℃ to -10 ℃ needs to absorb 202 KJ/KG of heat. Liquid nitrogen utilizes its heat absorption property to rapidly cool down, with a temperature difference of over 200 ℃. The intense heat exchange can cause frozen products to freeze instantly, forming a hard shell on the surface. The moisture inside the frozen products will not evaporate, resulting in a very low drying rate, almost zero. Due to the short freezing time of 5 to 10 minutes, which is 1/8 to 1/5 of the conventional freezing method, the ice crystals generated inside the frozen product are very fine and uniform, and the freezing speed is greater than the penetration speed of steam inside and outside the cell. Ice crystals are generated inside and outside the cell at the same time, without damaging the cell wall. Therefore, after thawing, the original color, aroma, taste, and freshness of the frozen product can be maintained. Liquid nitrogen quick freezing is currently one of the relatively advanced food quick freezing and preservation processes.

　　Single unit tunnel type liquid nitrogen quick freezing machine equipment - purpose

　　It is a large-scale quick freezing machine suitable for large-scale processing and production on factory assembly lines, with strong quick freezing ability; Easy to operate and highly automated. The series of liquid nitrogen quick freezing machines use heating technology, temperature control technology, and liquid nitrogen dispersion technology to ensure uniform and stable temperature control, constant temperature, and temperature reduction processes. Using liquid nitrogen as a refrigerant to meet cooling and environmental protection requirements. Quick freezing equipment comes in various specifications such as box type, cabinet type, tunnel type, etc., and can be designed and manufactured according to user requirements.

　　Note: This product is a customized device, and the product parameters and other descriptions on this platform are for reference only. Specific parameters and prices need to be determined according to customer needs. If you need to know specific parameters and prices, please consult our sales personnel.

AfterSalesService :

• Tunnel type freezer