● Fast & Efficient: Ultra‑low temperature of liquid nitrogen completes food freezing in a short time.
● High Flexibility: Compact footprint, suitable for diverse food processing and ideal for SMEs.
● Quality Retention: Locks moisture and nutrition to preserve optimum texture and taste.
● Energy‑saving & Eco‑friendly: As a natural refrigerant, liquid nitrogen is harmless to the environment and meets sustainable production requirements.
The liquid nitrogen batch freezer is mechanical equipment specially designed for food quick‑freezing. Using liquid nitrogen as the cooling medium, it rapidly freezes food at ultra‑low temperatures to retain the flavour, colour and nutritional components of products. It is widely used in the food processing industry, especially for applications with high requirements on frozen food quality.
Process Flow
1.Raw Material Preparation: Food raw materials shall undergo necessary pretreatment such as washing, peeling and cutting before loading, to ensure cleanliness and uniformity.
2.Loading into Cabinet: Place pretreated food evenly on the freezer shelves to ensure full contact of liquid nitrogen with all parts of products.
3.Liquid Nitrogen Injection: Start the unit. Liquid nitrogen is injected into the cabinet, quickly bringing the internal temperature down to ‑196°C.
4.Rapid Freezing: Under ultra‑low‑temperature conditions, food passes rapidly through the zone of maximum ice‑crystal formation. The cell structure remains intact, moisture loss is reduced, and the texture and nutrition of food are well preserved.
5.Freezing Completion: Once freezing is finished, take out the food for subsequent packaging and storage.
Custom sizes available for actual production capacity: single‑door, double‑door, three‑door or multi‑door configurations.
| Model | Freezing Chamber Dimension (Dual‑chamber) (mm) | Dimension (m) | Volume（L） |
| MDG-100 | 450×450×500 | 1100×1650×1150 | 100L×2 |
| MDG-150 | 500×500×600 | 1150×1700×1250 | 150L×2 |
| MDG-250 | 600×600×700 | 1250×1800×1350 | 250L×2 |
| MDG-280 | 600×600×800 | 1250×1800×1450 | 288L×2 |
| MDG-320 | 600×600×900 | 1250×1800×1550 | 324L×2 |
| MDG-490 | 700×700×1000 | 1350×1900×1650 | 490L×2 |
| MDG-640 | 800×800×1000 | 1450×2000×1650 | 640L×2 |
| MDG-1000 | 1000×1000×1000 | 1650×2800×1650 | 1000L×2 |
| MDG-1200 | 1000×1000×1200 | 1650×2800×1850 | 1200L×2 |
| MDG-1500 | 1000×1000×1500 | 1650×2800×2150 | 1500L×2 |
| MDG-1800 | 1000×1000×1800 | 1650×2800×2450 | 1800L×2 |
| MDG-2000 | 1000×1000×2000 | 1650×2800×2650 | 2000L×2 |
