Liquid Nitrogen Tunnel Freezer

Product Overview:
The ultra-low temperature liquid nitrogen tunnel quick-freezing machine is an integrated lifting liquid nitrogen tunnel freezer. It primarily consists of a base, upper and lower insulated boxes, lifting system, conveyor belt system, liquid nitrogen injection system, control system, nitrogen exhaust system, and a low-level alarm system. The insulation boards are made of polyurethane foam with stainless steel panels on both sides. The material is conveyed using a stainless steel mesh belt driven by a variable frequency motor. The equipment can be lifted for easy maintenance and cleaning. The tunnel is composed of pre-cooling, spray, and temperature-equalizing sections. Vaporized low-temperature nitrogen is extracted by an exhaust fan, allowing materials on the stainless steel mesh belt to undergo countercurrent heat exchange with low-temperature nitrogen gas through fan agitation and exhaust suction. For freezing 1 kg of food, liquid nitrogen consumption varies between 1-1.6 kg depending on the type and size of the material.

Product Features:

● Ultra-Low Temperatures: Reaches temperatures as low as -196°C, with short freezing times, high output, and efficient operation.

● Energy Efficiency: Lower energy consumption compared to traditional freezing methods, with minimal cooling loss and reduced operating costs.

● Liquid Nitrogen Consumption: Between 1:1 to 1.6 ratio for liquid nitrogen use.

● Extended Preservation: Keeps food fresh for up to 12 months, enabling off-season sales and increasing economic value.

● Minimal Drip Loss: Foods maintain their original flavor upon thawing.

● Compact Design: Takes up less space and uses less power compared to traditional cold storage.

● Cost-Effective: Requires less investment, saving over 50% compared to traditional quick-freezing systems.

● Modular Design: Allows easy expansion to increase capacity.

● Safe and Hygienic: Uses liquid nitrogen for refrigeration, ensuring no pollution. The oxygen-free environment inhibits microbial growth.

● Preservation of Food Quality: Prevents cell wall rupture and maintains uniform texture, keeping flavor consistent after thawing.

● Extended Shelf Life: Frozen foods resist oxidation and have a shelf life more than three times longer than conventional freezing equipment.

● Safety Features: Equipped with a standard oxygen concentration monitor to ensure the safety of operators and the production environment.

● User-Friendly Interface: Features a human-machine interface and PLC automatic control system with both automatic and manual modes for straightforward and intuitive operation.

● Easy to Clean and Maintain: Simple one-button operation eliminates complex settings.