LN2 Quick Freezing and Low-Temperature Cooling Equipment
Dongguan Kunning Low Temperature Equipment Co., Ltd. — from equipment solutions to on-site commissioning, we configure the right quick freezing and chilling equipment for food processing enterprises.
Product Center
Four equipment lines, covering both the LN2 quick freezing and forced cold-air cooling process routes.
Immersion Chiller
Rapid cooling equipment that exchanges heat directly through a liquid medium, customized to the material and production line rhythm.
LN2 Blast Freezer
Three specifications — QF300 / QF600 / QF1200 — working temperature from -150℃ to room temperature, temperature control accuracy ±1~±2℃.
LN2 Tunnel Freezer
Mesh-belt continuous production line, tunnel mesh belt 6000×1200 mm, infeed/outfeed cycle adjustable from 6~30 minutes.
Blast Chiller
Dual-cabinet forced cold-air circulation, minimum -45℃ inside the cabinet, about 200 kg per batch, rapid cooling for cooked food and bakery products.
Equipment Configuration Features
Food-Grade Stainless Steel Cabinet
The inner and outer chambers of the freezer are formed from sheared, bent and welded SUS304 food-grade stainless steel plate, with reinforcing ribs at load-bearing positions.
150 mm Low-Temperature Insulation
Multi-layer foamed low-temperature insulation, 150 mm thick; ultra-low-temperature sealing rings at the joints between inner and outer chambers do not harden at low temperatures and can absorb the cold-shrinkage stress of the inner box.
Imported Electrical Components
The blast freezers are equipped with German Siemens PLC and touch screen, German Heraeus PT100 platinum resistance sensors, and French Schneider relays and contactors.
Safety Interlock Design
The LN2 tunnel freezer is equipped with an oxygen concentration detector (set at 19.5%~21.5%); when oxygen concentration is too low, the solenoid valve closes automatically and the exhaust fan keeps running.
Lift-Type Body Structure
The tunnel body adopts an integral lifting design, with a maximum lift height of 550 mm and an inner chamber of 750 mm, facilitating parts replacement and maintenance.
Self-Adaptive Tensioning Device
The tunnel conveyor belt is equipped with a self-adaptive tensioning device that maintains operating tension at low temperatures, balancing mesh-belt life and smooth operation.
Industries
LN2 quick freezing uses liquid nitrogen at -196℃ to exchange heat directly with food. The food passes rapidly through the 0℃～-5℃ maximum ice crystal growth zone, forming fine ice crystals and reducing drip loss.
Seafood Processing
Shrimp, fish fillets, fish heads, abalone, sea cucumber, oysters
Meat & Poultry
Beef and mutton, lamb skewers, poultry cuts
Prepared Food
Prepared dishes, central kitchen finished products, skin-pack semi-finished products
Bakery
Rapid cooling of bread, cakes, mooncakes
Fruit & Vegetable
Freshness-locking quick freezing of bamboo shoots and fruit & vegetable materials
Juice & Beverage
Rapid freezing of juice materials and fruit pulp
About Kunning
Dongguan Kunning Low Temperature Equipment Co., Ltd. was founded in 2024 and is located in Humen Town, Dongguan City, Guangdong Province. We focus on the R&D, manufacturing and sales of LN2 quick freezing equipment and low-temperature cooling equipment, while also providing customers with ultra-low-temperature freezing and quick freezing technical solutions.
Our equipment can be configured in combination according to the customer's product form, capacity and process requirements, covering cabinet, chamber and tunnel types among other models, and we design and manufacture customized products according to user requirements.
In the Southeast Asia market, LTN IMPORT EXPORT TRADING COMPANY LIMITED (Vietnam) acts as our regional agent, handling after-sales service and market promotion as well as equipment sourcing and import/export arrangements.
Customer Reviews
The LN2 blast freezer was configured to our shrimp specification. Temperature from inlet to outlet is stable and batch-to-batch variation is small. Commissioning and operator training were followed up after delivery.
The tunnel line was adjusted to our throughput rhythm. Belt speed and dwell time are adjustable, so switching products does not require stopping the line for modifications.
The blast chiller solved our post-baking cooling time issue and temperature distribution inside the cabinet is even. Parameter discussions took some time up front, but operation has been stable since delivery.
Need a quick freezing solution for your product?
Tell us the material type, weight per batch, infeed temperature and target temperature, and we will provide a configuration plan and quote based on the actual situation.
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