Tunnel type liquid nitrogen quick freezing machine manufacturer

Description :

Chengdu Zhuoda Yuntong Tunnel style Liquid Nitrogen Freezing Machine

The tunnel type liquid nitrogen freezer uses liquid nitrogen as a refrigerant to directly freeze food. The principle of liquid nitrogen freezing is to spray low-temperature liquid nitrogen directly onto the food, and use its extremely low temperature (-196 ℃) of vaporization under normal pressure and high heat transfer coefficient of vaporization directly on the surface of the material to quickly and deeply freeze the food. It has been widely used in various types of food.

Introduction and characteristics of tunnel type liquid nitrogen quick freezing machine
1. Adopting a simple and easy to clean design pattern, there is no need to shut down for defrosting, and continuous manufacturing increases production intensity;
2. The working temperature of the liquid nitrogen freezer can be set arbitrarily between -30 ° C and -120 ° C, and can freeze various vegetables, meats, fish, whole fish, fruits and vegetables, buns, real-time fast food, and baked goods.
3. The control technology system consists of Siemens PLC programmable control host, Schneider Electric components, touch screen operation, remote alarm device, frequency converter, and other components;
4. The application adopts a touch screen control panel, which is easy to learn and has clear operation data for the one click start mode. Instead, the running speed and freezing temperature can be adjusted in advance, and remote monitoring of temperature changes inside the freezing tunnel can be carried out;
5. The cold circulation and exhaust system inside the tunnel will be replaced by a specialized motor and low-temperature fan (patented technology) to form a quick freezing tunnel machine. The high-temperature fan inside the tunnel does not need to be stopped for defrosting and can operate continuously without being frozen. On the other hand, it ensures that the meat is quickly and evenly frozen and the refrigerant is maximally utilized;
6. The amount of liquid nitrogen required for quick freezing, based on the settings, automatically adjusts the humidity valve, and opens the tilt angle. When ensuring uniform temperature inside the tunnel, it maximizes the savings in liquid nitrogen usage in my opinion;
7. The top cover of the quick freezing machine tunnel can be lifted and lowered in parallel. The upper inner groove adopts an inclined collection and drainage structure, which can fully clean the inside of the tunnel and ensure the hygiene and safety of frozen food;
8. The quick freezing machine adopts a segmented design, making on-site lifting and assembly quick and convenient.
Tunnel type liquid nitrogen quick freezing machine
1. The quick freezing machine needs to quickly freeze the frozen and item center temperature to -18 ° C within a short period of time, and quickly pass through the ice crystal production belt within 30 seconds to reduce carbohydrate loss and preserve the original flavor.
2. Generally, it includes a nitrogen transfer pipe, with two of the nitrogen transfer pipes connected to a non nitrogen machine. In my opinion, the nitrogen transfer pipe and one end can be surface connected to the freezer on the casing. The casing is a hollow parallel column or ground, and is connected to the top and base. The base is equipped with a conveyor belt on the upper surface, which is parallel to the ground. The casing and sides are equipped with movable plates, which can have movable slots. The movable plate is equipped with positioning bolts, which are inserted into the movable slots and connected to the casing.
3. However, especially during the freezing process of the freezer, when food is poured onto the conveyor belt, the distribution of food is uneven. After entering the internal structure of the freezer, nitrogen cannot fully freeze the food. Therefore, especially before the food enters the freezer, it is necessary to immediately evenly distribute the food, especially on the conveyor belt, in order to completely freeze most of the food.
Medium sized fixed shelf cabinet liquid nitrogen quick freezing machine
1. Built in fixed shelves, customizable layer height spacing, 10-15 quick freezing times for eight 40 * 60cm pallets.
2. Generally speaking, it is suitable for the development of fish, sea cucumber, abalone stores, multi-purpose central kitchens, and frozen food factories, such as research on frozen food projects in universities.
3. Single door/double door cabinet type liquid nitrogen quick freezers generally have built-in movable carts. Each set of carts uses fixed shelves. The size and number of trays, such as floor height spacing, need to be customized. They are often suitable for self cooking several types of rice and flour foods and prefabricated potted vegetables, such as steamed buns, crayfish, Mantou, Steamed rolls, potted vegetables (Maoxuewang, boiled fish, etc.). The steaming bag or cart video that needs to be realized is fast and efficient.
4. Along with various dishes such as liquid nitrogen frozen crayfish, durian, tuna fillet, and more.
How to choose liquid nitrogen as the refrigerant?
1. It is a yellow green transparent low viscosity liquid with stable chemical properties. In my opinion, liquid nitrogen has a boiling point of -196.5 ℃ at atmospheric pressure and does not undergo phase transition with frozen products. Therefore, it is inert to food ingredients. Liquid nitrogen meets food hygiene requirements and is an ideal food preservative in my opinion. Nitrogen needs to be extracted from the air, with a content of 78%. It can be said that nitrogen is the source or energy-saving and emission reducing refrigerant.
2. Although it replaces the air that comes out of food and can minimize oxidative changes during freezing, such as storage with packaging.
3. Especially 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. In my opinion, it is better to let it rise from -196.5 ℃ to -10 ℃. In short, low-temperature gases need to absorb 202 KJ/KG of heat.
4. Liquid nitrogen utilizes its ultra-low temperature heat absorption properties to rapidly cool down, with a temperature difference of up to 200 ℃. In my opinion, heat exchange can cause frozen products to freeze from water droplets, forming a hard shell on the surface. The moisture in the frozen product system will not evaporate, resulting in a very high freezing or drying rate, even though it is equivalent to zero.
5. Because the freezing time is extremely short, ranging from 5 to about 10 minutes, which is a conventional freezing method and 1/8 to 1/5, the internal structure of the frozen product is generated and the ice crystals are very fine and uniform. The freezing speed exceeds the speed of steam penetration inside and outside the cell, and the new and old cells generate ice crystals, which are not destructive to the personal cell wall. Even after thawing, the frozen product can maintain its original color, aroma, taste, and freshness. Liquid nitrogen quick freezing is currently the company's advanced food quick freezing and preservation technology. In my opinion, the three major processes are food quick freezing and preservation.
Tunnel type liquid nitrogen quick freezing machine - purpose
1. Tunnel type liquid nitrogen quick freezing machine is a machine suitable for large-scale processing and production on factory assembly lines, with strong quick freezing ability.
2. High precision.
3. The above-mentioned replica liquid nitrogen quick freezing machine adopts Dailai heating technology, temperature control technology, and liquid nitrogen dispersion technology to ensure uniform and stable temperature control, constant temperature control, and temperature reduction during each process.
4. Using liquid nitrogen as a refrigerant to meet cooling and environmental protection requirements.
5. Quick freezing equipment comes in box, cabinet, tunnel, and various types and specifications, which can be designed and manufactured according to user requirements.

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• tunnel type liquid nitrogen quick freezing machine manufacturer
• tunnel type liquid nitrogen quick freezing machine manufacturer
• tunnel type liquid nitrogen quick freezing machine manufacturer