Vegetables And Fruits Thermostatic Freezing Machine Fruit And Vegetables Preservation Freezer Seafood Frozen Meat Freezer Low Temperature Mobile Freezer

Vegetables And Fruits Thermostatic Freezer Fruit And Vegetables Preservation Freezer Seafood Frozen Meat Freezer Mobile Freezer

Seafood Frozen Meat Freezer Low Temperature Mobile Freezer

Quick-freezing cold storage usually requires relatively large "refrigeration equipment. The refrigerating capacity of the equipment is proportional to the quick-freezing capacity of the food and inversely proportional to the quick-freezing time. The quick-freezing warehouse is to quickly pass the food through its maximum ice crystal formation area, and the center temperature reaches -18 ℃. Freeze quickly.

Food will undergo various changes during the freezing process, such as physical changes (volume, thermal conductivity, specific heat, dry consumption changes, etc.) chemical changes (protein denaturation, color change, etc.) cell tissue changes and biological and microbial changes Wait. The quick-frozen food maintains the original nutritional value, color and aroma of the food to the greatest extent during the freezing process.
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Quick-frozen foods have the following advantages:
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1. Avoid the formation of large ice crystals between cells;
​​2. Reduce the water separation in the cells, and reduce the loss of juice during thawing
3. The time for concentrating solutes, food tissues, colloids and various components in contact with each other in the cell tissue is significantly shortened, and the harm of concentration is reduced to a minimum;
​​4. Quickly reduce the food to the temperature of microbial growth activity, which is beneficial to resist the growth of microorganisms and their biochemical reactions;
​​5. The food stays in the cold storage for a short time, which is beneficial to improve the utilization rate and continuous production efficiency of the refrigeration equipment.

The adiabatic cold storage is equipped with a mechanical cold storage unit, and according to the requirements of fruit varieties for storage temperature, humidity and ventilation, the cold storage system is artificially adjusted and controlled, so the storage time is longer and the effect is good.

A. The principle of cold storage refrigeration. The mechanical cold storage uses a liquid (refrigerant) with a very low vaporization temperature to evaporate it into a gas under low pressure, and the cold storage absorbs heat to achieve the purpose of cooling. In addition to low boiling point, refrigerants for cold storage are also required to be harmless to the human body, have no corrosive effect on metals, have no danger of combustion and explosion, and have no chemical reaction with lubricants. More heat, low pressure in high pressure condensing system, low viscosity and cheap price, etc.

1. Warehouse body materials The cold storage body is mainly composed of various thermal insulation panels, namely thermal insulation wall panels (walls), roof panels (patio panels), bottom panels, doors, support panels and bases.
2. The thickness of the library board is generally 150mm and 100mm.
3. It has four properties of strict sealing, moisture-proof and heat-insulation, firmness and frost resistance.
4. The refrigeration unit is the heart of the refrigeration equipment of the small cold storage. It adopts the imported Copeland compressor head, which has stable operation, low energy consumption, strong refrigeration, low noise, safety and reliability. 5. The cold storage can be fully intelligently controlled electronically, with the functions of temperature setting, temperature control and automatic defrosting.
5. Mainly used for frozen processing and refrigeration of food, the size of the cold storage can be customized according to customer requirements. The size of the refrigerator is not fixed.

Cold storage use:
1. The cold storage has a wide range of storage items, such as fruits, vegetables, eggs, meat, dairy products, medical supplies, seafood, ice cream, etc.
2. The cold storage is further divided into five workflows: cooling room, freezing room, cooling room refrigerating, freezing room refrigerating and freezing room.

Small cold storage is divided into indoor type and outdoor type:
1. The ambient temperature and humidity of the outdoor type: the temperature is +35℃; the relative humidity is 80%.
2. Indoor setting temperature: fresh-keeping cold storage: +5～-5℃;
Cold storage: -5～-20℃;
Low temperature cold storage: -25℃