Quick-frozen cold storage

Main parameters:

The construction of quick-frozen cold storage is generally used in conjunction with the design of low-temperature cold storage and ultra-low-temperature cold storage. Rapid freezing reduces the temperature of items to the temperature of microbial long-term activity, thus resisting the growth of microorganisms and their biochemical reactions. Simply put, the role of the construction of low-temperature quick-frozen storage is to quickly freeze the storage items and resist a series of reactions to the items. Rapid freezing of food has the following advantages:(1) avoid the formation of large ice crystals between cells (2) reduce the extraneous water in cells, and reduce the loss of juice during thawing (3) the contact time between concentrated solute in cell tissue and food tissue, colloid and various components is significantly shortened, and the harmfulness of concentration is reduced to the lowest level (4) rapidly reduce food to the temperature of microbial growth activity, it is beneficial to resist the growth of microorganisms and their biochemical reactions (5). The short residence time of food in freezing equipment is beneficial to improve the utilization rate of equipment and continuous production. Most foods begin to freeze when the temperature is reduced to -1 ℃, and most ice crystals are generated between -1 ℃ and -5 ℃. This stage is called the highest ice crystallization generation stage. Rapid freezing can greatly shorten the freezing time at this stage, and this part of heat can be removed at the fastest speed, which is of great significance to improve the quality of quick-frozen food.

how selection of frozen cold storage equipment:

1. Evaporator selection: The system in the warehouse has two modes: fan and exhaust pipe. DJ low-temperature air cooler is mostly used for evaporator selection (it does not occupy the use space of the cold storage and can quickly cool the stored items to meet the expected requirements). It is suitable for the warehouse temperature of about -25 degrees and is mainly used for quick-frozen poultry, seafood and dairy products to maintain the nutritional components of food to a greater extent. Can also choose three finned aluminum tube, the number of meters required, the cooling effect is good or shelf tube.

2. The refrigeration system outside the warehouse has two ways: air cooling and water cooling. Air cooling: with fan cooling unit, suitable for all kinds of environment. Water cooling: water to cool the unit, the advantage is energy saving, cooling effect is good, but only suitable for use in the south, the temperature is low in the north, the water is easy to freeze, not suitable for use.

3. The selection of cold storage unit is the most important, the need to use professional software, according to the storage temperature, storage volume, required shipping time, shipping temperature to carry out professional calculation, so as to obtain the required cooling capacity for compressor power selection. Choosing a high-quality compressor unit can not only bring excellent cooling effect but also save a lot of electricity.

Key advantages:

1. The quick-freezing cold storage of Changzhou Xuedong Refrigeration Equipment adopts advanced engineering design, advanced production technology, and strict quality assurance management to ensure that the products are checked at every production link, so that the user's requirements become a reality.

2. The thickness of the thermal insulation warehouse of quick-freezing cold storage is generally 150mm and 200mm. The board is filled with polyurethane thermal insulation material. Both sides are plastic-coated color steel plates or stainless steel plates. The color steel plate surface is processed into invisible grooves. It is light in weight, high in strength, good in thermal insulation performance, corrosion resistance and aging resistance. The library board is simple and quick to assemble and is one of the best materials selected for thermal insulation warehouse body of cold storage.

3. The quick-freezing cold storage adopts advanced microcomputer control system and advanced control method, and the liquid crystal displays the temperature, startup time, chemical box time, fan delay time, alarm indication and various technical parameters in the library. The operation is simple and the user is very convenient.

4. The main components of the frozen cold storage are imported international famous brands, which ensure the reasonable configuration of the cold storage, stable operation, good insulation performance, low consumption and high energy, excellent quality.

5. The external dimensions of the frozen cold storage, the temperature of the storage, the location of the unit, the opening of the library door, the layout of the library, etc., all of which can be customized according to the specific requirements of users. Maximum to meet the needs of users.