cold storage ice bag

Abstract

The invention discloses a cold-storage ice bag. The main liquid inlet channel and the main air inlet channel are located at the two ends of the outer membrane transversely, and there are multiple liquid storage chambers, hollow mold cavities and air storage chambers, all of which are arranged longitudinally on the liquid inlet main channel. Between the passage and the main inlet passage, and the two sides of each hollow cavity are respectively connected in parallel with the liquid storage chamber and the gas storage chamber. The chamber is connected to the main air intake channel through a one-way air intake branch channel; the cool storage agent includes water, potassium nitrate, sodium chloride, konjac fine powder, polyvinyl alcohol and borax. The invention discloses a cool-storage ice pack, which has both cold-storage effect and buffering effect, and can prevent frozen food or products from being mechanically damaged; the cool-storage agent in the invention is jelly-like at normal temperature, making it difficult for cold-storage food or products to be polluted by the cool-storage agent The cold storage agent in the present invention has a higher phase change potential and a lower phase change temperature, and the cold storage time is long, and at the same time, it can avoid the thermal damage of the refrigerated food or product.

Description

technical field [0001] The invention relates to the technical field of cold chain logistics, and more specifically relates to a cold storage ice pack. Background technique [0002] With the development of cold chain logistics, phase change cold storage technology has attracted widespread attention in the logistics circles of various countries. As a functional material in cold chain transportation, phase change cold storage materials are playing an increasingly important role. The application of phase change cold storage materials in the field of food cold chain logistics can not only extend the storage period of food, improve food quality, meet the needs of consumers, but also reduce the use of refrigerated trucks during storage and transportation, and reduce transportation costs. [0003] However, solid-liquid phase change materials are commonly used as cold storage agents at present, which are usually packaged in cold storage plates or cold storage ice packs. It is solid,...

AI Technical Summary

Problems solved by technology

[0003] However, solid-liquid phase change materials are commonly used as cold storage agents at present, which are usually packaged in cold storage plates or cold storage ice packs. It is solid, and it is easy to cause mechanical damage to refrigerated food or products in contact with perishable products;

[0004] Moreover, since the solid-liquid phase change material is generally used for the cold storage agent at present, it will change from solid to liquid during use. If the packaging is broken and leaks, it is easy to contaminate refrigerated food or products.

[0005] In addition, the latent heat of phase change of most of the current cold storage agents is around 200J / g, and there are relatively few cold storage agents above 290J / g, resulting in a short storage time. Even if the latent heat of phase change is satisfied, the phase change temperature range is relatively small. High, easy to cause heat damage to refrigerated food or products

For example, ice is commonly used as a cold storage material in the market. As a common solid-liquid phase change cold storage agent, ice has a low phase change latent heat of 335kJ / kg and a phase change temperature of 0°C. The temperature is -4°C, so the current cold storage agent is not ideal for keeping refrigerated food or products fresh

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