Energy-saving compound air-conditioning device for food freezing and thawing device

Abstract

The invention provides an energy-saving compound air-conditioning device for a food freezing and thawing device, and the device comprises three circulations which are a solution dehumidification circulation system, a refrigeration working medium circulation system and an air circulation system for a freezing room and a thawing room respectively. The food freezing and thawing process is as follows: air entering into the freezing room firstly passes through a solar solution dehumidification system for dehumidification and enthalpy drop and further is processed into low-temperature saturated air through an evaporator to cool food, the air out of the freezing room firstly passes through a heat exchanger for carrying out heat exchange with return air of the thawing room under the actin of a fan, then passes through an atmospheric condenser for heating and humidification and further passes through a second-path evaporator in the thawing room for further temperature adjustment and humidity adjustment so as to carry out thawing treatment on the food, an electric heater behind the heat exchanger is used as an air temperature rising auxiliary device, and the return air passing through the thawing room of the heat exchanger enters into the solution dehumidification system for processing and is further sent into the freezing room for realizing the whole circulation under the actin of the fan. The energy-saving compound air-conditioning device is mainly applied in food freezing and thawing compound systems, and has great energy-saving effect.

Description

technical field [0001] The invention relates to an air conditioning process and device for food freezing and thawing, and belongs to the technical field of food cooling storage and thawing. Background technique [0002] In recent years, with the rapid development of the food industry, people's consumption of frozen food is constantly expanding, and the quality requirements of frozen food are also getting higher and higher. However, food freezing and refrigerating enterprises are large consumers of electricity. According to statistics, the power consumption of food freezing and refrigerating processing will account for 68% of the electricity consumption of the entire enterprise. How to reduce processing energy consumption on the premise of ensuring the quality of frozen products is a common concern of refrigeration and refrigeration enterprises. [0003] Freezing and thawing are important operating procedures in food freezing processing. There are various ways to freeze f...

AI Technical Summary

Problems solved by technology

Natural thawing is the most energy-efficient, but the thawing speed is slow and susceptible to microbial contamination

Water thawing has the characteristics of fast thawing speed and avoids weight loss, but there are problems such as microbial contamination of frozen products and soluble loss in thawing water

Microwave thawing is under the action of an alternating electric field, using the electrical properties of the substance itself to generate heat to thaw the frozen product. Its advantages are fast speed and high efficiency. However, the penetration and absorption of microwaves to water and ice are different, and it is easy to cause insufficient heating. Uniform phenomenon

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