Multifunctional high-precision constant-temperature and constant-humidity control freezing and refrigerating system

Abstract

The invention discloses a multifunctional high-precision constant-temperature and constant-humidity control freezing and refrigerating system. The system is formed by a refrigerating system, a refrigeration house body, an air supply and return system and a control system. By means of the refrigerating system, adjustment of the evaporating temperature ranging from -40 DEG C to 0 DEG C can be achieved, and the refrigerating system is composed of a scroll compressor, a gas-liquid separator, an ice temperature evaporator, a thermostatic expansion valve, an electromagnetic valve, a quick-freezing evaporator, an electronic expansion valve, an interstage cooler, a liquid storage device, a hot gas bypass valve, a dry filter, a liquid viewing lens, an air-cooled condenser and an oil separator; and the air supply and return system is arranged in the refrigeration house body, and comprises a quick-freezing air supply and return system, an ice temperature supply and return system and a hot gas circulation defrosting system. According to the system, corresponding food processing can be carried out according to different requirements, the refrigeration house using rate is greatly improved, and economic benefits are considerable; and intelligent volume variable adjustment of the refrigerating system can also be achieved, and therefore the constant-temperature, constant-humidity and constant-air-speed function meeting the different food processing requirements is achieved.

Description

technical field [0001] The invention belongs to the field of low-temperature refrigeration, refrigeration and food preservation, and more specifically, relates to quick-freezing, pre-cooling and refrigeration physical preservation technology of harvested fruits and vegetables and fresh meat. system. Background technique [0002] With the continuous growth of global food production such as fruits and vegetables, meat, eggs and fish, the climax of freezer construction is ushered in. Due to its strong seasonality and regionality, it is easy to rot and deteriorate, causing huge direct economic losses. As the basic link in the low-temperature cold chain system, the freezer has a certain role in improving the quality of food preservation and extending the shelf life. important meaning. The growth of meat, fruit and vegetable production and people's pursuit of diversification, freshness, nutrition and safety of agricultural products have prompted the circulation of agricultural p...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, solve the problem of low utilization rate of freezers and refrigerators due to seasonality and resource allocation, and provide a multifunctional high-precision constant temperature and humidity control freezer and refrigerator system. Under the refrigerating cycle of a single compressor unit, the system can realize functions such as low-temperature quick-freezing, refrigerating of frozen objects, pre-cooling of differential pressure and ice-temperature refrigerating, and can carry out corresponding food processing according to different needs, which greatly improves the utilization rate of the cold storage and is economical. The benefit is considerable; it can also realize the intelligent variable capacity adjustment of the refrigeration system to meet the functions of constant temperature, humidity and constant wind speed required by different food processing requirements

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