Refrigeration system and control method thereof

Abstract

The invention provides a refrigeration system and a control method thereof. The refrigeration system comprises a compressor, a condenser, a freezing evaporator, a cold storage evaporator, a first pipeline and a second pipeline. One end of the first pipeline communicates with the condenser, and the other end of the first pipeline communicates with a low-pressure air suction port. One end of the second pipeline communicates with the condenser, and the other end of the second pipeline communicates with a medium-pressure air suction port. The part, located on the upstream part of the freezing evaporator, of the first pipeline is further provided with a first throttle device, and the part, located on the upstream part of the cold storage evaporator, of the second pipeline is further provided with a second throttle device. According to the refrigeration system and the control method thereof, refrigeration cold storage and freezing of two different evaporation temperatures can be achieved inthe same refrigeration system at the same time. The compressor air suction overheat degree after evaporation is finished is greatly reduced, the exhaust temperature is reduced, compressor power consumption is reduced, meanwhile, heat exchange is conducted in a latent heat state, the refrigerating cooling capacity of the refrigeration system is greatly improved, and the cooling capacity for cold storage can be effectively achieved.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a refrigeration system and a control method thereof. Background technique [0002] The existing conventional refrigeration unit has a single function, has its specific operating temperature range, and also has specific operating conditions during use. Different models are used to meet different working temperature temperatures. When it comes to simultaneous refrigeration and refrigeration needs, it is necessary to Equipped with specific refrigerating and freezing units. When the conventional refrigeration unit is used in refrigeration and refrigeration, the refrigerant in the system will be throttled to a very low pressure, and it will first pass through the heat exchanger for refrigeration to exchange heat and become a relatively superheated gas. The refrigerant then flows through the heat exchanger for refrigeration to exchange heat, and the refrigerant coming out of the...

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the same set of refrigeration systems in the prior art cannot realize refrigeration and freezing at the same time and ensure low power consumption, thereby providing a refrigeration system and its control method

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