Intelligent three-source refrigeration control system

Abstract

The invention provides an intelligent three-source refrigeration control system comprising a compressor, a condenser and an evaporator which form a circulation loop. The intelligent three-source refrigeration control system further comprises a collection unit, an intelligent controller and an execution unit. The collection unit and the intelligent controller are sequentially connected through an input bus. The intelligent controller and the execution unit are sequentially connected through the input bus. The collection unit collects the data of air suction temperature and air suction pressure on a compressor air suction pipe, air discharge temperature and air discharge pressure on a compressor air discharge pipe, temperature on a liquid supply pipe of the output end of the condenser, and temperature of the evaporator. The collection unit transmits the collected data to the intelligent controller, and the intelligent controller conducts calculation and controls the execution unit to execute a command. The execution unit achieves three-source servo type throttling pressure-reducing intelligent control, and motion feedback is formed. The intelligent controller achieves accurate calculation and accurately controls supply of energy needed by the evaporator, the effect that the evaporator does not frost is ensured effectively, and service life of the system is prolonged effectively.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to an intelligent three-source refrigeration control system. Background technique [0002] The refrigeration principle of the refrigerator is to compress the lower vapor into higher pressure vapor by the compressor, so that the volume of the vapor is reduced and the pressure is increased. The compressor sucks the lower-pressure working medium vapor from the evaporator, raises its pressure, and then sends it to the condenser, where it is condensed into a higher-pressure liquid, which becomes a higher-pressure liquid after being throttled by the throttle valve. After the low-pressure liquid is sent to the evaporator, it absorbs heat and evaporates in the evaporator to become a steam with a lower pressure, and then sends it to the inlet of the compressor to complete the refrigeration cycle. However, frost will accumulate on the surface of the evaporator after cooling for a perio...

AI Technical Summary

Problems solved by technology

However, frost will accumulate on the surface of the evaporator after cooling for a period of time. Excessive frost accumulation will lead to poor exchange, poor cooling performance, and unstable system operation. In severe cases, it will affect the environment without cooling down and cause a series of failures.

[0003] Existing methods for clearing frost accumulation include electric heating defrosting, thermal fluorinating defrosting, and water flushing defrosting for evaporator defrosting treatment. The speed and effect seriously prolong the running time, increase the power consumption, and reduce the service life of the equipment

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