Cooling control method for a reversible direct cooling system

A direct-cooling system, a control method of the refrigerator and cooling reversible, the reversible direct cooling system comprising compressor, condenser, filter drier, expansion means, an evaporator, and a four-way valve back to the trachea. The vaporizer comprises, in the refrigerating evaporator and freezing evaporator arranged in series, the four-way valve comprising a first port connected to the throttle means, connected to the second port of the refrigeration evaporator, an evaporator connected to the freezing a third port and a fourth port is connected to the return pipe. Using a reversible direct cooling system, and cooling control method provided by the invention, can be solved refrigerator evaporator area matching at different ambient temperatures, has the effect of reducing energy consumption, as compared to the prior art solutions while reducing the area of ​​the refrigerating evaporator, reduce manufacturing costs.