Control method for refrigerator, and computer storage medium

A control method for a refrigerator, wherein the refrigerator comprises a refrigerator body and a door body;

• a front side of the refrigerator body is open to define a first chamber;
• the door body comprises a main door configured to open or close the first chamber and defining a second chamber, and a secondary door configured to open or close the second chamber;
• a rear wall of the main door is provided with an air supply port configured to supply cold air in the first chamber into the second chamber;
• the rear wall is in a hollow shape, in which a condensation removal air duct in communication with the first chamber is defined;
• a plurality of condensation removal holes in communication with the second chamber and the condensation removal air duct are formed backwards on a front surface of the rear wall;
• and the control method comprises:
• acquiring a relative air humidity q of the second chamber;
• acquiring a relative air humidity threshold Po at which air in the second chamber begins to condense on the front surface of the rear wall;
• comparing the relative air humidity φ with the relative air humidity threshold φ0;
• if φ≤φ0, closing the condensation removal air duct, and opening the air supply port to run a cooling mode in which the air in the first chamber enters the second chamber via the air supply port;
• and
• if φ>φ0, closing the air supply port, and opening the condensation removal air duct to run a condensation removal mode in which the air in the first chamber enters the condensation removal air duct and flows to the front surface of the rear wall via the condensation removal holes to remove condensation on the surface.