AIR-COOLED REFRIGERATOR AND DEFROSTING CONTROL METHOD THEREFOR

摘要

An air-cooled refrigerator (10), comprising a refrigerating chamber (100), a freezing chamber (200) and an evaporator chamber (300), wherein an evaporator (340) and a heating tube (350) are internally provided in the evaporator chamber (300), and the freezing chamber (200) and the evaporator chamber (300) are connected therebetween by means of a freezing air duct (600); a first air door (610) capable of being opened and closed is internally provided in the freezing air duct; the refrigerating chamber (100) comprises a first air inlet (110) and a first air outlet (120), and the evaporator chamber (300) comprises a second air inlet (310), a second air outlet (320) and a fan (330) arranged close to the second air outlet (320); the air-cooled refrigerator (10) further comprises a refrigerating air duct (400) which facilitates communication between the first air inlet (110) and the second air outlet (320), and a return air duct (500) which facilitates communication between the first air outlet (120) and the second air inlet (310); and a second air door (410) is internally provided in the refrigerating air duct (400). High-temperature return air in the refrigerating chamber (100) is returned to the evaporator chamber (300) by way of the return air duct (500) so as to preheat the heating tube (350), so that the heating tube (350) may be heated to a defrosting temperature in a shorter time.