Cooling air circulating system for use in a refrigerator

A cooling air circulating system for use in a refrigerator having a freezer chamber equipped with an evaporator and a refrigerator chamber, comprising:

• a blower installed at a substantially upper central portion of back of the freezer chamber, for supplying a cooling air from the evaporator into the freezer chamber,
• a first cooling air supplying duct for guiding a cooling air from the evaporator into the refrigerator chamber, the cooling air supplying duct downwardly, linearly extending from the blower to a substantially upper central portion of back of the refrigerator chamber and then being horizontally, linearly branched into a left and a right sides of the refrigerator chamber,
• a cooling air supplying device provided at the branched portion of the first cooling air supplying duct, for supplying the cooling air from the evaporator into the refrigerator chamber through the first cooling air supplying duct;
• and
• a second cooling air supplying duct for allowing the cooling air supplying device to supply the cooling air from the evaporator into the refrigerator chamber,
• wherein the cooling air supplying device includes a driving source, a shaft rotated by the driving source, and a left and a right fans respectively, installed at both ends of the shaft.

A cooling air circulating system for use in a refrigerator having a freezer chamber equipped with an evaporator and a refrigerator chamber, comprising:

• a blower installed at a substantially upper central portion of back of the freezer chamber, for supplying a cooling air from the evaporator into the freezer chamber;
• a first cooling air supplying duct for guiding a cooling air from the evaporator into the refrigerator chamber, the cooling air supplying duct downwardly, linearly extending from the blower to a substantially upper central portion of back of the refrigerator chamber and then being horizontally, linearly branched into a left and a right sides of the refrigerator chamber;
• a cooling air supplying device provided at the branched portion of the first cooling air supplying duct, for supplying the cooling air from the evaporator into the refrigerator chamber through the first cooling air supplying duct;
• and
• a second cooling air supplying duct for allowing the cooling air supplying device to supply the cooling air from the evaporator into the refrigerator chamber;
• wherein the cooling air supplying device is a sirocco fan.