Refrigerator

1. A refrigerator comprising:

a cabinet forming a storage compartment;

a rear panel forming a rear wall of the storage compartment and having at least one cooling air outlet hole which discharges cooling air toward the storage compartment;

a fan housing coupled to the rear panel and in which a fan configured to generate a circulation of the cooling air is installed;

an outlet port which is formed at the fan housing and discharges the cooling air supplied by driving of the fan; and

a drawer movable in a prescribed direction from inside of the storage compartment, wherein, the drawer includes:

a drawer body forming a storage space; and

a cooling air duct provided above the drawer body, the cooling air duct including:

a first cover;

a second cover which is coupled to a lower side of the first cover and shields at least a part of an open upper portion of the drawer body; and

a coupler extending from the first cover towards the second cover to divide an inner space between the first cover and the second cover into a first space and a second space;

wherein the first space comprises a cooling air path in communication with the outlet port; and the second space comprises an air layer, and

wherein the second cover includes:

a guide surface which forms a bottom of the first space and guides a flow of the cooling air which was discharged from the outlet port along the cooling air path;

a communication port which introduces the cooling air flowing through the cooling air path to the drawer body, the communication port being located between the guide surface and the coupler;

a step that is stepped from the guide surface toward the communication port; and

at least one rib provided at a side of the outlet port, the at least one rib protruding upward from the step.

2. The refrigerator of claim 1 , wherein the at least one rib comprises a plurality of ribs configured to interfere with the flow of the cooling air, and

wherein the plurality of ribs changes a flow direction of the cooling air from a first direction to a second direction, different from the first direction.

3. The refrigerator of claim 2 , wherein the plurality of ribs is positioned in front of the outlet port, and the guide surface is positioned at a lateral side of the plurality of ribs.

4. The refrigerator of claim 1 , wherein the fan housing includes:

a housing body which accommodates the fan;

a panel coupling flange provided at a rear portion of the housing body and coupled to the rear panel; and

a blocking wall extending from the panel coupling flange rearward and provided behind the rear panel to prevent defrosted water from being introduced into the housing body.

5. The refrigerator of claim 1 , wherein the drawer body includes a bottom surface, first and second side surfaces, and a rear surface, wherein the rear surface of the drawer body includes a first seat in which the fan housing is installed.

6. The refrigerator of claim 5 , further including an inlet port which is provided at the rear surface of the drawer body and guides the cooling air in the storage space to be discharged outside the drawer body.

7. The refrigerator of claim 6 , wherein the first seat is formed at an upper portion of the rear surface of the drawer body, and the inlet port is formed at a lower portion of the rear surface of the drawer body.

8. The refrigerator of claim 5 , wherein the rear surface of the drawer body includes a second seat in which a temperature sensor is installed.

9. The refrigerator of claim 8 , wherein the second seat is laterally recessed from the first seat.

10. The refrigerator of claim 4 , wherein the cooling air duct includes a housing coupler surrounding an edge portion of the housing body.

11. The refrigerator of claim 1 , wherein the first cover includes a thermal insulation member provided at one side of the cooling air path to prevent freezing of the cooling air duct.

12. The refrigerator of claim 1 , farther comprising a first seal protruding toward a lower portion of the cooling air duct and arranged at a position spaced apart from a side portion of the drawer body toward an inside thereof.

13. The refrigerator of claim 1 , further comprising:

a groove formed along an edge of the second cover; and

a second seal installed at the groove of the second cover to be pressed against a top surface of the drawer body.

14. The refrigerator of claim 1 , further comprising a divider which divides an inner space of the drawer body and is movably provided within the drawer body.

15. The refrigerator of claim 1 wherein the cooling air duct moves upward when the drawer body is withdrawn, and moves downward when the drawer body is inserted into the storage compartment.