Oven and control method thereof

Abstract

An oven and a control method thereof are provided. The oven includes a case including a cooking chamber in an inside thereof, a door hinge-coupled to the case and configured to open and close the cooking chamber, a cooling fan disposed in an upper portion of the inside of the case and configured to discharge air toward a front of the cooking chamber, and a heat blocking unit configured to form a wind shield which blocks high-temperature heat and water vapor discharged from an inside of the cooking chamber by changing a direction of the air discharged through the cooling fan to a lower side of the cooking chamber. In response to the door being closed, a portion of the heat blocking unit is pressed through an upper portion of the door and non-interferes the air discharged toward the front of the cooking chamber and in response to the door being opened, the portion of the heat blocking unit pressed by the upper portion of the door is released and interferes the air discharged toward the front of the cooking chamber to form the wind shield.

What is claimed is: 
     
         1 . An oven comprising:
 a case including a cooking chamber in an inside thereof;   a door hinge-coupled to the case and configured to open and close the cooking chamber;   a cooling fan disposed in an upper portion of the inside of the case and configured to discharge air toward a front of the cooking chamber; and   a heat blocking unit configured to form a wind shield which blocks high-temperature heat and water vapor discharged from an inside of the cooking chamber by changing a direction of the air discharged through the cooling fan to a lower side of the cooking chamber,   wherein in response to the door being closed, a portion of the heat blocking unit is pressed through an upper portion of the door and non-interferes the air discharged toward the front of the cooking chamber and in response to the door being opened, the portion of the heat blocking unit pressed by the upper portion of the door is released and interferes the air discharged toward the front of the cooking chamber to form the wind shield.   
     
     
         2 . The oven as claimed in  claim 1 , wherein the cooling fan rotates at a first speed in cooking and rotates at a second speed faster than the first speed in response to door being opened after the cooking. 
     
     
         3 . The oven as claimed in  claim 1 , wherein the heat blocking unit includes:
 a blocking plate hinge-coupled to a portion of the case close to an upper end of an opening of the cooking chamber; and   an elastic member configured to operate the blocking plate according to opening and closing of the door.   
     
     
         4 . The oven as claimed in  claim 3 , wherein the blocking plate is pressed through the door and set to a first position which non-interferes the air discharged toward the front of the cooking chamber in response to the door being closed and the blocking plate pressed through the door is released and set to a second position which interferes the air discharged toward the front of the cooking chamber in response to the door being opened. 
     
     
         5 . The oven as claimed in  claim 4 , wherein the blocking plate is obliquely disposed downward toward the inside of the cooking chamber in the second position. 
     
     
         6 . The oven as claimed in  claim 4 , wherein the second position is located at an angle rotated by 50 to 90 degrees from the first position. 
     
     
         7 . The oven as claimed in  claim 3 , further comprising at least one buffer member provided in the portion of the case to absorb a shock of the blocking plate which moves from the second position to the first position. 
     
     
         8 . The oven as claimed in  claim 1 , further comprising a door open/close detector configured to detect the opening and closing of the door,
 wherein the cooling fan rotates at a first speed in response to the closing of the door being detected through the door open/close detector and rotates at a second speed faster than the first speed in response to the opening of the door being detected through the door open/close detector.   
     
     
         9 . An oven comprising:
 a case including a cooking chamber in an inside thereof;   a door configured to open and close the cooking chamber;   a cooling fan configured to change speed of air discharged toward a front of the cooking chamber by changing rotation speed; and   a heat blocking unit configured to form a wind shield by changing a moving direction of the air through interference of the air discharged through the cooling fan according to opening of the door,   wherein in response to the door being closed, a portion of the heat blocking unit is pressed through an upper portion of the door and non-interferes the air discharged toward the front of the cooking chamber and in response to the door being opened, the portion of the heat blocking unit pressed by the upper portion of the door is released and interferes the air discharged toward the front of the cooking chamber to form the wind shield.   
     
     
         10 . The oven as claimed in  claim 9 , wherein the wind shield is obliquely formed directed to a lower portion of the inside of a cooking chamber from an upper portion of an opening of the cooking chamber. 
     
     
         11 . The oven as claimed in  claim 9 , wherein the portion of the blocking plate is set to a position which non-interferes the air discharged by the cooling fan in response to the door being closed,
 the oven further comprising at least one buffer member configured to absorb a shock generated by an operation according to a movement of the portion of the heat blocking unit to the position which non-interferes the air from a position which interferes the air.   
     
     
         12 . A method of controlling an oven, the method comprising:
 setting a blocking plate disposed in an upper portion of an opening of a cooking chamber to a first position by closing a door;   setting the blocking plate to a second position by opening the door after cooking is completed; and   forming a wind shield from the upper portion of the opening of the cooking chamber to a lower portion of the opening through collision of air continuously discharged toward the blocking plate with the blocking plate.   
     
     
         13 . The method as claimed in  claim 12 , wherein discharging speed of the air discharged toward the blocking plate set to the second position is larger than that of air discharged in response to the blocking plate being set to the first position. 
     
     
         14 . The method as claimed in  claim 12 , wherein the discharged air is provided through a cooling fan, and
 rotation speed of the cooling fan in the first position is larger than that of the cooling fan in the second position.   
     
     
         15 . The method as claimed in  claim 12 , wherein the discharged air is provided through a cooling fan,
 the method further comprising:   rotating the cooling fan at a first speed in response to closing of the door being detected; and   rotating the cooling fan at a second speed faster than the first speed in response to opening of the door being detected.