Refrigerator and method for controlling temperature thereof by controlling cool air discharge direction

A refrigerator comprising:

• a body having a freezer compartment and a refrigeration compartment;
• an evaporator for producing cool air and providing said cool air to said freezer and refrigeration compartments;
• a housing installed in a predetermined portion of said refrigeration compartment and having a guide path for guiding said cool air from said evaporator into said refrigerator and a cool air path for guiding said cool air downward from said guide path;
• a plurality of discharge holes vertically formed in said housing, for guiding said cool air which flows through said cool air path to be discharged into said refrigeration compartment;
• a cool air discharge adjustment blade rotatably installed in said housing, for controlling a direction in which said cool air is discharged from said discharge holes;
• and
• a driving motor for rotating said cool air discharge adjustment blade.

A refrigerator comprising:

• a body having a freezer compartment and a refrigeration compartment;
• an evaporator for producing cool air and providing said cool air to said freezer and refrigeration compartments;
• a housing installed in a predetermined portion of said refrigeration compartment and having a guide path for guiding said cool air from said evaporator to said refrigeration compartment;
• cool air paths formed at both sides of said housing to be communicated with said guide path and having a first path and a second path to guide said cool air from said guide path;
• a plurality of discharge holes vertically arranged between said first path and said second path, for guiding said cool air to be discharged into said refrigeration compartment through said cool air paths;
• a cool air discharge adjustment blade rotatably installed in the front surface, for distributing left and right or collecting said cool air from said discharge holes;
• and
• a driving motor for rotating said cool air discharge adjustment blade.

A refrigerator comprising:

• a housing installed on the rear wall of a refrigeration compartment;
• a cool air path installed in a predetermined position of said housing, for guiding cool air;
• a plurality of discharge holes communicated with said cool air path;
• a cool air discharge adjustment blade rotatably installed in each discharge hole;
• and
• a driving motor accommodated in a motor case, installed in said housing above said cool air discharge adjustment blade, for driving said cool air discharge adjustment blade.

A refrigerator comprising:

• a housing installed on the rear wall of a refrigeration compartment;
• a cool air path formed in a predetermined portion of said housing, for guiding cool air;
• a plurality of discharge holes communicated with said cool air path;
• at least one plate member rotatably placed in each discharge hole, for horizontally guiding said cool air discharged from said discharge holes;
• and
• a dispersion guiding blade vertically provided on said plate member, for dispersing said cool air.

A refrigerator having a cool air dispersion device installed on the rear wall of a refrigeration compartment, for keeping a uniform temperature distribution in said refrigeration compartment, the refrigerator comprising:

• a housing;
• a guide path installed at one side of said housing, for guiding cool air;
• a first path and a second path divided from said guide path, in parallel with each other, and provided in said housing;
• a plurality of discharge holes installed between said first path and said second path, respectively communicating with said first path and said second path;
• a cool air discharge adjustment blade rotatably placed in each discharge hole;
• a grill facing said cool air discharge adjustment blade, for protecting said cool air discharge adjustment blade in order to rotatingly discharge cool air into said refrigeration compartment from said first and second paths when said cool air discharge adjustment blade rotates.

A method for controlling refrigerator temperature by controlling a cool air discharge direction, comprising the steps of:

• determining whether a refrigerant circulating compressor is initially turned on, when power is applied;
• determining whether a door of a refrigerator is open, when said compressor is not initially on;
• firstly discharging cool air to be distributed by rotating a discharge damper with damper control means for controlling the amount of the cool air discharged into a refrigerator, when said compressor is initially on;
• secondly discharging cool air to be distributed by rotating said discharge damper with said damper control means for controlling the amount of the cool air discharged into said refrigerator, when said door is open;
• determining whether the average value of temperatures sensed by first temperature sensing means provided at a first position of said refrigerator is larger than the average value of temperatures sensed by second temperature sensing means provided at a second position of said refrigerator to face the first temperature sensing means, when said door is not open;
• discharging the cool air toward said first temperature sensing means under control of said cool air discharge direction controlling means, if the average value of temperatures sensed by said first temperature sensing means is larger than the average value of temperatures sensed by said second temperature sensing means;
• determining whether the average value of temperatures sensed by said first temperature sensing means is smaller than the average value of temperatures sensed by said second temperature sensing means, if the average value of temperatures sensed by said first temperature sensing means is not larger than the average value of temperatures sensed by said second temperature sensing means;
• discharging the cool air toward said second temperature sensing means under control of said cool air discharge direction controlling means, if the average value of temperatures sensed by said first temperature sensing means is smaller than the average value of temperatures sensed by said second temperature sensing means;
• and
• discharging the cool air toward the front under control of said cool air discharge direction controlling means, if the average value of temperatures sensed by said first temperature sensing means is equal to the average value of temperatures sensed by said second temperature sensing means.

A method for controlling refrigerator temperature by controlling a cool air discharge direction, comprising the steps of:

• determining whether a refrigerant circulating compressor is initially on, when power is applied;
• determining whether said compressor is on in a normal operation, when said compressor is not initially on;
• determining whether a damper for controlling the amount of cool air discharged into a refrigerator is open, when said compressor is on in the normal operation;
• determining whether a control reference temperature for discharge of cool air is larger than the absolute value of a difference in temperatures sensed by two temperature sensing means which are selected from at least two temperature sensing means arranged to face each other a predetermined distance apart, when said damper is open;
• determining whether a control reference temperature for non-discharge of cool air is larger than the absolute value of a difference in temperatures sensed by said two temperature sensing means, when said compressor is not on in the normal operation;
• determining whether the control reference temperature for non-discharge of cool air is larger than the absolute value of a difference in temperatures sensed by said two temperature sensing means, when said damper is open;
• firstly discharging the cool air in a predetermined direction, when said control reference temperature for discharge of cool air is larger than the absolute value of a difference in temperatures sensed by said two temperature sensing means;
• secondly discharging the cool air in the predetermined direction, when said control reference temperature for non-discharge of cool air is larger than the absolute value of a difference in temperatures sensed by said two temperature sensing means;
• firstly rotating a cool air discharge control blade, when said compressor is initially on;
• secondly rotating a cool air discharge control blade, when said control reference temperature for discharge of cool air is not larger than the absolute value of a difference in temperatures sensed by said two temperature sensing means;
• and
• thirdly rotating a cool air discharge control blade, when said control reference temperature for non-discharge of cool air is not larger than the absolute value of a difference in temperatures sensed by said two temperature sensing means.