Abstract: Room air conditioner box which is easily assembled/disassembled and reduces a noise. The box has a base plate, a cap member assembled to the base plate, a grill section for uniformly dispersing a chilled air passed around an evaporator, a first isolation wall section for separating an inner space into two sub-spaces so as to prevent a heat exchange therebetween and to attenuate the noise, a second isolation wall section for guiding the air drawn thereinto toward a condenser. The first isolation wall section includes a main body which receives a blower and guides the air passed around the evaporator toward the grill section, an evaporator cover assembled to the main body for guiding air drawn toward the main body, and a head section assembled to the main body for exposing an upper portion of the main body. The main body, the head section and the evaporator cover are manufactured by the injection molding, can be easily assembled/disassembled with/from each other and can attenuate the noise.

Abstract: Apparatus for cooling a condenser of a room air conditioner. The apparatus has a first fan coupled to a driving shaft of a driving motor, a second fan which has a circular band and is coupled to an edge portion of the driving shaft for accelerating air blown by the first fan, a skirt member for guiding the air accelerated by the second fan toward a center portion of the condenser, a mounting flange assembled to the condenser, and fixing members for fixing the skirt member to the mounting flange. The circular band surrounding the first fan converges toward the condenser and the skirt member is flared toward the condenser so that air passing through the second fan is accelerated toward the center portion of the condenser and experiences a minimum pressure drop. Air flowing along an outer wall of the skirt member cools a circumferential portion of the condenser. The apparatus uniformly cools the condenser, thereby improving an air conditioning efficiency of the room air conditioner.