Abstract: The present invention provides an indoor unit of a package air conditioner sustaining a high air cooling efficiency and improved exterior appearance by constituting the front lower panel of indoor unit with a plate and a frame and making the imbibed indoor air dispersed evenly over the entire heat exchanger through a first air inlet port provided between the plate and the frame and second air inlet ports on the side of the frame. The front lower panel 11 of the indoor unit 10 according to the present invention is consisted of a frame 11a installed on the front lower portion of the main body and of a plate 11b placed with an inclination of the predetermined angle for the frame 11a and has a first air inlet port 12 and second air inlet ports 12′ through which the indoor air is flown, wherein the first air inlet port 12 is formed between the plate 11b and the frame 11a and the second air inlet ports 12′ is formed on the side portion of the frame 11a.

Abstract: An actuating device for actuating a shutter is provided with a vertical guiding plate formed on both sides of the shutter to extend in a lengthwise direction thereof, a united guiding groove divided into a triangular guiding groove having a widened width for guiding the vertical guiding plate and an inclined guiding groove having a narrow width and formed in an inclined form at a predetermined angle, a vertical movement member having a movement member protuberance provided with a hinge at which one end of an actuating rod is connected, the other end of the actuating rod being connected to a shutter protuberance formed on a rear surface of the shutter, and a slip prevention protuberance having a tooth shaped configuration protruding from a front surface thereof, a roller resiliently contacted on the slip prevention protuberance of the vertical movement member; and a driving motor whose rotating shaft is inserted into the roller for actuating the vertical movement member upwardly and downwardly by being supplie

Abstract: The present invention provides an indoor unit of a package air conditioner sustaining a high air cooling efficiency and improved exterior appearance by constituting the front lower panel of indoor unit with a plate and a frame and making the imbibed indoor air dispersed evenly over the entire heat exchanger through a first air inlet port provided between the plate and the frame and second air inlet ports on the side of the frame. The front lower panel 11 of the indoor unit 10 according to the present invention is consisted of a frame 11a installed on the front lower portion of the main body and of a plate 11b placed with an inclination of the predetermined angle for the frame 11a and has a first air inlet port 12 and second air inlet ports 12′ through which the indoor air is flown, wherein the first air inlet port 12 is formed between the plate 11b and the frame 11a and the second air inlet ports 12′ is formed on the side portion of the frame 11a.

Abstract: A reinforced structure of the front lower panel for a package air conditioner may comprise a front lower panel, which is mounted on the front lower portion of the indoor unit of the air conditioner having a blower device for air circulation, evaporator coils for heat exchange, permitting the air inside the interior space to flow into the indoor unit for passing across the evaporator coils through the air inlets 12 and 12′, and includes the reinforcement means formed on the inner corner portion between a front frame 11a and a side portion of the frame 11a having air guides 20 of the front lower panel 11, to strengthen the structural rigidity of the frames.

Abstract: An actuating device for actuating a shutter is provided with a vertical guiding plate formed on both sides of the shutter to extend in a lengthwise direction thereof, a united guiding groove divided into a triangular guiding groove having a widened width for guiding the vertical guiding plate and an inclined guiding groove having a narrow width and formed in an inclined form at a predetermined angle, a vertical movement member having a movement member protuberance provided with a hinge at which one end of an actuating rod is connected, the other end of the actuating rod being connected to a shutter protuberance formed on a rear surface of the shutter, and a slip prevention protuberance having a tooth shaped configuration protruding from a front surface thereof, a roller resiliently contacted on the slip prevention protuberance of the vertical movement member; and a driving motor whose rotating shaft is inserted into the roller for actuating the vertical movement member upwardly and downwardly by being supplie

Abstract: Device and method for detecting anomaly of an air conditioner, the method including the steps of (1) detecting an acoustic emission signal from a compressor in the air conditioner during operation of the air conditioner, (2) detecting parameters of particular components from the detected acoustic emission signal, and (3) comparing the detected parameters to respective references, to determine anomaly of the air conditioner on the whole, whereby permitting the most reliable detection of anomaly of the air conditioner.