Abstract: An air conditioner is provided. A location of, an angle between, or a distance between, a heat exchanger and a blower may be varied based on whether or not the air conditioner is operating. A number of drivers for moving the heat exchanger and/or the blower may be reduced and reliability of the driver be enhanced. Size of the air conditioner may be reduced, and efficiency may be improved.

Abstract: Disclosed are an air conditioner and a method of controlling the air conditioner. The air conditioner includes at least one outdoor unit; at least one indoor unit connected to the outdoor unit to discharge hot or cool air to the inside of a room; and a communication device connected to the outdoor unit, wherein the communication device explores a terminal within a predetermined distance, receives a request from the terminal to communicate data with the terminal in a wireless communication scheme, and transmits operating state data of the outdoor unit and the indoor unit to the terminal.

Abstract: A method of diagnosing an air conditioner and mobile terminal equipment for performing the method are provided. The method of diagnosing the air conditioner using mobile terminal equipment includes beginning diagnosis of the air conditioner, displaying a diagnostic result of the air conditioner on a screen, and displaying a countermeasure for the diagnostic result.

Abstract: Provided is an indoor unit of an air conditioner. The structures of the indoor unit, such as the relationship between an inlet and an outlet, the shape of a rear guide, and the relationship between the outlet and a vane, are improved. Therefore, the airflow of the indoor unit is stable, and the noise level of the indoor unit is low.

Abstract: An indoor unit for an air conditioning apparatus is provided. The indoor unit includes a cross flow fan having a structure that can reduce noise and flow resistance of air passing through a heat exchanger in the indoor unit.

Abstract: An air conditioning system is provided. The air conditioning system allows coolant to selectively flow through a series of bypass pipes and valves connecting an outlet of a compressor and an outlet of an expansion member. The series of bypass pipes and valves allow a defrosting function to be performed without performing a reverse cycle.

Abstract: A silencer having improved noise reduction characteristics is disclosed. The silencer includes a first cylindrical connection pipe for guiding the flow of a fluid, a cylindrical expansion pipe communicating with the first connection pipe at one end thereof for guiding the flow of the fluid, the expansion pipe having a sectional area greater than that of the first connection pipe, and a second cylindrical connection pipe communicating with the other end of the expansion pipe for guiding the flow of the fluid. The expansion pipe has a length (L) decided depending upon a diameter (D) of the first connection pipe or the second connection pipe. According to the present invention, resonance caused by a pipe connected to the silencer is prevented, and therefore, the noise reduction efficiency of the silencer is improved.

Abstract: A method of controlling an air conditioner is provided. The method may include determining whether the air conditioner is operating in an abnormal state, and, when the air conditioner is operating in the abnormal state, operating a compressor in a safe mode having a different frequency pattern than when it is operated in a normal mode of the compressor. This allows the air conditioner to provide continuous heating/cooling, even when operating in an abnormal state.

Abstract: An air conditioner and a method of controlling the same are provided. The air conditioner may include an outdoor unit, one or more indoor units operably coupled to the outdoor unit, a temperature sensor, a valve driver, and a controller. By monitoring an actual temperature and comparing the actual temperature to a desired temperature, a flow path, of flow direction, and flow capacity flowing to the one or more indoor units to adjust a heating/cooling capacity thereof as appropriate.

Abstract: Provided is an air conditioner. According to the air conditioner, an installation structure of an indoor heat exchanger installed inside the air conditioner is improved, so that the air conditioner become slim and an installation space for additional devices such as a filter can be secured. According to the air conditioner, the indoor heat exchanger divides a passage of air introduced into a main unit into an upper passage and a lower passage, so that interference between the upper and lower passages can be minimized, and thus operation efficiency of the air conditioner can improve. Also, a space of a predetermined size is formed between the indoor heat exchanger and air intake holes to receive a predetermined device such as a filter and a negative ion generator that can give a separate function to the air conditioner.

Abstract: A fan includes a hub and a plurality of blades formed on the hub with a rake angle. In an axial direction of the hub, no part of a trailing edge of any of the blades is disposed past an air outlet end of the hub at more than a distance approximately equal to 25% of a diameter of the hub.

Abstract: An air conditioner includes a case provided with openings, a heat exchanger disposed in the case, one or more fans disposed in the case, and a variation unit that is movably disposed around the fans to vary air inlet and outlet directions.

Abstract: An air conditioner includes a fan and a rear guide which guides air to the fan. A recess is formed in a side surface of the rear guide which faces the fan.

Abstract: A cross-flow fan that variably maintains a distance between a blade and a fluid flow guide by varying a height of an outer edge and an air conditioner having the cross-flow fan are provided. Therefore, a noise and a peak value of a spectrum between the blade and the outer edge can be reduced.

Abstract: An air conditioner is disclosed which includes a case having one or more air intake portions, a heat exchanger inside the case, a fan in a vicinity of the heat exchanger, and an intake amount reducing member at one of the air intake portions that reduces an intake amount of introduced air.

Abstract: A fan of an air conditioner is provided. A discharge portion of a hub of the fan increases in outer diameter toward a discharge end of the hub such that air can diverge from the hub. The hub accommodates a portion of a motor such that the fan can vibrate less when the motor operates.

Abstract: An air conditioning system includes an indoor heat exchange unit which exchanges heat with indoor air, and an outdoor heat exchange unit which exchanges heat with outdoor air. The outdoor heat exchange unit performs a defrosting operation to remove frost from the outdoor heat exchange unit while the indoor heat exchange unit simultaneously performs a heating operation to heat the indoor air.

Abstract: A humidity adjusting apparatus includes at least one desiccant linearly reciprocated between a dehumidifying unit and a drying unit, and a motor for driving the desiccant to be moved, thereby improving dehumidifying and humidifying efficiency.

Abstract: A silencer having improved noise reduction characteristics is disclosed. The silencer includes a first cylindrical connection pipe for guiding the flow of a fluid, a cylindrical expansion pipe communicating with the first connection pipe at one end thereof for guiding the flow of the fluid, the expansion pipe having a sectional area greater than that of the first connection pipe, and a second cylindrical connection pipe communicating with the other end of the expansion pipe for guiding the flow of the fluid. The expansion pipe has a length (L) decided depending upon a diameter (D) of the first connection pipe or the second connection pipe. According to the present invention, resonance caused by a pipe connected to the silencer is prevented, and therefore, the noise reduction efficiency of the silencer is improved.

Abstract: There is provided an air conditioning system and method for operating an air conditioner according to a user's physical response to external conditions. The air conditioning system includes: an indoor environment sensing unit/a personal characteristic value reception unit for measuring an indoor environment and the user's physical status so as to obtain information used to operate an air conditioner; a control unit including at least a microprocessor, for finding out personal characteristic values which are used to evaluate the user's physical status on the basis of information inputted from the personal characteristic value reception unit; and a driving unit controlled by the control unit, for promptly enhancing the user's physical status.