Abstract: An air conditioner includes a blower unit to blow air at a predetermined amount, a cooling unit arranged downstream of the blower unit in an air flowing direction, a compressor which is operated at a variable operating frequency so that a revolving speed thereof is adjustable, a condenser, and a cooling coil connected in this order by pipes to circulate a heating medium to cool blown air with a heating unit arranged on a downstream side of the cooling unit in the air flowing direction in which the blown air is heated by a heater, and a control unit controls the operating frequency of the compressor and includes a compressor control part which adjusts the revolving speed of the compressor such that the operating frequency of the compressor is decreased by a predetermined frequency when an output of the heating unit exceeds a first threshold value.

Abstract: A downsized air conditioning system including a cooling device that cools air introduced into the air conditioning system to condense moisture contained in the air; a heating device that heats the air; and a humidification device that humidifies the air; wherein: in a plan view of the air conditioning system, at least a part of the humidification device is overlapped with at least a part of the cooling device; the heating device includes first and second heating devices, and in a plan view, at least a part of the first heating device and at least a part of the second heating device are respectively overlapped with at least a part of the cooling device; and when seen along an introduction direction of the air into the air conditioning system, at least a part of the humidification device is overlapped with at least a part of the heating device.

Abstract: An air conditioner includes: a cooling unit having a compressor operated at a variable operating frequency to adjust a revolving speed thereof, a condenser, an expansion valve and a cooling coil; and a heating unit for causing the heating medium flowing from the compressor toward the condenser to diverge, and to return to flow into the condenser, through a heating coil and a thermal dose adjusting valve disposed on the downstream side thereof; so as to control a temperature of air by the cooling and heating coils. When an opening manipulated variable of the thermal dose adjusting valve exceeds a first threshold value over a period of time, an operating frequency of the compressor is decreased, and when the opening manipulated variable of the thermal dose adjusting valve falls below a smaller, second threshold value, over the said period of time, the operating frequency of the compressor is increased.

Abstract: An air conditioner comprising a blower unit to blow air at a predetermined amount, a cooling unit arranged downstream of the blower unit in an air flowing direction, a compressor which is operated at a variable operating frequency so that a revolving speed thereof is adjustable, a condenser, and a cooling coil connected in this order by pipes to circulate a heating medium to cool blown air. A heating unit is arranged on a downstream side of said cooling unit in the air flowing direction in which the blown air is heated by a heater. A control unit controls the operating frequency of the compressor and includes a compressor control part which adjusts the revolving speed of the compressor in such a way that the operating frequency of the compressor is decreased by a predetermined frequency when an output of the heating unit exceeds a first threshold value.

Abstract: A downsized air conditioning system including a cooling device that cools air introduced into the air conditioning system to condense moisture contained in the air; a heating device that heats the air; and a humidification device that humidifies the air; wherein: in a plan view of the air conditioning system, at least a part of the humidification device is overlapped with at least a part of the cooling device; the heating device includes first and second heating devices, and in a plan view, at least a part of the first heating device and at least a part of the second heating device are respectively overlapped with at least a part of the cooling device; and when seen along an introduction direction of the air into the air conditioning system, at least a part of the humidification device is overlapped with at least a part of the heating device.

Abstract: An air conditioner includes: a cooling unit having a compressor operated at a variable operating frequency to adjust a revolving speed thereof, a condenser, an expansion valve and a cooling coil; and a heating unit for causing the heating medium flowing from the compressor toward the condenser to diverge, and to return to flow into the condenser, through a heating coil and a thermal dose adjusting valve disposed on the downstream side thereof; so as to control a temperature of air by the cooling and heating coils. When an opening manipulated variable of the thermal dose adjusting valve exceeds a first threshold value over a period of time, an operating frequency of the compressor is decreased, and when the opening manipulated variable of the thermal dose adjusting valve falls below a smaller, second threshold value, over the said period of time, the operating frequency of the compressor is increased.