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METHOD FOR REDUCING NOISE OF AIR CONDITIONER, FAN UNIT AND APPARATUS, PRESSURE PULSATION REDUCER OF REFRIGERATION CYCLE UNIT, PRESSURE PULSATION REDUCER OF PUMP UNIT AND PRESSURE PULSATION REDUCING METHOD OF APPARATUS
METHOD FOR REDUCING NOISE OF AIR CONDITIONER, FAN UNIT AND APPARATUS, PRESSURE PULSATION REDUCER OF REFRIGERATION CYCLE UNIT, PRESSURE PULSATION REDUCER OF PUMP UNIT AND PRESSURE PULSATION REDUCING METHOD OF APPARATUS
Air conditioning equipment that ensures sufficient noise reduction in the low frequency range of a few hundred hertz or below. The air conditioning equipment is characterized by including a heat exchanger for exchanging heat between air and refrigerant of a refrigeration cycle, a fan that supplies air to the heat exchanger, an air duct in which the fan is installed and through which acoustic waves are propagated, and a plurality of small holes that blows a jet into the air duct and sucks a jet from the air duct by a pressure difference between the blow side and the suction side of the fan. IMAGE
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