Air conditioning equipment, fan equipment, method of...

Refrigeration – Disparate apparatus utilized as heat source or absorber – With vapor compression system

Reexamination Certificate

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C062S324100

Reexamination Certificate

active

07856837

ABSTRACT:
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.

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Abstract of JP11-107959 A to Fijiwara et al.
English translation to JP 11-107959 A to Fujiwara et al.
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