Uses the form storage alloy the large power amplifier cooling equipment

摘要

PURPOSE: To keep an intake-air temperature constant automatically, and to prevent abnormal operation due to the over-cooling of an amplifier by using a shape memory alloy and reflux a part of exhaust heat by the cooling of the amplifier back to the intake side. ;CONSTITUTION: An intake-air duct 5, to an intermediate section of which a reflux duct 6 is connected, and an exhaust duct 4 are passed in a large power amplifier 1 with a heat generating section 2 to be cooled, and a shape memory alloy 3 is positioned at the connecting section of the exhaust duct 4 and the reflux duct 6. An exhaust temperature is also normal at the time of a normal atmospheric temperature in the shape memory alloy 3, and the shape memory alloy 3 is brought to a closed state by the air pressure of cooling exhaust, and introduces exhaust heat to the exhaust duct 4. When an outside air temperature lowers and the exhaust temperature also lowers more than a certain fixed temperature, on the other hand, the shape memory alloy 3 opens by the stored shape. Accordingly, a part of exhaust is returned back to the intake side through the reflux duct 6, an intake air temperature is kept constant automatically, and abnormal operation due to the over-cooling of the amplifier can be prevented.;COPYRIGHT: (C)1993,JPO&Japio