Helicopter air inlet channel anti-icing and cabin heating comprehensive heat utilization system

Abstract

The invention provides a helicopter air inlet channel anti-icing and cabin heating comprehensive heat utilization system. The helicopter air inlet channel anti-icing and cabin heating comprehensive heat utilization system comprises a shut-off valve (1), an air entraining pipeline (2), an air suction fan (3), a ventilation pipeline (4), a heat exchanger (5), an anti-icing control valve (7), a heating control valve (8) and an ejector (9). The air entraining pipeline (2) entrains air from an air inlet (A) of a helicopter engine, sends the air to the heat exchanger (5), and respectively sends the air to the air inlet channel anti-icing cavity (C) and the ejector (9) through the heat exchanger (5); the ventilation pipeline (4) is connected with the atmosphere / air in the cabin, the air suction fan (3) is arranged on the ventilation pipeline (4), air is sucked into the ventilation pipeline (4) to flow to the heat exchanger (5), the air passing through the heat exchanger (5) is mixed with bleed air output by the ejector (9), and the mixed air is conveyed to the noise reduction mixing cavity (D) and then enters the helicopter cabin. Anti-icing of an air inlet channel of the engine and warming of the cabin are integrated, and the air entraining amount of the engine is reduced.

Description

technical field [0001] The invention belongs to the design field of a helicopter air intake anti-icing system and cabin heating, and relates to a helicopter air intake anti-icing and cabin heating comprehensive heat utilization system. Background technique [0002] At present, the anti-icing of the engine intake is mostly directly from the engine bleed air or electric heating anti-icing. The engine bleed air anti-icing temperature is high (usually greater than 350 ℃), and the high temperature resistance performance of the engine intake material is high. Costly. Common metal materials are not suitable for high-temperature bleed air of new engines. To use direct engine bleed air for anti-icing, it is necessary to add a cooling device to the engine bleed air so that the temperature of the bleed air entering the engine anti-icing chamber is lower than 200°C. Helicopter cockpit heating mostly uses engine bleed air, and at the same time ejects the outside atmosphere. After mixin...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a helicopter air inlet anti-icing and cockpit heating comprehensive heat utilization system, which solves the problem that the existing two sets of bleed air devices independently bleed air from the engine, and the amount of bleed air is relatively large

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