Air circulation system with controllable ejection heat dissipation

Abstract

The invention provides an air circulation system with controllable ejection heat dissipation and belongs to the field of helicopter environment control systems. High-temperature high-pressure gas passing through an absolute pressure regulator (1) further stretches to a channel air outlet where a cooling radiator (2) is located through a first pipeline, an ejector (10) is arranged at the tail end of the first pipeline, and the direction of a nozzle of the ejector (10) is consistent with the air direction of the air outlet. Outboard ambient air is firstly ejected through the ejector to the cooling radiator, the air temperature of an inlet of a turbine cooler is reduced, it can be guaranteed that the system can stably work when a helicopter hovers or no ram air exists in ground work, and the service life of the turbine cooler can be prolonged. As a fan is started and sucks the outboard air to be cooling radiator, the ejector is stopped to reduce the air entraining amount of an engine, and the power consumption of the engine is reduced.

Description

technical field [0001] The invention belongs to the design field of helicopter environmental control systems, and in particular relates to an air circulation system with controllable ejection and heat dissipation. Background technique [0002] The simple air circulation system of fixed-wing aircraft is mainly composed of absolute pressure regulator 1, radiator 2, turbine 3, fan 4, water separator 5, sprayer 6, cold side air inlet channel 7, cold side air outlet channel 8, etc. , the basic principle is: the high-temperature and high-pressure gas sent by the engine is regulated by the absolute pressure regulator 1, then cools down in the radiator 2, flows into the turbo cooler 3, and the turbo cooler works on the expansion of the fan 4. The air in the middle expands to the required cabin air pressure, and after being separated by the water separator 5, the dry air enters the cabin, and the liquid water is sprayed to the outer surface of the radiator by the sprayer 6 to enhance...

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Problems solved by technology

[0004] Helicopters are different from fixed-wing aircraft in that they can hover in the air. If the air circulation system mentioned in the above-mentioned patent is directly applied to a helicopter, it will lose its function due to the inability to dissipate heat when hovering or driving on the ground, and the turbine will be damaged by high-temperature heat. cooler

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