Ventilation cooling device for air-entraining valve

Abstract

The invention relates to a ventilation cooling device for an air-entraining valve. The ventilation cooling device comprises a nozzle, a mixing chamber and a direction adjusting mechanism. The nozzle is in communication with a cold air source and is arranged at an inlet of the ventilation cooling device. The nozzle is provided with an internal passage with the tapered cross section. The mixing chamber is provided with a mixing cavity inside the mixing chamber and a plurality of vent holes in the circumferential wall of the mixing chamber. The vent holes are in communication with the inside andoutside environments of the mixing chamber. An outlet of the nozzle is located in the mixing cavity. The direction adjusting mechanism is connected to an outlet of the mixing chamber and is configuredto be capable of adjusting the ejection direction of the air. According to the ventilation cooling device, the external low-temperature environment temperature can be introduced into the system and used as one cooling source of the air-entraining valve; and meanwhile, the installation flexibility of the ventilation cooling device can be improved through the direction adjusting mechanism.

Description

technical field [0001] The invention relates to the field of cooling systems of aircraft, in particular to a ventilation cooling device for bleed air valves. Background technique [0002] In civil aircraft systems, the air source system of civil aircraft usually draws high-temperature and high-pressure gas from the engine for downstream gas systems such as air conditioning systems and anti-icing systems. Engine bleed air is controlled by bleed air valves, which usually include high pressure valves, medium pressure valves, and pressure regulation shut-off valves. [0003] There are multiple high-temperature heat sources in the engine nacelle, so a complex and high-temperature thermal environment is formed inside. The bleed air valve installed in the nacelle is in an environment surrounded by components with a temperature as high as 500°C or higher, such as the core casing, high-temperature bleed air pipeline, and anti-icing pipeline. However, the bleed air valve is limited ...

AI Technical Summary

Problems solved by technology

However, as a ventilation pipeline composed of rigid materials, in order to ensure that the outlet of the ventilation pipeline leads to the bleed valve when the position of the bleed valve is fixed, the components of the ventilation pipeline need to be adjusted many times, which It will increase the manufacturing cost and affect the layout of other parts

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