Bidirectional rotational flow mixing device for heat exchanger of air source system

Abstract

The invention discloses a bidirectional rotational flow mixing device for a heat exchanger of an aircraft air source system, the mixing device comprises an outer sleeve and an inner sleeve, the inner sleeve is located in the outer sleeve, and the two sleeves are spaced from each other; the mixing device further comprises a plurality of outer ring stator blades, and the outer ring stator blades are fixedly connected with the inner wall face of the outer sleeve and the outer wall face of the inner sleeve at intervals. The plurality of inner ring stator blades are fixedly connected with the inner wall surface of the inner sleeve in a mutually separated manner; the outer ring stator blades and the inner ring stator blades are arranged at different angles relative to the longitudinal axis of the inner sleeve. When the outer-ring blades and the inner-ring blades incline in opposite directions relative to the longitudinal direction, the two-way rotational flow mixing device can enable air flows passing through the inner-ring blades and the outer-ring blades to rotate in opposite directions, so that the two air flows are wound and mixed with each other, and the purpose of quickly and efficiently realizing temperature field homogenization is achieved.

Description

technical field [0001] The invention relates to an aircraft environment control system, in particular to a two-way swirling flow mixing device used for a precooler of an air source system in the environment control system. Background technique [0002] The environmental control system of modern aircraft is mainly used to control the internal environment of the aircraft. It can provide ventilation for systems such as avionics, fuel and hydraulic systems, and also provide anti-icing and anti-fog functions for the aircraft. [0003] The civil aircraft environmental control system has a pre-cooling heat exchanger, which is used to cool the high-temperature bleed air of the engine, so as to meet the requirements of the downstream air conditioning, anti-icing, fuel tank inerting and other systems for the bleed air temperature. Usually, a temperature sensor is arranged downstream of the outlet of the hot side of the precooler for closed-loop control of the cold side flow of the pre...

AI Technical Summary

Problems solved by technology

However, it is actually found that the airflow rotates in a single direction, which will lead to greater uncertainty in the temperature on both sides of the air conditioner and anti-icing

And the distance from the outlet of the precooler to the branch of the downstream pipeline is short, so the air mixing device must have higher heat exchange efficiency to ensure the same temperature on both sides of the air conditioner and anti-icing

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