Multi-cabin double-system environment control system of helicopter

Abstract

The invention discloses a multi-cabin double-system environment control system for a helicopter, which can realize conversion between refrigeration of an electronic equipment cabin of the helicopter and refrigeration and heating of a cabin, and comprises a cabin pressurization system without engine air entraining, so that the influence of the environment control system on a power source is reduced, and the maneuvering characteristics of the helicopter are improved. By the adoption of the compressor middle air supplementing technology, after primary throttling, part of refrigerant flows into the electronic equipment cabin for heat absorption and cooling, and then enters the compressor in an air supplementing mode; the remaining refrigerant continues to be throttled to lower pressure, flowsinto a cabin side evaporator (during refrigeration) or an environment side evaporator (during heating) for heat absorption, and then flows into the air suction end of the compressor; the exhaust temperature of the compressor can be reduced, normal work of a refrigerating system in a high-temperature environment is achieved, and it is guaranteed that an environment control system can effectively operate in an all-weather and wide-working-condition environment; and lubricating oil heat and heat dissipating capacity of electronic equipment are recycled, so that real-time comprehensive managementof the whole machine energy is realized, and the heating efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of aviation systems, and relates to a helicopter air-conditioning system, in particular to a helicopter multi-cabin dual-system environment control system. Background technique [0002] In recent years, helicopters have become more and more widely used in military and civilian fields such as rescue, law enforcement, agriculture, military, and transportation. This is because it is an aircraft that is powered by a turboshaft engine in the form of a rotating output shaft and directly drives the rotor through a mechanical transmission system to generate lift and propulsion. It can complete many flight actions that conventional fixed-wing aircraft cannot complete, such as vertical take-off and landing, hovering in the air, in-situ rotation, and multi-directional flight. In addition, when the engine is stopped, it can also use the rotor autorotation characteristics to achieve a safe landing, so it is very safe to...

AI Technical Summary

Problems solved by technology

In addition, most of the current helicopters use engine bleed air to achieve heating, which will obviously increase the compensatory loss of the system

Due to the low flying altitude, the cockpit is not airtight, and the current helicopter does not need cockpit pressurization. The solution to the cockpit pressurization in fixed-wing aircraft is mainly the air circulation system, but this system needs to extract a large amount of engine bleed air and consume a large amount of engine power.

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