Cascade evaporative aircraft ground air conditioning unit

Abstract

The invention discloses a cascaded evaporative aircraft ground air conditioning unit, which includes: an air supply system, a refrigeration system and a bypass adjustment system; the air supply system includes a filter, a first evaporator, a first water baffle, The second evaporator, the second water baffle, the blower, the equalizer plate, and the third evaporator; the refrigeration system includes a compressor, an oil separator, a condensing fan, an air-cooled condenser, a mixed working medium separator, and a plate type evaporative condenser, liquid receiver, gas-liquid separator, evaporative pressure controller, thermal expansion valve and solenoid valve; the bypass regulating system includes a bypass electric regulating valve and a return air temperature sensor; the first air supply system The evaporator, the second evaporator and the third evaporator are connected to the refrigeration system through refrigeration pipelines; the invention solves the problem of low energy efficiency in the traditional design, and has the advantages of simple system, high refrigeration performance, strong system reliability and wide application range.

Description

technical field [0001] The invention belongs to the field of refrigeration and air conditioning, in particular to a cascade evaporation type aircraft ground air conditioning unit. Background technique [0002] The aircraft used in the aviation system, whether it is a civil aviation aircraft or a military fighter, needs a large amount of cold air with a low outlet temperature to be filled in when it lands and docks, to cool the personnel and airborne equipment in the cabin, so as to maintain a suitable environment in the cabin temperature. Under normal circumstances, to quickly maintain the ambient temperature of the cabin, the outlet temperature of the aircraft ground air conditioning unit is required to be as low as -3°C. Air conditioning units cool 45°C air to -3°C, which is generally difficult to achieve with a single refrigeration system. [0003] The traditional approach is, one is to use a multi-compressor refrigeration system to achieve multi-stage evaporation tempe...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is to provide a cascaded evaporative aircraft ground air-conditioning unit, which solves the problems of the existing air-conditioning units in which the operating system is too complicated, the reliability is low, and the energy efficiency is not high

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