Stair evaporative airplane ground air conditioning unit

Abstract

The invention discloses a stair evaporative airplane ground air conditioning unit. The stair evaporative airplane ground air conditioning unit comprises an air supply system, a refrigerating system and a bypass adjusting system; the air supply system comprises a filter, a first evaporator, a first water stopping plate, a second evaporator, a second water stopping plate, an air supply machine, a flow equalization board and a third evaporator; the a refrigerating system comprises a compressor, an oil separator, a condensate fan, an air cooling condenser, a mixing working medium separator, a plate-type evaporative condenser, a liquid storage device, a gas-liquid separator, an evaporating pressure controller, a thermostatic expansion valve and an electromagnetic valve; the bypass adjusting system comprises a bypass electric adjusting valve and a return air temperature sensor; and the first evaporator, the second evaporator and the third evaporator of the air supply system are connected with the refrigerating system through a refrigerating pipe. The stair evaporative airplane ground air conditioning unit solves the problem of low efficiency in traditional design, the system is simple, the refrigeration performance is high, the system reliability is high, and the application scope is wide.

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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