Ventilating and cooling system and cooling method for airplane air-conditioner assembly cabin

Abstract

The invention provides a ventilating and cooling system and a cooling method for an airplane air-conditioner assembly cabin. The ventilating and cooling system includes a cold source air-inflow pipeline, an automatic turn-off valve, an air-inflow fan, an exhaust pipeline, a temperature sensor and a three-way valve, wherein an outlet of the cold source air-inflow pipeline is connected with an air inlet of the airplane air-conditioner assembly cabin; the automatic turn-off valve is arranged on the inlet region of the cold source air-inflow pipeline; the air-inflow fan is arranged on the cold source air-inflow pipeline and is located at the lower course of the automatic turn-off valve; an inlet of the exhaust pipeline is connected with an air outlet of the airplane air-conditioner assembly cabin; the temperature sensor is arranged in the exhaust pipeline and is used for testing the exhaust temperature in the exhaust pipeline; a first port of the three-way valve is connected with the outlet of the exhaust pipeline, a second port of the three-way valve is connected with the cold source air-inflow pipeline through a second air-inflow pipeline and a third port of the three-way valve communicates with the external environment. According to the ventilating and cooling system, the ventilating and cooling requirements of the air-conditioner assembly cabin can be met under the designed work conditions, the flight envelope is covered by every working condition and the ventilating and cooling of the airplane air-conditioner assembly cabin in the whole stage can be finished.

Description

technical field [0001] The invention relates to a ventilation and cooling system for an air-conditioning component cabin of a civil aircraft, in particular to the cooling of the air-conditioning component cabin of a civil aircraft. Background technique [0002] Electronic equipment cooling is one of the key areas of civil aviation, and the safety requirements are very high. The application of multi-power technology means more and more heat generation, and the cooling of equipment has also attracted more and more attention. [0003] A typical example is the air-conditioning component, which is the most important refrigeration unit of the aircraft and generates a lot of heat. The problem of heat absorption in the air-conditioning component compartment is an urgent problem for the aircraft. [0004] In this regard, the aircraft in active service mainly adopt the following methods to deal with it: first, regional airliners and narrow-body mainline aircraft do not undergo specia...

AI Technical Summary

Problems solved by technology

[0005] Most wide-body aircraft are long-range aircraft. If the ventilation and cooling of air-conditioning components cannot be properly handled, the performance of the components themselves will not be guaranteed, and there will be great hidden dangers in structural safety. System over temperature fault

The above-mentioned second and third processing methods must inhale ram air into the airborne system. Ram air is one of the important sources of aircraft fuel compensation loss. The increase in the use of aircraft ram air also reduces the economy of the aircraft.

The fourth source of cold source air is generally ram air or engine low-pressure bleed air, which also increases the overall fuel compensation loss of the aircraft

In addition, all three methods require an additional cooling device, which not only increases the weight, but also is not convenient for the installation and maintenance of the air conditioning components and their cabins

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