Air conditioning unit draining valve for high-speed train

Abstract

The invention relates to an air conditioning unit draining valve for a high-speed train. The air conditioning unit draining valve comprises an upper draining pressure protective sleeve and a lower draining pressure protective sleeve and is characterized in that each of the upper draining pressure protective sleeve and the lower draining pressure protective sleeve is internally provided with a cavity body, the upper part and the lower part of each cavity body are respectively provided with a water inlet or a water outlet, and a floating ball is arranged in each cavity body; when positive pressure or negative pressure exists at a draining port of an air conditioning unit, the floating balls move upward or downward so as to block the water inlets or water outlets of the cavity bodies. The draining valve provided by the invention has the advantages of simple structure, convenience in installation and is suitable for air conditioning unit draining devices of other vehicles; and the draining valve can be used for solving the problems that because of the variation of air flow compositions during the running process of the train, internal environment exacerbation is caused by an air conditioner water discharge pipeline and the wasted work of an air conditioning system is increased.

Description

technical field [0001] The invention relates to a dehumidification and drainage device for an air-conditioning unit of a high-speed train, in particular to a drain valve in the drainage device. Background technique [0002] With the rapid development of science and technology, more and more high-speed trains are traveling to all parts of the motherland to meet the needs of people's travel. While the number of trains and lines increase, the time for trains to meet two cars or travel in tunnels will become longer and longer. When the trains meet or enter the tunnel, the air around the train is a compressible fluid, and the surface pressure of the train is positive and increases sharply. At this time, the untreated air flow outside the train carries condensed water and is drained by the air conditioning unit. The pipeline enters the train compartment, causing the pressure in the compartment to fluctuate greatly instantaneously, deteriorating the environment in the train, reduc...

AI Technical Summary

Problems solved by technology

When the drain outlet of the air-conditioning unit on the surface of the train is under negative pressure, the cold air around the evaporator at the inlet of the drain pipe will flow out of the train along with the drain pipe, which will increase the temperature of the air inside the train and increase the power consumption of the air-conditioning system

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