Self-acting pressure drain valve

Abstract

A self-acting pressure drain valve includes at least one inlet configured to receive a fluid. A drainage passage delivers the fluid to at least one outlet where the fluid is expelled. The self-actingpressure drain valve further includes a flexible diaphragm configured to operate at an open position and a closed position based on the pressure. The flexible diaphragm is normally biased at the openposition such that the fluid is delivered from the at least one inlet to the at least one outlet via the drainage passage. The pressure, however, initiates the closed position such that air is prevented from flowing through the drainage passage.

Description

technical field [0001] The present invention relates generally to fluid discharge valves and, more particularly, to an automatic pressure activated discharge valve. Background technique [0002] Vehicles such as, for example, commercial airline vehicles include environmental control systems (ECS) that operate to control pressure and environmental conditions for improved passenger and crew comfort. When the ECS is switched off and exposed to cool and humid ambient air conditions, the temperature difference between the ECS and the ambient air may cause water condensation, which after a period of time leads to water accumulation at one or more locations of the ECS (i.e. , stagnant water). [0003] Conventional methods for preventing standing water include drilling holes in various locations of the ECS where water typically accumulates. Although the boreholes allow water to drain, the holes remain open regardless of whether the ECS is operating or shut down. As a result, the ...

AI Technical Summary

Problems solved by technology

However, when the borehole is sized too small, debris (eg, dust, dirt, etc.) can clog the hole and prevent water from draining properly from the ECS

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