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Drain valve, exterior aircraft light unit and power supply box

A technology of discharge valve and aircraft, applied in the field of power box, can solve problems such as reducing functions, and achieve the effect of reliable cost

Inactive Publication Date: 2018-12-04
古德里奇照明系统有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excessive water inside the lamp unit will reduce its function

Method used

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  • Drain valve, exterior aircraft light unit and power supply box
  • Drain valve, exterior aircraft light unit and power supply box
  • Drain valve, exterior aircraft light unit and power supply box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Figure 1A A schematic cross-sectional view of an exterior aircraft light unit 2 with a discharge valve 20 according to an exemplary embodiment of the present invention is depicted.

[0033] Figure 1AThe illustrated exterior aircraft light unit 2 includes a housing 12 . At least one side of the casing 12 is configured as a transparent outer cover 10 . The transparent outer cover 10 may be formed as a lens, and thus may also be referred to as a lens cover 10 . The structural wall 8 supporting the light source 4 is arranged opposite to the transparent outer cover 10 , so that a closed space 14 is formed between the transparent outer cover 10 and the structural wall 8 . An electrical control circuit configured for controlling the operation of the light source 4 is arranged on the rear side of the structural wall 8 facing away from the enclosed space 14 . A rear side wall 13 of the housing 12 opposite to the transparent outer cover 10 is formed or provided with at least ...

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PUM

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Abstract

A drain valve (20) for draining liquid from an enclosed space (14) comprises a movable plunger (42), which is movable between a closed position in which the plunger (42) does not allow liquid to flowthrough the drain valve (20), and at least one open position, in which the plunger (42) allows liquid to flow through the drain valve (20); and an elastic element (40; 54), which is configured to urgethe movable plunger (42) into its closed position. The plunger (42) is provided with at least one duct (44) extending through the plunger (42) and allowing fluid to flow through the drain valve (20)when the plunger (42) is positioned in its closed position, wherein said at least one duct (44) is closed by a semi-permeable medium (48), which is permeable for air and water vapor and impermeable for liquid water.

Description

technical field [0001] The present invention relates to a drain valve, in particular to a drain valve usable in an external aircraft light unit and / or in a power supply box for an external aircraft light unit. The invention further relates to an external aircraft light unit and a power box for an external aircraft light unit with such a discharge valve. Background technique [0002] Almost all aircraft are equipped with external aircraft light units. In particular, large passenger aircraft are provided with various exterior lights. Examples of such lights include navigation or position lights, beacon lights, anti-collision lights or strobe lights, wing lights, taxi lights, landing lights, runway turning lights, etc. All these lamps are each provided with at least one light source. [0003] Since air pressure varies with altitude, the external aircraft light unit requires ventilation during flight to avoid excessive low and / or overpressure build up within the external airc...

Claims

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Application Information

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IPC IPC(8): F16K17/04B64D47/02
CPCF21S45/30B64D47/02H05K5/0213F16K1/32F21V31/03F16K17/04F16K15/023F16K24/00B64D2221/00
Inventor A.黑斯林-冯海门大尔A.K.贾S.吕德R.斯里尼瓦萨墨菲
Owner 古德里奇照明系统有限责任公司
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