Fuel cell with drainage system for water or steam

摘要

The aim of the invention is to provide a fuel cell from which the water produced can be easily removed and for which external wetting is not necessary. The water or water-containing vapour originating in the fuel cell is passed into a water separator where it is condensed. The water separator (2) has a control device in the form of a valve (6) which automatically empties it. A commercially available water separator can be used, with a float valve which opens as soon as enough condensate water is present. Also fitted is a control device designed to control the water or water-vapour outlet. This device is located either in front of or behind the water separator. An inexpensive needle valve has been found to be suitable for use as this device, which can be automated and gives a controlled output flow of water or water-vapour/gas mixture. Oxygen losses can thus be minimized to the extent that they become negligible.