Collecting vessel for e.g. magnesium alloy, has cover attached to edge of vessel pot and having outer shell and inner shell, where airspace is formed between outer shell and inner shell and is externally open via outlet
摘要
<p>The vessel has a cover (10) attached to an edge (7) of a vessel pot (2). The cover has an outer shell and an inner shell. Airspace (16) is formed between the outer shell and the inner shell. The airspace communicates with an inner space of the vessel pot over a ventilation opening that is placed in the inner shell. The airspace is externally open via an outlet provided on the margin of the cover.</p>
