Device and method for cooling a component contacting a glass melt

A method for the cooling of a component of a glass melting plant that contacts a glass melt, the component having at least one open cavity, the method comprising the steps of:

• introducing a pipe with an open pipe end into the cavity in the component so that a peripheral annular space is formed between the outer surface of the pipe and the inner surface of the cavity, while maintaining an axial distance S between the pipe end and the base of the cavity;
• and
• during the operation of the glass melting plant, introducing a cooling medium through the pipe into the cavity so that it is deflected at the base of the cavity, flows back in the annular space, and flows out of the cavity,
• wherein, in its pipe segment introduced into the cavity, the pipe has a constriction, and in a region of the constriction has perforations through the pipe walls, whereby the cooling medium is accelerated in its passage through the constriction in the inside of the pipe, and a portion of the cooling medium flowing back from the annular space is aspirated into the inside of the pipe.