Patent ID: 8250968

Claim:
Wort copper ( 1 ) comprising an external boiler ( 7 ) arranged outside of the wort copper ( 1 ), the external boiler cyclically heating wort from the wort copper ( 1 ), wherein the heated wort is re-supplied to the wort copper ( 1 ), an infeed tube ( 16 ) as well as a rising pipe ( 18 ) arranged above the infeed tube ( 16 ), through which said rising pipe wort in the wort copper ( 1 ) heated by the external boiler ( 7 ) rises upwards, the upper end of the infeed tube ( 16 ) abutting at a lower end portion of the rising pipe ( 18 ) in a manner that at least one intake opening ( 26 ) is formed between the infeed tube ( 16 ) and the rising pipe ( 18 ) for sucking in wort from a wort reservoir ( 30 ) of the wort copper, and wherein the cross-sectional surface of the rising pipe enlarges at least section-wise towards an upper end of the rising pipe ( 18 ) that includes a conically tapering tube whose outer wall is inclined at an angle β≧5° with respect to a central axis L of the rising pipe.