| CPC A23N 12/10 (2013.01) | 12 Claims |

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1. A drum roaster for roasting beans, the drum roaster comprising:
a housing arrangement comprising as operating elements at least a bean inlet arrangement and a bean outlet arrangement each of which are arranged at a front side of the housing arrangement;
a roasting drum for receiving the beans, the roasting drum being rotatably mounted in the housing arrangement;
a drive device which is configured to rotate the roasting drum;
a heating device which is configured to heat the beans; and
an insulation element which is configured to provide a thermal insulation, the insulation element being arranged at the front side in a region of the bean outlet arrangement, the insulation element comprising a cavity arrangement,
wherein,
the front side comprises a cover part on which the cavity arrangement is arranged, the cover part comprising a bean outlet opening in which is arranged a rotatably mounted closure flap element.
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