PROBLEM TO BE SOLVED: To provide a food material mixer capable of improving agitation performance.SOLUTION: There is provided a food material mixer containing a mechanic flame and a mixing drum, which contains a drum body with an upper opening shape and a drum cover covering the upper opening of the drum body, rotatably supported by the mechanic flame around a drum rotation core shaft of a left-right direction and mixing a plurality of food materials in the mixing drum by rotary driving the drum body in one direction around the drum rotation core shaft, the mixing drum is formed with approximately the same shape of side face cross section shape of its inner space from left or right one terminal side to another terminal side, an expanded part expanding to outside from an arc making a drum rotation core shaft as a center and contacting an inner upper part of the drum cover is arranged in a preceding side and rear side of a rotation direction of the drum cover and an expanded part expanding to outside from an arc making the drum rotation core shaft as the center and contacting an inner bottom part of the drum body is arranged in a preceding side and rear side of a rotation direction of the drum body.COPYRIGHT: (C)2015,JPO&INPIT【課題】攪拌性能を向上させることができる食材混合機を提供する。【解決手段】機械フレームと、この機械フレームに左右方向のドラム回転軸芯回りに回転自在に支持された混合ドラムとを備え、混合ドラムは上部開口状のドラム本体と、ドラム本体の上部開口を塞ぐドラム蓋とを備えると共に、内部空間を左右に横断する攪拌棒を備え、ドラム本体をドラム回転軸芯回りに回転駆動することにより混合ドラム内部で複数の食材を混合する食材混合機であって、混合ドラムは、その内部空間の側面断面形状が左右一端側から他端側にかけて略同じ形状に形成されており、ドラム蓋の回転方向先行側及び後行側に、ドラム回転軸芯を中心とし且つドラム蓋の内面上部に接する円弧よりも外方に膨出する膨出部を設け、ドラム本体の回転方向先行側及び後行側に、ドラム回転軸芯を中心とし且つドラム本体の内面底部に接する円弧よりも外方に膨出する膨出部を設ける。【選択図】図19
