PROBLEM TO BE SOLVED: To provide a heat sterilizing apparatus capable of efficiently mixing steam into a raw material and heating it with a simple structure and facilitating maintenance, and a heat sterilizing method.SOLUTION: A steam blow-in type heat sterilizing apparatus is provided for blowing steam into a pipe 2 where a raw material to be sterilized flows, and mixing the steam with the raw material to sterilize the raw material while allowing a mixture to flow further downstream of the pipe 2. A heat mixing part 32 mixing the steam and the raw material in the pipe 2 is provided with a passage changing part 34 in which a first pipe 2m forming a passage in one direction (an X-direction) is connected to a second pipe 2n forming the passage in the other direction (a Y-direction), to change the flow direction of the raw material from the first pipe 2m toward the second pipe 2n, and the end of the passage formed in the one direction (the X-direction) at the passage changing part 34 is formed with a collision wall 41 causing the collision of the raw material and steam that have flowed in the one direction (the X-direction) to mix them.COPYRIGHT: (C)2014,JPO&INPIT【課題】シンプルな構造で効率的に蒸気を原料に混合し加熱することができ、メンテナンスが容易な加熱殺菌装置及び加熱殺菌方法を提供する。【解決手段】殺菌対象となる原料を流動させる管体2に蒸気を吹き込み、この蒸気と前記原料とを混合させてこれらを更に管体2の下流に向けて流動させつつ殺菌する蒸気吹き込み式加熱殺菌装置であって、管体2における蒸気と原料とを混合させる加熱混合部32には、流路を一方向(X方向)に形成する第1の管体2mと流路を他方向(Y方向)に形成する第2の管体2nとが連結して原料の流動方向を第1の管体2mから第2の管体2nへ向かって変更させる流路変更部34が設けられ、流路変更部34における一方向(X方向)に形成された流路の終端には、一方向(X方向)に流動してきた原料及び蒸気を衝突させてこれらを混合させる衝突壁41が形成されていることを特徴とする。【選択図】図3
