公开(公告)号：EP0409324A1

公开(公告)日：1991-01-23

申请号：EP90201891.0

申请日：1990-07-12

申请人： WHIRLPOOL INTERNATIONAL B.V.

发明人： Celegin, Mario ,  Damsteegt, Johannes Arie Gijsbert Pieter

IPC分类号： F24C15/32 ,  F24C7/00 ,  A21B1/26

CPC分类号： F24C15/325

摘要： The invention relates to a hot air oven in which a fan provided with an impeller (12) circulates air past heating elements (26) located in the periphery of the impeller. The air is sucked in into the center of the impeller (12) from the oven cavity and is thrown out from the impeller (12) past the heating elements (26) in order to be reintroduced through apertures at the edges of the oven cavity into the cavity. In order to eliminate the tangential velocity component of the airflow leaving the fan and improve the heat transfer from the heating elements to the airflow and due to that obtain a more uniform heat distribution in the oven cavity a fan provided with airflow guiding means (25) is located on or beyond the heating elements viewed in a radial direction from the center of rotation of the impeller.

摘要翻译： 本发明涉及一种热空气炉，其中设有叶轮（12）的风扇将空气循环通过位于叶轮周边的加热元件（26）。 空气从烘箱腔吸入叶轮（12）的中心，并从叶轮（12）中经过加热元件（26）排出，以便通过烤箱腔边缘的孔再次引入到 空腔。 为了消除离开风扇的气流的切向速度分量并且改善从加热元件到气流的热传递，并且由于在炉腔中获得更均匀的热分布，设置有气流引导装置（25）的风扇 位于从叶轮的旋转中心的径向方向观察的加热元件之上或之上。