| 摘要 |
PROBLEM TO BE SOLVED: To increase comfortableness at the time of heating operation, by sending hot air to a distance so as to uniform the room temperature, while preventing temperature rise at a partial floor surface, in a hot air heater, such as an oil fan heater. SOLUTION: Transverse vanes 20 are horizontally provided below a diffuser 19, and further, two uni-flow guide vanes 21, each having a larger area than each of the transverse vanes 20, are provided over the diffuser 19 in a downwardly inclined manner. Thus, comparatively high temperature air which is diffused from below the diffuser 19, is held down by comparatively low temperature air which is diffused as a laminar flow from over the diffuser 19, thereby restraining the former from going up. In addition, the comparatively low temperature air is sufficiently placed at an angle by the larger-area uni-flow guide vanes 21. |
