| 摘要 |
<p>PURPOSE:To obtain the new heating method of food capable of stably preserving food over a long period in a compact container by inserting and arranging a floor cushion-shaped iron powder heating element sealed by a permeable packing material in the container with an intake hole at the lower section and an exhaust hole at the upper section then sealing the container with a barrier film. CONSTITUTION:An iron powder heating element sealed in a floor cushion shape by a permeable packing material is inserted and arranged in a container with the structure to continue the smooth contact between the heating element and the inflow air and having an intake hole at the lower section and an exhaust hole at the upper section so that a space where the air can smoothly flow in through the intake hole is provided below food. The container is sealed by a barrier film, when the barrier film is opened as required, the heating element is sensitively reacted with oxygen in the air at the room temperature and heated, concurrently steam is generated. The food is automatically heated. It is optimum that the ventilation cross section of the exhaust hole has the area of 0.5-5% against the air contact face below the heating element, on the other hand the ventilation cross section of the intake hole may be the same or more than the exhaust hole.</p> |
