GAS-PERMSELECTIVE PNEUMATIC PUMP AND INCUBATOR USING THE SAME

摘要

A pneumatic pump having a construction wherein a D.C. voltage is applied between first and second electrodes of a planar molded article comprising a first electrode, an electrolyte and a second electrode, the first and second electrodes being formed on both surfaces of a solid electrolyte layer, while the solid electrolyte layer is heated to a predetermined operating temperature. The pump can selectively exhaust or supply at least an oxygen gas from a first atmosphere to a second atmosphere. Therefore, an oxygen-poor atmosphere or an oxygen-rich atmosphere can be established to keep an atmosphere suitable for preserving food and the inside of a room, which is likely to become oxygen-poor at the time of warming, under an oxygen-rich condition. The oxygen gas can be replaced by the steam, whenever necessary, and its exchange ratio can be controlled by controlling the electrolytic voltage. Further, since the quantity of the oxygen gas and the steam to be transported can be measured by electric current, the atmosphere control is easy.