Gas controlling method inside closed container

Abstract

Abstract PURPOSE:To control gas in a closed container simply and at a low cost by separating specific gas by means of a first gas separating membrane, and sucking other specific gas into a vacuum closed container by a second gas separating membrane. CONSTITUTION:Air inside a closed container 11 of a CA refrigerator or the like is sent to a gas separator 12 by a blower 15. The gas is divided by a gas separating membrane 14 into a high-pressure side 12a and a low pressure side 12b by a gas separating membrane 14, permeating the gas separating membrane 14 for separating O2 and CO2 in the air and is exhausted by a vacuum pump 18, and non-permeable gas rich in N2 is returned to the closed container 11 through a returning tube 17. Non-permeable gas rich in N2, out of the air sent to a gas separating membrane 22 of the second gas separator 13, is fed to the evacuated container 11 to prevent the container from being damaged, or the atmosphere from mixing therein. O2 and CO2 which have permeated the gas separating membrane 22 are exhausted out of an exhausting pump 26.

Inventors

• 👤 Keisuke Kasahara
• 👤 敬介 笠原
• 👤 Shinichi Nishimura
• 👤 伸一 西村

Bibliographic Details