Gas separator and gas separating method

A gas separating device, comprising:

• an airtight container including an inside partitioned from an outside by a partition wall;
• a gas outlet valve provided at the partition wall;
• and
• a gas separating membrane that constitutes at least a part of the partition wall,
• wherein the partition wall is constructed to move and/or deform at least partially by action of an external force to be able to decrease or increase an internal volumetric capacity of the airtight container;
• wherein a predetermined gas included in a gas existing in the inside of the airtight container is designed to be transmittable to the outside of the airtight container by pressure increase of the inside of the airtight container accompanying decrease in the volumetric capacity, or a predetermined gas included in a gas existing in the outside of the airtight container is designed to be transmittable into the inside of the airtight container through the gas separating membrane by pressure reduction of the inside of the airtight container accompanying increase in the volumetric capacity;
• and
• wherein the gas in the inside of the airtight container is designed to be able to be taken out through the gas outlet valve.

A gas separating device, comprising:

• an airtight container including an inside partitioned from an outside by a partition wall;
• a gas separating membrane that constitutes at least a part of the partition wall;
• and
• a covering member capable of airtightly covering the gas separating membrane from the outside or the inside,
• wherein the partition wall is constructed to move and/or deform at least partially by action of an external force to be able to decrease an internal volumetric capacity of the airtight container;
• wherein a predetermined gas included in a gas existing in the inside of the airtight container is designed to be transmittable to the outside of the airtight container by pressure increase of the inside of the airtight container accompanying decrease in the volumetric capacity;
• and
• wherein the covering member is constructed to be able to partition the inside of the airtight container and the outside in place of the gas separating membrane by covering the gas separating membrane from the inside of the airtight container or the outside.

A gas separating method comprising the steps of:

• preparing an airtight container in which at least a part of a partition wall partitioning an outside and an inside is constructed by a gas separating membrane, and a gas outlet valve is provided at the partition wall;
• increasing or reducing pressure of the inside of the airtight container by decreasing or increasing a volumetric capacity of a gas sealed in the airtight container by action of an external force;
• separating and discharging, or separating and absorbing a predetermined gas through the gas separating membrane by a pressure difference between the inside of the airtight container and the outside with the gas separating membrane therebetween;
• and
• taking out the gas existing in the airtight container through the gas outlet valve.

A gas separating device, comprising:

• an airtight container including an airtight chamber partitioned from an outside by a partition wall;
• a movable partition wall that is inside the airtight chamber and airtightly separates the airtight chamber into one airtight chamber and the other airtight chamber;
• a drive structure that reciprocatingly moves the movable partition wall in the airtight chamber;
• one gas separating membrane that constitutes at least a part of the partition wall which partitions the one airtight chamber and the outside;
• the other gas separating membrane that constitutes at least a part of the partition wall which partitions the other airtight chamber and the outside;
• one check valve that is provided at the partition wall to take out a gas existing inside the one airtight chamber to the outside;
• and
• the other check valve that is provided at the partition wall to take out a gas existing inside the other airtight chamber to the outside,
• wherein the movable partition wall is constructed to be able to change a volumetric capacity ratio of the one airtight chamber and the other airtight chamber in the airtight chamber while keeping airtightness by movement by the drive structure;
• wherein the one gas separating membrane is constructed to be able to separate and introduce a gas g1 included in a gas G into the inside of the one airtight chamber from the gas G into the one airtight chamber when total pressure P of the inside of the one airtight chamber becomes total pressure P1 (P>P1) or lower by increase in a volumetric capacity by movement of the movable partition wall;
• wherein the other gas separating membrane is constructed to be able to separate and introduce the gas g1 included in the gas G into the inside of the other airtight chamber from the gas G into the other airtight chamber when total pressure P′ of the inside of the other airtight chamber becomes total pressure P′1 (P′>P′1) or lower by increase in a volumetric capacity by movement of the movable partition wall;
• wherein the one check valve is constructed to allow the inside of the one airtight chamber and the outside to communicate with each other to be able to discharge the gas g1 existing in the inside of the one airtight chamber to the outside when the total pressure P1 of the inside of the one airtight chamber becomes P2 (P2>P1) by decrease in the volumetric capacity of the inside of the one airtight chamber by the movement of the movable partition wall;
• and
• wherein the other check valve is constructed to allow the inside of the other airtight chamber and the outside to communicate with each other to be able to discharge the gas g1 existing in the inside of the one airtight chamber when the total pressure P′ 1 of the inside of the other airtight chamber becomes P′2 (P′2>P′1) by decrease in the volumetric capacity of the inside of the other airtight chamber by the movement of the movable partition wall.