Pouch assembly and container device using same

A container device for storing a liquid comprising:

• an external container in which a storage space is formed and which includes a container-side opening communicating with the storage space;
• and
• a pouch unit which is formed of an elastic material and in which a charging space for charging the liquid is formed, the pouch unit including a pouch assembly, a part of which is inserted into the storage space through the container-side opening, wherein the pouch unit includes a pouch unit body in which the charging space and a pouch-side opening communicating with the charging space on one side thereof are formed, a pouch-side catch which is formed on one side of the pouch unit body and in which an outer circumferential side thereof in a state in which the pouch-side catch surrounds the pouch-side opening further extends outward from an outer surface side of the pouch unit body, and a selective sealing unit which is disposed at an upper side of the pouch-side catch and selectively opens/closes the pouch-side opening, and
• the pouch-side catch and the selective sealing unit are disposed adjacent to the container-side opening,
• further comprising a plurality of guides that are disposed on an outer circumferential surface of the pouch unit body and are formed to protrude in a radial shape,
• wherein each guide includes a first region that comes into contact with an outer circumferential surface of the pouch unit body, and a second region that is formed to be bent from the first region and is disposed on a lower surface of the pouch-side catch, and
• wherein a plurality of fluid channels is formed along an outer surface of the pouch unit body and a lower surface of the pouch-side catch, and
• wherein each fluid channel of the plurality of fluid channels is disposed between one guide and the neighboring other guide.