Patent ID: 8177889

Claim:
A gas removal device comprising: a decompression chamber with an inlet and an outlet through which a liquid to be degassed flows therein and thereout; and a degassing element that is accommodated in the decompression chamber while having one end connected to the inlet and another end connected to the outlet, and that allows the liquid to be degassed entering into the inlet to passes through the degassing element, wherein: the degassing element includes a tube bundle composed of a plurality of flexible gas-permeable tubes, and a plurality of tying members tying the plurality of gas-permeable tubes at a plurality of points along a longitudinal direction of the tubes to form the tube bundle; the degassing element is accommodated in the decompression chamber in such a manner that at least a part of the tube bundle makes a bent portion formed by bending the tube bundle; the tying members are disposed on at least a part of the bent portion; each of the plurality of tying members is gas permeable and comprises a porous film; and the plurality of tying members wind around the tube bundle to tie the plurality of gas-permeable tubes into one bundle in such a manner that the gas-permeable tubes can move back and forth in the longitudinal direction of the gas-permeable tubes.