| 摘要 |
<p>According to the present specification, disclosed is a volume variable gas lifter, wherein the internal pressure of a cylinder varies depending on temperature conditions and a temperature compensation member inside the cylinder is extended and compressed in accordance with temperature conditions to move a piston and make the gas lifter vary the internal volume to correspond to the pressure. Therefore, the reaction variations of the gas lifter in accordance with temperature conditions can be prevented as the pressure change due to temperature conditions is corrected by the internal volume change of the cylinder. In other words, the volume variable gas lifter resolves problems relating to an excessive closing force in the summer and a bearing capacity shortage in the winter as the reaction of a gas spring is maintained at a proper level in an area where the temperature difference is huge in the summer and the winter.</p> |
