Damped Gas Springs are compact devices integrating a gas spring and a damper in one unit, commonly used in moving masses at a specific velocity such as gates and door panels. As with dampers, the mass “M”, stroke “S” and time, ”T” are required to specify a damped gas spring. However, unlike dampers which generate a resisting force, damped gas springs output a controlled drive force capable of displacing the mass at the required velocity.
IGS damped gas springs are mainly categorized as fully damped and partially damped gas springs:
Fully damped gas springs can be described as damper units filled with nitrogen gas at high pressure (Figure 4). These units provide an even control through their stroke and can be used at any orientation.
Figure 4- Schematic of a fully damped gas spring
Partially damped gas springs can be described as compression gas springs filled with high volumes of oil (Figure 5). These springs create a two-stage damping effect as the piston is passing through the gas (considerably less viscous than oil) and oil regions.
Figure 5- Schematic of a partially damped gas spring