Heat and sound-insulating double glazing unit for old windows - filled with gaseous sulphur hexafluoride, helium or pure hydrogen

摘要

Heat- and sound-insulating double glazing unit for old windows comprises an inner pane whose dimensions are shorter than those of an outer pane, and spacer strips which extend between the two panes near the circumferential edges of the panes. The two panes are connected via the spacer strips to form a unit, and the free space between the panes is filled with a gas comprising SF6, He or pure H2. The gas provides excellent sound and thermal insulation. For installation, the window needs only to be removed from the runners and the old pane removed, then the two panes of the above unit can be inserted in the old window frame.