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Window

Details

Inventors: Grether, Paul; Brader, Kurt; Keller, Bruno;
Assignee: Sulzer Brothers Limited (Winterthur, CH)
Primary Examiner:
Assistant Examiner:
Attorney, Agent or Firm:

The double pane window is provided with a drying chamber which is filled with desiccant and an antechamber which extends from the drying chamber to communicate with the surrounding environment at the opposite end. The antechamber prevents a direct exit of dry air from the enclosed space between the window panes into the surrounding atmosphere during "breathing" of the window as well as drawing in of moist ambient air into the drying chamber. The antechamber also brings about a considerable increase in the diffusion resistance for the water vapor diffusion into the desiccant or the space between the window panes.

DETAILED DESCRIPTION What is claimed is: 1.
A window having at least two panes disposed in spaced relation to define a space therebetween; a drying chamber extending at least over a partial length of said panes and communicating with said space adjacent one end of said chamber; a desiccant in said drying chamber which is characterized in being a dust filter and an absorbent for gaseous pollutants; means for opening said drying chamber to permit removal of desiccant; and an antechamber extending at least over a partial length of said panes, said antechamber communicating at one end with a second end of said drying chamber and having at least one opening at an opposite end of said antechamber to communicate with a surrounding environment for pressure compensation.
2.
A window as set forth in claim 1 wherein said antechamber has a cross-sectional area smaller than the length thereof.
3.
A window as set forth in claim 2 wherein said cross-sectional area of said antechamber is in a ratio of not more than 2.
times.
10.
sup.
-4 m relative to said length thereof.
4.
A window as set forth in claim 1 wherein each said pane is of rectangular shape, said drying chamber extends over at least one side length of said panes and said antechamber extends over at least one side length of said panes.
5.
A window as set forth in claim 1 wherein said drying chamber and said antechamber each extend over the circumference of the window.
6.
A window as set forth in claim 1 further having a corrosion-susceptible reflecting layer on at least one of said panes within said space and particles of corrosion-susceptible material in said drying chamber.
7.
A window as set forth in claim 1 wherein said antechamber has a plurality of openings at said opposite end thereof, each said opening having a small cross-sectional area to throttle a flow of air from said antechamber to the surrounding environment.
8.
A window as set forth in claim 7 wherein said antechamber occupies a volume of at least 100 cubic centimeters per square meter of pane surface

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