Flexible or portable closure – partition – or panel – Plural and/or with rigid closure – Roll type
Patent
1994-04-28
1997-10-21
Purol, David M.
Flexible or portable closure, partition, or panel
Plural and/or with rigid closure
Roll type
160 41, E06B 908
Patent
active
056786220
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a roll-up heat insulation device in the form of a planar structure for making available air-filled, circulation-free compartments, whose volume, when rolled up, can be further reduced and which is constructed in the form of a heat insulating mat.
BACKGROUND OF THE INVENTION
Roll-up heat insulation devices have been developed in widely varied versions. In the rolled-up state, the heat insulation device should take up as small a volume as possible, while at the same time providing a heat insulation effect subsequent to unrolling. Thus, by way of example, EP-PS 0 160 686, discloses a roll-up heat insulation device whose particular advantage resides in the circumstance that, when being unrolled, automatic, large-volume air chambers are formed, into which air is drawn by suction laterally. When rolled up, these air chambers are compressed so that the planar heat insulating structure takes up very little space and, for this reason, can be readily accommodated inside a take-up box. NL-A-78 05 464, discloses a roll-up heat insulation device in the form of a planar structure which, in the unrolled state, forms a multichamber system for providing air-filled, preferably circulation-free compartments, whose volume can be reduced when being rolled up and which is constructed in the form of a heat insulating mat which possesses at least two consecutively disposed foils, in which, spaced-apart distance webs are disposed between two adjacent foils.
SUMMARY OF THE INVENTION
The present invention relates to the problem of developing a roll-up heat insulation device in such a way that, with a continued modest space requirement in the taken-up or rolled-up state, better heat insulation values can be achieved while, at the same time, increasing the transparency and the provision of additional light-controlling effects.
This problem is resolved with the planar structure to be constructed in the form of a multilayer insulating mat which possesses at least two consecutively disposed, highly transparent foils, whose reciprocal parallel distance is controllable by means of webs that are offset in the vertical distance and which are flexibly connected with adjacent foils in each case. With the heat insulating mat in the rolled-up state, the webs take up only a very small space, such that the thickness can be kept at a value of below 1 mm, In the unrolled state, the webs are utilized for spreading the consecutively disposed foils apart, and in a fashion similar to a controlling parallelogram becomes widest when the angle between web and foil surface is 90.degree.. In this position, the parallelogram at the same time attains its greatest horizontal bracing.
Relative to the very small space required after being rolled up, a maximum hollow space volume can be effective for providing heat insulation. In this connection an additional advantage results in that the spacing webs, by means of pertinent coatings, can also be used for selectively controlling the light conditions in a building whose windows are equipped with the roll-up heat insulation device according to the invention, by changing the angular positions of the webs relative to the foil surfaces.
Since the hollow spaces enclosed between the consecutively disposed foils can be closed laterally with the aid of a controlled closing means, all circulation in the heat insulation chambers can be eliminated and the heat insulating effect additionally improved. According to a first embodiment, the closing means is formed by two laterally disposed closing plates which, when the heat insulation mat is fully extended, can then be urged laterally against the mat while under a time-related control. In the process, an elastic sealing layer is preferably used which largely protects the heat insulating mat structure from damage.
A particularly simple method of controlling the distance between adjacent foils results with the use of weights on each foil. It has been shown that the weights, in connection with the vertically spaced-apart
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patent: 4453584 (1984-06-01), Steele
patent: 4506720 (1985-03-01), Iwanicki
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