Rapid sliding roll-up door intended to be interposed between two environments with different temperatures

2:

• The roll-up door according to claim 1, wherein each guide path of a respective guide panel comprises a groove for sliding a corresponding lateral edge of the curtain, which groove includes in succession a vertical portion connected to the upper end of a respective guide rail of the portal structure, at least one first downwardly inclined portion and a substantially spiral portion for winding the curtain, said receiving seat for receiving the respective gear wheel being interposed between said at least one first downwardly inclined portion and said substantially spiral portion.

3:

• The roll-up door according to claim 2, wherein said sliding groove of each guide panel comprises a first downwardly inclined portion ending at the respective receiving seat for receiving the gear wheel, and a second downwardly inclined portion interposed between said seat and said substantially spiral portion.

4:

• The roll-up door according to claim 3, wherein said first and second downward inclined portions of said sliding groove have a different inclination, the second portion being more inclined than the first portion with respect to the horizontal, and extend along respective directions forming an acute angle between them.

5:

• The roll-up door according to claim 3, wherein the water collection tray has, beneath said receiving scats for receiving the gear wheels, a wall inclined upwards to direct towards its bottom the water coming from the portions of the curtain which are inclined downwards as a result of the presence of said first and second inclined portions of the sliding groove.

6:

• The roll-up door according to claim 5, wherein said upwardly inclined wall of the water collection tray comprises outwardly a gutter portion delimited by a vertical edge.

7:

• The roll-up door according to claim 6, wherein said shelter area for receiving the curtain is provided with an upper cover comprising a top wall inclined downwards in a manner substantially corresponding to said first portion of the sliding groove of each panel, and a substantially vertical front wall ending close to said gutter portion, at a distance from said wall inclined upwards of said tray.

8:

• The roll-up door according to claim 7, wherein each guide panel is supported by a respective stationary support plate fast with said wall with a possibility of relative elastic movement to and from the respective support plate against the action of return springs, to allow the distance between said guide panels to be automatically adjusted, said upper cover and said water collection tray being connected to said stationary support plates, the guide panels being mounted with a possibility of relative movement with respect to said upper cover and said tray.

9:

• The roll-up door according to claim 4, wherein the water collection tray has, beneath said receiving seats for receiving the gear wheels, a wall inclined upwards to direct towards its bottom the water coming from the portions of the curtain which are inclined downwards as a result of the presence of said first and second inclined portions of the sliding groove.

10:

• The roll-up door according to claim 9, wherein said upwardly inclined wall of the water collection tray comprises outwardly a gutter portion delimited by a vertical edge.

11:

• The roll-up door according to claim 10, wherein said shelter area for receiving the curtain is provided with an upper cover comprising a top wall inclined downwards in a manner substantially corresponding to said first portion of the sliding groove of each panel, and a substantially vertical front wall ending close to said gutter portion, at a distance from said wall inclined upwards of said tray.

12:

• The roll-up door according to claim 11, wherein each guide panel is supported by a respective stationary support plate fast with said wall with a possibility of relative elastic movement to and from the respective support plate against the action of return springs, to allow the distance between said guide panels to be automatically adjusted, said upper cover and said water collection tray being connected to said stationary support plates, the guide panels being mounted with a possibility of relative movement with respect to said upper cover and said tray.