WINDOW FRAME WITH AIR SUPPLY DUCT

Abstract

 A plastic window frame for a roof window comprising an upper stile (1), a lower stile (2) and two side stiles (3) joined using a heat welding method so that the frame stiles are attached to each other in window frame corners, chambers are located in the window frame stiles, and in the upper stile there is a ventilation channel with outlet opening (61) and inlet opening (62), and vent (4) is located in the ventilation channel which constitutes the ventilation air flow path, and vent (4) is a plastic element and its volume is limited by its back wall (41) and front wall (42).

Description

[0001] The object of the invention is a window frame, and in particular a roof window with a ventilation channel in the window frame upper stile.

[0002] A roof window with a ventilation channel in the frame upper stile is disclosed in patent PL217419B1. The timber frame comprises a ventilation channel, wherein its outlet terminating with a ventilation grille and the inlet located under the roof window hood.

[0003] The aim of the invention is a plastic window frame, comprising an upper stile, a lower stile and two side stiles joined using a heat welding method. Window frame stiles comprises a chamber structure and are constructed out of an inner wall, an outer wall as well as a top wall and a bottom wall. There is a ventilation channel in the chambers of the upper stile. The ventilation channel comprises a vent, in the form of a plastic element, wherein the vent determines the air flow path of the ventilation air. The volume of the vent is limited by its back wall and front wall, which are joined, preferably by a snap connector. The vent's ventilation channel inlet opening is located in the upper stile top wall, between the vent front wall and vent back wall. The outlet opening located in the vent front wall leads to the ventilation channel outlet in the inner wall of the frame upper stile. The intake opening and the outlet opening are essentially perpendicular relative to one another. The vent back wall abuts the upper stile bottom wall, and the vent front wall and back wall comprises a back wall shelf and a front wall shelf respectively to seat them on an appropriate window frame upper stile outer wall stub and inner wall stub. The vent outlet opening is terminated with a ventilation air flow adjuster. The air flow adjuster also comprises a flange, attached using a means of attachment, and in particular an attachment screw, to the upper stile inner wall. There is sealing material between the upper stile inner wall and air flow adjuster flange. Air flows through the ventilation channel outlet opening. The flow is adjustable. To that end the air flow adjuster features a slider to adjust the shutter. In the ventilation channel fully open position, the shutter is retracted into the vent. Once the ventilation channel is closed, the shutter fills the opening in the window frame upper stile inner wall, blocking ventilation air flow. The window frame vent may also feature a shutter to adjust the air flow depending on pressure or humidity differences between the interior and exterior sides of the window frame.

[0004] Use of the vent in the window frame ventilation channel makes it possible to stop air from penetrating into chambers inside the stile causing condensation and ensures laminar flow of ventilation air stream.

[0005] The illustration depicts the window frame according to the invention, with given figures depicting the following:

Fig. 1 spatial view of window frame,

Fig. 2 spatial view of vent,

Fig. 3 cross-section of upper stile with vent and air flow adjuster.

[0006] The window frame according to the invention comprising a plastic upper stile 1, lower stile 2 and two side stiles 3. Each stile comprises an inner wall 11, an outer wall 12 as well as a top wall 13 and a bottom wall 14. There are chambers between stile walls. Inside the upper stile there is a ventilation channel with inlet opening 62 in upper stile top wall 13 and outlet opening 61 in upper stile inner wall 11. Vent 4 is in the ventilation channel.

[0007] Vent 4 is a plastic element and comprises a back wall 41, and a front wall 42 with opening 421 leading to ventilation channel outlet opening 61. The opening leading to ventilation channel inlet opening 62 is located in the top part of the vent, between front wall 42 and back wall 41. Whereas front wall 42 and back wall 41 are joined by a snap fastener along the vent side edge. Air flow adjuster 5 is located in ventilation channel outlet opening 61. Air flow adjuster 5 comprises a flange 51, which, once installed, is located on upper stile 1 inner wall 11. Air flow adjuster 5 also comprises a slider 52 to control the position of its shutter which is inside vent 4 when the ventilation channel is open. Vent front wall 42 features front wall shelf 422 and back wall 41 features back wall shelf 412 to seat them on appropriate upper stile 1 inner wall stub 111 and outer wall stub 112.

Claims

1. The window frame for a roof window, made out of plastic, comprising:

- an upper stile (1),

- a lower stile (2),

- two side stiles (3), so that the frame stiles are attached to each other in window frame corners by a welding,

- a chambers are located in the window frame stiles, and in the upper stile there is a ventilation channel with an inlet opening (61) and an outlet opening (62), and vent (4) is located in the ventilation channel which constitutes the ventilation air flow path, characterized in that vent (4) is a plastic element and its size is limited by its back wall (41) and front wall (42).

2. The window frame according to claim 1 characterized in that the inlet opening (62) and the outlet opening (61) are essentially perpendicular relative to one another.

3. The window frame according to claim 1, or 2 characterized in that the opening leading to ventilation channel inlet opening (62) is located between vent front wall (42) and vent back wall (41) and that in the front wall an opening (421) is located which leads to ventilation channel outlet opening (61).

4. The window frame according to claim 1 or 2, or 3 characterized in that upper stile (1) comprises an outer wall (12), an inner wall (11), a top wall (13) and a bottom wall (14) so that vent (4) air flow adjuster (5) is located in inner wall (11) in the outlet opening (61).

5. The window frame according to claim 1 or 2, or 3, or 4 characterized in that vent (4) front wall (42) and vent back wall (41) comprises a front wall shelf (422) and a back wall shelf (412) arranged to be respectively seated on appropriate upper stile (1) inner wall stub (111) and an outer wall stub (112).

6. The window frame according to claim 1 or 2, or 3, or 4, or 5 characterized in that vent back wall (41) abuts window frame upper stile (1) bottom wall (14).

7. The window frame according to claim 1 or 2, or 3, or 4, or 5, or 6 characterized in that the vent features a shutter to adjust ventilation air flow.

8. The window frame according to claim 7 is characterized in that the shutter is controlled on the basis of pressure differences between the interior and exterior sides of the window frame.

9. The window frame according to claim 7 is characterized in that the shutter is controlled on the basis of humidity differences between the interior and exterior sides of the window frame.

Drawing