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Improved damp proofing system with outer ventilation

IP.com Disclosure Number: IPCOM000240452D
Publication Date: 2015-Jan-30

Publishing Venue

The IP.com Prior Art Database

Abstract

The present invention relates to a device (10) for extracting moisture from a wall (12), the device configured to be positioned in a hole, the device comprising: − a front part which defines two openings (16), the openings being configured to act as an air intake and an air exit, − a chamber which defines an inner space, wherein an air flow channel (24) for a main air flow (26) extends through the inner space between the air intake and the air exit, − a housing (28) which forms a housing wall (30), wherein the air flow (26) that flows through the air flow channel (24) carries off moisture.

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P31686PC00/WHA

Title: Device for extracting moisture from a wall

Field of the invention

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     The present invention relates to a device for extracting moisture from a wall or similar structure of a house or building. By extracting moisture from the wall or similar structure, the device regulates the humidity and reduces humidity problems.

Description of the prior art

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     Devices for extracting moisture from a wall or similar structure are known per se. EP0829587A1 (hereinafter: EP587) discloses an earlier device invented by the father of the inventor of the present invention.

EP587 discloses a device for extracting moisture from a wall or similar structure. The

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device, see in particular figure 1 of EP587, consists of air guide means 7 which can be applied in a hole 8 in a wall 2. The device defines an air guide channel 9 between two openings 10 - 11, which extend in different directions outside the wall 2. The air that flows through the air guide channel 9 carries off moisture originating from the wall 2. This device is characterized by means 13 which form a cover between the air guide channel 9 and a cavity 5, possibly present in the wall 2 or

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similar.

     The device of EP587 is suitable to remove moisture from the wall, including extracting moisture from a cavity which exists between an inner wall and an outer wall. The cover 13 between the air guide channel and the cavity 5 in the wall is permeable to water but forms a seal against air. 25

     NL2007920 (NL2007920) discloses a further device for extracting moisture from a wall of a building. The element comprises a pad 10 of a heat-insulating material at the back end of the element, see figure 2. The pad 10 is positioned against the inner wall of a cavity. The element further comprises grooves 81 for improving the moisture removal capacity.

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     FR2920796 discloses a device for extracting moisture from a wall. The device of FR2920796 is not very suitable for varying circumstances and is in particular not suitable for high temperature gradients.

EP0407290A1 discloses another device for extracting moisture from a wall. The device of

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EP0407290A1 is not very suitable for varying circumstances and is in particular not suitable for high temperature gradients.

Analysis and developed insights

In the present invention it was recognized that the required moisture removing capacity of

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such devices may vary widely in dependence on the circumstances in which they are applied.

     For instance, a wall that is moist may initially require a high moisture removing capacity, but once the wall has been dried sufficiently, this capacity can and should be lower. A lower moisture removing capacity may result in lower heat loss of the building, which lowers the cost of heating.

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     Furthermore, the type of wall which is encountered may vary widely. Some walls have a cavity and other walls do not. The cavity may be partially or wholly filled with heat insulation or may be completely empty...