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EP-4253858-B1 - DOOR OR WINDOW VENTILATION ASSEMBLY

EP4253858B1EP 4253858 B1EP4253858 B1EP 4253858B1EP-4253858-B1

Inventors

  • Rahimi, Darius

Dates

Publication Date
20260506
Application Date
20230321

Claims (14)

  1. An indoor airflow control unit (1) for a door or window ventilation assembly, the indoor airflow control unit (1) comprising: a. a unit housing (11) defining a housing chamber, the unit housing (11) further defining: i. a first airflow opening (111) being configured for exchanging airflow between the housing chamber and the environment outside of the unit housing (11); and ii. a second airflow opening (112) being arranged at a back side of the unit housing (11) and being configured for exchanging airflow between the housing chamber and the environment outside of the unit housing (11); b. a lid structure (2) comprising one or more protruding gripping noses (28) which penetrate through the first airflow opening (111), thereby serving as stoppers by contacting the unit housing (11) and preventing further rotation in one direction of the lid structure (2), the lid structure (2) further comprising a roller structure (20) being configured for opening and closing the first airflow opening (111) by rotatably moving the lid structure (2) between an open position in which airflow can flow through the first airflow opening (111) and a closed position in which airflow is prevented from flowing through the first airflow opening (111), wherein the lid structure (2) is configured to be positioned in more than two positions, in particular two fixed positions, wherein the roller structure (20) comprises at each, along its rotational axis oppositely arranged end portions a securing mechanism (29) being configured for securing a specific position of the roller structure (20) with respect to the unit housing (11) by frictional lock and/or form lock, wherein: i. the securing mechanisms (29) comprise a plurality of projections and the unit housing (11) comprises corresponding notches in which the projections can engage, or wherein a plurality of projections are arranged on the unit housing (11) facing the roller structure (20) and corresponding notches are arranged at the end portions of the roller structure (20), wherein the projections and notches are configured such that at least some of the projections can engage with at least some of the notches, thereby forming a form-locking connection; ii. and/or wherein the securing mechanisms comprise a friction layer.
  2. The indoor airflow control unit (1) according to claim 1, wherein the lid structure (2) is configured to be infinitely variable into positions, in particular fixed positions, between the open position and the closed position.
  3. The indoor airflow control unit (1) according to claim 1 or 2, wherein the lid structure (2) is configured to be manually positioned in more than two fixed positions.
  4. The indoor airflow control unit (1) according to any of the preceding claims, wherein the roller structure (20) is configured such that it further prevents in the closed position airflow partially or fully from flowing through the second airflow opening (112).
  5. The indoor airflow control unit (1) according to any of the preceding claims, wherein the roller structure (20) defines one or more airflow ducts (21, 22), wherein each airflow duct (21, 22) has an airflow duct inlet and an airflow duct outlet, and wherein the one or more airflow ducts (21, 22) are configured to provide in the open position a fluid connection between the first airflow opening (111) and the second airflow opening (112).
  6. The indoor airflow control unit (1) according to any of the preceding claims, wherein the roller structure (20) is configured such that rotatably moving the roller structure (20) from the closed position towards the open position results in increasing an open area of the first airflow opening (111) and optionally concomitantly in increasing an open area of the second airflow opening (112); and/or wherein the roller structure (20) is configured such that rotatably moving the roller structure towards the closed position results in decreasing an open area of the first airflow opening (111) and optionally concomitantly in decreasing an open area of the second airflow opening (112).
  7. The indoor airflow control unit (1) according to claim 5 or 6, wherein the roller structure (20) comprises a cylinder shape, wherein the one or more airflow ducts (21, 22) penetrate through the cylinder shape, in particular the cylinder surface shell, wherein preferably the one or more airflow ducts (21, 22) are configured such that in the open position, in particular in all positions except the closed position, airflow can flow from the second airflow opening (112) to the first airflow opening (111) and preferably through the first airflow opening (111).
  8. The indoor airflow control unit (1) according to claim 7, wherein the roller structure (20) comprises two cylinder shell portions (23, 24) which are spaced apart from each other to define a first slot as the airflow duct inlet of the airflow duct (21, 22) and a second slot as the airflow duct outlet of the airflow duct (21, 22).
  9. The indoor airflow control unit (1) according to any of claims 5 to 8, wherein the roller structure (20) comprises spacer structures (25, 26), which at least partially delimit the one or more airflow ducts (21, 22), wherein preferably the spacer structures (25, 26) are arranged between the two cylinder shell portions (23, 24).
  10. The indoor airflow control unit (1) according to any of the preceding claims, wherein the roller structure (20) comprises at each, along its rotational axis oppositely arranged, end portions a pivoting pin element (27), such as a trunnion, by which it is rotatably mounted to the unit housing (11).
  11. A door or window ventilation assembly (100) comprising the indoor airflow control unit (1) according to any of claims 1 to 10 and an outdoor air collection unit (3).
  12. The door or window ventilation assembly (100) according to claim 11, wherein the outdoor air collection unit (3) comprises: a. an air collection unit housing (31) defining an air collection unit inlet (32) and an air collection unit outlet (33), wherein the air collection unit inlet (32) and the air collection unit outlet (33) are perpendicular to each other, wherein the air collection unit housing (31) comprises a continuous roof structure (311); b. a slot grating (34) being arranged between the air collection unit inlet (32) and the air collection unit outlet (33).
  13. Use of an outdoor air collection unit (3) together with the indoor airflow control unit (1) according to any of claims 1 to 10 in a door or window ventilation assembly (100).
  14. The use according to claim 13, wherein the outdoor air collection unit (3) comprises: a. an air collection unit housing (31) defining an air collection unit inlet (32) and an air collection unit outlet (33), wherein the air collection unit inlet (32) and the air collection unit outlet (33) are perpendicular to each other, wherein the air collection unit housing (31) comprises a continuous roof structure (311); b. a slot grating (34) being arranged between the air collection unit inlet (32) and the air collection unit outlet (33).

Description

Field of invention The present invention lies in the field of building ventilation, in particular window and/or door ventilation assemblies and relates to an indoor airflow control unit for a door or window ventilation assembly, a door or window ventilation assembly and the use of an outdoor air collection unit together with the indoor airflow control unit in a door or window ventilation assembly. Background, prior art Window and/or door ventilation assemblies are known for efficiently providing additional ventilation to a building via the window or door frame. Such a frame, or also the door/window itself may either comprise factory built-in through holes or alternatively, such holes may be drilled retroactively into the frame. A window or door ventilation assembly typically consists of two main parts, an indoor unit being attached on the interior facing side of the window or door and an outdoor unit being attached on the outside of the building facing the outer environment. Fresh air can then flow from the outside via the outdoor unit through the holes in the window or door frame and then be provided to the interior of the building via the indoor unit. However, in prior art assemblies, airflow control is often insufficient, unreliable and/or requires elaborated mechanisms, including many different single parts or even drive units. Furthermore, many prior art devices do not sufficiently prevent water, such as rain water, from entering the interior of a building. Prior art devices are for example disclosed in GB 2 254 138 A, EP 2 954 140 B1, FR 3 105 374 A1, FR 2 899 930 A1. Summary of disclosure It is therefore a general object of the invention to advance the state of the art in the field of window and/or door ventilation assemblies and preferably to overcome one or more of the disadvantages of the prior art fully or partly. In advantageous embodiments, an indoor airflow control unit is provided which allows to accurately control the airflow through a window or door ventilation assembly, preferably in a reliable and efficient manner. Particularly, an indoor airflow control unit is provided which does not require electrical devices or other types of drive units. In further advantageous embodiments, an indoor airflow control unit is provided which allows the user to select a large variety of different airflows, in particular in a reliable manner, that is, without undesired airflow adjustments due to external influences, such as the wind. In further advantageous embodiments, an outdoor air collection unit is provided which efficiently allows to prevent water from entering the interior of the building. The general object is achieved by the subject-matter of the independent claims. Further advantageous embodiments follow from the dependent claims and the overall disclosure. A first aspect of the invention relates to an indoor airflow control unit for a door or a window ventilation assembly according to claim 1. It is understood that the term "indoor" means that such a unit is envisioned or configured to be installed on the inside of a building facing the interior of the building. The indoor airflow control unit comprises a unit housing, which defines a housing chamber. Furthermore, the unit housing defines a first airflow opening and a therefrom separated second airflow opening. The first airflow opening is configured for allowing the exchange, i.e. for exchanging, airflow between the housing chamber and the environment outside of the unit housing, that is, an outside unit housing environment. The second airflow opening is arranged at a back side of the unit housing and is configured for allowing the exchange, i.e. for exchanging, airflow between the housing chamber and the environment outside of the unit housing. The back side of the unit housing is the side which is configured to be mounted to the window or door. In the mounted state, the back side therefore faces the window or door and enables fluid communication between the holes or openings in the window or door and the housing chamber. Typically, the back side of the unit housing may be planar, which allows to easily mount the unit housing to the window or door. Additionally, the indoor airflow control unit comprises a lid structure which is configured for opening and closing the first airflow opening by rotatably moving the lid structure between an open position and a closed position. It is understood that such a rotational movement as described herein relates to a rotational movement of the lid structure, in particular roller structure, with respect to the unit housing. In the open position, e.g. any open position, airflow can flow through the first airflow opening of the unit housing and in the closed position airflow is prevented by the lid structure from flowing through the first airflow opening and therefore in the mounted state into the interior of the building. In some preferred embodiments, the lid structure is further configured to be positioned