Search

EP-4589203-B1 - AERATION AND DEAERATION SYSTEM FOR BUILDINGS

EP4589203B1EP 4589203 B1EP4589203 B1EP 4589203B1EP-4589203-B1

Inventors

  • Saxalber, Martin

Dates

Publication Date
20260513
Application Date
20250103

Claims (7)

  1. A ventilation device (100) comprising a housing (109), wherein the ventilation device is adapted to be inserted into an opening passing through the wall of a building, and wherein the housing (109) has an opening on each side of the wall and the housing (109) forms at least one hollow body, and a series of channels (108) are arranged within the hollow body, which are suitable for conducting air, and wherein the housing (109) forms a wall of the hollow body or the hollow bodies, characterised in that the hollow body is formed by the housing and two covers (101) which close the two openings of the housing (109), and that the channels comprise an at least partially thermally conductive wall between the two openings, and the channels (108) are at least partially surrounded by a PCM material (phase change material) housed within the hollow body, and wherein the housing (109) is formed at least partially from a deformable plastic material which enables the volume change of the PCM (phase change material) to be absorbed, and the covers have attachments (102) or connections (102) inside the hollow body to which the channels (108) are attached.
  2. Ventilation device (100) according to claim 1, characterised in that the housing (109) is at least partially surrounded by a foam material (111) capable of accommodating the volume change of the housing (109).
  3. Ventilation device (100) according to claim 1 or 2, characterised in that the housing (109) forms at least one wall of the hollow body.
  4. Ventilation device (100) according to one of the preceding claims, characterised in that the lids (101) have inlets (105) for introducing the PCM into the hollow body.
  5. Ventilation device (100) according to one of the preceding claims, characterised in that a fan is arranged at the inlets of the channels, which forces an air flow through the channels.
  6. Ventilation device (100) according to one of the preceding claims, characterised in that the channels (108) are made of aluminium or copper.
  7. Ventilation device (100) according to one of claims 2 to 5, characterised in that the foam (111) is vulcanised.

Description

The present invention relates to a device for the ventilation of buildings. In new buildings and/or after a renovation, ventilation systems are frequently used to enable air exchange, prevent moisture and mold growth, and/or ventilate interior spaces without, for example, having to open windows. The problem that arises is the heat loss in winter and the heating in summer due to outside heat. Therefore, ventilation units with heat recovery are frequently used. State of the art The WO 2016/034561A1 This describes a latent heat storage system for encapsulating phase change materials (PCMs) and the manufacture of containers for this purpose. In addition to the cylindrical shape, a tubular container is also described. The filling volume is specified as up to... The volume is specified as 500 ml, the wall thickness as 90 to 300 µm and the preferred temperature stability as 600°C. The DE 20 2005 015 393 U1 describes a plate-shaped metal casing of PCM, in which two overlapping sheets are joined or folded around each other at the edges. The DE 102018000673 This describes the design of centralized or decentralized PCM ventilation systems with latent heat storage, in which a composite body made of organic phase change material (PCM-V) is encapsulated in a metal housing. Specific properties must be met, comprising requirements for the PCM-V used and for the encapsulation of the PCM-V. The metallic encapsulation of the housing must meet the requirements for the thermal insulation of the encapsulated phase change material (PCM) as well as the criteria for reducing the flammability, flame spread, temperature development, flue gas density, and combustion droplets of the PCM-V. The DE 202022100099 describes a ventilation system for a building , wherein the ventilation device has a ventilation duct which connects a first and a second ventilation opening of the ventilation device, wherein the ventilation duct has a number of sections which are successively traversed by an airflow flowing through the ventilation duct, wherein the sections each have a heat storage element which is thermally coupled to the respective section of the ventilation duct through which the airflow flows, and wherein in at least one of the sections the heat storage element is designed as a combination of a respective phase conversion material and a respective heat exchanger, that the respective heat exchanger encloses the respective phase change material and that the respective phase transition material changes its phase state at a given transition temperature. In this case, the heat exchanger encloses the phase change material; therefore, cavities are created. needed to expand the to incorporate phase change material. Furthermore, the PCM is only in contact with the heat exchanger on its outer surface, which limits the exchange area. None of the devices described so far enable rapid and constant heat absorption and heat transfer to the air flowing through the device. A ventilation device is proposed that solves these problems. The ventilation device consists of a housing, preferably tubular. The ventilation device is designed to be installed in a building wall and penetrates the wall and the housing with an opening on each side of the wall. Inside the housing are at least one hollow body and a series of channels arranged to conduct air surrounded by the hollow body(s), the housing advantageously forming a wall of the hollow body(s), and the channels having at least a partially heat-conducting wall between the two openings. The channels are at least partially surrounded by a PCM (phase change material) material contained within the hollow body, and the housing is at least partially formed from a deformable plastic material capable of accommodating the volume change of the PCM. Advantageously, the housing is at least partially surrounded by a plastic foam material capable of accommodating the volume change of the housing. The ventilation device advantageously comprises a controllable fan for generating an air exchange flow through the channels and/or two fans for generating an air exchange flow through the channels. The alternating current is determined by the heat absorption capacity of the PCM in thermal contact with the air through the channels. According to the invention, the ventilation device consists of two covers which, together with the housing, form a hollow body in which the channels are arranged. Further purposes, features, advantages, and applications will become apparent from the following description of an exemplary embodiment and the accompanying drawings. Accordingly, all features described and/or illustrated in the figures, whether considered individually or in any combination, constitute the subject matter disclosed herein, regardless of their grouping in the claims or their dependencies. In the drawing: Figure 1a shows a section through a lid for a ventilation device according to the invention, Figure 1b shows a front view of a cov