Dehumidification system for the interior of a building

Abstract

Dehumidification system for an interior space (105) of a building (100) enclosed by a floor (101), a roof (102) and a side wall (103) extending between them, with a component (3) releasing moisture into the air in the interior space, characterized by an air humidity measuring device (109) arranged in a roof-adjacent area of ​​the interior space (105) and an air conveying device (112) which is connected on the intake side to an exhaust air duct (111) having an air inlet (110) arranged in the roof-adjacent area, and on the discharge side to an exhaust air duct (114) having an air outlet (115) arranged outside the building (100) and whose air conveying capacity is controlled depending on the measured value of the measuring device (109).

Description

[0001] The invention relates to a dehumidification system for an interior space of a building enclosed by a floor, a roof and a side wall extending between them, with a component that releases moisture into the air in the interior space.

[0002] Components made of hydraulically setting materials, such as concrete or screed, are laid in a soft and malleable state after the addition of water. This fresh mixture requires a specific setting time until it reaches a sufficient degree of hardness for further processing or load-bearing capacity. For screed constructions with underfloor heating, heating protocols are required in the construction industry. These protocols include a functional heating phase to verify the heating system's functionality and a final heating phase to ensure the screed is ready for covering. During its setting time, the hydraulically setting material releases water into its surroundings in the form of humidity. This humidity can have detrimental effects in building interiors, such as mold growth and structural damage, including swelling of windows or doors and flaking of plaster.

[0003] The invention is based on the objective of creating a dehumidification system suitable for reducing or avoiding these harmful effects.

[0004] According to the invention, this problem is solved with a dehumidification system of the type mentioned at the outset, which is characterized by an air humidity measuring device arranged in a roof-adjacent area of ​​the interior and an air conveying device which is connected on the intake side to an exhaust air duct having an air inlet arranged in the roof-adjacent area, and on the discharge side to an exhaust air duct having an air outlet arranged outside the building and whose air conveying capacity is controlled depending on the measured value of the measuring device.

[0005] Due to the heat of hydration released during the setting process, or due to heating carried out to accelerate the setting process, the air laden with moisture released by the component rises upwards into the area of ​​the interior near the roof. According to the invention, a humidity measuring device located there detects a measured value that characterizes the humidity. Depending on the detected value, the air delivery rate of the air delivery device is controlled. This device draws in the moisture-laden air at the air inlet of its exhaust duct located in the area near the roof and discharges it into the environment at its air outlet located outside the building. Such an air delivery device can, for example, include a blower, in particular a radial blower, which effects the delivery.In this particular case, the air flow rate can be controlled by controlling the drive motor, which is preferably an electric motor. This design according to the invention ensures, in particular, that only as much air is extracted as is necessary to prevent mold growth and structural damage, while simultaneously avoiding excessive cooling of the interior, which would result in an undesirable extension of the setting time.

[0006] A wide range of applications exists for an embodiment in which the moisture-releasing component is a hydraulically setting material incorporated into the building and in a moisture-releasing setting state. Components made of or containing hydraulically setting materials are widely used in building construction. Effective dehumidification supports the goal of minimizing construction time.

[0007] In particular, the material in question is a screed laid within the building. Often, the pipes of an underfloor heating system are embedded in the screed, enabling heating and thus faster drying of the screed. Before the screed has reached a sufficient set state, it cannot be subjected to further processing or load-bearing capacity. Therefore, for the progress of work, such as the installation of a floor covering on the screed, the heating process and the associated need for dehumidification are of great importance.

[0008] Therefore, a device for heating the component is generally provided.

[0009] To optimize the service life of the dehumidification system according to the invention, a detection unit serving to detect a value of a measurement variable sensitive to the setting state, which is designed to contact the material after its installation, and an information transmission unit serving to transfer the detected value to a data collection unit are provided according to a further aspect of the invention.

[0010] Contacting the material enables the necessary interaction between the sensing unit and the material being laid, allowing for the acquisition of the value of the parameter sensitive to the setting state. For example, this contact is achieved by inserting a sleeve or bore into the material before it has hardened, once the material has reached sufficient strength. The sensing unit, with its sensor used for measurement, is then inserted into this bore or sleeve, enabling the sensor to detect the value of the parameter sensitive to the setting state. Alternatively, the sensing unit can be contacted with the material in any other way, such as by positive locking and / or force-fit embedding, as long as the necessary interaction between the sensing unit and the material for measurement acquisition can occur.In particular, the detection unit could be designed to contact only one surface of the laid material and measure the moisture content, for example, using a capacitive measuring method. The measurement can be continuous or discrete. The data collection unit can store the measured values, allowing, in particular, the documentation of the setting process over time.

[0011] Preferably, the system is characterized by a separating unit designed to separate the detection unit from the laid material, which has an interior designed to releasably receive the detection unit. The separating unit protects the detection unit from direct contact with the material. It can be designed such that it remains in the material after the setting state has been checked, while the detection unit housed within the separating unit is removed for reuse.

[0012] In an advantageous embodiment, the separating unit is designed as a sleeve having a longitudinal axis and a lateral surface surrounding the longitudinal axis at a distance. In particular, the sleeve is cylindrical and can, for example, be inserted into a bore provided for this purpose in the material, for example by pressing or driving it in, so that it is held securely in the bore by its lateral surface.

[0013] In this context, it is further provided that the sleeve is open at one of its axial ends and closed at the other. In particular, the open axial end can have an outer radial flange with which the sleeve, inserted into the bore, is supported against the surface of the material. The closed axial end points towards the inner axial end of the bore. Thus, the sleeve forms a receiving space for the detection unit that is freely accessible from its open axial end, while this receiving space is closed at the other axial end, thereby protecting the detection unit on all sides within the material.

[0014] In an advantageous embodiment, the system is designed such that the sensing unit comprises a sensor that delivers an electrical measurement signal corresponding to the measured quantity and a signal processing unit for generating measurement data corresponding to the electrical measurement signal delivered by the sensor. The sensor's measurement signal is usually an analog electrical signal. Advantageously, this signal is converted by the signal processing unit into a digital measurement data signal suitable for transmission to the data acquisition unit by means of an analog-to-digital converter.

[0015] Furthermore, it is advantageous that the information transmission unit for transmitting the processed measurement data is designed for a WLAN network. The WLAN network can, for example, be implemented using mobile routers located at the site where the system is used to check the setting state, particularly on a construction site.

[0016] The parameters sensitive to the setting state are primarily moisture and / or temperature. The material to be tested is, in particular, a laid screed or a concrete mixture formed in a ready-mix concrete mold or concrete formwork.

[0017] The invention will now be explained by way of example with reference to the drawing. This drawing shows: Fig. 1 a schematic view of an embodiment of the dehumidification system according to the invention, and Fig. 2. a section of a system for recording the setting state of a moisture-releasing component in Fig. 1.

[0018] A in Fig. The building 100 shown in Figure 1 has a floor 101, a roof 102, a side wall 103 extending between them, and an intermediate floor 104. The intermediate floor 104 divides the interior space 105 of the building 100, enclosed by the floor 101, the roof 102, and the side wall 103, into two vertically stacked sub-spaces, which are connected to each other by means of an air supply, for example, through a stairwell opening (not shown). A screed layer 3 is laid on both the floor 101 and the intermediate floor 104, in which a floor heating pipe 106 is embedded. The floor heating pipe 106 is part of a circuit of a heat transfer medium, which is supplied with heat energy by a heating energy source 107, shown schematically.

[0019] The screed layer 3 is in a setting state, in which it is not yet fully hardened and still releases moisture into the air in the interior space 105. The moisture-laden warm air rises, as indicated by arrows 108, to the area of ​​the interior space 105 near the roof. A humidity measuring device 109 is located there, which provides a measured value characteristic of the humidity. In the area near the roof, an air inlet 110 of an exhaust air duct 111 of an air conveying device 112 is located. This exhaust air duct 111 is connected on the intake side to a blower 113, through which the intake air is conveyed via an exhaust air duct 114, which is connected on the discharge side to the blower 113, to its air outlet 115 located outside the building 100.

[0020] The air flow rate of the air handling unit 112 is controlled based on the reading from the measuring device 109. This control can be discontinuous, for example, by switching the air handling unit 112 on when a predetermined humidity level is exceeded and switching it off when it falls below that level. However, continuous control is preferable, ensuring that the humidity level is consistently maintained close to a level at which mold growth is prevented.

[0021] In addition, measures have been taken to monitor the moisture content of screed layer 3 and thus its setting state. This is in Fig. 1 is indicated by a measuring system 116 symbolically represented there. This could, for example, be a measuring system having a sensor contacting the surface 4 of the screed layer 3, which records the moisture using a capacitive or resistive measuring method and transmits moisture measurement data to a WLAN network.

[0022] Alternatively, this measuring system is in the Fig. The example shown in Figure 2 is achieved by placing a thermal insulation layer 2 on a load-bearing concrete slab 1. A screed layer 3 is laid on this thermal insulation layer 2. A borehole 5 is drilled into this screed layer 3 from its free upper surface 4.

[0023] A separating unit 6 is force-fitted into the bore 5. This separating unit 6 is designed in the form of a cylindrical sleeve whose longitudinal axis extends transversely to the surface 4 of the screed layer 3. This sleeve has a cylindrical lateral surface 7 that extends radially from the longitudinal axis. At its inner end with respect to the bore 5, the sleeve 6 is closed by a radial base 8 connected to the inner edge of the lateral surface 7. The opposite end opens openly onto the surface 4 of the screed layer 3 and has an outer radial flange 9 that bears against the surface 4.

[0024] Inside the sleeve 6 is a detection unit 10, which includes a sensor and a signal processing unit for the electrical measurement signal supplied by the sensor. The sensor is, for example, a humidity sensor or a temperature sensor.

[0025] In addition to the sleeve 6, an information transmission unit 11 is positioned on surface 4. This unit is connected to the output of the detection unit 10 via a connecting cable 12. The information transmission unit 11 receives the measurement data from the detection unit 10 and transmits it to a WLAN network (not shown) for further evaluation to check the setting state of the screed layer 3. Depending on the result of this check, a decision can be made as to whether the dehumidification operation should be continued or terminated. List of reference symbols: 1 Raw concrete ceiling 2 Thermal insulation layer 3 screed layers 4 Surface 5 holes 6 Separating unit, sleeve 7 Surface area 8 Floor 9 flange 10 recording units 11 Information transmission unit 12 Connection cable 100 buildings 101 Floor 102 Roof 103 Side wall 104 Intermediate ceiling 105 Interior 106 Underfloor heating pipe 107 Heating energy source 108 arrows 109 Humidity measuring device 110 Air intake 111 Exhaust duct 112 Air conveying device 113 blowers 114 Exhaust air duct 115 Air outlet 116 Measuring system

Claims

[1] Dehumidification system for an interior space (105) of a building (100) enclosed by a floor (101), a roof (102) and a side wall (103) extending between them, with a component (3) releasing moisture into the air in the interior space, characterized by a humidity measuring device (109) arranged in a roof-adjacent area of ​​the interior space (105) and an air conveying device (112) which is connected on the intake side to an exhaust air duct (111) which has an air inlet (110) arranged in the roof-adjacent area, and on the discharge side to an exhaust air duct (114) which has an air outlet (115) arranged outside the building (100) and whose air conveying capacity is controlled depending on the measured value of the measuring device (109). [2] Dehumidification system according to claim 1, characterized by, that the moisture-releasing component (3) is a hydraulically setting material processed in the building (100) in a moisture-releasing setting state. [3] Dehumidification system according to claim 2, characterized by , that the material is a screed mass (3) laid in the building (100). [4] Dehumidification system according to one of claims 1 to 3, characterized by a device used to heat the component (107). [5] Dehumidification system according to claims 3 and 4, characterized by , that the heating device (107) has a floor heating pipe (106) laid in the screed mass (3). [6] Dehumidification system according to one of claims 3 to 5, characterized bya detection unit (10) serving to detect a value of a measurement quantity sensitive to the setting state, which is designed to contact the material (3) after its placement, and an information transmission unit (11) serving to transfer the detected value to a data collection unit. [7] System according to claim 6, characterized by , that the detection unit (10) is designed for contacting the outer surface (4) of the component (3) to form a value of the moisture, in particular according to a capacitive or resistive measuring principle. [8] System according to claim 6, characterized by a separation unit (6) designed to separate the detection unit (10) from the laid material (3), which has an interior designed to allow the detection unit (10) to be releasably received. [9] System according to claim 8, characterized by, that the separating unit (6) is designed in the form of a sleeve having a longitudinal axis with a lateral surface (7) surrounding the longitudinal axis at a distance. [10] System according to claim 9, characterized by , that the sleeve (6) is open at one of its axial ends and closed at its other axial end (8). [11] System according to any one of claims 6 to 10, characterized by , that the detection unit (10) has a sensor which provides an electrical measurement signal corresponding to the measured quantity and a signal processing unit for generating measurement data corresponding to the electrical measurement signal supplied by the sensor. [12] System according to claim 11, characterized by , that the information transmission unit (11) is designed to transmit the processed measurement data in a WLAN network. [13] System according to any one of claims 6 to 12, characterized bythat the measured variable is humidity and / or temperature.

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