This publication discloses a filter unit connectable to a mobile communication device including a fan for generating an air flow inside the filter unit, electrodes covered with a photo catalytic material like TiO.sub.2 in the air flow, UV-LEDs illuminating the electrodes, and outlet for the air flow directed in direction of user of filter unit.

A heating panel includes a lower panel mounted on the floor and an upper panel serving as a cover of the lower panel. The lower panel includes: a plurality of first guides protruding upward from the bottom surface to guide installation of a heating hose; and a first air passage formed as a groove on the bottom surface and the surface of the first guide, and further includes a plurality of second guides protruding upward from the bottom surface, having the first air passage on the surface thereof, and disposed between the plurality of first guides to guide installation of the heating hose. The upper panel is coupled to the lower panel and includes: a second air passage formed on the bottom surface in a groove form; and a second fastening member coupled with the first fastening member.

A heating panel includes a lower panel mounted on the floor and an upper panel serving as a cover of the lower panel. The lower panel includes: a plurality of first guides protruding upward from the bottom surface to guide installation of a heating hose; and a first air passage formed as a groove on the bottom surface and the surface of the first guide, and further includes a plurality of second guides protruding upward from the bottom surface, having the first air passage on the surface thereof, and disposed between the plurality of first guides to guide installation of the heating hose. The upper panel is coupled to the lower panel and includes: a second air passage formed on the bottom surface in a groove form; and a second fastening member coupled with the first fastening member.

A radiant ceiling panel for air conditioning of a room, including a radiating surface on which a tube system for conducting a fluid, in particular water, along the radiating surface is fixed, preferably directly. The length of the radiating surface exceeds its width by a multiple. The tube system includes at least two portions fluidically connected in parallel, in particular arranged in parallel. The radiant ceiling panel has a fastening system, in particular a rope-like fastening system, for freely suspended fastening to a ceiling, or at least elements for interacting with said fastening system. The at least two portions are guided together and back apart again in an assembly region of the radiating surface.

A heating panel includes a lower panel mounted on the floor and an upper panel serving as a cover of the lower panel. The lower panel includes: a plurality of first guides protruding upward from the bottom surface to guide installation of a heating hose; and a first air passage formed as a groove on the bottom surface and the surface of the first guide, and further includes a plurality of second guides protruding upward from the bottom surface, having the first air passage on the surface thereof, and disposed between the plurality of first guides to guide installation of the heating hose. The upper panel is coupled to the lower panel and includes: a second air passage formed on the bottom surface in a groove form; and a second fastening member coupled with the first fastening member.

A heating panel includes a lower panel mounted on the floor and an upper panel serving as a cover of the lower panel. The lower panel includes: a plurality of first guides protruding upward from the bottom surface to guide installation of a heating hose; and a first air passage formed as a groove on the bottom surface and the surface of the first guide, and further includes a plurality of second guides protruding upward from the bottom surface, having the first air passage on the surface thereof, and disposed between the plurality of first guides to guide installation of the heating hose. The upper panel is coupled to the lower panel and includes: a second air passage formed on the bottom surface in a groove form; and a second fastening member coupled with the first fastening member.

A device for heating a room (2) in a building by means of underfloor heating, the floor comprising pipe loops (4) for circulation of a hot medium, preferably water. The floor has a subfloor (1) and an upper floor (8) at a mutual distance, so that an air-filled chamber (16) is formed between them. In the outer wall (3) of the room there are inlet openings (7) for fresh air, which by means of negative pressure ventilation in the room (2) flows into the chamber (16), over the pipe loops (4) to heat up, and out through outlet openings (9) in the upper floor (8). The heat absorbed from the pipe loops (4) goes partly up through the upper floor (8), partly out into the room (2) as heated air. The pipe loops (4) extend transversely of the direction of movement of the air from the inlet (7) to the outlet (9) and are partly cast in concrete on the bottom of the chamber (16).

Provided is a heating device for a hot water mat that can minimize noise by a check valve for controlling flow of liquid. The heating device for a hot water mat includes: a water tank having a tub for keeping liquid and a discharge hole formed through a side of a lower portion to discharge the liquid in the tub; a heating module connected to the discharge hole and heating liquid; a separator disposed in the water tank, dividing the tub in to a first compartment at a lower portion and a second compartment at an upper portion, and having a connection hole for connecting the first compartment and the second compartment to each other; and a check valve disposed in the first compartment and opening and closing the connection hole by moving up and down by buoyancy from the liquid in the first compartment.

Provided is a heating device for a hot water mat that can minimize noise by a check valve for controlling flow of liquid. The heating device for a hot water mat includes: a water tank having a tub for keeping liquid and a discharge hole formed through a side of a lower portion to discharge the liquid in the tub; a heating module connected to the discharge hole and heating liquid; a separator disposed in the water tank, dividing the tub in to a first compartment at a lower portion and a second compartment at an upper portion, and having a connection hole for connecting the first compartment and the second compartment to each other; and a check valve disposed in the first compartment and opening and closing the connection hole by moving up and down by buoyancy from the liquid in the first compartment.

The invention relates to a profiled section (10) for temperature-control of a room, said section having a receiving portion (20) for a piping system positioning aid (60), a sealing surface (15), formed at least at the side of the receiving portion (20), and at least one first support (30) for a sealing panel (200), the first support (30) being formed at the side of the receiving portion (20) and pointing in the opposite direction to the sealing surface (15). The invention also relates to a building element assembly (100) comprising a profiled section (10) of this type and to an associated use.