Patent Application
20240240800
The present invention relates to a ceiling radiator.
Generic ceiling radiators are used for heating or cooling rooms. In this case, several rod-shaped ceiling radiators are preferably suspended from the ceiling in order to heat the room by means of emitted heat radiation or by means of absorbed heat radiation.
From DE 298 04 240 U1, a ceiling radiator is known, radiant panels being connected to each other by means of connection elements in such a manner that a regular multangular/polygonal cross-sectional shape is formed. In this case, all corners of the cross-sectional shape are preferably uniformly disposed on a circle. Flow tubes are disposed in the connection elements at the corners of the cross-sectional shape or in the hollow space in the center of the cross-sectional shape in order to conduct a heating or cooling fluid. The individual ceiling radiators are rotatably mounted on the ceiling by means of a support, no preferred orientation with regard to the heat radiation being mentioned.
In DE 10 2011 053 206 A1, a ceiling radiator is disclosed which is also suitable for heating or cooling rooms, the ceiling radiator realizing a collection system for a condensate. A cross-shaped cross-sectional profile is disclosed which has four cross tips having converging radiant panels such that a condensate flows to the cross tips and can be collected in a collecting channel. In this case, the suspension is realized in such a manner that one cross tip points in the direction of the floor in order to drain off liquid at this cross tip by means of a collecting channel.
Based on the aforementioned state of the art, the present invention is based on the object of proposing a ceiling radiator which can emit or absorb a greater amount of heat radiation energy in the floor direction compared to a ceiling radiator having the same external dimensions.
This object is attained by a ceiling radiator having the features disclosed herein. Advantageous embodiments are also disclosed herein and/or are the subject matter of the dependent claims.
The basic idea of the invention in its most general form provides that the ceiling radiator has a star-shaped cross-sectional shape with five or more star tips, wherein at least two converging radiant panels form a star tip, and that a suspension is disposed in such a manner and/or the cross-sectional shape, in particular the number of the star tips, is selected in such manner that, in the mounted state on a ceiling, the radiant panels realize a larger radiating surface in a floor direction than toward the ceiling.
In this case, the invention has found that, due to the design of the cross-sectional shape and/or orientation of the ceiling radiator according to the invention, in particular a work or living area, can be heated or cooled more effectively at the floor of the room. For example, a ceiling radiator with five star tips and a suspension at one of the star tips has a larger radiation surface in the floor direction than a cross-shaped ceiling radiator. During operation, in particular the floor area of the room can be cooled or heated more quickly.
Furthermore, the bending stiffness improves with additional tips or star tips such that the dead weight or the weight per unit of length of the additional star tip, for example compared to a cross-shaped ceiling radiator, can be compensated by reduced use of materials. Due to the improved heat transmission at the same dead weight, fewer ceiling radiators can be used to save energy, for example, or to enable the use of ceiling radiators for ceilings with load restrictions.
Advantageously, the at least one flow tube is disposed in the center of the star-shaped cross-sectional shape and connects the star tips to each other at the outer diameter.
The at least one flow tube in the center of the star is preferably a circular flow tube. Compared to a rectangular flow tube, circular fluid connections are easier to be attached.
Furthermore, in addition to the flow tube in the center of the star, a flow tube may be disposed within at least one star tip. Thereby, the flow rate of cooling or heating fluid can increase while the flow velocity remains the same or the emitted or absorbed radiant power can increase.
The star tips are preferably realized in such a manner that outer corners of several star tips are distributed on a first circle and inner corners at a joint of the several star tips with the at least one flow tube in the center of the star are distributed around the central point of the cross-sectional shape on a second circle and that the several star tips form isosceles triangles.
In a further development, the angle of the star tips at the outer corners is 16° to 38°, preferably 24°, and the outer diameter of the flow tube is 25% to 42%, preferably 38%, of the circle diameter around the outer corners.
Furthermore, the star tips can be disposed with the radiant panels in such a manner that a liquid is dischargeable in the floor direction. Thus, it can, for example, be prevented that a condensate collects at the inner corners of the star tips.
Preferably, the several star tips and/or the at least one flow tube is/are producible as an extruded profile, preferably made of aluminum. Thus, a surface which is seamless in a cross-sectional direction results and the ceiling radiator is manufactured in one piece, at least in a cross-sectional direction. Advantageously, therefore, the ceiling radiator has no weld seams in the cross-sectional direction. In the case of a connection of several profiles or components in the longitudinal direction and/or when end parts are attached, of course, seams, for example weld seams, can be produced. By means of a one-piece design in the cross-sectional direction, an effective production can be achieved which, in addition, can improve the heat transmission from the flow tube to the star tips.
Below, details and embodiments of the invention are explained with reference to merely schematic drawings.
In the figures:
In
During operation of ceiling radiator 01, a cooling or heating liquid can flow through flow tube 03 along the x-axis such that ceiling radiator 01 emits or absorbs heat radiation at star surfaces 15.
A suspension 08 from ceiling 16 is disposed at a star tip 02 such that the five star tips 02 realize a larger radiating surface 15 in a floor direction 10 than toward ceiling 16. In this case, especially radiant panels 04′ are acting with illustrated heat radiation 13 in floor direction 10 to, for example, heat or cool a work or living area at floor 11. Remaining radiant panels 04 in the direction of ceiling 16 act via reflections with less intensity than radiant panels 04′ on floor 11.
Alternatively, suspension 08 could be disposed on flow tube 03. However, in this case, radiating surface 15 in floor direction 10 would be reduced compared to a suspension 08 at one of star tips 02.
Flow tube 03 is preferably circular in shape such that, compared to angular flow tubes, it can easily be connected to fluid connections. In an alternative embodiment, flow tube 03 can also have a rectangular shape, for example with side surfaces corresponding to the number of star tips 02. It would also be possible that radiant panels 04 themselves form a star-shaped flow tube.
Furthermore, in addition to flow tube 03 in center M of star 01, a flow tube may be disposed within one of star tips 02. Thereby, the flow rate can be increased while the flow velocity remains the same or the emitted or absorbed radiant power can be increased.
Star tips 02 in
The triangles have a preferably same inner angle α between radiant panels 04. Preferably, angle α of star tips 02 at outer corners 05 is 16° to 38°, in the case at hand 24°. Furthermore, the outer diameter of the flow tube is 25% to 42%, in the case at hand 38%, of the circle diameter around outer corners 05.
An angle β is also preferably designed uniformly along the circumference, the combination of angles α and β increasing heat radiation 13 in floor direction 10.
Moreover, angles α and β are preferably realized in such a manner that liquid, for example condensate, does not collect at inner corners 06, but is dischargeable in floor direction 10.
In the case of a desired irregular realization of angles α or β, it is preferred that a surface 15 of radiant panels 04 which is as large as possible is inclined at an angle which is as obtuse as possible relative to floor direction 10, wherein the surfaces preferably do not overlap. For example, individual star tips 02 can be increased to avoid overlapping.
Preferably, several star tips 02 and/or the at least one flow tube 03 is/are producible as an extruded profile, preferably made of aluminum or plastic. In this way, the seamless cross-sectional shape illustrated in
Ceiling radiator 01 described thus far can be altered or modified in a variety of ways without departing from the idea of the invention. Thus, for example, a larger number of star tips 02 may be used or several ceiling radiators 01 having differently disposed star tips 02 can be used in order to focus the heat radiation on a specific area at floor 11 of room 14.
| Number | Date | Country | Kind |
|---|---|---|---|
| 21173863.8 | May 2021 | EP | regional |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2022/060299 | 4/19/2022 | WO |
