STATIONARY INFRARED RADIATOR

Abstract

A stationary infrared radiator which is to be operated in a decentralized manner for heating buildings, including a reflector and at least two different components which emit IR radiation for heating, the reflector having a longitudinal axis (L) and a transverse axis (Q), which runs at right angles to the longitudinal axis (L) and parallel to the reflector, and a reflector surface. The first component is designed as a bright radiator or as a dark radiator and has a connection for supplying fuel gas. The second component is designed as an electrical resistance heater having at least one heating element. The aim is to control the temperature more precisely and simultaneously to produce the infrared radiator more simply. The first component and the second component are respectively disposed offset from one another in a direction of the transverse axis (Q) and in a direction at right angles to both axes (L, Q) in front of the reflector surface.

Claims

1. A stationary infrared radiator which is to operate in a decentralized manner for heating buildings, comprising: a reflector and at least two different components which emit IR radiation for heating, wherein b) the reflector has a longitudinal axis (L) and a transverse axis (Q) which runs at right angles to the longitudinal axis (L) and parallel to the reflector, and a reflector surface, c) the first component is designed as a light radiator or as a dark radiator and has a connection for supplying fuel gas, d) the second component is designed as an electric resistance heater having at least one heating element, wherein the first component and the second component are arranged in front of the reflector surface offset from one another in a direction of the transverse axis (Q) and/or the first component and the second component are arranged in front of the reflector surface offset from one another in a direction perpendicular to the longitudinal axis (L) and/or in a direction perpendicular to the transverse axis (Q).

2. The infrared radiator according to claim 1, wherein the first and second components are attached to the infrared radiator structurally separated or independently from one another.

3. The infrared radiator according to claim 1, wherein a separate tube reflector is provided between the reflector and the first or second component, or a separate tube reflector is provided between the reflector and the first or second component wherein insulation is provided between the reflector and the tube reflector.

4. The infrared radiator according to claim 1, wherein insulation is provided between the heating element and the reflector, and/or the heating element is mounted on the reflector.

5. The infrared radiator according to claim 1, wherein the first component is designed as a dark radiator, has a burner for fuel, and has at least one exhaust gas pipe coupled to the burner and designed as a radiant tube.

6. The infrared radiator according to claim 5, wherein a suction fan is arranged at the end of the exhaust gas pipe so that the exhaust gas pipe connects the burner to the suction fan.

7. The infrared radiator according to one of preceding claim 1, wherein the exhaust gas pipe has at least one linearly-extending section (A1) or at least two linearly-extending sections (A1, A2) coupled via a connecting tube deflecting the exhaust gas flow, wherein the linearly-extending sections are arranged on the reflector parallel to the longitudinal axis (L).

8. The infrared radiator according to claim 1, wherein the first component is designed as a light radiator, has at least one incandescent body, and has a connection for supplying fuel gas to the incandescent body.

9. The infrared radiator according to claim 1, wherein the infrared radiator has an electrical connection which is provided to supply and/or control all components.

10. The infrared radiator according to claim 1, wherein the reflector is placed on at least two bulkheads arranged parallel to the transverse axis (Q), wherein the bulkheads have attachment points for suspending the infrared radiator.

11. The infrared radiator according to claim 1, wherein at least one electric ceiling light with a light source is provided as a working light, connecting to the reflector surface in at least one direction of one of the axes (L, Q) or connecting to the reflector in at least one direction of one of the axes (L, Q).

12. The infrared radiator according to claim 1, wherein the connection is designed for three-phase alternating current and the same number of heating elements and/or light sources are connected to each phase of the connection.

13. The infrared radiator according to ene of the preceding claim 1, wherein a common control unit is provided to control the first and second components and the first and second components are selectively controllable independently from one another or simultaneously with one another.

14. A system comprising multiple infrared radiators according to claim 1, and lines for fuel and electrical cable for supplying the infrared radiator, and a ceiling device for attaching the infrared radiator and for attaching the lines and the cable.

15. A method for operating an infrared radiator according to claim 1, wherein the radiant tube is positioned in such a way that it absorbs radiation energy from the electric heating element through absorption, and the mass inertia of the radiant tube is used for equalizing the temporal radiation profile of the infrared radiator in the case of pulse width modulation of the electric heating element.

16. The infrared radiator according to claim 2, wherein a separate tube reflector is provided between the reflector and the first or second component, or a separate tube reflector is provided between the reflector and the first or second component wherein insulation is provided between the reflector and the tube reflector; wherein insulation is provided between the heating element and the reflector, and/or the heating element is mounted on the reflector; wherein the first component is designed as a dark radiator, has a burner for fuel, and has at least one exhaust gas pipe coupled to the burner and designed as a radiant tube; and wherein a suction fan is arranged at the end of the exhaust gas pipe so that the exhaust gas pipe connects the burner to the suction fan.

17. The infrared radiator according to claim 16, wherein the exhaust gas pipe has at least one linearly-extending section (A1) or at least two linearly-extending sections (A1, A2) coupled via a connecting tube deflecting the exhaust gas flow, wherein the linearly-extending sections are arranged on the reflector parallel to the longitudinal axis (L); wherein the first component is designed as a light radiator, has at least one incandescent body, and has a connection for supplying fuel gas to the incandescent body; wherein the infrared radiator has an electrical connection which is provided to supply and/or control all components; and wherein the reflector is placed on at least two bulkheads arranged parallel to the transverse axis (Q), wherein the bulkheads have bulkheads arranged parallel to the transverse axis (Q), wherein the bulkheads have attachment points for suspending the infrared radiator.

18. The infrared radiator according to claim 17, wherein at least one electric ceiling light with a light source is provided as a working light, connecting to the reflector surface in at least one direction of one of the axes (L, Q) or connecting to the reflector in at least one direction of one of the axes (L, Q); wherein the connection is designed for three-phase alternating current and the same number of heating elements and/or light sources are connected to each phase of the connection and wherein a common control unit is provided to control the first and second components and the first and second components are selectively controllable independently from one another or simultaneously with one another.

19. A system comprising multiple infrared radiators according to claim 18, and lines for fuel and electrical cable for supplying the infrared radiator, and a ceiling device for attaching the infrared radiator and for attaching the lines and the cable.

20. A method for operating an infrared radiator according to claim 18, wherein the radiant tube is positioned in such a way that it absorbs radiation energy from the electric heating element through absorption, and the mass inertia of the radiant tube is used for equalizing the temporal radiation profile of the infrared radiator in the case of pulse width modulation of the electric heating element.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Further advantages and details of the invention are explained in the patent claims and in the description and depicted in the figures. As shown in:

[0025] FIG. 1 is a sectional view perpendicular to the longitudinal axis of an infrared radiator having an electric heating element made from metal and a dark radiator operated with fuel gas;

[0026] FIG. 1a is an electric heating element with a sheath made from metal symmetrically encircling the heating spiral;

[0027] FIG. 2 is a sectional view perpendicular to the longitudinal axis of an infrared radiator having an electric heating element made from ceramic and a dark radiator operated with fuel gas;

[0028] FIG. 3 is a sectional view of an infrared radiator having an electric heating element made from metal and an electric heating element made from ceramic and a dark radiator to be operated with fuel gas;

[0029] FIG. 4 is a sectional view of an infrared radiator through a bulkhead;

[0030] FIG. 5 is a view from below of an infrared radiator according to FIG. 1;

[0031] FIG. 6 is a view from below of an infrared radiator according to FIG. 2;

[0032] FIG. 7 is a sectional view in the direction of the longitudinal axis of an infrared radiator according to FIG. 6;

[0033] FIG. 8 is a schematic diagram of an infrared radiator in a view from below.

DETAILED DESCRIPTION OF THE INVENTION

[0034] For reasons of clarity, the respectively identical components depicted in the following figures are not consistently numbered. The respective reference numeral of a certain component may be determined from the respective first figure of a certain view. These are essentially FIGS. 1, 5, and 7.

[0035] Numerous details of an infrared radiator 1 are depicted in a sectional view in FIG. 1. The central design component is an air-gap insulated reflector housing, which is formed from a trapezoidal reflector 2 having an inner reflector surface 20 and an outer wall 23 spaced apart by an air gap 10. Reflector 2 and outer wall 23 are connected to one another via webs 11.

[0036] Reflector 2 forms a hood 26, closed at the top, in which multiple components 30, 40 are arranged to generate heat in the form of infrared radiation. Air gap 10 is accessible via holes 29 in reflector 2, so that air may be extracted from hood 26 via air gap 10 and supplied to a burner 3 (FIG. 7). Reflector 2 lies on a bulkhead 25, depicted in FIG. 4 in cross section, which has tabs 27 for suspension. A housing 24, which functions to accommodate the technology and, as depicted in FIGS. 5-7, may be designed as a lighting housing 5 for accommodating a ceiling light 50, is connected on both sides, respectively at the ends of reflector 2.

[0037] In all exemplary embodiments, a component for heating, designed as radiant tube 30, is identically positioned underneath reflector 2 for heating. Radiant tube 30 functions to supply and combust fuel gas and has two sections A1 and A2 (FIG. 8) extending parallel in the direction of longitudinal axis L. An additional tube reflector 21, which reflects the infrared radiation more precisely and also more focused than reflector surface 20, is provided between radiant tube 30 and reflector surface 20 for each of the two radiant tubes 30. Insulation 6 is incorporated between tube reflector 21 and reflector 2.

[0038] A second component for heating is provided in the form of an electric resistance heater 4. This comprises three heating elements 40 extending in the direction of longitudinal axis L, which have a heating spiral 41 with a metallic sheath 42, depicted in greater detail in FIG. 1a. An additional tube reflector 22, which reflects the infrared rays more precisely and also more focused than reflector surface 20, is also provided here in front of reflector surface 20 and above heating element 40. The efficiency may also be increased here by additional insulation 6.

[0039] Electric resistance heater 4 is arranged centered and above the two sections of radiant tube 30. Electric resistance heater 4 is thereby likewise offset in the direction of transverse axis Q with respect to radiant tube 30 as well as offset above in the vertical direction perpendicular to transverse axis Q. Due to this offset, radiant tube 30 lies in the radiation sector of heating element 40, which is depicted with dashed lines on the left side for a heating element 40 by way of example. This always creates a radiation shadow, regardless of whether radiant tube 30 is colder or warmer than heating element 40.

[0040] According to FIG. 2 and as an alternative to heating elements 40 made from metal, heating elements 40 are provided with a sheath 42 made from ceramic, in which heating spiral 41 is embedded. Due to the larger surface of ceramic heating element 40, in contrast to heating element 40 made from metal, insulation 60 is incorporated between ceramic heating element 40 and tube reflector 22. A radiation shadow is also created by ceramic heating element 40, which is depicted by way of example for the left section of radiant tube 30.

[0041] A combination of metallic and ceramic heating elements 40 in conjunction with a dark radiator is depicted in FIG. 3. In this exemplary embodiment, ceramic heating elements 40 are positioned laterally on the flanks of reflector 2.

[0042] According to all depicted exemplary embodiments and regardless of the selection of the material for electric resistance heater 4, an offset to radiant tube 30 is provided, which according to the invention enables a simple power adjustment using pulse width modulation of the electric heating elements together with an independent assembly.

[0043] As is clear in FIG. 4, two recesses 28 for mounting radiant tube 30 are provided in bulkhead 25 together with three recesses 28 for three heating elements 40 made from metal.

[0044] According to the view from below according to FIG. 5, the exemplary embodiment according to FIG. 1 is depicted with heating elements 40 made of metal, which extend symmetrically centered to two straight sections A1 and A2 of radiant tube 30. Two sections A1 and A2 of radiant tube 30 are flow technically connected to one another via a connecting tube 32 at their end opposite burner 3. The two exemplary embodiments according to FIGS. 5 and 6 are structurally identical, except for the type of heating elements 40, and are equipped with ceiling lights 50. For this purpose, a lighting housing 5, by means of which reflector 2 is increased in length, is connected on both sides to reflector 2 in the direction of longitudinal axis L. Lighting housing 5 terminates, as is indicated in FIG. 7, with a light permeable cover 52 facing downward. A light source 51 is provided in lighting housing 5 behind cover 52 as a working light with a luminous flux of at least 5,000 lumens and up to 150,000 lumens.

[0045] In the exemplary embodiment according to FIG. 7, housing 5 functions simultaneously to accommodate burner 3, suction fan 31, and flame pipe 33 and as the lighting housing. It is clear in the sectional view that this technology is accommodated in left lighting housing 5. The flame is introduced into radiant tube 30 via flame pipe 33 connecting to burner 3. With the aid of suction fan 31, the flame and the exhaust gas are suctioned out of radiant tube 30, which likewise functions as an exhaust gas pipe. Light source 51 and cover 52 are provided in lighting housing 5 underneath the technology. The convection of the warm air out of hood 26 is curbed by the extension reflector 2 in the direction of longitudinal axis L on both sides. This is indicated by dashed arrows, which show that the warm air, which exits downward from hood 26, may not flow upward due to the two lighting housings 5. It is simultaneously possible to extract the warm air, which is generated by light source 51 and which circulates in lighting housing 5 as indicated by a dashed arrow, and supply it to the burner as combustion air. This is achieved by air gap 10 between reflector 2 and outer wall 23, which functions as an air duct. The flow for the extracted air in the air duct is graphically indicated with arrows in FIGS. 1 and 5 and also in FIG. 7. Aside from the warm air from lighting housing 5, the warm air exiting laterally from hood 26 is also extracted via holes 29 and supplied to burner 3 via air duct 10.

[0046] Additional exemplary embodiments are sketched in FIG. 8, in which reflector 2 is enlarged by variously arranged and dimensioned lighting housings 5 and the convection is curbed by these means. One first possibility is to arrange further lighting housings 5 on one side in the direction of longitudinal axis L or, as indicated with dashed lines, on both sides parallel to longitudinal axis L, such that reflector 2 is also increased in its width, that is, in the direction of transverse axis Q. In addition, lighting housing 5 might also be designed as a module 54 and attached to or plugged on to already present housing 24 or to a first lighting housing 5. The electrical supply for controlling and for light source 51 is provided during the attachment to or plugging on to by corresponding contacts (not depicted in greater detail) between the modules and lighting housing 5 or housing 24. A further possibility provides for arranging reflector 2 and the technology in a common housing 24 and also for mounting both ceiling lights 50, which are provided on both sides in the direction of longitudinal axis L, in this common housing 24.

LIST OF REFERENCE NUMERALS

[0047] 1 Infrared radiator [0048] 10 Air gap [0049] 11 Webs [0050] 2 Reflector [0051] 20 Reflector surface [0052] 21 Tube reflector [0053] 22 Tube reflector [0054] 23 Outer wall [0055] 24 Housing [0056] 25 Bulkhead [0057] 26 Hood [0058] 27 Tabs [0059] 28 Recesses [0060] 29 Holes [0061] 3 Burner [0062] 30 Component/Radiant tube/Exhaust gas pipe [0063] 31 Suction fan [0064] 32 Connecting tube [0065] 33 Flame pipe [0066] 4 Electric resistance heater [0067] 40 Heating element [0068] 41 Heating spiral [0069] 42 Sheath [0070] 5 Lighting housing [0071] 50 Ceiling light [0072] 51 Light source [0073] 52 Cover [0074] 53 - [0075] 54 Module [0076] 6 Insulation [0077] 60 Insulation [0078] A1 Section [0079] A2 Section [0080] L Longitudinal axis [0081] Q Transverse axis