BRIGHT RADIATOR

Abstract

A bright radiator includes a burner, a fan and a radiant panel functioning as a radiating surface and having flame through-channels, wherein the burner is connected to a fuel gas supply, wherein the fan is designed to supply the burner with combustion air, wherein the burner is designed to bring about extensive glowing of the radiant panel, and wherein the fuel gas supply is connected to a hydrogen source as a fuel gas source.

Claims

1. Bright A bright radiator, having a burner (1, 5), a fan (3), and a radiant panel (12) that serves as a radiating surface and is provided with flame passage channels, wherein the burner (1, 5) is connected to a fuel gas supply, wherein the fan (3) is set up for supplying combustion air to the burner (1, 5), wherein the burner (1, 5) is set up for bringing about whole-area glowing of the radiant panel (12, 52), wherein the fuel gas supply is connected to a hydrogen source as the fuel gas source.

2. The bright radiator according to claim 1, wherein the hydrogen supply (2) and the fan (3) are configured and oriented in such a manner that the hydrogen flow and the combustion air flow are set at an angle relative to one another, wherein the angle is preferably less than or equal to 90 degrees and greater than or equal to 45 degrees.

3. The bright radiator according to claim 1, wherein a reflector (4) is provided, which encloses the radiating surface of the radiant panel (12, 52) and delimits a waste gas space, wherein a combustion air mixing space (39) precedes the burner (1, 5), which space is connected to a combustion air source and the waste gas space.

4. The bright radiator according to claim 3, wherein the waste gas space is connected to the combustion air mixing space (39) by way of an ejector (32, 36), wherein the driving medium of the ejector (32, 36) is combustion air introduced by means of the fan (3), and the medium drawn into the combustion air mixing space (39) is waste gas situated in the waste gas space.

5. The bright radiator according to claim 4, wherein a setting apparatus (35) is provided, by way of which the proportion of the combustion air volume stream to the waste gas volume of the ejector (32, 36) can be adjusted.

6. The bright radiator according to claim 3, wherein the combustion air mixing space (39) is arranged within the fan (3).

7. The bright radiator according to claim 1, wherein the hydrogen supply is passed over a distributor panel (53), in a whole-area manner, which panel is arranged parallel to and at a distance from the radiant panel (52) and delimits a fuel mixing chamber (51).

8. The bright radiator according to claim 7, wherein an air intake channel (54) that encloses the distributor panel (53) is provided, at least in certain regions, which channel is connected to the fan (3).

9. The bright radiator according to claim 8, wherein the air intake channel (54) is configured in such a manner that whole-area flow of combustion air over the distributor panel (53) is brought about.

10. The bright radiator according to claim 1, wherein an optical sensor is provided, which is set up for detecting at least one parameter of the flame produced by the burner (1).

11. The bright radiator according to claim 10, wherein the optical sensor is a UV sensor (43).

12. The bright radiator according to claim 11, wherein the optical sensor is directed at the radiant panel (12) so as to enclose a preferably obtuse angle with it.

13. The bright radiator according to claim 10, wherein a reflector (4) that encloses the radiant panel (12) at least in certain regions is provided, the reflector being provided with a window (42), wherein the optical sensor is oriented toward the radiant panel (12), from outside of the reflector (4), through the window (42).

14. The bright radiator according to claim 10, wherein the optical sensor is connected to a setting device connected to the fan (3), for interrupting and/or setting the combustion air supply, and/or wherein the optical sensor is connected to a setting device connected to the fuel gas supply, for interrupting and/or setting the hydrogen supply.

15. The bright radiator according to claim 14, wherein the setting device is connected to a control and regulation module, which is programmed for regulating the flame properties using reference parameters stored in memory, by means of changing the amounts of hydrogen and/or combustion air.

Description

[0020] FIG. 1 the schematic representation of a bright radiator;

[0021] FIG. 2 the schematic representation of a bright radiator in a further embodiment;

[0022] FIG. 3 the schematic representation of a bright radiator in a third embodiment, and

[0023] FIG. 4 the schematic representation of a bright radiator in a fourth embodiment, with distributor panel and radiant panel.

[0024] The bright radiator according to FIG. 1, chosen as an exemplary embodiment, comprises a burner 1, which is connected to a hydrogen supply 2 and a fan 3. A reflector 4 is provided, enclosing the burner 1.

[0025] The burner 1 comprises a fuel mixing chamber 11, which is delimited by a ceramic radiant panel 12. The ceramic radiant panel 12 is provided, in a known manner, with a perforated pattern that extends over the entire surface area, which pattern is formed by cylindrical flame passage channels that are configured to widen conically on the side of the radiant panel 12 that is directed outward. Lying opposite the radiant panel 12, a hydrogen supply 2 is arranged, orthogonal to it, which supply empties into the fuel mixing chamber 11. At a right angle to the hydrogen supply 2, a pressure line 31 empties into the fuel mixing chamber 11, which is connected to the fan 3.

[0026] On its suction side, the fan 3 is connected to an ejector 32, the drive connector of which is connected to a combustion air supply 33, and the suction connector of which is connected to a waste gas supply line 34, which is passed through the reflector. A recirculation orifice 35 is arranged in the waste gas supply line 34. The combustion air stream drawn in by the fan 3 through the combustion air supply 33 serves as a driving medium here, by means of which medium intake of part of the waste gas cushion 381 present within the reflector 4 is brought about through the recirculation orifice 35. The proportion of the waste gas stream in the combustion air stream can be adjusted by means of the recirculation orifice 35, and thereby, in turn, the oxygen content of the waste gas/combustion air stream mixture is determined. The remaining waste gas stream flows out of the reflector 4 into the ambient air. A combustion air mixing space 39 is integrated into the fan 3.

[0027] On the pressure side, a waste gas/combustion air mixture is supplied to the fuel mixing chamber 11 by means of the fan 3, which mixture is ignited, together with the hydrogen stream that is introduced by means of the hydrogen supply 2, after exiting through the radiant panel 12, by means of an/the ignition electrode 13 arranged on the burner 1, on the outside, ahead of the radiant panel 12, and thereby a flame carpet is produced on the outside, on the radiant panel 12. The combustion essentially takes place in the conically widened sections of the flame passage channels of the radiant panel 12, and thereby these are heated on the outer surface, until they glow bright red. The flame temperature can be regulated by means of the oxygen content of the waste gas/combustion air mixture, which content can be adjusted by way of the recirculation orifice 35.

[0028] In the exemplary embodiment according to FIG. 2, the burner 1 is configured in accordance with the previous exemplary embodiment and once again enclosed by a reflector 4. Lying opposite the radiant panel 12 of the burner 1, once again a hydrogen supply 2 is arranged orthogonal to the panel, which supply empties into the fuel mixing chamber 11. At a right angle to the hydrogen supply 2, a pressure line 31 empties into the mixing chamber, which is connected to the fan 3. In deviation from the exemplary embodiment described above, the fan 3 is connected, on the suction side, to a combustion air supply, wherein an ejector 36 is inserted in the pressure line 31, within the reflector 4, by means of which ejector a suction gap 37 that radially surrounds the pressure line 31 is formed. The section of the pressure line 31 that follows the ejector 36 forms the combustion air mixing space 37.

[0029] A waste gas stream 38 is drawn in by means of the combustion air stream introduced into the pressure line 31 by way of the fan 3, by way of the suction gap 37, from the waste gas cushion 381 formed within the reflector 4, which stream mixes with the combustion air stream. The waste gas/combustion air mixture that exits from the combustion air mixing space 37 of the pressure line 31 is mixed with the hydrogen stream introduced by means of the hydrogen supply 2, in the fuel mixing chamber 11, and, once again after exiting through the radiant panel 12, is ignited by means of a/the ignition electrode 13 arranged on the burner 1, on the outside, ahead of the radiant panel 12.

[0030] In the exemplary embodiment according to FIG. 3, a sensor holder 41 having a window 42 is produced in the reflector 4. A UV sensor 43 is introduced into the sensor holder, which sensor is connected, by way of an electrical line 44, to a setting devicenot shownfor interrupting the hydrogen supply. In the exemplary embodiment, the UV sensor 43 is oriented at an angle of 45? relative to the radiant panel 12. If no flame is detected by the UV sensor, then the setting device interrupts the hydrogen supply. The setting device or a control and regulation module connected to it can also be additionally connected to the ignition electrode 13 and set up in such a manner that in the event that no flame is detected, first the ignition electrode 13 is activated, and only after there continues to be no flame, an interruption of the hydrogen supply takes place.

[0031] In the exemplary embodiment according to FIG. 4, a burner 5 is provided, which once again is connected to a fan 3. The burner 5 comprises a fuel mixing chamber 51, which is delimited by a ceramic radiant panel 52. Lying opposite the radiant panel 52, a hydrogen supply 2 is arranged orthogonal to the panel, which supply empties into the fuel mixing chamber 51. A distributor panel 53 is arranged between the hydrogen supply 2 and the radiant panel 52, parallel to the radiant panel 52. The distributor panel 53 is provided, over its whole area, with a perforated pattern formed by cylindrical passages. The hydrogen supply 2 is connected to the distributor panel 53 by way of a hood-shaped section 21, so that whole-area flow of hydrogen through the distributor panel 53 takes place.

[0032] Between the distributor panel 53 and the radiant panel 52, an intake air channel 54 is provided, enclosing the fuel mixing chamber 51, the jets 55 of which channel are oriented in an imaginary plane set parallel to the distributor panel 53. The intake air channel 54 is connected to the fan 3, by which it is supplied.

[0033] The fan 3 is connected, on its suction side, with an ejector 32, in accordance with the first exemplary embodiment, the drive connector of which ejector is connected to a combustion air supply 33, and the suction connector of which ejector is connected to a waste gas supply line 34, which is passed through the reflector 4. A recirculation orifice 35 is arranged in the waste gas supply line 34. The combustion air drawn in by the fan 3, through the combustion air supply 33, once again serves as a drive medium here, by means of which medium part of the waste gas cushion 381 situated within the reflector 4 is drawn in. Here, the proportion of the waste gas stream in the combustion air stream can also be adjusted by means of the recirculation orifice 35, and thereby, in turn, the oxygen content of the waste gas/combustion air stream mixture is determined. The remaining waste gas stream flows out of the reflector 4 into the ambient air. Here, too, the combustion air mixing space 39 is integrated into the fan 3.

[0034] On the pressure side, a waste gas/combustion air mixture is supplied to the fuel mixing chamber 51 by means of the fan 3, by way of the intake air channel 54, which mixture flows over the whole area of the distributor panel 53 and mixes with the hydrogen that flows through the distributor panel 53, before it is ignited by an ignition electrode 13 arranged in the fuel mixing chamber 51. The hot combustion waste gas flows through the channels of the radiant panel 52 and thereby brings them to the required temperature.

[0035] The distributor panel 53 is cooled by means of the whole-area waste gas/combustion air mixture flow produced by means of the intake air channel 54 over the distributor panel 53, and thereby a flame flashback through the distributor panel 53 is prevented.