EP4639030A1 - Heizgerät - Google Patents
HeizgerätInfo
- Publication number
- EP4639030A1 EP4639030A1 EP23840880.1A EP23840880A EP4639030A1 EP 4639030 A1 EP4639030 A1 EP 4639030A1 EP 23840880 A EP23840880 A EP 23840880A EP 4639030 A1 EP4639030 A1 EP 4639030A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion chamber
- heating device
- sensor unit
- optical sensor
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M11/00—Safety arrangements
- F23M11/04—Means for supervising combustion, e.g. windows
- F23M11/045—Means for supervising combustion, e.g. windows by observing the flame
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M2900/00—Special features of, or arrangements for combustion chambers
- F23M2900/11041—Means for observing or monitoring flames using photoelectric devices, e.g. phototransistors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2229/00—Flame sensors
- F23N2229/04—Flame sensors sensitive to the colour of flames
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2229/00—Flame sensors
- F23N2229/18—Flame sensor cooling means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2900/00—Special features of, or arrangements for controlling combustion
- F23N2900/05005—Mounting arrangements for sensing, detecting or measuring devices
Definitions
- the invention relates to a heating device according to the preamble of patent claim 1.
- a heating device of the type mentioned above is known from patent document EP 3 872 462 A1.
- This consists of a combustion chamber delimited by a wall and containing a burner, an optical sensor unit and a protective disk associated with the wall and arranged between the combustion chamber and the sensor unit.
- the sensor unit is arranged in relation to the combustion chamber in such a way that it can be cooled by a fluid flow.
- the invention is based on the object of improving a heating device of the type mentioned at the beginning.
- a heating device is to be created with a sensor unit which is on the one hand sufficiently temperature-protected and on the other hand also works reliably at all times of operation.
- a thermal insulation element with a viewing channel for the optical sensor unit pointing from the protective screen in the direction of the burner is arranged on the wall of the combustion chamber.
- the solution according to the invention is characterized in that the viewing passage in the thermal insulation element makes it possible, on the one hand, to protect the sensor unit from excessively high temperatures; on the other hand, the viewing passage makes it possible to maintain the temperature of the protective screen sufficiently to prevent condensation.
- Figure 1 shows a schematic section through a first embodiment of the heating device according to the invention
- FIG. 2 as a partial section and as a second embodiment 25 the heater with an optical sensor unit comprising a so-called TO-5 housing;
- Figure 3 also as a partial section and as a third embodiment of an alternatively designed optical sensor unit.
- the heating device shown in the figures consists, in a known manner, of a combustion chamber 1 delimited by a wall 1.1 and accommodating a burner 1.2, an optical sensor unit 2 and a protective screen 3 assigned to the wall 1.1 and arranged between the combustion chamber 1 and the sensor unit 2.
- the optical sensor unit 2 is preferably designed to detect ultraviolet light.
- the above requirement "assigned" means that the protective screen 3 is arranged at a maximum distance of 25 mm, preferably a maximum of 10 mm, particularly preferably 5 mm, from the combustion chamber-side surface 10 of the wall 1.1.
- the aforementioned burner 1.2 it is preferably provided that it is designed to burn a gaseous fuel.
- the fuel contains at least 10%, preferably at least 50%, particularly preferably at least 90% hydrogen.
- the combustion chamber 1 has a cover accommodating the burner 1.2, wherein the aforementioned wall 1.1 is formed as part of this cover.
- a part of the sensor unit 2 facing away from the combustion chamber is designed to protrude into a flow region for a fluid, preferably air.
- a thermal insulation element 4 with a visual passage channel 4.1 for the optical sensor unit 2 pointing from the protective screen 3 in the direction of the burner 1.2 In this case, to ensure perfect detection, it is particularly preferred that an imaginary main axis of the burner 1.2 and an imaginary main axis of the visual passage channel 4.1 are designed to intersect, preferably in the interior of the burner 1.2. As expressed in other words above, this solution offers protection of the sensor against overheating on the one hand and protection against condensate formation which hinders the measurement on the other. As a very precautionary measure, it can also be preferably provided that the protective screen 3 is preferably designed to be electrically heatable.
- an optical lens 2.3 for the sensor element is arranged between a sensor element, preferably a UV diode, the optical sensor unit 2 and the protective screen 3.
- a sensor element preferably a UV diode
- the light is bundled in a suitable manner (although the bundling effect of the lens can theoretically be close to zero or even equal to zero), and this lens 2.3 also protects the sensor element (i.e. in addition to the protective screen 3).
- the thermal insulation element 4 is designed to enclose the burner 1.2.
- the thermal insulation element 4 has a through-opening 4.4 for the burner 1.2.
- the thermal insulation element 4 is at least approximately disk-shaped and has a flat side 4.2 facing the combustion chamber and a flat side 4.3 facing away from the combustion chamber.
- the flat side 4.2 facing the combustion chamber can also be slightly conical, as shown, with its recess in the direction of the burner 1.2.
- the viewing passage channel 4.1 is designed to extend from the flat side 4.2 facing the combustion chamber to the flat side 4.3 facing away from the combustion chamber.
- disk-shaped preferably means that the thermal insulation element 4 has approximately the shape of a cylinder, the radius of which is many times larger than its thickness. 15
- the optical sensor unit 2 and the protective screen 3 are designed as a module that is jointly attached to the wall 1.1. They are therefore attached together or jointly to the wall 1.1 when the heater is assembled.
- a sensor of the optical sensor unit 2 is arranged either in a plane of the wall 1.1 or on a side of the wall 1.1 facing away from the combustion chamber.
- the protective disk 3 is arranged at a point in the viewing passage channel 4.1 facing the wall and facing away from the combustion chamber, preferably in the first third of the channel facing the wall.
- the optical sensor unit 2 has an external thread 2.2 and the wall 1.1 of the combustion chamber 10 has an internal thread 1.3 matching the external thread 2.2.
- the optical sensor 2 in order to protect the optical sensor 2, it is preferably provided that it is arranged at least predominantly outside the combustion chamber 1. Finally, it is preferably provided that the optical sensor unit 2 is designed to be gas-tight with respect to the combustion chamber 1.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Control Of Combustion (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022134666.8A DE102022134666A1 (de) | 2022-12-23 | 2022-12-23 | Heizgerät |
| PCT/DE2023/100971 WO2024132032A1 (de) | 2022-12-23 | 2023-12-14 | Heizgerät |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4639030A1 true EP4639030A1 (de) | 2025-10-29 |
Family
ID=89619221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23840880.1A Pending EP4639030A1 (de) | 2022-12-23 | 2023-12-14 | Heizgerät |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4639030A1 (de) |
| CN (1) | CN120548440A (de) |
| DE (1) | DE102022134666A1 (de) |
| WO (1) | WO2024132032A1 (de) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3951584A (en) * | 1974-05-23 | 1976-04-20 | Midland-Ross Corporation | Self-stabilizing burner |
| DE2823410A1 (de) * | 1978-04-25 | 1979-11-08 | Cerberus Ag | Flammenmelder |
| US5608515A (en) * | 1995-04-20 | 1997-03-04 | General Electric Company | Double window for protecting optical sensors from hazardous environments |
| DE102009043289B3 (de) | 2009-09-29 | 2011-04-28 | Viessmann Werke Gmbh & Co Kg | Heizgerät |
| DE102012211959A1 (de) * | 2012-07-10 | 2014-01-16 | Dieter Kutzner | Überwachungseinrichtung für die Überwachung von industriellen Beheizungseinrichtungen nebst Verwendung |
| DE102017104769B4 (de) * | 2017-03-07 | 2019-12-05 | Webasto SE | Brenner mit verbesserter Blende |
| CN209042439U (zh) * | 2018-09-29 | 2019-06-28 | 中国航发沈阳发动机研究所 | 一种燃烧室紫外火焰探测器组件 |
| US11703223B2 (en) * | 2019-09-13 | 2023-07-18 | Onpoint Technologies, Llc | Multi-function sight port and method of installing a multi-function sight port |
| DE102020104195A1 (de) | 2020-02-18 | 2021-08-19 | Vaillant Gmbh | Wärmezelle mit optischer Sensoreinheit |
| DE102020135067A1 (de) * | 2020-12-29 | 2022-06-30 | Chemin Gmbh | Sondenkopf und Verwendung eines Sondenkopfs |
| DE102021100756A1 (de) * | 2021-01-15 | 2022-07-21 | Vaillant Gmbh | Verfahren und Anordnung zur Beobachtung von Flammen in einem Heizgerät, das mit Wasserstoff oder wasserstoffhaltigem Brenngas betreibbar ist |
-
2022
- 2022-12-23 DE DE102022134666.8A patent/DE102022134666A1/de active Pending
-
2023
- 2023-12-14 CN CN202380088602.4A patent/CN120548440A/zh active Pending
- 2023-12-14 WO PCT/DE2023/100971 patent/WO2024132032A1/de not_active Ceased
- 2023-12-14 EP EP23840880.1A patent/EP4639030A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN120548440A (zh) | 2025-08-26 |
| DE102022134666A1 (de) | 2024-07-04 |
| WO2024132032A1 (de) | 2024-06-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
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| 17P | Request for examination filed |
Effective date: 20250702 |
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| AK | Designated contracting states |
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| TPAC | Observations filed by third parties |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) |