EP3406972A1 - Coaxial waste gas pipe with measurement opening - Google Patents
Coaxial waste gas pipe with measurement opening Download PDFInfo
- Publication number
- EP3406972A1 EP3406972A1 EP18167653.7A EP18167653A EP3406972A1 EP 3406972 A1 EP3406972 A1 EP 3406972A1 EP 18167653 A EP18167653 A EP 18167653A EP 3406972 A1 EP3406972 A1 EP 3406972A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust pipe
- maintenance opening
- coaxial
- closure flap
- opening
- 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.)
- Withdrawn
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
- F23J13/08—Doors or covers specially adapted for smoke-boxes, flues, or chimneys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2211/00—Flue gas duct systems
- F23J2211/10—Balanced flues (combining air supply and flue gas exhaust)
- F23J2211/101—Balanced flues (combining air supply and flue gas exhaust) with coaxial duct arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2213/00—Chimneys or flues
- F23J2213/60—Service arrangements
Definitions
- the invention relates to a measuring opening for coaxial exhaust pipes.
- the invention is therefore based on the object to avoid an open maintenance opening.
- a closure element is located on the maintenance opening, which automatically closes the opening in the case where no exhaust gas measuring probe is inserted in the maintenance opening.
- the drive can be done via a spring, gravity or elasticity.
- a whistle can generate a warning signal.
- the closure element may be a closure flap.
- This is preferably mounted via a hinge, wherein the rotary joint is preferably arranged at the upper edge of the mouth of the maintenance opening, so that gravity favors the closing.
- the closure flap can be arranged inside or outside the coaxial exhaust pipe. If the flap is inside, it is permanently exposed to the exhaust gas and must therefore be resistant to temperature and condensate.
- a flap with a cone or truncated cone favors the closing. Even a sloping contact surface favors the closing; This is especially true when the flap is closed only by gravity.
- the closure element may optionally be made of an elastic material, preferably a membrane. If at least one slot is arranged in it, the former deforms Membrane elastic when inserting the probe and closes this opening again elastic when pulling out.
- the flap can be made via a swivel joint. If this is arranged above the maintenance opening, then the force of gravity is sufficient to direct the closure flap downwards over the maintenance opening.
- closure flap is arranged outside the coaxial exhaust pipe, there is the advantage that it and the mechanism are not exposed to attack by the exhaust gases. In addition, it is recognizable in case of error if the flap is open.
- closure flap outside of the coaxial exhaust pipe, that the closure flap must first be moved away from the maintenance opening. Only then can an exhaust gas measuring probe be inserted into the maintenance opening. If, however, the closing flap is located inside the exhaust pipe, then the closing flap is opened when the exhaust gas measuring probe is inserted.
- closure flap is made of an elastic material, preferably plastic, then the closure flap can better conform to the opening of the maintenance opening and thus better seal.
- the flap has a cone, partial cone or a spherical segment, this element can penetrate into the mouth when closing and close it better.
- a whistle may be arranged in the maintenance opening, which generates a warning sound when the maintenance opening is open.
- the maintenance opening protrudes into the interior of the exhaust pipe and has an angling against the Flow direction of the exhaust pipe, so that the pipe is flowed through in an upward direction.
- the whistle is adapted to the exhaust gas temperature and the exhaust gas composition.
- FIG. 1 shows a coaxial exhaust pipe 1 with an inner exhaust pipe 2 and a coaxial arranged around fresh air line 3. From the environment a cylindrical maintenance opening 4 projects through the fresh air line 3 into the exhaust pipe 2. In the figure, an exhaust gas probe 5 projects through the maintenance opening 4 in the interior of Exhaust pipe 2.
- FIG. 2 shows a variant of the invention.
- the cylindrical maintenance opening 4 projects further into the exhaust pipe 2 in comparison with the prior art and also has a right-angled bend downwards, so that the opening protrudes counter to the exhaust gas flow direction.
- In the opening of the pipe is a 6th
- the exhaust gas flow is generally so low that the whistle 6 generates no noise. Even if it produces noises, this is not harmful.
- FIG. 3 shows a coaxial exhaust pipe 1 according to the invention with an inner exhaust pipe 2 and a coaxial arranged around fresh air line 3 and a maintenance opening 4, which projects from the outside through the fresh air line 3 into the exhaust pipe 2.
- a movable closing flap 7 is arranged on a rotary joint 8 outside of the coaxial exhaust pipe 1.
- Under the influence of gravity closes the shutter 7 without inserted exhaust probe maintenance opening 4, since in this case the center of gravity of the shutter 7 is located to the right of the pivot 8 and thus gravity causes a clockwise rotation and the mouth of the maintenance opening 4 of the shutter is closed.
- the closing force is increased. It is advantageous if the mouth of the maintenance opening 4 on the side of the closure flap 7 slopes slightly from top to bottom, with the maintenance opening 4 being slightly longer at the bottom, so that the closure flap 7 rests securely over the entire area by gravity.
- the rotary joint 8 does not necessarily have to be arranged at the top.
- the shutter 7 may alternatively be arranged in the interior of the maintenance opening 4 and is then opened upon insertion of an exhaust gas probe and closed again when pulling out.
- the closure flap 7 is arranged on a rotary joint 8, wherein a spring 12 acts on the closure flap 7 and closes it.
- the closure flap 7 seals against a closure cap 13, which is connected via a thread 14 with the maintenance opening 4.
- a seal 15 seals the closure flap 7 against the closure cap 13.
- the opening 16 is covered gas-tight by the closure flap 7 in conjunction with the seal 15.
- another sealing element for redundant sealing can be placed over the opening of the closure cap 13.
- a truncated cone 9 may be attached to the flap 7; this facilitates on the one hand the centering and also supports the closure.
- a complete cone or sphere segment can accomplish this task.
- another sealing element for redundant sealing can be set via the closing flap 7.
- the axis of rotation of the rotary joint 8 of the shutter 7 can also - as in FIG. 6 shown - parallel to the maintenance opening 4 and be arranged above the maintenance opening, so that the closure flap 7 is rotated in Ur Serviceer- or counterclockwise about the axis of rotation. Again, the focus is shifted upwards when opening, so that an open mouth of the maintenance opening 4 is closed without introduced exhaust gas probe under the influence of gravity.
- the rotary joint 8 does not necessarily have to be arranged at the top.
- closure flap 7 is made of an elastic material, this favors the sealing effect. If the closure flap 7 is made entirely of an elastic material such as a membrane, then an explicit pivot can optionally be dispensed with, since then the flap itself allows a displacement of position due to its elastic deformation. Alternatively, the closure flap 7 may have a separate, preferably elastic sealing surface.
- FIG. 7 shows a provided with slots 11 membrane 10, which is located in the maintenance opening 4.
- the membrane 10 opens at the slots 11. Upon withdrawal, the membrane 10 closes again. This solution is possible even without flap 7.
- FIG. 8 shows a maintenance opening 4 with a closed cap 13, which are connected by a tension spring 17.
- the tension spring 17 is connected via a fastening ring 18 with the maintenance opening 4. If the cap 13 is removed, an exhaust gas probe 5 can be inserted. The closure cap 13 is then due to the tensile force of the tension spring 17 immediately adjacent to the maintenance opening 4. If the exhaust gas probe 5 is removed, the closure flap 13 is pulled in front of the maintenance opening 4 and can then be screwed by a thread 14 with this.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Bei einem Koaxiales Abgasrohr mit einer inneren Abgasleitung und einer koaxial darum angeordneten Frischluftleitung sowie einer Wartungsöffnung (4), welche von außen durch die Frischluftleitung in die Abgasleitung ragt, ist an der Wartungsöffnung (4) eine bewegliche Verschlussklappe, welche unter Einwirkung von Schwerkraft die Wartungsöffnung (4) verschließt, angeordnet.In a coaxial exhaust pipe with an inner exhaust pipe and a coaxially arranged around fresh air line and a maintenance opening (4) which projects from the outside through the fresh air line into the exhaust pipe, at the maintenance opening (4) is a movable shutter, which under the influence of gravity, the maintenance opening (4) closes, arranged.
Description
Die Erfindung bezieht sich auf eine Messöffnung für koaxiale Abgasrohre.The invention relates to a measuring opening for coaxial exhaust pipes.
Bei koaxialen Abgasrohren für Heizgeräte ist ein rundes Abgasrohr von einer konzentrischen, ebenfalls runden Frischluftleitung umgeben. Bei Heizungsgeräten mit Gebläseunterstützung sind sie üblich, wobei in der Abgasleitung dann ein Überdruck und in der Frischluftleitung ein Unterdruck im Vergleich zur Umgebung herrscht. Hieraus ergeben sich vorwiegend zwei Vorteile: Mögliche Austritte durch Leckagen aus der Abgasleitung strömen in die Frischlaufleitung und gelangen somit nicht in die Umgebung, so dass eine Gefährdung von Personen ausgeschlossen ist.For coaxial exhaust pipes for heaters a round exhaust pipe is surrounded by a concentric, also round fresh air line. In heaters with fan assistance, they are common, in the exhaust pipe then there is a positive pressure and in the fresh air line, a negative pressure compared to the environment prevails. This results in two main advantages: Possible leaks through leaks from the exhaust pipe flow into the fresh-running line and thus do not reach the environment, so that a risk to persons is excluded.
Damit Servicetechniker und Schornsteinfeger Abgasmessungen vornehmen können, bedarf es Wartungsöffnungen, welche von der Umgebung durch einen Kanal in der Frischluftleitung in das innere Abgasrohr ragen, so dass die Abgasmesssonde eines Abgasmessgerät durch die Öffnung in das Abgasrohr gelangen kann. Da das Abgasrohr unter Überdruck steht, könnte bei offener Wartungsöffnung Abgas in den Aufstellraum gelangen. Um dies zu verhindern, wird die Wartungsöffnung mit einer Verschlusskappe geschlossen, wenn keine Abgasmesssonde eingesetzt ist.So that service technicians and chimney sweep can make exhaust gas measurements, it requires maintenance openings, which protrude from the environment through a channel in the fresh air line into the inner exhaust pipe, so that the exhaust probe of an exhaust gas meter can pass through the opening in the exhaust pipe. Since the exhaust pipe is under pressure, exhaust gas could reach the installation room when the maintenance opening is open. To prevent this, the maintenance opening is closed with a cap when no flue gas probe is inserted.
Jedoch kann es vorkommen, dass der Schornsteinfeger oder Servicetechniker das Verschließen vergisst und Abgas in den Aufstellraum gelangt ohne dass es jemand merkt.However, it may happen that the chimney sweep or service technician forgets the closing and exhaust gas enters the room without anyone noticing.
Der Erfindung liegt daher die Aufgabe zugrunde, eine offene Wartungsöffnung zu vermeiden.The invention is therefore based on the object to avoid an open maintenance opening.
Erfindungsgemäß wird dies mit einer Vorrichtung mit den Merkmalen des unabhängigen Patentanspruchs dadurch gelöst, dass sich an der Wartungsöffnung ein Verschlusselement befindet, welches in dem Fall, in dem keine Abgasmesssonde in der Wartungsöffnung eingesteckt ist, selbständig die Öffnung verschließt. Der Antrieb kann dabei über eine Feder, die Schwerkraft oder Elastizität erfolgen. Alternativ kann eine Pfeife ein Warnsignal erzeugen.According to the invention, this is achieved with a device having the features of the independent patent claim by virtue of the fact that a closure element is located on the maintenance opening, which automatically closes the opening in the case where no exhaust gas measuring probe is inserted in the maintenance opening. The drive can be done via a spring, gravity or elasticity. Alternatively, a whistle can generate a warning signal.
Positive Ausgestaltungen ergeben sich durch die Merkmale der abhängigen Patentanspruche.Positive embodiments result from the features of the dependent patent claims.
So kann das Verschlusselement eine Verschlussklappe sein. Diese ist vorzugsweise über ein Drehgelenk gelagert ist, wobei das Drehgelenkt vorzugsweise am oberen Rand der Mündung der Wartungsöffnung angeordnet ist, damit die Schwerkraft das Verschließen begünstigt. Die Verschlussklappe kann inner- oder außerhalb des koaxialen Abgasrohrs angeordnet sein. Befindet sich die Klappe im Inneren, ist sie permanent dem Abgas ausgesetzt und muss demnach entsprechend temperatur- und kondensatbeständig sein.Thus, the closure element may be a closure flap. This is preferably mounted via a hinge, wherein the rotary joint is preferably arranged at the upper edge of the mouth of the maintenance opening, so that gravity favors the closing. The closure flap can be arranged inside or outside the coaxial exhaust pipe. If the flap is inside, it is permanently exposed to the exhaust gas and must therefore be resistant to temperature and condensate.
Eine Verschlussklappe mit Kegel oder Kegelstumpf begünstigt das Verschließen. Auch eine schrägt Auflagefläche begünstigt das Verschließen; dies gilt insbesondere dann, wenn die Klappe lediglich durch die Schwerkraft verschlossen wird.A flap with a cone or truncated cone favors the closing. Even a sloping contact surface favors the closing; This is especially true when the flap is closed only by gravity.
Das Verschlusselement kann optional aus einem elastischen Material, vorzugsweise einer Membran hergestellt sein. Ist darin mindestens ein Schlitz angeordnet, so verformt sich die Membran elastisch beim Einschieben der Sonde und verschließt diese Öffnung wieder elastisch beim Herausziehen.The closure element may optionally be made of an elastic material, preferably a membrane. If at least one slot is arranged in it, the former deforms Membrane elastic when inserting the probe and closes this opening again elastic when pulling out.
Die Verschlussklappe kann über ein Drehgelenk erfolgen. Ist dieses oberhalb der Wartungsöffnung angeordnet, so genügt der Einfluss der Schwerkraft, um die Verschlussklappe nach unten über die Wartungsöffnung zu lenken.The flap can be made via a swivel joint. If this is arranged above the maintenance opening, then the force of gravity is sufficient to direct the closure flap downwards over the maintenance opening.
Ist die Verschlussklappe außerhalb des koaxialen Abgasrohres angeordnet, so ergibt sich der Vorteil, dass sie und der Mechanismus nicht dem Angriff durch die Abgase ausgesetzt ist. Zudem ist im Fehlerfall erkennbar, wenn die Klappe offen steht.If the closure flap is arranged outside the coaxial exhaust pipe, there is the advantage that it and the mechanism are not exposed to attack by the exhaust gases. In addition, it is recognizable in case of error if the flap is open.
Nachteilig ist bei einer Verschlussklappe außerhalb des koaxialen Abgasrohres, dass die Verschlussklappe zunächst von der Wartungsöffnung weg bewegt werden muss. Erst dann kann eine Abgasmesssonde in der Wartungsöffnung eingeschoben werden. Befindet sich hingegen die Verschlussklappe innen im Abgasrohr, so wird die Verschlussklappe beim Einschieben der Abgasmesssonde geöffnet.A disadvantage of a closure flap outside of the coaxial exhaust pipe, that the closure flap must first be moved away from the maintenance opening. Only then can an exhaust gas measuring probe be inserted into the maintenance opening. If, however, the closing flap is located inside the exhaust pipe, then the closing flap is opened when the exhaust gas measuring probe is inserted.
Ist die Verschlussklappe aus einem elastischen Material, vorzugsweise Kunststoff hergestellt, so kann sich die Verschlussklappe besser an die Mündung der Wartungsöffnung anschmiegen und somit besser abdichten.If the closure flap is made of an elastic material, preferably plastic, then the closure flap can better conform to the opening of the maintenance opening and thus better seal.
Verfügt die Verschlussklappe über einen Kegel, Teilkegel oder ein Kugelsegment, so kann dieses Element beim Verschließen in die Mündung eindringen und besser verschließen.If the flap has a cone, partial cone or a spherical segment, this element can penetrate into the mouth when closing and close it better.
Alternativ kann in der Wartungsöffnung eine Pfeife angeordnet sein, welche bei offener Wartungsöffnung einen Warnton erzeugt. Vorzugsweise ragt die Wartungsöffnung in das Innere der Abgasleitung hinein und verfügt über eine Abwinklung entgegen der Strömungsrichtung der Abgasleitung, damit die Pfeife im Aufstrom durchströmt wird. Die Pfeife ist an die Abgastemperatur und die Abgaszusammensetzung angepasst.Alternatively, a whistle may be arranged in the maintenance opening, which generates a warning sound when the maintenance opening is open. Preferably, the maintenance opening protrudes into the interior of the exhaust pipe and has an angling against the Flow direction of the exhaust pipe, so that the pipe is flowed through in an upward direction. The whistle is adapted to the exhaust gas temperature and the exhaust gas composition.
Die Erfindung wird anschließend anhand der Figuren erläutert. Hierbei zeigen:
-
ein koaxiales Abgasrohr gemäß dem Stand der Technik sowieFigur 1 -
ein erfindungsgemäßes koaxiales Abgasrohr gemäß einer ersten Lösungsidee,Figur 2 -
ein erfindungsgemäßes koaxiales Abgasrohr gemäß einer weiteren Lösungsidee,Figur 3 -
ein erfindungsgemäßes koaxiales Abgasrohr gemäß einer weiteren Lösungsidee,Figur 4 -
ein erstes vorteilhaftes Detail,Figur 5 -
ein erfindungsgemäßes koaxiales Abgasrohr gemäß einer weiteren Lösungsidee,Figur 6 -
eine einer weiteren Lösungsidee undFigur 7 -
ein einer weiteren Lösungsidee.Figur 8
-
FIG. 1 a coaxial exhaust pipe according to the prior art and -
FIG. 2 a coaxial exhaust pipe according to the invention according to a first solution idea, -
FIG. 3 a coaxial exhaust pipe according to the invention according to another solution idea, -
FIG. 4 a coaxial exhaust pipe according to the invention according to another solution idea, -
FIG. 5 a first advantageous detail, -
FIG. 6 a coaxial exhaust pipe according to the invention according to another solution idea, -
FIG. 7 one of another solution idea and -
FIG. 8 another solution idea.
Ist die Wartungsöffnung 4 nicht von einer Verschlusskappe verschlossen und die Abgassonde 5 steckt darin, so ist in der Regel der Abgasfluss derart gering, dass die Pfeife 6 keine Geräusche generiert. Selbst wenn sie Geräusche produziert, ist dies nicht schädlich.If the
Wird die Abgassonde 5 entfernt und die Wartungsöffnung 4 nicht von der Verschlusskappe verschlossen, so strömt Abgas durch die Pfeife 6 und produziert ein Pfeifgeräusch.If the
Befindet sich eine Feder im Drehgelenk 8, so muss das Drehgelenk 8 nicht zwingend oben angeordnet sein.If there is a spring in the rotary joint 8, then the
Wie in
Optional kann über die Öffnung der Verschlusskappe 13 ein weiteres dichtendes Element zur redundanten Abdichtung gesetzt werden.Optionally, another sealing element for redundant sealing can be placed over the opening of the
Wie in
Optional kann über die Verschlussklappe 7 ein weiteres dichtendes Element zur redundanten Abdichtung gesetzt werden.Optionally, another sealing element for redundant sealing can be set via the
Die Drehachse des Drehgelenks 8 der Verschlussklappe 7 kann auch - wie in
Befindet sich eine Feder im Drehgelenk 8, so muss das Drehgelenk 8 nicht zwingend oben angeordnet sein.If there is a spring in the rotary joint 8, then the
Ist die Verschlussklappe 7 aus einem elastischen Material hergestellt, so begünstigt dies die Dichtwirkung. Ist die Verschlussklappe 7 komplett aus einem elastischen Material wie einer Membrane hergestellt, so kann auf ein explizites Drehgelenk optional verzichtet werden, da dann die Klappe selbst durch ihre elastische Verformung eine Ortsverschiebung zulässt. Alternativ kann die Verschlussklappe 7 über eine gesonderte, vorzugsweise elastische Dichtfläche verfügen.If the
- 1 koaxiales Abgasrohr1 coaxial exhaust pipe
- 2 Abgasleitung2 exhaust pipe
- 3 Frischluftleitung3 fresh air line
- 4 Wartungsöffnung4 maintenance opening
- 5 Abgassonde5 exhaust gas probe
- 6 Pfeife6 whistle
- 7 Verschlussklappe7 flap
- 8 Drehgelenk8 swivel
- 9 Kegelstumpf9 truncated cone
- 10 Membran10 membrane
- 11 Schlitz11 slot
- 12 Feder12 spring
- 13 Verschlusskappe13 cap
- 14 Gewinde14 threads
- 15 Dichtung15 seal
- 16 Öffnung16 opening
- 17 Zugfeder17 tension spring
- 18 Befestigungsring18 mounting ring
Claims (10)
dadurch gekennzeichnet, dass an der Wartungsöffnung (4) ein bewegliches Verschlusselement (7, 10, 13), welche unter Einwirkung einer Feder (12, 17), von Schwerkraft und / oder seiner Elastizität die Wartungsöffnung (4) verschließt, angeordnet ist.Coaxial exhaust pipe (1) with an inner exhaust pipe (2) and a coaxial arranged around fresh air line (3) and a maintenance opening (4), which from the outside through the fresh air line (3) in the exhaust pipe (2) protrudes,
characterized in that at the maintenance opening (4), a movable closure element (7, 10, 13), which under the action of a spring (12, 17), by gravity and / or its elasticity closes the maintenance opening (4), is arranged.
dadurch gekennzeichnet, dass in der Wartungsöffnung (4) eine Pfeife (6) angeordnet ist.Coaxial exhaust pipe (1) with an inner exhaust pipe (2) and a coaxial arranged around fresh air line (3) and a maintenance opening (4), which from the outside through the fresh air line (3) in the exhaust pipe (2) protrudes,
characterized in that in the maintenance opening (4) a whistle (6) is arranged.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017111418 | 2017-05-24 |
Publications (1)
Publication Number | Publication Date |
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EP3406972A1 true EP3406972A1 (en) | 2018-11-28 |
Family
ID=62017185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18167653.7A Withdrawn EP3406972A1 (en) | 2017-05-24 | 2018-04-17 | Coaxial waste gas pipe with measurement opening |
Country Status (1)
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EP (1) | EP3406972A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3819542A1 (en) * | 2019-11-05 | 2021-05-12 | Vaillant GmbH | Heating device with a safe exhaust gas measuring opening |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1541117A (en) * | 1925-06-09 | Joseph cochkan | ||
GB890985A (en) * | 1959-09-23 | 1962-03-07 | Skoglund & Olson Ab | Improvements in inspection doors for chimney flues |
DE1942679U (en) * | 1965-05-13 | 1966-07-21 | Hovalwerk Ag Ospelt | SMOKE COLLECTORS FOR A BOILER. |
EP1318352A2 (en) * | 2001-12-05 | 2003-06-11 | CENTROTHERM Abgassystemtechnik GmbH | Arrangement for connecting two segments of a balanced flue duct |
DE102011009984A1 (en) * | 2011-02-01 | 2012-08-02 | Vaillant Gmbh | Exhaust pipe adapter of fuel heating system, has spring that is provided to push closure flap over measuring opening |
DE202012101545U1 (en) * | 2011-10-10 | 2013-01-17 | Dieter Bächle | Cover for closing a control opening on a plastic exhaust pipe and system with a closure cap |
-
2018
- 2018-04-17 EP EP18167653.7A patent/EP3406972A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1541117A (en) * | 1925-06-09 | Joseph cochkan | ||
GB890985A (en) * | 1959-09-23 | 1962-03-07 | Skoglund & Olson Ab | Improvements in inspection doors for chimney flues |
DE1942679U (en) * | 1965-05-13 | 1966-07-21 | Hovalwerk Ag Ospelt | SMOKE COLLECTORS FOR A BOILER. |
EP1318352A2 (en) * | 2001-12-05 | 2003-06-11 | CENTROTHERM Abgassystemtechnik GmbH | Arrangement for connecting two segments of a balanced flue duct |
DE102011009984A1 (en) * | 2011-02-01 | 2012-08-02 | Vaillant Gmbh | Exhaust pipe adapter of fuel heating system, has spring that is provided to push closure flap over measuring opening |
DE202012101545U1 (en) * | 2011-10-10 | 2013-01-17 | Dieter Bächle | Cover for closing a control opening on a plastic exhaust pipe and system with a closure cap |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3819542A1 (en) * | 2019-11-05 | 2021-05-12 | Vaillant GmbH | Heating device with a safe exhaust gas measuring opening |
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18D | Application deemed to be withdrawn |
Effective date: 20190529 |