EP0027175A2 - Shut-off system for flue gas exhaust conduits or suction air conduits of oil and gas fireplaces - Google Patents
Shut-off system for flue gas exhaust conduits or suction air conduits of oil and gas fireplaces Download PDFInfo
- Publication number
- EP0027175A2 EP0027175A2 EP80105324A EP80105324A EP0027175A2 EP 0027175 A2 EP0027175 A2 EP 0027175A2 EP 80105324 A EP80105324 A EP 80105324A EP 80105324 A EP80105324 A EP 80105324A EP 0027175 A2 EP0027175 A2 EP 0027175A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- shut
- opening
- burner
- housing
- cover
- 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- Withdrawn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
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L11/00—Arrangements of valves or dampers after the fire
- F23L11/005—Arrangements of valves or dampers after the fire for closing the flue during interruption of burner function
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L13/00—Construction of valves or dampers for controlling air supply or draught
- F23L13/02—Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having not other movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L3/00—Arrangements of valves or dampers before the fire
Definitions
- the invention relates to a shut-off system for installation in the exhaust gas or air intake line of oil and gas fireplaces, comprising a flow-through housing with 2 openings of different sizes, housed in this flow-through housing, a shut-off system which can be pivoted between a shut-off position and an open position.
- This shut-off system differs from the previous shut-off flaps in that the shut-off system first opens from the shut-off position into the open position with an almost constant low air pressure, which is generated by the burner fan, up to a certain position. From this position, the more the locking system opens, the less air pressure is required. The pressure difference is replaced by the weight (7) via the lever (6), which is attached outside the housing (1). The locking system is swiveled from the open to the shut-off position by the burner down and the partial weight of the cover (2). The full closure causes the weight (7) via the lever (6).
- This invention of the shut-off system with the lever (6) and weight (7) has the advantage over the conventionally electrically controlled shut-off flaps or swing flaps that short energy consumption is required for a short time until a certain opening.
- the predominant energy consumption is replaced by the weight (7), which is not the case with the motorized butterfly valves. There, full energy consumption is required over the entire runtime of the burner fan.
- This shut-off system has an absolutely tight shut-off through the seal (4) and cover (2), which is also not the case with the previous ones, so that a high percentage of the energy is lost when the burner is stopped.
- This locking system can also be opened with a magnet via a lever arm, servomotor or hydraulically via the burner control and closed with a spiral or tension spring, which is equivalent to conventional locking flaps.
- the stop for the open locking system is given by the cover (2) inside the housing (1a).
- the outlet cross-section in the blocking system open position in the housing (1a) is larger than the inlet cross-section (1c) in order to keep the gas or air flow resistance as low as possible.
- This flue gas or air shut-off system can have a cleaning opening (1b) with a closure shell (8), wing nut (9), support with attached threaded bolt (1 0 ) on the lower side in the housing (1).
- shut-off system in the air intake line in front of the burner fan differs depending on the burner version.
- the shut-off system differs from the conventional air flaps or swing flaps in that the locking system opens to a certain position first in the open position with a minimal negative pressure, which arises from the suction of the burner fan. From this position, the more the locking system opens, the less negative pressure is required in the housing space (1a). The predominant energy consumption for the vacuum is replaced by the weight (7) via the lever (6).
- This shut-off system can also be opened with a magnet via a lever arm, servomotor or hydraulically via the burner control and closed with a spiral or tension spring.
- shut-off system for the air intake line for the exhaust line differs only in material, material thickness and the opening (1c) is slightly shortened and the small opening from the reducer (11) is adapted to the respective blower intake supports or intake point for connection.
- the cleaning opening with sealing bowl (8), wing nut (9) and support with bolt (1 0 ) is not necessary.
- Another advantage is that a shut-off system with a correspondingly modified reducer (11) can be used for several makes and types.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
- Feeding And Controlling Fuel (AREA)
- Sampling And Sample Adjustment (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
Umfassend ein Durchflußgehäuse mit 2 verschieden großen Öffnungen (1a), (1c) in diesem Durchflußgehäuse untergebracht ein Sperrsystem, daß Schließt und Öffnet. Dieses Absperrsystem unterscheidet sich von den bisherigen Sperrklappen dadurch, daß das Sperrsystem von der Absperrstellung in die Offenstellung zuerst mit einem beinahe konstant geringen Luftüberdruck oder Gasüberdruck im Feuerraum, der vom Brennergebläse erzeugt wird, bis zu einer bestimmten Stellung öffnet. Ab dieser Stellung je mehr das Sperrsystem öffnet, umso weniger Luft-oder Gasüberdruck ist erforderlich. Die Druckdifferenz wird durch das Gewicht (7) über den Hebel (6) ersetzt, welches außerhalb des Gehäuses (1) angebracht ist. Die Schließung des Sperrsystems von der Offenstellung in die Absperrstellung erfolgt durch den Brennerstillstand und Teilgewicht des Deckels (2) und Verbindung (3). Die volle Schließung bewirkt das Gewicht (7) über den Hebel (6) und gelagerte Welle (5). Durch die 2 verschieden großen Öffnungen (1a), (1c) und der Dichtung (4) ist eine volle und dichte Schließung des Sperrsystems auch bei einer größeren Ansammlung der Verbrennungsrückstände gewährleistet, was den Wirkungsgrad dieses Sperrsystems gegenüber den bekannten Sperrklappen nennenswert verbessert und dadurch eine größere Wärmeenergie-Einsparung erziehlt wird. Eine optimale Reinigung der Dichtsitze ist durch die Öffnung (1b) gegeben die mit Schale (8), Flügelmutter (9) und Träger (10) mit angebrachtem Gewindestift geschloßen wird. In den Feuerstätten, wo kein Brennergebläse vorhanden ist, kann ersatzweise mit einem Stellmotor, elektromagnetisch oder hydraulisch über die Brennersteuerung geöffnet und mit einer Zug-oder Spiralfeder das Sperrsystem geschloßen werden.Including a flow housing with 2 different sized openings (1a), (1c) housed in this flow housing, a locking system that closes and opens. This shut-off system differs from the previous shut-off flaps in that the shut-off system opens from the shut-off position to the open position first with an almost constant low air pressure or gas pressure in the combustion chamber, which is generated by the burner fan, up to a certain position. From this position, the more the blocking system opens, the less excess air or gas pressure is required. The pressure difference is replaced by the weight (7) via the lever (6), which is attached outside the housing (1). The locking system is closed from the open position to the shut-off position by the burner down and the partial weight of the cover (2) and connection (3). The full closure causes the weight (7) via the lever (6) and the mounted shaft (5). Due to the 2 differently sized openings (1a), (1c) and the seal (4), a full and tight closure of the locking system is guaranteed even with a larger accumulation of combustion residues, which significantly improves the efficiency of this locking system compared to the known locking flaps and thereby one greater thermal energy savings are achieved. The sealing seats are optimally cleaned through the opening (1b) which is closed with the shell (8), wing nut (9) and support (10) with the grub screw attached. In the fireplaces, where there is no burner blower, the actuator can alternatively be opened with a servo motor, electromagnetically or hydraulically via the burner control, and the locking system can be closed with a tension or spiral spring.
Description
Die Erfindung betrifft ein Absperrsystem zum Einbau in die Abgas-oder Luftansaugleitung von Öl- und Gas- Feuerstätten, umfassend ein Durchflußgehäuse mit 2 verschieden großen Öffnungen, in diesem Durchflußgehäuse untergebracht ein Absperrsystem, das zwischen einer Absperrstellung und Offenstellung schwenkbar ist.The invention relates to a shut-off system for installation in the exhaust gas or air intake line of oil and gas fireplaces, comprising a flow-through housing with 2 openings of different sizes, housed in this flow-through housing, a shut-off system which can be pivoted between a shut-off position and an open position.
Die folgenden Figuren erläutern die Erfindung anhand eines Ausführungsbeispiels. Es stellen dar:
- Fig. 1 einen Vertikalschnitt durch das Absperrsystem
- Fig. 2 eine Ansicht in Pfeilrichtung II
- Fig. 1 shows a vertical section through the shut-off system
- Fig. 2 is a view in the direction of arrow II
Dieses Absperrsystem unterscheidet sich von den bisherigen Sperrklappen dadurch, daß das Sperrsystem von der Absperrstellung in die Offenstellung zuerst mit einem beinahe konstant geringen Luftdruck, der von dem Brennergebläse erzeugt wird, bis zu einer bestimmten Stellung öffnet. Ab dieser Stellung je mehr das Sperrsystem öffnet, umso weniger Luftdruck ist erforderlich. Die Druckdifferenz wird durch das Gewicht (7) über den Hebel (6) ersetzt, welches außerhalb des Gehäuses (1) angebracht ist. Die Schwenkung des Sperrsystems von der Offenin die Absperrstellung erfolgt durch den Brennerstillstand und Teilgewicht des Deckels (2). Die volle Schließung bewirkt das Gewicht (7) über den Hebel (6). Diese Erfindung des Absperrsystems mit dem Hebel (6) und Gewicht (7) hat den Vorteil gegenüber den herkömmlich elektrisch gesteuerten Absperrklappen oder Pendelklappen, daß bis zur bestimmten Öffnung kurzzeitig ein geringer Energieverbrauch erforderlich ist. Der überwiegende Energieverbrauch wird durch das Gewicht (7) ersetzt, was bei den motorisch gesteuerten Absperrklappen nicht der Fall ist. Dort ist ein voller Energieverbrauch über die ganze Laufzeit des Brennergebläses erforderlich. Dieses Absperrsystem weist durch die Dichtung (4) und Deckel (2) eine absolut dichte Absperrung auf, was ebenfalls bei den bisherigen nicht gegeben ist, so daß bei einem Brennerstillstand ein hoher Prozentsatz der Energie verloren geht.This shut-off system differs from the previous shut-off flaps in that the shut-off system first opens from the shut-off position into the open position with an almost constant low air pressure, which is generated by the burner fan, up to a certain position. From this position, the more the locking system opens, the less air pressure is required. The pressure difference is replaced by the weight (7) via the lever (6), which is attached outside the housing (1). The locking system is swiveled from the open to the shut-off position by the burner down and the partial weight of the cover (2). The full closure causes the weight (7) via the lever (6). This invention of the shut-off system with the lever (6) and weight (7) has the advantage over the conventionally electrically controlled shut-off flaps or swing flaps that short energy consumption is required for a short time until a certain opening. The predominant energy consumption is replaced by the weight (7), which is not the case with the motorized butterfly valves. There, full energy consumption is required over the entire runtime of the burner fan. This shut-off system has an absolutely tight shut-off through the seal (4) and cover (2), which is also not the case with the previous ones, so that a high percentage of the energy is lost when the burner is stopped.
Durch diese Erfindung kann sich im Innern des Gehäuses (1) oder (1a) über längere Zeit eine größere Menge Verbrennungsrückstände bilden, ohne daß die Absperrung beeinträchtigt wird, was bei den herkömmlichen Absperrklappen nicht der Fall ist,eine volle Absperrung ist dadurch nicht mehr gegeben, bei einer Teilabsperrung besteht die Gefahr, daß durch das schnellere Luftdurchströmen ein voller Energieverlust ensteht. Dieses Sperrsystem kann auch mit einem Magnet über einen Hebelarm, Stellmotor oder hydraulisch über die Brennersteuerung geöffnet und mit einer Spiral- oder Zugfeder geschlossen werden, was den herkömmlichen Sperrklappen gleichgestellt ist. Der Anschlag für das offene Sperrsystem ist durch den Deckel (2) im Gehäuseinnern (1a) gegeben. Der Austrittsquerschnitt beim Sperrsystem Offenstellung im Gehäuse (1a) ist größer als der Eintrittsquerschnitt (1c), um den Gas- oder Luftströmungswiderstand so gering wie möglich zu halten. Dieses Rauchgas- oder Luftabsperrsystem kann an der unteren Seite im Gehäuse (1) eine Reinigungsöffnung (1b) mit Verschlußschale (8), Flügelmutter (9), Träger mit angebrachtem Gewindebolzen (10) aufweisen.With this invention, a larger amount of combustion residues can form in the interior of the housing (1) or (1a) over a longer period of time without the shut-off being impaired, which is not the case with the conventional butterfly valves, so that a full shut-off is no longer provided , With a partial shut-off there is a risk that the faster air flow will result in a complete loss of energy. This locking system can also be opened with a magnet via a lever arm, servomotor or hydraulically via the burner control and closed with a spiral or tension spring, which is equivalent to conventional locking flaps. The stop for the open locking system is given by the cover (2) inside the housing (1a). The outlet cross-section in the blocking system open position in the housing (1a) is larger than the inlet cross-section (1c) in order to keep the gas or air flow resistance as low as possible. This flue gas or air shut-off system can have a cleaning opening (1b) with a closure shell (8), wing nut (9), support with attached threaded bolt (1 0 ) on the lower side in the housing (1).
Wenn die Verwendung als Rauchgasabsperrsystem erfolgt, gibt es verschiedene Einbaumöglichkeiten. Eine Möglichkeit ist:
- Beim nachträglichen Einbau kann in der Rauchabgasleitung dadurch eine günstige Einbaustelle erreicht werdens, wenn das Reduzierstück (11) mit verwendet wird. Eine andere Möglichkeit ist:
- Daß dieses Absperrsystem unmittelbar am Kamin eingebaut wird. Dadurch kann das Reduzierstück(11) gespart werden, was bei Neuanlagen ohne Schwierigkeiten durchführbar ist. Die Installation eines Absperrsystems in die Abgasleitung kann ohne großen Aufwand und speziele Kenntnisse durchgeführt werden.
- When retrofitted, a favorable installation point can be achieved in the smoke exhaust pipe if the reducer (11) is also used. Another possibility is:
- That this barrier system is installed directly on the chimney. As a result, the reducer (11) can be saved, which can be carried out without difficulty in new systems. The installation of a shut-off system in the exhaust pipe can be carried out with little effort and special knowledge.
Die Verwendung eines Absperrsystems in der Luftansaugleitung vor dem Brennergebläse ist je nach Brennerausführung unterschiedlich. Das Absperrsystem unterscheidet sich von den herkömmlichen Luftklappen oder Pendelklappen dadurch, daß das Sperrsystem in die Offenstellung zuerst mit einem minimalen Unterdruck, der durch das Ansaugen des Brennergebläses ensteht, bis zu einer bestimmten Stellung öffnet. Ab dieser Stellung je mehr das Sperrsystem öffnet, umso weniger Unterdruck ist im Gehäuseraum (1a) erforderlich. Der überwiegende Energieverbrauch für den Unterdruck wird durch das Gewicht (7) über den Hebel (6) ersetzt. Dieses Absperrsystem kann auch mit einem Magnet über einen Hebelarm, Stellmotor oder hydraulisch über die Brennersteuerung geöffnet und mit einer Spiral- oder Zugfeder geschlossen werden. Im übrigen unterscheidet sich das Absperrsystem für Luftansaugleitung für die Abgasleitung nur im Werkstoff, Materialstärke sowie die Öffnung (1c) ist etwas gekürzt und die kleine Öffnung vom Reduzierstück (11) ist dem jeweiligen GebläsBansaugstützen oder Ansaugstelle zur Verbindung angepaßt. Die Reinigungsöffnung mit Uerschlußschale (8), Flügelmutter (9) und Träger mit Bolzen (10) ist nicht erforderlich. Noch ein Vorteil ist daß ein Absperrsystem mit entsprechend geändertem Reduzierstück (11) für mehrere Fabrikate und Typen verwendbar ist.The use of a shut-off system in the air intake line in front of the burner fan differs depending on the burner version. The shut-off system differs from the conventional air flaps or swing flaps in that the locking system opens to a certain position first in the open position with a minimal negative pressure, which arises from the suction of the burner fan. From this position, the more the locking system opens, the less negative pressure is required in the housing space (1a). The predominant energy consumption for the vacuum is replaced by the weight (7) via the lever (6). This shut-off system can also be opened with a magnet via a lever arm, servomotor or hydraulically via the burner control and closed with a spiral or tension spring. Otherwise, the shut-off system for the air intake line for the exhaust line differs only in material, material thickness and the opening (1c) is slightly shortened and the small opening from the reducer (11) is adapted to the respective blower intake supports or intake point for connection. The cleaning opening with sealing bowl (8), wing nut (9) and support with bolt (1 0 ) is not necessary. Another advantage is that a shut-off system with a correspondingly modified reducer (11) can be used for several makes and types.
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2936296 | 1979-07-09 | ||
DE2936296A DE2936296C2 (en) | 1979-09-07 | 1979-09-07 | Shut-off device for an exhaust or air intake line |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0027175A2 true EP0027175A2 (en) | 1981-04-22 |
EP0027175A3 EP0027175A3 (en) | 1981-09-09 |
Family
ID=6080348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80105324A Withdrawn EP0027175A3 (en) | 1979-09-07 | 1980-09-05 | Shut-off system for flue gas exhaust conduits or suction air conduits of oil and gas fireplaces |
Country Status (5)
Country | Link |
---|---|
US (1) | US4369718A (en) |
EP (1) | EP0027175A3 (en) |
JP (1) | JPS56105214A (en) |
DE (1) | DE2936296C2 (en) |
NO (1) | NO151512C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0141944B1 (en) * | 1983-08-31 | 1988-11-17 | Viessmann Werke GmbH & Co. | Regulating device for chimney draught |
EP0981023A1 (en) * | 1998-08-17 | 2000-02-23 | Coopra B.V. | Burner apparatus having valve means |
WO2016066844A1 (en) * | 2014-10-31 | 2016-05-06 | Firebird Heating Solutions Ltd | Improved boiler heating system having an external heat exchanger |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3322091C2 (en) * | 1983-06-20 | 1985-10-17 | Oskar 8870 Günzburg Baier | Chimney flap |
US5259411A (en) * | 1992-11-02 | 1993-11-09 | The Field Controls Division Of Heico, Inc. | Flow control |
DE20219557U1 (en) * | 2002-12-17 | 2004-04-29 | Kutzner + Weber Gmbh & Co. Kg | Shut-off device for an exhaust gas path in an exhaust system of a fireplace |
US6854428B1 (en) | 2004-06-22 | 2005-02-15 | The Water Heater Industry Joint Research And Development Consortium | Water heater with normally closed air inlet damper |
US20060090745A1 (en) * | 2004-10-29 | 2006-05-04 | Albenie Cormier | Chimney draft control valve |
US20210123598A1 (en) * | 2019-10-25 | 2021-04-29 | The Marley Company Llc | Variable Orifice Restoration Device |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE84317C (en) * | ||||
US1943342A (en) * | 1931-03-16 | 1934-01-16 | Emco Mfg Company | Draft regulator |
US1946568A (en) * | 1931-12-07 | 1934-02-13 | Butler | Draft control device |
US1973600A (en) * | 1933-03-17 | 1934-09-11 | Beairsto John Hector | Damper |
US1988539A (en) * | 1933-10-28 | 1935-01-22 | Bowersox Marvin Wayne | Double acting automatic draft control device |
DE627811C (en) * | 1932-11-04 | 1936-03-24 | Bernhard Meinen | Device for shutting off the flue gas ducts of combustion systems |
US2721705A (en) * | 1954-08-13 | 1955-10-25 | Perfection Ind Inc | Draft regulator |
US3087677A (en) * | 1959-07-24 | 1963-04-30 | Hupp Corp | Draft regulators |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2557210A (en) * | 1951-06-19 | Draft controlling and back draft | ||
DE1992166U (en) * | 1968-08-22 | Günther Riggers, 2141 Barchel | Flue regulator for oil and gas burners | |
US3123028A (en) * | 1964-03-03 | Device for controlling the pressure in a furnace chamber | ||
US802110A (en) * | 1904-12-30 | 1905-10-17 | Howard L Rahn | Damper. |
US2111611A (en) * | 1929-06-18 | 1938-03-22 | Gilman Fanfold Corp | Record strip regulator |
US2620984A (en) * | 1949-02-16 | 1952-12-09 | Larsen William | Sealed seat draft regulator |
DE1971132U (en) * | 1967-06-13 | 1967-10-26 | Heinrich Kramer | THROTTLE BODY CONTROLLER FOR CHIMNEYS. |
US3987785A (en) * | 1975-03-21 | 1976-10-26 | Long Lebeau M | Energy saving device |
-
1979
- 1979-09-07 DE DE2936296A patent/DE2936296C2/en not_active Expired
-
1980
- 1980-09-04 NO NO802620A patent/NO151512C/en unknown
- 1980-09-05 EP EP80105324A patent/EP0027175A3/en not_active Withdrawn
- 1980-09-08 JP JP12446680A patent/JPS56105214A/en active Pending
- 1980-09-08 US US06/185,098 patent/US4369718A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE84317C (en) * | ||||
US1943342A (en) * | 1931-03-16 | 1934-01-16 | Emco Mfg Company | Draft regulator |
US1946568A (en) * | 1931-12-07 | 1934-02-13 | Butler | Draft control device |
DE627811C (en) * | 1932-11-04 | 1936-03-24 | Bernhard Meinen | Device for shutting off the flue gas ducts of combustion systems |
US1973600A (en) * | 1933-03-17 | 1934-09-11 | Beairsto John Hector | Damper |
US1988539A (en) * | 1933-10-28 | 1935-01-22 | Bowersox Marvin Wayne | Double acting automatic draft control device |
US2721705A (en) * | 1954-08-13 | 1955-10-25 | Perfection Ind Inc | Draft regulator |
US3087677A (en) * | 1959-07-24 | 1963-04-30 | Hupp Corp | Draft regulators |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0141944B1 (en) * | 1983-08-31 | 1988-11-17 | Viessmann Werke GmbH & Co. | Regulating device for chimney draught |
EP0981023A1 (en) * | 1998-08-17 | 2000-02-23 | Coopra B.V. | Burner apparatus having valve means |
NL1009884C2 (en) * | 1998-08-17 | 2000-02-23 | Coopra B V | Combustion device with sealing means. |
WO2016066844A1 (en) * | 2014-10-31 | 2016-05-06 | Firebird Heating Solutions Ltd | Improved boiler heating system having an external heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
JPS56105214A (en) | 1981-08-21 |
DE2936296C2 (en) | 1982-12-30 |
DE2936296A1 (en) | 1981-03-19 |
NO151512B (en) | 1985-01-07 |
EP0027175A3 (en) | 1981-09-09 |
NO802620L (en) | 1981-03-09 |
NO151512C (en) | 1985-04-24 |
US4369718A (en) | 1983-01-25 |
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