WO1999063272A1 - Regeleinrichtung für gasbrenner - Google Patents
Regeleinrichtung für gasbrenner Download PDFInfo
- Publication number
- WO1999063272A1 WO1999063272A1 PCT/EP1999/003670 EP9903670W WO9963272A1 WO 1999063272 A1 WO1999063272 A1 WO 1999063272A1 EP 9903670 W EP9903670 W EP 9903670W WO 9963272 A1 WO9963272 A1 WO 9963272A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- line
- combustion air
- control device
- flow
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N5/184—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N5/188—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using mechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/04—Measuring pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/02—Starting or ignition cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2233/00—Ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/16—Fuel valves variable flow or proportional valves
-
- 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
- F23N2900/05181—Controlling air to fuel ratio by using a single differential pressure detector
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
Definitions
- the invention relates to a control device for gas burners according to the preamble of claim 1.
- Control devices for gas burners are used to provide a gas / air mixture, that is to say to supply a gas stream and a ner combustion air stream to a burner.
- the gas flow through a gas valve is adjustable depending on the nerbrennimgs air pressure.
- Control devices for gas burners of the above type are known from the prior art, for. B. EP 0 390 964 AI, well known.
- the pressure is determined using a membrane, that is to say pneumatically.
- the gas flow through the gas valve is regulated.
- this pneumatic route has a number of disadvantages, all of which limit the scope of known control devices.
- the hysteresis properties of the membrane and the forces acting between the membrane and the gas valve limit the working area and thus the area of application.
- the interplay between the required small actuating forces and the operating tolerances of the membrane as a result of disturbing influences such as temperature fluctuations or the like results in a restriction of the range of use of known control devices.
- the present invention is based on the problem of creating a regulating device for gas burners which avoids the above disadvantages and thus has a larger area of application.
- Fig. 1 shows a control device according to the invention with further assemblies according to a first embodiment of the invention in a schematic representation
- Fig. 2 shows a control device according to the invention with further assemblies according to a second embodiment of the invention also in a schematic representation.
- the present invention relates to control devices for gas burners.
- a gas / air mixture is to be fed to a burner (not shown).
- a first line 10 is provided which leads the gas flow to the burner.
- a gas valve 11 is assigned to the first line 10.
- the combustion air is fed to the burner (not shown) via a second line 12.
- the second line 12 consequently leads the ner combustion air flow to the burner.
- a fan 13 is assigned to the second line 12. The speed of the fan 13 determines the ner combustion air pressure and thus the ner combustion air flow.
- a diaphragm or throttle point 14 is arranged within the second line 12 carrying the ner combustion air flow.
- the first line 10 carrying the gas flow opens in the flow direction of the combustion air behind the throttle point 14 into the second line 12 carrying the ner combustion air flow.
- a gas nozzle 15 closes off the first line 10 in the region of the second line 12.
- a gas / air mixture is consequently present behind the gas nozzle 15 in the direction of flow.
- the gas pressure is also to be increased by 1 mbar.
- the sensor 16 is designed as a differential pressure sensor, in particular as a flow meter, anemometer or the like.
- first measuring point 17 the sensor 16 is connected to the first line 10 carrying the gas flow.
- second measuring point 18 the sensor 16 is connected to the second line 12 carrying the combustion air flow.
- the first measuring point 17 is positioned in front of the gas nozzle 15 in the direction of flow of the gas.
- the second measuring point 18 is arranged in the flow direction of the combustion air in front of the throttle point 14.
- the gas pressure must correspond to the combustion air pressure.
- the sensor 16 is designed as a flow meter or anemometer, this means that the flow through the sensor 16 is zero.
- the sensor 16 experiences a flow from the first line 10 in the direction of the second line 12.
- the sensor 16 experiences a flow from the second line 12 in the direction to the first line 10.
- the pressure ratios between the combustion air pressure and the gas pressure can thus be determined by the sensor 16.
- the sensor 16 Depending on the above pressure conditions, the sensor 16 generates an electrical or electronic signal 19 which is used to adjust the gas valve 11. According to FIG. 1, the electrical or electronic signal 19 is fed to a control or regulating device 20, which generates a control signal 21 from the signal 19 for an actuator 22 assigned to the gas valve 11.
- the control device shown in FIG. 1 consequently follows the combustion air pressure in order to regulate the gas flow through the gas valve 11 in such a way that a 1: 1 gas / air combination control is achieved.
- the sensor 16 detects a pressure difference of zero between combustion air pressure and gas pressure, the signal 19 corresponds to a pressure difference of zero and the gas valve 11 can be operated unchanged.
- the sensor 16 detects a combustion air pressure that is higher than the gas pressure, the gas or valve 11 must be controlled with the aid of the electrical or electronic signal 19 generated by the sensor 16 in such a way that the gas flow increases.
- the control unit 20 generates a control signal 21 for the actuator 22 of the gas valve 11, such that the signal 19 is again routed to an amount that corresponds to a pressure difference of zero.
- the sensor 16 detects a reduced combustion air pressure compared to the gas pressure, the gas valve 11 must be controlled with the aid of the electrical or electronic signal generated by the sensor 16 such that the gas flow is reduced.
- the gas valve 11 can be of any design.
- the actuator 22 of the gas valve 11 is controlled or regulated in such a way that the gas valve 11 switches back and forth between the on / off and on / off states. If the combustion air pressure is higher than the gas pressure, a control signal 21 will accordingly be generated, on the basis of which the actuator 22 opens or activates the gas valve 11. On the other hand, if the combustion air pressure is lower than the gas pressure, the actuator 22 will close or deactivate the gas valve 11 on the basis of the control signal 21.
- a resulting oscillating signal provides information about the correct functioning of the control system and can therefore be used as a safety signal. As long as the oscillating sensor signal is present, a safety valve (not shown) upstream of the gas valve 11 can be activated or opened.
- the control device shown in FIG. 1 can be used to measure the air volume in the case in which the gas valve 11 is closed.
- the pressure difference across the throttle point 14 can therefore be determined with the aid of the sensor 16 and an air quantity measurement can thus be carried out.
- the air quantity measurement can be used to set the parameter range of the fan 13 depending on a configuration of the combustion air supply and flue gas discharge.
- the air volume measurement also serves to monitor and set a minimum supply of combustion air, which is required to start the gas burner safely.
- a different transmission ratio can exist between the exemplary embodiment according to FIG Gas flow and air flow can be realized, i.e. a 1: N gas / air compound control.
- a coupling line 23 is provided between the first line 10 carrying the gas flow and the second line 12 carrying the combustion air flow, two constrictions 24, 25 being arranged within the coupling line 23.
- the constrictions 24, 25 are throttling points.
- the position of the constrictions 24, 25 in the coupling line 23 with respect to the lines 10, 12 is of minor importance. However, the flow resistance of the lines must be noticeably lower than the flow resistance of the constrictions 24, 25.
- the coupling line 23 is connected to the second line 12 carrying the combustion air flow in the flow direction of the combustion air after or behind the throttle point 14.
- the coupling line 23 is connected to the first line 10 carrying the gas flow in the flow direction of the gas in front of the gas nozzle 15.
- the sensor 16 is arranged between the first line 10 and the second line 12, as in the exemplary embodiment according to FIG. 2, however, the first measuring point 17 is arranged in the area of the coupling line 23 between the constrictions 24, 25.
- the second measuring point 18 is again arranged in the area of the second line 12 in the flow direction of the combustion air in front of the throttle point 14.
- control device 20 also generates a control signal 21 for the actuator 22 of the gas valve 11 in such a way that the signal 19 of the sensor 16 is guided to an amount which corresponds to a pressure difference of zero.
- a 1: N gas / air compound control can be implemented, i.e. that when the combustion air pressure increases by 1 mbar, the gas pressure is increased by N mbar.
- the gas pressure can be increased in relation to the combustion air pressure.
- the degree of reinforcement is determined by the constrictions 24, 25.
- one of the constrictions 24, 25 can be variable or changeable. In this case it is possible, by changing or adjusting a constriction 24 or 25, to vary the transmission ratio between the combustion air flow and the gas flow or the amplification.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK99955316T DK1084369T3 (da) | 1998-06-02 | 1999-05-27 | Reguleringsindretning til gasbrændere |
CA002321659A CA2321659A1 (en) | 1998-06-02 | 1999-05-27 | Regulating device for gas burners |
US09/701,664 US6561791B1 (en) | 1998-06-02 | 1999-05-27 | Gas burner regulating system |
EP99955316A EP1084369B1 (de) | 1998-06-02 | 1999-05-27 | Regeleinrichtung für gasbrenner |
KR1020007011397A KR20010071151A (ko) | 1998-06-02 | 1999-05-27 | 가스버너용 조정장치 |
DE59904050T DE59904050D1 (de) | 1998-06-02 | 1999-05-27 | Regeleinrichtung für gasbrenner |
JP2000552436A JP2002517702A (ja) | 1998-06-02 | 1999-05-27 | ガスバーナーの調整装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19824521.1 | 1998-06-02 | ||
DE19824521A DE19824521B4 (de) | 1998-06-02 | 1998-06-02 | Regeleinrichtung für Gasbrenner |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999063272A1 true WO1999063272A1 (de) | 1999-12-09 |
Family
ID=7869609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/003670 WO1999063272A1 (de) | 1998-06-02 | 1999-05-27 | Regeleinrichtung für gasbrenner |
Country Status (9)
Country | Link |
---|---|
US (1) | US6561791B1 (de) |
EP (1) | EP1084369B1 (de) |
JP (1) | JP2002517702A (de) |
KR (1) | KR20010071151A (de) |
CA (1) | CA2321659A1 (de) |
DE (2) | DE19824521B4 (de) |
DK (1) | DK1084369T3 (de) |
ES (1) | ES2186419T3 (de) |
WO (1) | WO1999063272A1 (de) |
Cited By (2)
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EP1207347A2 (de) | 2000-11-11 | 2002-05-22 | Honeywell B.V. | Verfahren zum Regeln eines Gasbrenners |
US20130115563A1 (en) * | 2011-11-07 | 2013-05-09 | Honeywell Technologies Sarl, Z.A. | Method for operating a gas burner |
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- 1999-05-27 ES ES99955316T patent/ES2186419T3/es not_active Expired - Lifetime
- 1999-05-27 EP EP99955316A patent/EP1084369B1/de not_active Expired - Lifetime
- 1999-05-27 DK DK99955316T patent/DK1084369T3/da active
- 1999-05-27 JP JP2000552436A patent/JP2002517702A/ja active Pending
- 1999-05-27 WO PCT/EP1999/003670 patent/WO1999063272A1/de not_active Application Discontinuation
- 1999-05-27 US US09/701,664 patent/US6561791B1/en not_active Expired - Lifetime
- 1999-05-27 KR KR1020007011397A patent/KR20010071151A/ko not_active Application Discontinuation
- 1999-05-27 DE DE59904050T patent/DE59904050D1/de not_active Expired - Lifetime
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1207347A2 (de) | 2000-11-11 | 2002-05-22 | Honeywell B.V. | Verfahren zum Regeln eines Gasbrenners |
US20130115563A1 (en) * | 2011-11-07 | 2013-05-09 | Honeywell Technologies Sarl, Z.A. | Method for operating a gas burner |
US9134026B2 (en) * | 2011-11-07 | 2015-09-15 | Honeywell Technologies Sarl | Method for operating a gas burner |
Also Published As
Publication number | Publication date |
---|---|
KR20010071151A (ko) | 2001-07-28 |
ES2186419T3 (es) | 2003-05-01 |
DE19824521A1 (de) | 1999-12-09 |
DE19824521B4 (de) | 2004-12-23 |
DE59904050D1 (de) | 2003-02-20 |
DK1084369T3 (da) | 2003-03-03 |
EP1084369B1 (de) | 2003-01-15 |
US6561791B1 (en) | 2003-05-13 |
CA2321659A1 (en) | 1999-12-09 |
JP2002517702A (ja) | 2002-06-18 |
EP1084369A1 (de) | 2001-03-21 |
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