EP 0281823 A3 19881207 - POWER REGULATION DEVICE FOR FUEL-FIRED HEAT PRODUCERS
Title (en)
POWER REGULATION DEVICE FOR FUEL-FIRED HEAT PRODUCERS
Publication
Application
Priority
DE 3707883 A 19870312
Abstract (en)
[origin: EP0281823A2] With a view to optimum fuel utilisation and the reduction of harmful emissions, fuel-fired heat producers must work with a fuel/air ratio to be kept within narrow limits. This optimum ratio can be observed in a heat producer working with constant heating capacity in that a temporally constant quantity of fuel is added to a regulated quantity of air, the flow rate of which is adjusted in the main pipe leading to the burner by means of a blower supplying air. The disadvantage of such a heat producer is that it works with constant heating capacity. There is, however, a requirement for heat producers, the heating capacity of which can be changed, while retaining a very simple regulating device. A change in the heating capacity, while maintaining the optimum fuel/air ratio, can be achieved simply in that, using a heat exchanger (16) arranged in the air pipe (2), the fuel is brought to the same temperature as the air, so that measurement of the flow rates of air and fuel by means of flow sensors (10, 17) in the air pipe (2) and the gas pipe (13) allows an accurate determination of the ratio of gas and air quantities and thus also precise observance of this ratio. Regulation of the heating capacity can then also be achieved simply by changing the quantity of fuel supplied which is matched to the correct air quantity.
IPC 1-7
IPC 8 full level
F23N 1/02 (2006.01); F23N 1/06 (2006.01); F23N 5/18 (2006.01)
CPC (source: EP)
F23N 1/022 (2013.01); F23N 1/06 (2013.01); F23N 2005/181 (2013.01); F23N 2005/185 (2013.01); F23N 2221/06 (2020.01); F23N 2225/08 (2020.01); F23N 2225/13 (2020.01); F23N 2233/04 (2020.01); F23N 2235/16 (2020.01)
Citation (search report)
- [A] EP 0040736 A1 19811202 - SIEMENS AG [DE]
- [A] FR 2407428 A1 19790525 - ZINK CO JOHN [US]
- [A] US 4611984 A 19860916 - NEWMAN RAY L [US], et al
- [A] DE 2613175 A1 19771006 - MASCHF AUGSBURG NUERNBERG AG
- [A] DE 1551779 A1 19701203 - DEGEN JOSEPH
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
DE 3707883 C1 19880721; EP 0281823 A2 19880914; EP 0281823 A3 19881207
DOCDB simple family (application)
DE 3707883 A 19870312; EP 88102494 A 19880220