EP1610062A2 - Fahrzeugheizgerät und Verfahren zum Betreiben eines Fahrzeugheizgerätes - Google Patents
Fahrzeugheizgerät und Verfahren zum Betreiben eines Fahrzeugheizgerätes Download PDFInfo
- Publication number
- EP1610062A2 EP1610062A2 EP05008917A EP05008917A EP1610062A2 EP 1610062 A2 EP1610062 A2 EP 1610062A2 EP 05008917 A EP05008917 A EP 05008917A EP 05008917 A EP05008917 A EP 05008917A EP 1610062 A2 EP1610062 A2 EP 1610062A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- combustion
- heater
- combustion zone
- ignition
- 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- Withdrawn
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 75
- 239000000446 fuel Substances 0.000 claims abstract description 72
- 238000012806 monitoring device Methods 0.000 claims abstract description 16
- 238000010304 firing Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000005284 excitation Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 206010053615 Thermal burn Diseases 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—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
- F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements 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
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
- F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/28—Ignition circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/06—Fail safe for flame failures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2241/00—Applications
- F23N2241/14—Vehicle heating, the heat being derived otherwise than from the propulsion plant
Definitions
- the present invention relates to a vehicle heater and a method for operating such a vehicle heater.
- Fuel can be introduced into a combustion zone.
- the one in this Combustion zone introduced fuel is with therein also existing combustion air mixed or is already partly with pre-initiation this mixed and then in the firing zone by appropriate excitation ignited an ignition device.
- the then running in the combustion zone combustion can be monitored by a flame monitoring device become.
- a driving device to be excited various or for the operation of the heater to be activated system areas, such as For example fuel feed arrangement, the ignition device, possibly one additional Heileinspeisungsan angel, driven to the appropriate To be able to trigger operation of the same.
- the drive device the information provided by the flame monitoring device be supplied to the status of combustion in the combustion zone.
- a heater is known in which a detector is present, which is capable of, in a Brennstoffzumoltechnisch trapped air pockets. For example, this points This sensor has a PTC element that, depending on whether it is from air or Fuel is flowed around, changes its electrical resistance and thus a signal indicative of the corresponding flow. In a controller associated with the heater can then, if air pockets be detected in the fuel line, for seizing Countermeasures are taken to ensure inadequate combustion or to prevent a flameout.
- DE 102 08 634 A1 discloses a heater in which in a Fuel supply line, a pressure sensor is provided to air pockets or to detect gas bubbles in the supplied fuel.
- this object is achieved by a method for operating a heater, in particular vehicle heater, which Vehicle heater is a combustion zone, a fuel feed arrangement for feeding fuel into the burning zone, an ignition device and a flame monitoring device, in which method then when in the heating mode of the heater, the flame monitoring device canceling or imminent burning off indexed, the ignition device for igniting the fed into the combustion zone Fuel is controlled.
- the running in the combustion zone combustion supervised Will in a state in which the heater is operated and therefore basically the fuel feed arrangement is operated to promote fuel towards the combustion zone, recognized, that the flame is extinguished, according to the invention immediately by exciting the ignition again ensured that the combustion is stabilized.
- the risk of failure of the heater or a significant Declining the heating power of such a heater can thus be eliminated.
- the Brennscherinspeisungsan extract a fuel pump and a Brennstoffzerstäubungs include.
- a Fuel atomizing device are triggered by air bubbles Problems particularly critical, because then already a very short-term Interruption of the fuel feed to such depletion of the fuel present in the combustion zone can ensure that immediately Combustion stops.
- the flame monitoring device can, for example, a brightness sensor and / or include a temperature sensor.
- the ignition device is designed to generate a spark is.
- this heater is generally designated 10.
- the heater 10 includes a mixing device 12 which is substantially pot-shaped is and the combustion zone 14 is formed. Subsequently to the firing zone 14 a flame tube 18 is provided. It should be noted that this Structure of the mixing device 12 only by way of example for a variety of different Variation options is available.
- Fuel feed arrangement becomes liquid fuel of one Fuel reservoir 22 directed toward the combustion zone 14.
- These Fuel feed assembly 20 includes a fuel pump 24, which directs the fuel toward an atomizer nozzle 26. In this atomizer 26 is possibly also using the at least Part in this introduced combustion air, the fuel is atomized and in Form of a fine fuel dust fed into the combustion zone 14. This fine fuel dust eventually mixes with the fuel zone 14 parallel conducted air and can then already running combustion to be burned.
- an ignition device 28 is also present. This can be designed in the manner of a Glühzündorgans that when energized provides heat through the existing electrical resistance and thus locally required to start the combustion high Temperatures provides. However, especially with atomizer burners can the ignition device 28 also designed to generate a spark be, with appropriate excitation by such a spark also provide locally very high temperatures in a very short time to be able to.
- Both the fuel pump 24, as well as the ignition device 28 are under the control of a drive device 30. This gives corresponding control signals to the system areas to be controlled by it, for example in the form of a voltage to be applied to the Operation of the heater 10 in the desired manner to be able to. Of course, other system areas, such as a combustion air blower 32, from the driver 30 are controlled.
- the heater 10 further includes a flame monitor 34 provided, which includes, for example, a brightness sensor 36.
- a brightness sensor 36 is provided in the region of the firing zone 14, which may be positioned such that he can supply appropriate sensor signals in the course of combustion, which ultimately allow a conclusion on the combustion status. These sensor signals are fed to the drive device 30.
- One such brightness sensor can be configured for example as a phototransistor be dependent on the expiring combustion and the corresponding brightness in the firing zone 14 corresponding Signals.
- This sensor is preferably positioned so that it visually observe the region of the combustion zone 14 well, however, however from the prevailing in the combustion zone 14 high temperatures is largely not acted upon.
- a temperature sensor can be used for information about the status of the incineration.
- a changing one Combustion for example, a decreasing combustion
- Changes in temperature which are then caused by such Temperature sensor can be detected. Due to the lower
- detection inertia is the use of a brightness sensor, in general also referred to as flicker sensor, preferred. Is the combustion stable, so the Flackeranteil the combustion is uniform.
- the Flackeranteil is zero. This Cancel the combustion or a change in the status of the combustion however, is detected by the sensor 36. So the flicker part sinks below a defined threshold detected by the sensor 36 is, so can be detected in the drive device 30 that then, when the fuel pump 24 for operating the heater 10 in Heating is controlled and thus fuel in the direction Burning zone 14 should be routed, probably no combustion More will take place or the combustion is extinguished. Because this, how preceded by air pockets and short-term As a result, the fuel supply can be triggered controls the Control device 30, the ignition device 28 to energize this and in the combustion zone 14 again to provide sufficiently high temperatures, to restart or sustain combustion.
- Threshold Is the Flicker share almost zero or below a second defined Threshold, it can be provided that the ignition device is no longer is controlled, but the fuel supply is terminated immediately, otherwise Popping noise and smoke development can occur.
- the duration between falling below the first threshold and falling below the second threshold can be done very quickly. That's why it can be of particular advantage when the ignition device 28 a spark can generate, since then from the detection of flame arrest to the Provide the high temperatures required for ignition only one very short period of time elapses.
- the excitation of the ignition element 28 then leads to the stabilization of the Combustion, this is also recognized by the sensor 36 immediately or for the drive device 30 from the sensor signals of the sensor 36 be recognizable. It can then set the excitation of the ignition device 28 again become. Otherwise, the drive device 30 can continue, the Ignition member 28 to ignite, until the actually stabilized combustion has been detected or until a predetermined maximum operating period for the ignition device 28 is reached. Can after several times or prolonged attempt to stabilize the combustion, the Flicker share still not lifted above the first threshold may be an indication that may not be Fuel is more in the fuel reservoir 22 is present. It can then, for example a corresponding warning will be generated.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
- eine Brennstoffeinspeisungsanordnung zum Einspeisen von Brennstoff in eine Brennzone,
- ein Zündorgan zum Zünden von in der Brennzone eingespeistem Brennstoff,
- eine Flammüberwachungseinrichtung zum Überwachen der in der Brennzone ablaufenden Verbrennung,
- eine Ansteuervorrichtung, welche zum Betreiben des Heizgerätes die Brennstoffeinspeisungsanordnung und das Zündorgan ansteuert und welcher von der Flammüberwachungseinrichtung den Verbrennungszustand in der Brennzone indizierende Information zuleitbar ist,
Claims (5)
- Verfahren zum Betreiben eines Heizgerätes insbesondere Fahrzeugheizgerätes, welches Fahrzeugheizgerät (10) eine Brennzone (14), eine Brennstoffeinspeisungsanordnung (20) zum Einspeisen von Brennstoff in die Brennzone (14), ein Zündorgan (28) sowie eine Flammüberwachungseinrichtung (34) aufweist, bei welchem Verfahren dann, wenn im Heizbetrieb des Heizgerätes (10) die Flammüberwachungseinrichtung (34) das Abbrechen oder das bevorstehende Abbrechen der Verbrennung indiziert, das Zündorgan (28) zum Zünden des in die Brennzone (14) eingespeisten Brennstoffs angesteuert wird.
- Fahrzeugheizgerät, umfassend:wobei die Ansteuervorrichtung (30) dazu ausgebildet ist, dann, wenn bei im Heizbetrieb zu betreibendem Heizgerät (10) die Brennstoffeinspeisungsanordnung (20) zum Einspeisen von Brennstoff in die Brennzone (14) angesteuert wird und die von der Flammüberwachungseinrichtung (34) gelieferte Information auf ein Abbrechen oder das bevorstehende Abbrechen der Verbrennung hindeutet, das Zündorgan (28) zum Zünden des in die Brennzone (14) eingespeisten Brennstoffs anzusteuern.eine Brennstoffeinspeisungsanordnung (20) zum Einspeisen von Brennstoff in eine Brennzone (14),ein Zündorgan (28) zum Zünden von in die Brennzone (14) eingespeistem Brennstoff,eine Flammüberwachungseinrichtung (34) zum Überwachen der in der Brennzone (14) ablaufenden Verbrennung,eine Ansteuervorrichtung (30), welche zum Betreiben des Heizgerätes (10) die Brennstoffeinspeisungsanordnung (20) und das Zündorgan (28) ansteuert und welcher von der Flammüberwachungseinrichtung (34) den Verbrennungszustand in der Brennzone (14) indizierende Information zuleitbar ist,
- Fahrzeugheizgerät nach Anspruch 2,
dadurch gekennzeichnet, dass die Brennstoffeinspeisungsanordnung (20) eine Brennstoffpumpe (24) und eine Brennstoffzerstäubungseinrichtung (26) umfasst. - Fahrzeugheizgerät nach Anspruch 2 oder 3,
dadurch gekennzeichnet, dass die Flammüberwachungseinrichtung (34) einen Helligkeitsfühler (36) oder/und einen Temperaturfühler (36) umfasst. - Fahrzeugheizgerät nach einem der Ansprüche 2 bis 4,
dadurch gekennzeichnet, dass das Zündorgan (28) zum Erzeugen eines Zündfunken ausgebildet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004030874 | 2004-06-25 | ||
| DE102004030874A DE102004030874A1 (de) | 2004-06-25 | 2004-06-25 | Fahrzeugheizgerät und Verfahren zum Betreiben eines Fahrzeugheizgerätes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1610062A2 true EP1610062A2 (de) | 2005-12-28 |
| EP1610062A3 EP1610062A3 (de) | 2008-03-26 |
Family
ID=34979926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05008917A Withdrawn EP1610062A3 (de) | 2004-06-25 | 2005-04-22 | Fahrzeugheizgerät und Verfahren zum Betreiben eines Fahrzeugheizgerätes |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1610062A3 (de) |
| DE (1) | DE102004030874A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012168068A3 (de) * | 2011-06-10 | 2013-07-04 | Webasto Ag | Fahrzeugheizgerät und verfahren zum betreiben eines fahrzeugheizgerätes |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011003718B4 (de) * | 2011-02-07 | 2021-05-20 | Eberspächer Climate Control Systems GmbH | Verfahren zum Betreiben eines Heizsystems, insbesondere für ein elektromotorisch betriebenes Fahrzeug |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10208634A1 (de) | 2001-05-11 | 2003-09-25 | Webasto Thermosysteme Gmbh | Fahrzeug-Heizgerät mit einem Gasblasendetektor |
| DE10240208A1 (de) | 2002-06-25 | 2004-01-22 | Webasto Thermosysteme International Gmbh | Heizgerät mit einem Detektor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3536153A1 (de) * | 1985-10-10 | 1987-04-16 | Webasto Werk Baier Kg W | Anschlussvorrichtung zur stromversorgung |
| JPH01114618A (ja) * | 1987-10-29 | 1989-05-08 | Matsushita Electric Ind Co Ltd | 加熱装置 |
| US5269458A (en) * | 1993-01-14 | 1993-12-14 | David Sol | Furnace monitoring and thermostat cycling system for recreational vehicles and marine vessels |
| DE19548226A1 (de) * | 1995-12-22 | 1997-06-26 | Eberspaecher J | Brennstoffbetriebenes Heizgerät, insbesondere Zuheizer für ein Kraftfahrzeug |
| DE19903305C5 (de) * | 1999-01-28 | 2012-01-26 | Webasto Ag | Verfahren zur Flammüberwachung in einem Fahrzeugheizgerät |
| US7270098B2 (en) * | 2002-07-15 | 2007-09-18 | Teleflex Canada Inc. | Vehicle heater and controls therefor |
-
2004
- 2004-06-25 DE DE102004030874A patent/DE102004030874A1/de not_active Withdrawn
-
2005
- 2005-04-22 EP EP05008917A patent/EP1610062A3/de not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10208634A1 (de) | 2001-05-11 | 2003-09-25 | Webasto Thermosysteme Gmbh | Fahrzeug-Heizgerät mit einem Gasblasendetektor |
| DE10240208A1 (de) | 2002-06-25 | 2004-01-22 | Webasto Thermosysteme International Gmbh | Heizgerät mit einem Detektor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012168068A3 (de) * | 2011-06-10 | 2013-07-04 | Webasto Ag | Fahrzeugheizgerät und verfahren zum betreiben eines fahrzeugheizgerätes |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004030874A1 (de) | 2006-01-12 |
| EP1610062A3 (de) | 2008-03-26 |
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