EP0384280A2 - Dispositif de chauffage pour des unités mobiles - Google Patents

Dispositif de chauffage pour des unités mobiles Download PDF

Info

Publication number: EP0384280A2
Authority: EP; European Patent Office
Prior art keywords: ignition; switched; combustion air; air blower; motor
Prior art date: 1989-02-23
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.): Granted

Application number

EP90102862A

Other languages

German (de)

English (en)

Other versions

EP0384280A3 (fr

EP0384280B1 (fr

Inventor

Erich Kenner

Peter Reiser

Gerhard Gaysert

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Eberspaecher Climate Control Systems GmbH and Co KG

Original Assignee

J Eberspaecher GmbH and Co KG

Priority date (The priority date 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 date listed.)

1989-02-23

Filing date

1990-02-14

Publication date

1990-08-29

1990-02-14 Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG

1990-08-29 Publication of EP0384280A2 publication Critical patent/EP0384280A2/fr

1991-07-03 Publication of EP0384280A3 publication Critical patent/EP0384280A3/fr

1993-11-24 Application granted granted Critical

1993-11-24 Publication of EP0384280B1 publication Critical patent/EP0384280B1/fr

2010-02-14 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

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
- F23N5/20—Systems for controlling combustion with a time program acting through electrical means, e.g. using time-delay relays
- F23N5/203—Systems for controlling combustion with a time program acting through electrical means, e.g. using time-delay relays 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
- 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
- F23N2227/00—Ignition or checking
- F23N2227/04—Prepurge
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2233/00—Ventilators
- F23N2233/06—Ventilators at the air intake
- F23N2233/08—Ventilators at the air intake with variable speed
- 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 invention relates to a heater for mobile units, e.g. Motor vehicles, with a burner for liquid fuel, which has a combustion air blower with a motor, a mixing device for generating a fuel / air mixture, an ignition electrode arrangement and a combustion chamber, and with a controller for controlling the ignition process.
a heater for mobile units e.g. Motor vehicles
a burner for liquid fuel which has a combustion air blower with a motor, a mixing device for generating a fuel / air mixture, an ignition electrode arrangement and a combustion chamber, and with a controller for controlling the ignition process.
Such heaters are usually used as so-called auxiliary or auxiliary heaters in passenger and truck vehicles and in buses.
the liquid fuel (petrol or diesel oil) is mixed with combustion air using a blower motor and a mixing device and burned in a combustion chamber.
the heat generated in the combustion chamber is dissipated with the help of a heat transfer medium (air or water).
the fuel is atomized using a pressure atomizer.
the fuel is expelled from a fuel nozzle with pressure, and air is directed from the combustion air blower into the area of the nozzle so that the sprayed-out fuel mixes well with the air.
the high air flow rate leads to a good mixing of air and fuel during operation, but has the disadvantage that there are ignition difficulties, especially at high operating voltages in a cold environment.
the object of the invention is to provide a heater of the type mentioned, in which a perfect ignition is guaranteed even at high operating voltages and / or low temperatures.
control system so that the ignition process takes place while the speed of the combustion air blower motor is below the operating speed, switches the engine off and, at the same time or somewhat later, ignites by means of the ignition electrode arrangement.
the invention is particularly effective and interesting in connection with pressure atomizing burners with high-voltage ignition.
the heaters are usually operated in such a way that the combustion air blower is started first after being switched on in order to "pre-flush” the burner.
the invention now provides that the combustion air blower is first switched on for this “pre-purging”, but then switched off again for a first predetermined period of time, i.e. to be de-energized so that the speed decreases steadily when the blower motor runs out. In this phase of constantly decreasing fan speed, the ignition point falls after the fuel supply is switched on.
the composition of the mixture is constantly changing, i.e. it is in an optimal state for ignition at any time. In any case, it is achieved that a mixture which is most suitable for the ignition is present.
the speed of the combustion air blower must be increased again to the value intended for normal operation by re-energizing the blower motor. You can set the time to turn the blower back on so that it is a certain amount of time away from turning the blower off.
the heaters in question have a flame detection device which, in conjunction with the control device of the device, ensures that the ignition process or the operation of the device is stopped, in particular the fuel supply is interrupted if there is no flame for a certain period of time is.
the signal supplied by the flame detection device is used according to the invention to switch the combustion air blower on again after the ignition process.
the heater is thus started by first switching on the combustion air fan after a certain period of time is switched off, then the fuel supply is switched on (a solenoid valve in the fuel line is opened), an ignition voltage is applied to the ignition electrodes, and the signal supplied by the flame detection device causes the combustion air blower to be switched on again.
the engine of the combustion air blower is switched off, and the speed of the blower continuously decreases until the blower is switched on again after flame detection, even if a speed range for a possible ignition is known, after switching on the combustion air blower motor and after its operating speed for stationary operation is reached, the motor is switched off and then switched on and off intermittently a certain time later, so that during the intermittent switching of the blower motor, the fuel supply begins and the ignition is switched on and that after the ignition, the blower motor is continuously energized again.
the ignition timing falls within a range of steady decrease in fan speed
an intermittent operation of the fan motor ensures that the fan operates in a certain range of relatively low speed.
the procedure is such that the intermittent switching on and off is controlled in accordance with two predetermined voltage levels, for which purpose with the blower motor switched off, which then works as a generator because it runs on due to its own inertia, the EMF is detected and compared with the two voltage levels becomes.
the control devices required for this are easy to implement using the control devices already present in such heaters. For example, there is a test circuit which is used to test the function of the blower motor after it has started.
the motor that is started is briefly switched off and the EMF generated by the motor that then works as a generator is recorded during the switch-off time.
This device can also be used to obtain the two voltage levels mentioned for controlling the intermittent switching of the blower motor. Basically, you can also work with a single comparison voltage level to switch the blower motor on again when a minimum level is reached. The motor is switched on in the meantime during predefined fixed time intervals.
the invention is specifically directed to an auxiliary heater with a pressure atomizing burner and high-voltage ignition.
Such devices are generally known and do not need to be explained in more detail here. In the present case, it is specifically about the ignition process.
the motor of the combustion air blower is switched on when the device is switched on. Then the pre-rinse phase follows. From the switch-on time (t0), it takes a certain time until the combustion air blower has reached the nominal speed of, for example, 5000 rpm. At a time t1, the combustion air blower is switched off. The fan continues to run at a steadily decreasing speed. Simultaneously with the switching off of the fan (t 1) or at a certain time t 2 after switching off the combustion air fan, the ignition is switched on, and the solenoid valve contained in the fuel line is opened, so that fuel is supplied to the fuel nozzle. The one out of the nozzle kicking fuel mixes with the combustion air coming from the combustion air blower.
the time interval between t2 and t1 can preferably - as I said - be zero, but it can also be set to a finite value depending on the "ignition speed" to be expected.
the ignition is switched on after the combustion air blower is switched off, e.g. at a speed of 3800 rpm, and the ignition of the fuel / air mixture then takes place at a somewhat lower speed.
Fig. 2 shows the speed curve of the combustion air blower motor in connection with the on and off signals of the engine according to another embodiment of the invention.
the combustion air blower motor After switching off the voltage source, the combustion air blower motor works as a generator and generates an EMF which depends on the respective speed n.
the air flow rate V is approximately proportional to the speed.
the motor is switched off.
the EMF then generated by the blower motor is determined and with a lower smolder lenwert c compared. If the two compared values at time ta are the same, the blower motor is switched on again. A higher threshold value b is reached at time t b , so that the blower motor is switched off again at this time t b .
the speed of the combustion air blower moves between the two values c and b.
the fuel supply is switched on and the ignition electrodes are switched on.
the flame is recognized and the blower motor is again continuously energized.
the determination of the speed or the EMF according to the level b can be omitted, and instead the duty cycle b during which the blower motor is briefly switched on can be determined. Based on empirical values, the value b can be determined in such a way that after this period a speed is reached which corresponds approximately to the value b.

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)
Air-Conditioning For Vehicles (AREA)

EP90102862A 1989-02-23 1990-02-14 Dispositif de chauffage pour des unités mobiles Expired - Lifetime EP0384280B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3905603		1989-02-23
DE3905603A DE3905603A1 (de)	1989-02-23	1989-02-23	Heizgeraet fuer mobile einheiten

Publications (3)

Publication Number	Publication Date
EP0384280A2 true EP0384280A2 (fr)	1990-08-29
EP0384280A3 EP0384280A3 (fr)	1991-07-03
EP0384280B1 EP0384280B1 (fr)	1993-11-24

Family

ID=6374758

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP90102862A Expired - Lifetime EP0384280B1 (fr)	1989-02-23	1990-02-14	Dispositif de chauffage pour des unités mobiles

Country Status (6)

Country	Link
US (1)	US5078317A (fr)
EP (1)	EP0384280B1 (fr)
CA (1)	CA2010851C (fr)
DD (1)	DD292180A5 (fr)
DE (2)	DE3905603A1 (fr)
ES (1)	ES2046551T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19524261A1 (de) *	1995-07-04	1997-01-09	Eberspaecher J	Steuerung der Zündung eines Verdampfungsbrenners
DE19507556B4 (de) *	1994-10-20	2004-12-30	J. Eberspächer GmbH & Co. KG	Verfahren zum Starten eines Brenners für ein Fahrzeugheizgerät oder einen Partikelfilter-Regenerator
DE102007031264A1 (de) *	2007-07-05	2009-01-08	J. Eberspächer GmbH & Co. KG	Verfahren zum Betreiben eines brennstoffbetriebenen Heizgeräts, insbesondere Fahrzeugheizgerät
EP2116771A1 (fr) *	2008-05-09	2009-11-11	Truma Gerätetechnik GmbH & Co. KG	Démarrage et fonctionnement à coefficient d'air optimisé d'un brûleur
EP3054216A1 (fr) *	2015-02-09	2016-08-10	Spheros GmbH	Procede de commande pour le processus d'allumage d'un appareil de chauffage a combustible

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5360335A (en) *	1992-10-22	1994-11-01	Honeywell Inc.	Fuel burner control system with selectable standing pilot mode
US6077068A (en) *	1995-08-31	2000-06-20	Ngk Insulators, Ltd.	Pulsated combustion apparatus and a method for controlling such a pulsated combustion apparatus
KR19980030377A (ko) *	1996-10-29	1998-07-25	배순훈	폭발점화방지를 위한 가스보일러의 착화방법
EP3065960B1 (fr) *	2013-11-08	2019-01-16	Carparts Kliem Thomas	Procédé permettant de faire fonctionner un système de thermorégulation de véhicule
CA3019194A1 (fr)	2016-03-30	2017-10-05	Marine Canada Acquisition Inc.	Appareil de chauffage de vehicule et commandes associees
US10935238B2 (en) *	2018-05-23	2021-03-02	Carrier Corporation	Furnace with premix ultra-low NOx (ULN) burner
DE102020108198A1 (de)	2020-03-25	2021-09-30	Vaillant Gmbh	Verfahren und Vorrichtung zur Verbesserung des Zündverhaltens eines Vormischbrenners
DE102022123906A1 (de) *	2022-09-19	2024-03-21	Vaillant Gmbh	Verfahren zum Betreiben eines Heizgerätes, Computerprogramm, Regel- und Steuergerät, Heizgerät und Verwendung einer zweigeteilten Gaszuführung
CN117190251A (zh) *	2023-09-07	2023-12-08	珠海格力电器股份有限公司	一种鼓风式全预混燃气灶及其点火控制方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2786632A (en) *	1953-11-16	1957-03-26	Honeywell Regulator Co	Control apparatus for forced air furnace
US3221799A (en) *	1964-02-27	1965-12-07	Honeywell Inc	Burner control apparatus
DE1907974A1 (de) *	1969-02-18	1970-09-17	Sueddeutsche Kuehler Behr	Mit fluessigem Brennstoff,insbesondere Benzin,betriebenes Heizgeraet,vorzugsweise Fremdheizgeraet fuer Kraftfahrzeuge
FR2250960A1 (en) *	1973-11-13	1975-06-06	United Gas Industries Ltd	Control system for a fuel burner - has a standby condition with reduced air supply to pilot flame
JPS5538422A (en) *	1978-09-11	1980-03-17	Hitachi Ltd	Control device for burner
DE2931936C2 (de) *	1979-08-07	1985-10-17	Webasto-Werk W. Baier GmbH & Co, 8035 Gauting	Mit fließfähigem Brennstoff betriebene Heizvorrichtung
DE2950689A1 (de) *	1979-12-17	1981-06-25	Servo-Instrument, in Deutschland Alleinvertrieb der BEAB-Regulatoren GmbH u. Co KG, 4050 Mönchengladbach	Regelvorrichtung fuer die verbrennungsluftmenge einer feuerstaette
DE3136792C2 (de) *	1981-09-16	1983-11-24	Webasto-Werk W. Baier GmbH & Co, 8035 Gauting	Verfahren zum Starten und Betreiben eines Heizbrenners, insbesondere für eine Fahrzeugheizung, und Vorrichtung zum Durchführen eines solchen Verfahrens
US4439140A (en) *	1982-03-29	1984-03-27	Honeywell Inc.	Energy saving boiler purge sequence control
US4729207A (en) *	1986-09-17	1988-03-08	Carrier Corporation	Excess air control with dual pressure switches

1989
- 1989-02-23 DE DE3905603A patent/DE3905603A1/de active Granted
1990
- 1990-02-14 DE DE90102862T patent/DE59003566D1/de not_active Expired - Fee Related
- 1990-02-14 ES ES199090102862T patent/ES2046551T3/es not_active Expired - Lifetime
- 1990-02-14 EP EP90102862A patent/EP0384280B1/fr not_active Expired - Lifetime
- 1990-02-20 DD DD90337986A patent/DD292180A5/de unknown
- 1990-02-22 US US07/483,245 patent/US5078317A/en not_active Expired - Lifetime
- 1990-02-23 CA CA002010851A patent/CA2010851C/fr not_active Expired - Fee Related

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19507556B4 (de) *	1994-10-20	2004-12-30	J. Eberspächer GmbH & Co. KG	Verfahren zum Starten eines Brenners für ein Fahrzeugheizgerät oder einen Partikelfilter-Regenerator
DE19524261A1 (de) *	1995-07-04	1997-01-09	Eberspaecher J	Steuerung der Zündung eines Verdampfungsbrenners
DE19524261B4 (de) *	1995-07-04	2006-08-17	J. Eberspächer GmbH & Co. KG	Verfahren zum Starten eines Verdampfungsbrenners
DE102007031264A1 (de) *	2007-07-05	2009-01-08	J. Eberspächer GmbH & Co. KG	Verfahren zum Betreiben eines brennstoffbetriebenen Heizgeräts, insbesondere Fahrzeugheizgerät
DE102007031264B4 (de)	2007-07-05	2018-10-18	Eberspächer Climate Control Systems GmbH & Co. KG	Verfahren zum Betreiben eines brennstoffbetriebenen Heizgeräts, insbesondere Fahrzeugheizgerät
EP2116771A1 (fr) *	2008-05-09	2009-11-11	Truma Gerätetechnik GmbH & Co. KG	Démarrage et fonctionnement à coefficient d'air optimisé d'un brûleur
EP3054216A1 (fr) *	2015-02-09	2016-08-10	Spheros GmbH	Procede de commande pour le processus d'allumage d'un appareil de chauffage a combustible

Also Published As

Publication number	Publication date
EP0384280A3 (fr)	1991-07-03
CA2010851C (fr)	1995-01-03
DE3905603A1 (de)	1990-08-30
DD292180A5 (de)	1991-07-25
DE3905603C2 (fr)	1992-01-02
US5078317A (en)	1992-01-07
EP0384280B1 (fr)	1993-11-24
ES2046551T3 (es)	1994-02-01
CA2010851A1 (fr)	1990-08-23
DE59003566D1 (de)	1994-01-05

Legal Events

Date	Code	Title	Description
1990-07-14	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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1993-10-08	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1993-10-27	ITF	It: translation for a ep patent filed
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1994-11-17	26N	No opposition filed
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 90102862.1
1995-12-22	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19951222 Year of fee payment: 7
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Publication	Publication Date	Title
EP0384280B1 (fr)	1993-11-24	Dispositif de chauffage pour des unités mobiles
DE3248412A1 (de)	1984-07-05	Mit fliessfaehigem brennstoff gespeistes heizgeraet
DE4309218A1 (de)	1993-09-30	Niederspannungs-Vorschaltanordnung für eine Entladungs-Lichtquelle großer Helligkeit
EP0868115B1 (fr)	2003-08-20	Circuit d'amorçage pour lampe HID
DE19605216C2 (de)	2001-11-15	Verfahren zum Betreiben eines Fahrzeugzusatzheizgerätes und Glüheinrichtung
EP0417383A2 (fr)	1991-03-20	Procédé et dispositif de nettoyage d'un filtre à suie
DE1551954B2 (de)	1971-06-16	Steuereinrichtung fuer eine feuerungsanlage
DE2848563C2 (de)	1984-06-28	Einrichtung zur in der Regel ergänzenden Kraftstoffzumessung bei einer Brennkraftmaschine mit Fremdzündung während Sonderbetriebsbedingungen mittels eines elektrisch betätigten Sonderzumeßorgans, insbesondere eines Einspritzventils
DE4309833C2 (de)	1995-04-27	Verfahren und Vorrichtung zum Betrieb einer Brennkraftmaschine oder Feuerungsstätte
EP3054216B1 (fr)	2019-01-02	Procede de commande pour le processus d'allumage d'un appareil de chauffage a combustible
DE69307992T2 (de)	1997-05-22	Schaltung zum Betreiben und zum Ein/Aus Schalten eines Fahrzeugscheinwerfers, die abwechselnd zwei Entladungslampen steuert
DE10312111B4 (de)	2005-06-16	Verfahren zum Zünden eines Ölbrenners und Zündeinrichtung für eine Ölbrenneranordnung
DE3008757A1 (de)	1980-09-18	Fluessigbrennstoff-raumheizvorrichtung und verfahren zum temperaturregeln derselben
DE4142841C2 (de)	1999-12-23	Verfahren zum Starten der Verbrennung eines Brennstoff-Luft-Gemisches in einem Brennraum und Vorrichtung zur Durchführung dieses Verfahrens
EP0614048A1 (fr)	1994-09-07	Dispositif avec un automate à brûleur
DE3110502C2 (de)	1985-08-01	Durchlauferhitzer zur Vorwärmung von viskosem Brennstoff für eine Heizeinrichtung
DE19509797C1 (de)	1996-06-27	Zünd- und Flammenüberwachungseinrichtung für Brenneranlagen
DE4309934C2 (de)	1997-12-04	Verfahren zum Einleiten eines Bennvorgangs
AT405326B (de)	1999-07-26	Verfahren zum getakteten betrieb einer heizeinrichtung
EP0305736B1 (fr)	1995-06-14	Procédé de commande des bougies à incandescence d'un moteur à combustion à allumage par compression
DE3532430C2 (fr)	1990-07-12
EP0718562A2 (fr)	1996-06-26	Appareil de cuisson avec une surface de cuisson en vitro-céramique
DE1278267C2 (de)	1973-10-04	Elektrische schaltungsanordnung einer heizanlage fuer fahrzeuge
DE1932121C3 (de)	1979-01-18	Benzinheizgerät für Kraftfahrzeuge
DE2222916C3 (de)	1976-06-10	Steuergerät für Öl- oder Gasfeuerungen