EP0384280B1 - Heizgerät für mobile Einheiten - Google Patents

Heizgerät für mobile Einheiten Download PDF

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Publication number
EP0384280B1
EP0384280B1 EP90102862A EP90102862A EP0384280B1 EP 0384280 B1 EP0384280 B1 EP 0384280B1 EP 90102862 A EP90102862 A EP 90102862A EP 90102862 A EP90102862 A EP 90102862A EP 0384280 B1 EP0384280 B1 EP 0384280B1
Authority
EP
European Patent Office
Prior art keywords
ignition
combustion air
fan motor
switched
air fan
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.)
Expired - Lifetime
Application number
EP90102862A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0384280A3 (de
EP0384280A2 (de
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.)
Filing date
Publication date
Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP0384280A2 publication Critical patent/EP0384280A2/de
Publication of EP0384280A3 publication Critical patent/EP0384280A3/de
Application granted granted Critical
Publication of EP0384280B1 publication Critical patent/EP0384280B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 programme acting through electrical means, e.g. using time-delay relays
    • F23N5/203—Systems for controlling combustion with a time programme 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

  • 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.
  • FR-A-2 512 928 it is also known to first switch on the glow plug of the heating burner in a heating burner for vehicle heating in a preheating phase and then to introduce the fuel and the air flow.
  • the air flow is initiated with a time delay compared to the fuel.
  • the air flow is initiated intermittently until the burner has ignited.
  • 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 switches off the combustion air blower motor which is running after the heater has been started up and optionally initiates the ignition process at the same time or with a delay, so that the ignition of the ignitable fuel / air mixture formed by the supplied fuel and the combustion air by the ignition electrode arrangement decreasing fan speed takes place.
  • 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 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 interrupted, in particular the fuel supply is interrupted if there is no flame for a certain 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 up by first switching on the combustion air blower, after a certain period of time without voltage is switched on, then the fuel supply is switched on (a solenoid valve located in the fuel line is opened), an ignition voltage is applied to the ignition electrodes, and the signal provided by the flame detection device causes the combustion air blower to be switched on again.
  • 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.
  • 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.
  • the two voltage levels mentioned can also be obtained 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 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 blower (t 1) or at a certain time t 2 after switching off the combustion air blower, 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 coming out of the nozzle Fuel mixes with the combustion air coming from the combustion air blower.
  • 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.

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 Heizgerät für mobile Einheiten Expired - Lifetime EP0384280B1 (de)

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=6374758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102862A Expired - Lifetime EP0384280B1 (de) 1989-02-23 1990-02-14 Heizgerät für mobile Einheiten

Country Status (6)

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

Families Citing this family (13)

* 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
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
DE19524261B4 (de) * 1995-07-04 2006-08-17 J. Eberspächer GmbH & Co. KG Verfahren zum Starten eines Verdampfungsbrenners
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
DE102007031264B4 (de) * 2007-07-05 2018-10-18 Eberspächer Climate Control Systems GmbH & Co. KG Verfahren zum Betreiben eines brennstoffbetriebenen Heizgeräts, insbesondere Fahrzeugheizgerät
EP2116771B1 (de) * 2008-05-09 2011-08-17 Truma Gerätetechnik GmbH & Co. KG Luftzahloptimierter Start und Betrieb eines Brenners
WO2015067504A1 (de) * 2013-11-08 2015-05-14 Carparts Kliem Thomas Verfahren zum betreiben eines fahrzeugtemperiersystems
PL3054216T3 (pl) * 2015-02-09 2019-05-31 Valeo Thermal Commercial Vehicles Germany GmbH Sposób sterowania przebiegiem funkcji włączania urządzenia grzewczego zasilanego paliwem
WO2017165973A1 (en) 2016-03-30 2017-10-05 Marine Canada Acquisition Inc. Vehicle heater and controls therefor
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

Citations (1)

* 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

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (1)

* 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

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Bd. 11, Nr. 67 (M-566)(2514), 28. Februar 1987;& JP-A-61225547 *
PATENT ABSTRACTS OF JAPAN, Bd. 14, Nr. 416 (M-1021)(4359) 07 September 1990;& JP-A-02 161210 *
PATENT ABSTRACTS OF JAPAN, Bd. 1O, Nr. 316 (P-510)(2372), 28. Oktober 1986;& JP-A-61126453 *

Also Published As

Publication number Publication date
ES2046551T3 (es) 1994-02-01
EP0384280A3 (de) 1991-07-03
DE59003566D1 (de) 1994-01-05
CA2010851C (en) 1995-01-03
DE3905603C2 (enrdf_load_stackoverflow) 1992-01-02
CA2010851A1 (en) 1990-08-23
EP0384280A2 (de) 1990-08-29
DE3905603A1 (de) 1990-08-30
DD292180A5 (de) 1991-07-25
US5078317A (en) 1992-01-07

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