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WO2004000590A1 - Appareil thermogene a protection anti-surchauffe et procede pour commander cet appareil - Google Patents

Appareil thermogene a protection anti-surchauffe et procede pour commander cet appareil Download PDF

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Publication number
WO2004000590A1
WO2004000590A1 PCT/DE2002/002277 DE0202277W WO2004000590A1 WO 2004000590 A1 WO2004000590 A1 WO 2004000590A1 DE 0202277 W DE0202277 W DE 0202277W WO 2004000590 A1 WO2004000590 A1 WO 2004000590A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
heat transfer
mass flow
generating device
transfer mass
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.)
Ceased
Application number
PCT/DE2002/002277
Other languages
German (de)
English (en)
Inventor
Felix Wolf
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.)
Webasto Thermosysteme GmbH
Original Assignee
Webasto Thermosysteme GmbH
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 Webasto Thermosysteme GmbH filed Critical Webasto Thermosysteme GmbH
Priority to PCT/DE2002/002277 priority Critical patent/WO2004000590A1/fr
Priority to DE10297796T priority patent/DE10297796D2/de
Priority to AU2002319094A priority patent/AU2002319094A1/en
Publication of WO2004000590A1 publication Critical patent/WO2004000590A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2203—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners
    • B60H1/2206—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners controlling the operation of burners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/14—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit
    • B60H1/143—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit the heat being derived from cooling an electric component, e.g. electric motors, electric circuits, fuel cells or batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
    • H01M8/04022—Heating by combustion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2268—Constructional features
    • B60H2001/2284—Fuel supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • the invention relates to a heat-generating device with a reactor having a reaction chamber, a heat exchanger through which heat generated in the reaction chamber can be transferred to a liquid or gaseous heat transfer medium, a wall being provided for separating the interior of the reaction chamber from the heat transfer medium, a conveying device for Conveying the heat transfer medium along the wall and a protective device against overheating of the heat-generating device.
  • the invention also relates to a method for controlling the heat-generating device.
  • a stream of heat transfer medium absorbs the heat energy given off by the reaction chamber to the wall of the heat exchanger and, for example, supplies it to another device which requires preheated air. If the flow of heat transfer medium is limited or interrupted by a user intervention or an error, the heat transfer medium can no longer dissipate the thermal energy that is provided at the heat exchanger. In this case one speaks of a damnation. The temperature of the wall of the heat exchanger then rises rapidly, causing the wall to leak and burn. If this happens, there is no longer a separation between the reaction chamber and the heat transfer medium, so that, in the best case scenario, the device is only destroyed. It can also damage subsequent equipment or leak toxic gases from the reaction chamber.
  • an engine-independent vehicle heater in which, in addition to a flame detector, only one temperature sensor is used as a protective device against overheating.
  • the temperature sensor is on the wall of the heat exchanger.
  • a vehicle auxiliary heater with a heat exchanger in which a temperature sensor is mounted between a combustion chamber and a heat transfer outlet opening in such a way that it also serves as overheating protection and as a flame monitor.
  • Temperature sensors for such applications generally have a resistance that varies depending on the temperature, for example with a PTC characteristic.
  • the disadvantage is that this type of shutdown with a PTC temperature sensor is relatively slow and can only take place at a temperature above the full load temperature of the wall. For example, a full load temperature of 220 ° C is usual, while the switch-off temperature is 250 ° C.
  • the wall may therefore be subjected to high levels of heat, so that it must have a thick wall and further complex design measures are required. Furthermore, additional fuel is consumed until the switch-off temperature is reached, with the result that the efficiency of the heater deteriorates.
  • DE 198 02 906 AI discloses a fuel-operated air heater for motor vehicles with a burner and a heat exchanger, through which hot air is conveyed as a heat carrier by means of a blower.
  • a flame monitor and an overheating sensor are arranged on the burner.
  • the overheating sensor is designed as a non-encapsulated heating air temperature sensor, that is to say it is arranged in the heating air flow without contact with the wall, in particular in the area of the heat exchanger near the blower.
  • the measurement of the temperature of the heating air may be too slow to safely rule out overheating of the wall of the heat exchanger. This is the case because the temperature of the heating air rises very quickly when the heating air is preheated directly on the wall, while it rises more slowly away from the wall, for example at the location of the air temperature sensor.
  • heat-generating devices of the type mentioned are not necessarily heating devices for vehicles.
  • Another heat-generating device is, for example, a reformer of a fuel cell system, which is intended to generate a reformate from a liquid or gaseous fuel and an oxidizing gas, for example air, which can be implemented in a fuel cell.
  • the reforming reaction is usually a partial oxidation, which is exothermic like a conventional combustion, so that there is an excess of heat.
  • the excess heat can be transferred to a liquid or gaseous heat transfer medium by a heat exchanger and be available for further use.
  • One possible use of heated air is to supply it to the reformer as an oxidizing gas, which is particularly advantageous if diesel is to be used as fuel for the reformer.
  • Diesel consists of long-chain molecules that must be broken down into shorter chains before reforming. This can take place in pre-reactions that take place at relatively high temperatures. It is therefore convenient to use a preheated air flow to blow the liquid diesel fuel to mix, resulting in a mixture formation according to the "cold flame” method. The shorter-chain molecules can then be converted to reformate in a favorable manner in the reformer, avoiding coke formation.
  • Another heat-generating device in a fuel cell system is an afterburner, which is used to completely convert anode exhaust gas with oxygen, for example from the cathode exhaust air.
  • the heat generated in the afterburner can also be made available via a heat exchanger for heating a heat transfer stream.
  • Preheating the cathode supply air for the fuel cell is advantageous, for example, since high-temperature fuel cells in particular rely on having a preheated cathode airflow provided.
  • such afterburner can be supplied with additional fuel, so that a significantly higher output can be achieved, which can be used for heating the fuel cell via the cathode supply air flow.
  • the problem also arises in the heat-generating devices in fuel cell systems that the damaging of the heat transfer medium causes the respective device to overheat, which at least leads to damage to the heat-generating device.
  • the invention has for its object to improve a heat-generating device of the type mentioned so that the risk of overheating the heat-generating device is detected more reliably when the heat transfer medium is damned.
  • the protective device of the heat-generating device has a heat transfer mass flow meter, which is arranged in a delivery line for the heat transfer medium.
  • the object is further achieved with a method for controlling such a heat-generating device, in which the protective device determines the mass flow of heat carrier conveyed by the conveyor during operation of the heat-generating device, compares it with a target heat transfer mass flow stored in the protective device, and in the event of a difference between the current heat transfer mass flow and the target heat transfer mass flow, which indicates a risk of overheating of the heat exchanger, regulates the generation of heat by the heat-generating device.
  • the essence of the invention is that to detect a risk of overheating of the heat exchanger, not only temperatures are determined or not, as is the case in the prior art with the measurement of the temperature of the wall of the heat exchanger or of the heat carrier, but that another physical variable , namely the mass flow of the heat transfer medium is determined.
  • the conveying device When the heat carrier inlet or the heat carrier outlet is damned, the conveying device no longer conveys the heat carrier in a sufficiently large quantity through the heat exchanger, so that the heat carrier mass flow becomes zero or almost zero.
  • This reduction in the heat transfer mass flow is detected according to the invention by the protective device and thus the risk of overheating of the heat-generating device is recognized.
  • the reduction in the heat transfer mass flow occurs immediately when damaging, so that the risk of overheating is detected without delay.
  • the heat-generating device according to the invention can therefore be shut down or switched off particularly quickly.
  • Another advantage of the invention is that the wall of the heat exchanger does not have to be heated above the full load temperature. The risk of damage to the wall or other components of the heat-generating device is therefore half eliminated and additional fuel consumption is avoided.
  • the protective device also immediately and reliably detects a failure of the conveying device for the heat transfer medium.
  • the heat transfer mass flow meter is particularly advantageously arranged in the delivery line between the delivery device and the heat exchanger.
  • the heat transfer mass flow meter is particularly easy to mount in this section of the delivery line, since it does not have to be integrated into the heat exchanger.
  • the reaction time of the heat transfer mass flow meter is particularly short if it is arranged on the pressure side of the conveyor.
  • the heat-generating device has a control device which is operationally coupled to the reactor and the heat transfer mass flow meter, and which is set up to compare the detected actual heat transfer mass flow with a target heat transfer mass flow and the reactor as a function of it to control this comparison, in particular to switch off or switch off.
  • the proposed regulation is based solely on an actual-target comparison and can therefore be carried out by the control present in conventional heat-generating devices.
  • a non-volatile memory in which at least one tolerance range is stored for the target heat transfer mass flow, in particular a load state of the heat-generating device is assigned to a full load or at least one partial load. Desired heat transfer mass flow values are preferably stored for each load state of the heat-generating device. As long as the measured heat transfer mass flow and thus the delivery capacity of the conveyor is above the lower limit of the tolerance range, an adequate flow of heat transfer mass through the heat exchanger is ensured. As explained, the heat exchanger is protected against overheating. The upper limit of the tolerance range ensures that the heat transfer mass flow is not excessively large.
  • the heat carrier air and the heat carrier mass flow meter is a hot-wire anemometer.
  • Mass flow meters of this type are already used in motor vehicles, in particular for regulating the combustion in intake lines of internal combustion engines, and are therefore particularly cost-effective in terms of procurement, implementation and maintenance.
  • the hot wire anemometer used with particular preference can be particularly advantageously coupled to a control device of a conventional heat-generating device for vehicles, in that the hot wire anemometer has a hot wire, in particular a PTC hot wire, to which a constant electrical voltage is applied during operation of the heat-generating device and which is cooled by the heat transfer mass flow, whereby its temperature and thus its resistance changes, so that the current intensity through the hot wire flowing current is a measure of the heat transfer mass flow.
  • Heat-generating devices according to the invention are particularly advantageously designed as air heaters, as reformers for a fuel cell system or as afterburner for a fuel cell system.
  • Another important advantage of the reformer is that it requires that a specific lambda window be observed as precisely as possible. This can also be improved by detecting the air mass flow.
  • FIG. 1 shows a fuel cell system in a schematic illustration
  • FIG. 2 shows the reformer of the fuel cell system from FIG. 1 in a more detailed illustration
  • Figure 3 shows a longitudinal section through an air heater and Figure 4 is a schematic representation of a hot wire anemometer used.
  • FIG. 1 shows a fuel cell system which has two heat generating devices according to the invention.
  • this is a reformer 25, on the other hand, an afterburner 26.
  • a fuel for example gasoline or diesel
  • an oxidizing gas for example air.
  • Fuel is fed to the reformer 25 via a pump 18, which is connected to the reformer 25 via a fuel line 12.
  • a blower 7 also delivers combustion air to the reformer 25 via a delivery line 27, which is guided via a heat exchanger 14.
  • the heat exchanger 14 is provided so that the heat generated in the reformer 25 can be used to preheat the oxidizing gas.
  • a valve device is provided between the heat exchanger 14 and the reaction chamber 23 of the reformer 25, through which heated air can also be branched off for other purposes. However, this is not always necessary.
  • the reformate obtained in the reformer 25 is fed to a fuel cell 30 via a reformate line 35.
  • fuel cell is to be interpreted broadly in the context of the present invention, so that it includes both a single fuel cell and an arrangement of several fuel cells, a so-called stack.
  • the reformate is fed in at an anode 31 of the fuel cell 30.
  • the processes taking place in the fuel cell 30 depend on the type of fuel cell used. In any case, an oxygen-containing gas, for example air, must be supplied to the fuel cell 30 at a cathode 33. This is done in FIG. 1 via a delivery line 36.
  • the fuel cell 30 can be supplied with cathode air which has a sufficient temperature.
  • the afterburner 26 is fed by anode exhaust 38 and cathode exhaust 37. These react in a combustion chamber 13 and leave the afterburner 26 as exhaust gas 39.
  • the fuel cell 30 also has an electrolyte 32. Electrical current 34 can be drawn directly from the fuel cell 30.
  • the fans 7 are each followed by mass flow meters 19 which measure the air mass flow in the delivery lines 27 and 36.
  • the mass flow meters 19 are connected to a control unit, which is not shown in FIG. 1 for the sake of clarity, but is designed to control the reformer 25 and the afterburner 26 in such a way that when the delivery lines 27 and 36 are damned, the reforming reaction in the reformer 25 or the burning process in the afterburner 26 is interrupted or reduced in order to protect the heat-generating devices.
  • FIG. 2 shows the reformer 25 in a more detailed, schematic representation.
  • diesel as fuel and air as oxidizing gas are fed to reformer 25 via a fuel line 12 and a delivery line 27.
  • the fuel and the air mix in a mixture formation zone 24 in order to then react in a reaction chamber 23 with the aid of a catalyst, not shown.
  • the catalyst can also be dispensed with when reforming according to the principle of thermal partial oxidation.
  • the reformate can then be removed and fed to the fuel cell 30 via a reformate line 35.
  • a heat exchanger 14 is formed on two walls 16 of the reaction chamber 23, through which the heat generated in the reaction chamber 23 by the reforming reaction is used can be.
  • air is supplied to the heat exchanger 14 by a blower 7, which air will later be used as combustion air for the reformer 25 itself.
  • the air is passed through the heat exchanger 14 where it heats up.
  • a mass flow meter 19 is arranged at the air outlet of the blower 7, which measures the amount of air supplied to the heat exchanger 14 and makes it available to a control unit (not shown) for controlling, for example, the fuel metering pump 18 of the reformer 25.
  • FIG. 3 Another embodiment of a heat-generating device according to the invention is shown in the form of a heater 1 in FIG. 3.
  • the heater shown in Figure 3 is designed as an air heater for a vehicle. Air is used as the heat carrier, which is usually sucked in from the surroundings of the vehicle and is fed to the passenger compartment after heating.
  • a tubular housing 2 has a hot air inlet opening 3 on its left end face and a hot air outlet opening 4 on its opposite right end face.
  • the housing 2 forms a heating air duct 5, in the central region of which the essential components of the heating device 1 for conveying and heating the heating air are arranged in succession on a longitudinal axis 6:
  • a heating air blower 7 as a conveying device for the heating medium heating air, which is driven by an electric motor 8 arranged next to it.
  • the electric motor 8 also drives a combustion air blower 9, which is located next to it, approximately in the center of the heater.
  • the combustion air blower 9 draws combustion air through a combustion air line 10 which passes through the housing 2 and conveys it to a burner 11 arranged next to it.
  • the burner 11 is also supplied with liquid fuel through a fuel line 12, which evaporates in the burner 11 and mixes with the combustion air.
  • the mixture burns in a combustion chamber 13 which is surrounded by a heat exchanger 14.
  • the resulting exhaust gas passes out of the housing 2 through an exhaust gas line 15.
  • the mixture emits thermal energy to a wall 16 of the heat exchanger 14, which separates the combustion chamber 13 from the heating air duct 5 mentioned above.
  • the hot air conveyed through the hot air duct 5 is in turn heated by the wall 16.
  • a control device 17 is also mounted in the area of the electric motor 8, which controls the electric motor 8 and a fuel metering pump 18 arranged outside the housing 2 via lines (not shown in detail).
  • a temperature sensor is attached to the wall 16 as a protective device against overheating of the heat exchanger 14.
  • Such a conventional temperature sensor is shown in dashed lines in FIG. 3 and labeled with the reference number 19a, but is not provided in the heater 1 shown.
  • the heater 1 shown has a hot wire anemometer 19 for protection against overheating, which is arranged radially in the hot air duct 5 between the electric motor 8 and the housing 2.
  • the core of the hot wire anemometer 19 is a hot wire 20, which is freely accessible for the hot air mass flow and extends tangentially to the longitudinal axis 6 in the hot air channel 5.
  • the two ends of the hot wire 20 are each attached to a holder 21 which is attached to the outside of the control unit 17.
  • the holder 21 can be formed in one piece with the housing of the control device 17.
  • Each end of the hot wire 20 is connected by a line, not shown, to a control circuit, also not shown, in the control unit 17.
  • the hot wire anemometer 19 can alternatively be mounted in the heating air duct 5 away from the control unit 17. It is then advantageous to attach it to the side of the electric motor 8 diametrically opposite the control unit 17, where sufficient installation space is available.
  • the hot-wire anemometer 19 is arranged in the flow direction of the heating air directly behind the hot-air blower 7, where fluctuations in the delivery quantity of the hot-air blower 7 can be detected particularly precisely and the hot-wire anemometer 19 is located in the area of the heater "cooled" by the conveyed hot air 1 is located so that it is not exposed to thermal stress and the mass flow measurement is not falsified by thermal influences.
  • the hot-wire anemometer 19 determines the mass flow of the hot air conveyed by the hot air blower 7. The value of the current mass flow is compared in the control unit 17 with a tolerance range for a target mass flow and the burner 11 is readjusted if necessary.
  • the value of the mass flow delivered is within a predetermined tolerance range, depending on the load condition. If the hot air outlet opening 4 is now blocked because a passenger closes the heating in the passenger compartment of the vehicle, the mass flow of hot air that is conveyed is reduced almost suddenly. This reduction in the mass flow is immediately recognized by the hot-wire anemometer 19 without thermal delays or deviations occurring during the measurement.
  • the control unit 17 can therefore very quickly deactivate the burner 11.
  • FIG. 4 illustrates the function of the hot wire anemometer 19 in interaction with the control device 17.
  • the hot wire 20 of the hot wire anemometer 19 the ends of which are each connected to the control device by a line Made from a PTC material, the resistance of which depends on the temperature of the material.
  • a constant voltage U is applied to the two ends of the hot wire 20, so that an electric current with current intensity II flows.
  • the hot wire 20 is heated by the current flow and a certain resistance R1 is established.
  • the hot air mass flow at the hot wire anemometer 19 slows down or is stopped.
  • the hot wire 20 is therefore cooled less or not at all, increases in temperature and its resistance increases. This in turn reduces the current intensity 13 of the current through the hot wire 20, which is recognized by the control unit 17 and compared with corresponding limits of a tolerance range which is assigned to the current load range of the heater 1. If a deviation is determined which indicates the risk of the heat exchanger overheating, the control unit 17 regulates the burner 11 accordingly.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

La présente invention concerne un appareil thermogène comprenant un réacteur (11; 23, 24) qui présente une enceinte de réaction (13; 23), un échangeur thermique (14) à travers lequel la chaleur produite dans l'enceinte de réaction (13; 23) peut être transmise à un agent caloporteur liquide ou gazeux, une paroi (16) séparant l'intérieur de l'enceinte de réaction (13; 23) de l'agent caloporteur, un dispositif de transfert (7) qui permet de transférer l'agent caloporteur le long de la paroi (16), ainsi qu'un dispositif de protection (17, 19) qui protège contre une surchauffe de l'appareil thermogène (1; 25; 26). Cet appareil thermogène est caractérisé en ce que le dispositif de protection (17, 19) présente un système de mesure de débit massique d'agent caloporteur (19) qui est placé dans une conduite de transport (5; 27; 36) pour l'agent caloporteur.
PCT/DE2002/002277 2002-06-20 2002-06-20 Appareil thermogene a protection anti-surchauffe et procede pour commander cet appareil Ceased WO2004000590A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/DE2002/002277 WO2004000590A1 (fr) 2002-06-20 2002-06-20 Appareil thermogene a protection anti-surchauffe et procede pour commander cet appareil
DE10297796T DE10297796D2 (de) 2002-06-20 2002-06-20 Wärmeerzeugendes Gerät mit Überhitzungsschutz und Verfahren zud essen Steuerung
AU2002319094A AU2002319094A1 (en) 2002-06-20 2002-06-20 Heat-generating apparatus comprising an overheat-protecting device and method for controlling said apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2002/002277 WO2004000590A1 (fr) 2002-06-20 2002-06-20 Appareil thermogene a protection anti-surchauffe et procede pour commander cet appareil

Publications (1)

Publication Number Publication Date
WO2004000590A1 true WO2004000590A1 (fr) 2003-12-31

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DE (1) DE10297796D2 (fr)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009044608A1 (de) * 2009-11-20 2011-05-26 Webasto Ag Heizgerät
EP2424021A3 (fr) * 2010-08-25 2014-03-05 Vaillant GmbH Système de pile à combustible

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2973033A (en) * 1957-03-26 1961-02-28 Hupp Corp Fluid burning heaters
DE4447286A1 (de) * 1994-12-30 1996-07-04 Eberspaecher J Fahrzeugheizgerät mit geregeltem Verbrennungsluftgebläse
DE10063922C1 (de) * 2000-12-20 2002-07-18 Webasto Thermosysteme Gmbh Heizgerät, insbesondere Zusatzheizgerät für ein Fahrzeug

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2973033A (en) * 1957-03-26 1961-02-28 Hupp Corp Fluid burning heaters
DE4447286A1 (de) * 1994-12-30 1996-07-04 Eberspaecher J Fahrzeugheizgerät mit geregeltem Verbrennungsluftgebläse
DE10063922C1 (de) * 2000-12-20 2002-07-18 Webasto Thermosysteme Gmbh Heizgerät, insbesondere Zusatzheizgerät für ein Fahrzeug

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009044608A1 (de) * 2009-11-20 2011-05-26 Webasto Ag Heizgerät
EP2502003B1 (fr) * 2009-11-20 2015-08-05 Webasto AG Appareil de chauffage
US9989277B2 (en) 2009-11-20 2018-06-05 Webasto SE Heating device
EP2424021A3 (fr) * 2010-08-25 2014-03-05 Vaillant GmbH Système de pile à combustible

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