EP0017057A1 - Dispositif pour le préchauffage du mazout - Google Patents

Dispositif pour le préchauffage du mazout Download PDF

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Publication number
EP0017057A1
EP0017057A1 EP19800101365 EP80101365A EP0017057A1 EP 0017057 A1 EP0017057 A1 EP 0017057A1 EP 19800101365 EP19800101365 EP 19800101365 EP 80101365 A EP80101365 A EP 80101365A EP 0017057 A1 EP0017057 A1 EP 0017057A1
Authority
EP
European Patent Office
Prior art keywords
flat
ptc thermistor
ptc
thermistor elements
channels
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.)
Granted
Application number
EP19800101365
Other languages
German (de)
English (en)
Other versions
EP0017057B1 (fr
Inventor
Werner Eder
Gisbert Fischer
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.)
Danfoss AS
Original Assignee
Meku Metall- und Kunststoffverarbeitungs-Gmbh & Co KG
MEKU METALL KUNSTSTOFF
Danfoss AS
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25778422&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0017057(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19792912000 external-priority patent/DE2912000C2/de
Priority claimed from DE19792930996 external-priority patent/DE2930996A1/de
Application filed by Meku Metall- und Kunststoffverarbeitungs-Gmbh & Co KG, MEKU METALL KUNSTSTOFF, Danfoss AS filed Critical Meku Metall- und Kunststoffverarbeitungs-Gmbh & Co KG
Priority to AT80101365T priority Critical patent/ATE749T1/de
Publication of EP0017057A1 publication Critical patent/EP0017057A1/fr
Application granted granted Critical
Publication of EP0017057B1 publication Critical patent/EP0017057B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/44—Preheating devices; Vaporising devices
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6416—With heating or cooling of the system
    • Y10T137/6606—With electric heating element

Definitions

  • the invention relates to a device for preheating heating oil in front of the nozzle of a burner with a current-carrying PTC element which is in heat-conducting contact with a line leading the heating oil to the nozzle.
  • Small and very small oil burners have considerable advantages for many applications. It is possible with such burners to adapt the heat output to a smaller requirement, such as is the case with floor and room heating systems or the like.
  • the small burner output enables a smaller and therefore cheaper and more space-saving boiler.
  • the thermal insulation of the boiler is cheaper and the boiler temperature regulation can be achieved with fewer burner start-ups, which results in less burner contamination and less environmental pollution.
  • the main problem with low-power oil burners is the small cross-sections of the nozzle channels.
  • the fine nozzle channels lead to poor reproducibility of the oil throughput and often to blockages.
  • an electrical resistance heater to preheat the heating oil.
  • the electrical resistance heater has the disadvantage of requiring a lot of space.
  • An even more serious disadvantage is that an electrical resistance heater can lead to an overheating of the oil above the optimal temperature of, for example, 70 ° -80 ° C., especially when the burner is at a standstill or the flow rate of the oil is reduced. The Overheating can lead to undesirable cracking of the heating oil.
  • German utility model 78 11 098 a current-carrying PTC element is used to preheat the heating oil.
  • the PTC thermistor element has the property of regulating its heating power itself in a known manner. This self-regulation prevents the heating oil from overheating without the need for complex additional control measures.
  • the PTC thermistor element is inserted radially into a heat-conducting metallic sleeve which encloses the line carrying the heating oil.
  • the effectiveness of this preheating device is extremely poor because, on the one hand, the electrical insulation necessary between the cold conductor element and the metallic sleeve also represents a thermal resistance, and on the other hand, because of its large surface area, the metallic sleeve leads to high heat losses.
  • the metallic sleeve has a high thermal capacity, so that the self-regulation of the PTC thermistor element is sluggish and overheating of the heating oil cannot be reliably ruled out.
  • the device attached to the outside of the feed line takes up a considerable amount of space, so that it cannot be used without structural changes to the entire burner.
  • the invention has for its object to improve a device for preheating heating oil of the type mentioned in such a way that preheating takes place with a high degree of efficiency, that the self-regulation of the PTC thermistor element operates practically without delay and that the device integrates space-saving into the nozzle assembly of the burner and can therefore be used without changing the burner structure.
  • At least one plate-shaped PTC element is inserted into the cross section of the nozzle assembly of the burner, that the line carrying the heating oil is designed in the region of the PTC element as at least one flat channel, and that at least one flat side of the PTC element on one Wall of this flat channel with thermal contact is present.
  • the plate-shaped PTC thermistor element sits in the cross-section of the nozzle assembly and the feed line for the heating oil is designed as a channel which lies flat against the entire flat side of the PTC thermistor element.
  • the device can therefore be completely integrated into the nozzle assembly of the burner, only the electrical connection lines of the PTC thermistor element having to be led out of the nozzle assembly. The device therefore makes no changes to the burner structure necessary and can be used in existing burner designs without any problems.
  • the large-area and direct thermal contact between the PTC thermistor element and the heating oil results in optimal preheating efficiency. Since there are no parts with heat capacity between the PTC thermistor element and the heating oil, the self-regulation of the PTC thermistor element is practically instantaneous. The heating oil is therefore always kept at the optimal preheating temperature and overheating is reliably prevented.
  • a safety thermostat is therefore used in addition to the self-regulating effect of the PTC thermistor element, which interrupts the power supply to the PTC thermistor element as soon as the heating oil exceeds the permissible maximum temperature.
  • a control thermostat can also be used, as is done in connection with other types of preheating, e.g. B. by electrical resistance heating, is known per se.
  • Such a control thermostat connected to the burner control circuit closes an electrical contact when a predetermined minimum oil temperature is reached, as a result of which the oil burner can be put into operation.
  • the control thermostat also opens the electrical contact when the temperature falls below the specified minimum oil temperature and shuts down the burner. This prevents the boiler from becoming sooty if the oil temperature is too low.
  • the safety thermostat and the control thermostat are arranged in direct, large-area, heat-conducting contact with the flat channels carrying the heating oil, in which the preheating takes place through the PTC thermistor elements.
  • the safety thermostat and the control thermostat can also be integrated into the cross section of the nozzle assembly and do not change its dimensions which are advantageous for installation.
  • the large-area heat-conducting contact leads to an almost inertia-free determination of the actual heating oil temperature by the thermostats directly at the point at which the heating oil is heated by the PTC thermistor elements.
  • the safety thermostat thus responds to the highest temperature actually reached by the preheating in the entire oil supply line without a major delay. This ensures reliable compliance with the prescribed maximum temperature for the entire oil supply system.
  • the device for preheating heating oil has two metallic connecting pieces 10 and 12, the cross section of which is adapted to the cross section of the nozzle assembly of a burner.
  • the connector 10 has a coaxial receptacle with an internal thread, into which the nozzle rod can be screwed.
  • the connector 12 has a receptacle with an internal thread into which the nozzle of the nozzle assembly can be screwed.
  • Through axial bores of the connecting pieces 10 and 12 serve to supply the heating oil to the nozzle.
  • Two plate-shaped PTC elements 14 are inserted between the connecting pieces 10 and 12.
  • the PTC thermistor elements 14 are arranged with their longitudinal center axis coaxial to the connecting pieces 10 and 12 and thus to the nozzle assembly and axially adjoining one another.
  • the flat edge tubes 16 connect the coaxial bores of the connecting pieces 10 and 12 and serve to supply the heating oil.
  • the width of the flat edge tubes 16 corresponds to the width of the PTC elements 14, so that they. rest on their entire flat side.
  • conductor layers 18 are applied, which serve as a power supply and are connected to a power source via connecting lines.
  • a thin electrically insulating layer 20 is arranged between the conductor layers 18 and the flat edge tubes 16. This insulating layer consists, for example, of thermally sprayed-on aluminum oxide and offers a low thermal resistance.
  • the electrically insulating layer 20 is a layer made of a plastic with high dielectric strength and high heat resistance. Because of the simple production, a film is preferably used. A polyimide film (trade name Kapton) has proven to be particularly suitable. Such a film has a dielectric strength of 280 kV / mm, a heat resistance up to 180 ° C for a short time even up to 275 ° C and a high tensile strength. Adequate electrical insulation can therefore be obtained with a film thickness of 0.1 mm. This low film thickness means low thermal insulation and thus the desired good heat transfer.
  • a current supplied via the conductor layers 18 flows through the thermistor elements 14 and heats them.
  • the oil supplied through the flat edge tubes 16 of the nozzle is heated by the PTC thermistor elements 14, the effect of the PTC thermistor elements 14, which limits current as the temperature rises, has the result that the oil is preheated to a predetermined optimal temperature in a self-regulating manner.
  • the flat-edge tubes 16 themselves can also be used as current leads for the PTC thermistor elements 14.
  • the flat edge tubes 16 only have to be soldered in an electrically conductive manner to the flat sides of the PTC thermistor elements 14. The power connection lines can then be soldered to the flat edge tubes 16.
  • the flat-edge pipes 16 do not come into electrically conductive contact with the metallic connecting pieces 10 and 12 or the nozzle rod or nozzle inserted into them.
  • the flat edge tubes 16 are also covered at both ends by the insulating plastic 22 and are only connected to the bores of the connecting pieces 10 and 12 via bores in this plastic 22.
  • the connecting pieces 10 and 12 are not continuous, but are closed on their mutually facing end faces.
  • the flat edge tubes 16 are inserted into corresponding through bores of these closed end faces of the connecting pieces 10 and 12 and are soldered to them at 26. Since, in this embodiment, the flat edge tubes 16 are in electrically conductive connection with the connecting pieces 10 and 12, current supply to the PTC elements 14 via the flat edge tubes 16 is not possible. Rather, the power supply must always take place via conductor layers 18 which are separated from the flat-edge tubes 16 by insulating layers 20.
  • the connecting pieces 10 and 12 are connected and held together during manufacture by the flat-edge tubes 16 used, so that the pouring of the plastic 22 is simplified.
  • the pushed-on sleeve 24 can be omitted in this embodiment.
  • the power supply. to the PTC element 14 takes place via conductor layers 18, which are protected by an insulating layer 20 against the oil flowing directly past.
  • a pushed-on sleeve 24 is also provided, which essentially serves to fix the connecting pieces 10 and 12 during the plastic molding process.
  • a PTC element 14 is shown in Fig. 7 only a PTC element 14 is shown. As in the previous exemplary embodiments, two or more PTC thermistor elements 14 can of course be arranged axially one after the other. The number of PTC thermistor elements 14 depends essentially on the heating power required, i. H. essentially after the oil flow.
  • a single flat tube 16 is provided, which is arranged with its longitudinal central axis coaxial to the connecting pieces 10 and 12. As in the embodiment of FIGS. 4-6, the flat tube 16 is soldered into corresponding bores in the closed end faces of the connecting pieces 10 and 12.
  • the PTC thermistor elements 14 arranged on the two sides of the flat tube 16 are preferably connected in series. This can be done by an electrical line embedded in the plastic 22, which connects the conductor layers of the PTC thermistor elements 14 facing the flat tube 16.
  • FIGS. 10-12 is particularly suitable for applications where a high heating power is required without the axial length of the device being allowed to be increased.
  • FIGS. 10-12 Further modifications of the embodiment of FIGS. 10-12 are readily apparent.
  • further flat edge tubes 16 can be arranged on the outer flat sides of the PTC thermistor elements 14 in order to enlarge the oil passage cross section.
  • the structure of the embodiment of FIG. 13 basically corresponds to the embodiment of FIG. 4-6.
  • a safety thermostat 29 is placed on the outer flat side of the one flat edge tube 16 facing away from the PTC thermistor elements 14.
  • the safety thermostat 29, the conventional type, for. B. can be a bimetal thermostat, is located on the flat side of the flat tube 16 so that a good heat transfer between the flat tube 16 and the safety thermostat 29 is guaranteed.
  • the safety thermostat 29 is connected in series in the circuit of the PTC thermistor elements 14 and interrupts this circuit as soon as it reaches a predetermined maximum temperature.
  • This specified maximum temperature is somewhat lower than the maximum oil temperature permitted for preheating the heating oil, which is set at 95 ° C according to the safety regulations.
  • This difference between the maximum allowable oil temperature of z. B. 95 ° C and the response temperature of the safety thermostat 29 takes into account the time delay caused by heat capacity and heat conduction, with which the safety thermostat 29 assumes the temperature of the PTC thermistor elements 14.
  • a control thermostat 30 is seated in the same way over a large area.
  • This control thermostat can also be of a conventional type.
  • the control thermostat 30 is connected to the control circuit of the burner and activates it when a predetermined temperature of z. B. 60 ° C so that the burner can be ignited. If the temperature drops below a predetermined value of z. B. from 40 ° C, the control thermostat 30 puts the burner out of operation. This prevents on the one hand an uneconomical ignition of the burner when the oil temperature is too low and on the other hand prevents sooting when the oil temperature is too low while the burner is in operation.
  • the safety thermostat 29 and the control thermostat 30 also fit into the cross section of the connecting pieces 10 and 12 and thus into the cross section of the nozzle assembly.
  • the thermostats 29 and 30 are also cast in the insulating plastic 22.
  • All embodiments have in common that it is a device whose cross-section and thus the outer circumference corresponds to the cross-section and outer circumference of the nozzle assembly, so that this device can be inserted axially into the nozzle assembly without the geometry and dimensions of the nozzle assembly and the burner to change. Furthermore, all embodiments have in common that the oil. with a large heat exchange surface is led directly past the PTC thermistor elements, so that optimum efficiency and low inertia are obtained when preheating the heating oil. Despite the large heat exchange surface, the oil does not come into direct contact with the PTC thermistor elements, so that the oil cannot act chemically on the PTC thermistor material.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Spray-Type Burners (AREA)
EP80101365A 1979-03-27 1980-03-17 Dispositif pour le préchauffage du mazout Expired EP0017057B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80101365T ATE749T1 (de) 1979-03-27 1980-03-17 Vorrichtung zum vorwaermen von heizoel.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2912000 1979-03-27
DE19792912000 DE2912000C2 (de) 1979-03-27 1979-03-27 Vorrichtung zum Vorwärmen von Heizöl vor der Düse eines Brenners
DE19792930996 DE2930996A1 (de) 1979-07-31 1979-07-31 Vorrichtung zum vorwaermen von heizoel vor der duese eines brenners
DE2930996 1979-07-31

Publications (2)

Publication Number Publication Date
EP0017057A1 true EP0017057A1 (fr) 1980-10-15
EP0017057B1 EP0017057B1 (fr) 1982-03-10

Family

ID=25778422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101365A Expired EP0017057B1 (fr) 1979-03-27 1980-03-17 Dispositif pour le préchauffage du mazout

Country Status (4)

Country Link
US (1) US4447706A (fr)
EP (1) EP0017057B1 (fr)
CA (1) CA1149855A (fr)
DK (1) DK149720C (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0101560A2 (fr) * 1982-07-19 1984-02-29 Technar Incorporated Réchauffeur de carburant commandé par thermistance
FR2536508A1 (fr) * 1982-11-24 1984-05-25 Danfoss As Bruleur a gazeification pour carburant liquide, muni d'une zone d'incandescence a la sortie d'une chambre de gazeification
USRE31841E (en) * 1979-05-16 1985-03-05 Danfoss A/S Atomizer burner for oil firing plant
EP0147627A2 (fr) * 1983-11-25 1985-07-10 Reinhard Ursprung Elément de chauffage pour pistolet de pulvérisation
EP0284120A1 (fr) * 1987-02-20 1988-09-28 Texas Instruments Holland B.V. Dispositif de chauffage de carburant, en particulier de gazole
WO1994004872A1 (fr) * 1992-08-17 1994-03-03 Rapa Rausch & Pausch Elektrotechnische Spezialfabrik Gmbh Raccord de gicleur pour bruleur a mazout
FR2749645A1 (fr) * 1996-06-11 1997-12-12 Suntec Ind France Rechauffeur de mazout auto regule
CN1843238B (zh) * 2005-04-06 2011-05-18 豪尼机械制造股份公司 将醋精涂覆到过滤材料带上的方法和装置
DE102010030615A1 (de) * 2010-06-28 2011-12-29 Sgl Carbon Se Verbundwerkstoff, Verfahren zum Herstellen eines Verbundwerkstoffes und Verwendung des Verbundwerkstoffes

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US6253957B1 (en) 1995-11-16 2001-07-03 Nordson Corporation Method and apparatus for dispensing small amounts of liquid material
US6267266B1 (en) 1995-11-16 2001-07-31 Nordson Corporation Non-contact liquid material dispenser having a bellows valve assembly and method for ejecting liquid material onto a substrate
US5747102A (en) * 1995-11-16 1998-05-05 Nordson Corporation Method and apparatus for dispensing small amounts of liquid material
US6109543A (en) * 1996-03-29 2000-08-29 Siemens Automotive Corporation Method of preheating fuel with an internal heater
US6102303A (en) * 1996-03-29 2000-08-15 Siemens Automotive Corporation Fuel injector with internal heater
US5758826A (en) * 1996-03-29 1998-06-02 Siemens Automotive Corporation Fuel injector with internal heater
US5836289A (en) * 1997-06-10 1998-11-17 Southwest Research Institute Porous element fuel vaporizer
TW342342B (en) 1997-09-18 1998-10-11 Interlego Ag A thermoformed toy building plate
US6135360A (en) * 1998-06-01 2000-10-24 Siemens Automotive Corporation Heated tip fuel injector with enhanced heat transfer
US6422481B2 (en) 1998-06-01 2002-07-23 Siemens Automotive Corporation Method of enhancing heat transfer in a heated tip fuel injector
EP1036930B1 (fr) * 1999-03-18 2004-09-22 David + Baader DBK Spezialfabrik Elektrischer Apparate und Heizwiderstände GmbH Dispositif de chauffage pour gazole et système de filtrage de gazole chauffé
DE10347509B4 (de) * 2003-10-13 2006-08-10 Webasto Ag Heizgerät mit einer Zerstäuberdüse
DE102006060314A1 (de) * 2006-12-20 2008-06-26 Robert Bosch Gmbh Vorrichtung zum Befördern fluider Medien bei tiefen Temperaturen
DE102007010958A1 (de) 2007-03-05 2008-09-11 Danfoss A/S Heizölvorwärmer
US9157634B2 (en) * 2011-08-30 2015-10-13 Wacker Neuson Production Americas, LLC Indirect fired heater with inline fuel heater
DE102012008941A1 (de) * 2012-05-08 2013-11-14 Robert Bosch Gmbh Verfahren zur Regulation der Verbrennung von Flüssigbrennstoffen
US10597285B2 (en) 2014-04-18 2020-03-24 Wayne Fueling Systems Llc Devices and methods for heating fuel hoses and nozzles
US11174148B2 (en) * 2014-04-18 2021-11-16 Wayne Fueling Systems Llc Devices and methods for heating fluid dispensers, hoses, and nozzles
DE102014214687A1 (de) * 2014-07-25 2016-01-28 Contitech Techno-Chemie Gmbh Beheizbarer Schlauch
DE102014214690A1 (de) * 2014-07-25 2016-01-28 Contitech Techno-Chemie Gmbh Beheizbarer Schlauch
US10415720B2 (en) * 2015-09-22 2019-09-17 AdelWiggins Group, a Division of Transdigm Inc. Automatic fill system
DE102018204441A1 (de) * 2018-03-22 2019-09-26 Mahle International Gmbh Kraftstoffheizeinrichtung
US11480266B2 (en) * 2019-01-09 2022-10-25 Wisys Technology Foundation, Inc. Water valve heater for firetrucks and the like
US11092358B1 (en) * 2020-02-14 2021-08-17 Eberspächer Catem Gmbh & Co. Kg Electrical heating device

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Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1501866B2 (de) * 1965-06-29 1971-05-13 Landis & Gyr Ag, Zug (Schweiz) Brennoel vorwaermer
AT340030B (de) * 1973-12-24 1977-11-25 Schladitz Hermann J Elektrische heizvorrichtung zum raschen erhitzen oder verdampfen von stromenden medien

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31841E (en) * 1979-05-16 1985-03-05 Danfoss A/S Atomizer burner for oil firing plant
EP0101560A2 (fr) * 1982-07-19 1984-02-29 Technar Incorporated Réchauffeur de carburant commandé par thermistance
EP0101560A3 (fr) * 1982-07-19 1985-01-09 Technar Incorporated Réchauffeur de carburant commandé par thermistance
FR2536508A1 (fr) * 1982-11-24 1984-05-25 Danfoss As Bruleur a gazeification pour carburant liquide, muni d'une zone d'incandescence a la sortie d'une chambre de gazeification
EP0147627A2 (fr) * 1983-11-25 1985-07-10 Reinhard Ursprung Elément de chauffage pour pistolet de pulvérisation
EP0147627A3 (fr) * 1983-11-25 1986-02-19 Reinhard Ursprung Elément de chauffage pour pistolet de pulvérisation
EP0284120A1 (fr) * 1987-02-20 1988-09-28 Texas Instruments Holland B.V. Dispositif de chauffage de carburant, en particulier de gazole
WO1994004872A1 (fr) * 1992-08-17 1994-03-03 Rapa Rausch & Pausch Elektrotechnische Spezialfabrik Gmbh Raccord de gicleur pour bruleur a mazout
US5679276A (en) * 1992-08-17 1997-10-21 Rapa Rausch & Pausch Elektrotechnische Spezialfabrik Gmbh Foil electrical connector for an oil burner nozzle
FR2749645A1 (fr) * 1996-06-11 1997-12-12 Suntec Ind France Rechauffeur de mazout auto regule
EP0814302A1 (fr) * 1996-06-11 1997-12-29 Suntec Industries France (Sa) Réchauffeur de mazout auto-régulé
CN1843238B (zh) * 2005-04-06 2011-05-18 豪尼机械制造股份公司 将醋精涂覆到过滤材料带上的方法和装置
DE102010030615A1 (de) * 2010-06-28 2011-12-29 Sgl Carbon Se Verbundwerkstoff, Verfahren zum Herstellen eines Verbundwerkstoffes und Verwendung des Verbundwerkstoffes

Also Published As

Publication number Publication date
EP0017057B1 (fr) 1982-03-10
US4447706A (en) 1984-05-08
DK129080A (da) 1980-09-28
DK149720B (da) 1986-09-15
CA1149855A (fr) 1983-07-12
DK149720C (da) 1987-06-01

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