EP3537849A1 - Chauffage de réservoir - Google Patents

Chauffage de réservoir Download PDF

Info

Publication number
EP3537849A1
EP3537849A1 EP19160974.2A EP19160974A EP3537849A1 EP 3537849 A1 EP3537849 A1 EP 3537849A1 EP 19160974 A EP19160974 A EP 19160974A EP 3537849 A1 EP3537849 A1 EP 3537849A1
Authority
EP
European Patent Office
Prior art keywords
housing part
annular wall
heater according
container
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19160974.2A
Other languages
German (de)
English (en)
Inventor
Roland Starck
Oleg Kexel
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.)
Eichenauer Heizelemente GmbH and Co KG
Original Assignee
Eichenauer Heizelemente 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 Eichenauer Heizelemente GmbH and Co KG filed Critical Eichenauer Heizelemente GmbH and Co KG
Publication of EP3537849A1 publication Critical patent/EP3537849A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • H05B3/78—Heating arrangements specially adapted for immersion heating
    • H05B3/82—Fixedly-mounted immersion heaters
    • 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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/24—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor being self-supporting
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/021—Heaters specially adapted for heating liquids

Definitions

  • a container heater having the features specified in the preamble of claim 1 is known from DE 10 2011 011 367 B4 known.
  • Container heaters in particular tank heaters, for heating liquids in motor vehicles, for example water or other liquids, usually have a metal housing in which a PTC heater with a PTC heating resistor and a contact element is arranged, since metal housing of the PTC heater generated heat can deliver well to a liquid to be heated.
  • the metal case of the DE 10 2011 011 367 B4 known tank heater is provided by powder coating with a plastic jacket.
  • This tank heater is inserted into an opening in a tank and then welded to the surrounding edges of a plastic wall of the tank. Because of the low strength of such a plastic sheath is a reliable welding with a Tank wall problematic and possibly with great effort to realize.
  • Plastic sheaths of greater thickness which are easier to weld to a tank wall, can be made by overmolding the metal housing.
  • the thermal coupling of the PTC heater to the liquid contained in the tank worsens.
  • the object of the present invention is to show a way in which a good heat coupling of the PTC heater to a liquid contained in the container can be combined with a simple mounting of the container heater in the tank in a container heater.
  • a container heater according to the invention has a housing part made of metal, for example a support plate, a PTC heater, which is fixed to the housing part, and a plastic ring wall, which surrounds the PTC heater.
  • the circumference of the ring wall can have any geometric shapes.
  • an excellent thermal coupling to liquid to be heated can be combined with a simple installation in a tank via the metallic housing part. Namely, by the container heater is inserted into an opening of a tank, the edge of a tank wall with the annular wall of the container heater can easily be tightly connected, in particular welded.
  • the thermal coupling of the metallic housing part in the tank to the tank contents is not impaired by the annular wall.
  • the annular wall can for example be made separately as an injection molded part and attached to the housing part, for example by means of rivets. Other fasteners such as bolts or tabs are also conceivable.
  • the annular wall can be liquid-tightly connected to the metallic housing part on one side, preferably its front side, for example by a seal between the housing part and the annular wall sits.
  • a container heater according to the invention can, for. B. be designed as a water heater for heating a pipe, as tank heating or battery container heating.
  • a spring element is attached to improve the heat coupling to the housing part, which generates a spring force that presses the PTC heater against a heat transfer surface of the housing part.
  • the spring element is preferably made of an alloy based on aluminum, for example a spring-hard alloy such as AlMgSi. Aluminum alloys have a good thermal conductivity, so that heat generated by the PTC heater can then advantageously be dissipated via the spring element.
  • the spring element may be produced, for example, as a sheet metal part or as an extruded part.
  • the spring element is latched or caulked to the housing part.
  • the spring element can be attached to the housing part by being clipped onto the housing part.
  • the spring element is fixed by caulking to the housing part, for example by means of fastening devices such as rivets or tabs.
  • fastening devices such as rivets or tabs.
  • such a simple production can be realized.
  • the latching or caulking of the spring element with the housing part less the risk that form metal chips that can cause electrical problems, as in the conventional insertion of a spring plate into a groove.
  • brace spring element and housing part with fastening devices by means of an additional fastening part such as Speednuts or nuts.
  • fastening devices such as rivets are formed integrally with the housing part, which is a easy manufacturing possible.
  • a housing part with integrated pins or projections, which can be used as rivets, can be produced for example by extrusion.
  • Such rivets can be inserted through openings of the spring element and then caulked, so that then the spring element is riveted to the housing part.
  • the spring element is riveted under tension.
  • the housing part of a container heater according to the invention may for example be formed as a plate which carries the PTC heater.
  • a plate which carries the PTC heater.
  • Such a plate can be inexpensively manufactured by extrusion and thereby provided with pin-shaped projections, which can then be used as rivets for fastening the spring element or other components.
  • Extrusion also makes it possible to form on the housing part tabs, heat transfer elements or the like.
  • both the housing part and the heat-emitting element can have almost any shape.
  • the container heater can be flexibly adapted to the geometry and customer requirements. Also conceivable are variants in which the housing part has formed an upstanding wall as a slosh wall or has an all-up wall, so that a partial volume can be delimited in the container.
  • a further advantageous embodiment of the invention provides that the annular wall is made of polyethylene or a polyethylene weldable plastic, so that the annular wall can be welded to a container wall of polyethylene or similar plastic.
  • the annular wall can be advantageously secured by caulking to the metallic housing part, for example by trained as rivets or tabs Projecting projections of the housing part through corresponding openings of the annular wall.
  • the annular wall can alternatively be secured, for example, by screwing, Verclipsen, or bending the projections on the housing part.
  • the annular wall has a voltage applied to the support plate flange portion having openings for riveting corresponding.
  • the annular wall can alternatively be secured, for example, by screwing, Verclipsen, or bending the projections on the housing part.
  • the flange portion may carry a cover which closes an interior containing the PTC heater.
  • the fastening lugs on the housing part also engage through corresponding openings of the cover.
  • additional own fastening lugs on the annular disk engage through openings on the cover and are fixed above the annular disk, in particular hot-caulked.
  • the cover may include a connector for connecting the PTC heater and / or other electrical components, such as the PTC heater. Wear sensors. It when the cover is integrally formed with a connector housing is particularly advantageous.
  • the cover may carry on its side facing away from the housing part a metal washer which has openings for the fasteners such as rivets.
  • the fastening parts may also be surrounded by individual washers.
  • the annular wall can also be integrally formed with such a cover.
  • the annular wall can form a dome. If the cover is formed integrally with the annular wall or no cover is present, so the housing is an open housing, the annular wall can their side facing away from the housing part wear an annular disc made of metal having openings for rivets. The washer then protects the ring wall from damage during riveting.
  • the rivets for fixing the annular wall are at least partially rotationally symmetrical, in particular arranged in a circle with the same distance to their respective neighbors.
  • This design offers a great variability for the arrangement of the ring wall and cover
  • an angled connector housing can be aligned according to customer needs without any structural change.
  • the container heater may include a single or multiple PTC heaters.
  • cover and the connector housing are designed in two parts and are connected to one another via press-fit, welding or engagement. It can be arranged between the cover and the connector housing, a sealing element.
  • a sealing ring may be arranged between the annular wall and the metallic housing part.
  • a sealing ring can also be arranged between the annular wall and the cover. Preferably, both seals are made equal.
  • the housing part and any metallic heat-dissipating element attached to it are preferably made of an aluminum-based alloy and can be protected with a plastic layer before contact with a liquid to be heated, for example by a powder coating or a coating produced by electrophoresis. If a metallic heat-emitting element is attached to the housing part, the plastic layer covers both the housing part and the heat-emitting element.
  • the housing part as well as a possibly attached to him heat-emitting element made of aluminum or an aluminum-based alloy may also be coated with an anodized layer.
  • An anodized layer can also be advantageously used to electrically isolate the housing part from the PTC heater. If the housing part (also) is coated with a plastic layer, this preferably has a recess in which the PTC heater is seated, so that the heat coupling of the PTC heater is affected as little as possible to the metallic housing part.
  • housing part and possibly the heat-emitting element may be partially or completely coated with a lacquer layer.
  • a container heater according to the invention may have a housing that encloses the PTC heater in an interior.
  • the ring wall and the metallic shell are sufficient to protect the PTC heater from the tank contents.
  • a closed housing that surrounds the PTC heater on all sides is then not mandatory. In other words, therefore, the PTC heater can be freely accessible on its side facing away from the metallic housing part, the housing thus being open on this side.
  • the housing part In order to improve the heat release from the housing part to a liquid, it may be advantageous for the housing part to continue to be in contact with a capillary tissue.
  • a capillary tissue e.g. as a mat, fleece or sponge has the advantage that regardless of the Auftaugrad always has a certain amount of liquid heat contact with the housing part and thus with the PTC heater by the liquid bound therein, and the heat absorbed in sloshing movements are passed on to the remaining liquid can.
  • the capillary tissue simultaneously has a filter function. So the liquid z. B. filtered through the filter material before it is sucked through an outlet of the tank.
  • the capillary tissue can be attached by other fastening devices such as rivets on the housing part.
  • other components can be attached by fastening devices on the housing part.
  • the components can be, for example, other identical or different types of heating elements, fluid or electrical lines or channels or sensors.
  • Fig. 1 is schematically shown a tank heater, more precisely a tank heater.
  • the container heater has a metallic housing part 1 in the form of a carrier plate to which an annular wall 2 made of plastic is attached.
  • a cover 3 is fixed, which carries a housing 4 of an electrical connector for connecting the container heater to a power source.
  • the connector housing 4 may be formed integrally with the cover 3.
  • FIG. 2 shows a sectional view of the in FIG. 1 illustrated container heater together with a liquid tank 5, in which it is installed. In the tank, a liquid level 6 is shown schematically.
  • a comparison of Figures 1 and 2 shows that the container heating in FIG. 1 is shown with a view from below.
  • the metallic housing part 1, the annular wall 2 and the cover 3 together enclose a sealed inner space 30, in which a PTC heater 7 is arranged.
  • the container heater is inserted into an opening of the liquid tank 5 and closes it.
  • the annular wall 2 can be welded to the wall of the tank 5.
  • a corresponding weld 24 is in FIG. 2 indicated.
  • the annular wall 2 is also made of plastic, such as polyethylene or a polyethylene weldable plastic. Such plastics can be advantageously used for water tanks in motor vehicles.
  • the heat generated by the PTC heater 7 is discharged via the housing part 1 to the liquid 6 in the tank 5.
  • the housing part 1 designed as a carrier plate extends laterally beyond the annular wall 2.
  • capillary tissue 8 or filter material can be arranged between a wall of the tank 5 and a section of the housing part 1 projecting beyond the annular wall 2.
  • the arrangement of a capillary tissue e.g. as a mat, fleece or sponge has the advantage that regardless of the Auftaugrad always has a certain amount of fluid thermal contact with the housing part 1 and thus with the PTC heater 7 by the liquid bound therein, and the heat absorbed in sloshing the remaining liquid can be passed on.
  • the capillary web 8 particularly preferably has a filter function at the same time. So the liquid 6 z. B. filtered through the Kapillargewebe 8 before it flows out of an outlet 9 of the tank.
  • a sealing ring 10 may be arranged between the metallic housing part 1 and the annular wall 2, for example an O-ring.
  • To receive the sealing ring 10 may be provided in the annular wall 2 and / or the metallic housing part 1 a matching annular groove in which the sealing ring 10 is seated.
  • a sealing ring 11 is also arranged between the cover 3 and the annular wall 2, for example, a flat gasket. Through them, the interior 30 and thus the PTC heater 7 is sealed to the outside. Alternatively, the interior can also be partially or completely potted.
  • the PTC heater 7 includes at least a PTC heating resistor 19 and a contact member, such as a contact plate 21.
  • the PTC heater 7 is supported by a metallic spring member 12 against a heat transfer surface of the Housing part 1 pressed, namely against the inside of the housing part 1.
  • the metallic spring element 12 can be made inexpensively, for example, from sheet metal or extruded part. As FIG. 2 shows, the spring element 12 has a to the center of the PTC heater 7 out bent pressure surface, which presses against the PTC heater 7.
  • the spring element 12 may be latched or caulked to the metallic housing part 1. In the illustrated embodiment, the spring element 12 is caulked by means of rivets to the housing part 1.
  • the housing part 1 has for this purpose pin-like projections which engage through rivets 13 through matching openings of the spring element 12.
  • the metallic housing part 1 may additionally comprise further projections formed as rivets 14 with which the annular wall 2 is fastened to the housing part 1.
  • the integrally formed with the housing part 1 rivets 14 engage through corresponding axially extending openings of the annular wall 2 and the cover 3 therethrough.
  • a metallic annular disc 15, preferably a stainless steel sheet may be provided, which lies outside of the cover 3 and has openings through which the rivet 14 extend through ,
  • the metallic washer 15 can absorb the forces occurring and distribute it over the surface, so that the cover 3 is not damaged.
  • FIG. 2 shows, formed as rivets 14 projections of the metallic housing part 1 can pass through a radially inwardly extending flange portion of the annular wall 2, which carries the cover 3.
  • FIG. 3 shows a modified embodiment of the container heating described above.
  • the metallic housing part 1 is made smaller and does not extend substantially radially outward from the annular wall 2.
  • a heat transfer element 23 is attached to the metallic housing part 1.
  • the heat transfer element 23 may be riveted to the metallic housing part 1.
  • the metallic housing part 1 can for this purpose be formed in one piece with rivets 16 which project through suitable openings of the heat transfer element 23.
  • the advantage of this multi-part design is also the great variability. Thus, almost any desired heat transfer contour can be realized with a single prefabricated heating insert. Only the heat transfer element 23 has to be adapted in each case.
  • a metallic housing part 1 with rivets 13, 14, 16 can be produced inexpensively as extruded part, for example in the form of a support plate. Pin-like projections for the formation of rivets 13, 14, 16 can be produced inexpensively in one piece with the metallic housing part 1 in this way. It is particularly advantageous that the shape of the metallic housing part 1, in particular its underside or outer contour can be adapted with little effort to given requirements as the geometric relationships of a liquid tank.
  • FIG. 4 shows an embodiment of the metallic housing part 1, the rivets 13 for fixing the spring element 12, rivets 14 for fixing the annular wall 2 and on its outer side projections 17 for increasing the surface area and improving the heat dissipation.
  • FIG. 5 shows by way of example another embodiment of the metallic housing part 1, which differs from the in FIG. 4 shown embodiment differs essentially only in that it has instead of the pin-like projections 17 of the base surface bent side walls 18. When installed, these side walls 18 may protrude upward as heat-conducting ribs into the container.
  • FIG. 6 shows the metallic housing part 1 with the PTC heater 7 and the spring element 12.
  • the spring element 12 is secured to the housing part 1 with rivets 13, which are integrally formed with the housing part 1.
  • FIG. 7 shows a view FIG. 6 without the spring element 12.
  • the PTC heater 7 contains a plurality, for example two PTC heating resistors 19.
  • the spring element 12 can have a slot 25 between adjacent PTC heating resistors 19. In this way, the portions of the spring element 12 on both sides of the slot 25 substantially independently exert a spring force on the PTC heating resistors 19 and press them against the housing part 1.
  • the PTC heating resistors 19 can be held by a mounting frame 20, which is also a contact element 21 (see Fig. 2 ), for example, holds a contact plate, which rests flat against the electrical contacting of the PTC heating resistors 19 thereto.
  • the housing part 1 may form one or more stops (not shown) which position the PTC heater 7 and the mounting frame 20 and secure against displacement.
  • the contact plate 21 on a projection 24 which is bent into a hook, in which the mounting frame 20 is hooked for fixing.
  • the contact element 21 is located between the housing part 1 and the PTC heating resistors 19.
  • the contact element 21 may have an extension 21a, to which a ring cable lug 22 (see Fig. 3 ) or another connection element a line (not shown) can be connected to a corresponding contact pin of the connector 4. Via a further ring cable lug 29, which is taken with a rivet 13 of the spring element 12, a second line is connected to a contact pin of the connector 4.
  • the PTC heating resistors 19 are electrically contacted on their side remote from the contact element 21 side of the spring element 12.
  • the housing part 1 is electrically insulated from the contact element 21 by an insulating layer.
  • a suitable insulating layer can be realized inexpensively in a housing part 1 produced from aluminum or an aluminum-based alloy, for example by an anodized layer. This variant is especially advantageous when the entire housing part 1 is provided with an anodized coating as corrosion protection.
  • the housing part 1 as ground contact of the PTC heating resistors 19 and to arrange a contact element 21 on the side facing away from the housing part 1 side of the PTC heating resistors 19 and this contact element then electrically from the spring element 12 and the housing part 1, for example, by interposing a sheet of electrically insulating plastic or ceramic between the contact plate 21 and spring element 12th
  • the housing part 1 and a possibly attached to him heat-emitting element 23 can be inexpensively made of an aluminum-based alloy and protected by an anodized in front of a liquid 6 to be heated. Such Eloxal harsh can cover the housing part both on its inside and on its outside.
  • the metallic housing part 1 and a possibly attached to him heat transfer element 23 may also be coated with a plastic layer.
  • a corresponding plastic layer can be applied, for example, as a powder coating, but a coating produced by electrophoresis is preferred.
  • a plastic coating for example, polyethylene, polypropylene, fluorinated thermoplastics and polyamides, in particular partially aromatic polyamides such as polyphthalamide are suitable.
  • the housing part 1 carries a plastic layer, it may be advantageous to arrange the PTC heater 7 in a recess of the plastic layer, so that the thermal contact between PTC heater 7 and housing part 1 is not affected by the plastic layer.

Landscapes

  • Resistance Heating (AREA)
EP19160974.2A 2018-03-07 2019-03-06 Chauffage de réservoir Withdrawn EP3537849A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018105201.4A DE102018105201A1 (de) 2018-03-07 2018-03-07 Behälterheizung

Publications (1)

Publication Number Publication Date
EP3537849A1 true EP3537849A1 (fr) 2019-09-11

Family

ID=65717862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19160974.2A Withdrawn EP3537849A1 (fr) 2018-03-07 2019-03-06 Chauffage de réservoir

Country Status (2)

Country Link
EP (1) EP3537849A1 (fr)
DE (1) DE102018105201A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3832673A1 (fr) * 2019-12-04 2021-06-09 Eichenauer Heizelemente GmbH & Co. KG Chauffage de réservoir avec élément chauffant ptc

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009103186A1 (fr) * 2008-02-20 2009-08-27 Su Xinjie Système de chauffage électrique avec variabilité du paramètre de température constante
DE102009047647A1 (de) * 2009-12-08 2011-06-09 Robert Bosch Gmbh Heizsystem für einen Tankbehälter
DE102015117456A1 (de) * 2014-10-24 2016-04-28 Denso Corporation Fluidheizvorrichtung
DE102011011367B4 (de) 2011-02-16 2016-06-16 Eichenauer Heizelemente Gmbh & Co. Kg Verfahren zum Herstellen einer Tankheizung
US20170159524A1 (en) * 2014-06-06 2017-06-08 Dbk David + Baader Gmbh Heating module and tank system
WO2018011778A1 (fr) * 2016-07-13 2018-01-18 Oglesby & Butler Research & Development Limited Unité de chauffage à alimentation électrique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009103186A1 (fr) * 2008-02-20 2009-08-27 Su Xinjie Système de chauffage électrique avec variabilité du paramètre de température constante
DE102009047647A1 (de) * 2009-12-08 2011-06-09 Robert Bosch Gmbh Heizsystem für einen Tankbehälter
DE102011011367B4 (de) 2011-02-16 2016-06-16 Eichenauer Heizelemente Gmbh & Co. Kg Verfahren zum Herstellen einer Tankheizung
US20170159524A1 (en) * 2014-06-06 2017-06-08 Dbk David + Baader Gmbh Heating module and tank system
DE102015117456A1 (de) * 2014-10-24 2016-04-28 Denso Corporation Fluidheizvorrichtung
WO2018011778A1 (fr) * 2016-07-13 2018-01-18 Oglesby & Butler Research & Development Limited Unité de chauffage à alimentation électrique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3832673A1 (fr) * 2019-12-04 2021-06-09 Eichenauer Heizelemente GmbH & Co. KG Chauffage de réservoir avec élément chauffant ptc

Also Published As

Publication number Publication date
DE102018105201A1 (de) 2019-09-12

Similar Documents

Publication Publication Date Title
EP3537057B1 (fr) Dispositif de chauffage électrique
EP3592105B1 (fr) Dispositif de chauffage électrique
DE102014015148B4 (de) Ladeverbinder und Verfahren zum Montieren desselben
EP3772867B1 (fr) Dispositif de chauffage électrique et son procédé de fabrication
DE102009058159B4 (de) Filtereinrichtung für Fluide mit einer elektrischen Heizung und Heizung für eine Filtereinrichtung
EP2608633A1 (fr) Elément générateur de chaleur
DE102017209990A1 (de) Elektrische Heizvorrichtung und PTC-Heizelement für eine solche
DE102017102075A1 (de) Rückschlagventil mit Vereisungsschutz
DE102018108407A1 (de) Elektrisches Heizgerät
EP3537849A1 (fr) Chauffage de réservoir
WO1998046457A1 (fr) Dispositif de refroidissement pour module electronique
DE102019204472A1 (de) Wärmeerzeugendes Element und elektrische Heizvorrichtung enthaltend ein solches
DE19846282A1 (de) Beheizbare Wand
WO2018114644A1 (fr) Vanne
WO2011101312A2 (fr) Système de chauffe
EP2331805B1 (fr) Dispositif de filtration pour moteurs à combustion interne
EP3559527B1 (fr) Vanne
DE102011000246A1 (de) Heizeinrichtung
EP3597878B1 (fr) Chauffage de citerne
EP2503844B1 (fr) Dispositif de chauffage électrique
EP2256449A2 (fr) Procédé de fabrication d'une plaque chauffante, radiateur à plaques et écarteur
EP3650778A1 (fr) Chauffe-eau instantané
DE102019125488A1 (de) Vorrichtung zum Beheizen von Blowby Gasen
DE102008031638B4 (de) Im Spritzgussverfahren hergestellte Kunststoffölwanne und Herstellungsverfahren
DE102012017356A1 (de) Metall-harz-kompositbehälter

Legal Events

Date Code Title Description
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

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20200312