WO2019072800A1 - Tankheizung - Google Patents
Tankheizung Download PDFInfo
- Publication number
- WO2019072800A1 WO2019072800A1 PCT/EP2018/077400 EP2018077400W WO2019072800A1 WO 2019072800 A1 WO2019072800 A1 WO 2019072800A1 EP 2018077400 W EP2018077400 W EP 2018077400W WO 2019072800 A1 WO2019072800 A1 WO 2019072800A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spring element
- housing part
- ptc
- tank
- tank heater
- Prior art date
Links
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
- H05B3/20—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/08—Exhaust treating devices having provisions not otherwise provided for for preventing heat loss or temperature drop, using other means than layers of heat-insulating material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2530/00—Selection of materials for tubes, chambers or housings
- F01N2530/18—Plastics material, e.g. polyester resin
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1486—Means to prevent the substance from freezing
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- a tank heater with the features specified in the preamble of claim 1 is known from DE 10 2014 212 544 A1.
- Tank heaters for heating liquids in motor vehicles have a metal housing in which a PTC heater is arranged with a PTC heating resistor and a contact element, and a plastic sheath, which protects the metal housing from contact with liquid.
- a PTC heater is arranged with a PTC heating resistor and a contact element
- a plastic sheath which protects the metal housing from contact with liquid.
- Extruded profiles allow a very good thermal coupling of the PTC heating resistor to the metal housing by simple means by the extruded profile is pressed after the introduction of the PTC heater.
- the possible shapes of the metal housing are limited, which is why increasingly castings for metal housing of tank heaters are used. Castings also allow the use of less expensive alloys, but make it difficult a good thermal coupling of the PTC heater to the metal housing, in particular because no channels or pockets can be produced with low-cost alloys, record the PTC heater and then can be pressed.
- a steel spring plate is used, which is fixed to retaining ribs of the housing part, wherein the retaining ribs are compressed after setting to press the PTC heater with sufficient pressure against a heat transfer surface of a housing part and so make a sufficient thermal contact between PTC heater and metal housing.
- Object of the present invention is to show a way, as in a tank heater whose metal housing is a casting, the heat coupling of the PTC heater can be improved. This object is achieved by a tank heater with the features specified in claim 1. Advantageous developments of the invention are the subject of dependent claims.
- a spring element is attached to the housing part prior to the sheathing, which generates a spring force which presses the PTC heater against the heat transfer surface.
- the spring element is preferably made of an alloy based on aluminum. Aluminum alloys have a good thermal conductivity, so that heat generated by the PTC heater can advantageously also be dissipated via the spring element.
- 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 housing part there is in the latching or Caulking 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.
- the housing part on opposite sides of the heat transfer surface has walls which have an undercut, with which the spring element is hooked.
- the spring element may for example have two strips with latching hooks, between which extends a resilient lid surface. The spring element can thus form part of the housing in this way and allow easy assembly of the housing.
- the spring element is an extruded profile.
- an extruded profile can also be well rounded prior to assembly, so that no more sharp edges are present when encapsulating with plastic.
- the casting may be machined by flattening the heat transfer surface of the housing portion that transfers the heat generated from the PTC heater resistor to the housing portion.
- the housing part is flattened by plastic deformation, for example by pressing a punch. But it is also possible a leveling by a rolling tool. Another possibility is the leveling over a machining such. Milling or grinding.
- the casting can be made for example by die casting, such as an alloy based on aluminum.
- the surfaces of a casting are generally not as flat or smooth as in an extruded profile. By machining the casting, it is therefore possible to achieve improved thermal contact between the PTC heater and the housing part.
- the inventively preferred leveling of the thermal contact surface by pressing a stamp can be carried out with little effort, optionally, the on the Heat contact surface acting punch can be supplemented by a formed to match the opposite surface of the housing part lower punch.
- the PTC heater may include one or more PTC heating elements and one or more contact elements.
- the metal housing is used for electrically contacting the PTC heating element or the PTC heating elements, so that a single contact element, for. B. a contact plate, sufficient.
- PTC heating element (s) and contact element (s) can be held by a plastic frame, which can also support an insulator, which electrically isolates the or one of the contact elements of the metallic housing part.
- the insulator may be, for example, a ceramic plate, such as alumina, or a plastic film. But it is also possible to use two electrically insulated housing parts for electrical contacting of the PTC heating element or the PTC heating elements.
- FIG. 1 shows a sectional view of a tank heater
- FIG. 2 shows the tank heater of FIG. 1 without plastic jacket and spring element
- FIG. 3 shows the spring element of the tank heater shown in FIG. 1;
- FIG. FIG. 4 shows a perspective longitudinal section along the line A - A through the casting of the tank heater shown in FIG. 1;
- FIG. Fig. 5 is a sectional view of another embodiment of a tank heater;
- Fig. 6 is a sectional view of another embodiment of a tank heater
- Fig. 7 shows an embodiment of a housing part for caulking with a spring element
- Fig. 8 shows another embodiment of a tank heater without the plastic jacket.
- the tank heater shown in Fig. 1 in a sectional view includes a PTC heater, which contains at least one PTC heating resistor 1 and in addition, for example, a contact element 2 and an insulator 3 and a plastic frame 4 may have, the various components of the PTC heater holds.
- the PTC heater is pressed by a spring element 5 against a heat transfer surface 66 of the housing part 6, passes over the heat generated by the PTC heating resistor 1 to the housing part 6.
- the PTC resistor 1 lies flat against the heat transfer surface 66 of the housing part, since the PTC resistor 1 is electrically contacted via the housing part 6.
- the PTC heating resistor is electrically insulated on both sides of the housing and is electrically contacted by two contact elements
- another component of the PTC heater can be applied flat against the heat transfer surface 66, such as a ceramic plate or other insulator.
- the housing part 6 is a casting, which has been produced for example by die casting. Before the PTC heater is connected to the housing part 6, the heat transfer surface 66 of the housing part 6 is leveled by plastic deformation, for example by pressing a punch. In this way, the heat coupling of the PTC heater to the housing part 6 is improved.
- the PTC heater is placed on the heat transfer surface 66 and the spring element 5 is clipped onto the housing part 6. Thereafter, the housing part 6 and the spring element 5 and the PTC heater arranged between them are encapsulated with plastic, so that they are then protected by a plastic jacket 7 from contact with a liquid to be heated.
- the housing part 6 has on opposite sides of the heat transfer surface 66 walls 61, which have an undercut, with which the spring element 5 is hooked.
- the undercut can be formed for example by a groove 62 in the respective side wall 61.
- an upper, the undercut forming boundary surface 64 of the groove 62 extends parallel to the heat transfer surface 66 and a lower boundary surface 65 of the groove 62 obliquely to the upper boundary surface of the groove 62.
- the groove 62 so spreads in its longitudinal direction.
- the housing part 6 is easier to remove from its mold. 4
- the hidden cut edges of a longitudinal section through the housing part 2 are shown by dashed lines in a sectional view of the housing part 2, to illustrate this.
- the spring element 5 shown isolated in Fig. 3 is locked to the housing part 6.
- the corresponding positive fit acts perpendicular to the heat transfer surface of the housing part 6.
- the spring element 5 may have two strips 51 with latching hooks 52, which hook with the undercut of the opposite side walls 61 of the housing part 6.
- the boundary surface 64, and / or the contact surface 54, which is in engagement with the delimiting surface, of the latching hooks 52 is advantageously inclined to Heat transfer surface 66 running so that the spring element 5 can remain securely locked.
- a resilient ceiling wall 53 extends, which presses against the PTC heater, for example, against an insulator 3, such as a ceramic plate or plastic.
- the spring element 5 thus has a basically U-shaped configuration.
- the ceiling inner surface 55 at least before mounting a curved towards the center of the PTC heater contour, which is at least the central region of the PTC heater securely entangled with the heat transfer surface 66 and the spring element 5 after entanglement.
- Both the spring element 5 and the housing part 6 may be made of an aluminum-based alloy. While a low-cost standard casting alloy can preferably be used for the casting, the spring element 5 is preferably produced from a spring-hard alloy such as, for example, an AlMgSi alloy.
- the spring element 5 can be produced by extrusion, so be an extruded profile. Unlike a thin steel spring plate, where it is difficult to avoid sharp edges, an aluminum-based alloy spring element can easily have rounded edges. Is the spring element z. B. produced as an extruded part, so the edges after cutting can be such z. B. be reworked by sandblasting that the edges are rounded afterwards. As a result, the danger that the plastic sheath in contact with the edges ruptures at these edges is significantly reduced.
- the housing part 6 may have further walls, for example a rear wall 63 which extends transversely to the opposite side walls 61 which have the undercut.
- a rear wall 63 which extends transversely to the opposite side walls 61 which have the undercut.
- FIG. 5 shows a sectional view of another embodiment of a tank heater, which differs from the embodiment discussed above in the Essentially different by the orientation of the latching hooks 52 of the spring element 5. While in the embodiment of Figures 1 to 4, the latching hooks 52 of the spring element 5 are directed inward and facing each other, the latching hooks are in the embodiment of FIG. 5 directed to the outside and facing away from each other. In order nevertheless to be able to tightly enclose the PTC heater with side walls 61 and a rear wall, the undercuts are not attached to the side walls 61, but to further outer side walls 67.
- FIG. 6 shows a sectional view of another embodiment of a tank heater.
- This embodiment differs from the embodiments described above essentially in that the spring element 5 is fixed by caulking to the housing part 6.
- the housing part 6 protruding pins 8, preferably on the front side of the walls 61. In this case, pass through the pins 8 openings in the spring element 5 and are caulked on the top under bias with a tool such that a positive connection is created.
- only one pin 8 can be seen on each end face.
- the pins 8 may be integrally formed with the housing part 6 or made separately. It is particularly preferred that the pins 8 are arranged laterally offset.
- FIG. 7 an alternative embodiment is shown in which on each side of a single, elongated pin 8 with slightly tapered side surfaces engages through an elongated opening in the spring element. It is also possible, however, a variant of FIG. 8, in which the spring element 5 between the spring element 5 superior rails 9 is inserted and the rails 9 are partially caulked at the edge in such a way that the caulked areas 10 engage over the spring element 5 under bias on the edge and fix it.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112018004569.2T DE112018004569A5 (de) | 2017-10-10 | 2018-10-09 | Tankheizung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017123549.3A DE102017123549A1 (de) | 2017-10-10 | 2017-10-10 | Tankheizung |
DE102017123549.3 | 2017-10-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019072800A1 true WO2019072800A1 (de) | 2019-04-18 |
Family
ID=63896093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2018/077400 WO2019072800A1 (de) | 2017-10-10 | 2018-10-09 | Tankheizung |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102017123549A1 (de) |
WO (1) | WO2019072800A1 (de) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0290159A2 (de) * | 1987-04-21 | 1988-11-09 | TDK Corporation | Heizvorrichtung mit Kaltleiter |
US20020040899A1 (en) * | 2000-10-11 | 2002-04-11 | Chang Kee Hung Daniel | Heat sink for a PTC heating element and a PTC heating member made thereof |
EP2429257A1 (de) * | 2010-09-10 | 2012-03-14 | DBK David + Baader GmbH | Elektrischer Heizer |
EP2637474A1 (de) * | 2012-03-08 | 2013-09-11 | Eberspächer catem GmbH & Co. KG | Wärme erzeugendes Element |
DE112006001103B4 (de) | 2005-07-12 | 2014-08-21 | Eichenauer Heizelemente Gmbh & Co. Kg | Tankheizung |
DE102014212544A1 (de) | 2014-06-30 | 2015-12-31 | Robert Bosch Gmbh | Heizung |
EP3193067A1 (de) * | 2014-09-10 | 2017-07-19 | Nifco Inc. | Fluidrohrvorrichtung |
-
2017
- 2017-10-10 DE DE102017123549.3A patent/DE102017123549A1/de not_active Withdrawn
-
2018
- 2018-10-09 DE DE112018004569.2T patent/DE112018004569A5/de active Pending
- 2018-10-09 WO PCT/EP2018/077400 patent/WO2019072800A1/de active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0290159A2 (de) * | 1987-04-21 | 1988-11-09 | TDK Corporation | Heizvorrichtung mit Kaltleiter |
US20020040899A1 (en) * | 2000-10-11 | 2002-04-11 | Chang Kee Hung Daniel | Heat sink for a PTC heating element and a PTC heating member made thereof |
DE112006001103B4 (de) | 2005-07-12 | 2014-08-21 | Eichenauer Heizelemente Gmbh & Co. Kg | Tankheizung |
EP2429257A1 (de) * | 2010-09-10 | 2012-03-14 | DBK David + Baader GmbH | Elektrischer Heizer |
EP2637474A1 (de) * | 2012-03-08 | 2013-09-11 | Eberspächer catem GmbH & Co. KG | Wärme erzeugendes Element |
DE102014212544A1 (de) | 2014-06-30 | 2015-12-31 | Robert Bosch Gmbh | Heizung |
EP3193067A1 (de) * | 2014-09-10 | 2017-07-19 | Nifco Inc. | Fluidrohrvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE112018004569A5 (de) | 2020-06-18 |
DE102017123549A1 (de) | 2019-04-11 |
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