EP1507126A2 - Vorrichtung zum Erwärmen von Gasströmen und Heizlamelle einer solchen Vorrichtung - Google Patents
Vorrichtung zum Erwärmen von Gasströmen und Heizlamelle einer solchen Vorrichtung Download PDFInfo
- Publication number
- EP1507126A2 EP1507126A2 EP04018860A EP04018860A EP1507126A2 EP 1507126 A2 EP1507126 A2 EP 1507126A2 EP 04018860 A EP04018860 A EP 04018860A EP 04018860 A EP04018860 A EP 04018860A EP 1507126 A2 EP1507126 A2 EP 1507126A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamellae
- embossments
- gas
- slats
- heated
- 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
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 31
- 238000004049 embossing Methods 0.000 claims abstract description 14
- 241000446313 Lamella Species 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 241000761557 Lamina Species 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 51
- 238000012546 transfer Methods 0.000 description 19
- 230000015572 biosynthetic process Effects 0.000 description 6
- 210000002414 leg Anatomy 0.000 description 6
- 238000012549 training Methods 0.000 description 5
- 238000010408 sweeping Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 229920006097 Ultramide® Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/12—Fastening; Joining by methods involving deformation of the elements
- F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching
Definitions
- the invention relates to a device for heating Gas streams, in particular for heating interior spaces, such as of motor vehicles, for heating the intake air of engines or the like, with at least one substantially tubular heating unit with arranged on this Fins for heat dissipation to the gas to be heated, in particular Air. It is also on a lamella of such Device directed.
- waste gas heat exchangers For heating the passenger compartment of motor vehicles it is known, using waste gas heat exchangers, the waste heat to use the drive motor.
- the disadvantage here is that especially at low ambient temperatures the Warming up the interior or the passenger compartment with significant delay occurs after several minutes, which is for, the inmates are extremely uncomfortable.
- modern engines have a higher efficiency, so that they generate less waste heat, which is used to heat the Interior of the vehicle in the cold, not more sufficient.
- DE 198 48 169 A1 describes a generic device for the heating of interiors, in particular of Motor vehicles.
- the device has a plurality of for dissipating heat to the gas to be heated lamellae on which in a parallel arrangement on a heated Heating unit in the form of one or more parallel profile tubes, in particular square tubes, sit clamped, with the square tubes or the one or more recesses of the slats push through.
- a heated Heating unit in the form of one or more parallel profile tubes, in particular square tubes, sit clamped, with the square tubes or the one or more recesses of the slats push through.
- For improved heat transfer between the Square tubes and the slats is provided, which the Square tubes facing edges of the openings of the slats forming tubes in contact with each other Turn tabs out of the slat plane.
- the slats at their heat to be heated to the Gas serving areas extending in the longitudinal direction the fins radially away from the tubes or between them extend, with bent out of the lamellar plane Clamps equipped, which at the adjacent one Slat elastic come to rest and the arrangement thus stabilize a large number of slats next to one another.
- the slats - in the longitudinal direction the same considered - the side of the breakthroughs arranged and extending in the longitudinal direction of the slats Beading on which the clamping seat of the slats Stabilize the square tubes.
- the task is based, in a device of the above mentioned type or in a lamella of such a device for improved heat transfer and at the same time for to provide increased dimensional stability of the slats.
- this object is achieved in a device of the type mentioned solved in that the slats are provided with embossments, which of the lamellar plane protrude.
- the invention also provides a lamella for such a heater before that they provided with embossments, which of the lamellar plane protrude.
- Due to the embodiment of the invention is on the one hand a considerably improved over the prior art Heat transfer to the gas to be heated, in particular air, ensured by the imprints on the one hand the Heat exchange surface is increased, on the other hand in particular generates local turbulence of the gas stream to be heated which are favorable for the heat transfer are. It is also possible, in particular, for a flow velocity, which in a conventional - level - Formation of the slats to a laminar flow leads to achieve a turbulent flow, so that the Formation of a substantially constant temperature gradient the gas flow in the area of the surface of the slats prevents and driving the heat transfer temperature difference between lamella and gas flow as a result of Turbulence in the area of the fin surface is increased.
- the turbulence of the gas stream also its contact time with the lamellar surface and thus the increases the heat transfer available residence time.
- the embossings according to the invention confer the lamella increased dimensional stability, so on the one hand Noise of the heater as it is under the action of Vibrations can occur, reliably prevented.
- the embossments are at least at the serving for heat dissipation to the gas to be heated Area of the slats, which extends in the longitudinal direction of the slats substantially radially of the at least one tube stretches away, arranged to be there for a flawless Heat transfer to provide the gas to be heated.
- the fins are preferably clamping on the outside arranged of the tube, as it is quoted from the above DE 198 48 169 A1 is known.
- a plurality of in Flow direction of the gas to be heated in a row arranged slats may be provided, in particular successively arranged rows of embossments of the slats can be provided.
- This particular in rows arranged embossments may preferably in the flow direction to be arranged offset of the gas to be heated.
- the embossing the fins one in the flow direction of the to be heated Gases steep rise and a flatter contrast Have waste.
- the angle of the rise of the imprints against the Slat surface preferably between about 45 ° and about 90 °, in particular between about 60 ° and about 90 °, e.g.
- the angle can be the waste of the imprints against the lamellar surface preferably between about 1 ° and about 45 °, in particular between about 1 ° and about 30 °, e.g. between about 5 ° and about 20 °, amount.
- a preferred embodiment provides that the imprints the lamellae formed substantially round or polygonal are, for example, quadrangular, in particular essentially trapezoidal or rectangular could be.
- embossments the lamellae formed substantially V-shaped are, with the top of the "V" of the substantially V-shaped Embossing of the lamellae with advantage against the oncoming, can be arranged to be heated gas. Also through such trained lamellae can be on the one hand Create turbulence of the gas stream, on the other hand act the V-shaped embossments in the lamellar plane in the manner of Baffles, so that the inflowing gas from its direction of flow deflected outwards along the thighs of the "V" and the contact time of the gas flow at the surface the fins is increased.
- the legs of the "V" of the substantially V-shaped embossments can either have an approximately linear extension direction or also an approximately circular or elliptical segment-shaped Have extension direction, wherein at the latter alternative advantageously one of the direction of flow of the gas considered convex curvature have to divert the gas flow such that a As long as possible contact time with the lamellar surface results.
- the opening angle of the "V" of the direction of flow to be heated Gas successively arranged V-shaped embossments of Slats in the direction of flow of the gas increases, so that one each of the V-shaped embossments for further deflection the gas flow and thus at the same time for effective turbulence of the same worries.
- embossing depending on the application, can also be designed differently, for example, in the manner of rectilinear and / or curved Stegen, which is particularly useful if the Slats passing gas flow is to undergo a diversion, as in particular in curved air ducts Of motor vehicles is often the case.
- the invention in a generic device, in which the slats are clamped on the outside of the Pipe are arranged, further, that the slats at least surrounding a designed as a profile tube tube Have breakthrough and at least two opposite Edges of the openings under formation of the Lamellar plane bent out tabs are bent, wherein the opposite edges through substantially perpendicular interrupted slots arranged for the breakthrough are, so that a plurality of in the extension direction of the Edges edges arranged side by side is formed.
- Such an embodiment is particularly advantageous, if the profile tube, on which the lamella clamped sit up, clamped in the interior of the pipe PTC elements or similar, jammed devices is heated, since in this case a subsequent Expansion of the equipped with the seated slats Tube for achieving an improved clamping seat of the slats on the outside of the tube to loosen the in Lead inside the pipe clamped heaters would and thus excretes.
- the inventive training the slotted lugs of the slats makes in any case such expansion of the tube dispensable and ensures perfect heat conduction between the profile tube and the outside clamped Lamellae.
- tubular heating unit relatively flat profile tube with substantially rectangular cross-section used, so in particular also the two opposite longitudinal edges of Breakthroughs of the slats by the substantially vertical interrupted slots arranged for the breakthrough while the two other opposite transverse edges the openings of the slats formed continuously are.
- the breakthroughs each have at least one further imprint , wherein the further embossments with advantage in Shape of parallel to the longitudinal direction of the lamellae arranged beads may be formed, as it is made the initially cited DE 198 48 169 A1 known per se is.
- the Clamping tabs on at least two opposite ends of Slats are arranged, in particular of at least a part of the bent out of the lamellar plane Cross edges of the slats can be formed.
- the slats and optionally the tubular heating unit Conveniently consist of a material with good Thermal conductivity, such as a metal sheet, preferably made of aluminum or an aluminum alloy.
- the heater shown in Fig. 1 according to the invention in the illustrated embodiment, two in the drawing plane successively arranged tubular heating units in the form of profile tubes 2, of which in Fig. 1, only the front profile tube 2 is visible.
- each of the profile tubes 2 integrally formed in the form of a square tube and inside, e.g. with a not shown in Fig. 2
- Heating device in the form of resistance elements provided with a mounting frame made of insulating material, like polyamide (Ultramid®, BASF AG), several plate-shaped PTC elements included in the mounting frame are arranged one over the entire mounting frame extending contact track and the contact track covering Insulating plate include (also not shown).
- the mounting frame can otherwise according to the Mounting frame according to DE 198 48 169 A1 be formed.
- the PTC elements used for heating which are familiar as such, for example according to the EP 0 379 873 B1.
- the edges are the designed as a square tubes profile tubes 2 respectively rounded. This does not only apply to the outer edges 3, but also for the edges arranged inside 4.
- the height h of the profile tubes 2 changes over its width b, with the lowest height about in the Center is reached. These height changes are only slightly and are in the range of about 0.4 mm. Because the Height of the longitudinal leg 5 of the profile tubes 2 substantially is constant, the same applies to the inner diameter the profile tubes 2.
- the profile tubes 2 therefore have at Inside 6 of their longitudinal legs 5 a spherical training or a concave shape, whereby an excellent Clamping arranged in the interior of the profile tubes 2 and for heating the same serving PTC elements (not shown) in the profile tubes 2 is achieved.
- Fig. 1 sit on the outside of the Profile tubes 2 by means of clamping connections friction and heat-resistant Slats 7, which for heat to be heated Gas, e.g. Air, serve and in parallel order arranged in the direction of extension of the tubes 2 one behind the other are.
- Gas e.g. Air
- the direction indicated by the arrow A flow the fins 7 with the gas to be heated is approximately parallel to the lamellar plane and perpendicular to the extension direction the profile tubes 2 provided so that the gas flow between the profile tubes 2 and the lamellae 13 arranged thereon passes through while sweeping the lamellar plane.
- the provided with the slats 13 profile tubes 2 are on its one end 2a on a plug-in flange 8 and on her other end 2b fixed to a screw 9.
- the Ends 2a, 2b of the profile tubes 2 are in recesses 10 in the plug-in flange 8 and in corresponding recesses (not shown) inserted in the screw 9 and by caulking on the support frame thus formed established.
- the material of the profile tubes 2, e.g. Aluminum or an alloy thereof is optional for better fixation at the ends 2a, 2b of Profile tubes 2 slightly compressed.
- the between the profile tubes 2 and the support frame provided clamping connection can in the rest of the DE 198 48 169 A1 described Be formed manner.
- Fig. 3 shows a plan view of a blank of a primalamelle 7 (see Fig. 4 to 10), which of a e.g. obtained by a punching process flat blank an aluminum sheet is obtained.
- the blank is provided with two openings 11, which in the area of his longitudinal ends are provided and substantially in the transverse direction of the blank or the thereof to be obtained Extend lamella.
- the openings 11 are used for Pass each one of the two profile tubes 2 of the heater 1 of FIG. 1. For this purpose, as below Referring to Fig.
- the Breakthroughs 11 delimiting edges to form tabs bent out of the lamellar plane, leaving itself a reliable and permanent clamping connection of the slats 7 on the outside of the profile tubes 2 results.
- the Longitudinal edges of the apertures 11 are perpendicular from two to these slots 12 arranged approximately equidistant divided so that when bending these edges three in the direction of extension of the edges arranged side by side Tabs (Fig. 4 ff) show that a flawless Contact with the profile tubes 2 (Fig. 1) and thus a good Ensure heat transfer.
- the training of the two Breakthroughs 11 is identical.
- the blank is also at its transverse edges with an approximately central projecting area 13 equipped, which by perpendicular to the transverse edges Slits 14 is limited.
- the protruding ones are used Areas 13 of the transverse edges of the blank for training one clamping lug bent out of the lamellar plane, which for elastic conditioning on a respectively adjacent Slat 7 is provided (see Fig. 1) and the parallel Arrangement of a plurality of lamellae 7 on the Profile tubes 2 thus stabilized.
- FIG. 7 to show 10 shows a second embodiment of a heat-dissipating blade 7b, which have each been obtained from a blank according to FIG. 3 are.
- the lamellae 7a, 7b differ only by the embodiment of the explained below in detail Imprints 15 on much of her between the Breakthroughs 11 arranged central area, which serves to dissipate heat to the gas to be heated and in Longitudinal direction of the slats 7a, 7b substantially radially from the two openings 11 passing through the profile tubes 2 (Fig. 1) extends away.
- the two are in the longitudinal direction of the lamellae 7a, 7b opposite Edges, which limit the apertures 11, arcuate with the formation of bent out of the lamellar plane Tabs 16 bent.
- the slots 12 provide for a subdivision of the tabs 16 in the longitudinal direction the breakthroughs 11 limiting longitudinal edges, so that three adjacent tabs 16a, 16b, 16c (Fig. 4, 5 and 7, 8) are formed, which is slightly concave configuration of the longitudinal leg 5 of the Adjust profile tubes 2 (Fig. 2) and for a flawless Clamping seat of the slats 7a, 7b on the profile tube 2 and in particular for a good heat transfer between them to care.
- the tabs 18 have one over their direction of extension one constant distance to each other, the substantially the width b (Fig. 2) of the profile tubes 2 corresponds. These tabs 18 serve to stabilize the clamping seat the lamellae 7a, 7b on the profile tubes. 2
- the slats 7a, 7b in the region of the openings 11 are also parallel to the tabs 18 extending Seams 19 are provided, which with respect to the longitudinal direction the lamellae 7a, 7b laterally of the openings 11 are arranged and stamped out of the lamellar plane.
- the stamping can be opposite or corresponding the deflection of the tabs 16, 18 be provided wherein the embossment is carried out such that the slat surface is not broken. Stabilize the beads 19 the lamellae 7a, 7b in the region of the openings 11th
- the projecting central portions 13 of the opposite Transverse edges of the fins 7a, 7b are under formation in each case a clamping tab 21 approximately arcuately from the slat plane bent out, the clamping tabs 21 for elastic attachment to a respective adjacent lamella 7a, 7b of the heating device 1 according to FIG. 1 are provided.
- the clamping tabs 21 can in the same or in the opposite Direction as the edges of the apertures 11 bent be and with the lamellar plane an angle ⁇ of For example, form about 50 ° ( Figures 6 and 9).
- Both the slat 7a shown in FIGS. 4 to 6 and also the lamella 7b according to FIGS. 7 to 10 is finally embossed 15 provided, while maintaining a continuous surface of the lamella 7 of the lamellar plane protrude, without the lamella 7 to form breakthroughs to enforce.
- the embossments 15 are practical over the entire heat to be heated to the Gas serving area arranged, which is in the longitudinal direction the lamellae 7a, 7b substantially radially of the the apertures 11 passing through the profile tubes 2 (Fig. 1) extends away.
- the illustrated embodiments which are equipped with two openings 11 and accordingly for a heating device 1 with two profile tubes 2 provided that this area is the between the apertures 11 arranged portion of the slats 7a, 7b.
- the fin 7a has embossments 15a with a substantially rectangular base and one in essence trapezoidal, obliquely upwardly projecting from the lamellar plane Surface on, with a plurality of in the flow direction A of the gas to be heated arranged one behind the other Rows of such embossments 15 a is provided, which with respect to the flow direction A are arranged offset.
- the embossments 15a are the - in the present embodiment four - series of embossments 15a of identical Shape and so on by means of an embossing process applied to the lamellar plane, that the embossments 15 a indeed protruding from the lamellar plane or at the opposite Side of the blade 15a withdrawn with respect to the lamellar plane are, but - as already mentioned - the lamella 7a not enforce.
- the individual imprints 15 are in this case designed such that they are one in the flow direction A of the gas to be heated steep increase of, for example about 85 ° and on the other hand flatter, itself over the entire height of the obliquely upwardly projecting Trapezes of the embossments 15 extending waste of example about 10 ° (see in particular Fig. 5).
- the embossings 15a give the lamellae 7a on the one hand a increased dimensional stability, so that it is stiffened and it even with continuous exposure to vibration not to an undesirable noise development comes.
- each of the embossments 15a generates swirls of the same sweeping gas flow (arrow A) and increase additionally the heat exchange surface of the fin 15a, so that the heat exchange between the fin 15a and the one to be heated Gas is significantly improved. All the more so as by the turbulences occurring at the embossings 15a the gas stream A can achieve a turbulent flow.
- the embossings 15b of the lamella 7b according to FIGS. 7 to 9 differ from the embossments 15a of FIG. 4 to 6 shown lamina 7a by their substantially V-shaped Shape.
- the tip of the "V” is the imprint 15b against the flow direction A of the inflowing, too heated gas, so that at the top of the "V” is a stagnation point formed and the gas along the Leg of the "V” is deflected laterally.
- the tip of the "V” is the imprint 15b against the flow direction A of the inflowing, too heated gas, so that at the top of the "V” is a stagnation point formed and the gas along the Leg of the "V” is deflected laterally.
- the contact time of the gas on the lamellar surface increased due to the deflections.
- the legs of the "V" on a linear extension direction where they Of course, also circular or elliptical segment-shaped may be formed bent.
- the gas passing over the lamellar plane undergoes several more Deflections or multiple turbulences, so that too
- a turbulent flow can be achieved and the heat exchange between the fin 15b and the gas flow especially is effectively improved.
- embossments 15 on any Be fashion differently designed, as long as they are on the one hand to stabilize the board which the blade 7 is made, on the other hand in particular Turbulence in the sweeping gas stream A produce.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
- Fig. 1
- eine Seitenansicht einer Ausführungsform einer erfindungsgemäßen Heizvorrichtung;
- Fig. 2
- einen Querschnitt durch ein Profilrohr der Heizvorrichtung gemäß Fig. 1;
- Fig. 3
- eine Draufsicht eines Rohlings einer Wärmeabgabelamelle vor dem Anbringen von Prägungen und vor der Ausbildung von Laschen;
- Fig. 4
- eine Draufsicht einer Ausführungsform einer Wärmeabgabelamelle;
- Fig. 5
- eine Schnittansicht der Lamelle gemäß Fig. 4 entlang der Linie V-V;
- Fig. 6
- eine Seitenansicht der Lamelle gemäß Fig. 4 und 5;
- Fig. 7
- eine Draufsicht einer anderen Ausführungsform einer Wärmeabgabelamelle;
- Fig. 8
- eine Schnittansicht der Lamelle gemäß Fig. 7 entlang der Linie VIII-VIII;
- Fig. 9
- eine Schnittansicht der Lamelle gemäß Fig. 7 und 8 entlang der Linie IX-IX gemäß Fig. 7; und
- Fig. 10
- eine vergrößerte Detailansicht X des Querschnittes der Lamelle gemäß Fig. 9.
Claims (28)
- Vorrichtung (1) zum Erwärmen von Gasströmen, insbesondere zum Beheizen von Innenräumen, wie von Kraftfahrzeugen, mit wenigstens einer im Wesentlichen rohrförmigen Erwärmungseinheit (2) mit auf dieser angeordneten Lamellen (7) zur Wärmeabgabe an das zu erwärmende Gas, dadurch gekennzeichnet, dass die Lamellen (7) mit Prägungen (15) versehen sind, welche von der Lamellenebene vorstehen.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Prägungen (15) zumindest an dem zur Wärmeabgabe an das zu erwärmende Gas dienenden Bereich der Lamellen (7), welcher sich in Längsrichtung der Lamellen (7) im Wesentlichen radial von dem wenigstens einen Rohr (2) weg erstreckt, angeordnet sind.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Lamellen (7) klemmend auf der Außenseite des Rohres (2) angeordnet sind.
- Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass eine Mehrzahl von in Strömungsrichtung (A) des zu erwärmenden Gases hintereinander angeordneter Prägungen (15) der Lamellen (7a) vorgesehen ist.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass hintereinander angeordnete Reihen von Prägungen (15a) vorgesehen sind.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Reihen von Prägungen (15a) in Strömungsrichtung (A) des zu erwärmenden Gases versetzt angeordnet sind.
- Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Prägungen (15) der Lamellen (7) einen in Strömungsrichtung (A) des zu erwärmenden Gases steilen Anstieg und einen demgegenüber flacheren Abfall aufweisen.
- Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der Winkel des Anstiegs der Prägungen (15) gegenüber der Lamellenoberfläche zwischen etwa 45° und etwa 90°, insbesondere zwischen etwa 60° und etwa 90°, beträgt.
- Vorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass der Winkel des Abfalls der Prägungen (15) gegenüber der Lamellenoberfläche zwischen etwa 1° und etwa 45°, insbesondere zwischen etwa 1° und etwa 30°, beträgt.
- Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Prägungen (15a) der Lamellen (7a) im Wesentlichen rund oder mehreckig ausgebildet sind.
- Vorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Prägungen (15a) der Lamellen (7a) viereckig, insbesondere im Wesentlichen trapezförmig oder rechteckig, ausgebildet sind.
- Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Prägungen (15b) der Lamellen (7b) im Wesentlichen V-förmig ausgebildet sind.
- Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass die Spitze des "V" der im Wesentlichen V-fömigen Prägungen (15b) der Lamellen (7b) entgegen dem anströmenden, zu erwärmenden Gas angeordnet ist.
- Vorrichtung nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass die Schenkel des "V" der im Wesentlichen V-förmigen Prägungen (15b) der Lamellen (7b) eine etwa lineare Erstreckungsrichtung aufweisen.
- Vorrichtung nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass die Schenkel des "V" der im Wesentlichen V-förmigen Prägungen (15b) der Lamellen (7b) eine etwa kreis- oder ellipsensegmentförmige Erstreckungsrichtung aufweisen.
- Vorrichtung nach einem der Ansprüche 12 bis 15, dadurch gekennzeichnet, dass mehrere V-förmige Prägungen (15b) der Lamellen (7b) in Strömungsrichtung (A) des zu erwärmenden Gases hintereinander angeordnet sind, wobei der Öffnungswinkel des "V" der V-förmigen Prägungen (15b) der Lamellen (7b) unterschiedlich groß ist.
- Vorrichtung nach Anspruch 16, dadurch gekennzeichnet, dass der Öffnungswinkel (β) des "V" der in Strömungsrichtung (A) des zu erwärmenden Gases hintereinander angeordneten V-förmigen Prägungen (15b) der Lamellen (7b) in Strömungsrichtung (A) des Gases zunimmt.
- Vorrichtung (1) zum Erwärmen von Gasströmen, insbesondere zum Beheizen von Innenräumen, wie von Kraftfahrzeugen, mit wenigstens einer im Wesentlichen rohrförmigen Erwärmungseinheit (2) mit auf dieser angeordneten Lamellen (7) zur Wärmeabgabe an das zu erwärmende Gas, wobei die Lamellen klemmend auf der Außenseite des Rohres angeordnet sind, insbesondere nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, dass die Lamellen (7) wenigstens einen das als Profilrohr (2) ausgebildete Rohr umgebenden Durchbruch (11) aufweisen und wenigstens zwei gegenüberliegende Ränder der Durchbrüche (11) unter Bildung von aus der Lamellenebene herausgebogenen Laschen (16, 18) umgebogen sind, wobei wenigstens zwei gegenüberliegende Ränder durch im Wesentlichen senkrecht zu dem Durchbruch (11) angeordnete Schlitze (12) unterbrochen sind, so dass eine Mehrzahl von in Erstreckungsrichtung dieser Ränder nebeneinander angeordneter Laschen (16a, 16b, 16c) gebildet ist.
- Vorrichtung nach Anspruch 18, dadurch gekennzeichnet, dass an wenigstens zwei gegenüberliegenden Rändern (16) der Durchbrüche (11) der Lamellen (7) jeweils wenigstens zwei Schlitze (12) unter Bildung von jeweils wenigstens drei nebeneinander angeordneten Laschen (16a, 16b, 16c) vorgesehen sind.
- Vorrichtung nach Anspruch 18 oder 19, dadurch gekennzeichnet, dass zwei gegenüberliegende, unter Bildung der Laschen (16a, 16b, 16c) umgebogene Ränder der Durchbrüche (11) der Lamellen (7) durch die im Wesentlichen senkrecht zu dem Durchbruch (11) angeordneten Schlitze (12) unterbrochen sind, während zwei weitere gegenüberliegende, unter Bildung der Laschen (18) umgebogene Ränder der Durchbrüche (11) der Lamellen (7) durchgehend ausgebildet sind.
- Vorrichtung nach einem der Ansprüche 18 bis 20, dadurch gekennzeichnet, dass die Lamellen (7) in ihren bezüglich deren Längserstreckungsrichtung seitlichen Bereichen der Durchbrüche (11) jeweils wenigstens eine weitere Prägung (19) aufweisen.
- Vorrichtung nach Anspruch 21, dadurch gekennzeichnet, dass die weiteren Prägungen (19) in Form von parallel zur Längserstreckungsrichtung der Lamellen (7) angeordneten Sicken ausgebildet sind.
- Vorrichtung nach einem der Ansprüche 1 bis 22, dadurch gekennzeichnet, dass die Lamellen (7) wenigstens eine aus der Lamellenebene herausgebogene Klemmlasche (21) aufweisen, welche zur elastischen Anlage an einer jeweils benachbarten Lamelle (7) vorgesehen ist.
- Vorrichtung nach Anspruch 23, dadurch gekennzeichnet, dass die Klemmlaschen (21) an wenigstens zwei entgegengesetzten Enden der Lamellen (7) angeordnet sind.
- Vorrichtung nach Anspruch 24, dadurch gekennzeichnet, dass die Klemmlaschen (21) von wenigstens einem Teil (13) der aus der Lamellenebene herausgebogenen Querkanten der Lamellen (7) gebildet sind.
- Vorrichtung nach einem der Ansprüche 1 bis 25, dadurch gekennzeichnet, dass die Lamellen (7) und gegebenenfalls die rohrförmige Erwärmungseinheit (2) aus Aluminium oder einer Aluminiumlegierung bestehen.
- Lamelle (7) für eine Heizvorrichtung, insbesondere gemäß dem Oberbegriff des Anspruchs 1, dadurch gekennzeichnet, dass sie mit Prägungen (15) versehen ist, welche von der Lamellenebene vorstehen.
- Lamelle nach Anspruch 27, gekennzeichnet durch die Merkmale wenigstens eines der Ansprüche 2 bis 26.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20312313U DE20312313U1 (de) | 2003-08-09 | 2003-08-09 | Vorrichtung zum Erwärmen von Gasströmen |
DE20312313U | 2003-08-09 |
Publications (3)
Publication Number | Publication Date |
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EP1507126A2 true EP1507126A2 (de) | 2005-02-16 |
EP1507126A3 EP1507126A3 (de) | 2008-09-24 |
EP1507126B1 EP1507126B1 (de) | 2014-08-13 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP04018860.9A Active EP1507126B1 (de) | 2003-08-09 | 2004-08-09 | Heizlamelle und Vorrichtung zum Erwärmen von Gasströmen mit mehreren solchen Heizlamellen |
Country Status (2)
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EP (1) | EP1507126B1 (de) |
DE (1) | DE20312313U1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1593536A2 (de) | 2004-05-03 | 2005-11-09 | Eichenauer Heizelemente GmbH & Co.KG | Vorrichtung und Verfahren zum Trennen von Fluidströmen in einer Heizeinrichtung |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004062605B4 (de) * | 2004-12-24 | 2013-02-28 | Eichenauer Heizelemente Gmbh & Co. Kg | Elektrische Heizeinrichtung zum Erwärmen von Flüssigkeit in einem Kraftfahrzeug und Flüssigkeitsbehälter mit einer derartigen Heizeinrichtung |
DE202005004611U1 (de) * | 2005-03-22 | 2006-04-27 | Eichenauer Heizelemente Gmbh & Co. Kg | Vorrichtung zum Erwärmen von Gasströmen und Wärmeabgabelamellen einer solchen Vorrichtung |
DE102006017424B4 (de) * | 2006-04-13 | 2009-10-29 | Küster Automotive Door Systems GmbH | Einstellbare Befestigungsvorrichtung |
DE102006055872B3 (de) * | 2006-11-23 | 2008-03-13 | Eichenauer Heizelemente Gmbh & Co. Kg | Elektrische Heizung, insbesondere zur Verwendung als Zusatzheizung in Automobilen |
DE102011056745B4 (de) * | 2011-12-21 | 2014-01-02 | Miele & Cie. Kg | Heizeinrichtung sowie Gargerät mit einer solchen Heizeinrichtung |
EP3051223B1 (de) | 2015-01-28 | 2017-11-08 | Mahle International GmbH | Elektrische Heizungsvorrichtung |
DE102018101453A1 (de) | 2018-01-23 | 2019-07-25 | Borgwarner Ludwigsburg Gmbh | Heizvorrichtung und Verfahren zum Herstellung eines Heizstabes |
DE102019108435A1 (de) | 2019-04-01 | 2020-10-15 | Borgwarner Ludwigsburg Gmbh | Heizvorrichtung mit abgeschälten Lamellen und Verfahren zum Herstellen eines Heizstabs |
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EP0379873B1 (de) | 1989-01-26 | 1994-11-30 | Fritz Eichenauer GmbH & Co. KG | Vorrichtung zum Erhitzen von Gasen |
DE19848169A1 (de) | 1997-11-05 | 1999-05-06 | Eichenauer Gmbh & Co Kg F | Vorrichtung zum Beheizen von Innenräumen, insbesondere von Kraftfahrzeugen |
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2004
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EP0379873B1 (de) | 1989-01-26 | 1994-11-30 | Fritz Eichenauer GmbH & Co. KG | Vorrichtung zum Erhitzen von Gasen |
DE19848169A1 (de) | 1997-11-05 | 1999-05-06 | Eichenauer Gmbh & Co Kg F | Vorrichtung zum Beheizen von Innenräumen, insbesondere von Kraftfahrzeugen |
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EP1593536A2 (de) | 2004-05-03 | 2005-11-09 | Eichenauer Heizelemente GmbH & Co.KG | Vorrichtung und Verfahren zum Trennen von Fluidströmen in einer Heizeinrichtung |
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Also Published As
Publication number | Publication date |
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EP1507126A3 (de) | 2008-09-24 |
EP1507126B1 (de) | 2014-08-13 |
DE20312313U1 (de) | 2004-12-16 |
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