WO2012016686A1 - Module à lamelles d'échange de chaleur, échangeur de chaleur et module de chauffage électrique - Google Patents

Module à lamelles d'échange de chaleur, échangeur de chaleur et module de chauffage électrique Download PDF

Info

Publication number
WO2012016686A1
WO2012016686A1 PCT/EP2011/003882 EP2011003882W WO2012016686A1 WO 2012016686 A1 WO2012016686 A1 WO 2012016686A1 EP 2011003882 W EP2011003882 W EP 2011003882W WO 2012016686 A1 WO2012016686 A1 WO 2012016686A1
Authority
WO
WIPO (PCT)
Prior art keywords
plane
heat exchanger
heat transfer
transfer sections
module
Prior art date
Application number
PCT/EP2011/003882
Other languages
German (de)
English (en)
Inventor
Ingo Schehr
Original Assignee
Ingo Schehr
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 Ingo Schehr filed Critical Ingo Schehr
Publication of WO2012016686A1 publication Critical patent/WO2012016686A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • 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
    • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/262—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an insulated metal plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • 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
    • H05B2203/022—Heaters specially adapted for heating gaseous material
    • H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system

Definitions

  • the invention relates to a heat exchanger fin module according to the preamble of claim 1 and equipped with such heat exchanger fin modules heat exchanger and electric heating modules for heating an air flow.
  • a heat exchanger fin module of the present type thus consists of a metal strip transformed into heat exchanger lamellae, which defines in its stretched, band-shaped, unconverted initial state with its longitudinal direction and its width direction a first plane, wherein the metal strip is reshaped in the heat exchanger lamella module in that it alternates between the first plane and a second plane, parallel to the first plane, to form a plurality of heat exchanger fins connecting the first plane and the second plane, arranged one behind the other in the longitudinal direction and through which a fluid can flow, forms in the first plane substantially planar first heat transfer sections, which line up in the longitudinal direction and at least partially, preferably completely cover the first plane, in the first plane in non-overlap areas, each at least one single-layer Form part of the first heat transfer sections, is formed in one layer, in the first plane in double overlap enriched in two layers, and in the first plane in three overlapping areas, each forming at least a three-ply face of the first heat transfer sections, three layers superimposed, wherein the non-
  • Such heat exchanger fin modules are used in heat exchangers, such as motor vehicle radiators or heating modules for heating an air flow. They serve to conduct heat from the heat transfer sections into the fluid-through heat exchanger fins, of which the heat is then delivered to the fluid flowing through the heat exchanger fins, namely a liquid or gas, usually water or air in particular, or vice versa Heat is removed from the fluid by means of the heat exchanger fins.
  • Heating elements in the case of heating modules for air flow heating
  • optionally cooling elements when the fluid flowing through the heat exchanger fins fluid cooled
  • fluid-flow channels for example in the case of motor vehicle radiators
  • Known heat exchanger lamella modules of this type extend, seen in plan view on their narrow side, ie in the width direction, in rectangular meanders or in sinusoidal or sinusoidal waves, or in a triangular shape, which arises because the metal strip of a heat transfer section in the Starting from the first plane, it is deflected diagonally backwards to the second plane in order to be able to connect there to the preceding heat transfer section.
  • Examples of the described forms of known heat exchanger fin modules are shown in FIGS. 1 to 3.
  • Such and similar heat exchanger fin modules and their applications are described in the following publications: US Pat. No. 5,256,857, DE 31 19 302 A1, DE 10 2007 003 549 A1 and EP 1 605 221 AI.
  • a preferred field of application for heat exchanger fin modules of the type mentioned is in electrical heating modules for heating an air flow, especially in vehicles, with PTC heating elements.
  • PTC elements are semiconductor resistors made of ceramic whose ohmic resistance is temperature-dependent.
  • the resistance-temperature characteristic is not linear; the resistance of a PTC heating element initially decreases slightly with increasing component temperature, in order then to rise very steeply at a characteristic temperature (so-called reference temperature).
  • This generally positive slope coefficient (PTC positive temperature coefficient) results in a PTC heating element having self-regulating properties with respect to the temperature setting at current flow. If the component temperature is well below the reference temperature, the PTC heating element has a low resistance, so that correspondingly high currents can be passed through. If good heat dissipation from the surface of the PTC heating element is taken care of, a corresponding amount of electrical power is absorbed and dissipated as heat.
  • the PTC electrical resistance also increases rapidly, limiting the electrical power consumption to a very low level.
  • the component temperature then approaches an upper limit, which depends on the heat release to the environment of the PTC heating element. Under normal environmental conditions, the component temperature of the PTC heating element can therefore not rise above a characteristic highest temperature, even if in case of failure, the desired heat dissipation from the PTC heating element to the environment is completely interrupted.
  • PTC heating elements for use in Walkerungsl. Air conditioning or predestined for other applications for air flow heating, especially in vehicles. For safety reasons, vehicles may not cause a flammable temperature in the heating element even in the event of a fault, although a high heat output is nevertheless required in normal operation.
  • the heat-conducting heat exchanger fins serve as heat-dissipating elements with which the heat generated by the at least one PTC heating element is transferred to the air flowing through the heat-dissipating area. They consist of a good heat-conducting material, preferably of metal, in particular copper, brass or preferably aluminum. They are in the art as reshaped, ie For example, folded and / or curved lamellar band realized, for example, a meandering, rectangular, z-shaped or S-shaped folded to heat exchanger fins metal strip sheet metal strip, which forms an elongated heat exchanger lamellar band module (see, for example, EP 0 350 528 AI and WO 2009/087106 AI).
  • Electrical heating modules with PTC heating elements and heat exchanger fins modules of the type mentioned are usually made of several layers of surface next to each other, with its narrow side in the air flow PTC heating elements, which are electrically contacted at their flat tops and bottoms with contact surfaces. Adjacent thereto are heat exchanger lamellar modules as described above, which are also with their narrow side in the air flow and contact on their broadside the contacting surface of the PTC heating elements at regular intervals, namely with their heat transfer sections, thermally overlying.
  • the spring-loaded pressing the heat exchanger fins modules to the PTC heating elements or at their contacting surfaces requires a high stability of the heat exchanger fins module meandering heat exchanger fins; because the heat transfer from the PTC heating element in the heat exchanger fins modules requires relatively high contact pressure to be efficient. But also in other applications, such as automotive radiators, high inherent stability of the heat exchanger fin modules is highly desirable.
  • the present invention seeks to improve a heat exchanger fin module of the type mentioned in terms of less expensive preparation, in particular with respect to lower tooling costs, higher stability, improved heat transfer and lower pressure drop.
  • This object is achieved by a heat exchanger fin module with the features of the attached claim 1.
  • a heat exchanger lamella module thus consists of a metal strip formed into heat exchanger lamellae which defines in its stretched, band-shaped, unconverted initial state with its longitudinal direction and its width direction a first plane, wherein the metal strip is reshaped in the heat exchanger lamella module such that it regularly alternates between the first plane and a second plane, which is parallel to the first plane, to form a plurality of heat exchanger fins connecting the first plane and the second plane, which are arranged one behind the other in the longitudinal direction and with a fluid can be flowed through, forms in the first plane substantially planar first heat transfer sections, which line up in the longitudinal direction and at least partially, preferably completely cover the first plane, in the first plane in non-overlapping areas, each at least one single-layer T.
  • a heat exchanger fin module according to the invention is stable because the metal strip from which the heat exchanger fin module is superimposed in two layers on a partial surface of the first heat transfer sections, wherein the resulting two-layer partial surface and an optionally remaining single-layer partial surface of the first heat transfer sections extend over the entire width of the metal strip and are arranged one behind the other in the longitudinal direction of the metal strip.
  • the metal strip after the formation of a heat transfer section not directly from this starting, forming a heat exchanger blade over to the other level, but initially completely bent and forming a second layer of the heat transfer section backwards again, until it at the rear End of this two-ply face, preferably about half of the longitudinal extent of the heat transfer section is bent down and forming a heat exchanger blade to the other level, where it is again bent to the front and forms the single-layer partial surface or area of a local heat transfer section.
  • the course of the heat exchanger fins is preferably substantially orthogonal to the first and second levels of the heat exchanger fin module, but this need not be so and depends in particular on the desired two-ply coverage of the heat transfer sections.
  • the first heat transfer sections (2) are designed to be double-layered to 30% to 70%, preferably 40% to 60%, of the longitudinal direction (x). As a result, particularly stable embodiments can be formed.
  • a heat exchanger fin module according to the invention is also very stable because the metal strip constituting the heat exchanger fin module is superimposed in three layers in the first plane in triple overlapping regions, each forming at least a three-layered partial surface of the first heat transfer sections, the resulting The resulting three-layer partial surface and an optionally remaining single-layer partial surface of the first heat transfer sections extend over the entire width of the metal strip and are arranged one behind the other in the longitudinal direction of the metal strip.
  • This is realized, for example, in that the metal strip is flanged from the second plane to the first plane and leading out of the second plane and a second heat exchanger blade is bent toward the first plane, and then in the first plane again in the longitudinal direction bent in front to form a three-layer first heat transfer section in the first plane.
  • the triple overlap region is not limited to the immediate vicinity of the fold, but rather over one extending certain extent in the longitudinal direction.
  • the first heat transfer sections are formed in three layers to 30% to 70%, preferably 40% to 60%, of the longitudinal direction.
  • the first heat transfer sections are formed in one layer to less than 10% of the longitudinal direction, preferably only in the region of the fold, so that the first heat transfer sections consist essentially of a series of two- and three-layered sections.
  • Partial surfaces exist, wherein between adjacent two- and dreila-gigen faces only or only substantially in the region of the fold form a single-layer part surface in which the metal strip in a single-surface course from one side of the first plane to the other side of the first plane replaced.
  • the partially two-day and three-layer formation of the first heat transfer sections in the first plane leads to a high stability of the same.
  • the heat exchanger plate modules can be produced by a purely mechanical deformation or cold forming of a metal strip.
  • the metal strip can be made of any suitable material with good heat conduction, e.g. Made of aluminum, brass or copper.
  • first level and second level are not always understood to mean levels in the mathematical sense. Rather, these "planes” can also run along a curved surface with a relatively large bending radius, for example, a circular arrangement of several heat exchanger. scher-lamella modules instead of a strictly row-like arrangement to allow. Furthermore, these "planes” are not necessarily in the mathematical sense without thickness, but may have a certain given by the thickness of the metal strip and its two- and three-layer formation, non-zero thickness.
  • the inherent stability of the heat exchanger fin module is further high in that in a remote from the two-ply faces rear transverse edge of the single-ply face of each first heat transfer section a recess for receiving a facing away from the single-ply face front edge of the two-ply face of the next adjacent first heat transfer section is formed so that adjacent first heat transfer sections can overlap in the longitudinal direction so far.
  • the front transverse edges of the two-layered partial surfaces of the double overlapping regions are each formed in a recess formed at the rear transverse edge of the next adjacent, the double overlap region in the longitudinal direction following non-overlapping region by extending in the width direction of the folded metal strip, so that in Overlap longitudinal front portions of the two-ply faces and the rear portions of the single-ply faces each in a triple overlap region to form the three-ply faces of the first heat transfer sections.
  • both a high stability and a good heat conduction of a heat exchanger fin module according to the invention is achieved, even if the metal strip is only partially covered in the second level with second heat transfer sections, even if these only one layer are formed, and between the second heat transfer sections each uncovered by second heat transfer sections open sections, so that the second plane as an alternating sequence of second heat transfer sections and open sections is formed.
  • the open areas provide great manufacturing advantages. In particular, the tool for forming the metal strip can be made much cheaper.
  • a heat exchanger fin module according to the invention can be further optimized if the front edges of the two-layer partial surfaces of the first heat transfer sections are pressed against the recesses of the rear transverse edges of the single-layer partial surfaces of respectively adjacent heat transfer sections, in such a way that the contact pressure is fluid-tight.
  • This fluid-tightness makes it possible for the heat-exchanger lamella module in particular to be able to flow through liquids without these being able to escape laterally out of the heat-exchanger lamella module.
  • the heat exchanger lamella module thus forms fluid-tight channels between the individual heat exchanger lamellae.
  • the heat exchanger fin module according to the invention is formed by a metal band which is formed so that it forms to form a single-layer first heat transfer section and the fold forming obliquely to the first plane, then in the first plane in the longitudinal direction forward, provided that one-layer first heat transfer section is formed not only in the region of the fold, then flanged at a front edge to the second plane and, lying on the heat transfer section, forming a two-ply face of the same, is fed back against the longitudinal direction until it leading out of the first plane and forming a heat exchanger blade is bent to the second plane extending, and then in the second plane turn in the longitudinal direction bent forward to form a second heat transfer section in the second plane, where it then a second leading edge is flanged towards the first plane and leading out of the second plane and a second heat exchanger blade is bent toward the first plane extending, and then in the first plane turn in the longitudinal direction bent forward to a three-layer first heat transfer Forming section in the first plane, then again to form
  • a further preferred development of the invention is that in the heat exchanger fins as in WO 2009/087106 AI substantially transversely and / or substantially longitudinally directed to the fluid flow beads are formed to a better turbulence through the heat exchanger fins effecting flowing fluid. Such swirling in the fin area increases the heat transfer from the heat exchanger fins into the fluid (and vice versa).
  • the heat exchanger fins as in WO 2009/087106 AI may also be provided with essentially transverse to the fluid flow breakouts. These can be very easily introduced into the heat exchanger fins.
  • the heat exchanger fins of the heat exchanger fin module according to the invention can be provided with fluid flow-conducting bends in order to divert the fluid flow passing through the heat exchanger fins.
  • a heat exchanger fin module according to the present invention can be used in all types of heat exchangers.
  • a particularly preferred application consists in electrical heating modules for heating an air flow, which comprise at least one PTC heating element and at least one heat-dissipating area adjoining the same and passing through it.
  • At least one heat exchanger fin module is arranged, which is in operative connection with the PTC heating element, ie in heat-conducting connection and emits the heat from this in the sweeping through the heat exchanger fin module air flow.
  • a very good heat transfer from the PTC heating element in the heat exchanger fin module and there in the heat transfer sections is due to the peculiarity of the PTC heating element of particular importance; because this then takes on a lot of electrical power and converts it into heat, if it is held even at low temperature, so the heat generated by it is thus quickly and completely dissipated.
  • the heat transfer between the PTC heating element and a heat exchanger fins module is in experience best when the heat exchanger fins module is pressed against the surface of the PTC heating element.
  • the extremely high intrinsic stability of the heat exchanger fin module according to the invention is therefore of great advantage, especially in this field of application.
  • an electric heating module is advantageously designed so that in each case at least one PTC heating element between two heat exchanger fin modules according to the invention is arranged, which rest with their heat transfer sections directly or indirectly on the PTC heating element.
  • the heat generated in the PTC heating element is dissipated on both sides in the air flow, which increases the efficiency of the heating module, and on the other hand, the PTC heating element then quite simply be electrically contacted via the two heat exchanger lamella modules.
  • a metallic contact element can be arranged in each case. This then serves not only for electrical contacting, but also for a mechanical pressure distribution in order to avoid load peaks on the PTC heating element. As far as the PTC heating elements do not extend over the entire surface of the heat transfer sections of the heat exchanger fins modules, but on the other hand are smaller, such intermediate metallic contact elements also ensure a more uniform heat distribution in the heat exchanger fins modules. Further, between the PTC heating element and a fin strip module adjacent thereto, there may still be arranged a so-called support element which is electrically and thermally conductive, i. preferably made of metal, and in particular the mechanical adjustment and the distribution of forces is used.
  • a further advantageous embodiment of an electric heating module according to the invention finally consists in that the PTC heating element is not formed as a plate-like structure, but as a fluid-flowable tube.
  • the PTC heating element can then not only heat an air flow by means of the heat exchanger fin modules, but also a further fluid flow, in particular liquid flow, flowing through the PTC heating element. If required, such an electric heating module can even become a chilled air cooling unit, when the PTC heating element is turned off and a cooling fluid is passed therethrough.
  • a heat exchanger fin module according to the invention has the following advantages: It has a high intrinsic stability, good heat transfer, low flow resistance and low pressure drop.
  • a particular advantage is the inexpensive and efficient production with little expenditure of time and low tool cost by using a cheap tool for forming the metal strip, less required folds of the metal strip and in particular the ability to open in the open sections in the second level and between the heat exchanger Slats to introduce a pressing tool with which in the first level superimposed faces of the heat transfer sections can be compressed with high pressure to achieve high stability and good heat transfer.
  • FIG. 1 shows a schematic side view of a rectangular shaped heat exchanger fin module according to the prior art
  • Figure 2 is a schematic side view of a Z-shaped formed
  • Figure 3 is a schematic side view of an S-shaped reshaped
  • FIG. 4 shows a perspective view of a first heat exchanger lamella module according to WO 2009/087106 A1,
  • FIG. 5 is a perspective view of a second heat exchanger plate module according to WO 2009/087106 AI
  • FIG. 6 shows a perspective view of a heat exchanger fin module according to the invention
  • FIG. 7 is a side view of FIG. 6,
  • FIG. 8 shows a detail of FIG. 7,
  • FIG. 10 shows an exploded perspective view of a first electrical heating module according to the invention
  • Figure 11 is a perspective view of a second electric heating module according to the invention.
  • Figure 12 is an exploded perspective view of a third electrical heating module according to the invention.
  • Figures 1 to 3 show schematic side views of three examples of heat exchanger fin modules 1 according to the prior art. They consist of a heat exchanger fins 2 deformed metal strip 3, which defines in its elongated, band-shaped, unconverted initial state with its longitudinal direction x and its width direction y a first plane A, wherein the metal strip 3 in the heat exchanger lamella module 1 is so transformed in that it alternates between the first plane A and a second plane B, which is parallel to the first plane A, to form a number of heat exchanger fins 2 connecting the first plane A and the second plane B, which are arranged one behind the other in the longitudinal direction x and can be flowed through by a fluid.
  • the metal strip 3 forms first heat transfer sections 4 in the first plane A and second heat transfer sections 5 in the second plane B.
  • the heat exchanger fins 2 are formed in rectangular meanders, whereby both the stability and the total area of the heat transfer Sections 4, 5 are not optimal.
  • the heat exchanger fin module 1 of Figure 2 has a z-shaped or triangular folding of the heat exchanger fins 2, which although the coverage of the planes A and B through the heat transfer sections 4, 5 optimized, but is capable of improvement in terms of inherent stability.
  • the heat exchanger fin module 1 of Figure 3 has s-shaped or sinusoidally shaped heat exchanger fins 2, which in turn is detrimental to the intrinsic stability. In all cases, the first level A and the second level B are the same.
  • the flow resistance for the fluid flowing through between the heat exchanger fins 2 in the y direction is greater in the embodiment of FIG. 3 than in FIG. 2 and in FIG. 2 greater than in FIG. 1.
  • FIG. 4 shows an improved heat exchanger fin module 1 according to the prior art in a perspective view. It is made of a metal strip 3 which reciprocates between a first plane A and a second plane B and thereby forms first heat transfer sections 4 in the first plane A and second heat transfer sections 5 in the second plane B, while the connecting pieces form between the planes A and B perpendicular heat exchanger fins 2.
  • the metal strip 3 has in this case been reshaped such that it lies to form a first heat transfer section 4 in the first plane A, forming a single-layer part surface 6 of the first heat transfer section 4, then towards the second plane B at a front edge 7 flanged and lying on the first heat transfer section 4, forming a two-ply part surface 8, was fed back against a longitudinal direction x until it was leading out of the first plane A and a heat exchanger blade 2 forming the second plane B was bent away, and then in the second plane B in the longitudinal direction x to the front - in the representation so to the right - is bent away to form a subsequent single-layer first heat transfer section 4 in the second plane B.
  • the metal strip 3 is then in turn crimped on a front edge 7 to the plane A and, lying on the second heat transfer section 5, forming a two-ply face 8, has been returned until it led out of the second plane B and a forming further heat exchanger lamella 2 to the first plane A, etc.
  • the leading edges 7 of the first and second heat transfer sections 4, 5 in each case abut against rear transverse edges 9 of the respective adjacent heat transfer sections, so that substantially As Figure 4 illustrates, both in the first plane A and in the second plane B forms a closed surface of juxtaposed first heat transfer sections 4 and second heat transfer sections 5.
  • the heat exchanger fins 2 are orthogonal to the planes A and B and the substantially closed design of the heat transfer sections 4, 5 is desired, it follows from geometric requirements that the heat transfer sections 4, 5 each about half two-day and the other half are single-layered.
  • the illustrated heat exchanger fin module 1 results in a good stability, especially in a direction perpendicular to the planes A and B direction.
  • FIG. 5 shows a further improved heat exchanger fin module 1 according to the prior art in a perspective view.
  • the difference of this embodiment to that of Figure 4 is that the heat transfer sections 4, 5 are no longer just lined up, but overlap slightly, resulting in the overlap region in the longitudinal direction x short three-layered sections or three-layered partial surfaces 10.
  • the single-layer partial surfaces 6 of the heat transfer sections 4, 5 are each provided with a recess 11 which is adapted to the front edge 7 of the next adjacent heat transfer section 4, 5.
  • the recesses 11 are formed by extending in the width direction y folds 12 of the metal strip. 3 formed and in the region of a fold 12, the metal strip 3 extends in a single layer from one to the other side of the formed by the heat transfer sections 4, 5 levels A, B.
  • the single-layer partial surfaces 6 of the heat transfer sections 4, 5 are each provided with a recess 11, which is adapted to the front edge 7 of the next adjacent heat transfer section 4, 5, this can be a short distance into the single-layer partial surface 6 of the heat transfer section.
  • the two-ply face 8 and the single-ply face 6 of each heat-transfer section 4, 5 are not the same size, since sections 4, 5 extend and the heat transfer sections 4, 5 substantially form a flat surface in the planes A, B.
  • the heat exchanger fins 2 are here again perpendicular to the planes A and B.
  • the leading edges 7 of the heat transfer sections 4, 5 are pressed into the recesses 11 in such a way that a fluid-tight connection results.
  • the spaces between the heat exchanger fins 2 thus form fluid-tight channels.
  • the first plane A is in each case formed identically to the second plane B, and the second heat transfer sections 5 completely cover the second plane B.
  • Figures 6 and 7 show an embodiment of a heat exchanger fin module according to the invention 1, Figure 6 in a perspective view and Figure 7 in a side view.
  • the first level A with the first heat transfer sections 4 corresponds in its construction to that of the plane A of the heat exchanger fin module 1 of Figure 5 with the following two differences.
  • the first heat transfer sections 4 are not only three-layered in the immediate region of the recesses 11, but the three-layer construction extends over a longer region in the longitudinal direction x, for example wise to 30% to 70%, preferably 40% to 60% of the longitudinal direction x of the first heat transfer sections 4 and the length of the heat exchanger fin module 1.
  • the first heat transfer sections 4 according to the illustrated preferred embodiment to less than 10% of the longitudinal direction x of the first heat transfer sections 4 or the length of the heat exchanger lamella module 1, preferably formed in one layer only in the region of the fold 12. Both differences increase in comparison to the known training, both the stability and the heat conduction.
  • the second plane B is only partial covered with second heat transfer sections 5 and has between the second heat transfer sections 5 each not covered by second heat transfer sections 5 open sections 13, so that the second plane B is formed as an alternating sequence of second heat transfer sections 5 and open sections 13 ,
  • the heat exchanger fin module 1 according to the invention can be produced with very low tooling costs, while still achieving both high stability and good heat conduction properties.
  • tools may easily be introduced through the open portions 13 between the heat exchanger fins 2, for example, a pressing tool for compressing the multi-layered first heat transfer sections 4. This enables a favorable and high-quality production.
  • the second heat transfer sections 5 single-layer be educated. This simplifies the production of the heat exchanger fin module 1 and allows a good heat transfer in this area over only one material thickness. Furthermore, it may be provided for structural reasons and to simplify the production as shown that the length (measured in the longitudinal direction x) of the second heat transfer sections 5 of the length (measured in the longitudinal direction x) of the two-ply faces 8 of the first heat transfer sections 4 corresponds. For the same reason it can be provided that, as shown, the length (measured in the longitudinal direction x) of the open sections 13 of the second plane B corresponds to the length (measured in the longitudinal direction x) of the three-layered partial surfaces 10 of the first heat transfer sections 4.
  • the heat exchanger fin module 1 can be provided that are formed in edges of the metal strip 3, which are formed by second heat transfer sections 5 and heat exchanger fins 2, directed substantially perpendicular to the metal strip 3 beads 14.
  • the metal strip 3 which are formed by second heat transfer sections 5 and heat exchanger fins 2, directed substantially perpendicular to the metal strip 3 beads 14.
  • one such edge is formed in each case with a bead 14, to be precise approximately in the middle of the edges extending in the width direction y.
  • the beads 14 are shown enlarged again in FIGS. 8 and 9. It becomes clear that it is made possible, in particular by the open sections 13 present according to the invention, to mold such beads 14 into the edges when producing a heat exchanger lamella module 1 from a metal strip 3.
  • FIG. 10 shows a schematic perspective exploded view of an example of an electric heating module 15. It comprises a heat exchanger arrangement of two heat exchanger fin modules 1 of the type illustrated in FIGS. 6 to 9. Two heat exchanger fin modules 1 are arranged one above the other. The gap between them could allow fluid to pass through in other applications.
  • a heating element namely a PTC heating element 16 is used, which in the assembled state of the heating module 15 is in electrical and thermally conductive connection to the first heat transfer sections 4 of the two heat exchanger fin modules 1, receives from these current and delivers to this heat.
  • a plate-shaped element for example a metallic contact element 17 and / or a support element 18, between the first heat transfer sections 4 of the two heat exchanger lamella modules 1 and the PTC heating element 16.
  • FIG. 11 shows a modification to FIG. 10 with three heat exchanger lamination modules 1 arranged one above the other.
  • FIG. 12 shows a further modification to FIG. 10 with two heat exchanger lamination modules 1 arranged one behind the other in the flow direction of the heated fluid corresponding to the width direction y one side of the two PTC heating elements 16 and a larger common heat exchanger fin module 1 on the other side of the two PTC heating elements 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

La présente invention concerne un module à lamelles d'échange de chaleur (1) composé d'une bande métallique (3) façonnée de manière à former des lamelles d'échange de chaleur (2), s'étendant alternativement de façon régulière entre un premier plan (A) et un second plan (B) pour former des lamelles d'échange de chaleur (2). Selon l'invention, le premier plan (A) est totalement recouvert de premières sections de transfert de chaleur (4), le second plan (B) n'est que partiellement recouvert de secondes sections de transfert de chaleur (5), et des sections ouvertes (13) respectivement non recouvertes de secondes sections de transfert de chaleur (5) se trouvent entre les secondes sections de transfert de chaleur (5), de manière que le second plan (B) est formé d'une succession alternée de secondes sections de transfert de chaleur (5) et de sections ouvertes (13).
PCT/EP2011/003882 2010-08-04 2011-08-03 Module à lamelles d'échange de chaleur, échangeur de chaleur et module de chauffage électrique WO2012016686A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010033309A DE102010033309A1 (de) 2010-08-04 2010-08-04 Wärmetauscher-Lamellenmodul, Wärmetauscher und elektrisches Heizmodul
DE102010033309.3 2010-08-04

Publications (1)

Publication Number Publication Date
WO2012016686A1 true WO2012016686A1 (fr) 2012-02-09

Family

ID=44534247

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/003882 WO2012016686A1 (fr) 2010-08-04 2011-08-03 Module à lamelles d'échange de chaleur, échangeur de chaleur et module de chauffage électrique

Country Status (2)

Country Link
DE (1) DE102010033309A1 (fr)
WO (1) WO2012016686A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9291362B2 (en) 2011-12-22 2016-03-22 Eberspacher Catem Gmbh & Co. Kg Electrical heating device and suitable frame

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010033310B4 (de) 2010-08-04 2012-06-14 Ingo Schehr Elektrisches Heizmodul mit PTC-Element zum elektrischen Erwärmen eines Luftstroms
DE202010011016U1 (de) 2010-08-04 2011-10-10 Ingo Schehr Elektrisches Heizmodul mit PTC-Element zum elektrischen Erwärmen eines Luftstroms
DE102012106157A1 (de) * 2012-07-09 2014-01-09 Dbk David + Baader Gmbh Lamellenelement und Verfahren zur Herstellung des Lamellenelements
FR2998095B1 (fr) * 2012-11-15 2016-01-08 Excellence Ind Module de refroidissement de panneau thermique
DE102017121063A1 (de) * 2017-05-24 2018-11-29 Webasto SE Heizleiter sowie Heizgerät

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3119302A1 (de) 1980-05-14 1982-02-18 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Luftheizvorrichtung
EP0350528A1 (fr) 1988-07-15 1990-01-17 David & Baader DBK Spezialfabrik elektrischer Apparate und Heizwiderstände GmbH Radiateur
US5256857A (en) 1990-08-22 1993-10-26 Texas Instruments Incorporated Finned PTC air heater assembly for heating an automotive passenger compartment
EP1544564A1 (fr) * 2003-12-19 2005-06-22 Modine Manufacturing Company Echangeur de chaleur à tubes plats et tube plat pour échangeur de chaleur
EP1605221A1 (fr) 2003-02-19 2005-12-14 Zexel Valeo Climate Control Corporation Echangeur thermique
DE102007003549A1 (de) 2007-01-24 2008-07-31 Valeo Klimasysteme Gmbh Luftstromerwärmungsvorrichtung mit Heizvlies
WO2009087106A1 (fr) 2008-01-11 2009-07-16 MicroHellix GmbH Module à lamelles d'échangeur thermique, échangeur thermique et module de chauffage électrique
WO2011082912A2 (fr) * 2009-12-16 2011-07-14 Behr Gmbh & Co. Kg Échangeur thermique thermoélectrique

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3119302A1 (de) 1980-05-14 1982-02-18 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Luftheizvorrichtung
EP0350528A1 (fr) 1988-07-15 1990-01-17 David & Baader DBK Spezialfabrik elektrischer Apparate und Heizwiderstände GmbH Radiateur
US5256857A (en) 1990-08-22 1993-10-26 Texas Instruments Incorporated Finned PTC air heater assembly for heating an automotive passenger compartment
EP1605221A1 (fr) 2003-02-19 2005-12-14 Zexel Valeo Climate Control Corporation Echangeur thermique
EP1544564A1 (fr) * 2003-12-19 2005-06-22 Modine Manufacturing Company Echangeur de chaleur à tubes plats et tube plat pour échangeur de chaleur
DE102007003549A1 (de) 2007-01-24 2008-07-31 Valeo Klimasysteme Gmbh Luftstromerwärmungsvorrichtung mit Heizvlies
WO2009087106A1 (fr) 2008-01-11 2009-07-16 MicroHellix GmbH Module à lamelles d'échangeur thermique, échangeur thermique et module de chauffage électrique
WO2011082912A2 (fr) * 2009-12-16 2011-07-14 Behr Gmbh & Co. Kg Échangeur thermique thermoélectrique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9291362B2 (en) 2011-12-22 2016-03-22 Eberspacher Catem Gmbh & Co. Kg Electrical heating device and suitable frame

Also Published As

Publication number Publication date
DE102010033309A1 (de) 2012-02-09

Similar Documents

Publication Publication Date Title
WO2009087106A1 (fr) Module à lamelles d'échangeur thermique, échangeur thermique et module de chauffage électrique
EP1783439B1 (fr) Module chauffant électrique pour chauffer un flux d'air, notamment pour véhicules.
DE2801076C3 (de) Wärmeaustauscher bestehend aus Schichten von paarweise einander zugeordneten Wänden
WO2012016686A1 (fr) Module à lamelles d'échange de chaleur, échangeur de chaleur et module de chauffage électrique
EP2567423B1 (fr) Dispositif de refroidissement d'une batterie
DE102007006058B4 (de) Elektrisches Heizmodul zur Luftstromerwärmung, insbesondere zur Heizung und Belüftung von Sitzen
DE102012109801B4 (de) Elektrische Heizvorrichtung
DE102010027704A1 (de) Wärmeaustauscher
WO2003098124A1 (fr) Echangeur de chaleur, destine en particulier a une installation de chauffage ou de climatisation d'un vehicule automobile
EP2710318A1 (fr) Echangeur de chaleur à lamelles
EP1203923B1 (fr) Echangeur de chaleur, en particulier sèche-linge à condensation
EP3332206B1 (fr) Échangeur de chaleur
DE202017102436U1 (de) Wärmetauscher mit Mikrokanal-Struktur oder Flügelrohr-Struktur
DE102006031676A1 (de) Turbulenzblech und Verfahren zur Herstellung eines Turbulenzbleches
DE602006000675T2 (de) Wellrippe für integralgefertigten Wärmetäuscher
EP1662223B1 (fr) Echangeur de chaleur et son procédé de fabrication
EP3322942A1 (fr) Procédé de fabrication d'un élément à ailettes ondulées, élément à ailettes ondulées et registre de chauffage
EP1593536B1 (fr) Procédé et dispositif pour séparer l'écoulement de fluides dans un dispositif de chauffage
EP3491323B1 (fr) Échangeur de chaleur présentant une structure à micro-canal ou une structure à tube à ailettes
EP0268831B1 (fr) Lamelle
DE19846347C2 (de) Wärmeaustauscher aus Aluminium oder einer Aluminium-Legierung
EP1134534A1 (fr) Feuille pour un évaporateur constitué de feuilles
EP1248063B1 (fr) Echangeur de chaleur
DE102020000274A1 (de) Verfahren zur Herstellung eines Rippen-Platten-Wärmetauschers
EP3009780B1 (fr) Fluide caloporteur

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11749729

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2011749729

Country of ref document: EP

122 Ep: pct application non-entry in european phase

Ref document number: 11749729

Country of ref document: EP

Kind code of ref document: A1