EP2962056B1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
EP2962056B1
EP2962056B1 EP14708822.3A EP14708822A EP2962056B1 EP 2962056 B1 EP2962056 B1 EP 2962056B1 EP 14708822 A EP14708822 A EP 14708822A EP 2962056 B1 EP2962056 B1 EP 2962056B1
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EP
European Patent Office
Prior art keywords
heat exchanger
flow channels
channels
header
flow
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.)
Active
Application number
EP14708822.3A
Other languages
German (de)
French (fr)
Other versions
EP2962056A1 (en
Inventor
Gottfried DÜRR
Uwe FÖRSTER
Martin Kaspar
Wolfgang Seewald
Siegfried Tews
Christoph Walter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
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Publication date
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Publication of EP2962056A1 publication Critical patent/EP2962056A1/en
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Publication of EP2962056B1 publication Critical patent/EP2962056B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers

Definitions

  • the invention relates to a heat exchanger according to the preamble of the first claim 1.
  • a heat exchanger is made of EP 1 998 133 A1 known.
  • heat pumps can be used in addition to known PTC radiators.
  • the lowest possible energy consumption of the air conditioning system is preferred.
  • the use of a heat pump is advantageous compared to the use of a PTC radiator because the energy requirement is significantly lower.
  • the energy requirement of a heat pump is approximately half that of a PTC radiator.
  • the heat exchanger which acts as a condenser in the heat pump operation of an air conditioning system and is thus used as a heating source for heating the passenger compartment, is often integrated in the air conditioning unit itself. As a result, only a small space is available for the capacitor. This is particularly disadvantageous for the temperature distribution within the capacitor.
  • two-row arrangements of the condenser can be used. These are characterized by the fact that two rows of tubes are arranged one behind the other in the direction of air flow.
  • the object of the present invention is achieved by a heat exchanger with the features according to claim 1.
  • An embodiment of the invention relates to a heat exchanger with mutually adjacent first flow channels and second flow channels, the first flow channels and the second flow channels being accommodated in a first manifold at a first of their end regions and in a second manifold at a second of their end regions, the first manifold has a first bottom and a first cover and the second header has a second bottom and a second lid, the first bottom and the second bottom having a plurality of openings into which the end regions of the flow channels are received, the first header having a first Longitudinal channel and a second longitudinal channel, wherein the first flow channels are in fluid communication with the first longitudinal channel and the second flow channels are in fluid communication with the second longitudinal channel, wherein the second header has a second cover, which r forms transverse channels with the second bottom of the second header pipe, a first flow channel and a second flow channel each being in fluid communication with one another via a transverse channel.
  • the heat exchanger is designed in such a way that a fluid can flow via a fluid inlet into one of the longitudinal channels, for example the first longitudinal channel, of the first manifold and can be distributed there via the flow channels assigned to the respective longitudinal channel.
  • the fluid then flows through the respective flow channels, for example the first flow channels, and is deflected in the second manifold into the respective other flow channels, for example the second flow channels.
  • the second manifold forms transverse channels, each of which fluidly connects a first flow channel to a second flow channel.
  • the fluid then flows back into the first manifold, however here in the other longitudinal channel, for example the second longitudinal channel. From there, the fluid can flow out of the heat exchanger via a fluid outlet.
  • the first and the second flow channels are preferably each arranged in rows and adjacent to one another, so that the first flow channels form the first row of the heat exchanger and the second flow channels the second row.
  • the first and the second row are arranged one behind the other in the main flow direction of the fluid which flows around the flow channels.
  • the transverse channels are oriented in such a way that flow channels from the first row are connected to flow channels from the second row.
  • the longitudinal channels are oriented so that they connect several flow channels in a row.
  • an orientation across here means an orientation of an element from one row to the other row of flow channels.
  • a longitudinal orientation stands for an alignment of an element along a series of flow channels.
  • the total fluid volume required within the heat exchanger can be reduced, since the second manifold overall has a lower internal volume than a conventional manifold. This is particularly beneficial.
  • the transverse channels in the second header also provide tolerance compensation for the flow channels which are introduced into the bottoms of the header and which are formed by tubes. In addition, they facilitate the transfer of fluid from the flow channels into the manifolds by increasing the volume of the manifold at the end region of the flow channels.
  • the first cover forms pockets with the first base, which are each aligned with one of the openings of the first base and or with the ends of the flow channels.
  • the pockets in the first longitudinal channel also serve to compensate for tolerances for the tubes inserted into the openings in the first base.
  • the arrangement of the pockets is also advantageous in order to achieve a better fluid flow from the longitudinal channels into the flow channels or vice versa.
  • a preferred exemplary embodiment is characterized in that the second cover has a wave-like contour in a longitudinal section, the wave troughs in each case being in contact with the bottom of the second header tube and the wave crests with the connecting elements forming the second transverse channels.
  • the second cover can advantageously be formed from a metal strip which has a wave-like contour which has been produced, for example, by a shaping process.
  • the wave crests When assembled, the wave crests are positioned so that they face the passages of the second floor. The fluid transfer takes place from the respective flow channels into the transverse channel formed by the wave crest.
  • the first flow channels are in fluid communication with the second flow channels via the transverse channel.
  • the troughs are in direct contact with the second floor and can be soldered, glued or welded to it, for example. A fluid-tight separation of the transverse channels from one another is achieved in this way.
  • the wave valleys and the wave crests are each in a common plane, the wave-like contour being designed as a rounded wave profile or as a rectangular profile or as a trapezoidal profile.
  • the openings in the bottoms have passages, the passages being directed away from the interior of the collecting pipes towards the flow channels.
  • the passages are oriented away from the inside of the collecting pipes.
  • the passages can thus increase the stability of the heat exchanger, since the tubes of the flow channels are guided in the passages, at the same time the header tubes can be dimensioned such that the smallest possible internal volume is necessary, which leads to a reduction in the amount of fluid required.
  • the bottoms on the long sides have at least partially erected edge areas which laterally close the long channels and / or the transverse channels and / or the pockets.
  • the erected edge regions have a lower edge region which is formed by a continuous material strip, a plurality of crenellated closure elements adjoining the lower edge region at the top.
  • the at least partially raised edge areas of the floors make it easier to position the covers in the assembly process.
  • a lateral sealing of the longitudinal and / or transverse channels and / or pockets can be achieved via the edge areas.
  • the lids are advantageously dimensioned such that they are in the final assembled state on the raised edge areas and in particular on the crenellated Closure elements are in contact, which adjoin the lower edge area.
  • the fluid-tight connection between the lids and the erected edge region can then advantageously be produced by methods such as soldering, gluing or welding.
  • the at least partially erected edge regions have fixing elements, by means of which the covers can be fixed to the floors.
  • the covers can be fixed in the bottoms via the fixing elements at the edge areas until a permanent fluid-tight connection is produced. This can be achieved, for example, by means of lugs which come into contact with the lids when the lids are inserted and fix the lids.
  • the pockets in the first cover are formed by depressions which are introduced into an edge which runs laterally parallel to the first longitudinal channel and the second longitudinal channel and in each case merge into the first longitudinal channel or the second longitudinal channel .
  • the passages or the pipes of the flow channels extend over the entire width of the longitudinal channel. Since the cover regularly has an edge for the purpose of attachment to the floor, which lies flat against it, it can be advantageous to provide the edge with depressions in the areas opposite the passages. These depressions can prevent the passages from being covered by the edge of the cover and thus reducing the area over which fluid can pass between the collecting pipe and the flow channels.
  • the collecting tube can be made narrower than in a version without depressions in the edges and still have the same fluid transfer area as a wider manifold.
  • transverse channels and / or the pockets and / or the passages have a variable cross section.
  • transverse channels and / or the pockets and / or the passages have variable cross sections.
  • the passage or the transverse channel can be designed, for example, in such a way that an outflow from the flow channel is promoted, for example by the passage widening like a trumpet in the direction of fluid flow.
  • contours of the transverse channels or the passages are rounded off in order to prevent the fluid flow from jamming in the region of sharp edges or corners or being otherwise negatively influenced.
  • first longitudinal channel and / or the second longitudinal channel has one or more partition walls which subdivide the respective longitudinal channel into several sections.
  • the flow order of the heat exchanger can be influenced by arranging one or more partition walls in one or more longitudinal channels. This is particularly advantageous if it is to be achieved that the fluid in the interior of the heat exchanger should flow back and forth several times between the first and the second manifold.
  • the longitudinal channel can be divided into several sections, which are flowed through one after the other. The fluid inlet and the fluid outlet must be adjusted accordingly.
  • a further exemplary embodiment relates to the arrangement of a heat exchanger in an air conditioning system, the heat exchanger being a double-row condenser and being arranged within an air conditioning device of an air conditioning system, the first flow channels forming the first row and the second flow channels forming the second row, the first flow channels and the second flow channels can be flowed through by a first fluid and can be flowed around by a second fluid.
  • An arrangement of a heat exchanger as described above in an air conditioning system is particularly advantageous since it is characterized in particular by a compact design and can therefore be easily integrated into an air conditioning unit of an air conditioning system in the small space available. Due to the double-row design of the heat exchanger, high performance of the heat exchanger is ensured at the same time.
  • the Figure 1 shows a representation of a flow principle of a heat exchanger.
  • the heat exchanger consists of two rows of flow channels 5, 6, which are arranged one behind the other.
  • a fluid can flow via a fluid inlet 1 into a first longitudinal channel 3, which is formed by a side collecting tube.
  • the fluid is distributed within the longitudinal channel 3 to the flow channels 5 leading to the second collecting tube.
  • the fluid flows through the flow channels 5 and is deflected in the second collecting tube, which forms transverse channels 7, to the further flow channels 6, which lead back from the second collecting tube to the first collecting tube .
  • the fluid flows from the flow channels 6 into the second longitudinal channel 4, which is formed by the first manifold and through the fluid outlet 2 out of the heat exchanger.
  • a second fluid for example air, flows around the rows of flow channels 5, 6 one behind the other along the flow direction 8.
  • the Figure 2 shows a heat exchanger 10, which is essentially formed by a plurality of tubes 12, between which a plurality of heat transfer elements 11 are arranged.
  • the heat transfer elements 11 can for example be designed in a corrugated fin construction.
  • the tubes 12 with the heat transfer elements 11 together form the heat exchanger block 13 of the heat exchanger 10.
  • the individual tubes 12 each have two end regions. A first of these end areas opens into the Figure 2 collecting pipe arranged on the left 27. The second End region of the tubes 12 opens into the header tube 33 arranged on the right.
  • the right header tube 33 is in the Figure 8 to 10 explained in more detail.
  • the first header tube 27 essentially consists of a base 15 and a cover 16.
  • the base 15 has a plurality of passages 14 which receive the respective end regions of the tubes 12.
  • the passages 14 run around in the Figure 1 Openings not shown in the bottom 15.
  • passages 14 serves in particular to increase the stability of the connection between the tubes 12 and the header tube 27.
  • the passages 14 are arranged on the area of the base 15 facing away from the interior of the header tube 27 and point in the direction of the heat exchanger block 13.
  • the bottom 15 of the collecting tube 27 has edge regions 22 set up laterally.
  • the erected edge regions 22 close off the first collecting tube 27 to the side.
  • the more precise structure of the base 15 is explained in the following figures.
  • a lid 16 is inserted into the bottom 15.
  • the shape of the cover 16 forms a first longitudinal channel 17 and a second longitudinal channel 18.
  • the cover 16 has a plurality of pockets 21. These pockets are positioned in the cover 16 in such a way that the pockets 21 lie opposite the passages 14 and thus the tubes 12 in the final assembled state. The more precise structure of the cover 16 is also explained in the following figures.
  • the erected edge region 22 of the base 15 also has closure elements 20 and fixing elements 19. These fixing elements 19 are used to fasten the cover 16 to the base 15 until a final connection is established using a material process, such as soldering, gluing or welding, between the base 15 and the cover 16.
  • the closure elements 20 laterally close off the pockets 21 and / or the longitudinal channels 17, 18 in the region from the lower one Edge area 29, which is formed by a continuous strip of material, is not covered.
  • locking lugs can be bent onto the cover 16 so that they are fixed to the base 15. Protrusions projecting beyond the edge region 22 into the region of the cover 16, which prevent the cover 16 from slipping out, can also be provided, among other things.
  • the Figure 3 shows a further perspective view of the arrangement of the heat exchanger 10 Figure 2 .
  • the pockets 21, which protrude laterally beyond the longitudinal channels 17 and 18, are laterally closed by the closure elements 22.
  • the pockets 21 are aligned with the passages 14 and the tubes 12 inserted in the passages 14.
  • the pockets 21 essentially serve to facilitate the inflow or outflow of the fluid into the tubes 12.
  • the pockets 21 merge into the longitudinal channels 17 and 18, respectively.
  • a fluid can flow back and forth unhindered between the longitudinal channels 17 and 18 and the respective pockets 21.
  • the closure elements 20 are designed as a crenellated extension of the lower edge region 29 of the erected edge region 22.
  • the bottom 15 can advantageously be produced from a single metal plate by stamping and forming processes. This makes the production of the floor 15 simple and inexpensive.
  • the partition 23 can also be seen, which is formed by the cover 16.
  • the first header 27 has a B-shaped contour.
  • the back of the B is formed by the flat region 24 of the base 15 and the two arches of the B are formed by the design of the cover 16.
  • the cover 16 each has an edge 25. This edge essentially serves as a contact surface of the cover 16 on the base 15, in order to later be able to establish a material connection between the two elements.
  • the pockets 21 are introduced as depressions in this edge 25. This is particularly advantageous, since the collecting tube 27 must have a smaller width overall in order to be able to accommodate the tubes 12 and to be able to supply them with a fluid over the entire opening area of the tubes 12. If no depressions are provided in the edges 25, part of the cover 16 would cover the openings of the tubes 12 or the passages 14 and thus reduce the effective flow area of the tubes. This would adversely affect the efficiency of the heat exchanger 10.
  • the cover 16 can also be produced from a single board by simple forming processes. Overall, the manifold 27 can be produced in a simple manner and in particular can be produced inexpensively.
  • the Figure 4 shows a further perspective view of the first manifold 27.
  • the remaining heat exchanger or the heat exchanger block 13 is not shown. It is at the bottom of the flat area 24 of the Bottom 15 to recognize how a plurality of passages 14 is arranged essentially in two rows next to each other.
  • the left half of the passages 14 is assigned to the first row of tubes 12, the right half of the passages 14 is assigned to the second row of tubes 12.
  • the partition 23 of the cover 16 sits centrally between the passages 14. A separation of the inner volume of the collecting tube 27 into the longitudinal channels 17, 18 is thus achieved.
  • Each of the passages 14 is only in fluid communication with one of the longitudinal channels 17, 18.
  • the Figure 5 shows a perspective view of the base 15, as has already been shown in the previous figures.
  • the passages 14 it is possible to see in particular the flat area 24 of the base 15 and the erected edge area 22 with the lower edge area 29, the fixing elements 19 and the crenellated closure elements 20 which move upward away from the flat area 24 to the Connect lower edge area 29.
  • the Figure 6 shows another view of the bottom 15, as in Figure 5 has already been shown.
  • the view is directed towards the inside of the base 15 and in particular onto the flat area 24 of the base 15.
  • 6 shows in particular the design of the fixing elements 19, which are designed as lugs and protrude beyond the erected edge region 22 to the center of the base 15.
  • a cover 16 must be pressed past the lugs 19 into the base 15 with a certain amount of force. The lugs 19 then prevent the cover 16 from accidentally falling out of the base 15 until a final material connection is produced.
  • the Figure 7 shows a perspective view of the lid 16.
  • the view is directed towards the inside of the cover 16.
  • the structure of the edge 25 with the plurality of depressions 26 can be seen.
  • the depressions 26 form the pockets 21, which allow the fluid to flow in over the entire width of the opening of the tubes 12 or the passages 14.
  • the pockets 21 formed by the depressions 26 merge into the associated longitudinal channels 17 and 18, respectively.
  • the depressions 26 are c-shaped, the open side of the c-shaped arch being oriented in the direction of the flat region 24 of the base 15.
  • different configurations of the depressions can also be provided. Roughly rectangular or trapezoidal depressions are foreseeable.
  • the design of the closure elements which are connected to the lower edge region of the erected edge regions may have to be adapted to a different design of the closure elements.
  • a different design of the cover can also be provided. Any design that provides separate longitudinal channels that allows a first row of the flow channels to be in fluid communication with a first longitudinal channel and a second row of the flow channels with a second longitudinal channel to be in fluid communication can be used for an implementation according to the invention .
  • FIG. 7 shown version of the cover 16 is particularly easy and inexpensive to produce.
  • edges 25 and the foot region of the partition 23 serve as contact surfaces between the cover 16 and the base 15.
  • the arrangement of the edges 25 laterally to the longitudinal channels 17 and 18 is particularly important in order to be able to produce a sufficient tightness of the collecting tube 27.
  • the edges 25 increase the contact area between cover 16 and base 15, which can be used to connect the two elements. This is particularly important when used as a condenser in an air conditioning system, since high pressures can sometimes occur here and the heat exchanger must be permanently sealed.
  • the Figure 8 shows a further perspective view of the heat exchanger 10 with the heat exchanger block 13.
  • the right header pipe 33 In comparison to the left header pipe 27, the right header pipe 33 has a plurality of transverse channels 34.
  • the bottom of the collecting tube 33 is identical to the bottom 15 of the collecting tube 27, which has already been described in the previous figures. Only the cover 30 of the collecting pipe 33 differs from the design of the collecting pipe 27. The exact structure of the cover 30 is explained in the following figures.
  • each manifold which allows the interior volume to be divided into a plurality of transverse channels, so that at least one flow channel of the first row can be brought into fluid communication with at least one flow channel of the second row via one of the transverse channels, can be used for an inventive design.
  • the plurality of transverse channels 34 deflect the fluid which flows through the tubes 12 of one row into the collecting tube 33 into the tube of the second row which is at the same height in each case.
  • Each of the transverse channels 34 is in fluid communication with a front row tube and a rear row tube.
  • This design of the collecting pipe 33 means that the required internal volume within the collecting pipe 33 is minimal.
  • Each of the tubes 12 is in fluid communication with its corresponding tube of the second row via only one transverse channel 34. In this way, there is also no disadvantageous accumulation of the fluid inside the collecting tube 33.
  • the Figure 9 shows a perspective view of the header tube 33 without the remaining heat exchanger block 13.
  • the header tube 33 essentially consists of a base 15 already described, which also has a plurality of passages 14, has laterally erected edge regions 22 and a cover 30, which has a longitudinal section has a wave-like contour.
  • the closure elements 20 each close the transverse channels 34 to the side.
  • Each of the transverse channels 34 is positioned such that it lies in alignment with two passages 14 of the floor.
  • the individual transverse channels 34 are separated from one another in a fluid-tight manner by connecting points between the cover 30 and the base 15.
  • the cover 30 is fixed within the base 15 via the fixing elements 19 until a material connection has been established between the two elements.
  • the Figure 10 shows the cover 30 of the collecting tube 33.
  • the cover 30 has a wave-like contour in longitudinal section.
  • the wave valleys 32 and the wave crests 31 are each in one plane.
  • the cover 30 can be particularly easily connected to the flat region 24 of the base 15.
  • the lid 30 has in the Figure 10 Embodiment shown a wave-like contour, the waves being formed by trapezoidal sections.
  • the connecting elements 35 of the cover 30, which connect the wave troughs 32 to the wave crests 31, are each aligned such that the transverse channel 34 tapers from the wave trough 32 to the wave crest 31.
  • Two connecting elements 35 delimiting a transverse channel 34 are inclined towards one another.
  • wave profiles can also be provided, which are formed by rectangular sections in which the connecting elements are arranged at a right angle to the respective wave trough or to the wave crest.
  • a wave contour following a sine curve can also be provided.
  • the troughs 32 each form the contact points between the cover 30 and the bottom 15, via which the cohesive connection takes place.
  • the transverse channels 34 are formed by the connecting elements 35, which connect the wave troughs 32 to the wave crests 31 and the wave crests 31 themselves. Fluid communication between the pipes of the first row and the second row is ensured via these transverse channels.
  • the cover 30 can be produced from a blank by a forming process.
  • the manufacture of the cover 30 is thus particularly simple and inexpensive. Still is dimensioning of the cover 30 to a heat exchanger with a larger or smaller number of tubes is possible in a simple manner.
  • any configuration of the cover which permits the formation of a plurality of transverse channels for connecting the flow channels of the first row to flow channels of the second row, can be provided.

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

Description

Technisches GebietTechnical field

Die Erfindung betrifft einen Wärmeübertrager nach dem Oberbegriff des ersten Anspruchs 1. Solch ein Wärmeübertrager ist aus EP 1 998 133 A1 bekannt.The invention relates to a heat exchanger according to the preamble of the first claim 1. Such a heat exchanger is made of EP 1 998 133 A1 known.

Stand der TechnikState of the art

Für die Klimatisierung, insbesondere für die Beheizung, von Elektrofahrzeugen und Hybridfahrzeugen aber auch in konventionell angetriebenen Kraftfahrzeugen, können neben bekannten PTC-Heizkörpern auch Wärmepumpen eingesetzt werden. Um eine möglichst hohe Reichweite der Fahrzeuge zu ermöglichen, ist ein möglichst geringer Energiebedarf des Klimatisierungssystems zu bevorzugen.For air conditioning, in particular for heating, electric vehicles and hybrid vehicles, but also in conventionally powered vehicles, heat pumps can be used in addition to known PTC radiators. Around To enable the vehicles to have the longest possible range, the lowest possible energy consumption of the air conditioning system is preferred.

Der Einsatz einer Wärmepumpe ist im Vergleich zu dem Einsatz eines PTC-Heizkörpers vorteilhaft, da der Energiebedarf deutlich geringer ist. Der Energiebedarf einer Wärmepumpe ist ungefähr halb so groß, wie der Energiebedarf eines PTC-Heizkörpers.The use of a heat pump is advantageous compared to the use of a PTC radiator because the energy requirement is significantly lower. The energy requirement of a heat pump is approximately half that of a PTC radiator.

Der Wärmeübertrager, der im Wärmepumpenbetrieb einer Klimaanlage als Kondensator fungiert und damit als Heizquelle zum Aufheizen des Fahrgastinnenraumes verwendet wird, ist oft im Klimagerät selbst integriert. Daraus resultiert, dass für den Kondensator nur ein geringer Bauraum zur Verfügung steht. Dies ist besonders nachteilig für die Temperaturverteilung innerhalb des Kondensators.The heat exchanger, which acts as a condenser in the heat pump operation of an air conditioning system and is thus used as a heating source for heating the passenger compartment, is often integrated in the air conditioning unit itself. As a result, only a small space is available for the capacitor. This is particularly disadvantageous for the temperature distribution within the capacitor.

Um dennoch eine vorteilhafte Temperaturverteilung im Kondensator, insbesondere bei der Kondensation des Kältemittels, zu erreichen, können zweireihige Anordnungen des Kondensators verwendet werden. Diese zeichnen sich dadurch aus, dass zwei Reihen von Rohren in Luftdurchströmungsrichtung hintereinander angeordnet sind.In order nevertheless to achieve an advantageous temperature distribution in the condenser, in particular in the condensation of the refrigerant, two-row arrangements of the condenser can be used. These are characterized by the fact that two rows of tubes are arranged one behind the other in the direction of air flow.

Im Stand der Technik sind für die Realisierung von zweireihigen Kondensatoren Ausführungen bekannt, die jeweils zwei Sammelrohre pro Reihe aufweisen. Daraus resultieren Nachteile, wie eine höhere benötigte Kältemittelmenge, eine aufwändigere Verlötung der Komponenten oder eine schwer herzustellende Dichtheit der Verbindungen.In the prior art, designs are known for the implementation of double-row capacitors, each of which has two collecting tubes per row. This results in disadvantages, such as a higher amount of refrigerant required, more complex soldering of the components or a difficult tightness of the connections.

Darstellung der Erfindung, Aufgabe, Lösung, VorteilePresentation of the invention, task, solution, advantages

Es ist die Aufgabe der vorliegenden Erfindung einen Wärmeübertrager bereitzustellen, der gegenüber dem Stand der Technik optimiert ist. Weiterhin ist es die Aufgabe der Erfindung eine Anordnung eines solchen Wärmeübertragers in einer Klimaanlage bereitzustellen.It is the object of the present invention to provide a heat exchanger which is optimized compared to the prior art. It is still the task the invention provide an arrangement of such a heat exchanger in an air conditioning system.

Die Aufgabe der vorliegenden Erfindung wird durch einen Wärmeübertrager mit den Merkmalen gemäß Anspruch 1 gelöst.The object of the present invention is achieved by a heat exchanger with the features according to claim 1.

Ein Ausführungsbeispiel der Erfindung betrifft einen Wärmeübertrager mit zueinander benachbarten ersten Strömungskanälen und zweiten Strömungskanälen, wobei die ersten Strömungskanäle und die zweiten Strömungskanäle an einem ersten ihrer Endbereiche in einem ersten Sammelrohr und an einem zweiten ihrer Endberieche in einem zweiten Sammelrohr aufgenommen sind, wobei das erste Sammelrohr einen ersten Boden und einen ersten Deckel aufweist und das zweite Sammelrohr einen zweiten Boden und einen zweiten Deckel aufweist, wobei der erste Boden und der zweite Boden eine Mehrzahl von Öffnungen aufweisen, in welche die Endbereiche der Strömungskanäle aufgenommen sind, wobei das erste Sammelrohr einen ersten Längskanal und einen zweiten Längskanal aufweist, wobei die ersten Strömungskanäle mit dem ersten Längskanal in Fluidkommunikation stehen und die zweiten Strömungskanäle mit dem zweiten Längskanal in Fluidkommunikation stehen, wobei das zweite Sammelrohr einen zweiten Deckel aufweist, welcher mit dem zweiten Boden des zweiten Sammelrohres Querkanäle ausbildet, wobei jeweils ein erster Strömungskanal und ein zweiter Strömungskanal über einen Querkanal miteinander in Fluidkommunikation stehen.An embodiment of the invention relates to a heat exchanger with mutually adjacent first flow channels and second flow channels, the first flow channels and the second flow channels being accommodated in a first manifold at a first of their end regions and in a second manifold at a second of their end regions, the first manifold has a first bottom and a first cover and the second header has a second bottom and a second lid, the first bottom and the second bottom having a plurality of openings into which the end regions of the flow channels are received, the first header having a first Longitudinal channel and a second longitudinal channel, wherein the first flow channels are in fluid communication with the first longitudinal channel and the second flow channels are in fluid communication with the second longitudinal channel, wherein the second header has a second cover, which r forms transverse channels with the second bottom of the second header pipe, a first flow channel and a second flow channel each being in fluid communication with one another via a transverse channel.

Der Wärmeübertrager ist derart gestaltet, dass ein Fluid über einen Fluideinlass in einen der Längskanäle, beispielsweise den ersten Längskanal, des ersten Sammelrohres einströmen kann und sich dort über die dem jeweiligen Längskanal zugeordneten Strömungskanäle verteilen kann. Das Fluid durchströmt dann die jeweiligen Strömungskanäle, beispielsweise die ersten Strömungskanäle, und wird im zweiten Sammelrohr in die jeweils anderen Strömungskanäle, beispielsweise die zweiten Strömungskanäle, umgelenkt. Hierzu bildet das zweite Sammelrohr Querkanäle aus, welche jeweils einen ersten Strömungskanal mit einem zweiten Strömungskanal fluidisch verbinden. Das Fluid strömt anschließend zurück in das erste Sammelrohr, jedoch hier in den jeweils anderen Längskanal, beispielsweise den zweiten Längskanal. Von dort kann das Fluid über einen Fluidauslass aus dem Wärmeübertrager ausströmen.The heat exchanger is designed in such a way that a fluid can flow via a fluid inlet into one of the longitudinal channels, for example the first longitudinal channel, of the first manifold and can be distributed there via the flow channels assigned to the respective longitudinal channel. The fluid then flows through the respective flow channels, for example the first flow channels, and is deflected in the second manifold into the respective other flow channels, for example the second flow channels. For this purpose, the second manifold forms transverse channels, each of which fluidly connects a first flow channel to a second flow channel. The fluid then flows back into the first manifold, however here in the other longitudinal channel, for example the second longitudinal channel. From there, the fluid can flow out of the heat exchanger via a fluid outlet.

Die ersten und die zweiten Strömungskanäle sind vorzugsweise jeweils in Reihen angeordnet und zueinander benachbart, so dass die ersten Strömungskanäle die erste Reihe des Wärmeübertragers bilden und die zweiten Strömungskanäle die zweite Reihe. Die erste und die zweite Reihe sind in Hauptströmungsrichtung des Fluids, welches die Strömungskanäle umströmt, hintereinander angeordnet.The first and the second flow channels are preferably each arranged in rows and adjacent to one another, so that the first flow channels form the first row of the heat exchanger and the second flow channels the second row. The first and the second row are arranged one behind the other in the main flow direction of the fluid which flows around the flow channels.

Die Querkanäle sind so orientiert, dass jeweils Strömungskanäle aus der ersten Reihe mit Strömungskanälen aus der zweiten Reihe verbunden werden. Die Längskanäle sind hingegen so orientiert, dass sie mehrere Strömungskanäle einer Reihe miteinander verbinden. Allgemein steht eine Orientierung quer hier für eine Ausrichtung eines Elementes von einer Reihe zu der jeweils anderen Reihe von Strömungskanälen. Eine Orientierung längs steht hier für eine Ausrichtung eines Elementes entlang einer Reihe von Strömungskanälen.The transverse channels are oriented in such a way that flow channels from the first row are connected to flow channels from the second row. The longitudinal channels, however, are oriented so that they connect several flow channels in a row. Generally, an orientation across here means an orientation of an element from one row to the other row of flow channels. A longitudinal orientation here stands for an alignment of an element along a series of flow channels.

Durch eine fluidische Verbindung von jeweils einem ersten Strömungskanal mit jeweils einem zweiten Strömungskanal, kann das insgesamt benötigte Fluidvolumen innerhalb des Wärmeübertragers reduziert werden, da das zweite Sammelrohr insgesamt ein niedrigeres Innenvolumen aufweist, als ein konventionelles Sammelrohr. Dies ist besonders vorteilhaft.By fluidically connecting a first flow channel with a second flow channel, the total fluid volume required within the heat exchanger can be reduced, since the second manifold overall has a lower internal volume than a conventional manifold. This is particularly beneficial.

Die Querkanäle im zweiten Sammelrohr stellen darüber hinaus einen Toleranzausgleich für die in die Böden der Sammelrohre eingeführten Strömungskanäle dar, welche durch Rohre gebildet sind. Zudem erleichtern sie den Fluidübertritt von den Strömungskanälen in die Sammelrohre, indem sie das Volumen des Sammelrohres am Endbereich der Strömungskanäle erhöhen.The transverse channels in the second header also provide tolerance compensation for the flow channels which are introduced into the bottoms of the header and which are formed by tubes. In addition, they facilitate the transfer of fluid from the flow channels into the manifolds by increasing the volume of the manifold at the end region of the flow channels.

Weiterhin vorteilhaft ist es, wenn der erste Deckel mit dem ersten Boden Taschen ausbildet, welche jeweils in einer Flucht mit einer der Öffnungen des ersten Bodens und oder mit den Enden der Strömungskanäle angeordnet sind.It is furthermore advantageous if the first cover forms pockets with the first base, which are each aligned with one of the openings of the first base and or with the ends of the flow channels.

Die Taschen im ersten Längskanal dienen ähnlich wie die Querkanäle im zweiten Strömungskanal auch einem Toleranzausgleich für die in die Öffnungen des ersten Bodens eingesteckten Rohre. Außerdem ist die Anordnung der Taschen vorteilhaft, um eine bessere Fluidströmung von den Längskanälen in die Strömungskanäle oder umgekehrt zu erzielen.Similar to the transverse channels in the second flow channel, the pockets in the first longitudinal channel also serve to compensate for tolerances for the tubes inserted into the openings in the first base. The arrangement of the pockets is also advantageous in order to achieve a better fluid flow from the longitudinal channels into the flow channels or vice versa.

Ein bevorzugtes Ausführungsbeispiel ist dadurch gekennzeichnet, dass der zweite Deckel in einem Längsschnitt eine wellenartige Kontur aufweist, wobei jeweils die Wellentäler mit dem Boden des zweiten Sammelrohres in Kontakt stehen und die Wellenberge mit den Verbindungselementen die zweiten Querkanäle bilden.A preferred exemplary embodiment is characterized in that the second cover has a wave-like contour in a longitudinal section, the wave troughs in each case being in contact with the bottom of the second header tube and the wave crests with the connecting elements forming the second transverse channels.

Der zweite Deckel kann vorteilhafterweise aus einem Metallstreifen gebildet sein, der eine wellenartige Kontur aufweist, welche beispielsweise durch einen Umformvorgang erzeugt worden ist. Die Wellenberge sind im endmontierten Zustand so positioniert, dass sie den Durchzügen des zweiten Bodens gegenüberliegen. Der Fluidübertritt erfolgt aus den jeweiligen Strömungskanälen in den durch den Wellenberg gebildeten Querkanal. Über den Querkanal stehen die ersten Strömungskanäle mit den zweiten Strömungskanälen in Fluidkommunikation.The second cover can advantageously be formed from a metal strip which has a wave-like contour which has been produced, for example, by a shaping process. When assembled, the wave crests are positioned so that they face the passages of the second floor. The fluid transfer takes place from the respective flow channels into the transverse channel formed by the wave crest. The first flow channels are in fluid communication with the second flow channels via the transverse channel.

Die Wellentäler stehen dabei direkt mit dem zweiten Boden in Kontakt und können beispielsweise mit diesem verlötet, verklebt oder verschweißt sein. Auf diese Weise wird eine fluiddichte Trennung der Querkanäle voneinander erreicht.The troughs are in direct contact with the second floor and can be soldered, glued or welded to it, for example. A fluid-tight separation of the transverse channels from one another is achieved in this way.

Außerdem ist es zu bevorzugen, wenn die Wellentäler und die Wellenberge jeweils in einer gemeinsamen Ebene liegen, wobei die wellenartige Kontur als abgerundetes Wellenprofil oder als Rechteckprofil oder als Trapezprofil ausgestaltet ist.In addition, it is preferable if the wave valleys and the wave crests are each in a common plane, the wave-like contour being designed as a rounded wave profile or as a rectangular profile or as a trapezoidal profile.

Dies ist insbesondere vorteilhaft, da es aufgrund der Anordnung der Wellentäler und der Wellenberge in jeweils einer Ebene besonders einfach ist, den Deckel mit dem Boden über ein stoffschlüssiges Verfahren zu verbinden, da große Bereiche des Deckels flächig mit Bereichen des Bodens in Kontakt stehen.This is particularly advantageous since, due to the arrangement of the wave troughs and the wave crests in each plane, it is particularly simple to connect the cover to the bottom by means of an integral process, since large areas of the cover are in flat contact with areas of the bottom.

Auch ist es zu bevorzugen, wenn die Öffnungen in den Böden Durchzüge aufweisen, wobei die Durchzüge vom Inneren der Sammelrohre weg zu den Strömungskanälen hin gerichtet sind.It is also preferable if the openings in the bottoms have passages, the passages being directed away from the interior of the collecting pipes towards the flow channels.

Um das Innenvolumen der Sammelrohre möglichst gering zu halten, ist es besonders vorteilhaft, wenn die Durchzüge vom Inneren der Sammelrohre weg orientiert sind. Durch die Durchzüge kann so eine Erhöhung der Stabilität des Wärmeübertragers erreicht werden, da die Rohre der Strömungskanäle in den Durchzügen geführt werden, gleichzeitig können die Sammelrohre derart dimensioniert werden, dass ein möglichst geringes Innenvolumen notwendig ist, was zu einer Reduzierung der benötigten Fluidmenge führt.In order to keep the internal volume of the collecting pipes as low as possible, it is particularly advantageous if the passages are oriented away from the inside of the collecting pipes. The passages can thus increase the stability of the heat exchanger, since the tubes of the flow channels are guided in the passages, at the same time the header tubes can be dimensioned such that the smallest possible internal volume is necessary, which leads to a reduction in the amount of fluid required.

In einer besonders günstigen Ausgestaltung der Erfindung ist es außerdem vorgesehen, dass die Böden an den Längsseiten zumindest teilweise aufgestellte Randbereiche aufweisen, welche die Längskanäle und/oder die Querkanäle und/oder die Taschen seitlich abschließen.In a particularly advantageous embodiment of the invention, it is also provided that the bottoms on the long sides have at least partially erected edge areas which laterally close the long channels and / or the transverse channels and / or the pockets.

Weiterhin ist es zu bevorzugen, wenn die aufgestellten Randbereiche einen unteren Randbereich aufweisen, welcher durch einen durchgehenden Materialstreifen gebildet ist, wobei sich eine Mehrzahl von zinnenartigen Verschlusselementen nach oben hin an den unteren Randbereich anschließen.Furthermore, it is preferable if the erected edge regions have a lower edge region which is formed by a continuous material strip, a plurality of crenellated closure elements adjoining the lower edge region at the top.

Die zumindest teilweise aufgestellten Randbereiche der Böden erleichtern das Positionieren der Deckel im Montageprozess. Gleichzeitig ist über die Randbereiche eine seitliche Abdichtung der Längs- und/oder Querkanäle und/oder Taschen zu erreichen. Die Deckel sind vorteilhafterweise so dimensioniert, dass sie im endmontierten Zustand an den aufgestellten Randbereichen und insbesondere an den zinnenartigen Verschlusselementen anliegen, welche sich an den unteren Randbereich anschließen. Die fluiddichte Verbindung zwischen den Deckeln und dem aufgestellten Randbereich lässt sich dann vorteilhafterweise durch Verfahren wie beispielsweise Löten, Kleben oder Schweißen erzeugen.The at least partially raised edge areas of the floors make it easier to position the covers in the assembly process. At the same time, a lateral sealing of the longitudinal and / or transverse channels and / or pockets can be achieved via the edge areas. The lids are advantageously dimensioned such that they are in the final assembled state on the raised edge areas and in particular on the crenellated Closure elements are in contact, which adjoin the lower edge area. The fluid-tight connection between the lids and the erected edge region can then advantageously be produced by methods such as soldering, gluing or welding.

In einer alternativen Ausgestaltung der Erfindung kann es vorgesehen sein, dass die zumindest teilweise aufgestellten Randbereiche Fixierelemente aufweisen, über welche die Deckel an den Böden fixierbar sind.In an alternative embodiment of the invention it can be provided that the at least partially erected edge regions have fixing elements, by means of which the covers can be fixed to the floors.

Über die Fixierelemente an den Randbereichen können die Deckel in den Böden fixiert werden, bis eine dauerhafte fluiddichte Verbindung erzeugt wird. Dies kann beispielsweise über Nasen erreicht werden, welche beim Einsetzen der Deckel mit diesen in Kontakt geraten und die Deckel fixieren.The covers can be fixed in the bottoms via the fixing elements at the edge areas until a permanent fluid-tight connection is produced. This can be achieved, for example, by means of lugs which come into contact with the lids when the lids are inserted and fix the lids.

Gemäß einer besonders bevorzugten Weiterbildung der Erfindung kann es vorgesehen sein, dass die Taschen im ersten Deckel durch Vertiefungen gebildet sind, welche in einen seitlich parallel zum ersten Längskanal und zum zweiten Längskanal verlaufenden Rand eingebracht sind und jeweils in den ersten Längskanal oder den zweiten Längskanal übergehen.According to a particularly preferred development of the invention, it can be provided that the pockets in the first cover are formed by depressions which are introduced into an edge which runs laterally parallel to the first longitudinal channel and the second longitudinal channel and in each case merge into the first longitudinal channel or the second longitudinal channel .

Um den Bauraum möglichst optimal zu nutzen, kann es vorgesehen sein, dass sich die Durchzüge, beziehungsweise die Rohre der Strömungskanäle über die gesamte Breite des Längskanals erstrecken. Da der Deckel zum Zwecke der Befestigung am Boden regelmäßig einen Rand aufweist, welcher flach an diesem anliegt, kann es vorteilhaft sein, den Rand in den Bereichen, welche den Durchzügen gegenüber liegen, mit Vertiefungen zu versehen. Durch diese Vertiefungen kann verhindert werden, dass die Durchzüge von dem Rand des Deckels überdeckt werden und somit die Fläche, über welche ein Fluidübertritt zwischen dem Sammelrohr und den Strömungskanälen stattfinden kann, reduziert wird.In order to make the best possible use of the installation space, it can be provided that the passages or the pipes of the flow channels extend over the entire width of the longitudinal channel. Since the cover regularly has an edge for the purpose of attachment to the floor, which lies flat against it, it can be advantageous to provide the edge with depressions in the areas opposite the passages. These depressions can prevent the passages from being covered by the edge of the cover and thus reducing the area over which fluid can pass between the collecting pipe and the flow channels.

Durch eine oben beschriebene Gestaltung der Ränder kann das Sammelrohr schmaler ausgeführt werden, als in einer Ausführung ohne Vertiefungen in den Rändern und dabei trotzdem die gleiche Fluidübertrittsfläche aufweisen, wie ein breiteres Sammelrohr.By designing the edges as described above, the collecting tube can be made narrower than in a version without depressions in the edges and still have the same fluid transfer area as a wider manifold.

Darüber hinaus kann es vorteilhaft sein, wenn die Querkanäle und/oder die Taschen und/oder die Durchzüge einen veränderlichen Querschnitt aufweisen.In addition, it can be advantageous if the transverse channels and / or the pockets and / or the passages have a variable cross section.

Es ist besonders vorteilhaft, wenn die Querkanäle und/oder die Taschen und/oder die Durchzüge veränderliche Querschnitte aufweisen. Dadurch können strömungsgünstige Gestaltungen realisiert werden. Die Gestaltung des Durchzugs oder des Querkanals kann beispielsweise derart erfolgen, dass ein Ausströmen aus dem Strömungskanal begünstigt wird, etwa indem sich der Durchzug in Fluidströmungsrichtung trompetenartig erweitert. Neben eine Erweiterung oder eine Verjüngung kann beispielsweise auch vorgesehen werden, dass die Konturen der Querkanäle oder der Durchzüge abgerundet werden um zu verhindern, dass sich die Fluidströmung im Bereich von scharfen Kanten oder Ecken staut oder anderweitig negativ beeinflusst wird.It is particularly advantageous if the transverse channels and / or the pockets and / or the passages have variable cross sections. As a result, streamlined designs can be realized. The passage or the transverse channel can be designed, for example, in such a way that an outflow from the flow channel is promoted, for example by the passage widening like a trumpet in the direction of fluid flow. In addition to an enlargement or a taper, it can also be provided, for example, that the contours of the transverse channels or the passages are rounded off in order to prevent the fluid flow from jamming in the region of sharp edges or corners or being otherwise negatively influenced.

Ein weiteres bevorzugtes Ausführungsbeispiel ist dadurch gekennzeichnet, dass der erste Längskanal und/oder der zweite Längskanal eine oder mehrere Trennwände aufweist, welche den jeweiligen Längskanal in mehrere Abschnitte unterteilt.Another preferred exemplary embodiment is characterized in that the first longitudinal channel and / or the second longitudinal channel has one or more partition walls which subdivide the respective longitudinal channel into several sections.

Über die Anordnung einer oder mehrerer Trennwände in einem oder mehreren Längskanälen, kann die Durchströmungsreihenfolge des Wärmeübertragers beeinflusst werden. Besonders vorteilhaft ist dies, wenn erreicht werden soll, dass das Fluid im Inneren des Wärmeübertragers mehrfach zwischen dem ersten und dem zweiten Sammelrohr hin und her strömen soll. Durch die Trennwände kann der Längskanal in mehrere Abschnitte unterteilt werden, die nacheinander durchströmt werden. Der Fluideinlass und der Fluidauslass sind dabei entsprechend anzupassen.The flow order of the heat exchanger can be influenced by arranging one or more partition walls in one or more longitudinal channels. This is particularly advantageous if it is to be achieved that the fluid in the interior of the heat exchanger should flow back and forth several times between the first and the second manifold. Through the partition walls, the longitudinal channel can be divided into several sections, which are flowed through one after the other. The fluid inlet and the fluid outlet must be adjusted accordingly.

Die Aufgabe der Anordnung des Wärmeübertragers in einer Klimaanlage wird durch eine Anordnung mit den Merkmalen gemäß Anspruch 10 gelöst.The task of arranging the heat exchanger in an air conditioning system is achieved by an arrangement with the features according to claim 10.

Ein weiteres Ausführungsbeispiel betrifft dabei die Anordnung eines Wärmeübertragers in einer Klimaanlage, wobei der Wärmeübertrager ein zweireihiger Kondensator ist und innerhalb eines Klimagerätes einer Klimaanlage angeordnet ist, wobei die ersten Strömungskanäle die erste Reihe bilden und die zweiten Strömungskanäle die zweite Reihe bilden, wobei die ersten Strömungskanäle und die zweiten Strömungskanäle von einem ersten Fluid durchströmbar sind und von einem zweiten Fluid umströmbar sind.A further exemplary embodiment relates to the arrangement of a heat exchanger in an air conditioning system, the heat exchanger being a double-row condenser and being arranged within an air conditioning device of an air conditioning system, the first flow channels forming the first row and the second flow channels forming the second row, the first flow channels and the second flow channels can be flowed through by a first fluid and can be flowed around by a second fluid.

Eine Anordnung eines Wärmeübertragers wie oben beschrieben in einer Klimaanlage ist besonders vorteilhaft, da er sich insbesondere durch eine kompakte Bauweise auszeichnet und daher einfach in den geringen zur Verfügung stehenden Bauraum in ein Klimagerät einer Klimaanlage integrieren lässt. Durch die zweireihige Bauweise des Wärmeübertragers ist gleichzeitig eine hohe Leistungsfähigkeit des Wärmeübertragers sichergestellt.An arrangement of a heat exchanger as described above in an air conditioning system is particularly advantageous since it is characterized in particular by a compact design and can therefore be easily integrated into an air conditioning unit of an air conditioning system in the small space available. Due to the double-row design of the heat exchanger, high performance of the heat exchanger is ensured at the same time.

Vorteilhafte Weiterbildungen der vorliegenden Erfindung sind in den Unteransprüchen und der nachfolgenden Figurenbeschreibung beschrieben.Advantageous developments of the present invention are described in the subclaims and the following description of the figures.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Im Folgenden wird die Erfindung anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnungen detailliert erläutert. In den Zeichnungen zeigen:

Fig.1
ein Durchströmungsprinzip eines erfindungsgemäßen Wärmeübertragers,
Fig. 2
eine Ansicht des ersten Sammelrohres an einem Wärmeübertragerblock, wobei das Sammelrohr durch zwei Längskanäle und eine Mehrzahl von Taschen gebildet ist und der Wärmeübertragerblock aus einer Mehrzahl von Strömungskanälen gebildet ist, zwischen welchen Wärmeübertragungselemente angeordnet sind,
Fig. 3
eine weitere Ansicht des ersten Sammelrohres aus Figur 2,
Fig. 4
eine weitere Ansicht des ersten Sammelrohres mit Blick auf die von dem Inneren des Sammelrohres abgewandten Durchzüge, jedoch ohne den angeschlossenen Wärmeübertragerblock,
Fig. 5
eine weitere Ansicht des ersten Sammelrohres gemäß Figur 4 mit einem Blick auf die dem Wärmeübertragerblock zugewandte Seite des Sammelrohres,
Fig. 6
eine Ansicht eines Bodens des ersten oder des zweiten Sammelrohres, mit Blick auf die dem Wärmeübertragerblock abgewandte Seite des Bodens,
Fig. 7
eine Ansicht des Deckels des ersten Sammelrohres, mit Blick auf die Innenseite des Deckels, welcher zwei Längskanäle und eine Mehrzahl von Taschen mit dem zugehörigen Boden ausbildet,
Fig. 8
zeigt eine Ansicht des zweiten Sammelrohres an dem Wärmeübertragerblock, wobei das zweite Sammelrohr eine Mehrzahl von Querkanälen ausbildet, über welche die ersten und die zweiten Strömungskanäle miteinander in Fluidkommunikation stehen,
Fig. 9
eine perspektivische Seitenansicht des zweiten Sammelrohres, ohne den Wärmeübertragerblock, und
Fig. 10
eine perspektivische Ansicht des zweiten Deckels des zweiten Sammelrohres, wobei der Deckel eine wellenartige Kontur aufweist.
The invention is explained in detail below using exemplary embodiments with reference to the drawings. The drawings show:
Fig. 1
a flow principle of a heat exchanger according to the invention,
Fig. 2
3 shows a view of the first header pipe on a heat exchanger block, the header pipe being formed by two longitudinal channels and a plurality of pockets and the heat exchanger block being formed from a plurality of flow channels, between which heat transfer elements are arranged,
Fig. 3
another view of the first manifold from Figure 2 ,
Fig. 4
5 shows a further view of the first collecting pipe with a view of the passages facing away from the inside of the collecting pipe, but without the connected heat exchanger block,
Fig. 5
another view of the first manifold according to Figure 4 with a view of the side of the manifold facing the heat exchanger block,
Fig. 6
2 shows a view of a bottom of the first or of the second header pipe, with a view of the side of the bottom facing away from the heat exchanger block,
Fig. 7
1 shows a view of the cover of the first collecting tube, with a view of the inside of the cover, which forms two longitudinal channels and a plurality of pockets with the associated base,
Fig. 8
FIG. 2 shows a view of the second header pipe on the heat exchanger block, the second header pipe forming a plurality of transverse channels via which the first and second flow channels are in fluid communication with one another,
Fig. 9
a side perspective view of the second manifold, without the heat exchanger block, and
Fig. 10
a perspective view of the second cover of the second header, the cover having a wave-like contour.

Bevorzugte Ausführung der ErfindungPreferred embodiment of the invention

Die Figur 1 zeigt eine Darstellung eines Durchströmungsprinzips eines Wärmeübertragers. Der Wärmeübertrager besteht dabei aus zwei Reihen von Strömungskanälen 5, 6, welche hintereinander angeordnet sind. Ein Fluid kann über einen Fluideinlass 1 in einen ersten Längskanal 3, welcher durch ein seitliches Sammelrohr gebildet ist, einströmen. Innerhalb des Längskanals 3 verteilt sich das Fluid auf die zum zweiten Sammelrohr führenden Strömungskanäle 5. Das Fluid durchströmt die Strömungskanäle 5 und wird im zweiten Sammelrohr, welches Querkanäle 7 ausbildet, auf die weiteren Strömungskanäle 6, welche vom zweiten Sammelrohr zum ersten Sammelrohr zurückführen, umgelenkt. Das Fluid strömt aus den Strömungskanälen 6 in den zweiten Längskanal 4, welcher durch das erste Sammelrohr gebildet ist und durch den Fluidauslass 2 aus dem Wärmeübertrager hinaus.The Figure 1 shows a representation of a flow principle of a heat exchanger. The heat exchanger consists of two rows of flow channels 5, 6, which are arranged one behind the other. A fluid can flow via a fluid inlet 1 into a first longitudinal channel 3, which is formed by a side collecting tube. The fluid is distributed within the longitudinal channel 3 to the flow channels 5 leading to the second collecting tube. The fluid flows through the flow channels 5 and is deflected in the second collecting tube, which forms transverse channels 7, to the further flow channels 6, which lead back from the second collecting tube to the first collecting tube . The fluid flows from the flow channels 6 into the second longitudinal channel 4, which is formed by the first manifold and through the fluid outlet 2 out of the heat exchanger.

Die hintereinanderliegenden Reihen von Strömungskanälen 5, 6 werden entlang der Strömungsrichtung 8 von einem zweiten Fluid, beispielsweise von Luft umströmt.A second fluid, for example air, flows around the rows of flow channels 5, 6 one behind the other along the flow direction 8.

Das in Figur 1 gezeigte Durchströmungsprinzip stellt eine mögliche Form der Durchströmung eines zweireihigen Wärmeübertragers dar. Durch das Einbringen von Trennwänden innerhalb der Längskanäle 3, 4 kann auch eine von dem in Figur 1 gezeigten Prinzip abweichende Strömung realisiert werden. Die Figur 1 dient zur einfachen Verständlichkeit des Aufbaus des nachfolgenden Wärmeübertragers der Figur 2 bis 10.This in Figure 1 Flow principle shown represents a possible form of flow through a two-row heat exchanger. By introducing partition walls within the longitudinal channels 3, 4, one of the in Figure 1 principle shown different flow can be realized. The Figure 1 is used for easy understanding of the structure of the subsequent heat exchanger in FIGS. 2 to 10.

Die Figur 2 zeigt einen Wärmeübertrager 10, welcher im Wesentlichen durch eine Mehrzahl von Rohren 12 gebildet ist, zwischen welchen mehrere Wärmeübertragungselemente 11 angeordnet sind. Die Wärmeübertragungselemente 11 können beispielsweise in einer Wellrippenbauweise ausgeführt sein.The Figure 2 shows a heat exchanger 10, which is essentially formed by a plurality of tubes 12, between which a plurality of heat transfer elements 11 are arranged. The heat transfer elements 11 can for example be designed in a corrugated fin construction.

Die Rohre 12 mit den Wärmeübertragungselementen 11 bilden zusammen den Wärmeübertragerblock 13 des Wärmeübertragers 10.The tubes 12 with the heat transfer elements 11 together form the heat exchanger block 13 of the heat exchanger 10.

Die einzelnen Rohre 12 weisen jeweils zwei Endbereiche auf. Ein erster dieser Endbereiche mündet in das in Figur 2 links angeordnete Sammelrohr 27. Der zweite Endbereich der Rohre 12 mündet in das rechts angeordnete Sammelrohr 33. Das rechte Sammelrohr 33 wird in den Figur 8 bis 10 näher erläutert.The individual tubes 12 each have two end regions. A first of these end areas opens into the Figure 2 collecting pipe arranged on the left 27. The second End region of the tubes 12 opens into the header tube 33 arranged on the right. The right header tube 33 is in the Figure 8 to 10 explained in more detail.

Das erste Sammelrohr 27 besteht im Wesentlichen aus einem Boden 15 und einem Deckel 16. Der Boden 15 weist eine Mehrzahl von Durchzügen 14 auf, welche die jeweiligen Endbereiche der Rohre 12 aufnehmen. Die Durchzüge 14 verlaufen um in der Figur 1 nicht gezeigte Öffnungen im Boden 15.The first header tube 27 essentially consists of a base 15 and a cover 16. The base 15 has a plurality of passages 14 which receive the respective end regions of the tubes 12. The passages 14 run around in the Figure 1 Openings not shown in the bottom 15.

Die Ausbildung von Durchzügen 14 dient insbesondere der Erhöhung der Stabilität der Verbindung zwischen den Rohren 12 und dem Sammelrohr 27. Die Durchzüge 14 sind dabei an dem vom inneren des Sammelrohrs 27 abgewandten Bereich des Bodens 15 angeordnet und weisen in Richtung des Wärmeübertragerblocks 13.The formation of passages 14 serves in particular to increase the stability of the connection between the tubes 12 and the header tube 27. The passages 14 are arranged on the area of the base 15 facing away from the interior of the header tube 27 and point in the direction of the heat exchanger block 13.

Der Boden 15 des Sammelrohrs 27 weist seitlich aufgestellte Randbereiche 22 auf. Die aufgestellten Randbereiche 22 schließen das erste Sammelrohr 27 zur Seite hin ab. Der genauere Aufbau des Bodens 15 wird in den nachfolgenden Figuren erläutert.The bottom 15 of the collecting tube 27 has edge regions 22 set up laterally. The erected edge regions 22 close off the first collecting tube 27 to the side. The more precise structure of the base 15 is explained in the following figures.

In den Boden 15 ist ein Deckel 16 eingesetzt. Der Deckel 16 bildet durch seine Formgebung einen ersten Längskanal 17 sowie einen zweiten Längskanal 18 aus. Weiterhin weist der Deckel 16 eine Mehrzahl von Taschen 21 auf. Diese Taschen sind derart im Deckel 16 positioniert, dass im endmontierten Zustand die Taschen 21 den Durchzügen 14 und damit den Rohren 12 gegenüberliegen. Der genauere Aufbau des Deckels 16 wird ebenfalls in den nachfolgenden Figuren erläutert.A lid 16 is inserted into the bottom 15. The shape of the cover 16 forms a first longitudinal channel 17 and a second longitudinal channel 18. Furthermore, the cover 16 has a plurality of pockets 21. These pockets are positioned in the cover 16 in such a way that the pockets 21 lie opposite the passages 14 and thus the tubes 12 in the final assembled state. The more precise structure of the cover 16 is also explained in the following figures.

Der aufgestellte Randbereich 22 des Bodens 15 weist weiterhin Verschlusselemente 20 und Fixierelemente 19 auf. Diese Fixierelemente 19 dienen zur Befestigung des Deckels 16 am Boden 15 bis eine endgültige Verbindung über ein stoffschlüssiges Verfahren, wie etwa Löten, Kleben oder Schweißen zwischen dem Boden 15 und dem Deckel 16 hergestellt ist. Die Verschlusselemente 20 schließen die Taschen 21 und/oder die Längskanäle 17, 18 in dem Bereich seitlich ab, der von dem unteren Randbereich 29, welcher durch einen durchgängigen Materialstreifen gebildet ist, nicht überdeckt wird.The erected edge region 22 of the base 15 also has closure elements 20 and fixing elements 19. These fixing elements 19 are used to fasten the cover 16 to the base 15 until a final connection is established using a material process, such as soldering, gluing or welding, between the base 15 and the cover 16. The closure elements 20 laterally close off the pockets 21 and / or the longitudinal channels 17, 18 in the region from the lower one Edge area 29, which is formed by a continuous strip of material, is not covered.

Für die Ausgestaltung der Fixierelemente 19 sind die aus dem Stand der Technik gängigen Gestaltungen anwendbar. Hier können zum Beispiel Rastnasen auf den Deckel 16 gebogen werden, so dass diese an dem Boden 15 fixiert sind. Auch über den Randbereich 22 in den Bereich des Deckels 16 überstehende Vorsprünge, welche ein Herausrutschen des Deckels 16 verhindern, können unter anderem vorgesehen werden.The designs customary in the prior art can be used for the design of the fixing elements 19. Here, for example, locking lugs can be bent onto the cover 16 so that they are fixed to the base 15. Protrusions projecting beyond the edge region 22 into the region of the cover 16, which prevent the cover 16 from slipping out, can also be provided, among other things.

Die Figur 3 zeigt eine weitere perspektivische Ansicht der Anordnung des Wärmeübertragers 10 aus Figur 2.The Figure 3 shows a further perspective view of the arrangement of the heat exchanger 10 Figure 2 .

In Figur 3 ist zu erkennen, dass die Taschen 21, welche seitlich über die Längskanäle 17 beziehungsweise 18 überstehen, von den Verschlusselementen 22 seitlich abgeschlossen werden. Die Taschen 21 sind in einer Flucht mit den Durchzügen 14 sowie den in den Durchzügen 14 eingesteckten Rohren 12 ausgeführt. Die Taschen 21 dienen im Wesentlichen dazu, das Einströmen beziehungsweise das Ausströmen des Fluids in die Rohre 12 zu erleichtern. Die Taschen 21 gehen dabei in die Längskanäle 17 beziehungsweise 18 über. Zwischen den Längskanälen 17 beziehungsweise 18 und den jeweiligen Taschen 21 kann ein Fluid ungehindert hin und her strömen.In Figure 3 it can be seen that the pockets 21, which protrude laterally beyond the longitudinal channels 17 and 18, are laterally closed by the closure elements 22. The pockets 21 are aligned with the passages 14 and the tubes 12 inserted in the passages 14. The pockets 21 essentially serve to facilitate the inflow or outflow of the fluid into the tubes 12. The pockets 21 merge into the longitudinal channels 17 and 18, respectively. A fluid can flow back and forth unhindered between the longitudinal channels 17 and 18 and the respective pockets 21.

Weiterhin ist über die Taschen 21 ein Toleranzausgleich der Rohre 12 möglich. Durch das Ausformen der Taschen 21 wird das innere Volumen innerhalb des ersten Sammelrohrs 27 über den Rohren 12 erhöht.Furthermore, tolerance compensation of the tubes 12 is possible via the pockets 21. By shaping the pockets 21, the inner volume within the first manifold 27 above the tubes 12 is increased.

Die Verschlusselemente 20 sind als zinnenartige Erweiterung des unteren Randbereichs 29 des aufgestellten Randbereichs 22 ausgeführt. Der Boden 15 kann vorteilhafterweise aus einer einzigen Metallplatine durch Stanzvorgänge und Umformvorgänge erzeugt werden. Dies macht die Erzeugung des Bodens 15 einfach und kostengünstig.The closure elements 20 are designed as a crenellated extension of the lower edge region 29 of the erected edge region 22. The bottom 15 can advantageously be produced from a single metal plate by stamping and forming processes. This makes the production of the floor 15 simple and inexpensive.

In Figur 3 ist weiterhin die Trennwand 23 zu erkennen, welche durch den Deckel 16 ausgebildet wird. In einem Querschnitt des ersten Sammelrohrs 27 ist zu erkennen, dass das erste Sammelrohr 27 eine B-förmige Kontur aufweist. Dabei ist der Rücken des Bs durch den ebenen Bereich 24 des Bodens 15 gebildet und die beiden Bögen des Bs durch die Ausgestaltung des Deckels 16.In Figure 3 the partition 23 can also be seen, which is formed by the cover 16. In a cross section of the first header 27 it can be seen that the first header 27 has a B-shaped contour. The back of the B is formed by the flat region 24 of the base 15 and the two arches of the B are formed by the design of the cover 16.

Links und rechts neben den Längskanälen 17, 18 weist der Deckel 16 jeweils einen Rand 25 auf. Dieser Rand dient im Wesentlichen als Anlagefläche des Deckels 16 auf dem Boden 15, um später eine stoffschlüssige Verbindung zwischen den beiden Elementen herstellen zu können.To the left and right of the longitudinal channels 17, 18, the cover 16 each has an edge 25. This edge essentially serves as a contact surface of the cover 16 on the base 15, in order to later be able to establish a material connection between the two elements.

Die Taschen 21 sind als Vertiefungen in diesen Rand 25 eingebracht. Dies ist besonders vorteilhaft, da so das Sammelrohr 27 insgesamt eine geringere Breite aufweisen muss, um die Rohre 12 aufnehmen zu können und diese über die gesamte Öffnungsfläche der Rohre 12 mit einem Fluid versorgen zu können. Werden keine Vertiefungen in den Rändern 25 vorgesehen, würde ein Teil des Deckels 16 die Öffnungen der Rohre 12 beziehungsweise der Durchzüge 14 überdecken und somit die effektiv nutzbare Durchströmungsfläche der Rohre reduzieren. Dies würde sich nachteilhaft auf die Effizienz des Wärmeübertragers 10 auswirken.The pockets 21 are introduced as depressions in this edge 25. This is particularly advantageous, since the collecting tube 27 must have a smaller width overall in order to be able to accommodate the tubes 12 and to be able to supply them with a fluid over the entire opening area of the tubes 12. If no depressions are provided in the edges 25, part of the cover 16 would cover the openings of the tubes 12 or the passages 14 and thus reduce the effective flow area of the tubes. This would adversely affect the efficiency of the heat exchanger 10.

Insbesondere hinsichtlich des bevorzugten Einsatzgebietes eines solchen Wärmeübertragers 10 innerhalb einer Klimaanlage ist eine möglichst kompakte Bauform bei möglichst maximaler Leistungsausbeute vorteilhaft.In particular with regard to the preferred area of use of such a heat exchanger 10 within an air conditioning system, a construction that is as compact as possible with the maximum possible power yield is advantageous.

Der Deckel 16 kann ebenfalls durch einfache Umformverfahren aus einer einzigen Platine erzeugt werden. Insgesamt ist das Sammelrohr 27 so auf einfache Weise herstellbar und insbesondere kostengünstig produzierbar.The cover 16 can also be produced from a single board by simple forming processes. Overall, the manifold 27 can be produced in a simple manner and in particular can be produced inexpensively.

Die Figur 4 zeigt eine weitere perspektivische Ansicht des ersten Sammelrohrs 27. In der Figur 4 ist der restliche Wärmeübertrager beziehungsweise der Wärmeübertragerblock 13 nicht dargestellt. Es ist an der Unterseite des ebenen Bereichs 24 des Bodens 15 zu erkennen, wie eine Mehrzahl von Durchzügen 14 im Wesentlichen in zwei Reihen nebeneinander angeordnet ist. Die linke Hälfte der Durchzüge 14 ist dabei der ersten Reihe der Rohre 12 zugeordnet, die rechte Hälfte der Durchzüge 14 ist der zweiten Reihe der Rohre 12 zugeordnet. Die Trennwand 23 des Deckels 16 sitzt mittig zwischen den Durchzügen 14. Somit wird eine Trennung des Innenvolumens des Sammelrohrs 27 in die Längskanäle 17, 18 erreicht. Jeder der Durchzüge 14 steht jeweils nur mit einem der Längskanäle 17, 18 in Fluidkommunikation.The Figure 4 shows a further perspective view of the first manifold 27. In the Figure 4 the remaining heat exchanger or the heat exchanger block 13 is not shown. It is at the bottom of the flat area 24 of the Bottom 15 to recognize how a plurality of passages 14 is arranged essentially in two rows next to each other. The left half of the passages 14 is assigned to the first row of tubes 12, the right half of the passages 14 is assigned to the second row of tubes 12. The partition 23 of the cover 16 sits centrally between the passages 14. A separation of the inner volume of the collecting tube 27 into the longitudinal channels 17, 18 is thus achieved. Each of the passages 14 is only in fluid communication with one of the longitudinal channels 17, 18.

In alternativen Ausführungsformen ist es auch vorsehbar, dass die Durchzüge nicht nach außen aus dem Sammelrohr hinausragen, sondern in dieses Sammelrohr hineinragen.In alternative embodiments, it is also possible to provide that the passages do not protrude outward from the collecting tube, but rather protrude into this collecting tube.

Die Figur 5 zeigt eine perspektivische Ansicht des Bodens 15, wie er bereits in den vorausgegangenen Figuren gezeigt wurde. Zu erkennen ist neben den Durchzügen 14 insbesondere der ebene Bereich 24 des Bodens 15 sowie der aufgestellte Randbereich 22 mit dem unteren Randbereich 29, den Fixierelementen 19 und den zinnenartig ausgestalteten Verschlusselementen 20, welche sich nach oben hin, weg vom ebenen Bereich 24, an den unteren Randbereich 29 anschließen.The Figure 5 shows a perspective view of the base 15, as has already been shown in the previous figures. In addition to the passages 14, it is possible to see in particular the flat area 24 of the base 15 and the erected edge area 22 with the lower edge area 29, the fixing elements 19 and the crenellated closure elements 20 which move upward away from the flat area 24 to the Connect lower edge area 29.

In alternativen Ausführungsformen ist es anstelle der zinnenartigen Ausbildung der Verschlusselemente 20 auch vorsehbar, den unteren Randbereich 29 höher auszuführen. Dies würde jedoch eine größere Materialmenge beanspruchen und somit die Materialkosten des Bodens 15 insgesamt erhöhen.In alternative embodiments, instead of the crenellated design of the closure elements 20, it is also possible to design the lower edge region 29 higher. However, this would require a larger amount of material and thus increase the overall material costs of the floor 15.

Die Figur 6 zeigt eine weitere Ansicht des Bodens 15, wie er in Figur 5 bereits gezeigt wurde. In der Figur 6 ist der Blick auf die Innenseite des Bodens 15 und insbesondere auf den ebenen Bereich 24 des Bodens 15 gerichtet. Zu erkennen ist in Figur 6 besonders die Ausgestaltung der Fixierelemente 19, welche als Nasen ausgebildet sind und über den aufgestellten Randbereich 22 zur Mitte des Bodens 15 ragen.The Figure 6 shows another view of the bottom 15, as in Figure 5 has already been shown. In the Figure 6 the view is directed towards the inside of the base 15 and in particular onto the flat area 24 of the base 15. 6 shows in particular the design of the fixing elements 19, which are designed as lugs and protrude beyond the erected edge region 22 to the center of the base 15.

Ein Deckel 16 muss mit einem gewissen Kraftaufwand vorbei an den Nasen 19 in den Boden 15 hineingedrückt werden. Die Nasen 19 verhindern sodann ein ungewolltes Herausfallen des Deckels 16 aus dem Boden 15 bis eine endgültige stoffschlüssige Verbindung erzeugt ist.A cover 16 must be pressed past the lugs 19 into the base 15 with a certain amount of force. The lugs 19 then prevent the cover 16 from accidentally falling out of the base 15 until a final material connection is produced.

In Figur 6 ist weiterhin zu erkennen, dass die Durchzüge 14 beziehungsweise die Öffnungen 28 im Boden 15 zu den Durchzügen 14 über die gesamte Breite des Bodens 15 beziehungsweise des ebenen Bereichs 24 des Bodens 15 verlaufen. Der Abstand zwischen den jeweiligen Durchzügen 14 ist als Verbindungsfläche für die Trennwand 23 mit dem ebenen Bereich 24 vorgesehen. Über die Ausgestaltung der in den vorangegangenen Figuren gezeigten Taschen 21 ist gewährleistet, dass über die volle Breite der Durchzüge 14 eine Fluidkommunikation zwischen den jeweiligen Längskanälen 17, 18 und den Rohren 12 stattfinden kann.In Figure 6 it can also be seen that the passages 14 or the openings 28 in the base 15 run to the passages 14 over the entire width of the base 15 or the flat region 24 of the base 15. The distance between the respective passages 14 is provided as a connecting surface for the partition 23 with the flat region 24. The design of the pockets 21 shown in the previous figures ensures that fluid communication between the respective longitudinal channels 17, 18 and the tubes 12 can take place over the full width of the passages 14.

Die Figur 7 zeigt eine perspektivische Ansicht des Deckels 16. In Figur 7 ist der Blick auf die Innenseite des Deckels 16 gerichtet. Neben den beiden Längskanälen 17, 18 zwischen welchen die Trennwand 23 angeordnet ist, ist der Aufbau des Randes 25 mit der Mehrzahl von Vertiefungen 26 zu erkennen. Die Vertiefungen 26 bilden die Taschen 21, welche ein Einströmen des Fluids über die gesamte Breite der Öffnung der Rohre 12 beziehungsweise der Durchzüge 14 ermöglichen. Wie in Figur 7 zu erkennen ist, gehen die von den Vertiefungen 26 gebildeten Taschen 21 in den jeweils zugehörigen Längskanal 17 beziehungsweise 18 über.The Figure 7 shows a perspective view of the lid 16. In Figure 7 the view is directed towards the inside of the cover 16. In addition to the two longitudinal channels 17, 18 between which the partition 23 is arranged, the structure of the edge 25 with the plurality of depressions 26 can be seen. The depressions 26 form the pockets 21, which allow the fluid to flow in over the entire width of the opening of the tubes 12 or the passages 14. As in Figure 7 can be seen, the pockets 21 formed by the depressions 26 merge into the associated longitudinal channels 17 and 18, respectively.

Die Vertiefungen 26 sind c-förmig ausgebildet, wobei die offene Seite des c-förmigen Bogens in Richtung des ebenen Bereichs 24 des Bodens 15 orientiert ist. In alternativen Ausführungsformen können auch abweichende Gestaltungen der Vertiefungen vorgesehen werden. Vorsehbar sind etwa rechteckig gestaltete oder trapezförmig zulaufende Vertiefungen. Die Gestaltung der Verschlusselemente, welche an den unteren Randbereich der aufgestellten Randbereiche angeschlossen sind ist gegebenenfalls an eine abweichende Gestaltung der Verschlusselemente anzupassen.The depressions 26 are c-shaped, the open side of the c-shaped arch being oriented in the direction of the flat region 24 of the base 15. In alternative embodiments, different configurations of the depressions can also be provided. Roughly rectangular or trapezoidal depressions are foreseeable. The design of the closure elements which are connected to the lower edge region of the erected edge regions may have to be adapted to a different design of the closure elements.

In alternativen Ausführungsformen ist auch eine abweichende Gestaltung des Deckels vorsehbar. Jede Gestaltung, die voneinander getrennte Längskanäle vorsieht, die es erlaubt, dass jeweils eine erste Reihe der Strömungskanäle mit einem ersten Längskanal in Fluidkommunikation steht und eine jeweils zweite Reihe der Strömungskanäle mit einem jeweils zweiten Längskanal in Fluidkommunikation steht, kann für eine erfindungsgemäße Umsetzung verwendet werden. Die in Figur 7 gezeigte Ausführung des Deckels 16 ist besonders einfach und kostengünstig zu produzieren.In alternative embodiments, a different design of the cover can also be provided. Any design that provides separate longitudinal channels that allows a first row of the flow channels to be in fluid communication with a first longitudinal channel and a second row of the flow channels with a second longitudinal channel to be in fluid communication can be used for an implementation according to the invention . In the Figure 7 shown version of the cover 16 is particularly easy and inexpensive to produce.

In der Figur 7 ist weiterhin zu erkennen, dass insbesondere die Ränder 25 sowie der Fußbereich der Trennwand 23 als Kontaktflächen zwischen dem Deckel 16 und dem Boden 15 dienen. Die Anordnung der Ränder 25 seitlich zu den Längskanälen 17 beziehungsweise 18 ist besonders wichtig, um eine ausreichende Dichtigkeit des Sammelrohrs 27 erzeugen zu können. Durch die Ränder 25 wird die Kontaktfläche zwischen Deckel 16 und Boden 15 vergrößert, die zur Verbindung der beiden Elemente herangezogen werden kann. Dies ist insbesondere bei dem Einsatz als Kondensator in einer Klimaanlage besonders wichtig, da hier teilweise hohe Drücke auftreten können und eine dauerhafte Dichtigkeit des Wärmeübertragers gewährleistet sein muss.In the Figure 7 it can also be seen that in particular the edges 25 and the foot region of the partition 23 serve as contact surfaces between the cover 16 and the base 15. The arrangement of the edges 25 laterally to the longitudinal channels 17 and 18 is particularly important in order to be able to produce a sufficient tightness of the collecting tube 27. The edges 25 increase the contact area between cover 16 and base 15, which can be used to connect the two elements. This is particularly important when used as a condenser in an air conditioning system, since high pressures can sometimes occur here and the heat exchanger must be permanently sealed.

Die Figur 8 zeigt eine weitere perspektivische Ansicht des Wärmeübertragers 10 mit dem Wärmeübertragerblock 13. In der Figur 8 ist der Blick auf das rechte Sammelrohr 33 gerichtet. Im Vergleich zu dem linken Sammelrohr 27 weist das rechte Sammelrohr 33 eine Mehrzahl von Querkanälen 34 auf. Der Boden des Sammelrohrs 33 ist mit dem Boden 15 des Sammelrohrs 27, welches bereits in den vorausgegangenen Figuren beschrieben wurde, identisch. Lediglich der Deckel 30 des Sammelrohrs 33 weicht von der Ausführung des Sammelrohrs 27 ab. Der genaue Aufbau des Deckels 30 wird in den nachfolgenden Figuren erklärt.The Figure 8 shows a further perspective view of the heat exchanger 10 with the heat exchanger block 13. In the Figure 8 is the view of the right manifold 33. In comparison to the left header pipe 27, the right header pipe 33 has a plurality of transverse channels 34. The bottom of the collecting tube 33 is identical to the bottom 15 of the collecting tube 27, which has already been described in the previous figures. Only the cover 30 of the collecting pipe 33 differs from the design of the collecting pipe 27. The exact structure of the cover 30 is explained in the following figures.

In alternativen Ausführungsformen, kann auch eine abweichende Gestaltung des Bodens für das zweite Sammelrohr vorgesehen werden. Jedes Sammelrohr, das eine Aufteilung des Innenvolumens in eine Mehrzahl von Querkanälen zulässt, so dass zumindest jeweils ein Strömungskanal der ersten Reihe mit einem zumindest einem Strömungskanal der zweiten Reihe über einen der Querkanäle in Fluidkommunikation gebracht werden kann, kann für eine erfindungsgemäße Gestaltung verwendet werden.In alternative embodiments, a different design of the base for the second header pipe can also be provided. Each manifold, which allows the interior volume to be divided into a plurality of transverse channels, so that at least one flow channel of the first row can be brought into fluid communication with at least one flow channel of the second row via one of the transverse channels, can be used for an inventive design.

Durch die Mehrzahl von Querkanälen 34 wird das Fluid, welches durch die Rohre 12 der einen Reihe in das Sammelrohr 33 einströmt, in das jeweils auf gleicher Höhe liegende Rohr der zweiten Reihe umgelenkt. Jeder der Querkanäle 34 steht mit einem Rohr der vorderen Reihe in Fluidkommunikation sowie mit einem Rohr der hinteren Reihe.The plurality of transverse channels 34 deflect the fluid which flows through the tubes 12 of one row into the collecting tube 33 into the tube of the second row which is at the same height in each case. Each of the transverse channels 34 is in fluid communication with a front row tube and a rear row tube.

Durch diese Bauweise des Sammelrohrs 33 ist das benötigte Innenvolumen innerhalb des Sammelrohrs 33 minimal. Jedes der Rohre 12 steht über nur einen Querkanal 34 mit seinem jeweils korrespondierenden Rohr der zweiten Reihe in Fluidkommunikation. Es kann auf diese Weise auch nicht zu unvorteilhaften Stauungen des Fluids innerhalb des Sammelrohrs 33 kommen.This design of the collecting pipe 33 means that the required internal volume within the collecting pipe 33 is minimal. Each of the tubes 12 is in fluid communication with its corresponding tube of the second row via only one transverse channel 34. In this way, there is also no disadvantageous accumulation of the fluid inside the collecting tube 33.

In alternativen Ausführungsformen ist es darüber hinaus auch vorsehbar, eine Mehrzahl von Rohren der ersten Reihe mit einer Mehrzahl von Rohren der zweiten Reihe über einzelne Querkanäle zu verbinden. Dadurch steigt jedoch das benötige Innenvolumen innerhalb des Sammelrohrs 33, wodurch auch der Fluidbedarf zum Betrieb des Wärmeübertragers 10 steigt.In alternative embodiments, it is also possible to provide for connecting a plurality of tubes of the first row to a plurality of tubes of the second row via individual transverse channels. As a result, however, the required internal volume inside the header pipe 33 increases, which also increases the fluid requirement for operating the heat exchanger 10.

Die Figur 9 zeigt eine perspektivische Ansicht des Sammelrohrs 33 ohne den restlichen Wärmeübertragerblock 13. Das Sammelrohr 33 besteht im Wesentlichen aus einem bereits beschriebenen Boden 15, welcher ebenfalls eine Mehrzahl von Durchzügen 14 aufweist, über seitlich aufgestellte Randbereiche 22 verfügt und einem Deckel 30, welcher im Längsschnitt eine wellenartige Kontur aufweist. Die Verschlusselemente 20 verschließen jeweils die Querkanäle 34 zur Seite hin. Jeder der Querkanäle 34 ist so positioniert, dass er mit zwei Durchzügen 14 des Bodens in einer Flucht liegt. Die einzelnen Querkanäle 34 sind durch Verbindungsstellen zwischen dem Deckel 30 und dem Boden 15 voneinander fluiddicht abgetrennt. Wie auch schon für das erste Sammelrohr 27, wird der Deckel 30 über die Fixierelemente 19 innerhalb des Bodens 15 fixiert, bis eine stoffschlüssige Verbindung zwischen den beiden Elementen hergestellt wurde.The Figure 9 shows a perspective view of the header tube 33 without the remaining heat exchanger block 13. The header tube 33 essentially consists of a base 15 already described, which also has a plurality of passages 14, has laterally erected edge regions 22 and a cover 30, which has a longitudinal section has a wave-like contour. The closure elements 20 each close the transverse channels 34 to the side. Each of the transverse channels 34 is positioned such that it lies in alignment with two passages 14 of the floor. The individual transverse channels 34 are separated from one another in a fluid-tight manner by connecting points between the cover 30 and the base 15. As well as already for the first header tube 27, the cover 30 is fixed within the base 15 via the fixing elements 19 until a material connection has been established between the two elements.

Die Figur 10 zeigt den Deckel 30 des Sammelrohrs 33. Wie bereits in Figur 9 beschrieben, weist der Deckel 30 im Längsschnitt eine wellenartige Kontur auf. Die Wellentäler 32 und die Wellenberge 31 liegen dabei jeweils in einer Ebene miteinander. Dadurch lässt sich der Deckel 30 besonders leicht an den ebenen Bereich 24 des Bodens 15 anbinden.The Figure 10 shows the cover 30 of the collecting tube 33. As already in Figure 9 described, the cover 30 has a wave-like contour in longitudinal section. The wave valleys 32 and the wave crests 31 are each in one plane. As a result, the cover 30 can be particularly easily connected to the flat region 24 of the base 15.

Der Deckel 30 weist in dem in Figur 10 gezeigten Ausführungsbeispiel eine wellenartige Kontur auf, wobei die Wellen durch trapezförmige Abschnitte gebildet sind. Die, die Wellentäler 32 mit den Wellenbergen 31 verbindenden Verbindungselemente 35 des Deckels 30 sind jeweils derart ausgerichtet, dass sich der Querkanal 34 vom Wellental 32 zum Wellenberg 31 hin verjüngt. Zwei einen Querkanal 34 begrenzende Verbindungselemente 35 sind sich einander zugeneigt.The lid 30 has in the Figure 10 Embodiment shown a wave-like contour, the waves being formed by trapezoidal sections. The connecting elements 35 of the cover 30, which connect the wave troughs 32 to the wave crests 31, are each aligned such that the transverse channel 34 tapers from the wave trough 32 to the wave crest 31. Two connecting elements 35 delimiting a transverse channel 34 are inclined towards one another.

In alternativen Ausführungsformen sind auch Wellenprofile vorsehbar, die durch rechteckige Abschnitte gebildet sind, bei denen die Verbindungselemente in einem rechten Winkel zum jeweiligen Wellental beziehungsweise zum Wellenberg angeordnet sind. In einer weiteren Alternative kann auch eine einem Sinusverlauf folgende Wellenkontur vorgesehen werden.In alternative embodiments, wave profiles can also be provided, which are formed by rectangular sections in which the connecting elements are arranged at a right angle to the respective wave trough or to the wave crest. In a further alternative, a wave contour following a sine curve can also be provided.

Die Wellentäler 32 bilden dabei jeweils die Kontaktstellen zwischen dem Deckel 30 und dem Boden 15, über welche die stoffschlüssige Verbindung erfolgt. Durch die Verbindungselemente 35, welche die Wellentäler 32 mit den Wellenbergen 31 verbinden und die Wellenberge 31 selbst, sind die Querkanäle 34 ausgebildet. Über diese Querkanäle wird die Fluidkommunikation zwischen den Rohren der ersten Reihe und der zweiten Reihe gewährleistet.The troughs 32 each form the contact points between the cover 30 and the bottom 15, via which the cohesive connection takes place. The transverse channels 34 are formed by the connecting elements 35, which connect the wave troughs 32 to the wave crests 31 and the wave crests 31 themselves. Fluid communication between the pipes of the first row and the second row is ensured via these transverse channels.

Der Deckel 30 ist durch einen Umformprozess aus einer Platine herstellbar. Damit ist die Herstellung des Deckels 30 besonders einfach und kostengünstig. Weiterhin ist eine Dimensionierung des Deckels 30 auf einen Wärmeübertrager mit einer größeren oder kleineren Anzahl von Rohren auf einfache Weise möglich.The cover 30 can be produced from a blank by a forming process. The manufacture of the cover 30 is thus particularly simple and inexpensive. Still is dimensioning of the cover 30 to a heat exchanger with a larger or smaller number of tubes is possible in a simple manner.

Die gezeigte Ausführungsform und die beschriebenen Alternativen beschränken die möglichen Ausführungsformen nicht. Jede Ausgestaltung des Deckels, welche eine Ausbildung von einer Mehrzahl von Querkanälen zur Verbindung der Strömungskanäle der ersten Reihe mit Strömungskanälen der zweiten Reihe zulässt ist vorsehbar.The embodiment shown and the alternatives described do not limit the possible embodiments. Any configuration of the cover, which permits the formation of a plurality of transverse channels for connecting the flow channels of the first row to flow channels of the second row, can be provided.

Darüber hinaus besitzen auch die Ausführungsformen der restlichen Figuren keinen beschränkenden Charakter.In addition, the embodiments of the remaining figures have no restrictive character.

Claims (12)

  1. A heat exchanger (10) with mutually adjacent first flow channels (5, 6) and second flow channels (5, 6), wherein the first flow channels (5, 6) and the second flow channels at a first end region are received in a first header (27) and at a second end region in a second header (33), wherein the first header consists of a first base (15) and a first cover (16) and the second header (33) consists of a second base (15) and a second cover (30), wherein the first base (15) and the second base (15) have a plurality of openings (28) in which the end regions of the flow channels (5, 6) are received, wherein the first header (27) has a first longitudinal channel (17) and a second longitudinal channel (18), wherein the first flow channels (5, 6) are in fluid communication with the first longitudinal channel (17) and the second flow channels (5, 6) are in fluid communication with the second longitudinal channel (18), characterised in that the second header together with the second base (15) of the second header (33) forms cross channels (34), wherein in each case a first flow channel (5, 6) and a second flow channel (5, 6) are in fluid communication with one another via a cross channel (34) .
  2. The heat exchanger (10) according to claim 1, characterised in that the first cover (16) together with the first base (15) forms pockets (21), which in each case are arranged in alignment with one of the openings (28) of the first base (15) and/or with the ends of the flow channels (5, 6).
  3. The heat exchanger (10) according to one of the preceding claims, characterised in that the second cover (30) has a wave-like contour in a longitudinal section, wherein in each case the wave troughs (32) are in contact with the base (15) of the second header (33) and the wave peaks (31) together with the connecting elements (35) form the second cross channels (34).
  4. The heat exchanger according to claim 3, characterised in that the wave troughs (32) and the wave peaks (31) in each case lie in a mutual plane, wherein the wave-like contour is made as a rounded wave profile or as a rectangular profile or as a trapezoidal profile.
  5. The heat exchanger (10) according to one of the preceding claims, characterised in that the openings (28) in the bases (15) have passages (14), wherein the passages (14) are directed away from the interior of the header (27, 33) toward the flow channels (5, 6) .
  6. The heat exchanger (10) according to one of the preceding claims, characterised in that the bases (15) on the longitudinal sides have at least partially upstanding edge regions (22), which laterally close the longitudinal channels (17, 18) and/or the cross channels (34) and/or the pockets (21) .
  7. The heat exchanger (10) according to claim 6, characterised in that the upstanding edge regions (22) have a bottom edge region (29), which is formed by a continuous material strip, wherein a plurality of crenellated sealing elements (20) upwardly join to the bottom edge region (29).
  8. The heat exchanger (10) according to claim 6 or 7, characterised in that the at least partially upstanding edge regions (22) have fixing elements (19) by means of which the covers (16, 30) can be fixed to the bases (15).
  9. The heat exchanger (10) according to one of the preceding claims, characterised in that the pockets (21) in the first cover (16) are formed by indentations (26), which are introduced in an edge (25) running laterally parallel to the first longitudinal channel (17) and to the second longitudinal channel (18) and in each case merge into the first longitudinal channel (17) or the second longitudinal channel (18).
  10. The heat exchanger (10) according to one of the preceding claims, characterised in that the cross channels (34) and/or pockets (21) and/or passages (14) have a variable cross-section.
  11. The heat exchanger (10) according to one of the preceding claims, characterised in that the first longitudinal channel (17) and/or the second longitudinal channel (18) have one or more partition walls that divide the particular longitudinal channel (17, 18) into a number of sections.
  12. An arrangement of a heat exchanger (10) according to one of the preceding claims in an air-conditioning system, characterised in that the heat exchanger (10) is a two-row condenser and is arranged within an air-conditioning unit of an air-conditioning system, wherein the first flow channels (5, 6) form the first row and the second flow channels (5, 6) form the second row, wherein a first fluid can flow through the first flow channels (5, 6) and the second flow channels (5, 6) and a second fluid can flow around them.
EP14708822.3A 2013-02-27 2014-02-25 Heat exchanger Active EP2962056B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013203222.6A DE102013203222A1 (en) 2013-02-27 2013-02-27 Heat exchanger
PCT/EP2014/053627 WO2014131756A1 (en) 2013-02-27 2014-02-25 Heat exchanger

Publications (2)

Publication Number Publication Date
EP2962056A1 EP2962056A1 (en) 2016-01-06
EP2962056B1 true EP2962056B1 (en) 2020-08-05

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EP14708822.3A Active EP2962056B1 (en) 2013-02-27 2014-02-25 Heat exchanger

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US (1) US9874405B2 (en)
EP (1) EP2962056B1 (en)
CN (1) CN105026872B (en)
BR (1) BR112015020486A2 (en)
DE (1) DE102013203222A1 (en)
WO (1) WO2014131756A1 (en)

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Also Published As

Publication number Publication date
CN105026872B (en) 2018-05-25
BR112015020486A2 (en) 2017-07-18
US20150354900A1 (en) 2015-12-10
US9874405B2 (en) 2018-01-23
EP2962056A1 (en) 2016-01-06
WO2014131756A1 (en) 2014-09-04
DE102013203222A1 (en) 2014-08-28
CN105026872A (en) 2015-11-04

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