WO2011154175A2

WO2011154175A2 - Heat exchanger, and soldering method for producing a heat exchanger

Info

Publication number: WO2011154175A2
Application number: PCT/EP2011/055568
Authority: WO
Inventors: Holger König; Thomas Odrich; Stanislav Perencevic; Alfred Erhard
Original assignee: A-Heat Allied Heat Exchange Technology Ag
Priority date: 2010-06-11
Filing date: 2011-04-08
Publication date: 2011-12-15
Also published as: WO2011154175A3

Abstract

The invention relates to a heat exchanger (1), comprising a fin arrangement (2) having a first heat-exchange fin (21) and a second heat-exchange fin (22), wherein a first passage (31) is formed at the first heat-exchange fin (21) and a second passage (32) is formed at the second heat-exchange fin (22). The first heat-exchange fin (21) and the second heat-exchange fin (22) are arranged adjacently to each other in the fin arrangement (2) in such a way that a heat-medium duct (4) for conducting a heat medium (5) is formed by means of a connection of the first passage (31) to the second passage (32). According to the invention, the first passage (31) and the second passage (32) are connected to each other in a sealed manner by means of a solder joint (6). The invention further relates to a soldering method for producing a heat exchanger (1).

Description

Heat exchanger, as well as soldering process for the production of a heat exchanger

The invention relates to a heat exchanger and a soldering method for producing a heat exchanger according to the preamble of

independent claims 1 and 1 1.

The use of heat exchange systems is in a barely too

survey of the number of applications known in the art. Heat exchangers are used in refrigerators, e.g. in ordinary

Household refrigerators used in air conditioners for buildings or vehicles of all kinds, especially in automobiles, aircraft and ships, as water or oil coolers in internal combustion engines, as condensers or evaporators in refrigerant circuits, such as in heat pumps and in countless other applications, the the skilled person are all well known.

There are different ways to classify heat exchangers from different applications. One try is to make a distinction according to the construction or the production of the various types of heat exchangers.

Thus, on the one hand, a classification according to so-called "laminated

Heat exchangers ", which may also be referred to as" tube heat exchangers ", and on the other hand to" Minnichannel ",

Microchannel heat exchangers or microchannel heat exchangers

be made.

The laminated tube heat exchangers, well known for a very long time, serve, like all types of heat exchangers, to transfer heat between two media, eg, but not only, to transfer from a cooling medium to air or vice versa, as is known, for example, from a classic household refrigerator in which over the

Heat exchanger for generating a cooling capacity inside the

Refrigerator is given off heat to the ambient air. The ambient medium outside of the heat exchanger, eg water, oil or often simply the ambient air, for example, absorbs the heat or is transferred from the heat to the heat exchanger is either cooled or heated accordingly. The second medium may be, for example, a liquid refrigerant or heat transfer medium or an evaporating or condensing heat medium. In the context of this application, the term "heat medium" is to be understood as meaning any fluid which can advantageously be used in a heat exchanger. The term "heat medium" thus includes both the conventional refrigerants known in the art as well as any other suitable heating means or coolant. In particular, if, in a particular application, the heat exchanger is a simple radiator, for example a radiator in an internal combustion engine, the heating means, in particular, may of course simply be water or oil which circulates as a coolant through the heat exchanger. In any case, the surrounding medium, eg the air, has a significantly lower heat transfer coefficient than the second medium, eg the coolant which circulates in the heat exchanger system. This is due to very different heat transfer surfaces for the two media

balanced: The medium with the high heat transfer coefficient, ie the heat medium, flows in the tube, which on the outside by thin sheets (ribs, fins) has a greatly enlarged surface at which the heat transfer, for. takes place with the air.

Fig. 1 shows a simple example of such a known

laminated heat exchanger 1 '. In the simplest case, such a laminated heat exchanger 1 'by a plurality of heat exchange fins 21' is formed, whereby the heat exchange surface 21 1 'can be massively increased. In the operating state flows through the heat medium lines 4 'a heating means 5', so that the heating means 5 'mainly through the heat exchange fins 21' with the environment, usually with the ambient air L 'heat exchange by the ambient air L' as Transportfluidum U to transport the Heat is for example transported by means of a fan in the direction of the arrow L 'according to FIG. 1 through the heat exchanger 1'.

It should be noted at this point that features of prior art devices in the context of this application are provided with one or two quotation marks, while features of embodiments according to the invention do not carry an apostrophe.

The ratio of the outer surface to the inner surface depends on the lamella geometry (= pipe diameter, pipe arrangement and pipe spacing), as well as on the lamellar spacing d '. The fin spacing d 'is for

different applications chosen differently. Purely

thermodynamically, however, it should be as small as possible, but not so small that the air-side pressure loss is too large. An economic optimum is about 2 mm, which is a typical value for condenser and recooler.

The production of these so-called laminated heat exchanger 1 'is carried out according to a long-known standard process: The

Heat exchange fins 21 'are prepared with a press and a special tool and punched out according to a predetermined scheme and the punch-outs 31' provided for spacing with collar K '.

Then, the heat exchange fins 21 'are put into packets to each other. Subsequently, the pipes 4 'designed as heating means lines 4', which are to transport the heating means 5 'later, are pushed into the collars K' and thus through the cutouts 31 'and either mechanically or hydraulically expanded so that a very good contact and thus a good contact Heat transfer between the heat transfer lines 4 'and

Heat exchange blade 21 'is formed. The individual heat transfer lines 4 'are then interconnected by arches and manifold and manifold, often soldered together. For reasons of clarity, the collection and distribution pipes in Fig. 1 are not shown.

To illustrate the construction of the heat exchanger 41 'according to FIG. 1, a detail of a plan view from the direction R' to the heat exchanger 1 'is shown schematically in FIG. 2. Particularly important are the collar K ', through which the heat transfer lines 4' are guided, as this ensures that the heat exchange fins 21 "a defined distance d 'comply.

The efficiency is essentially determined by the fact that the heat that is transferred between the fin surface and the air, must be transmitted through heat conduction through the fins to the pipe. This heat transfer is more effective, the higher the conductivity or the thickness of the lamella, but also the smaller the distance between the Pipes is. This is called the lamella efficiency. As a lamellar material is therefore nowadays predominantly aluminum used, which has a high thermal conductivity (about 220 W / mK) to economic conditions. The pipe pitch should be as small as possible, but this leads to the problem that you need many pipes. Many pipes mean high costs because the pipes (usually made of copper) are considerably more expensive than the thin aluminum fins. This material cost could be reduced by reducing the pipe diameter and wall thickness, ie building a heat exchanger with many small pipes rather than a few large pipes. Thermodynamically, this solution would be optimal: very many tubes in close proximity with small diameters. However, a significant cost factor is also the working time for expanding and soldering the pipes. This would increase extremely with such a geometry.

Therefore, a few years ago, a new class of heat exchangers, so-called minichannel or microchannel heat exchangers, have been developed, which are manufactured according to a completely different process and almost correspond to the ideal of a laminated heat exchanger: many small tubes with small spacings.

Instead of small tubes, however, the microchannel heat exchanger employs extruded aluminum sections which have very many small channels with a diameter of e.g. about 1 mm.

Such a microchannel heat exchanger 1 ", also known per se, is shown schematically in Fig. 3. The microchannel heat exchanger 1" of Fig. 3 is formed by two extruded profiles 21 "

Extruded profiles 21 "of FIG. 3 are preferably in thermal contact with a corrugated cooling fin 200", so that the heat medium 5 "carried by the microchannels 4" transfers its heat to the heat

Transportfluidum L ", preferably air L", for example, with a non shown fan in the direction of arrows L "through the heat exchanger 1" is promoted, can exchange better.

In practice, a heat exchanger 1 ", depending on the required

Heat output, even with a single extruded profile 21 "as a central heat exchange element manage

Of course, in a single heat exchanger 1 ", it is also possible to provide a plurality of extruded profiles 21" simultaneously connected to each other in suitable combinations, for example by means of connections and discharges, e.g. are soldered to each other, which is not shown for reasons of clarity in Fig. 3.

Such extruded profiles may e.g. be made easily and in a variety of forms from a variety of materials in suitable extrusion. However, other methods of making microchannel heat exchangers are known, such as e.g. the

Assembly of suitably shaped profile sheets or other suitable methods.

These profiles can not, and you do not need to widen and they are not inserted into stamped plate packs.

Instead, for example, between two closely spaced profiles (common distances, for example, <1 cm) explained as in Fig. 3 sheet metal strips, in particular aluminum sheet laid, so that by alternately juxtaposing sheet metal strip and profile

Heat exchanger package is created. This package is then completely soldered in a soldering oven.

Due to the narrow distances and the small channel diameter creates a heat exchanger with a very high fin efficiency and a very low filling volume (channel inside). The other advantages of this technique are the avoidance of material pairings (corrosion), the low weight (no copper), the high pressure stability (about 100 bar) and the compact design (typical depth of a heat exchanger eg 20mm). Microchannel heat exchangers have become established in mobile use during the 90s. The low weight, the low block depth and the limited dimensions required here are the ideal ones

Requirements for this. Car coolers and condensers and evaporators for car air conditioning systems are today almost exclusively with

Minichannelwärmeaustauschern realized.

In the stationary area, on the one hand, larger heat exchangers are usually needed; on the other hand, the emphasis here is less on weight and compactness than on the optimal price-performance ratio.

Minichannelwärmeaustauscher were previously limited in size to be eligible. Many small modules would have to be connected consuming. In addition, the

Aluminum use in the extruded sections is relatively high, so that hardly any cost advantage was expected from the use of materials.

Due to the high volumes in the automotive sector, the

Manufacturing processes for mini-channel heat exchangers standardized and improved, so that one can call this technology today as mature. The size of the soldering furnace has meanwhile also increased, so that heat exchangers in the size of 6 can already be made of about 1 x 2 m. The initial difficulties with the connection system are resolved. There are now several patented methods, such as the stiffening and

Can be soldered manifolds. Above all, however, the price of copper, which has risen sharply compared with aluminum, is now causing this technology to become increasingly interesting for stationary use as well.

Both types of heat exchangers have the practical

Application its advantages and disadvantages. Laminated heat exchangers are especially for stationary applications, so for large

Heat transfer services still widespread. No extruded profiles need to be manufactured or procured expensively and costly by suppliers. The manufacturing processes have long been established and mechanically easy to master and there is a great deal of experience in the dimensioning and specific design of heat exchangers, even for special applications, so that they still have a high acceptance in the market.

The disadvantage is that usually two different materials have to be processed, usually aluminum for the heat exchange fins and the now very expensive copper for the heat transfer lines. In addition, two completely different processes are used in the production of the known laminated heat exchanger: once the

Heat transfer lines, as already explained above, after insertion into the collar at the punched holes in the heat exchange fins with a

Expander tool be widened mechanically, so on the one hand a good thermal contact is made to the heat exchange fins.

On the other hand, so that the secure mechanical stability of the assembled laminated heat exchanger is only made. On the other hand, the individual heat pipes must be soldered together via arches and collection and distribution pipes, which is a

additional process, namely the soldering process, which is also required in the Individual case is very complex in practice and often requires highly qualified specialists to carry out the soldering work.

The microchannel heat exchangers, which ultimately represent an idealized laminated heat exchanger, on the other hand, can only be made of one material, for example aluminum and the various components such as inlet and outlet segments, which are often referred to as headers, the extruded profiles themselves and the cooling fins can first mechanical be put together and then in a single

Soldering be soldered together in a soldering oven. A disadvantage, however, is that the extruded profiles require very special machines for their production, so that the extruded profiles must be purchased externally, which of course makes the production more expensive for a variety of reasons. In addition, there are quite applications where the classic laminated heat exchanger have advantages over the microchannel heat exchangers, especially when very fast, so in a short time large flow through the heat exchanger must be realized. This is often not possible with microchannel heat exchangers with the very narrow microchannels or is associated with an unacceptably high pressure drop across the heat exchanger. The object of the invention is therefore to provide a completely new type of

To propose heat exchanger, which combines the advantages of both types of heat exchangers and conceptually flexible so that in a limit case functionally in principle a new type of laminated heat exchanger is provided and in another limit case functional in principle a new type of microchannel heat exchanger is provided. Here, the new type of heat exchanger is inexpensive and simple and essentially by a single, easy-to-use

Manufacturing process are composed.

The objects of the invention solving these objects are characterized by the features of independent claims 1 and 11.

The dependent claims relate to particularly advantageous

Embodiments of the invention.

The invention thus relates to a heat exchanger comprising a

Disk set with a first heat exchange fin and a second heat exchange fin, wherein at the first heat exchange fin a first passage and at the second heat exchange fin a second

Passage is formed. The first heat exchanger fin and the second heat exchanger fin are arranged adjacent to each other in the disk pack in such a way that by means of a connection of the first feedthrough to the second feedthrough a heat transfer line for the passage of a heating medium is formed. According to the invention, the first passage and the second passage are sealingly connected to one another by means of a solder connection.

The invention provides a completely new type of heat exchanger which combines the advantages of the classic laminated heat exchanger and those of the microchannel heat exchanger. Of the

Heat exchangers of the present invention are inexpensive and easy to manufacture, and can be substantially soldered together in a single operation in a brazing furnace by a single, easy-to-use brazing process.

Be the diameter of the heat pipes and the distances of the first and second heat exchanger blade as in a classic laminated heat exchanger selected, so the invention provides a completely new heat exchanger, which is made for example only of a single material such as aluminum or other suitable material and can be soldered together in a single process step in a brazing furnace, but at the same time the functional properties has a classic laminated heat exchanger. Namely, without the known problems such as different thermal expansion, the formation of local chemical elements, problems with the solderability of various metals, etc., which are known to always occur in the simultaneous processing of various materials such as copper and aluminum.

Be the leads and thus the diameter of the

Heat transfer lines selected as in a microchannel heat exchanger, so for example with a diameter of the order of one millimeter and a sufficiently large number of such heat transfer lines is provided in the heat exchange fins, creating a completely new type of heat exchanger, the functionally all the advantages of a known microchannel Heat exchanger has.

In a preferred embodiment of a heat exchanger according to the invention, a connecting means, for example a connecting ring or a connecting collar, is formed on the first passage and the second passage is simultaneously configured such that the first passage is positively connected to the second passage via the connecting means.

In particular, the connecting means may also be, for example

Conduit to be, which is formed by a stamping or forming process from the heat exchanger blade itself and thus is an integral part of the heat exchanger blade. A passage cross-section of the heat pipe can be simply circular as in a known laminated heat exchanger or it is also possible that a first passage cross-section of the

Heat pipe is larger than a second passage cross-section, so that the heat transfer line, for example, has an oval cross-section or a rectangular cross section, as is the case of the microchannel

Heat exchangers is known per se. In this case, the cross section of a heat pipe of a heat exchanger of the present invention may also have any other cross-sectional shape suitable for a particular application. In an embodiment which is important for practice, as already mentioned, the passage cross-section of the heat-conveying line in the disk set is configured such that the heat exchanger is at least partially functionally designed in the form of a microchannel heat exchanger, wherein preferably the entire heat exchanger is designed in this way. Also, the passage cross section of the heat transfer line in

Disc set be configured such that the heat exchanger is at least partially functional in the form of a laminated heat exchanger.

It is understood that even mixed forms, so in the end hybrid

Heat exchangers are possible in which a part of the heat medium lines is designed with large diameters as in classic laminated heat exchangers and another part is equipped with very small diameter as in microchannel heat exchangers.

It goes without saying that in most embodiments relevant to practice in the disk set a plurality of heat transfer lines are formed. In a manner known per se, an inlet segment, that is to say an inlet header and for discharging the heating medium, may comprise an outlet segment, ie an outlet header, as is known per se from the known laminated and also from the microchannel heat exchangers for supplying the heat medium ,

It is also possible that the heat exchanger for supplying the heating means and at the same time for the removal of the heating means a

Exchange segment includes. So a single header to which the inflow of the heat to the heat exchanger and the outflow of the heat to the heat exchanger is accomplished simultaneously.

The invention further relates to a soldering method for producing a heat exchanger of the present invention, wherein soldering a disk set with a first heat exchange fin and a second

Heat exchanger blade is provided and at the first

Heat exchange blade a first passage and at the second

Heat exchange fin a second passage is formed. The first heat exchanger fin and the second heat exchanger fin are in this case arranged adjacent to one another in the disk pack in such a way that the first feedthrough and the second feedthrough can be connected to one another in the form of a heat pipe for the passage of a heating medium. According to the invention, the first passage and the second passage are sealed together by means of a solder joint.

In a particularly important embodiment for practice, a connecting means is formed on the first passage and the second passage is configured such that the first passage can be first positively connected via the connecting means with the second passage and then soldered in a form-fitting manner. As a rule, an inlet segment is provided for supplying the heat medium to the heat exchanger, and an outlet segment for discharging the heat medium at the heat exchanger in a manner known per se for heat exchangers. Or it may be at an inventive

Heat exchanger for the simultaneous supply discharge of the heating means to be provided an exchange segment, they fulfill the function of supply and discharge of the heating means, of course, via a separate supply and discharge line simultaneously.

Particularly preferably, the passage and / or the passage and / or the connecting means is produced by punching the first heat exchange fin and / or the second heat exchange fin.

That is, in practice, a heat exchanger according to the invention, the at least the disk set and the inlet segment and the

Outlet segment includes, and / or at least the disc pack and the exchange segment comprises, assembled and the

composite heat exchanger is in a brazing furnace in one

Work step soldered together. Preferred materials for the production of heat exchangers according to the invention are in particular materials which are solderable, that is to say preferably copper or aluminum, but by no means exclusively copper or aluminum, but also all other suitable materials or combinations of suitable ones

Materials.

In the following the invention will be explained in more detail with reference to the drawing. In a schematic representation:

Fig. 1 is a known from the prior art laminated

Heat exchanger; FIG. 2 shows the heat exchanger according to FIG. 1 in section; FIG.

Fig. 3 is a known from the prior art microchannel

Heat exchanger;

Fig. 4 shows a first embodiment of an inventive

heat exchanger;

Fig. 5 shows a second embodiment with sections themselves

reducing passage cross-section;

Fig. 6 shows a third embodiment with continuously

reducing passage cross-section; Fig. 7a heat exchanger with exchange segment and deflection segment;

7b is a sectional view of the replacement segment according to FIG. 7a

along the section line AI from the direction A;

7c shows a sectional view of the heat transfer lines according to FIG. 7a along the section line All from the direction of view A; 7d shows a sectional view of the deflection segment according to FIG. 7a along the section line AMI from the direction of view A;

Figs. 1 to 3, the two known from the prior art

Heat exchangers show, were already discussed in detail and therefore need not be considered separately in the following.

As a reminder, it should again be pointed out that the features of exemplary embodiments according to the invention are provided with reference symbols which do not carry an apostrophe, whereas the reference symbols in FIGS Fig. 3, the known heat exchanger show, with one or

High commas are provided.

FIG. 4 schematically shows a first exemplary embodiment of a heat exchanger according to the invention, which is provided with the reference number 1 in its entirety below.

The heat exchanger 1 according to FIG. 4 comprises a plate pack 2 with a first heat exchanger lamination 21 and a second heat exchanger lamella 22, wherein a first passage 31 is provided on the first heat exchanger lamination 21 and a second passage 32 on the second heat exchanger lamella 22

is formed, and the first heat exchange fin 21 and the second

Heat exchange blade 22 are arranged adjacent to each other in the disk set 2 to each other, that by means of a compound of the first passage 31 to the second passage 32, a heat transfer line 4 for the passage of a heating means 5 is formed. According to the present invention, the first passage 31 and the second passage 32 by means of a

Solder joint 6 sealed together.

In the special embodiment of FIG. 4, a connecting means 31 1, 31 10 is formed on the first passage 31 and the second passage 32 is configured such that the first passage 31 via the

Connecting means 31 1, 31 10, which here is a pipe stub 31 10, positively connected to the second passage 32 and soldered to the positive connection.

A passage cross-section 40 of the heat pipe 4 is selected to be circular in the example of FIG. 4, so that the heat exchanger 1 thus formed functionally corresponds more or less to a known laminated heat exchanger. It is understood that in the heat exchanger 1 of FIG. 4, a plurality of

Heat transmission lines 4 are formed in the disk pack 2, wherein for reasons of clarity in Fig. 4 by way of example only one

Heat transfer line 4 is shown schematically. Likewise, for reasons of clarity, FIG. 4 omitted the illustration of an inlet segment 7 for supplying the heating means 5, as well as the illustration of an outlet segment 8 for removing the heat medium from the heat exchanger 1.

The heat exchanger of Fig. 4 was in accordance with a

soldering process according to the invention produced in which soldering process, the disk set 2 was provided with the first heat exchange fin 21 and the second heat exchange fin 22, and at the first

Heat exchange blade 21, the first passage 31 and at the second

Heat exchange blade 22, the second passage 32 including the

Conduit 31 10 was punched out by a punching process. Then, the first heat exchange fin 21 and the second heat exchange fin 22 are arranged adjacent to each other in the disk pack 2 to each other that the first passage 31 and the second passage 32 in the form of a

Heat transfer line 4 are connected to each other for the passage of the heating means 5. According to the present invention, the first passage 31 and the second passage 32, i. in the present example, the entire disk set 2 including the not shown

Inlet segments and outlet segments in a single soldering in a brazing furnace by means of a solder joint 6 sealingly connected to each other, so soldered together.

FIGS. 5 and 6 show two further exemplary embodiments

Heat exchanger 1 according to the invention, wherein the second embodiment according to Figure 5 an embodiment with sections itself decreasing passage cross-section 40, 41, 42 and with reference to FIG. 6, a third embodiment with continuously decreasing

Passage cross-section 40, 41, 42 is shown schematically. For reasons of clarity, only the passages 31, 32 are shown. The remaining components of the heat exchanger 1 are in principle in

Essentially identical to those of the previously described, or to the other components per se known heat exchanger.

The heat exchanger 1 gem. Fig. 5 and Fig. 6 are composed of heat exchange fins 21, 22, in which the cross-sectional shape or the

Passage cross-section 40, 41, 42 of the passages 31, 32 in

Flow direction, or other, not explicitly shown

Embodiments, also against the flow direction of the heating means 5 is adapted so that the heat transfer properties are adapted to the specific properties of the concrete heating means 5 used.

This is realized in that the passage cross-section 40, 41, 42 in the example of FIGS. 5 and 6 are changed in the flow direction of the heating means 5 according to a predeterminable scheme, in which case they are increasingly being increasingly reduced in size. In other embodiments, depending on the requirement, for example depending on the heat means 5 to be used concretely, it may also be the case that the passage cross-section 40, 41, 42 increasingly increases in the flow direction of the heating means 5.

In the example of FIG. 5, the passage cross section 40, 41, 42 decreases in sections. That is, in section A1 are all

Passage cross sections 40, 41, 42 Although equal, but larger than the

Transit sections 40, 41, 42 in section A2. Where the

Passage cross-sections 40, 41, 42 in the section A2 in turn are all the same again, but in turn larger than the passage cross-sections 40, 41, 42 in section A3. In the specific embodiment according to FIG. 6, the size decreases

Passage cross section 40, 41, 42 in the sense of a quasi-continuous, that of a passage 31 to a respective adjacent in the flow direction of the heating means 5 second passage 32 of the

Transit cross-section 40, 41, 42 each reduced.

For example, this means that as a result of these embodiments, there is an increasing change, that is to say, a reduction in size

Passage cross-section 40, 41, 42, the speed of the heating means 5 when flowing through the heat medium channels or the passages 31, 32 can be adapted to the changing density of the heating means 5, for example, that the flow rate can be changed, in particular increased to to improve a heat transfer.

This is especially true for such fluids or heat 5, the at

Go through the heat exchanger 1 certain specific properties change. These include, for example, heat 5 with a

Phase change from at least one state to another solid, liquid, gaseous, transcritical. But also fluids or heat 5, their

Properties due to any chemical

Change reaction or a physical process are included. Finally, an embodiment of an inventive device which is particularly important in practice will be described with reference to FIGS. 7a to 7d

Heat exchanger 1 with exchange segment 9 and deflecting 91, between which the heat transfer lines 4 are arranged, are discussed. For a better understanding of the geometric arrangement of the components of the heat exchanger 1 according to FIG. 7a, with reference to FIG

Sectional view of the exchange segment according to FIG. 7a along the section line AI from the viewing direction A, with reference to FIG. 7c a sectional view 7a along the section line All from the direction of view A and finally with reference to FIG. 7d is a sectional view of the Umlenksegments according to FIG. 7a along the section line AMI

Viewing direction A shown in a schematic manner. The embodiment of a heat exchanger 1 according to the invention according to FIG. 7 a comprises an exchange header 900 with exchange segment 9 and coupling element 901, a deflection header 910 with deflection segment 91 and a deflection coupler 91 1. The heat medium lines 4 are arranged between the coupling element 901 and the deflection coupler 91 1 such that the heating means 5 according to FIG. 7 b via an inlet segment 7 of the replacement segment 9 and the coupling element 901 into a first

Heat medium line 4, 401 can be fed, via the deflection coupler 91 1 the deflecting segment 91 can be fed, and from there again on the

Diverter 91 1 in a second heat source line 4, 402 can be fed, and from the second heat medium line 4, 402 via the coupling element 901 and the outlet segment 8 according to FIG. 7b again from the

Exchange segment is dischargeable.

According to the present invention, the complete

Heat exchangers comprising, for example, the components described above, are put together and then completely soldered in a brazing furnace.

It goes without saying that the exchange header 900 with

Replacement segment 9 and coupling element 901 and / or the Umlenkheader 910 with Umlenksegment 91 and Umlenkkoppler 91 1 can be prefabricated from one piece.

Incidentally, in another embodiment, it may of course also be the case that the heat pipes 4 do not lie between an exchange segment 9 and a Umlenksegment 91 are arranged, but that the

Inlet segment 7 and the outlet segment 8 are arranged in a conventional manner in two different headers, an inlet header and an outlet header, between which the heat transfer lines 4 are provided.

It is understood that the embodiments described in the context of this application are to be understood as exemplary only. That is, the invention is not limited to the specific ones described

Embodiments limited. In particular, all are suitable

Combinations of the presented specific embodiments also covered by the invention.

Claims

claims

1 . Heat exchanger comprising a plate pack (2) with a first

Heat exchange blade (21) and a second heat exchange plate (22), wherein at the first heat exchange plate (21) a first passage (31) and at the second heat exchange plate (22) has a second

Through passage (32) is formed, and the first heat exchange fin (21) and the second heat exchange fin (22) so adjacent in

Lamella packet (2) are arranged to each other, that by means of a

Connection of the first passage (31) with the second passage (32) is a heat transfer line (4) for passing a heating means (5) is formed, characterized in that the first passage (31) and the second passage (32) by means of a solder connection ( 6) are sealed together.

2. Heat exchanger according to claim 1, wherein at the first passage (31), a connecting means (31 1, 31 10, 31 1 1) is designed such and the second passage (32) is configured such that the first

Passage (31) via the connecting means (31 1, 31 10, 31 1 1) with the second passage (32) is positively connected.

3. Heat exchanger according to claim 2, wherein the connecting means (31 1) is a pipe socket (31 10).

4. Heat exchanger according to one of the preceding claims, wherein a passage cross-section (40, 41, 42) of the heat medium line (4) is circular.

5. Heat exchanger according to one of the preceding claims, wherein a first passage cross section (41) of the heat medium line (4) is greater than a second passage cross-section (42).

6. Heat exchanger according to one of the preceding claims, wherein the passage cross-section (40, 41, 42) of the heat-emitting line (4) in the disk set (2) is designed such that the heat exchanger is at least partially in the form of a micro-channel heat exchanger.

7. Heat exchanger according to one of the preceding claims, wherein the passage cross-section (40, 41, 42) of the heat-emitting line (4) in the disk set (2) is designed such that the heat exchanger at least partially in the form of a laminated heat exchanger

is trained.

8. Heat exchanger according to one of the preceding claims, wherein in

Plate pack (2) a plurality of heat pipes (4)

are formed.

9. Heat exchanger according to one of the preceding claims, wherein for supplying the heating means (5) of the heat exchanger, an inlet segment

(7) and for discharging the heating means (5) of the heat exchanger comprises an outlet segment (8).

10. Heat exchanger according to one of the preceding claims, wherein the heat exchanger for supplying the heating means (5) and for discharging the heating means (5) comprises an exchange segment (9) and a deflection segment (91).

1 1. Soldering method for producing a heat exchanger (1) according to one of the preceding claims, wherein the soldering method comprises a disk pack (2) having a first heat exchange fin (21) and a second heat exchanger fin (21)

Heat exchange blade (22) is provided, and at the first

Heat exchange blade (21) is formed a first passage (31) and at the second heat exchange fin (22) a second passage (32), and the first heat exchange fin (21) and the second

Heat exchange blade (22) adjacent to each other in the disk pack (2) are arranged to each other that the first passage (31) and the second passage (32) in the form of a heat transfer line (4)

Passage of a heating means (5) are interconnected, characterized in that the first passage (31) and the second passage (32) by means of a solder joint (6) are sealingly connected together.

Soldering method according to claim 1 1, wherein at the first passage (31) a connecting means (31 1, 31 10, 31 1 1) formed in such a way and the second passage (32) is configured such that the first passage (31) via the connecting means (31 1, 31 10, 31 1 1) with the second passage (32) can first be positively connected and then soldered in a form-fitting manner. 13. soldering method according to claim 1 1 or 12, wherein for supplying the

Heat means (5) on the heat exchanger (1) an inlet segment (7) and for discharging the heating means (5) on the heat exchanger (1) a

Outlet segment (8) is provided, or wherein on the heat exchanger (1) for supplying the heating means (5) and for discharging the heating means (5) an exchange segment (9) is provided.

14. soldering method according to any one of claims 1 1 to 13, wherein the passage (31) and / or the passage (32) and / or the connecting means (31 1, 31 10, 31 1 1) by punching the first heat exchange blade (21) and / or the second heat exchange fin (22) is produced. 15. Soldering method according to one of claims 1 1 to 14, wherein the

Heat exchanger (1) at least comprising the plate pack (2) and the inlet segment (7) and the outlet segment (8), and / or comprising the disc pack (2) and the exchange segment (9) is assembled and the composite heat exchanger (1) is soldered together in a brazing furnace.