DE102004027402A1 - heat exchangers - Google Patents

Abstract

The The invention relates to a heat exchanger with a first collector (10), in which at least by means of a longitudinal partition wall separate chambers (44, 46) are formed, and with a tube-ribbed or pipe block (14), the pipes in the first collector (10) (16) or having pipe facilities, on the longitudinal partition wall (42) are fixed, with the longitudinal partition wall (42) has slots (50), wherein tubes (16) or tube means of the block (14) have slots (54) or shoulders respectively are positioned in the region of a respective slot (36) of the longitudinal dividing wall (42), and a method of manufacturing a heat exchanger.

Description

The The invention relates to a heat exchanger, and although in particular a heat exchanger for one Heating or air conditioning of a motor vehicle.

It is already - at least the applicant - a heat exchangers for motor vehicles known, one provided with a separately manufactured floor first collector has. In this known heat exchanger, the first collector by means of a longitudinal partition wall divided into chambers. The longitudinal partition protrudes inside the first collector to its bottom. This known heat exchanger has a tube and fin block with a plurality of integrally formed Flat tubes on, in the area of their first end in openings the collector floor are inserted. These flat tubes have it two in each case - also in turn flat tube-like designed - partial flat tubes, by means of a respective, positioned between the partial flat tubes Connecting web are connected. The partial flat tubes close thereby flush at its first end from. The respective connecting web of a flat tube closes at this first end also flush with the partial flat tubes, in such a way that at the first end the conclusion of the two partial flat tubes of the same flat tube as well as the completion of this part of the connecting tubes connecting web each completely lie in a plane perpendicular to the flat tube longitudinal plane. For each this connecting webs, the longitudinal partition has a slot on the side facing the tube-rib block on. In these slots are the connecting webs inserted, so that the partial flat tubes of the same flat tube in different chambers of the first collector lead. In the area of the slots or in this plugged webs are the bars with the longitudinal dividing wall so soldered, that in this area the two chambers of the first collector against each other are sealed. The flat tubes open with their second, the first ends opposite, Ends in a second collector, being in this second collector a flow connection between the partial flat tubes of the same flat tubes is formed. The fluid can then via a The first collector 's chamber flows into the first partial flat tubes, in the second collectors are deflected, and over the second partial flat tubes flow into the second chamber of the first collector. It has been shown that the manufacturing requirements in the production of such or similar heat exchanger are quite high.

Of the Invention has for its object to provide a heat exchanger, the is reliable and can be easily manufactured.

In particular, according to the invention a heat exchanger according to claim 1 or according to claim 3 proposed. Furthermore, according to the invention, in particular a method for producing a heat exchanger according to claim 18 proposed. Preferred embodiments are the subject of the subclaims.

In particular, according to the invention a heat exchanger with a first collector and a tube-rib block or tube block intended. By means of a arranged in the first collector longitudinal partition separate chambers are formed in the first collector. The tube-rib block or Pipe block - in the following is briefly spoken by block - points several pipes or tubes on the first collector lead. These pipes or tube devices are fixed to the longitudinal partition wall. Preferably are they soldered there? The longitudinal partition has slots, in particular slots, which on the the tube block facing side are arranged and an open Side have. The pipes or pipes in the first Collectors lead are preferably in a tube bottom or in (passage) openings inserted a tube bottom. Such a tube sheet is special preferably manufactured separately from the remaining collector and at this for example soldered. In particular, according to the invention provided that the pipes or pipe fittings of the block slots or paragraphs each having in the region of a respective slot of the Longitudinal partition are positioned. This may in particular be such that an overlap or overlapping, preferably complete overlap or overlapping, given is. This overlap or overlap is in a particularly preferred design in the direction of the longitudinal axes the pipes or tube devices given, and in particular transversely For this. It is particularly preferred that the slot depth - in particular in the direction of the longitudinal axis seen the tubes - both mutually associated slots, so in each case one slot of the Pipe or the pipe device and a slot of the longitudinal partition wall - is greater than the height of a chamber in this direction, passing through the interaction of such slots or in each case a slot a pipe or pipe device and a slot of the partition formed becomes.

In preferred design is provided that several or all tubes several to their longitudinal axis spaced channels or have partial pipes or chambers. It is particularly preferred that such different channels or sub-pipes or chambers in different means of the longitudinal partition wall separate chambers of the first collector open.

The Tubes of the tube and fin block, also referred to as connecting tubes can be preferably in one piece designed.

The invention is further in particular a heat exchanger provided, the first collector and a tube-rib block or tube block. In this case, the first collector has a - in particular separately made - ground up. In this first collector is also at least one longitudinal partition wall intended to form separate chambers in the interior of the collector. Furthermore, it is provided in this design that the block designed in one piece Having tubes, for example, each aligned parallel to each other are. These tubes each have at least two perpendicular to the respective tube longitudinal axis spaced apart chambers or channels or sub-pipes. These channels or chambers or sub-pipes, for example be spaced so that the distance through the wall thickness of the channels or partial pipes is formed. It can also be provided that in contrast a additional Distance is given, for example, by means of a web or can be achieved. In this design is further in particular provided that the tubes with their first ends in the bottom of the first collector are inserted in such a way that respectively two different channels or sub-pipes or chambers of the same pipe in different through the longitudinal partition lead to the collector separate chambers of the collector. It is further in this design In particular, provided that the longitudinal partition wall on the ground facing side is provided in the region of the tubes with slots. Furthermore, it is provided in particular that the pipes between opening up in different chambers channels or sub-pipes or chambers of the tubes in the region of their first ends are each provided with at least one slot or paragraph.

Especially it is preferably provided that the partition wall and the tubes of the block arranged so arranged, the slots of the partition each in the Area of a slot of a tube of the block are arranged. It is especially provided that the slots of the partition and overlap and overlap the slots of the tubes respectively, and although in particular in the direction of the tube longitudinal axes and / or transversely thereto seen.

The Invention provides a basic basis for a variety of beneficial Embodiments, as specifically explained with reference to the following preferred embodiments and Further education will become clear.

at a particularly preferred embodiment The invention provides that the tubes each have two channels or Partial tubes have, between which a web is arranged in each of which a slot of the tube is provided, which in the tubes provided slots each with a slot of the partition form a cavity, further wherein the width of the slots in the Partition substantially corresponds to the width of the webs of the tubes, and the width of the slots in the tubes substantially the wall thickness of Divider corresponds, and wherein it is further provided that the partition and the tubes each so far in the direction of the other Partly positioned are that the cavity in the area of each open sides of the slots by means of the other slot or the the open side of the other slot substantially opposite wall is closed.

In preferred design, the tubes are each designed in one piece. It is further preferred that pipes between their pipe channels or Partial pipes have a web in which the slot or heel in Area of the first pipe end is provided. It can also be provided be that the slots of the tubes at least partially laterally from wall sections be limited to the channels provided in the pipes or limit the partial pipes.

In preferred design is by the direction of the slot widths the slots of the partition certain direction substantially perpendicular to Direction through the slit widths of the slots of the tubes of the Blocks is determined. It is particularly preferred that the Slot width of the slots provided in the partition respectively essentially the material thickness of this slot respectively assigned Pipe in the region of the tube slot of the pipe bounding area of the pipe corresponds. In particular, it can be provided that the slit width of the slits provided in the partition essentially corresponds to the wall thickness of the respective web, the between channels or partial pipes of a respective pipe is provided. Prefers is further that the slit width of those provided in the tubes Slots each substantially corresponds to the wall thickness of the partition, which is given in the region of the slots of the partition. The wall thickness the partition can also be constant throughout.

Preferably, the tubes are soldered to the partition. Corresponding solder joints are provided in a particularly preferred configuration along the slots provided in the tubes and along the slots provided in the partition or along the corresponding boundaries of these slots. It can be provided that completely solder joints are provided along said boundaries of the slots. Especially However, it is preferred that these solder joints are at least provided so that in the region of the slots, which are separated by means of the partition wall chambers of the first collector against each other.

Especially Preferably, the coverage of the both slot areas to the respective slot area of the flat tube end slot and the partition slot such that they are at least the length of Partition wall slot corresponds. Preference is given by means of a respective Slot of the longitudinal partition wall and a respective slot of the tubes each formed a cavity. It can be provided that this cavity is such that the cavity after the soldering Completely is sealed. But it can also be provided that such a cavity only partially after soldering is sealed, in such a way that in the area of the relevant slots the separated by the partition chambers of the first collector against each other are sealed.

In a preferred design is provided that the respectively open End of the slots provided in the tubes from the point of view of the pipe in question positioned further in the direction of the dividing wall than that of the open one End of the slot of the partition opposite end of this partition wall slot in the same direction. It is also preferred - in particular in combination with the aforementioned design - that the respective open end of the Trennschlitzschlitzes from the perspective of the partition wall in the direction of the is positioned that the open end of the Slot of this tube opposite End of this pipe slot. So it can be especially that way a kind of cavity are formed, the most preferably substantially is closed, its height - in each case Slit depth direction seen - less is, as the slot depth of a slot forming this cavity one pipe and less than the depth of the other, this one Cavity forming slot of partition. Especially with a Such a design is particularly preferably provided that the Slot widths of the partition slots and the slot widths of Tube slots are coordinated so that a process reliable and liquid density Connection between the flat tube and the partition in this area arises. It is particularly preferred that the soldering gaps surrounding this chamber be formed around, less than 0.4 mm, preferably less than 0.3 mm, more preferably less than 0.2 mm.

In preferred design, the tubes are designed as flat tubes, in particular as double or multiple flat tubes. It is thus in particular provided that the tubes designed as flat tubes are and multiple channels have, which are transverse to the longitudinal axis These tubes are arranged adjacent or spaced. Especially preferred are such channels a respective tube aligned parallel to each other. These channels are preferably formed in partial flat tubes, for example are also formed flat-tube-like.

In Particularly preferred design are by means of such channels Partial tubes of the tubes formed several rows of tubes. For example, can be provided that the tubes each two or three or even more channels and, respectively, two, three, and more, respectively formed as three rows of tubes from these channels or sub-tubes become. It is further preferred that between adjacent pipes interspaces for one airflow be formed. It is preferably provided that the pipe system of flows through exactly one medium is, and a heat transfer between this medium and through pipe interspaces flowing air takes place. In a particularly preferred design is provided that the pipes with their second ends, which are opposite to the first ends of these tubes are, lead into a second collector. It may be provided, for example, that in such a second Collector exactly one chamber is formed, so that the medium of a first chamber of the first collector through a first row of tubes forming channels the tubes flows into the second collector, is deflected there, and over one of second channels the tubes formed second tube row flows back into the first collector, and though in the second chamber of the first collector.

However, according to the invention Other interconnections possible or other interconnections are preferred. So, for example be provided that in the first collector more than two chambers be formed. For example, this may be more than provided two longitudinal partitions are and also in the second collector one or more offset-arranged longitudinal partitions provided are so that the medium is serpentine through the heat exchanger to be led. But they are also more complicated according to the invention Interconnections preferred. This can, for example, also cross arranged to the longitudinal partitions partitions be provided.

in the In connection with designs with several longitudinal partitions, it should be noted that these other longitudinal partitions as well slotted according to the invention can be trained and with correspondingly slotted tubes in the sense of the invention can work together, so as exemplified in terms of a slotted longitudinal partition and corresponding slotted tubes will be explained.

Of the Bottom of the first collector is preferably separate from the remaining one Part of this collector, for example, be designed like a hood can, manufactured.

Of the remaining part of the collector, for example, designed like a hood is, can be made in one piece be composed of several parts. It is special provided that this remaining part of the collector, also called the top part referred, and the bottom of the collector a substantially dense Limit space in which, however, if necessary, one or more feed openings for incoming medium and one or more discharge openings for outflowing medium are provided and in the - of course - the pipes of the block.

For example can be provided that the upper part - such as hood - of the first Collector with the bottom of this first collector is soldered tight. Of the Bottom of the first collector, for example, a bent flange exhibit. This flange can, for example, in the tube-rib block or Be turned away from the pipe block side or in this Extend direction. It can be provided in particular that in the area of this flange the floor with the remaining part of the collector or the collector shell is soldered. Soldering in the area The slots and / or other locations may be solder clad in particular or in a soldering oven respectively.

According to one inventive method for producing a heat exchanger, such as a heat exchanger according to the invention is, in particular provided that the tubes of the block are inserted into openings, which are provided in the bottom of the collector, or vice versa. there is the bottom of the collector of the remaining part of the collector or the collector shell separated. In a preferred embodiment provided that the pipes after insertion in the area or near their first ends are widened. This expansion can in particular take place at the points where the pipes penetrate the collector bottom and / or on the collector interior facing side. It can be provided be that pipes afterwards soldered to the collector's bottom become. This can also be done later.

In one of the aforementioned step or steps, the first step, separate second step is provided in particular that the dividing wall is inserted into the first collector. For this purpose can For example, be provided that mechanical holding devices, like projections or the like, are provided in the first collector. It can also be provided that the partition in other ways there is held. It can also be provided that the partition is soldered to the first collector immediately in this step. But even this soldering can for a later Timing. In particular, this insertion is intended that the collector's bottom from the collector or from the remaining collector or the collector shell is separated.

Of the aforementioned first step and the aforementioned second step can essentially in any order or time parallel or overlapping carried out become.

In a third step is provided in particular that the assembly with the pipes and the collector bottom, on the one hand, and the assembly with the remaining collector or the collector top and the partition, on the other hand, be composed. This assembly takes place in particular so that the slots of the tubes each in the area an associated slot of the partition are positioned, and Although preferably to form a cavity. The design or the arrangement of the slots or the relative position of these slots This can be the same as it is elsewhere Revelation is described.

It can be provided that after joining or mating the first assembly and the second assembly that the first collector remote pipe ends, the second ends of the tubes, in a second Collectors are plugged in, for example, a collector's bottom may have, as well as a collector shell. Again, can be provided be that the tubes widened after plugging in the collector bottom become. But it can also be provided that such a connection with a second collector takes place before the first and the second Assembled assembly become.

In Preferred design of the or the collector floors in the remaining Part of the collector, so in particular collector shell, and the partition, or - if so several are present - the partitions with the collector, as well as the pipes with the collector bottom or the collector floors and soldered the pipes to the partition. The soldering the tubes and with the partition takes place in particular in the area the respective slots of pipes and partition.

It it can be provided that this soldering takes place conclusively, So after putting together all Single parts or assemblies, The soldering can in particular by means of Lotplattieren or in a soldering oven respectively.

One Slot is preferably a - like always shaped - material return, the particularly preferably continuous through a material or a Wall section, such as bridge or partition, pulls.

The Invention lays the foundation for a variety of advantageous designs. So, for example at the beginning as - the Applicant - previously known Design described heat exchanger, to which no pamphlet indication is given, the problem occurs that then, if initially, on the one hand, the tubes are inserted into the collector bottom and, on the other hand, the dividing wall into the remaining part of the collector, and these then both modules to be put together no tightness between the chambers formed in the collector is. For example, if the pipes are at least partially so too far into the collector bottom were inserted or the pipes not completely irrelevant length tolerances show, that the collector bottom is not sufficiently far to the remaining part of the collector. This can be, for example be due to that by too far insertion or length tolerances on the pipes strike the partition in its slots, leaving the collector bottom not sufficiently close to the remaining one in this stop position Part of the collector is positioned. On the other hand, it can be here happen that if the pipes are not sufficiently far in the Collectors are pushed in or corresponding length tolerances have an effect, the tubes - at least partially - not protrude sufficiently far into the slots of the partition, so that unwanted or too large openings be formed between the chambers, not readily during soldering, or only with considerable effort, can be closed. such Problems can lead to committee in the previously known designs. To avoid such Problems is a considerable manufacturing effort in the prior art designs required.

The Invention now lays the foundation for that such problems are avoided. This does not have to mean that in each embodiment of the invention These problems are avoided or largely avoided. Show it however, in particular also preferred embodiments that the invention, for example a basis for avoiding or reducing such problems forms.

in the The following will be an embodiment of Invention explained with reference to FIG. whereby the invention should not be limited. It shows:

1 an exemplary heat exchanger according to the invention in a schematic, partial view;

2 the design according to 1 from a tilted angle in partial exploded view, wherein the first collector or a part of the first collector is not shown;

3 an enlarged section of the illustration according to 1 the longitudinal dividing wall being removed for better visibility of the slots in the tubes; and

4 an enlarged section of the design according to 1 from a tilted angle.

The heat exchanger 1 has a first collector 10 in, in its interior 12 the view in 1 is released, and a pipe or tube-rib block 14 ,

This block 14 has a variety of flat tubes 16 on. These flat tubes 16 are designed so that each of these flat tubes 16 strictly speaking, two flat tubes 18 or partial flat tubes 18 or in each of these flat tubes 16 two channels 20 are formed, which are perpendicular to the flat tube longitudinal axis 22 spaced apart. It is envisaged that the flat tubes 16 each designed in one piece, so that the two partial flat tubes 18 or the channels 20 having sections of the flat tubes 16 are integrally connected. In the design according to 1 is provided that the partial flat tubes 18 of the same flat tube 16 are arranged substantially so that through the partial flat tubes 18 the same flat tube 16 spanned levels are substantially parallel or congruent.

Between the respective partial flat tubes 18 a respective flat tube 16 is each a jetty 24 arranged, for example, along the flat tube longitudinal axis 22 can extend over the respective entire tube length and the partial flat tubes 18 a respective flat tube 16 in one piece with each other. It can also be provided that such a bridge 24 does not extend along the entire flat tube length.

The wall thickness of the web 24 is in the design according to 1 less than the dimension of the sub-pipes 18 in the appropriate direction. This is especially so that the bridge 24 a kind of rejuvenation between the adjoining or adjacent sub-pipes 18 forms.

The heat exchanger 1 is designed in two rows. This is especially so that the first part pipes 18 the flat tubes 16 a first row of pipes 26 form and the second part pipes 18 this flat tubes 16 a second row of pipes 28 form. The flat tubes 16 are arranged substantially parallel to each other, in particular so that the of the flat tubes 16 spanned planes are arranged parallel to each other.

In the design according to 1 is provided that between adjacent flat tubes 16 each intermediate spaces 30 are formed for an air flow, in which ribs, not shown, are arranged. Such ribs may, for example, each on both sides of the adjacent flat tubes 16 be soldered. It can also be provided that the or part of these ribs only on each adjacent flat tube 16 is soldered. It can be provided that between adjacent flat tubes 16 for the different pipe rows 26 . 28 separate ribs are provided. Furthermore, it can be provided that between adjacent flat tubes 16 Ridges are arranged, which extend in both rows of tubes, and thus in each case a common rib for both rows of tubes 26 . 28 represent.

It can also be provided that in these spaces 30 no ribs are provided. Furthermore, the flat tubes 16 also be arranged substantially free of space.

On the block 14 facing side points the first collector 10 a floor 32 on. It is especially provided that the ground 32 made separately and with the remaining part of the first collector 10 , in particular shell 48 of the first collector 10 , connected, in particular soldered, is. The floor 32 points, for example - as in 1 shown - one in the direction of the block 14 facing away from the bent flange 34 on. The floor 32 for example, with the remaining part of the first collector 10 , in particular shell 48 , in the area of the flange 34 be soldered.

The floor 32 is with one or more openings for receiving the first ends 36 the flat tubes 16 Mistake. In the design according to 1 is it that in the ground 32 a variety of each slot-shaped openings 38 are provided, each for receiving a flat tube 16 are determined, wherein between adjacent slot-shaped openings 38 each one - in the 2 to 4 good to be recognized - gutter 40 is provided.

Alternatively, however, can also - what in 1 not shown - one or more larger openings for receiving a plurality of flat tubes 16 be provided. The tightness in the floor area can be achieved, for example, by the fact that - if no gaps 30 are provided between the tubes - the tubes in the area or near the first end 36 soldered directly to each other. If, however, such spaces 30 - Which is preferably the case - are provided, for example, corresponding intermediate webs or the like between the tubes 16 in the tube-rib block 14 provided, which cause the appropriate tightness, and for example with the pipes 16 are soldered.

At her first end 36 opposite second end, which in 1 not shown, the flat tubes can 16 also in a collector, a second collector, open or be plugged.

The first collector 10 has a longitudinal partition 42 on that the interior 12 of the first collector 10 in chambers (here in two chambers) 44 . 46 divided.

In the design according to 1 is to limit the interior 12 the first collector 10 next to the ground 32 also an upper part 48 provided, for example - as in 1 shown - can be designed hood-like.

The longitudinal partition 42 extends from one to the ground 32 opposite wall portion of the upper part 48 to the ground 32 ,

In the design according to 1 It is exemplary that the longitudinal partition 42 essentially in the direction of the longitudinal axes 22 the pipes 16 extends, and this substantially transverse or perpendicular to those of these tubes 16 spanned levels.

The partition 42 is preferably on the upper part or the hood 48 attached. It can be soldered there, for example. It can also be provided that - in particular as an assembly aid - projections or the like are provided on the inside of the upper part, between which the partition wall 42 is pushed. Preferably, even if such protrusions or the like are provided, the partition wall 42 on the upper part or the hood 48 soldered.

The partition 42 points to her the block 14 facing side slits 50 on. The partition 42 So it's a slotted partition.

These slots 50 are good at 2 to recognize. The width of these slots 50 that in by the double arrow 52 is given schematically indicated direction, or in a direction perpendicular to the longitudinal axis 22 the flat tubes 16 is given perpendicular to the planes formed by the flat tubes, or gege in the direction of the rows of tubes is ben, preferably corresponds substantially to the wall thickness of the webs 24 on the pipes 16 are provided. It can also be provided that the width of the slots 50 - Especially slightly - is greater than this wall thickness, such as about 0.4 mm larger or up to about 0.4 mm larger. Other dimensions may be provided; However, the dimension of 0.4 mm to 0.4 mm is provided in a particularly preferred embodiment, which will be discussed below.

The slots 50 preferably have - as shown in the figures - a rectangular shape. However, other shapes may be provided. The slots 50 are to the block 14 facing side open.

It is therefore provided in the embodiment that the slots 50 - apart from your open side and in a plane of the partition 42 considered - around of material of the partition 42 be limited. Laterally to this partition wall, the slots are open; the slots are thus formed continuously.

Also the flat tubes 16 are slotted or have slots 54 on. These slots 54 are in the area of the first end of the flat tubes 16 intended. The slots 54 are the first collector 10 open.

The slots 54 are in the embodiment in the webs 24 provided, for example, well in 3 can be seen.

It is therefore provided in the embodiment that the slots 54 - apart from your open side and considered in a Stegelee - all around material of the webs 24 be limited. The slits are open at the side of this floor level; the slots are thus formed continuously. The slots 54 have a substantially rectangular shape in the embodiment.

But it can also be provided that the slots 54 are located elsewhere or otherwise shaped or bounded by other parts.

For example, it can be provided that the slots 54 the pipes 16 not each side of a bridge 24 be limited, but of walls of Teilflachrohre 18 ,

For this purpose, for example, be provided that the webs 24 not so far in the direction of the first collector 10 extend as shown in the figures. In this case, it may then be provided, for example, that the slots are delimited on the side opposite the open side by a respective web, and laterally by a partial flat tube, which is not shown in the figures.

In the embodiment, it is provided that the webs 24 outside the slot area with the partial flat tubes 18 at the first end 36 finish flush. But it can also be provided - even if the webs are provided with a slot - that the webs in the region of the first end 36 protrude or set back, which is not shown in the figures. Furthermore, it can be provided that the partial flat tubes 18 not flush with each other at the first end.

The width of the slots 54 which are essentially in the direction of the double arrow 56 , or perpendicular to the direction of extension of the rows of tubes 26 . 28 and perpendicular to the longitudinal axis 22 the flat tubes 16 is given, preferably corresponds substantially to the wall thickness of the longitudinal partition wall 42 or the wall thickness of this longitudinal partition wall 42 in the area of its slots 50 , It can also be provided that the width of the slots 54 - Especially slightly - is greater than this wall thickness, such as about 0.4 mm larger or up to about 0.4 mm larger. Other dimensions may be provided; However, the dimension of 0.4 mm to 0.4 mm is provided in a particularly preferred embodiment, in particular in combination with an above-mentioned corresponding measure or the slots 50 , In this way, it is achieved that on at least one respective side of the soldering gap between the respective tube 16 and the longitudinal partition is less than or equal to 0.2 mm. Soldering gaps larger than 0.2 mm are often critical. It should be noted, however, that of course other - in particular larger - dimensions may be given, so that the invention should not be limited to the measures mentioned.

The slots 54 are each provided in the middle pipe end region or between different or the two channels 20 in a respective flat tube 18 be formed. It is specifically provided that these slots 54 between each two partial flat tubes 18 of the same flat tube 16 are provided.

As in particular from the synopsis of 1 . 2 and 4 it can be seen, are the slots 50 the longitudinal partition 42 each in the range of an associated slot 54 arranged a flat tube. This is in particular so that an overlap of the slots or slot areas of the partition and the flat tubes is given. It can be provided that the first collector 10 facing (open) end of each slot 54 a respective tube 16 continue in the first collector 10 facing direction is located as the lying in this direction end of each associated slot 50 the longitudinal partition 42 , In particular, it is provided that the width directions of a slot 50 the partition 42 and a slot 54 a pipe 16 each intersect, in particular at a 90 ° angle.

It is further preferably provided that the block 14 facing (open) end of the slot 50 each further in the direction of the block 14 is positioned as the block 14 facing end of the slot 54 of the respective tube 16 , In particular, in cooperation with the above-mentioned slot areas, a cavity of respective slot pairs can thereby 50 . 54 be formed. It is especially provided that the pipes 16 with the partition 42 are soldered in the region of the slots or the boundaries of these slots. In particular, the pipes 16 with the partition 42 soldered such that the chamber separated by the partition in the region of the slots are substantially tight.

It is in particular - as shown in the embodiment - provided that the flat tubes so far through the ground 32 of the first collector are plugged that the first collector 10 opposite end of the slots 54 the flat tubes 16 on the tube fin block 14 opposite side of the floor 32 is positioned. Particularly preferred are the tubes 16 pushed so far that between this, the first collector 10 opposite ^, end of the slots 54 and the floor 32 there is a gap.

Even if only explained with reference to this embodiment, that the first collector 10 Having two chambers, this can by means of the longitudinal partition wall 42 and transverse partitions and / or divided by means of further longitudinal partitions in more than two chambers. It can also be provided that more than two rows of tubes are given in the tube fin block. In particular, it can also be provided that a plurality of such longitudinal partitions are each slotted and the flat tubes each have a plurality of slots, in particular slots of the type mentioned.

The second, the first ends facing away from the flat tubes 16 For example, they may also extend into a collector. This may, for example, be a collector that is not subdivided by means of longitudinal partitions.

The combination of a first collector of the type mentioned above with a second collector, which is not divided into chambers by means of longitudinal dividing walls, can for example be such that a first collector 26 the chambers of the first collector 10 Fluid through the pipes 16 a first row of pipes 26 flows into the second collector, is deflected there, and through a second row of tubes 28 the pipes 16 back to the first collector 10 flows into its second chamber 46 ,

It can be provided in particular that in the first collector 10 an inflow opening and a drain opening is provided for the medium flowing through the pipe system. For example, the inflow opening into a first 44 through the longitudinal partition 42 separate chambers 44 . 46 lead and the drain opening in the second 46 of these chambers 44 . 46 ,

In the following, some preferred steps will be explained, which in the manufacture of the exemplary illustrated heat exchanger 1 can be given. It can be provided, for example, that the flat tubes 16 through the openings 38 of the collector. These flat tubes 16 can then be expanded, for example, then a reasonably secure grip or a clamping in the openings of the soil 32 to effect and / or the dimensions of soldering gaps between the flat tubes 16 and the floor 32 to reduce. Optionally, the flat tubes 16 then with the ground 32 be soldered.

Regardless of this aforementioned step can be provided that the partition 42 in the first collector 10 or the upper part 48 introduced or inserted the first collector. For example, it may be provided that mechanical projections or the like ensure a certain hold. It may further be provided that already at this time a soldering between the partition 42 and top 48 he follows.

In the above manner, so two modules can be generated. It can be provided, for example, that subsequently the assembly with the ground 32 of the first collector 10 and the flat tubes 16 , on the one hand, and the assembly with the remaining part of the first collector 10 or the upper part 48 in which the dividing wall 42 is arranged, on the other hand, joined together or put together or put together. This is done in particular so that the slots 54 in the flat tubes 16 in the area of the slots 50 the longitudinal partition 42 are arranged, in particular overlapping or with coverage, particularly preferably in the longitudinal direction of the flat tubes 16 and is given transversely to this. In particular, this mating can be done so that an overlap of the slots is generated. It may be provided in particular, and this and / or the aforementioned is in particular also a preferred constructive feature of the previously explained design that the flat tubes 16 and the longitudinal partition 42 be moved so far toward each other that some sort of cavity from the slots 50 . 54 is formed in each case, the extension direction in the longitudinal direction of the flat tubes 16 is less than the dimension of the extension of the slots 50 as well as the slots 54 in this direction.

In Advantageously, then the unit of the two Assemblies - and optionally other components, such as attached second collector or the like - soldered. This For example, in a soldering oven done or by solder plating. This allows in particular that as well soldered in places can not by their position by means of a soldering tool or the like (more) or more difficult to reach. Also the - especially additional - use other soldering methods or other joining methods such as welding prefers.

in the The following will now be explained benefits, in particular in the embodiment given are. In this context are also some exemplary Features explained.

at heat exchangers with longitudinal dividing wall, the Such are, as it was initially without reference to documents as the Applicant Known prior art explained has, must the joining process, and with it the insertion depth of the split in the two chambers flat tubes through the soil or collector passage be done very accurately, so that between the flat tube ends and the slotted partitions no gap is created or the gap is only so large that this example in the following soldering process process-reliable and gap-free soldered tightly. Furthermore are the length accuracies the flat tubes due to the aforementioned problem very high Requirements made.

By the slotting or notching of the divided into two chambers flat tubes In the middle pipe end region, an overlap of the two slot areas takes place of flat tube slot and partition slot. Is the overlap both slot areas at least the length of the partition wall slot - which is preferred the case is -, so serves the more slot length the flat tubes as additional Length tolerance for the Joining process or the Compensation of length tolerances the individual flat tubes.

The Slot width of the flat tubes is in this case preferably on the partition wall thickness so tuned that at the intersection both slots a process-safe and liquid-tight connection created between flat tube and partition.

It can even - in particular in extreme cases - by the slot overlap partition wall and flat tube, a cavity sealed to the outside arise or are generated, which the process-reliable soldering between Partition and flat tube not adversely affected.

One inventive heat exchanger, and in particular a represented by the embodiment exemplary heat exchanger according to the invention, can in particular be part of a heating system of a motor vehicle be or for such a be determined.

1

heat exchangers

10

first collector

12

Interior of 10

14

Pipe- or tube-rib block

16

flat tube

18

Partial flat tube of 16

20

Channel in 16

22

Longitudinal axis of 16

24

Footbridge of 16

26

first tube row

28

second tube row

30

gap

32

ground

34

Flange of 32

36

first The End

38

slotted opening

40

interbars

42

Longitudinal partition in 10

44

first chamber of 12

46

second chamber of 12

48

Top of 10

50

slots

52

double arrow

54

Slot in 24 from 16

56

double arrow

Claims (22)

Heat exchanger with a first collector ( 10 ), in which at least by means of a longitudinal partition wall separate chambers ( 44 . 46 ) and with a tube-fin or tube block ( 14 ), who became the first collector ( 10 ) pipes ( 16 ) or pipe devices, which on the longitudinal partition ( 42 ) are fixed, the longitudinal partition ( 42 ) Slots ( 50 ), characterized in that pipes ( 16 ) or pipe facilities of the block ( 14 ) Slots ( 54 ) or paragraphs which in each case in the region of a respective slot ( 36 ) of the longitudinal partition ( 42 ) are positioned. Heat exchanger according to claim 1, characterized in that several or all tubes ( 16 ) or tube devices several transverse to her Longitudinal axis ( 22 ) spaced channels or sub-pipes ( 18 ) or chambers which are divided into different means of the longitudinal partition ( 42 ) separate chambers ( 44 . 46 ) of the first collector ( 10 ). Heat exchanger, in particular according to one of the preceding claims, with a first collector ( 10 ) and a tube-rib or tube block ( 14 ), whereby the first collector ( 10 ) a floor ( 32 ) and at least one longitudinal partition wall ( 42 ) to form separate chambers ( 44 . 46 ) internally ( 12 ) of the first collector ( 10 ), and wherein the block ( 14 ), in particular one-piece tubes ( 16 ) each having at least two perpendicular to the respective pipe longitudinal axis ( 22 ) spaced chambers ( 44 . 46 ) or channels ( 20 ) or partial pipes ( 18 ), wherein the tubes ( 16 ) with their first ends ( 36 ) in the ground ( 32 ) of the first collector ( 10 ) are plugged in such that in each case two different channels ( 20 ) of the same tube ( 16 ) in different, through the longitudinal partition ( 42 ) of the collector ( 10 ) separate chambers ( 44 . 46 ) of the first collector ( 10 ), and the longitudinal partition wall ( 42 ) on the floor ( 32 ) facing side in the region of the tubes ( 16 ) with slots ( 50 ), characterized in that the tubes ( 16 ) between those in different chambers ( 44 . 46 ) channels ( 20 ) or partial pipes ( 18 ) in the region of their first ends ( 36 ) with a slot ( 54 ) or paragraph. Heat exchanger according to claim 3, characterized in that the partition wall ( 42 ) and pipes ( 16 ) of the block ( 14 ) are designed and arranged such that slots ( 50 ) of the partition ( 42 ) each in the region of a slot ( 54 ) of a pipe ( 16 ) of the block ( 14 ) are arranged. Heat exchanger according to one of the preceding claims, characterized in that the tubes ( 16 ) between the pipe channels ( 20 ) a footbridge ( 24 ), in which the slot ( 54 ) or heel in the area of the first pipe end ( 36 ) is provided. Heat exchanger according to claim 5, characterized in that the slots ( 54 ) of the pipes ( 16 ) in the webs ( 24 ) of the pipes ( 16 ) are provided. Heat exchanger according to one of claims 1 to 4, characterized in that the slots ( 54 ) of the pipes ( 16 ) are at least partially bounded laterally by wall sections which are in the tubes ( 16 ) provided channels ( 20 ), or of wall sections of the sub-pipes ( 18 ). Heat exchanger according to one of the preceding claims, characterized in that the direction of the slot widths of the slots ( 50 ) of the partition ( 42 ) substantially perpendicular to the direction of the slot widths of the slots (FIG. 54 ) of the pipes ( 16 ) of the block ( 14 ). Heat exchanger according to one of the preceding claims, characterized in that the slot width of the in the partition wall ( 42 ) slots ( 50 ) each substantially the material thickness, in particular wall thickness of the web ( 24 ), this slot ( 50 ) each associated with pipe ( 16 ) in the area of the slot ( 54 ) of the pipe ( 16 ) limiting portion of the tube ( 16 ), or is greater. Heat exchanger according to one of the preceding claims, characterized in that the slot width of the tubes in the ( 16 provided slots ( 54 ) each substantially the wall thickness of the partition ( 42 ) in the area of the slots ( 50 ) of the partition ( 50 ), or is greater. Heat exchanger according to one of the preceding claims, characterized in that the tubes ( 16 ) in the region of their slots ( 54 ) or the boundaries of these slots ( 54 ) or at least part of these boundaries with the partition wall ( 42 ) are soldered in each case, in particular in the region of the slots ( 50 ) of the partition ( 42 ) or the boundaries of these slots ( 50 ) of the partition ( 42 ) or at least a part of these boundaries of the slots of the partition ( 42 ) that in this area the chambers separated by this partition ( 44 . 46 ) are sealed. Heat exchanger according to one of the preceding claims, characterized in that by means of the slots ( 50 ) of the longitudinal partition ( 42 ) and by means of the slots ( 54 ) of the pipes ( 16 ) Cavities are formed. Heat exchanger according to one of the preceding claims, characterized in that a respective slot ( 50 ) of the longitudinal partition ( 42 ) and a respective slot ( 54 ) of a pipe ( 16 ) overlap, in particular so that the overlap or separation - especially in the longitudinal direction of the tubes ( 16 ) - is greater than the length or depth of the respective slot of the longitudinal partition ( 42 ) in this direction. Heat exchanger according to one of the preceding claims, characterized in that the tubes ( 16 ) are designed as flat tubes. Heat exchanger according to one of the preceding claims, characterized in that channels of different tubes ( 16 ) or the partial pipes ( 18 ) of the pipes ( 16 ) at least two rows of tubes ( 26 . 28 ) form. Heat exchanger according to one of the preceding claims, characterized in that between adjacent tubes ( 16 ) Spaces ( 30 ) are formed for an air flow. Heat exchanger according to one of the preceding claims, characterized in that the tubes ( 16 ) with its second, the first ends ( 36 ) opposite ends open into a second collector. Method for producing a heat exchanger ( 1 ), one with a bottom ( 32 ) provided first collector ( 10 ) in which by means of at least one to the ground ( 32 ) extending longitudinal partition at least two different chambers are formed, and a pipe or tube-rib block ( 14 ) with a plurality of, in particular parallel to each other, tubes ( 16 ), these pipes ( 16 ) are each formed in one piece and at least two, in particular parallel to each other, channels ( 20 ) or partial pipes ( 18 ), which are divided into different chambers ( 44 . 46 ) of the first collector ( 10 ), whereby in the first collector ( 10 ) facing end portion of the tubes ( 16 ) between the channels ( 20 ) or partial pipes ( 18 ) of this respective tube ( 16 ) a slot is provided and wherein the partition wall ( 42 ) in your the block ( 14 ) facing end portion with slots ( 50 ), with the steps: inserting the tubes ( 16 ) in openings in the ground ( 32 ) of the first collector ( 10 ) are provided by the first collector ( 10 ) separate soil ( 32 ) for producing a first assembly (first step); Inserting the partition ( 42 ) in the first collector ( 10 ), with this insertion, the soil ( 32 ) of the first collector ( 10 ) from the collector ( 10 ) is separated to produce a second assembly (second step); wherein the first step is independent of the second step, so that no particular order is given; Assembling the first and second assemblies such that the slots of the tubes ( 16 ) in each case in the region of an assigned slot ( 50 ) of the partition ( 42 ) are positioned, in particular to form a cavity (third step); Method according to claim 18, characterized in that the tubes ( 16 ) (in the first step) after insertion into the bottom of the first collector ( 10 ) are expanded to produce a clamping fit in the ground or to increase the holding force of such a clamping seat or to reduce the dimensions of a soldering gap. Method according to one of Claims 18 and 19, characterized that the first and the second assembly in the third step so be composed that, in particular in the direction of the longitudinal axes the slit depths of the slots of the tubes and the Slots of the longitudinal partition each are larger as the depth in this direction of the of these slots each formed cavity. Method according to one of claims 18 to 20, characterized in that the longitudinal partition wall ( 42 ) with the tubes in each case in the region of the slots ( 50 . 54 ) is soldered, in particular in the region of the boundaries of the respective slots ( 50 . 54 ). Process according to any one of claims 18 to 21 for the preparation a heat exchanger according to one the claims 1 to 17.