DE102008053308A1 - heat exchangers - Google Patents

Abstract

In a heat exchanger (1), in particular heat exchanger (1) for a motor vehicle, which is constructed from modular heat exchanger components (2), comprising the following types of heat exchanger components (2): a multiplicity of tubes (3), in particular flat tubes (4), a plurality of discs (6) and at least one connecting piece (8) with an inlet opening for introducing a fluid and / or an outlet opening (15) for discharging the fluid, wherein the outer contour of the heat exchanger (1) at least partially from the outer contour of the heat exchanger components ( 2), the reliable arrangement of a same type of heat exchanger component (2) at the intended location within the heat exchanger (1) should be ensured safely. This object is achieved in that heat exchanger components (2) of the same type have a different outer contour, which forms an outer contour of the heat exchanger (1), so that heat exchanger components (2) of the same type with different functions due to the different outer contour are distinguishable.

Description

The The invention relates to a heat exchanger according to the The preamble of claim 1 and a method for producing a heat exchanger according to the preamble of claim 9. Furthermore, the invention relates to an automotive air conditioning system and a motor vehicle.

heat exchangers serve to transfer heat from a fluid to another fluid. For example, by a heat exchanger Heat from a coolant to the Transfer ambient air. This is particularly useful in motor vehicles, in which the heat exchanger serves to that of the internal combustion engine release released waste heat to the ambient air. Of the Heat exchanger generally consists of two manifolds between which a plurality of tubes are arranged. About that In addition, in motor vehicles, heat exchangers be used to, for example, engine or transmission oil, Air, z. B. charge air, to cool or in air conditioners for Motor vehicles to cool a refrigerant, d. H., that the heat exchanger as a condenser within a Refrigeration circuit is used.

to Production of heat exchangers are different manufacturing processes known. In the so-called modular design are different Heat exchanger components in a block paver to a heat exchanger composed. The heat exchanger components are generally flat tubes, Discs with and without openings and two connecting pieces, at which an inlet or an outlet opening for the fluid is formed. In the flat tubes are in general Arranged turbulence inserts and the ends of the flat tubes respectively closed by means of an insert. In the area of the ends of the Flat tubes are arranged recesses. Be on a flat tube each in the area of the end of the discs with openings hung up. The recesses of the flat tubes come to cover with the breakthroughs of the discs. On the two discs is then placed again according to a flat tube and this Repeated process repeatedly, leaving the recesses and breakthroughs form a manifold of the heat exchanger. The flat tube consists of a top and bottom wall, each in the area the ends of the recess is arranged. Between the cover and Bottom wall, the fluid can flow into the flat tube. From the collecting pipe, that from the recesses and the breakthroughs is formed, the fluid flows into the flat tubes.

Continue to take over the discs differ as a type of heat exchanger component Functions. For example, a disc with no breakthrough be provided a vertical threaded hole. Furthermore, can also on the discs with breakthrough at various points, for example, horizontal Tapped holes should be formed. The threaded holes serve for example to the heat exchanger on the body of a motor vehicle to attach or other components on the heat exchanger to fix the threaded holes. Thus have a type of heat exchanger component, d. H. a disc, different functions.

at The production of the heat exchanger will be the individual Slices each placed on the flat tubes. It may be too Errors come when the wrong discs, d. H. with a wrong function, placed in the wrong position inside the heat exchanger become. This leads to considerable damage because the heat exchanger in general for the usual Use is no longer appropriate if the error is not detected or upon detecting the misplacement of the discs during the production, in particular during the placing of the Slices and the flat tubes on top of each other, part of the already built heat exchanger back into more expensive and consuming must be reduced.

The EP 0 961 095 B1 shows a generic heat exchanger. An outer contour of the disks forms an outer contour of the heat exchanger. However, the outer contour of all slices is identical, so that a distinction between different slices due to the outer contour is not possible.

The The object of the present invention is therefore, in a Heat exchanger, an automotive air conditioning system, a motor vehicle and a method of manufacturing a heat exchanger Reliably arranging a same type of heat exchanger component safe in the intended location within the heat exchanger to ensure. The heat exchanger and the automobile air conditioner and the motor vehicle should be inexpensive to manufacture and can take over the functions provided during operation. Furthermore, the method for producing the heat exchanger can be performed easily and inexpensively.

This object is achieved with a heat exchanger for a motor vehicle, which is constructed from modular heat exchanger components comprising the following types of heat exchanger components: a plurality of tubes, in particular flat tubes, a plurality of discs and at least one connector with an inlet opening for introducing a fluid and / or an outlet opening for discharging the fluid, wherein the outer contour of the heat exchanger is at least partially formed by the Außenkontor the heat exchanger components, wherein heat exchanger components of the same type having a different outer contour, which forms an outer contour of the heat exchanger, so that heat exchanger components of the same type, in particular with different functions, due to the different outer contour are distinguishable. The heat exchanger components have different outer contour on different functions, which also forms an outer contour of the heat exchanger. This makes it possible to differentiate heat exchanger components of the same type due to the geometry of the outer contour.

Especially have the heat exchanger components of the same type the different outer contour different functions or properties.

In In another embodiment, the discs are with or without openings educated. Slices with breakthroughs serve to one Collecting tube within the heat exchanger due to the arrangement of discs with breakthrough on top of each other. slices Without breakthroughs are generally at the top and bottom End of the heat exchanger arranged to the one of the discs with breakthrough and recesses in pipes, in particular flat pipes, completed collecting tube.

In a further embodiment is at a first, z. B. upper, and preferably also a second, e.g. B. lower, end of the heat exchanger Final part arranged.

Preferably is the different outer contour by means of at least one Projection and / or formed at least one recess.

In Another variant is the at least one projection and / or the at least one recess in cross section rectangular. In particular, the at least one projection and / or the at least a recess in cross-section also square. Furthermore the at least one projection and / or the at least one can Recess, for example, the shape of a knob, a cone or part of a sphere.

expedient is formed in the region of one end of the tubes a recess.

In a further embodiment is a partial section of Pipes arranged in the area of the end of the pipes between the disks and the apertures of the discs are at least partially in coincidence with the recesses of the flat tubes, so that the breakthroughs and the recesses form a manifold.

Especially Turbulence inserts are arranged in the tubes and / or the ends the tubes closed by means of an insert.

In a further embodiment is on the surface of Heat exchanger components, in particular the discs, the flat tubes and the fittings and the end parts, with a Lot plated. This allows them to be assembled into a single unit Heat exchanger components in an oven at temperatures of For example, be soldered at 600 ° C, so that the heat exchanger components fluid-tightly interconnected are.

at a method according to the invention are heat exchangers from heat exchanger components in modular design with the steps manufactured: construction of heat exchanger components comprising pipes, Washers and at least one connecting piece, in particular at least two connecting pieces, arranging the heat exchanger components to form a unit, fluid-tight connection in the unit contained heat exchanger components, wherein heat exchanger components of the same type have a different outer contour, which form an outer contour of the heat exchanger, so that when arranging the different types of heat exchanger components to a structural unit by means of a test component heat exchanger components of the same type with different functions due to the different ones Outer contour can be distinguished to avoid a wrong Arranging heat exchanger components of the same type with different functions.

The test component is generally a mechanical component whose surface or geometry is designed to be complementary to the outer contour or geometry of the heat exchanger components. As a result, when arranging the heat exchanger components, which are generally stacked in a block paver, e.g. Example, manually, semi-automatically or automatically, is performed, the heat exchanger components, which are arranged in a position other than the intended location, other than the intended position. The heat exchanger components are generally stacked on a sloping table. A heat exchanger component of the same type, which performs another function, thus occupies a different position on the table of the block paver when placed in a position other than the intended position. This other position can be detected and thus the heat exchanger component replaced by a heat exchanger component of the correct type. Manufacturing errors are avoided. In addition, the test component in other ways, for. As optical, electrical or mag netic, the surface or geometry, ie the outer contour of the heat exchanger components detect or scan. The location of a Wärmetau shear component is thus determined by the blueprint of the heat exchanger component. An incorrect position of the heat exchanger component results from placing the heat exchanger component in the position which is not provided, ie is wrong.

In Another embodiment is between two tubes each arranged in the region of one end of the tubes depending on a disc.

In a complementary variant will be on a pipe two slices hung up.

In another variant are the discs with openings provided and on the tubes in the region of one end of the tube Recesses formed and when arranging the pipes and discs the breakthroughs and recesses are at least partially brought into cover.

In a further embodiment, the test component respectively in corresponding sections one to the outer contour of the provided in this position type of heat exchanger component complementary shape, so when arranging a in this position not provided type of heat exchanger component the unscheduled type of heat exchanger component a assumes another position than the intended heat exchanger component.

In an additional embodiment of a monitoring sensor in arranging the heat exchanger components, the positions the various types of heat exchanger components detected and upon the occurrence of an unintended position of a Type of heat exchanger component when placing an error message or discontinuation of the manufacturing process carried out and / or the unforeseen type of heat exchanger component exchanged the intended type of heat exchanger component becomes. The monitoring sensor may, for example, an optical and / or be mechanical and / or electrical monitoring sensor. Furthermore, the location of the heat exchanger components also at a manual block paver checked by the operators become.

In Another embodiment of an operator at a Arranging the heat exchanger components the positions of different types of heat exchanger components, in particular optically detected and upon the occurrence of an unintended position of a Type of heat exchanger component a discontinuation of the manufacturing process executed and / or the unanticipated type of heat exchanger component is determined by the foreseen type of heat exchanger component replaced.

at The production of the heat exchanger will be the individual Heat exchanger components arranged to form a structural unit. This is generally done by superimposing the individual Heat exchanger components in a block paver on a table executed. After assembling the individual heat exchanger components to a unit they are under a clamping device Preload compressed. The individual heat exchanger components are provided on the surface with a solder, d. H. are plated with solder. The under biased unit is then heated to temperatures in a soldering oven heated in the range of about 600 ° C. As a result, the individual heat exchanger components with each other soldered so that this fluid-tightly interconnected are. As a fluid, for example, a cooling liquid or air used.

A Automotive air conditioning or a motor vehicle includes the in this Application described heat exchanger.

in the The following will be an embodiment of the invention with reference to the accompanying drawings described. It shows:

1 a schematic perspective view of a heat exchanger, partially cut away,

2 a schematic perspective view of a disc without representation of the special outer contour,

2a a perspective view of the disc without breakthrough with a vertical threaded hole in a first embodiment,

2 B a perspective view of the disc with breakthrough with a front horizontal threaded hole in a second embodiment,

2c a perspective view of the disc with breakthrough with a rear horizontal threaded hole in a third embodiment,

2d a perspective view of the disc without breakthrough in the fourth embodiment,

2e a perspective view of the disc with breakthrough in a fifth embodiment,

3 a partial perspective view of a flat tube,

4 a perspective view of a connector,

5 a section VV according to 4 with the flat tube and

6 a section VI-VI- according to 3 ,

In 1 is a schematic perspective view of a heat exchanger 1 partially cut open. The heat exchange 1 serves for cooling a cooling liquid for the internal combustion engine of a motor vehicle and is for this purpose of an air flow 16 flows through, the flow direction is indicated by the arrow.

In the heat exchanger 1 are above each other as flat tubes 4 trained pipes 3 arranged between those corrugated ribs 13 available. The ribs 13 serve, on the one hand, the flat tubes 4 mechanically connect to each other and also the surface of the heat exchanger 1 increase, thereby improving the cooling performance. At one end 10 the flat tubes 4 each is a recess 5 educated ( 3 ). The flat tube 4 consists of a cover wall 20 , a bottom wall 21 as well as two side walls 22 , The top wall 20 and the bottom wall 21 are at a small distance above each other by means of the two curved side walls 22 connected with each other. The recess 5 is thus both in the top and in the bottom wall 20 . 21 available. In the area of the recess 5 of the flat tube 4 Thus, a fluid between the top and the bottom wall 20 . 21 in the interior of the flat tube 4 flow. The end 10 of the flat tube 4 is by means of an insert 12 sealed fluid-tight ( 3 and 6 ). Inside the flat tube 4 is a turbulence insert 11 arranged. The turbulence insert 11 is formed like a rib and generates a turbulent flow in the interior of the flat tube by means of a mixing of the cooling liquid. This shows the flat tube 4 when flowing through with the fluid substantially at the same surface temperature, thereby the cooling capacity of the heat exchanger 1 can be increased.

Next to the flat tubes 4 exist in the heat exchanger 1 also slices 6 as different types of heat exchanger components 2 , The disks 6 are having a breakthrough 7 Mistake ( 2 ). Inside the heat exchanger 1 are area of the end 10 of the flat tube 4 between two flat tubes 4 one disc each 6 arranged. In 1 For the sake of simplicity, the heat exchanger components are only in the upper and in the lower area 2 shown. The in the heat exchanger 1 arranged on top of each other 6 with the breakthroughs 7 and the flat tubes 4 with the recesses 5 form with it by means of the recesses 5 and the breakthroughs 7 a collection pipe.

Further, in the heat exchanger 1 in the upper and lower area in each case a connection piece 8th available. The lower connection piece 8th has an outlet opening 15 and the upper connector 8th an inlet port (not shown). Into the inlet opening, the cooling liquid is introduced for cooling and the cooled cooling liquid is discharged from the outlet opening 5 again from the heat exchanger 1 led out. The connection piece 8th is with a slot 17 Mistake ( 5 ) in each case a flat tube 4 is arranged. Furthermore, the fittings have 8th also a breakthrough 7 on ( 5 ). The breakthrough 7 of the connection piece 8th thus also serves to form the manifold inside the heat exchanger 1 , Instead of the arrangement of the two fittings on the left upper and the lower left side of the heat exchanger 1 For example, a first connector 8th bottom left and a second connector 8th right above in the heat exchanger 1 be arranged (not shown).

The top and bottom of the heat exchanger 1 is from a connection part 14 completed. The connection part 14 is with a disc 6 , a connection piece 8th as well as the corrugated rib 13 connected. The flat tube 4 , the disks 6 , the fittings 8th , the inserts 12 , the corrugated ribs 13 , and the final parts 14 make heat exchanger components 2 of the heat exchanger 1 dar. From these heat exchanger components 2 becomes the heat exchanger 1 produced in a block paver.

The disks 6 as a same type of heat exchanger component 2 can for the heat exchanger 1 assume different functions. The disks 6 For example, you can do it without a breakthrough 7 be educated ( 2a and 2d ). A disk 6 without breakthrough 7 For example, with a vertical threaded hole 18 be provided ( 2a ). In addition, also can slices 6 with a breakthrough 7 in different places with a horizontal threaded hole 19 be educated ( 2 B . 2c ). In addition, discs can also 6 with and without recess even without a vertical or horizontal threaded hole 18 . 19 be educated ( 2d and 2e ). The threaded holes 18 . 19 serve to the heat exchanger 1 to attach to a body of the motor vehicle or other components on the heat exchanger 1 to fix.

The same type of heat exchanger component 2 ie the disc 6 , has a different one Function for the heat exchanger 1 , In the production of the heat exchanger 1 in the block paver the individual slices must 6 be superimposed. This is shown by the discs 6 with the various functions, in particular a function without an additional fixation option according to the discs 6 of the 2d and 2e , a different outer contour 9 on. The outer contour 9 is in this case of substantially rectangular cross-section projections 23 and recesses 24 educated ( 2a to 2e ). When stacking the individual discs 6 in the block paver (not shown) can different slices 6 according to the 2a to 2e to be hung up in the wrong position. The block paver is provided with a test component (not shown). The test component has one to the outer contour 9 the discs 6 complementary shape or geometry. When inserting a wrong disc 6 takes the wrong disc with it 6 another position on a blocker tiger's table. The test component is each on a special heat exchanger 1 designed. The used five different discs 6 each have different outer contours 9 on. The test component is complementary to the outer contour at the corresponding section 9 the disk provided at this position 6 is trained. When placing a wrong disc 6 in this position can the disc 6 do not penetrate sufficiently far into the test component, because the complementary shape of the test component prevents this. The length of all discs 6 is equal to. This is a wrong disc 6 in the manufacture of the heat exchanger 1 on a table of a block paver opposite the other slices 6 from. This can be detected both manually by an operator and automatically by a monitoring sensor and then either automatically the production process can be aborted or the operator can do the wrong disc 6 through the right disc 6 , which is provided at this location, replace (not shown).

Overall, considered with the heat exchanger according to the invention 1 and the method according to the invention for producing a heat exchanger 1 significant benefits. In the production of the heat exchanger 1 may be manufacturing defects due to misplaced disks 6 or heat exchanger components 2 be avoided in a simple way. A different outer contour 9 the heat exchanger components 2 makes it possible to arrange heat exchanger components during manufacture 2 of the same type with different functions in the wrong position inside the heat exchanger 1 easy to recognize. This can be avoided in manufacturing errors and thus the cost of the heat exchanger 1 and the method for producing the heat exchanger 1 be lowered.

1

heat exchangers

2

heat exchange member

3

pipe

4

flat tube

5

recess

6

disc

7

breakthrough

8th

connector

9

outer contour

10

The End of the pipe

11

turbulence insert

12

insert

13

corrugated fin

14

final part

15

outlet

16

airflow

17

slot in final piece

18

vertical threaded hole

19

horizontal threaded hole

20

top wall

21

bottom wall

22

sidewall

23

head Start

24

recess

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 0961095 B1 [0006]

Claims (15)

Heat exchanger ( 1 ), in particular heat exchangers ( 1 ) for a motor vehicle consisting of modular heat exchanger components ( 2 ), comprising the following types of heat exchanger components ( 2 ) - a variety of pipes ( 3 ), in particular flat tubes ( 4 ), - a plurality of discs ( 6 ) and - at least one connecting piece ( 8th ) with an inlet opening for introducing a fluid and / or an outlet opening ( 15 ) for discharging the fluid, wherein the outer contour ( 9 ) of the heat exchanger ( 1 ) at least partially from the Außenkontor ( 9 ) of the heat exchanger components ( 2 ), characterized in that heat exchanger components ( 2 ) of the same type a different outer contour ( 9 ) having an outer contour ( 9 ) of the heat exchanger ( 1 ), so that heat exchanger components ( 2 ) of the same type due to the different outer contour ( 9 ) are distinguishable. Heat exchanger according to claim 1, characterized in that the heat exchanger components ( 2 ) of the same type with the different outer contour ( 9 ) have various functions. Heat exchanger according to claim 1 or 2, characterized in that the discs ( 6 ) with or without breakthroughs ( 7 ) are formed. Heat exchanger according to one or more of the preceding claims, characterized in that the different outer contour ( 9 ) by means of at least one projection ( 23 ) and / or at least one recess ( 24 ) is formed. Heat exchanger according to claim 4, characterized in that the at least one projection ( 23 ) and / or the at least one recess ( 24 ) is rectangular in cross-section. Heat exchanger according to one or more of the preceding claims, characterized in that in the region of one end ( 10 ) of the pipes ( 3 ) a recess ( 5 ) is trained. Heat exchanger according to claim 6, characterized in that a partial section of the tubes ( 3 ) in the area of the end ( 10 ) of the pipes ( 3 ) between the discs ( 6 ) and the breakthroughs ( 7 ) of the discs ( 6 ) at least partially coinciding with the recesses ( 5 ) of the flat tubes ( 4 ), so that the breakthroughs ( 7 ) and the recesses ( 5 ) form a manifold. Heat exchanger according to one or more of the preceding claims, characterized in that in the tubes ( 3 ) Turbulence inserts ( 11 ) are arranged and / or the ends ( 10 ) of the pipes ( 3 ) by means of an insert ( 12 ) are closed. Method for producing a heat exchanger ( 1 ), in particular a heat exchanger ( 1 ) according to one or more of the preceding claims, from heat exchanger components ( 2 ) in modular design with the steps - Creating heat exchanger components ( 2 ), comprising tubes ( 3 ), Slices ( 6 ) and at least one connecting piece ( 8th ), - arranging the heat exchanger components ( 2 ) to a structural unit, - fluid-tight connection of the heat exchanger components contained in the structural unit ( 2 ), characterized in that heat exchanger components ( 2 ) of the same type a different outer contour ( 9 ) having an outer contour ( 9 ) of the heat exchanger ( 1 ), so that when arranging the various types of heat exchanger components ( 2 ) to a structural unit by means of a test component heat exchanger components ( 2 ) of the same type with different functions due to the different outer contour ( 9 ) can be distinguished to avoid a wrong arrangement of heat exchanger components ( 2 ) of the same type with different functions. Method according to claim 9, characterized in that between two pipes ( 3 ) in each case in the area of one end ( 10 ) of the pipes ( 3 ) one disc each ( 6 ) is arranged. A method according to claim 9 or 10, characterized in that on a pipe ( 3 ) two discs ( 6 ). Method according to one or more of claims 9 to 11, characterized in that the test component in each case in corresponding sections to the outer contour ( 9 ) of the type of heat exchanger component ( 2 ) has complementary shape, so that when arranging a not foreseen in this position type of heat exchanger component ( 2 ) the non-intended type of heat exchanger component ( 2 ) assumes a different position than the intended heat exchanger component ( 2 ). A method according to claim 12, characterized in that of a monitoring sensor in an arrangement of the heat exchanger components ( 2 ) the positions of the different types of heat exchanger components ( 2 ) and when an unintended position of a type of heat exchanger component ( 2 ) is executed when placing an error message and / or a termination of the manufacturing process and / or the unanticipated type of heat exchanger component ( 2 ) by the anticipated type of heat exchanger component ( 2 ) is exchanged. A method according to claim 12, characterized in that by an operator when arranging the heat exchanger components ( 2 ) the positions of the different types of heat exchanger components ( 2 ), in particular optically, and when an unintended position of a type of heat exchanger component ( 2 ) an abort of the manufacturing process is carried out and / or the unanticipated type of heat exchanger component ( 2 ) by the anticipated type of heat exchanger component ( 2 ) is exchanged. Motor vehicle air conditioning system or motor vehicle, characterized in that the motor vehicle air conditioning system or the motor vehicle has a heat exchanger ( 1 ) according to one or more of claims 1 to 8.