EP1784612A1

EP1784612A1 - Radiator

Info

Publication number: EP1784612A1
Application number: EP05763122A
Authority: EP
Inventors: Jens Richter
Original assignee: Behr GmbH and Co KG
Current assignee: Mahle Behr GmbH and Co KG
Priority date: 2004-08-25
Filing date: 2005-07-12
Publication date: 2007-05-16
Also published as: DE102004041308A1; US20070261821A1; WO2006021267A1; CN101006315A; JP2008510956A

Abstract

The invention relates to a radiator, in particular for a motor vehicle, comprising at least one coolant conduit device (1), in particular a plurality of coolant conduit devices such as pipes, which is or are traversed by a coolant. The aim of the invention is to create a radiator with a greater degree of efficiency than conventional radiators. To achieve this, the coolant conduit device (1) consists of a one-piece element that comprises two halves (11, 12), which are interconnected by a bending edge (8) that runs in the longitudinal direction of the coolant conduit device (1).

Description

BEHR GmbH & Co. KG Mauserstrasse 3, 70469 Stuttgart

cooler

The invention relates to a radiator, in particular for a motor vehicle, having at least one coolant line device, in particular a plurality of coolant line devices, such as pipes, through which a cooling medium to be cooled flows.

International Patent Publication WO 99/13282 and US Pat. No. 2002/0139520 A1 disclose coolers whose coolant conduit tubes are each formed from two punched and embossed plates which are soldered together at their circumference. The soldered surfaces reduce the cross-section of the coolant line pipes through which the cooling medium flows.

The object of the invention is to provide a cooler, in particular for a motor vehicle, with at least one coolant line device, in particular a plurality of coolant line devices, such as pipes, which is or are to be flowed through by a cooling medium to be cooled, which has a better efficiency than conventional coolers.

The object is achieved in a cooler, in particular for a motor vehicle, with at least one coolant line device, in particular a multiplicity of coolant line devices, such as pipes, through which a cooling medium to be cooled flows, or are thereby dissolved, the coolant-conducting device is formed integrally from two parts, in particular halves, which are connected to one another by a bending edge running in the longitudinal direction of the coolant-conveying device. Since the two parts or halves are already connected to one another at the bending edge in one piece, they only have to be soldered together on one side. As a result, the cross section through which the cooling medium flows increases. In addition, the number of individual parts required is reduced by half, since only one part is required per coolant line device.

A preferred exemplary embodiment of the cooler is characterized in that the coolant line device is formed by a substantially rectangular plate, which is divided by the bending edge into two elongate halves which are folded together. The plate is preferably an embossed stamped part made of a metallic material which can be produced simply and inexpensively. In the folded state, the plate halves are congruent to each other.

Another preferred exemplary embodiment of the cooler is characterized in that the plate has a peripheral edge which is opposite the plate surface. Preferably, the plate is impressed within the peripheral edge, wherein the depth of the embossed surface is half the inside diameter of the coolant line device.

Another preferred exemplary embodiment of the cooler is characterized in that the peripheral edge is interrupted at the points of intersection with the bending edge. In the area of the bending edge, the plate has the same depth over the entire length of the bending edge. This avoids unwanted damage to the plate material in the region of the bending edge during folding.

Another preferred exemplary embodiment of the cooler is characterized in that the two plate halves rest against each other in the folded state with the peripheral edge. Preferably, the plate halves are soldered to each other at the peripheral edge. Another preferred exemplary embodiment of the cooler is characterized in that in each case a connecting piece is formed at the ends of the plate halves. The connection stubs are preferably formed by deep-drawn cups, which serve to connect two superimposed coolant line devices with one another. This has the advantage that separate connecting pipes can be omitted.

Another preferred exemplary embodiment of the cooler is characterized in that a plurality of elevations are formed on each plate half, which abut one another in the folded state of the plate halves. The elevations which are soldered together are preferably embossed studs which contribute to improving the heat transfer and as tie rods to increase the strength.

Another preferred exemplary embodiment of the cooler is characterized in that a turbulence insert is arranged between two folded plate halves. The preferably soldered with the plate halves turbulence insert serves to improve the heat transfer and as a tie rod to increase the strength.

A further preferred exemplary embodiment of the cooler is characterized in that a plurality of coolant line devices are stacked on top of one another and in each case an air guide device is arranged between two coolant line devices. The louver preferably comprises a plurality of air guide ribs which are integrally connected to each other.

A further preferred exemplary embodiment of the cooler is characterized in that the coolant line device and the air guide device are formed from the same sheet metal material, in particular from aluminum sheet. This has the advantage that the complete radiator is formed only from one material and is therefore easily recyclable. - A -

Preferably, the cooler is designed as an oil cooler, coolant radiator or fuel cooler, but other applications of the invention are possible.

Further advantages, features and details of the invention will become apparent from the following description in which reference to the Zeich¬ statement various embodiments are described in detail. In this case, the features mentioned in the claims and in the description can each be inventive in their own right or in any combination. Show it:

FIG. 1 shows a coolant conduit according to the invention in the unfolded state in plan view;

Figure 2 is an enlarged detail of Figure 1;

FIG. 3 shows the view of a section along the line III-III in FIG. 1;

Figure 4 is a right side view of the coolant pipe of Figure 1;

FIG. 5 shows the coolant line pipe from FIG. 1 in the half-folded state;

Figure 6 is a side view of the half-folded Kühlmittellei¬ ment tube of Figure 5;

FIG. 7 shows an enlarged detail of the coolant conduit shown in FIG. 1 according to a further embodiment with nubs.

Figure 8 is a perspective view of a turbulence insert; FIG. 9 shows the coolant line pipe from FIG. 1 in the half-folded state with an inserted turbulence insert, as shown in FIG. 8;

FIG. 10 shows the coolant line pipe from FIG. 1 in the completely folded or folded state;

Figure 11 is a side view from the left of the Kühlmit¬ illustrated in Figure 10 callyitungsrohres;

FIG. 12 shows a front view of a cooler with a multiplicity of coolant tubes soldered together, between which air guiding devices are arranged;

Figure 13 is a sectional view taken along the line XIII-XIII in Figure 12;

Figure 14 shows the radiator of Figure 12 in plan view and

FIG. 15 shows a sectional view through two soldered connecting pieces of the cooler from FIG. 12 in an enlarged view.

FIG. 1 shows a coolant line pipe 1 according to the invention in the unfolded state. The coolant pipe 1 is formed by a plate 4, which has substantially the shape of a rectangle whose corners are rounded. The plate 4 is a stamped part made of aluminum sheet, which has a bending edge 8, by which the plate 4 is divided longitudinally into two equal halves 11 and 12. The bending edge 8 simultaneously represents an axis of symmetry of the plate 4. The plate 4 is bounded on the outside by a peripheral edge 15, which serves to solder the two plate halves 11 and 12 in the folded or folded state together. Within the circumferential edge 15, the plate halves 11 and 12 are impressed into the plane of the drawing, ie recessed, so that the peripheral edge 15 is raised above the plate halves 11 and 12. In the end regions of the plate halves 11 and 12, a connecting piece 21, 22, 23, 24 is formed in each case. The Connecting stubs 21 to 24 are essentially in the form of pipe pieces which serve to connect two superposed coolant duct pipes.

In Figure 2, a detail of Figure 1 is shown enlarged. In the enlarged section, it can be seen that the circumferential edge 15 is not continuous in the region of its point of intersection with the bending edge 8, but is interrupted in a section 26. In the same way, the peripheral edge 15 has also broken at the other end of the bending edge 8. The interruption of the circumferential edge 15 in the section 26 ensures that the plate halves 11 and 12 have a constant embossing depth in the region of the bending edge 8.

In the sectional view shown in FIG. 3, it can be seen that the connection piece 21 has a substantially circular-cylinder jacket-shaped side wall 30, which is closed off by a base 31. In the same way, the connecting piece 22 comprises a substantially kreiszylin¬ dermantelförmige side wall 33, which is closed by a bottom 34.

In the side view of FIG. 4 it can be seen that the surface of the plate halves 11 and 12 is spaced from the peripheral edge 15 by an embossing depth t, and indeed also in the region of the section 26. The length or height of the connecting stubs 22, 23 is indicated in Figure 4 with h.

FIG. 5 shows the coolant line pipe 1 in the half-folded or folded-up state. The plate halves 11 and 12 are, with respect to the bending edge 8, arranged at an angle of 90 ° to each other. In FIG. 5 it can be seen that the bottoms 31, 34 of the connecting stubs 21, 22 are not closed, but are equipped with a central through-hole 38, 39. The through holes 38, 39 provide flow connections between two stacked coolant line tubes. FIG. 6 shows a side view of the coolant conduit tube 1 half folded in FIG. In this illustration, the impressing depth t of the surface of the plate halves 11 and 12 as well as the length or the height h of the connecting pieces 21 and 24 is also designated once again.

FIG. 7 shows an enlarged detail of the coolant line pipe 1 from FIG. 1 according to a further exemplary embodiment. In the Plat¬ tenten halves 11 and 12 are a plurality of nubs 41, 42; 45, 46 embossed, which extend into the plane of the paper. The knobs 41, 42 and 45, 46 come into abutment at their free ends when the plate halves 11 and 12 are folded together or folded together. The knobs serve to increase the heat transfer and increase the strength of the folded coolant pipe 1.

A turbulence insert 50 is shown in perspective in FIG. 8, which can be inserted into the coolant conduit tube 1 instead of the dimples, as shown in FIG. The turbulence insert 50 has the same function and effect as the nubs in the embodiment shown in FIG.

FIG. 10 shows a plan view of a completely folded-up or approximately collapsed coolant line pipe 1 in plan view. In a synopsis with the side view from the left shown in FIG. 11, it can be seen that the two plate halves 11 and 12 abut one another on the peripheral edge 15. There, the plate halves 11 and 12 are soldered together. In the region of the bending edge 8, the plate halves 11 and 12 are integrally connected to one another. The connecting pieces 22 and 23 rise in opposite directions from the plate halves 11 and 12.

In FIGS. 12 to 14, a brazed-together radiator is shown in different

Illustrated views comprising nine coolant pipes 61 to 69, which are soldered together at their connection piece into a block. Above and below the radiator block is bordered by closing plates 70 and 71. The coolant line pipe 61 has at the top two connecting stubs 73 and 74, which are closed by the end plate 70. The connecting piece 73 serves, for example, as an inlet connection for the cooling medium. The connection stub 74 serves, for example, as an outlet stub for the cooling medium. On its underside, the coolant conduit 61 has two connection ports 75 and 76. The Kühlmittel¬ line pipe 71 is located with its connection piece 75 and 76 on two Ver¬ connection stub 77 and 80, which are formed on the coolant pipe 62. The connection pieces 76 and 80 as well as 75 and 77 are soldered to one another and create a flow connection between the cooling medium pipes 61 and 62. Two connecting pieces 78 and 79 are formed on the underside of the coolant pipe sleeve 62, which are connected in the same way with the corresponding ones Connecting stub of the arranged below coolant line pipe 63 are connected. Between the Ab¬ closing plate 70 and the coolant line pipe 61 is a Luftleiteinrich¬ device 110 is arranged. The air guiding device 110 is a zigzag-shaped corrugated rib structure. Between each two coolant line pipes 61, 62; 62, 63 is in each case an air guiding device 111; 112 arranged.

In FIG. 15, the bending edge of the coolant pipe 61 is designated by 80. On the side opposite the bending edge 80, the two plate halves 81 and 82 are soldered together at their peripheral edge 84. The plate halves 91 and 92 of the Kühlmitteileitungsrohres 62 are soldered in the same way on the bending edge 90 opposite side of the peripheral edge 94. In Fig. 15, it can also be seen that the refrigerant piping tubes 61 and 62 have a through flow connection through the through holes 101 to 104.

Claims

Patent claims

1. cooler, in particular for a motor vehicle, with at least one coolant line device (1), in particular a plurality of coolant line devices (61-69), such as pipes, which is flowed through by a cooling medium to be cooled or, characterized in that the coolant line device (1 ) is integrally formed of two parts, in particular halves (11, 12), which are interconnected by a in the longitudinal direction of the coolant line device (1) extending bending edge (8).

2. cooler according to claim 1, characterized in that the Kühlmit- telleitungseinrichtung (1) of a substantially rectangular

Plate (4) is formed, which is divided by the bending edge (8) into two elongated halves (11, 12) which are folded.

3. cooler according to claim 2, characterized in that the plate (4) has a relation to the plate surface raised peripheral edge

(15).

4. cooler according to claim 3, characterized in that the umlau¬ fende edge (15) at the intersections with the bending edge (8) is interrupted.

5. cooler according to claim 3 or 4, characterized in that the two plate halves (11, 12) in the folded state with the peripheral edge (15) abut each other.

6. cooler according to one of claims 2 to 5, characterized in that at the ends of the plate halves (11, 12) in each case a Verbin¬ connecting piece (22-24) is formed.

7. cooler according to one of claims 2 to 6, characterized in that on each plate half (11; 12) a plurality of elevations (41, 42; 45,46) are formed, which in the folded state of the plate halves (11; 12) abut each other.

8. cooler according to one of claims 2 to 6, characterized in that between two folded plate halves (11, 12) a turbulence insert (50) is arranged.

9. A cooler according to one of the preceding claims, characterized in that a plurality of coolant line devices (61-69) are stacked above each other, and that between two Kühlmittelleitungs¬ devices (61, 62, 62, 63) each have a louver (111; 112) is arranged.

10. cooler according to claim 9, characterized in that the Kühlmit¬ telleitungseinrichtungen (61-69) and the louvers (110 to 112) from the same sheet metal, in particular aluminum sheet, are formed.