DE4401859A1 - Air cooled double heat exchanger - Google Patents

Abstract

The heat exchanger is for two separate coolant network blocks (1,1') in a single plane. The media to be cooled flows through the blocks in a double intersection stream. The cooling blocks have each an end box (2,2'), and a common deflection box (3) between them. Pref. the cooling blocks are fitted in tandem, with the deflection box in between, with the latter engageable at both sides. The two end boxes may be identical, and the deflection box may be of mirror symmetrical type.

Description

The invention relates to a double heat exchanger for two separate cooling circuits runs, which is preferably air-cooled and two separate cooling network blocks points.

Such heat exchangers can be found in numerous units and engines Application for recooling e.g. lubricating and gear oil. she are often designed as completely separate individual heat exchangers are extremely expensive and bulky.

The invention has for its object a ge heat exchanger with two separate cooling network blocks to create the smallest possible space orderly and can be produced at the lowest possible cost.

The object is achieved by the characterizing features of the claim one. Instead of the usual four expensive end boxes, only two and one are used simple deflection box needed. The arrangement of the cooling network blocks in one Level allows space-saving solutions.

It is advantageous that the cooling network blocks one behind the other and the deflection box are arranged between the cooling network blocks, the deflection box is loaded on both sides. This way it becomes a special place Achieved economical and economical solution that also includes the connections for the supply and return lines of the two media spatially separated and therefore are easy to use.  

Another advantage is that the two end boxes are of the same design, and the deflection box is mirror-symmetrical. In this way the manufacturing costs are significantly reduced. It is also advantageous that all components of the heat exchanger are made of light metal and preferred are connected by the dip soldering process. This makes a high one Efficiency of the heat exchanger is achieved with low weight, low dimensions and cost-effective production.

Further advantages of the invention result from the description and the Drawing in which an embodiment is shown schematically.

The only drawing shows a side view of a heat exchanger, partially cut. The heat exchanger consists of two cooling network blocks 1 , 1 ', which are connected via a deflection box 3 and are each closed by an end box 2 , 2 '. The cooling network blocks 1 , 1 'consist of liquid separators 7 , which are interconnected by cooling air fins 6 . The end boxes 2 , 2 'have in their interior a partition 5 which separates a coolant inflow region 9 and a coolant outflow region 10 from one another. The coolant inflow region 9 is in flow connection via a coolant supply line 4 and the coolant outflow region 10 via a coolant return line 4 'with the respective liquid network. The liquid circuits of the two cooling network blocks 1 , 1 'are separated by a deflection wall 11 of the joint order box 3 .

The double heat exchanger works as follows

The media to be cooled enter through the coolant supply lines 4 , 4 'into the coolant inflow region 9 of the end boxes 2 , 2 ' and from there pass through two coolant sheaths 7 to the common deflection box 3 , are deflected there on the common deflection wall 11 and flow over two further coolant sheaths 7 back into the coolant outflow region 10 and from there via the coolant return lines 4 'from the double heat exchanger. The cooling air lamellae 6 arranged between the cooling liquid shafts 7 are flowed through by cooling air. It transfers the heat of the coolant to the cooling air. The U-shaped course of the coolant flow through the coolant sheaths in connection with the transverse cooling air flow leads to two double cross-flow heat exchangers.

The dimensions and the weight of the double heat exchanger are small. Its mounted at the opposite end boxes Kühlmittelzulei obligations 4 and coolant return lines 4 'allow a clear separation of the coolant streams and a clear transfer of the coolant lines. Bores 8 in the end boxes 2 , 2 'and threaded holes 12 in the order steering box 3 are used to attach the double heat exchanger.

Claims (5)

1. Double heat exchanger, preferably air-cooled, for two separate cooling circuits, with two separate cooling network blocks, characterized in that the cooling network blocks ( 1 , 1 ') are arranged in a plane and in two-way cross-flow of the media to be cooled and that the Cooling network blocks ( 1 , 1 ') each have an end box ( 2 , 2 ') and between the cooling network blocks ( 1 , 1 ') have a common deflection box ( 3 ). 2. Double heat exchanger according to claim 1, characterized in that the cooling network blocks ( 1 , 1 ') one behind the other and the deflection box ( 3 ) between the cooling network blocks ( 1 , 1 ') are arranged, wherein the deflection box ( 3 ) is acted upon on both sides. 3. Double heat exchanger according to claim 1 or 2, characterized in that the two end boxes ( 2 , 2 ') are of identical design. 4. Double heat exchanger according to one of the preceding claims, characterized in that the deflection box ( 3 ) is formed mirror-symmetrically. 5. Double heat exchanger according to one of the preceding claims, characterized in that all components of the heat exchanger from Leichtme tall exist and are preferably connected by dip soldering.