DE7115268U - Heat exchanger with flat tubes arranged parallel to one another - Google Patents

Description

The invention relates to a heat exchanger with parallel ^ Flat tubes, the DurehflussrMame

for a fluid, among other things, form those for the formation of passages for a second fluid are held at a distance from one another by spacers, each of which is used to form of collecting spaces for the first fluid has a breakthrough, in the one from both ends of the same from one another the facing walls of the flat tubes engage raised collars.

Ha heat exchanger of this ax is in the not pre-published German utility model 7 110 667 in detail Described · In this heat exchanger according to the older proposal, there is a separation of connector parts of two sheets each forming a Fiaehrokr around the whole edge of the first sheet-formed edge of the second Sheet metal provided. The flat tubes can, however, also be formed in the known manner by flat metal sheets, which are held at a distance from each other by sealing strips are the / for the first fluid intended flow ' Limit the space of the flat tubes laterally. In both cases log-cladding is used to form the heat exchanger Sheets are used, which are assembled together with the spacers in a package, which in some way ait print raiiwwngatalfcea will. Bases together

• Ββββββββ> β · β · βΙβίβ1β effeasS0 £ tMeVB CsVHslft SeH flKeSBflSK fil ^ MpQSNKEI ÖBHS3P ifi • in the Utbefl elagefaart, where the * the elaeone parts to & aaa-

l places the task ze with in parallel
fea, fttr

in the

, a heat exchange flat tube of the package or a solder bath

7111211217.71

no special measures need to be taken.

In the case of a heat exchanger, this task is the one at the beginning mentioned type solved according to the invention in that to hold together the flat tubes and spacers composite package are provided through the collecting spaces penetrating clamping bolts.

This greatly simplifies the manufacture of the heat exchanger, since the clamping bolts only pass through the collecting spaces must be pushed through and screwed tight for the first fluid. The clamping bolts allow the Package] with the pressure required for soldering.

Another advantage of the invention is that even in the finished heat exchanger, the flat tubes are held firmly to the spacers by the clamping bolts, see above that the heat exchanger can also be exposed to pressures that could lead to a loosening of the solder joints, if the parts lying next to each other at the soldering points are also not would also be held together by the spaiui bolts. The invention therefore makes it possible to use the heat exchanger for very high pressures.

It is very advantageous here, both when soldering and when using the finished heat exchanger later, that the clamping bolts through their ftp engagement in the openings dec

altfo just transferred to where the pressure is

rad tightnesses

particularly

is.

Characterized in that the clamping bolts within the Saamelraße des Are arranged in the heat exchanger, they do not appear spatially disruptive, especially for the connection

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on draft and air ducts is particularly important.

The invention is described in the following description of an exemplary embodiment shown in the drawing Heat exchanger explained in detail.

Bs show:

Fig. 1 one in the flow direction of the second 'Fluid side view of the embodiment example}

FIG. 2 shows a section along the line XX - II of FIG. 1;

FIG. 3 shows a section along the line III - III in FIG.

The heat exchanger shown in the drawing can preferably be used as an air-cooled oil cooler where the oil is the first fluid and the air is the second fluid

_J6ilden. Jüür_das Durchströmens _des_öles ^ flat tubes 21 are provided in the illustrated embodiment, which either from levels, through closing in the Miftfrimi sheets held together or, as in the older one

-sample 7 110 667-described, is old, made of sheet metal reshaped edges are formed. In the example shown are the flat tubes made of flat sheet metal

711128828.7.71

3 J>> 3 1 3> 33 >

IJJJ I) J J))

3 3 J J 3 O 3 7

3 Y YY 1 Y) Jl 1 3 3

3 3 3 J 3> 3

3 Y Y 3 3 3 3}) 3 Y 3) 1

t *.

5 -

formed with reshaped edges, what »jeffocfc η $«? is shown in more detail. The Zwi

Flat tubes 21 are for the 1st

look ahead. These codes are & 22

surfaces 23 arranged, of which in Fig. 1 to the usual

For reasons of flexibility, only a part is shown as it is.

The flat tubes 21 are to form the Kwisohenrlt ** · 12 held at a distance from one another by spacers 24 The spacers 24 extend like the one shown in FIG. 3 can be seen roughly over the entire length of the through the Interstices 22 formed through-flow spaces for the air and thereby form the lateral tongues of these flow spaces. .In each spacer 24

is a as an elongated hole 25 aasgebildeter

see the almost "bar extends the gaase length of the holder 24th *" _ In. each of these long holes 25 engage to form plenums 26 for 01 m the facing walls dec Flachrobz · 21 drawn Bunde 27 a. By see Lang3 & ebs * 2S C extending almost over the length of the spacers 24 is reached, the snnwwlrMnme in the feelAe *

Ends of the formed over almost the entire transverse direction of the oil measured width of Flacttrcla "e * ·" for the 01 of the flat _^pipes: stretch ·

On the two ~ »3s of the through the floor 21 and the Spacers' 4 packets formed · sied under Bwisetettpn further spacer holders 28 «ad 30 each one Ms-

/ namely in the representation »* βη Fig. 1 an upper closure plate 29 uod a lower Ataonluoplatte 31, an * -

711S2SBK7.71

arranges. The upper spacers 28 are not provided with an opening corresponding to the elongated hole 25, but only with a one-sided recess 32 that covers the elongated hole 25. The lower spacers, 30 correspond exactly to the spacers 24. In the lower end plate 31, elongated holes 33 that coincide with the elongated holes in the spacers 30 are provided. An inlet - 'thaStraam 34 and an outlet space 35 close to the lower closure plate 31

for the oil, from the closing plate 31 and one Base plate / as well as from Abechlußträger 37 "are limited. In the base plate 36 threaded bores 38 and 39 are provided for the connection of inflow and outflow nozzles.

«Furthermore, the base plate 36 has -below the ends

the elongated holes 33 of the end plate 31 Gewlndesackboh -— sang 41 for clamping bolts 42, which continue through holes 43 in the upper end plate 29 through holes τ44 "itn the upper spacers 28 and by the Collars 27 encompassed collecting spaces 26 reach through. These clamping bolts are in the threaded blind bores 41 locked by lock nuts 45. On the protruding from the bores 43 of the upper end plate 29, with Gaining provided ends of the clamping bolts 42 are below Interposition of sealing rings '46 clamping screw nuts 47 screwed on. By tightening the nuts 47, this can be achieved through the flat tubes 21 and the spacers 24, 28 and 30 formed packages are held together with any desired pressure prior to soldering.

7118218217.71

Claims (2)

- 7-S chut ζ talks Heat exchangers with flat tubes arranged parallel to one another, which form flow spaces for a fluid and which to form flow spaces for a second fluid are held at a distance from each other by spacers, each of which to form collecting spaces for the first Fluid has a breakthrough in the same from both ends of the facing walls of the flat tubes raised cuffs engage «characterized by that for holding together the package composed of flat bores (21) and Ab & andhalterern (24, 28, 30) clamping bolts (42) extending through the collecting spaces (26) are provided. 2) A heat exchanger according to claim 1, characterized in that the spacers (24, 28) extend approximately over the entire length of the flow passage (22) for the second fluid, and this characterized begreif side and that the through r breaks as elongated holes (25) are formed almost all across the flow direction of the flat tubes (21) measured width of these extend, and that in each collecting space (26) at both ends two Engage the clamping bolt (42). 711821821.7.71