DE1943850U - PIPE PARKET FOR THE REFRIGERATION OF THE COOLING AREA OF TUNNEL OVEN - Google Patents

Description

PETOK GmbH., Ghur / Switzerland, Bahnhofstrasse 6

"Cooling device for the cooling zone of tunnel kilns"

The innovation relates to tunnel kilns and is aimed in particular on a cooling device for the cooling zone of tunnel ovens, essentially consisting of a number of horizontal, Above the stack of goods, partly next to one another, partly one on top of the other, pipes carrying coolant.

About the cooling process of the kiln fired in a tunnel kiln After passing through the firing zone, adjust the goods in the subsequent cooling zone exactly to the properties of the goods to be fired and to be able to regulate precisely with changing cooling conditions, cooling registers consisting of metallic tubes have already been used, which are located above the goods to be cooled in the tunnel furnace

Bank account: Dresdner Bank AG Herne 2436 · Postal checking account: Dortmund 558 68 · Telegram address: Bahrpatente Hernewestfalen / Babetzpat Munich

channel are arranged. These metallic tubes are made of a coolant, for example water, flows through it.

It is also already known to regulate the cooling effect of the Register by arranging the slide valve below the cooling register between this and the material to be cooled the heat exchange between the cooling register and the one passing through the cooling zone due to radiation Shield the material to be fired more or less strongly.

Is it known _? that the heat exchange by radiation in these registers is also superimposed by a heat exchange by convection.

The "heat exchange through radiation inevitably takes place in a special way intensively with the upper part of the kiln-distilled material, The normal heat exchange through convection is superimposed on this heat exchange through radiation. So there is a different cooling of the 3renngood to be cooled, what can have harmful effects on this.

The! Inflation wants to avoid these harmful effects and therefore suggests in a cooling device for the cooling zone of tunnel kilns, essentially consisting of a number of horizontal, Above the stack of goods, some of them next to each other,

other-5 partly superimposed, leading to coolant Pipes, before that the arrangement of the pipes is such that the sum of the surfaces of all pipes is at least is eight times as great as the sum of the horizontal proSections of the pipes under direct irradiation from the G-utes.

In the case of the cooling device according to the invention, the heat transfer between the mandrel to be cooled 3 renn well and the Tlühlregister by convection is often greater than the Y / heat transfer by pure radiation. It is assumed that the heat exchange through radiation depends on the projection of the individual register tubes onto the surface of the goods to be cooled.

In a relatively small-ri surface make:.: E of the register tubes namely Wirbeierscheidungen occur in represents Cfenatmosphäre, causing a corresponding cooling effect of having eil only in the upper I ¹ to be cooled combustion material result while at α at the renewal according to the selected ratio öumme, between the Surface of all tubes and the sum of the horizontal pro sections of the tubes placed under direct irradiation from aes good surprisingly a thorough cooling down to the lower part of the trim is possible.

IDas it with the different to be cooled. Firing material is not always possible to fix or determine this "ratio from the start, this is done in a more expensive way! The cooling device is set up in such a way that stacked tube groups are formed, with each tube group being arranged according to the basic principle of the innovation and between the groups control slide for i ¹ SEPARATION the groups from one another are provided.

In this way it is possible without influencing the Y / poor exchange by radiation to change the convection effect within wide limits. The drawings show is ± n

Fig. 1 a section through a equipped with a slide Cooling register of a well-known tunnel oven,

Fig. 2 shows a cooling register designed according to the innovation and in

FIG. 3 shows a modified embodiment of one according to FIG Innovation of the trained cooling register.

In Fig. 1 you can see at 1 and 2 the ¹ Jande of a shaft for receiving the tubes 3 of a cooling register. At 4, a slide is indicated, which allows the tubes 3 to be covered more or less. In the case of the new execution

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In the form of such a cooling register, which is also housed in the shaft delimited by the walls 1, 2, the sum of the surfaces of all tubes 3 'is more than eight times the projection of all tubes 3' on a horizontal plane. In the exemplary embodiment shown, the tubes all have the same diameter. This results in a value of 7 as the projection surface with any tube length 1 that is the same for all tubes. d. 1. The total surface area of these existing tubes is 18 .Tf. d. 1. The ratio between the two areas is therefore above the required value of 8.

In Fig. 3, a further modified Ausführungsfor egg of a cooling register according to the innovation is shown. Hit 1, 2 again shows the boundary walls of the shaft that holds the cooling register. In the illustrated embodiment, three registers 5, 6, 7 of the same design are arranged. The individual registers 5, 6, 7 can be separated from the items to be fired, at least partially and at will, by means of slides 8, 9 and by means of a slider 10.

So one can get the ratio of those defined above Change the area as required from every larger value up to approximately the value 8.

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Of course, innovation is not limited to the illustrated embodiments but Iiann are / changed else in every _s the person skilled in the nearby V.

Protection claims;

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Claims (1)

RA.315 496 * 6/16/66 Έ 21 828 / 8Oc Gbm A 12 980 Β / Ρ I1ETOK GmbH. June 16, 1966 New claims for protection 1. Pipe package for the cooling of the cooling units from Tunnel furnace, characterized in that the arrangement of the tubes is such that the sum of the surfaces of all tubes is at least 8 χ is as large as the sum of the horizontal projections the pipes down. 2, pipe package according to claim 1, characterized in that pipe groups lying one above the other are formed, each pipe group is arranged according to claim and control slide valve between the groups to separate the groups from each other. KlESV »! F: C ¹ V" ""'srhrp Waf.- ¹ - · ■ $ ■ ·> ** · _t .- ^JP - ^L ■' ·? - ■ -O i: ^{1 J} => :. ' '■ · «■', -. ■." ■ eicM; - ■ ?. r: .k'nl vcn the word · sums up; ;, ·;. ':> ■ * ι · *; "..» »ι; - * · '! - ν *, ij -.' Wio ■ ι ,. .., 1 * 'ι * · .Ιιί'» οί »· ' . · ■) '"' ·. ·· '■; ; '. - A · ,. · .- · ■ t .. ·· ■ -: ii> f >> chi checked The «· * '· Λ /. - t. ", ■ ■" »f! ■> ■■ - ■ · .. · ι,; · η si>.>. λ ceil .1 ".S ₁ ^- IK- '. iö Mil / IJi ¹ I iBci.riit ohr.« Nochwels be a rechiüuhen tm. * · -.I _a II.- .. t. · ^"1 ^ i t.iigtibtiheri. At the request thereof also Fofokopien or film negatives are delivered at the regular rates. German patent office, Gebrauchsmustgrstslla,