DE2362709A1 - PLATE HEAT EXCHANGE UNIT - Google Patents

Description

Dipl.-Sng. Bodo hi "eikl" g

Patent attorney

4800 Bielefeld 7 *? RO 7 η Ο

Elsa-Brändström-Strasse 1-3 * V O Z / U CJ

IHG. A. ΕΕΗΣΤϊΑ COS'TiiU ^ IUiMi MATALLICHE 3.PA Via Risorgiinento 13 - LSCGO - Italy

FLATi'EKWXlüdEAUSTAUSOHEIJSiHEIT

The present invention relates to heat exchangers and in particular to a plate / era exchanger unit with improved efficiency and a hot water boiler, which contains such units, in particular! of the kind

^BATH

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wherein the is a i'iilssigkeit the V / ärzne abgeDende l-edium-gaseous and that the Yiarme receiving medium.

Composite structures of Heisüwasserboilern are already known in which a variety is provided by usually made of cast iron V / ärrneaustauschreinheiten where the> ^T äraieilbertragungskoefiizient per unit area of each heat exchanger by Vorspränge in irorm of Ji'iftgeln, hip od.Höckern · the are cast on the gas inlet side of the units, has been improved.

Apart from the question of the degree of efficiency, there is a great deal. these units in the high manufacturing cost the cast bags -and ir. the through the cast Projections created security problems.

Try to get cheaper V / heat exchanger units by cold forging from suitable ones. Creating materials resulted in much slower heat exchange rates. The Y / ärmeaustauschgeschv / indigkeit such units suitable port sets can probably be improved by the following Anuringung, however, increase in one such ™ ^i: all the Produktiü2i3kosten to unreasonably high levels.

It is therefore an object of the invention to provide an improved heat exchange unit which can be used by both KaItiurmen or by Ouss either from iron, steel, Aluaiinuxi Made of copper or another suitable material can be.

Another object of the invention is to provide a heat exchanger unit from which the combustion gases

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-exposed. Surfaces cleaned more easily and thoroughly without taking apart the unit itself

A further aim of the invention is to be seen in that a high heat transfer affinity with "heat exchangers is created, the heat yield in the combustion gases without increasing the exchanger surface is increased.

These and other goals will be met with ingenuity. Plate heat exchanger unit with at least two hollow heat exchange plate elements, which are opposite one another and ^{delimit between them a V <r} eg for a heat-releasing medium, and each have interior spaces for a circulating heat-absorbing medium, which is characterized in that they are opposite one another Has surfaces of these heat exchanger plate elements, which have rib-like formations, which at least partially extend across the path mentioned and in each case protrude from the opposite surfaces in mutual regular relationship

and define a cascade-like course of at least part of the V.eges.

According to a preferred embodiment of the invention are the rib-like formations in ϊοηα of bead sections that are mutually related in one of the jilemente and at least partially related to the opposite yr uls tab sections of the other elements run obliquely, the elements interacting and

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.a way for the passage of the heat emitting Limiting the medium, the medium emitting the heat first meets the Vrul rod cuts in an element, thereby in one direction assuming a first, at least partially non-laminar flow condition is deflected, and then hits another bulge section in the other element and in another Hichtung is deflected, whereby it assumes a second, at least partially non-laminar flow state in which at least the flow effects of the stream of the Ledium partially reversed with respect to the first flow condition so that the inner turns of the flowing. Stromes are caused to laugh against the Wärcieaustauscherf rebound, which process alternates with each bead section of an element is repeated, so that the flow of hot gas is forced into a long meandering or spiral /.eg to be followed and a controlled To assume that there is too much turbulence, the purpose of which is every layer in a better v. era transmission ratio with the rides to bring unity.

The veins in the elements preferably act under Formation of a middle section in the unit mentioned together, which is able to detach one plate end determined Shape, soft, when it is inserted, with hemispherical V / ulst sections opposite sides of it cooperates to the Middle section, in two ducts for the hot U-as to subdivide, .wherein the ü-asstrom from a; corner end of the Unit flows through one of the passages and on diagonally

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, opposite .linde exits, while the gas flow from other corner end of the unit flows through the other of the passages and at the other, diagonally opposite to this Flows out at the end, here the υ-as stream is referred to as ü-teses in zv / ei flow paths divided by zigzag foria, which are roughly cross in the middle of the unit and never significantly - Mix.

Further features and advantages of the invention can be found in the following description of preferred embodiments of the invention with reference to the accompanying drawings. In the drawing shows:.
i'ig. 1 shows a '.f'emia exchanger element in elevation, with the side of the element exposed to the combustion gases with the plate screen in place being visible.

i'ig. έ in the elevation the other element, which together with the 'element according to Pig. 1 a pair that belongs together forms the heat exchanger unit;

Pig. j is a cross-section of the element along the line I-I the i'ig. 1 see in the direction of the arrows ^ but the plate cover for the sake of clarity of the illustration is removed;

Pig. 4 a look at the elements according to Pig. 1 and 2 in assembled iusxand for the purpose of forming an inventive V / ärEiausauscbsreinheit where, however, the plate cover is removed;

Pig. 5 is a perspective 'representation not partially shown

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cut parts of the arms according to the invention made of shear ■ unit, where the course of the ü-aa flow at vom Plate cover removed from the center area of the unit can be seen;

ü'ig. 6 shows a representation according to aer i'ig. 5, but with inserted Plate cover, and -Fig. 6 a partially split general view of a boiler that disengages with the air exchange unit according to the invention is.

-üie -c'ig. 1 and 2 show the side, referred to in the above as "G-side", exposed to the separation gases, of associated heat exchanger plate elements 1 and 1, the elements being essentially rectangular in shape and preferably, but not necessarily, from cold-formed metal sheet, flange-mounted peripheral sections 2 and 2a ensure a good holding surface for the assembly of the units and their installation in the boiler. ±) The openings 3 and 3a, 4 and 4a form connecting passages for the circulation of water along the The liquid side of each illegal (25 in i? 8 and 9, oa and ^ a, which form a continuous flat surface for the abutment of an element on the element that adapts to this and delimit a ^ vauLL which is open at the bottom and at the top and which, Heissgasüurchzugskamr he forms, between the side elevations and the transverse ribs are transition from. ₃ chnitxe 7a, 7 fore

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seen, which describe an approximately elliptical profile which extends from the elevations d, Öa to the elevations 9, 9a range (Fig. 4). A removable plate cover 10 lies with its bent edge 12 on the rib 6 of the element 1 and with its bent in the opposite direction Edge 11 on the rib 6a of the element 1a and preferably has a generally pentagonal shape or at least such a form that it is associated with it and in the Consequence explained function fulfilled. . iiin rod 13, which is connected to control devices (not shown), is made possible allows the operator to pull out the panel cover 10 in an upward direction.

Figure 3 is a cross-sectional view of the element according to Fig. 1 on the line I-I and leaves the .pecial shape of the plate elements and especially the transverse ones Hippen 5 and b with a substantially triangular cross-section and rounded edges

4 shows two plate elements 1 and 1a in the assembled state, the elevations 9a resting against the elevations 9 and the elevations 8a resting against the elevations 6 and in this way forming a central passage of essentially elliptical shape for the passage of the hot gases . A plate cover 10 is inserted between the rib parts of the plate elements, with only the ribs 6 and 6a being visible, aeren upper edges 11 or Yi. facilitate the exact arrangement of the plateau 10 in the middle of the passage.

7 is for the purpose of explaining an application a boiler shown in which the inventive:

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, mass heat exchanger units are installed.

The fuel arrives at a burner arrangement 16 via a control device, each of the burners being connected below the flow area of each thermal exchange unit 19. Significantly jJer Keith Alber is shown in the Brennersysteni split up Teter representation and it is apparent that the burner assembly is installed in a usual ^en furnace at the bottom of the boiler 17, welder uien is limited äurch the face plates 1NC. '^ ir.e base plate can form part of the support part 22. A chimney 2½ is arranged above the boiler 17 and is connected to a flue. By the heating system (not shown). can be circulated, for example, by means of a circulating pump 21, the suction side of which can be connected to the system via an xtohr 24 and the front side of which is connected to the bottom side in a manner known per se, with './aaser after being heated in Boiler in the system - which the pipe 2} in the upper part of the front plate re-enters the system, and the interiors of the V / heat exchanger element; , ba and 9, 9a rest against one another. The seal is achieved by welding the edges of the opening that lie against one another.

The tfärLiexauschelemente are through to each other The edges of the relevant flanges 2, 2a are welded together tied together.

The circulation of the water in the interior of the market exchange elements erfoxt in-ftbj.icher V / eise, such as through free convection or through Zv / angsumi.aaf.

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v'i'är / iieaastauscheinheit is nunc.etir under references on FIGS. 5 and b with special consideration of the G-side xier unit.

From Pig-. 5 it can be seen that when the plate diaphragm iu is inserted exactly between a pair of mutually matching elements i, la, the following flow scheme for the from α em. uien rising hot cras results. The tr: -i .., stroiu marked with the pieiliinie A meets from one. ^ cke of the unit starting first on the tilting; e 5, is at least partially deflected in a direction q.uer for the general stretching of the Ilatteneiemente and then hits aie iiippa 5a, through which it is at least partially in the direction opposite to the passing direction is distracted. Oie plate 'but is on iu aer uii-pe 5a and the otrou A is forced its way through the passage between the plate' iu and AEEU middle übergangsbaschnitt of leciente ^ 1, as shown in phantom gestej.lt αax-to ηβηπ, βη, and to exit on the opposite side after cs has hit the rib 6 and has been deflected further. In contrast to this, the., - asstrouj 13, starting from the other icke, first hits the rib 5a, is at least partially deflected in an opposite direction to that which the current A niujnt after being deflected _{by the ri 1: .pe 5} , and then meets the ΐνχρχ ^ β 5, where, since ax plate 10 and the Rij.:pe 5 are in contact, it is forced to incline its V / eg between -flatte 10 and the emitting transition section of the element 1 after which, after hitting the rib £> a and being further deflected by the same, it emerges at the opposite upper jicke.

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much. 5 shows the 7c-rl3.uf of the heisaen ύ-a.: Strokes with entiern-ter plate end iü from the middle lüpvexiteil ües plate element. .J-Ui ua.jv / irü hieoei before, his: rough upwardly directed "eg in a simple way through the junctions, together α arc u the cleared out ϊΐχρ en of the two small te, ad steered, whereby aer hot gas zag una the ..Änaeiloertragangsbedingungen, ir :. Comparison za jig. 6 are different.

Practical experiments have shown that üa - .. s r.it den erfinäungi wet wax "u: eaua;, au3chunits a, esser V. efficiency is achieved.

The above-mentioned versions meet their preferred versions and a preferred version of the configuration of the invention of the external plate / exchange unit is a burden. ei :: e oejsere .är;:. express transmission dadurca recognizes that over the striJ.iiung of the .rieiüsgases ej.:i such a course is communicated that every 3triJs ± inie in close contact r.iit α en ..and en about unity brought v / ircl, in order in this way to achieve a greater degree of dew;.: cage jchwinuigkei t onne disadvantageous formation of turbulence., which could disturb the smooth circulation of the ice gases in the economy . gev / änrbaren.

^ s is further ofzensichtlic - because ^ e was she beschreieben reference to a preferred AusfährungsbeispieiS and that numerous äuänderungen> £ Ω-α- variants are out possible without thereby ftoerschreiten the iiaiiL.en aer invention. For example, pretty much any type of fuel can be used in a boiler equipped with exchange units in addition to I.'ethane gas if the appropriate

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Adaptations are made, xiie units themselves can be provided with embossings in the area of their diameters, uii to increase the strength of the plates, especially when large plates are used.
Aue α can also be more or less modified to a greater or lesser degree, for example, by hippings with a wave-shaped or sinusoidal course instead of the straight course used in the example in question can be left and the number and formation of the ribbed sections of the elements can be used for the purpose of adapting to various requirements. can be varied or changed

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Claims (1)

Claims. π. JPlaOtenwämeaustauscheinheit iait at least two hollow. V / heat exchange plate members' facing each other and between them a way for a .. poorly releasing edium limit and each interior spaces for eii. circulating warmth possessing iuediun, characterized in that they opposite surfaces of these heat exchanger plate elements has, which have rib-like formations that are at least partially transverse to the admonished Extend away and each from the opposite faces in mutual regular relationship, / standing and being there a k-skaden-like course of at least part of the Define .veges. . 2.. Air exchange unit according to Claim 1, characterized in that that the rib-like formations are mutually arranged in a zigzag shape. 3. V.änr.eausxauscheinheit according to claim 1, characterized in that that the rib-like formations are mutually crossed. 4. V / heat exchanger unit according to claim 3, characterized in that ^{devices are provided on the:} »eg of the heat exchanger to deflect the air at least to,.: I'eii in a direction transverse to the general direction of flow through the heat exchanger unit. ... ?. ..heat exchanger unit according to claim 4, characterized in that that between the heat exchange plate elements adjustable subdivision diaphragms provided for the heating gases are to control the flow of heating gases through the heat exchanger unit in at least two separate (air streams) 409826/0820- BAD or; share, whose hations at least in a central zone of the Heat exchanger unit run obliquely against each other. 6. v / heat exchanger unit according to claims. 1, characterized in that that the V. heat exchange l'latüenelemente a rectangular "iJ'oriü with essentially parallel grass inlet and Gas outlet sides and essentially perpendicular to this Have side parts and that the rib-like formations are in an oblique direction in relation to the 'sides of the pike-corner shape and across to the inlet side extend and that the rib-like formations on a Y / heat exchange element obliquely with respect to the rib-like Formations on the opposite side aes opposite Hegendoi other v / ärmeaustauscheleinentes run, with the side parts thickened edges with stop surfaces have around the side the space between the heat exchange elements. to cover, and openings in the area of the corners of the thickened formed edges for producing a connection between the inner sides of the "iiärcieaustauscheleciente" are provided. 7. i.ärLieaustauscheinheit according to claim 6, characterized in that that more than two exchange elements in i'orm a package arranged 'and Rohrverbindun ^ eii are provided, around a continuous opening of a lateral heat exchange element with the inside of a heating system circuit and another opening of a side heat exchange element with to the outlet side of the heating system circuit, where burner facilities below the Q-ae inlet side of the unit and on the outlet side of the unit. a deduction is provided, in order to define a boiler construction in this way. 8. Heat exchange plate for a heat exchanger unit according to Claim 1, characterized by a shaped metal plate A09826 / 082 0 ßAD ORIGiNAl ait developed rib-like outward ui! fertilize and exner Paddling training on its periphery sun · Connection to a Paddling training of a complementary. V / arm replacement clip with the formation of the hollow iiäriaexauscheleiiientes. ßAÖ ORIGINAL 409826/0820