DE20017301U1 - Panel radiator and support part therefor - Google Patents

Description

Vogel & Noot Heat Technology Ltd.
in Wartberg (Austria)

Panel radiator and support part for it

The invention relates to a panel radiator according to the preamble of patent claim 1 and a support part for such a panel radiator according to the preamble of patent claim 20.

As can be seen from Fig. 1 to 3, it is known for panel radiators to be made from two half-shells welded together, with these half-shells forming a lower and an upper collecting channel and heating channels running between these collecting channels. Connecting lines or fittings are connected to these half-shells. For this purpose, corresponding connection openings are formed in the half-shells, into which, onto or around which the connecting lines or fittings are welded to one another. This welding is carried out in particular by resistance pressure welding, with the connecting pipes or fittings and the half-shells forming the panel radiator being welded to one another while simultaneously exerting pressure. In order to avoid deformation or indentation of the half-shells, a support part surrounding the connection opening is inserted between the opposing half-shells. This support part absorbs the pressure during resistance welding or counteracts deformation of the half shells and is itself welded to the inner surface of at least one of the two half shells. This prevents damage to the half shells in the area of the welded connection pipe or fitting.

As shown in Fig. 2, the heating fluid flows according to arrow 15 through the fluid connection 7 of a fitting 14 and through the connection opening 7' formed in a half-shell 2, 3 into a flow-through opening 9 of a support part 8. The flow-through opening 9 is connected to a number of outflow openings 10 which flow the supplied heating fluid out into the panel radiator 1 around the circumference of the support part 8.

As can be seen from Fig. 1, the connection openings T with the support parts 8 are advantageously located in the corners of the panel radiator 1, in particular in the end regions of the advantageously horizontally running collecting channels 4, 5. The heating fluid, which is preferably supplied via one of the upper connection openings T , flows downwards through the heating channels 6 and is discharged through a connection opening T provided in the end regions of the lower collecting channel 4 through the corresponding fitting 14. The other two connection openings or the fittings connected to them are closed off or are not released for fluid conduction. In the connection lines or

Fittings 14 are provided with corresponding control devices, e.g. valves or valve sets, as shown in Fig. 3. It can also be expedient for the heating fluid to be supplied via a connection opening 7' at the top, and for the heating fluid to be drained from the panel radiator advantageously through a lower return connection 30, which is preferably located centrally with respect to the length of the radiator and is connected to the lower collecting channel 4 in a fluid-conducting manner.

A disadvantage of these known panel radiators is that the supplied heating fluid flows into the panel radiator 1 via a number of outflow openings 10 formed in the support parts, distributed in all directions. This also causes, as can be seen in particular from Fig. 1, a considerable amount of heating fluid to flow into the laterally outermost, vertically running heating channel(s) 6; the heating channels 6 in the middle of the panel radiator, in particular those at the other end, are thus supplied with less or insufficient heating fluid or flow through them. This design of outflow openings is particularly disadvantageous when integrated valve fittings are provided or the flow and return of a radiator are arranged on the same side, as shown in Fig. 3. In this case, the flow through the vertical heating channels, which are located on the opposite side of the panel radiator with respect to the valve fitting, is insufficient.

The currently used connection method is also disadvantageous if the radiators are connected on the top on the flow side and on the bottom on the return side on the same side, even if this type of connection has advantages in terms of installation technology and corresponds to the usual type of connection for standard performance measurement. It was found that, depending on the fluid flow rate, a short circuit occurred in the fluid flow through the first heating channels 6 close to the fluid feed, which meant that the temperature distribution in the panel radiator was no longer uniform and the return temperature was increased, which reduced the radiator performance.

The aim of the invention is now to prevent a reduction in the radiator output in panel radiators of the type mentioned at the beginning, in particular in panel radiators in which the flow line is designed or arranged at the top and the return line in particular in the middle at the bottom or on the same side or in the same edge region of the panel radiator as the flow line.

According to the invention, a panel radiator of the type mentioned at the outset is characterized by the features stated in the characterizing part of claim 1. A support part of the type mentioned at the outset with which the inventive objectives can be achieved is characterized by the features of the characterizing part of patent claim 20.

The procedure according to the invention results in a very good temperature stratification in the panel radiator or within a radiator panel formed by the two half shells. The procedure according to the invention is suitable for

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single-layer radiators and also for radiators with any number of parallel arranged radiator panels, i.e. for any multi-layer radiators.

In the known support parts used according to Fig. 1 to 3, the heating fluid flows approximately evenly in all directions from the support part into the radiator due to the particularly even distribution of the outflow openings around the entire circumference. A short circuit between the flow at the top and the return at the bottom on the same side cannot be avoided, as can be seen in particular from Fig. 1 and 3. According to the invention, it is now provided that the supplied fluid flows or is supplied in the longitudinal direction of the radiator or in the longitudinal direction of the collecting channel in which the respective support part is arranged using the outflow opening(s) arranged in the respective support part, the number of which can be varied. The outflow opening(s) formed in the support parts point towards the center of the radiator and all vertical heating channels are supplied with heating fluid in an essentially equal manner, thus achieving an even temperature distribution with high heating output. Advantageously, support parts according to the invention are attached in all four corners of the panel radiator, so that the radiator can be connected both at the top right and/or bottom and at the top left and/or bottom. This measure is of course accompanied by the corresponding welding of connecting lines, T-pieces or fittings in the area of the connection openings.

Preferred embodiments of the invention can be taken from the following description, the patent claims and the drawing.

Fig. 1 to 3 show, as already mentioned, panel radiators with support parts in schematic sections, which belong to the state of the art.

Fig. 4 to 6 show embodiments of panel radiators according to the invention.

Fig. 7 to 14 show special embodiments of support parts in schematic sections.

Fig. 15 and 16 show schematic representations of support parts.

Fig. 4 shows a schematic view of a panel radiator 1 according to the invention in section or a view of the inner surface of one of the two half-shells 2, 3 forming the panel radiator 1. In order to ensure a variety of connections, connection openings T are formed in all four corner areas of the half-shell 2, each of which is surrounded by a circular ring-shaped support part 8. The circular ring-shaped support part 8 has in its central area a through-flow opening or through-flow space 9 which is adapted to the connection opening T or surrounds it and which runs or is aligned essentially perpendicular to the half-shells 2, 3. This through-flow opening 9 is followed by two out-flow openings 10 which are formed in the peripheral area U of the support part 8, which points in the longitudinal direction of the respective collecting channel 4 or 5 in the direction of the center of the radiator. Between the two out-flow openings 10 is a separating area 18.

The outflow openings 10 can be formed, for example, by bores or by recesses made during the manufacture of the support parts 8.

The support part 8 is placed on the half shell 2 in the area of the connection opening 7'. The half shell 2, the support part 8 and the further half shell 3 as well as the fitting 14 are then welded together.

The support part 8 according to Fig. 5a comprises a rectangular or square base plate 13, from which wall parts 12 extend on three sides. The support part 8 is placed with the base plate 13 on the half shell 2. The further half shell placed on the support part 8 limits the flow opening or the flow space 9 of the support part 8 or closes the open side, so that fluid supplied through the flow opening 9 can exit through the outflow opening 10 into the horizontally running collecting channels 4, 5 according to Fig. 5. The embodiment according to Fig. 5a represents an embodiment of a support part 8 that can be attached particularly well in the area of the connection opening T. In particular, such a support part 8 could be temporarily or permanently welded to one of the half shells before the two half shells 2, 3 forming the panel radiator are welded together.

The support parts shown in Fig. 6 each have a single outflow opening 10, which discharges the supplied heating fluid essentially in the longitudinal direction of the collecting channels 4, 5.

It is essential that the main flow direction of the heating fluid emerging from the support part 8 is directed in the longitudinal direction of the collecting channels 4, 5; any lateral flow components or flow components occurring at an angle thereto do not play a particular role; however, it should be strictly avoided that a significant outflow occurs directly upwards or downwards or in the direction of the near side edge 11.

Advantageously, it can be provided that the outflow opening(s) 10 in the support part 8 extend(s) over a maximum circumferential area U or angle range of 180°, preferably of a maximum of 100°, in particular of a maximum of 70°. An angle range of 180° is present, for example, when a semicircular ring-shaped support part is provided. However, this is the extreme case; advantageously, the outflow angle or the angle over which one or more outflow openings extend over the circumference of the support part is selected to be smaller; in particular, an angle of less than 100°, e.g. of a maximum of 90°, is aimed for.

The support parts 8 used can have one or more outflow openings 10; it is advantageously provided that the support part 8 and/or the outflow opening(s) 10 have a plane of symmetry S that is perpendicular to the half-shells 2, 3 and runs parallel to the collecting channel 4, 5. Optimum results are achieved if the outflow direction A of the fluid as it exits the

Ejection port 10 runs parallel to collecting duct 4, 5.
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The peripheral shape or the shape of the wall parts of the support parts 8 that surround or delimit the flow opening or the flow space 9 can be varied. The support part 8 can have the shape of any polygon in cross section, with at least one outflow opening 10 being formed in at least one side surface of the polygon, in particular a square, or at least one side surface of the polygon being cut out or recessed and thus defining the outflow opening 10. In this context, reference is also made to the exemplary embodiments of support parts 8 shown in Fig. 15 and 16. It can advantageously be provided that the support parts 8 have the shape of hexagonal, octagonal or oval prisms with or without cover surface(s), with one or a plurality of outflow openings 10 being formed over the specific maximum peripheral section U. Even in such embodiments, it is essential that the outflow opening or the outflow openings 10 have a maximum extension of 180 angular degrees over the circumference of the support part 8 and that the main outflow direction of the support part 8 is in the longitudinal direction of the collecting channel 4,5.

In principle, the support parts 8 have the shape of circular or polygonal rings (e.g. Fig. 7) or partial rings (e.g. Fig. 6, 15, 16) without a bottom and top surface; in this case, the through-flow opening 9 is formed by the interior of the ring or partial ring and the outflow openings 10 are created by corresponding recesses formed in the wall surfaces or by omitting individual wall surfaces.

It has been shown that it is advantageous if support parts 8 are arranged in the lower and/or upper lateral end areas of the panel radiator 1, in particular the lower and/or upper collecting duct 4, 5. In this way, it is possible to connect corresponding connecting lines, fittings 14 or the like either on the left or right or either on the top left and bottom right or on the bottom left and top right and to design the flow through the panel radiator 1 as desired without reducing the heating output due to short circuits in the vertical heating ducts 6. The flow is advantageously connected to a connection opening 7' at the top and the return is connected to the return connection 30 located in the middle at the bottom.

It is advantageous if the support parts 8 are circular and have a cylindrical flow opening 9, from whose central axis the outflow opening 10 branches off or connects radially outwards, or if several outflow openings 10 are formed in the support part 8 symmetrically to a plane of symmetry S running horizontally and perpendicular to the half-shells.

Best results are achieved when the outflow opening(s) 10 extend over a circumferential area U of the support part 8, such that the outflowed fluid in the

essentially entirely in the longitudinal direction of the respective collecting channel 4, 5.

A special embodiment of a support part is shown in Fig. 8; it is provided that the through-flow opening 9 in the support part 8 runs from one side of the support part 8 into its interior and ends in front of a cover or wall surface 24 in the interior of the support part 8. The out-flow opening 10 is perpendicular to the through-flow opening 9.

A simple embodiment of such support parts 8 consists in producing a corresponding ring-shaped, i.e. circular or polygonal ring-shaped structure by punching, bending or pressing, which has the through-flow opening 9 over its height and in either omitting a wall area during the formation of this ring-shaped structure or in forming corresponding out-flow openings 10 in the wall surfaces of the ring-shaped structure by appropriate mechanical processing or shaping during production. The through-flow opening 9 is expediently enclosed or defined by the interior of the individual inner wall surfaces or by a support part 8 which may have a cylindrical or elliptical inner surface; this peripheral wall surface(s) can be covered with one or two cover surfaces, with corresponding through-flow openings 9 being formed in one or both cover surfaces, which open up the through-flow space 10 and release this space for fluid flow. The out-flow openings 10, which are provided in the appropriate number and angular extent, open into this space.

In order to arrange the support parts 8 in the correct position in the half-shells 2, 3 before the welding process, in particular the resistance pressure welding process, in a flow-correct manner, markings are formed on the support parts 8 with which the orientation of the support parts can be recognized when they are fed to the half-shells 2, 3 before the welding-pressing process. According to the invention, the support part 8 has recesses, indentations, bevels, steps, notches or a design deviating from the surface continuity on its cover and/or peripheral surface, with which the support part 8 can be oriented in the correct position during its assembly or insertion between the half-shells 2, 3 and can then be fastened in a predetermined orientation to at least one of the two half-shells 2, 3, e.g. by pressing, welding, in particular resistance pressure welding. The connection opening(s) 10 can also be used to determine the orientation of a support part 8.

Fig. 9, 9a and 9b show schematic views of support parts 8 in which a notch 24 running over a side surface is provided.

According to the support parts 8 shown in schematic views in Fig. 10 and 10a, the end region of a support part 8, in particular in the area adjacent to the outflow openings 10

opposite side, level 19.
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In Fig. 11 and 11a an embodiment of a support part 8 is shown on which a bevel 20 is formed.

Fig. 12 shows an embodiment of a support part which has a flattening 21 in a peripheral region.

Fig. 13 shows a support part 8 which has a notch 22 which runs in particular parallel to the flow opening 9.

Fig. 14 and 14a show a support part 8 which has a notch 23 over its peripheral surface over a certain peripheral area.

A variety of such possibilities for marking support parts 8 are possible in order to detect their position and to be able to detect or align the support parts 8 in order to be able to place them in the correct position in the area of the connection openings T.

The material of the support parts 8 is selected depending on the pressing pressure to be applied or the existing resistance of the half shells to deformation. The size of the outflow openings 10 depends on the desired fluid throughput.

The material used for the support parts 8 is iron, sheet metal, stainless steel, sintered metals, aluminum or aluminum alloys or the material from which the panel radiators 1 themselves are made. The flow opening 9 and the outflow opening(s) 10 can be formed in the molded parts made of sintered metal during the manufacturing or sintering process.

In Fig. 6, in addition to the outflow opening(s) 10, a further outflow opening 10' is shown on the right lower support part 8, which, however, does not point in the main outflow direction A or into the collecting channel 4. This additional outflow opening 10' flows heating fluid in a direction A' into the outermost heating channel 6 in order to ensure sufficient flow therein. The amount M of heating fluid that flows out through this outflow opening 10' is, for a number η of heating channels,

F2F2F3F

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where F is the amount of heating fluid released through the outlet opening(s) 10. In addition to the procedure according to the invention, it is thus possible to additionally ensure that the heating channel located at the edge of the radiator panel flows through it.

It is possible to provide this additional outlet opening 10' in each support part of a heating panel.

Fig. 7 and 7a show an embodiment of a support part 8, in which it is provided that the outflow openings 10 have a cross-sectional shape that starts from a circle adjoining the throughflow opening 9, which widens outwards to form an ellipse, where _appropriate , also the axis of the

circle and the corresponding axis of the ellipse are of equal size, but the long axis of the ellipse, which is perpendicular to the flow opening, is approximately twice the length of the circle diameter.

The correct insertion of the support parts 8, i.e. the alignment of the outflow opening 10 in the correct direction, is relatively simple with the box-like support parts 8 shown in Fig. 5 and 5a, since due to their rectangular or square shape they can be fitted correctly into the recessed collecting channel 4 or 5 and it only has to be ensured that they are on the correct side before being inserted into the collecting channel or that the throughflow opening 9 is aligned accordingly with the connection opening 7'.

The inner wall surface(s) of the support part 8 can also be at a distance from the circumference of the connection opening T.

The connection of the panel radiator 1 or the fluid flow through it is not important for the invention; what is important is that fluid flowing into the panel radiator 1 or into a panel plate is fed via the support parts 8 in the manner according to the invention, i.e. in the direction of the radiator center.

The support part 8 is a relatively flat component, the height or thickness of which essentially corresponds to the distance between the inner wall surfaces of the heating panel or panel radiator 1 formed by the two half-shells 2, 3.

The half shells 2, 3 forming the panel radiator 1 are connected or welded on all sides along the peripheral edges 11.

Instead of circular support parts, oval or elliptical support parts can also be provided.

Claims (25)

1. Panel radiator ( 1 ) comprising two half-shells ( 2 , 3 ) welded together, which form a lower and an upper collecting channel ( 4 , 5 ) and heating channels ( 6 ) running between these, in particular horizontal collecting channels ( 4 , 5 ),
wherein a support part (8) is arranged between the opposing half-shells ( 2 , 3 ) in the region of a fluid connection ( 7 ) of a connecting line of a fitting, a T-piece ( 14 ) or the like, which opens into the respective collecting channel (4, 5 ), in particular at least partially surrounding the connection opening ( 7 ') provided in the half-shell ( 2 , 3 ),
wherein the support part ( 8 ), which preferably has parallel and flat end surfaces, has a preferably central inlet or throughflow opening or throughflow space ( 9 ) which runs in particular perpendicular to the half-shells ( 2 , 3 ) and adjoins the fluid connection ( 7 ) of a fitting ( 14 ) or the connection opening ( 7 ') of a half-shell ( 2 , 3 ), and
wherein in the peripheral region of the support part ( 8 ) at least one outflow opening ( 10 ) is formed, which communicates with the through-flow opening or the through-flow space ( 9 ) or is connected in a fluid-conducting manner and runs radially or transversely, in particular parallel to the half-shells ( 2 , 3 ), aligned therewith, characterized in that the outflow opening(s) ( 10 ) is (are) formed almost exclusively or exclusively in or over the peripheral region (U) of the support part ( 8 ) which is directed away from the side edges ( 11 ) of the panel radiator ( 1 ) or which points in the direction of the interior of the panel radiator ( 1 ), in particular in a direction parallel to the longitudinal extension of a collecting channel ( 4 , 5 ). 2. Panel radiator according to claim 1, characterized in that the or almost all or all of the outflow opening(s) ( 10 ) in the support part ( 8 ) extend(s) over a maximum circumferential or angular range (U) of 180°, preferably of a maximum of 100°, in particular of a maximum of 70°. 3. Panel radiator according to claim 1 or 2, characterized in that the support part ( 8 ) and/or the outflow opening(s) ( 10 ) are formed symmetrically to a plane of symmetry (S) which is perpendicular to the half-shells ( 2 , 3 ) and runs parallel to the collecting channel ( 4 , 5 ). 4. Panel radiator according to one of claims 1 to 3, characterized in that the outflow direction (A) of the fluid as it exits the outflow opening ( 10 ) runs parallel to the collecting channel ( 4 , 5 ). 5. Panel radiator according to one of claims 1 to 4, characterized in that the support part ( 8 ) is a circular ring which has at least one outflow opening ( 10 ) only in or over a circumferential region which is smaller than half the total circumference. 6. Panel radiator according to one of claims 1 to 5, characterized in that the support part ( 8 ) is ring-shaped and in a section in a plane parallel to the half-shells ( 2 , 3 ) has the cross-section of a polygon, preferably a square or rectangle, wherein at least one outflow opening ( 10 ) is formed in at least one side surface of the polygon or at least one side surface of the polygon is cut out or saved and the outflow opening ( 10 ) is thus defined. ( Fig. 5, 15, 16) 7. Panel radiator according to one of claims 1 to 6, characterized in that the support part ( 8 ) has a C-, V- or U-shaped cross-section in a plane parallel to the half-shells ( 2 , 3 ) and the outflow opening ( 10 ) is delimited by the two legs ( 12 ) of the C, V or U or lies between them or is optionally surrounded by them at a distance. 8. Panel radiator according to one of claims 1 to 7, characterized in that support parts ( 8 ) are arranged in at least one of the two lower and/or upper lateral end regions of the panel radiator ( 1 ), in particular lateral end regions of the lower and/or upper collecting duct ( 4 , 5 ). 9. Panel radiator according to one of claims 1 to 8, characterized in that the outflow openings ( 10 ) of support parts ( 8 ) arranged in the same collecting channel ( 4 , 5 ), in particular in its end regions, face each other. 10. Panel radiator according to one of claims 1 to 9, characterized in that a plurality of outflow openings (10) delimited from one another by intermediate webs or intermediate regions ( 18 ) are formed in the peripheral region (U) of the support part ( 8 ) provided for the outflow opening( s ). 11. Panel radiator according to one of claims 1 to 10, characterized in that in at least one lateral end region of the panel radiator ( 1 ) the support parts ( 8 ) are arranged vertically one above the other in the respective upper and lower collecting channels ( 4 , 5 ). 12. Panel radiator according to one of claims 1 to 11, characterized in that the support parts ( 8 ) are circular and have a central cylindrical flow opening ( 9 ) from which the outflow opening ( 10 ) extends radially outwards. ( Fig. 6, 7) 13. Panel radiator according to one of claims 1 to 12, characterized in that the support ( 8 ) has a U-shaped body formed by side wall surfaces ( 12 ) which is closed on one side by a base surface ( 13 ) in which the flow opening ( 9 ) leading to the flow space is formed. ( Fig. 5a) 14. Panel radiator according to one of claims 1 to 13, characterized in that the outflow opening(s) ( 10 ) is (are) arranged over a peripheral region (U) of the support part ( 8 ) such that the outflowing fluid is mostly, preferably exclusively, discharged in the longitudinal direction of the respective collecting channel ( 4 , 5 ). 15. Panel radiator according to one of claims 1 to 14, characterized in that the outflow opening(s) ( 10 ) has(have) a cross-sectional shape which increases from the inside to the outside or preferably starts from a circle adjoining the throughflow opening ( 9 ) which expands outwards to form an ellipse, where appropriate the axis of the circle which is parallel to the throughflow opening and the corresponding axis of the ellipse are of the same size and the long axis of the ellipse which is perpendicular to the throughflow opening has approximately twice the length of the circle diameter. ( Fig. 7) 16. Panel radiator according to one of claims 1 to 15, characterized in that the support part ( 8 ) is formed by a component with a circular or polygonal cross-section, over the circumference of which a circumferential region (U) of a maximum of 180°, preferably 90°, in particular 70°, is cut out or recessed or is formed or provided with outflow openings ( 10 ), wherein the support part ( 8 ) has a preferably central inlet or throughflow opening ( 9 ) and is connected on one or both sides in a largely fluid-tight, in particular completely fluid-tight, manner to the respective half-shell(s) ( 2 , 3 ), e.g. by pressing, welding, preferably resistance pressure welding. 17. Panel radiator according to one of claims 1 to 16, characterized in that a part of the wall surface(s) of the support part ( 8 ) delimiting the outflow opening ( 10 ) is formed by the wall of the respective half-shell ( 2 , 3 ). ( Fig. 5a, 15, 16) 18. Panel radiator according to one of claims 1 to 17, characterized in that the flow opening ( 9 ) in the support part ( 8 ) extends from one side or side surface of the support part ( 8 ) into its interior and ends in front of a wall surface in the interior of the support part ( 8 ). ( Fig. 8) 19. Panel radiator according to one of claims 1 to 18, characterized in that in the region of the connection opening ( 7 ') or the support part ( 8 ) to the respective half-shell ( 2 , 3 ) fluid connection pipes or fittings ( 14 ), T-pieces, connection pieces of valve sets, connection lines or the like are connected, preferably welded, in particular welded by resistance pressure welding. 20. Support part for a panel radiator, in particular according to one of claims 1 to 19, characterized in that the support part ( 8 ) has a preferably central flow opening ( 9 ) or a flow space which at least partially penetrates the support part ( 8 ) and that in the peripheral region (U) of the support part ( 8 ), communicating with the flow opening or the flow space ( 9 ), at least one outflow opening ( 10 ) is formed which extends only over a peripheral region of a maximum of 180°, preferably of a maximum of 100°, in particular a maximum of 70°. 21. Support part according to claim 20, characterized in that the outflow opening ( 9 ) and/or the throughflow opening ( 10 ) of the support part ( 8 ) is limited or closed on at least one side by a cover or end wall surface. 22. Support part according to claim 20 or 21, characterized in that the support part ( 8 ) is a circular ring which has at least one outflow opening ( 10 ) only in or over a circumferential region which is smaller than half the total circumference, or that the support part ( 8 ) is ring-shaped and in a section in a plane parallel to the half-shells ( 2 , 3 ) has the cross section of a polygon, preferably a square or rectangle, wherein at least one outflow opening ( 10 ) is formed in at least one side surface of the polygon or at least one side surface of the polygon is cut out or saved and the outflow opening ( 10 ) is thus defined. 23. Support part according to one of claims 20 to 22, characterized in that the support part has on its surface, i.e. on its cover surface(s) and/or peripheral surface, recesses, indentations, bevels, steps, notches or a design deviating from a flat or continuously curved shape, with which the support part ( 8 ) can be oriented in the correct position during its introduction between the half-shells ( 2 , 3 ) or for assembly thereon and can be fastened in a predetermined orientation to at least one of the two half-shells ( 2 , 3 ), e.g. by pressing or welding, in particular resistance pressure welding. 24. Support part according to one of claims 20 to 23, characterized in that in the support part ( 8 ) in addition to the outflow opening(s) ( 10 ) extending over a circumferential area of a maximum of 180°, an additional outflow opening ( 10 ') located outside this area is formed. 25. Support part according to one of claims 20 to 24, characterized in that it has at least one of the features recited in claims 1 to 19.