CH720433A2 - Heat exchanger and process for its manufacture - Google Patents

Abstract

The invention relates to a heat exchanger, in particular for air conditioning rooms, comprising a pipe system, in particular a meander pipe, for conducting a medium, wherein the pipe system is fixed to a support plate (13) or to fins of the heat exchanger by means of a heat conducting plate (19), and wherein the heat exchanger has at least one air guide tube (15), in particular arranged between parallel pipe sections (18), characterized in that the air guide tube (15) is provided by the heat conducting plate (19).

Description

[0001] The invention relates to heat exchangers, in particular surface heat exchangers, preferably for air conditioning rooms.

[0002] Such heat exchangers are well known from the prior art and typically have at least one pipe system which conducts a heated or cooled medium along a carrier plate (or, in alternative embodiments, along fins). The pipe system is usually fixed to the carrier plate/fin in its straight areas with the aid of at least one strip-like heat conducting plate which spans (or reaches under) the pipe system.

[0003] Heat exchangers of the generic type according to the present invention have air guide tubes which enable a targeted guidance of supplied air above the carrier plate/fins, whereby these air guide tubes are typically not visible to an observer located in the room to be air-conditioned.

[0004] Fig. 1 shows an exemplary heat exchanger 1 of the prior art, which is a plate heat exchanger or a so-called "sail". A cassette 2 is provided, the underside of which provides the carrier plate 3 for a pipe system 4. The pipe system 4 is arranged on the carrier plate 3 via heat conducting plates which are not (or hardly) visible in Fig. 1 and which in this case are located under the pipe.

[0005] The embodiment of the prior art shows two air guide tubes 5, which are supplied with air via a common distributor element 6 (or induction element) (which can be fed to the distributor 6, for example, via a hose 7 indicated only by dashed lines).

[0006] The air guide tubes 5 can guide the supplied air in their interior and, with respect to Fig. 1, discharge it downwards - via recesses in the carrier plate 3 which are concealed in Fig. 1 and thus not visible.

[0007] Ventilation above the carrier plate 3 is provided in particular by air outlets 8 in the distributor element 6, which can provide basic ventilation of the pipe system 4, but this has not proven to be ideal, in particular since the ventilation effect decreases with increasing axial distance from the distributor element 6, and ventilation shadows 9 also arise in the area of the distributor element 6 (for example below the outlets 8).

[0008] A heat exchanger 1 of the prior art shown in Fig. 1 thus functions in principle, but is relatively complicated to manufacture and can be improved in its ventilation properties.

[0009] The object of the present invention is therefore essentially to provide a simpler heat exchanger which is more optimized with regard to its air conduction properties.

[0010] The invention solves the problem with the features of claim 1 and is therefore particularly characterized in that the air guide tube is provided by the heat conducting plate.

[0011] In other words, the invention consists in the fact that the air guide tube is - at least partially - integrated into the heat conducting plate.

[0012] The air guide tube (or at least parts of the air guide tube) and the heat conducting plate, which is used for the thermal activation of a pipe section, are thus formed from one piece (in a material-locking manner).

[0013] For this purpose, the heat conducting plate can have a contact area with the pipe section of the pipe system and an air guide tube area. These can in particular be arranged in parallel and/or both can be axially aligned.

[0014] The heat conducting sheet preferably consists of a uniform, material-bonded sheet (strip), which at least partially forms the air guide tube.

[0015] In the sense of the invention, the air guide tube can be formed entirely by the heat conducting plate or at least partially or in sections. Partially or in sections means in this sense that the air guide tube can be formed, for example, by the heat conducting plate together with another element which covers certain areas, for example a (lower) side of the air guide tube.

[0016] In this sense, the air guide tube can therefore be completely enclosed by the heat conducting plate or partially or on several sides and a further side or a further section can be formed, for example, by the carrier plate or a lamella of the heat exchanger. In other words, the carrier plate or the lamella can close off the air guide tube.

[0017] In this sense, the cross-section of the heat conducting plate in the area of the air guide tube can be rectangular (if the air guide tube is completely formed by the heat conducting plate) or U-shaped (if the air guide tube is partially formed by the heat conducting plate). In the latter case, the open area of the "U" shape is then preferably closed or closed by the carrier plate or the lamella.

[0018] In the sense of the invention, the air guide tube is therefore in particular a circumferentially closed tube. This can mean that the tube (in contrast to a duct) is closed on all sides and, for example, is not open at the top (air outlets in the form of holes can of course still be provided in the air guide tube, whereby the tube can still be described as circumferentially closed, since in this case it is only a matter of the basic presence of circumferential walls).

[0019] The air guide tube in the sense of the present invention does not have to be (but can be) round in cross-section. It can alternatively have a rectangular cross-section or any other suitable shape.

[0020] The air guide tube typically extends in the axial direction, i.e. in the longitudinal direction, of the heat exchanger by a multiple of its width or lateral extension.

[0021] In particular, the air guide tube extends in the axial direction over at least 20% of the length of the heat exchanger, more preferably over at least 50%, more preferably over at least 75% of the length of the heat exchanger.

[0022] As mentioned above, it is a closed tube in the sense that the air is guided in a shaft-like manner, in particular on the upper side of the carrier plate (or above the slats).

[0023] In the sense of the invention, the air guide tube can also be designated, for example, as a closed air guide channel or air guide shaft or the like.

[0024] The heat conducting plate is typically made of stainless steel, copper or aluminum or another suitable material and/or has a material thickness of less than 3 mm (is designed as a thin sheet) or has a material thickness of between 3 mm and 4.75 mm (medium sheet) or even more than 4.75 mm (heavy sheet).

[0025] It serves to “activate” the pipe system.

[0026] For this purpose, it can typically span sections of the pipe system, in particular straight (preferably parallel) sections of the pipe system.

[0027] In order to overlap the pipe section, the heat conducting plate can, for example, have an (embossed) bead.

[0028] In other cases, however, the heat conducting plate can simply be placed underneath the pipe and the pipe is attached to the heat conducting plate (e.g. welded), which in turn rests against the carrier plate or lamella.

[0029] In the most typical case, however, the pipe section is sandwiched and/or pressed between the heat conducting plate and the carrier plate (or lamella) (in particular, it lies in a bead of the heat conducting plate).

[0030] Preferably, the heat conducting plate is strip-shaped.

[0031] In this sense, the heat conducting plate can preferably have at least two sections arranged next to one another in the axial direction, namely a tube contact section and an air guide tube section.

[0032] In the most preferred embodiment of the invention, the heat conducting plate has exactly one pipe contact section and (exactly) one air guide tube section.

[0033] In alternative embodiments, a heat conducting plate can also form (or co-form) several air guide tubes and/or several tube contact sections.

[0034] The heat conducting plate typically lies flat on the carrier plate or lamella, at least in the areas surrounding the pipe section.

[0035] The heat conducting plate is typically attached to the carrier plate or lamella, for example glued or, which is more environmentally friendly, attached to the carrier plate (or lamella) with the aid of magnets. Alternatively, a form-fitting attachment (which can be separated without tools) can also be carried out, for example with the aid of tabs and/or mounts on the heat conducting plate and/or carrier plate or lamella.

[0036] Preferably, the heat exchanger has more than one air guide tube. These can each be provided by a separate heat conducting plate (or by a common heat conducting plate).

[0037] The air guide tubes can be arranged in particular between two (parallel) pipe sections. The plurality of air guide tubes can in particular be arranged in parallel.

[0038] Preferably, several air guide tubes, in particular all air guide tubes of a heat exchanger, are assigned to a common distributor, which can also be referred to as an induction attachment.

[0039] The air guide tubes can in particular be arranged in such a way that they can also guide air through openings underneath the carrier plate or slat.

[0040] If the heat conducting plate completely forms the air guide tube, the bottom region of the air guide tube, which rests on the carrier plate or lamella, can have holes which are in particular aligned congruently with holes in the carrier plate or lamella.

[0041] The pipe system is typically a pipe or pipe system made of copper or another suitable metal (although pipes made of other materials are not per se excluded from the invention).

[0042] The pipe system typically has several pipe sections arranged in parallel. It is designed in particular as a pipe meander (but could in principle also have a harp shape or something similar).

[0043] The pipe system can be designed in one piece or in several pieces.

[0044] Preferably, the pipe system consists of metal, in particular copper.

[0045] The heat exchanger according to the invention is usually used for air conditioning rooms/buildings. It is typically mounted on the ceiling of a room in a building. In principle, however, it could also be mounted on the wall of a corresponding room (provided that such an appearance in the wall area does not have a disturbing effect).

[0046] Air conditioning preferably involves cooling the room, for which purpose a cooled or at least unheated medium, in particular water, is passed through the pipe system.

[0047] Alternatively, a heating effect can of course also be achieved by means of an appropriate heat exchanger, in which case a heated medium (in particular water) is passed through the pipe system.

[0048] The pipe system is in particular a surface heat exchanger, preferably a plate heat exchanger.

[0049] In this case, the pipe system is typically attached to a carrier plate with the help of the heat conducting plate.

[0050] This carrier plate can be provided, for example, by a cassette or a sail, which is why such heat exchangers are also called climate sails. Such a heat exchanger is typically designed in such a way that a plate (which can alternatively also be provided by the cassette itself) is inserted into a cassette that is attached to a room ceiling, on which the pipe sections of the pipe system rest.

[0051] The carrier plate is made in particular from steel, preferably aluminum or stainless steel or similar. The carrier plate can be inserted into a cassette or be formed by the cassette itself. In the first case, a connection can be made between the carrier plate and the cassette, for example by means of an adhesive layer or by means of magnets or similar.

[0052] Such plate heat exchangers usually enable heat transfer through a high proportion of thermal radiation (emitted from the plate/cassette). These plate heat exchangers can also be referred to as radiant ceiling panels and are preferred by the invention.

[0053] However, the invention also expressly does not exclude so-called finned heat exchangers, which have a higher convective component, since they essentially consist of fins which are arranged in parallel and form passages (or shafts) of the entire finned heat exchanger between them, which promote/enable the said convection.

[0054] Such finned heat exchangers generally have an even higher performance due to their convective properties, which are based on said passages/shafts, and are therefore also referred to as high-performance elements. For this purpose, the fins are manufactured or pressed in particular from (aluminium) profiles or, more recently, also manufactured by the applicant from sheet metal(s).

[0055] In principle, heat conducting plates can be used in both types of heat exchanger. This is common in plate heat exchangers, while in finned heat exchangers the heat conducting plates can be just as wide as the fins, which can also be made from a sheet of metal, so that the pipe sections are sandwiched between the heat conducting plate and the fin.

[0056] The air guide tubes can be closed or open at the opposite ends, whereby the former only seems to make sense if there are sufficient air outlets underneath the plate and/or to the side (see the following explanations) in the air guide tube.

[0057] According to a particularly advantageous embodiment of the invention, the air guide tube has lateral air outlets relative to its axial longitudinal extent.

[0058] In contrast to the device of the prior art, as provided in Fig. 1, the air outlets are therefore not assigned to the distributor element 6, but rather to the air guide tubes.

[0059] While the air outlets according to Fig. 1 are located on a connecting line which is aligned orthogonally to the axial extension of the air guide tubes, the air outlets according to the invention are typically located on one (or more) connecting lines which are arranged in the axial direction of the heat conducting plates / parallel to the straight tube sections.

[0060] These air outlets enable in particular air conditioning, preferably cooling of the pipe system (which is in contact with other areas of the heat conducting plate).

[0061] In the prior art, air outlets to the pipes were typically only provided in the central distribution element.

[0062] However, the present invention now has the advantage that the air guide tubes also have lateral air outlets. In addition, said air outlets can also be provided downwards, i.e. below the carrier plate or the slats.

[0063] The side air outlets are preferably arranged in such a way that they are arranged on a side of the air guide tube associated with a pipe section of the pipe system. This enables a particularly advantageous design of the heat exchanger according to the invention, since air can thus be supplied to the pipe sections from the outside, specifically or laterally or flankingly, in contrast to the prior art.

[0064] For example, the air outlets can be provided at regular axial distances from the air guide tube.

[0065] Alternatively or additionally, the said air outlets can be arranged approximately at the height of the pipe sections. A single air outlet can, for example, be located completely in the area of the vertical extension of the pipe section or at least partially overlap it in terms of height. A slightly higher arrangement should also be covered by this sub-aspect of the invention, at least as long as an air supply to the pipe section is ensured through the air outlet.

[0066] The air outlets in the air guide tubes (and thus in the heat conducting plate) can preferably be produced by a punching process and/or with the aid of a nibbling machine.

[0067] These air outlets can in particular be designed to retain material, in the sense that the material is deflected out of the sheet metal plane but basically remains on the sheet metal (for example in the sense of flaps or rasp holes or louvre holes, i.e. holes in which material is pushed through the (torn) sheet metal plane to create an opening but is not severed). Alternatively, material-removing holes can of course also be used to form the air outlets.

[0068] Advantageously, the air outlets are created directly during the processing of the sheet metal blank, for example before or after the heat conducting sheet is formed to form the air guide tube.

[0069] In order to form the air guide tube (or at least parts of the air guide tube), the sheet metal blank can in particular be bent. In this sense, an air guide tube is preferably created which has right angles and/or is rectangular in cross-section.

[0070] According to a further aspect of the invention, it relates to a method for producing a heat exchanger.

[0071] At this point, it should be noted that all features and advantages disclosed in connection with the heat exchangers described above should of course also be transferable to the method according to the invention (and vice versa), whereby said statements will not be repeated again at this point for reasons of clarity.

[0072] Of course, the method according to the invention thus also includes, merely by way of example, the production of a heat exchanger whose air guide tube has lateral air outlets (in particular regardless of whether the air guide tube is provided by the heat conducting plate).

[0073] The side air outlets can be incorporated into the raw sheet during the processing of the sheet, for example using a punching or nibbling machine or similar. The air outlets can be incorporated before or after bending the sheet.

[0074] According to a particularly advantageous aspect of the method, it is provided that the heat conducting plate is manufactured (or provided) at a first location, wherein it is (subsequently) brought to a second, remote assembly location. At this assembly location, the heat exchanger is assembled and mounted using the heat conducting plate.

[0075] In other words, the heat exchanger in this case is not assembled or completely manufactured at the first location. In this way, for example, so-called plug & play systems can be used, in which the heat conducting plate is only used at the second, remote assembly location to complete the heat exchanger.

[0076] For this purpose, the heat conducting plate can be manufactured at the first location and provided with an adhesive layer, which is covered, for example, by a protective layer, which is then removed at the mounting location, so that the heat conducting plate can be attached to a mounting plate (or slats) after the protective layer has been removed.

[0077] Alternatively, magnets can be supplied or a positive connection of the heat conducting sheet to a mounting plate (or slat) can be made at the installation site.

[0078] Furthermore, the invention also encompasses the fact that the heat conducting sheet is already applied to a carrier plate at the first location in order to produce a plug & play intermediate product.

[0079] At the second installation location, the carrier plate can then be installed, for example, in a cassette (in particular - after removing a protective layer from the carrier plate - glued into it or fastened magnetically or positively).

[0080] In any case, the decisive factor in this sub-aspect is that the heat exchanger is only assembled at the second location, with the heat conducting plate being manufactured at a different first location.

[0081] This particularly facilitates the transport of the heat exchanger, for example in individual parts.

[0082] The pipe system can be attached to the heat conducting plate at the first location (e.g. by clipping or pressing into the grooves of the heat conducting plate or by gluing or similar) or can be brought together with the heat conducting plate at the installation location.

[0083] Further advantages of the invention emerge from the uncited subclaims and from the following description of the embodiments shown in the drawings. Therein show: Fig. 1 in a very schematic, oblique isometric view, a device of the prior art already described, Fig. 2 in a schematic diagram, a building-side arrangement of three heat exchangers according to the invention, but omitting essential elements such as the pipe system or the heat conducting plates, Fig. 2a a schematic view of one of the heat exchangers according to Fig. 2, approximately along view arrow IIa in Fig. 2, Fig. 3 a very schematic sectional view in an isometric oblique view of an area of a heat exchanger according to the invention circled by a dashed line in Fig. 2, Fig. 4 a very schematic sectional view of the heat conducting plate shown in Fig. 3 including the pipe section, approximately along view arrow IV in Fig. 3, Fig. 4a in a view, approximately according to Fig. 4, the heat conducting plate shown there in a slight variation, Fig. 5 an exemplary view of a heat conducting plate according to Fig. 3 or Fig. 4, Fig. 6 is a very schematic side view of a heat conducting plate according to Fig. 3, approximately according to the view arrow VI in Fig. 3, Fig. 7 is a detail of the heat exchanger according to the invention according to Fig. 2a, comprising the heat conducting plate shown in Figures 3 to 6, which is arranged on a carrier plate, Fig. 8 is a very schematic detail view of a finned heat exchanger according to the invention, in which two fins are shown as an example, each with heat conducting plates attached, the fins forming a convection air shaft between them, Fig. 9 is a further embodiment of a heat exchanger according to the invention, in which the heat conducting plate extends over four pipe sections as an example and forms two air guide tubes, and Fig. 10 is a schematic top view of the device according to Fig. 9, approximately along top view arrow 10 in Fig. 9.

[0084] Embodiments of the invention are described by way of example in the following description of the figures, also with reference to the drawings. For the sake of clarity - even where different embodiments are concerned - identical or comparable parts or elements or areas are designated with identical reference symbols, sometimes with the addition of lower case letters, numbers and/or apostrophes. The same applies to the patent claims following the description of the figures.

[0085] Features which are only described in relation to one embodiment can also be provided in any other embodiment of the invention within the scope of the invention. Such modified embodiments are also included in the invention, even if they are not shown in the drawings.

[0086] All of the features disclosed are essential to the invention in themselves. The disclosure of the application hereby also fully includes the disclosure content of any associated priority documents (copy of the prior application) as well as any cited documents and the described devices of the prior art, also for the purpose of including individual or multiple features of these documents in one or multiple claims of the present application.

[0087] First, Fig. 2 shows an exemplary building space with a room interior 11, on the ceiling of which three heat exchangers 10a to 10c according to the invention are mounted. The three heat exchangers 10a to 10c are exemplary of the sail or cassette type, i.e. designed in the manner of plate heat exchangers, whereby the illustration according to Fig. 2 merely indicates their arrangement. Essential elements, such as the pipe system or the like, are not yet shown in Fig. 2.

[0088] An exemplary heat exchanger element 10, as indicated in Fig. 2, is shown in Fig. 2a in a plan view, approximately along the view arrow IIa in Fig. 2.

[0089] Fig. 2a shows a cassette 12, which simultaneously provides the carrier plate 13 of the heat exchanger 10 with its underside (it is to be left open whether a separate carrier plate is placed on the cassette bottom, on which elements such as pipe system 14 etc. are attached).

[0090] The pipe system 14 is designed as a pipe meander according to Fig. 2a. Purely as an example, this pipe meander 15 shows a configuration with two curved areas 17 and three straight pipe sections 18.

[0091] The straight pipe sections 18 are each assigned to a (separate) heat conducting plate 19, wherein each of the three heat conducting plates 19 shown as examples overlaps exactly one straight pipe section 18 of the pipe system 14 (and fixes it to the carrier plate 13).

[0092] What Fig. 2a already indicates is that the respective heat conducting plate 19 (co-)forms an air guide tube 15 in addition to a bead 20 for receiving the pipe section 18 (or in addition to a pipe contact region 21), namely preferably in an air guide tube region 22 arranged parallel to the pipe contact region 21.

[0093] The heat conducting plates 19 are arranged parallel to one another by way of example and in particular are spaced apart from one another.

[0094] In order to induce or supply the air guide tubes 15 with air according to the embodiment of Fig. 2a, a distributor element 16, indicated only by dashed lines, can be provided, which can correspond in terms of its basic features to the distributor element 6 according to Fig. 1 (wherein in the present case the central air outlets 8 according to Fig. 1 would actually no longer be necessary).

[0095] The distributor element 16 is connected in terms of air technology to each of the air guide tubes 15, even if this is not shown in Fig. 2a for the sake of clarity.

[0096] An exemplary hose for connecting the distributor element 16 is also not shown in Fig. 2a for the sake of clarity.

[0097] Fig. 3 then shows, very exemplarily, a section of the heat exchanger 10 shown in Fig. 2a, which region is outlined in dashed lines in Fig. 2a and is provided with the reference symbol III.

[0098] Fig. 3 makes it clear in particular that both the bead 20 for receiving the pipe section 18 and the air guide tube 15 (or at least essential parts thereof) are made from a common piece, namely the heat conducting plate 19.

[0099] For this purpose, the bead 20 can be embossed into the heat conducting plate 19, for example, and the air guide tube 15 can be produced by bending, wherein the bends produce a basically rectangular cross-section of the air guide tube 15.

[0100] It is also noticeable that the air guide tube 15 is not exclusively formed by the heat conducting plate, but the bottom of the air guide tube 15 is provided by the carrier plate 13.

[0101] In this respect, the heat conducting plate 19 in the present case forms the air guide tube 15 together with the carrier plate 13.

[0102] Furthermore, Fig. 3 shows that a wall section 23 of the heat conducting plate 19 or the air guide tube 15 provides air outlets 24, which are designed, for example, in the manner of flap perforations.

[0103] The air outlets 24 are provided purely by way of example at regular intervals on the side wall 23 of the air guide tube 15 associated with the bead 20 or the straight pipe section 18, in particular in order to guide the air actually guided within the air guide tube 15 laterally onto the straight pipe sections 18 or the pipe system 14.

[0104] The side sectional view according to Fig. 4 (cf. view arrow IV in Fig. 3) shows that these air outlets 24 are provided at the height of the bead 20 or the pipe section 18 or at least overlap it with respect to the height h.

[0105] The air flow L through the air outlet 24, laterally towards the straight pipe section 18 or the bead 20 (out of the air guide tube 15), is indicated in Fig. 4 by an arrow.

[0106] Fig. 4 (in which the carrier plate 13 is omitted for the sake of clarity) further shows that the other wall side 25 of the air guide tube 15 can also provide air outlets 36, which in this embodiment are arranged one above the other.

[0107] Fig. 4 also shows that the air outlets 24 and 36 are designed in the manner of material-preserving openings or perforations, but this does not have to be the case in principle. Rather, the material could also be completely removed when an outlet is introduced into the sheet metal.

[0108] As a slight variation to the heat conducting plate 19 shown in Fig. 4, Fig. 4a shows a slightly modified heat conducting plate 19', in which the air guide tube 15' is formed entirely by the heat conducting plate 19'. For this purpose, the end region 26' of the heat conducting plate 19' is bent opposite to the end region 26 of the embodiment according to Fig. 4 in order to close the air guide tube 15' from below.

[0109] Regardless of the embodiment according to Fig. 4 or Fig. 4a, it should be noted that the heat conducting plate 19 or 19' can be attached to the carrier plate 13 according to Fig. 3 or Fig. 2a in any desired manner, for example it can be glued there or fastened with the aid of magnets or the like.

[0110] Finally, Fig. 5 shows a top view of the heat conducting plate 19 shown in Fig. 3 and Fig. 4 together with the pipe section 18, i.e. approximately as shown in Fig. 2a, and Fig. 6 shows a side view, approximately according to view arrow VI in Fig. 3.

[0111] Fig. 7 then shows, in a view, approximately according to Fig. 4, a section of the heat exchanger 10 according to the invention, in which the heat conducting plate 19 is mounted on the or a carrier plate 13. The carrier plate 13 can be, for example, the underside of the cassette 12 according to Figures 2 and 2a or a separate carrier plate which is later introduced into such a cassette.

[0112] Fig. 7 illustrates by way of example that in this embodiment the heat conducting plate 19 is glued to the carrier plate 13 by means of an adhesive layer 27, in particular in a closing region 26, an opposite closing region 28 and in a central region 29.

[0113] The areas 26, 28 and 29 lie flat on the carrier plate 13.

[0114] Instead of bonding through the layer 27, however, a more environmentally friendly method of attachment could also be provided. For example, instead of (or in addition to) the adhesive layer 27, magnets 30 indicated by dashed lines in Fig. 7 could be used, in particular neodymium magnets or similar.

[0115] These magnets 30 can, for example, enter into magnetic interaction with the carrier plate 13. Of course, more or fewer than two magnets can be provided, and these can have any suitable shape.

[0116] Finally, what is not shown is that instead of or in addition to the magnets 30 and/or the adhesive layer 27, a positive connection between the carrier plate 30 and the heat-conducting sheet 19 can be provided, for example by means of tabs or openings, which can in particular be provided or incorporated directly in the sheet (by means of a nibbling machine).

[0117] Fig. 7 also shows air outlets 31 in the carrier plate 13. Through these, air can be guided via the distributor element 16 (not shown in Fig. 7) and the air guide tube 15 (which in this embodiment is formed by a downwardly open heat conducting plate 19) below the plane E of the carrier plate 13, i.e. into a plane below the heat exchanger 10.

[0118] Not shown in Fig. 7, for example, is an acoustic fleece or the like, which could in principle be provided and could have corresponding, congruent perforations to the air outlets 31.

[0119] Fig. 8 shows an alternative embodiment in which the heat exchanger 10' is designed as a finned heat exchanger. A section of the finned heat exchanger 10' is shown there, in which two fins 32 are arranged next to each other, spaced apart from each other, in order to leave a convection shaft 33 between them, through which the air can flow.

[0120] Each of the slats 32 has, in particular on its upper side, a heat conducting plate 19, as shown for example in Fig. 4, wherein the tube 18 is located between the heat conducting plate 19 and the slat 32 (which in the exemplary embodiment has a D-shape in cross section purely by way of example).

[0121] The heat conducting plates 19 can also be glued to the slats 32 in the embodiment according to Fig. 8 or fastened with the aid of magnets or in a form-fitting manner.

[0122] Finally, a last embodiment according to Fig. 9 shows a plate heat exchanger 10", in which the heat conducting plate 19" provides more than one bead 20, namely four beads 20' and also more than one air guide tube 15, namely two air guide tubes 15'.

[0123] This embodiment is intended to illustrate that a heat conducting plate 19" can extend over several (straight) pipe sections 18 and/or can (co-)form several air guide tubes 15' (which are arranged in particular in parallel).

[0124] This is also illustrated by the top view of this embodiment according to Fig. 10, which corresponds to a top view according to view arrow X in Fig. 9.

Claims (9)

1. Heat exchanger (10), in particular for air conditioning rooms (11), comprising a pipe system (14), in particular a meander pipe, for conducting a medium, wherein the pipe system (14) is fixed to a carrier plate (13) or to fins (32) of the heat exchanger (10) by means of a heat conducting plate (19), and wherein the heat exchanger (10) has at least one air guide tube (15), in particular arranged between parallel pipe sections (18), characterized in that the air guide tube (15) is provided by the heat conducting plate (19). 2. Heat exchanger (10) according to claim 1, characterized in that the heat conducting plate (19) has at least one bead (20) for receiving a, in particular straight, pipe section (18) of the pipe system (14). 3. Heat exchanger (10") according to claim 1 or 2, characterized in that the heat conducting plate provides at least two, in particular parallel, air guide tubes (15') and/or beads (20'). 4. Heat exchanger (10) according to one of the preceding claims, characterized in that the air guide tube (15') is formed by the heat conducting plate (19') alone or by the heat conducting plate (19) in combination with the carrier plate (13) or lamella (32). 5. Heat exchanger (10) according to one of the preceding claims, characterized in that the air guide tube (15) has lateral air outlets (24, 36) relative to its axial longitudinal extent (I). 6. Heat exchanger (10) according to claim 5, characterized in that the air outlets (24) are arranged on a side (23) of the air guide tube (15) associated with a pipe section (18) of the pipe system (14) and/or approximately at the height (h) of this pipe section (18). 7. Method for producing a heat exchanger (10), in particular according to one of the preceding claims, comprising fixing a pipe system (14) for conducting a medium to a carrier plate (13) or to fins (32) with the aid of a heat conducting plate (19), characterized in that the heat conducting plate (19) is processed, in particular formed, further in particular bent, in such a way that it provides an air guide tube (15). 8. Method according to claim 7, characterized in that lateral air outlets (24, 36) for the air guide tube (15) are provided in the heat conducting plate (19), in particular with the aid of a nibbling machine. 9. Method according to claim 7 or 8, characterized in that the heat conducting plate (19), and in particular the pipe system (14), is manufactured and/or provided at a first location, which is then brought to a second, remote assembly location, at which the heat exchanger (10) is assembled and mounted using the heat conducting plate (19).