CH720433B1 - Heat exchangers and methods for their manufacture - Google Patents

Abstract

The invention relates to a heat exchanger, in particular for air conditioning rooms, comprising a pipe system, in particular a pipe meander, for guiding 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 guides a heated or cooled medium along a support plate (or in alternative embodiments along fins). The pipe system is usually fixed to the support plate/fin in its straight sections by means of at least one strip-like heat-conducting plate that overlaps (or extends under) the pipe system.

[0003] According to the present invention, heat exchangers of this type have air guide tubes which enable a targeted guidance of supplied air above the support 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 forms the support plate 3 for a pipe system 4. The pipe system 4 is arranged on the support 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 exemplary 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 supplied 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 inside them and discharge it downwards with respect to Fig. 1 - via recesses in the support plate 3 which are concealed in Fig. 1 and therefore not visible.

[0007] Ventilation above the support 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, especially since the ventilation effect decreases with increasing axial distance from the distributor element 6, and ventilation shadows 9 also occur in the area of the distributor element 6 (for example below the outlets 8).

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

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

[0010] The invention solves the stated problem with the features of claim 1 and is therefore characterized in particular by the fact 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 integrated - at least partially - 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 therefore formed (materially bonded) from one piece.

[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 parallel and/or both be axially aligned.

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

[0015] In accordance with the invention, the air guide tube can be formed entirely by the heat-conducting plate or at least partially or section by section. Partially or section by section in this sense means that the air guide tube can be formed, for example, by the heat-conducting plate together with another element that 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 another side or section can, for example, be formed by the support plate or a fin of the heat exchanger. In other words, the support plate or the fin can enclose 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, for example, 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 off or sealed by the support plate or the lamella.

[0018] In the sense of the invention, the air guide tube is therefore in particular a completely 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 perforations can of course still be provided in the air guide tube, whereby the tube can still be described as completely closed, since in this respect it is only a matter of the basic presence of surrounding walls).

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

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

[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, it is a closed tube in the sense that the air is guided in a shaft-like manner, in particular on the top of the support plate (or above the lamellae).

[0023] For the purposes of the invention, the air guide tube can also be described, for example, as a closed air guide duct or air guide shaft or similar.

[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 thin sheet metal) or has a material thickness of between 3 mm and 4.75 mm (medium sheet metal) or even more than 4.75 mm (heavy sheet metal).

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

[0026] It can typically overlap sections of the pipe system, in particular straight (preferably parallel) sections of the pipe system.

[0027] To overlap the pipe section, the heat-conducting plate can, for example, have a (pressed-in) groove.

[0028] In other cases, the heat-conducting plate can simply be located under the pipe and the pipe is attached to the heat-conducting plate (e.g. welded), which in turn rests against the support plate or fin.

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

[0030] Preferably, the heat-conducting plate is designed in a strip shape.

[0031] In this sense, the heat-conducting plate may preferably have at least two sections arranged side by side in the axial direction, namely a pipe contact section and an air guide tube section.

[0032] In the 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 pipe contact sections.

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

[0035] The heat-conducting plate is typically fixed to the carrier plate or lamella, for example by gluing or, which is more environmentally friendly, by using magnets. Alternatively, a form-fitting fastening (which can be separated without tools) can also be used, for example with the help of tabs and/or receptacles 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 guide plate (or by a common heat guide plate).

[0037] The air guide tubes can be arranged, in particular, between two (parallel) pipe sections. The multiple 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 direct air through openings below the support plate or lamella.

[0040] If the heat-conducting plate forms the air guide tube completely, the bottom area of the air guide tube, which rests on the support plate or lamella, can have holes which are in particular aligned congruently with holes of the support 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 necessarily excluded from the invention).

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

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

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

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

[0046] The air conditioning preferably involves cooling the room, for which purpose a cooled or at least not heated medium, in particular water, is conveyed through the pipe system.

[0047] Alternatively, a heating effect can of course also be achieved by means of a suitable heat exchanger, in which case a heated medium (especially 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 typically rests against a support plate with the aid of the heat-conducting plate.

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

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

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

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

[0054] Due to their convective properties, which are inherent in the aforementioned passages/shafts, such finned heat exchangers generally exhibit even higher performance and are therefore also referred to as high-performance elements. For this purpose, the fins are manufactured, in particular, from (aluminum) profiles or pressed, or, more recently, by the applicant, also from sheet metal.

[0055] In principle, heat-conducting plates can be used in both types of heat exchangers. This is common in plate heat exchangers; in finned heat exchangers, the heat-conducting plates can be as wide as the fins, which can also be machined from a single sheet, 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 opposite ends, the former only seeming to make sense if there are sufficient air outlets below the plate and/or laterally (see following descriptions) in the air guide tube.

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

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

[0059] While the air outlets according to Fig. 1 are located on a connecting line which is orthogonal to the axial extension of the air guide tubes, according to the invention the air outlets 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 pipe 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] 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 located downwards, i.e. below the support plate or the louvers.

[0063] The lateral air outlets are preferably arranged such that they are located 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, in a targeted manner, either laterally or flanking, in contrast to the prior art.

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

[0065] Alternatively or additionally, said air outlets can be arranged approximately at the level of the pipe sections. A single air outlet can, for example, lie entirely within the vertical extent of the pipe section or at least partially overlap it with respect to height. Even a slightly higher arrangement is said to 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 be designed in a way that preserves material, in that the material is deflected from the plane of the sheet metal but essentially remains attached to the sheet (for example, in the form of flaps, rasp perforations, or louver perforations, i.e., perforations where material is forced through the (torn) plane of the sheet metal to create an opening but is not removed). Alternatively, of course, perforations that remove material can 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 create the air guide tube.

[0069] 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 way, an air guide tube is preferably produced which has right angles and/or a rectangular cross-section.

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

[0071] It should be noted at this point that all features and advantages disclosed in connection with the heat exchangers described above are of course also transferable to the method according to the invention (and vice versa), and the aforementioned statements will not be repeated here for the sake of clarity.

[0072] Of course, the production of a heat exchanger whose air guide tube has lateral air outlets is included by way of example only (in particular regardless of whether the air guide tube is provided by the heat guide plate).

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

[0074] According to a particularly advantageous aspect of the method, the heat-conducting plate is manufactured (or provided) at a first location, and is then transported 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 is not assembled or completely manufactured at the first location in this case. In this way, for example, so-called plug-and-play systems can be used, in which the heat-conducting plate is only used to complete the heat exchanger at the second, remote assembly location.

[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 that is then peeled off at the mounting location, so that the heat-conducting plate can be attached to a mounting plate (or fins) after the protective layer has been peeled off.

[0077] Alternatively, magnets can be supplied or a positive connection of the heat-conducting plate with a mounting plate (or lamella) can be made at the mounting location.

[0078] Furthermore, the invention also includes the fact that the heat-conducting plate for the production of a plug&play intermediate product is applied to a carrier plate at the first location.

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

[0080] In this sub-aspect, it is crucial that the heat exchanger is assembled at the second location, while the heat-conducting plate is manufactured at a different first location.

[0081] This makes it easier in particular to transport 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 grooves of the heat-conducting plate or by gluing or similar) or only brought together with the heat-conducting plate at the installation location.

[0083] Further advantages of the invention will become apparent from the uncited dependent claims and from the following description of the exemplary embodiments illustrated in the drawings. These show:

Fig. 1

in a very schematic, oblique isometric view, a previously described device of the prior art,

Fig. 2

in a schematic diagram, a building-side arrangement of three heat exchangers according to the invention, however omitting essential elements such as the pipe system or the heat-conducting plates,

Fig. 2a

a schematic top view of one of the heat exchangers according to Fig. 2, approximately along view arrow IIa in Fig. 2,

Fig. 3

a very schematic section view in an isometric oblique top view of an area of a heat exchanger according to the invention, which is circled with dashed lines 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 top view of a heat-conducting plate according to Fig. 3 or Fig. 4,

Fig. 6

a very schematic side view of a heat-conducting plate according to Fig. 3, approximately according to view arrow VI in Fig. 3,

Fig. 7

a section of the heat exchanger according to the invention as shown in Fig. 2a, comprising the heat-conducting plate shown in Figures 3 to 6, which is arranged on a support plate,

Fig. 8

a very schematic section view of a finned heat exchanger according to the invention, in which two fins are shown by way of example, each with heat-conducting plates attached, wherein the fins form a convection air duct between them,

Fig. 9

a further embodiment of a heat exchanger according to the invention, in which the heat-conducting plate extends over four pipe sections and forms two air guide tubes, and

Fig. 10

a schematic top view of the device according to Fig. 9, approximately along top view arrow 10 in Fig. 9.

[0084] Exemplary embodiments of the invention are described in the following description of the figures, also with reference to the drawings. For the sake of clarity, identical or comparable parts, elements, or areas are designated with the same reference numerals, sometimes with the addition of lowercase letters, numbers, and/or apostrophes, even where different embodiments are involved. The same applies to the patent claims following the description of the figures.

[0085] Features that are described only 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 included in the invention, even if they are not shown in the drawings.

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

[0087] Fig. 2 shows an exemplary building space with an 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 similar, are not yet shown in Fig. 2.

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

[0089] Fig. 2a shows a cassette 12 which simultaneously provides the support plate 13 of the heat exchanger 10 with its underside (it is left open whether a separate support plate is placed on the bottom of the cassette, 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. This pipe meander 15 shows, purely by way of example, a configuration with two curved sections 17 and three straight pipe sections 18.

[0091] The straight pipe sections 18 are each assigned to a (separate) heat-conducting plate 19, with each of the three exemplary heat-conducting plates 19 overlapping exactly one straight pipe section 18 of the pipe system 14 (and fixing it to the support plate 13).

[0092] As Fig. 2a already indicates, the respective heat-conducting plate 19 forms an air guide tube 15 next to a groove 20 for receiving the pipe section 18 (or next to a pipe contact area 21), namely preferably in an air guide tube area 22 arranged parallel to the pipe contact area 21.

[0093] The heat-conducting plates 19 are arranged parallel to each other by way of example and in particular have a spacing between them.

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

[0095] The distributor element 16 is connected to each of the air guide tubes 15 in terms of air technology, although 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, in a very exemplary way, a section of the heat exchanger 10 shown in Fig. 2a, which area is outlined with a dashed line in Fig. 2a and is provided with the reference numeral III.

[0098] Fig. 3 illustrates in particular that both the groove 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 groove 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 further noted that the air guide tube 15 is not formed exclusively by the heat-conducting plate, but that the bottom of the air guide tube 15 is provided by the support plate 13.

[0101] In this case, the heat-conducting plate 19 forms the air guide tube 15 together with the support plate 13.

[0102] Furthermore, Fig. 3 illustrates that a wall section 23 of the heat-conducting plate 19 or the air guide tube 15 provides air outlets 24, which are designed by way of example in the form 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 groove 20 or the straight pipe section 18, in particular to direct the air which is actually guided inside the air guide tube 15 laterally onto the straight pipe sections 18 or the pipe system 14.

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

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

[0106] Fig. 4 (in which the support 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 in particular arranged one above the other.

[0107] Fig. 4 also illustrates that the air outlets 24 and 36 are designed as material-preserving openings or perforations, although this is not necessarily the case. 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 section 26' of the heat-conducting plate 19' is bent in the opposite direction to the end section 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 way, for example by gluing or by attaching it 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 similar 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 support plate 13. The support plate 13 can, for example, be the underside of the cassette 12 according to Figures 2 and 2a or a separate support plate which is subsequently inserted into such a cassette.

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

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

[0114] Instead of bonding by layer 27, a more environmentally friendly method of attachment could also be provided. For example, magnets 30, indicated by dashed lines in Fig. 7, could be used instead of (or in addition to) the adhesive layer 27, 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, which is not shown, instead of or in addition to the magnets 30 and/or the adhesive layer 27, a positive-locking 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 into the sheet (with the aid of a nibbling machine).

[0117] Fig. 7 further shows air outlets 31 in the support plate 13. Through these, air can be guided via the (not shown in Fig. 7) distributor element 16 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 support 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 similar material which could be provided and 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, in which two fins 32 are arranged side by side, spaced apart from each other, to leave a convection channel 33 between them through which the air can flow.

[0120] Each of the fins 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 fin 32 (which in the exemplary embodiment has a D-shape in cross-section).

[0121] In the embodiment shown in Fig. 8, the heat-conducting plates 19 can also be glued to the fins 32 or attached using magnets or by means of a positive locking mechanism.

[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 corrugation 20, namely four corrugations 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 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 pipe meander, for guiding a medium, wherein the pipe system (14) is fixed to a support 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 groove (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 support plate (13) or fin (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) with respect 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 at approximately the height (h) of this pipe section (18). 7. Method for manufacturing a heat exchanger (10) according to one of the preceding claims, comprising defining a pipe system (14) for guiding a medium on a support plate (13) or on fins (32) by means of a heat-conducting plate (19), characterized in that the heat-conducting plate (19) is processed, in particular formed, and 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 by means 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, wherein it is then moved to a second, remote assembly location, at which the heat exchanger (10) is assembled and mounted using the heat-conducting plate (19).