Method for producing a pipe bundle with outer and inner shape and heat exchanger

Abstract

The invention relates to a method (100) for producing a line bundle (10) for a heat exchanger (1), comprising: connecting (101) a plurality of lines (11) for conducting a temperature control fluid of the heat exchanger (1), thereby creating an outer shape (12) that extends circumferentially around an inner region (13). Furthermore, the invention relates to a heat exchanger (1).

Description

The invention relates to a method for producing a line bundle for a heat exchanger and to a heat exchanger.It is known from the prior art to provide heat exchangers with a plurality of lines distributed over a cross section in order to increase the effective surface area of the heat exchanger. It is also known to achieve a three-dimensional arrangement of lines and thereby further increase the effective surface of the heat exchanger. For example, it is known from document AU 2005 202 782 A1 to provide a heat exchanger with a round cross section. However, as the number of the pipes to be arranged increases, the handling effort in the production of such a bundle increases if the pipes are only processed individually in the production of the heat exchanger.It is an object of the present invention to at least partially eliminate the above disadvantages known from the prior art. In particular, it is an object of the present invention to simplify a method for producing a heat exchanger and / or to increase a degree of automation in the method.The above object is achieved by a method with the features of claim 1 and a heat exchanger with the features of claim 10. Features and details which are described in connection with the method according to the invention naturally also apply in connection with the heat exchanger according to the invention and vice versa, so that with regard to the disclosure reference is or can always be made reciprocally to the individual aspects of the invention.According to a first aspect of the invention, a method for producing a line bundle for a heat exchanger is provided. The method comprises, in particular in the form of method steps:connecting a plurality of lines for conducting a temperature control fluid of the heat exchanger through a textile production process, so that an outer shape is produced which extends circumferentially around an inner region, in particular through a first mounting device,connecting a plurality of, in particular further, lines for conducting the temperature control fluid of the heat exchanger through the textile production method, so that an inner shape is produced which can be arranged in the inner region, in particular by the first mounting device,introducing the inner mold into the inner region of the outer mold, in particular by means of a second mounting device,fixing the inner mold and the outer mold to one another, in particular by the second or a further mounting device.The heat exchanger can preferably be a heat exchanger for a vehicle, a microcooler and / or a capillary heat exchanger. The temperature control fluid can be designed to absorb and / or emit heat. For example, the temperature control fluid can be a cooling liquid for throughflow through the lines and / or for circulation in the heat exchanger. The heat exchanger can preferably be designed hose-like, tube-like and / or rod-like. In particular, the lines can be arranged parallel to one another in the heat exchanger.The conduits may comprise portions of a conduit system of the heat exchanger. Preferably, the conduits may comprise pipes and / or hoses. In particular, the lines can form microchannels. Under the line bundle, in particular, can comprise a coherent assemblage of the lines. The line bundle can comprise a three-dimensional, in particular a hose-like, shape.When connecting the lines for the outer and / or inner shape, the lines can be flexibly and / or rigidly fastened to each other. In particular, the same manufacturing steps can be carried out for connecting the lines for the outer mold and for connecting the lines for the inner mold. The textile production method can comprise, for example, weaving, knitting and / or knitting. In this case, a textile can be formed which encloses the lines and / or into which the lines are woven. In particular, the textile production method can be a two-dimensional (2-D) and / or three-dimensional (3-D) textile production method. In this case, a stiffness of the connection can be adjusted as a function of a textile tension in the textile production method. In particular, the lines can be fixed relative to one another when connecting the lines for the outer and / or inner shape. Furthermore, the inner shape can correspond geometrically to the outer shape, in particular to the inner region. Preferably, the inner mold is manufactured such that the inner mold can be introduced at least once or several times into the outer mold. The outer and inner shapes can have a round and / or angular outer surface. Preferably, flow directions of the lines of the outer and / or inner shape are oriented parallel to one another. The conduits of the outer and inner shapes may have a uniform conduit diameter. However, it is also conceivable that the lines of the outer and inner shape differ in line diameter. Preferably, the lines of the outer and inner shapes are each arranged in a single layer.The interior region may include an opening that remains lead-free when connecting the leads for the outer mold. Thus, the inner region can form a cavity in particular. The connecting of the lines for the outer and / or inner mold can preferably be effected in a continuous production process. For example, the lines can be supplied as web material and / or continuous material and connected to one another along a production direction. It can be provided that the lines are fed to the first and / or second mounting device for connecting the lines for the outer and / or inner mold along a production direction.When the inner mold is introduced into the inner region, the inner mold can be inserted and / or inserted into the inner region or the outer mold can be placed over the inner mold. The outer mold may encase the inner mold after the inner mold is inserted into the interior region. The introduction can preferably be automated. The outer and inner molds can thus form different, in particular coaxial, line layers, which are brought together when the inner mold is introduced into the inner region.The fastening of the outer and inner molds to each other can be effected in particular in a form-fitting, force-fitting and / or firmly bonded manner. When fastening the outer and inner molds, the outer and inner molds can be flexibly and / or rigidly fastened to each other. In particular, the outer and inner molds can be fixed relative to each other when fastening the outer and inner molds. It is conceivable that the fastening of the outer and inner mold takes place when the inner mold is introduced into the inner region, for example in order to fasten the outer and inner molds to one another in a positive and / or non-positive manner.The method according to the invention can thus simplify the production of the line bundle. It has thus been recognized within the scope of the present invention that the lines can be advantageously grouped and further processed into groups by the connection to the outer and inner mold by the textile production method. In this case, the line bundle can be constructed in a layer-like manner, in particular by concentric layers. Standardized units can thus be produced which can be combined with one another by the introduction of the inner mold into the outer mold. The introduction of the inner mold into the inner region can therefore be part of an assembly process of the heat exchanger, in particular in order to produce its final mold.It is furthermore conceivable in a method according to the invention that the inner shape and / or the outer shape is hose-like, in particular wherein the inner shape has an annular and / or fully circular first cross section and / or the outer shape has an annular second cross section. Preferably, the lines of the outer mold are arranged along the cross-sectional shape of the second cross-section and / or the lines of the inner mold are arranged along the cross-sectional shape of the first cross-section. In this case, a cross-sectional shape of the first and / or second cross-section can relate to an inner circumference and / or an outer circumference, in particular of an enveloping circle on the inner circumference and / or on the outer circumference. It is furthermore conceivable for the flow axes of the lines of the inner mold to be arranged on an annular and / or fully circular path and for the flow axes of the lines of the outer mold to be arranged on an annular path. It can be provided that a longitudinal extension of the lines is oriented perpendicular to the first and / or second cross section. The annular, second cross section can thus surround the inner mold over its entire circumference when the inner mold is introduced into the inner region. When the inner shape has a fully circular first cross-section, the inner shape may form an inner core of the heat exchanger. The inner mold can have an outer circumference which, after being introduced into the inner region, is placed against an inner circumference of the outer mold. It is conceivable that the inner mold is introduced along the inner circumference of the outer mold.Furthermore, in a method according to the invention, it is conceivable that the outer mold, after the inner mold has been introduced into the inner region of the outer mold, bears circumferentially against an outer surface of the inner mold. Thus, when the inner mold is introduced into the inner region, the inner mold can preferably be arranged coaxially with the outer mold. The outer mold can form a jacket which makes full circumferential contact with the inner mold. This makes it possible to achieve high stability of the inner and outer shapes with respect to one another. Furthermore, a high packing density of the lines can thereby be achieved in order to increase the effective surface area of the heat exchanger.Furthermore, it is conceivable in a method according to the invention that, in particular when connecting the lines for the outer and / or inner mold, the lines of the inner mold and / or the lines of the outer mold, in particular in the textile manufacturing method, are fastened to one another by at least one fibrous fastening element in each case. Thus, at least one fastening element can be used for each of the inner and outer shapes. The fibrous fastening element can be, in particular, a textile and / or nonwoven fastening element. Preferably, the fibrous fastening element is configured in a thread-like manner, e.g. in the form of a permanent or non-permanent thread. Furthermore, the fastening element can comprise, for example, a glass fiber, a wire and / or at least one polymer fiber. The fibre-like fastening means can bundle the lines together flexibly or rigidly. Furthermore, the respective lines can be connectable to one another by the fastening means in an endless process. Thereby, the inner and outer shapes can be provided in an automated process to which the fastener and the leads are supplied.Preferably, in a method according to the invention, it can be provided that the textile production method is a weaving method for weaving the respective fiber-like fastening element with the respective lines. The weaving process can preferably be carried out by a weaving machine. In this case, the lines can be arranged uniformly and fixed with respect to one another in order to form the outer and / or inner shape. The lines connected by the fastening means can either be wound on bobbins in a line width of the weaving machine or can be stacked in the form of blanks by a cutting device, preferably with roller knives. As a result, the outer and inner shapes can be made available in a simple manner as semi-finished products for further processing. In particular, high reproducibility can be made possible by the weaving method.Furthermore, in a method according to the invention, it can advantageously be provided that the weaving method is a round weaving method, in particular in the form of a tubular weaving method. The fastening element can be used as yarn for the circular weaving process. In the circular weaving method, it can be provided that the lines are interwoven by the fastening element in the ring- and / or fully circular first and / or second cross section. As a result, a round geometry of the outer and inner shapes can be produced in a simple manner.Within the scope of the invention, it is furthermore conceivable that the at least one inner mold forms a jacket, wherein in addition to the at least one inner mold a core mold is provided for forming an innermost mold of the line bundle, which core mold is inserted into the jacket and connected to the outer and inner molds. Thus, the heat exchanger may comprise at least three different groupings of conduits, namely at least the outer shape, at least one inner shape and the core shape. It can be provided that the core mold has no or only a slight inner region, so that the core mold fills the inner mold. For example, the core shape can have only three lines which are arranged in pyramid-like fashion. This makes it possible to achieve a high packing density of the lines for the heat exchanger.Furthermore, in a method according to the invention, it can advantageously be provided that a plurality of inner molds having different diameters are produced, wherein the inner molds are each pushed into one another and are connected together with the outer mold. It can be provided that the number of inner shapes depends on an inner diameter of the inner space of the outer shape and a line diameter of the lines. Due to the plurality of inner shapes, the heat exchanger can also be configured in a layer-like manner with a large outer diameter.Furthermore, it is conceivable in a method according to the invention that the outer and inner mold are each cut to a predefined length after the connection of the lines before and / or after the introduction of the inner mold into the inner region of the outer mold. If the blank is made after the inner mold has been introduced into the inner region, the outer mold and the inner mold can be cut to size simultaneously. If the blank is carried out before the inner mold is introduced into the inner region, the outer mold and the inner mold can be further processed individually. As a result, the outer and / or inner shape can be produced and / or provided, for example, as web and / or roll material. Further, the outer and inner molds may be processed in a continuous manufacturing process. For the blank to the predefined length, a cutting device can be provided, in particular which carries out the blank at regular intervals.According to a further aspect of the invention, a heat exchanger for a vehicle is provided. The heat exchanger has a line bundle which is produced by a method according to the invention.Thus, a heat exchanger according to the invention provides the same advantages as have already been described in detail with reference to a method according to the invention.Further advantages, features and details of the invention will become apparent from the following description, in which exemplary embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description can be essential to the invention individually or in any combination. They show schematically: FIG. 1 shows a vehicle with a heat exchanger according to the invention, FIG. 2 shows several forms for a pipe bundle for the heat exchanger, FIG. 3 shows the line bundle, FIG. 4 shows a circular weaving method for connecting lines of the line bundle, and FIG. 5 shows a sequence of a method according to the invention for producing the line bundle.In the following description of some exemplary embodiments of the invention, the identical reference numerals are used for the same technical features even in different exemplary embodiments.FIG. 1 shows a vehicle 2 with a heat exchanger 1 according to the invention in a first exemplary embodiment. The heat exchanger 1 has a line bundle 10, as shown in FIG. 3, which is produced by a method 100 according to the invention for producing the line bundle 10. A sequence of the method 100 is schematically illustrated in FIG. 5.In the method 100, firstly a connection 101 of a plurality of lines 11 for conducting a temperature control fluid of the heat exchanger 1 is effected by a textile production method 200, so that an outer mold 12 is produced which extends circumferentially around an inner region 13. Furthermore, an inner mold 14, which can be arranged in the inner region 13, is produced by connecting 102 a plurality of lines 11 for conducting the temperature control fluid of the heat exchanger 1 through the textile production method 200, so that the inner mold 14 is produced.As shown in FIGS. 2 and 3, the inner mold 14 and / or the outer mold 12 can be formed in a hose-like manner. The inner mold 14 has an annular and / or fully circular first cross section 14.1 and / or the outer mold 12 has an annular second cross section 12.1. For this purpose, the lines 11 of the inner mold 14 and / or the lines 11 of the outer mold 12 are each fastened to one another by at least one fibrous fastening element 15. During the respective connection 101, 102 of the lines 11 for the inner and outer molds 14, 12, the inner and outer molds 14, 12 are each produced by the textile production method 200, preferably in the form of a weaving method for weaving the respective fiber-like fastening element 15 with the respective lines 11. As shown in FIG. 4, the weaving method is in particular a round weaving method.Furthermore, in the method 100, the inner mold 14 is introduced 103 into the inner region 13 of the outer mold 12. After the inner mold 14 is introduced 103 into the inner region 13 of the outer mold 12, the outer mold 12 abuts circumferentially on an outer surface of the inner mold 14, as shown in FIG. 3. It can be provided that the outer and inner molds 12, 14 are cut to a predefined length after the connection 101, 102 of the lines 11 and before the introduction 103 of the inner mold 14 into the inner region 13 of the outer mold 12, respectively.After the inner mold 14 has been introduced 103 into the inner region 13 of the outer mold 12, the inner mold 14 and the outer mold 12 are fastened to one another 104. For this purpose, for example, a weaving method, in particular in the form of a round weaving method, can likewise be used.As shown in FIG. 2, the at least one inner mold 14 forms, in particular, a jacket. In addition to the at least one inner mold 14, a core mold is provided for forming an innermost mold 14.2 of the line bundle 10, which is inserted into the jacket and connected to the outer and inner molds 12, 14. Alternatively, the inner mold 14 may form the core mold, for example, if only two groupings of lines 11 are provided.Furthermore, the method 100 for producing a multilayer line bundle 10 can be extended. For this purpose, it can be provided that a plurality of inner molds 14 having different diameters are produced, which are pushed one inside the other according to the structure of FIGS. 2 and 3 and are connected together with the outer mold 12.

Claims

Method (100) for producing a line bundle (10) for a heat exchanger (1), comprising: - connecting (101) a plurality of lines (11) for conducting a temperature control fluid of the heat exchanger (1) by a textile production method (200), so that an outer mould (12) is produced, which extends circumferentially around an inner region (13), - connecting (102) a plurality of lines (11) for conducting the temperature control fluid of the heat exchanger (1) by the textile production method (200), so that an inner mould (14) is produced, which can be arranged in the inner region (13), - introducing (103) the inner mould (14) into the inner region (13) of the outer mould (12), - fastening (104) the inner mould (14) and the outer mould (12) to one another.Method (100) according to claim 1, characterised in that the inner mould (14) and / or the outer mould (12) is hose-like, wherein the inner mould (14) has an annular and / or fully circular first cross-section (14.1) and / or the outer mould (12) has an annular second cross-section (12.1).Method (100) according to Claim 1 or 2, characterized in that the outer mould (12), after the inner mould (14) has been introduced (103) into the inner region (13) of the outer mould (12), bears circumferentially against an outer surface of the inner mould (14).Method (100) according to one of the preceding claims, characterized in that the lines (11) of the inner mould (14) and the lines (11) of the outer mould (12) are fastened to one another by in each case at least one fibrous fastening element (15).Method (100) according to one of the preceding claims, characterized in that the textile production method (200) is a weaving method for weaving the respective fiber-like fastening element (15) with the respective lines (11).Method (100) according to claim 5, characterised in that the weaving method is a round weaving method.Method (100) according to one of the preceding claims, characterized in that the at least one inner mould (14) forms a jacket, wherein in addition to the at least one inner mould (14) a core mould is provided for forming an innermost mould (14.2) of the line bundle (10), which is inserted into the jacket and connected to the outer and inner mould (12, 14).Method (100) according to one of the preceding claims, characterized in that a plurality of inner moulds (14) having different diameters are produced, wherein the inner moulds (14) are in each case pushed one inside the other and are connected together to the outer mould (12).Method (100) according to one of the preceding claims, characterized in that the outer and inner mould (12, 14) are each cut to a predefined length after the connection (101, 102) of the lines (11) and before the introduction (103) of the inner mould (14) into the inner region (13) of the outer mould (12).Heat exchanger (1) for a vehicle (2) comprising a pipe bundle (10) produced by a method (100) according to one of the preceding claims.

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