CN101606014A - Conduit Connectors for Media Conduits - Google Patents

Abstract

The invention relates to a line connector (1) for media lines, comprising a connector head (2) having at least one connection section (6, 8) for connection to a media line (4) or to a system, and a transition section (10) adjacent to the connection section (6, 8), wherein the transition section (10) has a fluid channel (11). At least in the region of the transition section (10), an electrical heating device (12) is provided, which electrical heating device (12) surrounds at least a part of the fluid channel (11). The invention further relates to an assembled media line comprising a supply pipe around which a heating conductor (29) is fitted and a heatable line connector which is fixed to at least one supply pipe end of the media line.

Description

Conduit Connectors for Media Conduits

technical field

The invention relates to a conduit connector for a medium conduit, in particular a line or hose for a hydraulic fluid medium, comprising a connection head having at least one connection for connection to a medium conduit or a complete plant segment and a transition segment adjacent to the connecting segment, the transition segment having an internally disposed fluid channel.

Furthermore, the invention also relates to an assembled media conduit using such a conduit connector.

Background technique

的导管就是这样的情况，所述尿素溶液被作为NO_x的还原添加剂应用于带有所谓选择性催化还原催化剂(SCR-Katalysator)的柴油发动机中。Such a line connector is used for joining at least two medium lines or for connecting at least one line to any desired system, in particular to a motor vehicle. In motor vehicles, media are often conveyed through conduits which, due to their high freezing point, tend to freeze at higher ambient temperatures, which are quite possible depending on climatic changes. This will affect some functions. E.g. water pipes for window washer systems and urea solutions

This is the case for the conduit of the urea solution which is used as a NO _x reducing additive in diesel engines with a so-called selective catalytic reduction catalyst (SCR-Katalysator).

Contents of the invention

The object underlying the present invention is to create a conduit connector of the above-mentioned type which is particularly suitable for the above-mentioned preferred application and which prevents the corresponding medium from solidifying in the confines of the connector. Another object on which the present invention is based is to provide an assembled catheter for the same purpose.

This object is achieved according to the invention by the features of claim 1 . Further advantageous design features of the invention are contained in the respective sub-claims.

Correspondingly, according to the invention, at least in the range of the transition section, that is to say on the area outside the connection section, an electric heating device (elektrische Heizmittel) is arranged, which surrounds at least part of the circumference of the fluid channel, but preferably over the entire The entire circumference of the fluid channel is enclosed within the range of 360° angle. By melting the medium that has solidified, for example as a result of the vehicle being parked overnight, the heating device prevents or eliminates the solidification of the corresponding medium inside the connection head. The heating device is designed in such a way that it can ensure the predetermined heat supply when the electrical insulation, thermal conductivity and mechanical properties are good, and the occurrence of mechanical damage and corrosion can be avoided. Due to the uninterrupted supply of heat over the entire length of the assembled conduit according to the invention, it is ensured that the medium does not freeze during the entire conveying path.

Description of drawings

In the following, the invention is explained in detail with the aid of several preferred embodiments depicted in the drawings, together with several advantageous configurations and the advantages provided. in:

Figure 1: A perspective view of a possible embodiment of a catheter connector according to the invention,

Figure 2: A perspective view of another embodiment of the catheter connector according to the invention,

Figure 3: A perspective view of another embodiment of the catheter connector according to the invention,

Figure 4: A perspective view of another embodiment of the catheter connector according to the invention,

Figure 5: A perspective view of another embodiment of the catheter connector according to the invention,

Figure 6: A perspective view of another embodiment of the catheter connector according to the invention,

Figure 7: A perspective view of another embodiment of the catheter connector according to the invention,

Figure 8: A longitudinal section view of another embodiment of a catheter connector,

Figure 9: A perspective view of a preferred embodiment of a catheter connector according to the invention in a first viewing direction,

Figure 10: A perspective view of a preferred embodiment of a catheter connector according to the invention on the side opposite to that shown in Figure 9,

Fig. 11: longitudinal section view (according to section XI-XI among Fig. 12) of conduit connector shown in Fig. 9 and Fig. 10, on this conduit connector is attached a half-shell of an additional external package body, And also attached to the medium conduit with additional packaging and heating device,

Figure 12: Cutaway view according to plane XII-XII of Figure 11, with two half-shells of the encapsulation,

Figure 13: Side view of an assembled media conduit according to the invention sectioned section by section,

Figure 14: Side view of the assembled media conduit corresponding to Figure 13, and

Figure 14a, 14b: Two equivalent circuit diagrams for the circuit connection of the heating wire and the heating conductor,

Figure 15: A perspective view of a fluid conduit according to the invention,

Figure 16: Sectional view cut along the line II-II shown in Figure 15,

Figure 17: Diagram of a heating element according to one embodiment of the invention,

Figure 18: Illustration of a catheter and heating element according to another embodiment of the invention.

In the different figures in the drawings, the same components are provided with the same reference signs.

Detailed ways

制成的一体式成型件。所述连接头2具有至少一个用于与介质导管4(仅显示在图7和图11中)或与任意的未显示在图中的成套设备相连接的连接段6。进一步地，所述连接头具有与连接段6对置的另一个连接段8，该连接段8以公知的形式例如以用于可拆卸的插塞连接的套管件(Muffenteil)形式构造。所述连接段8当然也可以被构造成插接段。The catheter connector 1 according to the invention comprises a connection head 2, preferably in the form of a plastic, in particular a fibre-reinforced polyamide such as PA6.6 GF30 or PA12 GF30

One-piece molded parts. The connection head 2 has at least one connection section 6 for connection to a medium line 4 (shown only in FIGS. 7 and 11 ) or to any other assembly not shown in the figures. Furthermore, the connection head has a further connection section 8 opposite the connection section 6 , which is designed in a known manner, for example in the form of a sleeve for a detachable plug connection. The connecting section 8 can of course also be designed as a plug-in section.

In the described preferred embodiment, the connection head 2 is configured as an angle connector, wherein the connection sections 6 and 8 comprise a corner at an angle, for example a right angle (90°), to their connection axis. The connecting sections 6 , 8 are here connected via a transition section 10 which has an integrated fluid channel 11 which can only be seen in FIGS. 8 , 11 and 12 .

Within the scope of the present invention, the connector 2 can also be any other structure different from the shown example, for example, it can be designed as a T-shaped joint (T-Stück) or with 3 or more The distribution joint (Verteilerstück) structure of the connecting section can also be designed as a straight adapter (Durchgangverbinder) structure, and can also be designed as an elbow joint (Winkelverbinder) with any angle of the connecting axis different from a right angle (90°). ) (such as V-joints) or other similar structures.

According to the invention, the connection head 2 has an electric heating device 12 at least in the section of its transition section 10 , which is designed to surround the fluid channel 11 radially or in the circumferential direction. The conduit connector 1 according to the invention is therefore particularly suitable for conduits in motor vehicles for conveying media at risk of freezing, such as water or urea. The term "transition section" 10 refers to the area of the conduit connector 1, more precisely the connection head 2, which is still "free" after the connection of the conduit 4 and/or to the complete device and can thus be A heating device 12 is arranged on it.

并且至少延伸在过渡段10的区域之上。此外，如在图1、2以及4至7中所示的，连接头2的外侧具有一定的成型元件，这些成形元件用于引导并固定设置在外侧的加热丝14。作为成形元件可以设计成向外突出的附加物16或者说肋条和/或例如槽型的凹陷18(图4)。所述加热丝14的延伸方式与成型元件16、18的结构和布局无关，其可以比如曲折状地或者蜿蜒状地延伸，以避免在电流流动时产生线圈效应(Spulenwirkung)；进一步地可参看图1和2。作为替代的方案，所述加热丝14也可以以线圈方式包绕在连接头2的外部，见图10至12。这种方案在图4中通过相应的例如此处的槽型凹陷18的螺旋线状的延伸而得到了一定程度上的体现。这里，可以有利地在连接头2的内部区域安装第二个不能看到的包围住所述流体通道的绕组线圈，使得外部加热丝14上流通的电流在该内置的绕组线圈中产生感应电流。As first shown in FIGS. 1 and 2 , the heating device 12 can be designed as at least one electric heating wire 14 (resistance wire), which is arranged in a substantially uniform planar distribution.

And extend at least over the region of the transition section 10 . Furthermore, as shown in FIGS. 1 , 2 and 4 to 7 , the outside of the connecting head 2 has certain profiled elements which serve to guide and fix the heating wires 14 arranged on the outside. Outwardly protruding additions 16 or ribs and/or groove-shaped depressions 18 ( FIG. 4 ), for example, can be designed as profiled elements. The heating wire 14 runs independently of the structure and layout of the profile elements 16, 18, which can, for example, run meander-like or meander-like in order to avoid coil effects (Spulenwirkung) during current flow; see further Figures 1 and 2. As an alternative, the heating wire 14 can also be wrapped around the outside of the connector 2 in a coil, see FIGS. 10 to 12 . This approach is represented to a certain extent in FIG. 4 by the corresponding helical extension of the groove-shaped recesses 18 , for example here. Here, a second, invisible winding coil surrounding the fluid channel can advantageously be mounted in the inner region of the connection head 2 , so that the current flowing through the external heating wire 14 induces a current in this inner winding coil.

The said externally arranged heating wires 14 can be covered with an insulating coating, for example consisting of powdered varnish or the like. The cover layer can also be a dip coating. With the above-mentioned insulating coating, the heating wire 14 itself can be used without insulation.

As an alternative, the heating wire 14 can also be embedded (built into) the material of the connection head 2 made of plastic. In this connection reference is made to FIG. 8 , in which the tube 20 is surrounded by the heating wire 14 and inserted into an injection molding tool (Spritzwerkzeug). The tube 20 equipped with the heating wire 14 can then be formed in any desired manner from plastic by injection molding. The ends of the winding wires 14 are drawn out so as to be connected to a power source. The pipe piece 20 can be made of plastic, but in order to have good thermal conductivity and thus be able to conduct heat inwardly into the fluid channel 11 , the pipe piece 20 can also be made of metal.

In the embodiment variant (Ausführungsvariante) shown in FIG. 3 , on the smooth, eg cylindrical outer surface 22 of the connection head 2 , not shown in the figure, for example in the form of a glued-on heating film or an embossed heat-conducting track heating parts.

As a further variant of the embodiment, the heating device 12 can also be formed from the material of the connection head 2 which itself has the ability to conduct electricity.

In order to achieve higher thermal conductivity, the plastic material of the connector 2 made of plastic may contain certain filler materials to improve thermal conductivity. Particles of aluminium, aluminum oxide, glass fibers and/or carbon fibers are suitable as filler material.

As first shown in FIG. 7 , the connection head 2 can be enclosed by an outer encapsulation. The structure shown in FIG. 7 involves a housing 24 consisting of two parts, namely two symmetrical half-shells 24a, 24b (cf. FIGS. 11 and 12 ), of which only the One half shell 24a of the housing. Here, said half-shells 24 a , 24 b can advantageously be connected to each other by means of complementary snap-in parts 26 .

Optionally, the entire connection head 2 can also be injection molded together with a housing as a package. Furthermore, so-called shrink tubes, rubber tubes or the like can also be provided as encapsulation. By means of the enclosure, a certain volume of air can be contained between the enclosure and the connector, so that the heat will be evenly distributed and of course also isolated from the outside. The external coating or encapsulation can have the effect of external heat insulation. Furthermore, the plastic (without thermally conductive filler material) should consist of a material with the lowest possible thermal conductivity.

In the case of an externally mounted heating wire 14 , the conductor ends are preferably fastened by snap-in connections so that they protrude outwards for connection.

In the constructions shown in FIGS. 9 to 12 , the helical extension of the outer appendage 16 forms a groove for receiving the heating wire 14 , which also extends in a corresponding helical shape. At this time, according to FIG. 9, the heating wire 14 starts from the first wire end 14a installed on the outer surface area of the connecting section 6, extends helically through the transition section 10 area, and then turns back axially according to FIG. 10, thus forming The second wire end 14b of the second wire end 14b is also located in the outer surface area of the connecting section 6, and the second wire end 14b can preferably be arranged approximately diametrically opposite to the other wire end 14a. In this way, the wire ends 14 a , 14 b can be electrically connected to a connecting wire or advantageously to a heating conductor of the medium line 4 . The heating wire 14 can thus be supplied with electrical energy (voltage, current) via, for example, the helical heating conductor of the medium line 4 .

The power of the heating device 12 can be set at 3 to 20 watts, and the length of the heating wire 14 can be set up to, for example, as long as 200 mm. For a connector 2 with a fluid channel 11 having an internal volume in the range of 0.1 cm ³ to 1.0 cm ³ , a suitable power factor is 1 to 15 Watt/cm ³ . The heating wire 14 can be designed with a negative temperature coefficient (NTC) or a positive temperature coefficient (PTC). A suitable specification for the supply voltage is 10 to a maximum of 14 volts.

The connecting sections 6 can be configured as connecting mandrels (Anschlussdorn) for direct plugging into the medium line 4 (see here the structures according to FIGS. Insert the rod in the socket (Fig. 3 and Fig. 6).

According to FIG. 7 and FIGS. 9 to 11 , the connection section 6 can also be configured as a special hollow-cylindrical connection for direct insertion of the medium conduit 4 . Here, the media line 4 is preferably fastened to the connecting section 6 in a materially bonded manner, for example by gluing or welding. For welding by means of a laser beam, the connecting section 6 can be formed at least partially from a laser-transparent material.

As explained further in the example of the connection section 8 , the connection section 8 can also be designed as a plug socket for receiving a plug rod. Here, if a plug connection is involved, any means (Mittel) can be used for locking, in particular detachable locking, of the plug connection part. For further details, please refer to the examples shown in FIG. 11 and FIG. 12 .

As already shown further in FIGS. 7 and 11 , in combination with the encapsulation, in particular in combination with the encapsulation in the structure as housing 24 , as well as in the media conduit 4 itself, it is also possible In the case of heating, it is advantageous to equip the media conduit 4 with an additional packing 27 , which can be in the form of a corrugated tube surrounding the conduit 4 as shown, for example. The encapsulation 27 serves for mechanical protection and thermal insulation for at least one heating conductor 29 extending helically over the medium line 4 . Here, the packing 27 extends all the way into the housing 24 and stops a short distance before approaching the connection section 6 . In this context, the housing 24 can have an extended chamber 28 (Kammer) for accommodating not shown heating wire ends 14a, 14b and the respective ends of the heating conductor 23 of the medium conduit 4. Electrical connections.

In the packing 27 , ie the leading region of the corrugated tube, the outer shell 24 is surrounded on its inner wall by ribs 25 which extend into the corrugated troughs 31 of the corrugated tube. According to the invention, a form-fitting connection is formed between the housing 24 and the package 27 . Furthermore, it can be seen in FIG. 7 that there is likewise a positive connection between the housing 24 and the connection head 2 . Furthermore, the housing 24 has an inner tongue groove 35 (Innennut) in the area of the connection section 8 of the connection head 2 for the insertion of a ring-shaped band 36 (Ringbund) of the connection head 2 .

As further shown in FIG. 11 , the half-shells 24a, 24b of the housing 24 can also be fixed by means of external, for example differently configured clamping rings (Spannschelle), tensioning ropes (Spanndraht) or spring clips ( Halteelement) 30 are connected together.

The invention also includes an assembled media conduit as shown in FIG. 13 . Such an assembled medium line comprises an inner conveying pipe 4 a around which the heating conductor 29 already shown in FIG. 7 is mounted. The delivery tube 4 a with the heating conductor 29 is surrounded by an outer packaging 27 . The outer packaging 27 is preferably made as a corrugated tube. And it can be a corrugated tube in the shape of a ring or a helical wave. The two ends of the medium line 4 configured in this way are each connected to the line connectors already explained in FIGS. 1 to 10 . In the illustrated exemplary embodiment, a conduit connector 1 designed as an elbow plug is fastened at one end, while a straight plug connector 1 is designed as conduit connector 1 at the other end. In the illustrated example, the ends of the catheter connector 1 are designed in the form of sleeves, but they can also be designed in the form of plugs.

As shown in FIG. 13 , the packing 27 is introduced into the housing 24 of the catheter connector 1 and engages with said housing 24 in a form-fitting manner. A heating conductor 29 surrounding the delivery tube 4 a is wound helically around said delivery tube 4 a and is formed, in particular, by two coil windings 29 a, b running in parallel. The two coil windings 29a, b can consist of one continuous wire, in which case the two connection ends are at the same end of the delivery tube. Of course, they could also be formed from two separate wires. The heating conductor 29 is preferably wrapped with an adhesive tape so that it can be fastened to the delivery pipe 4a. Alternatively, the heating conductor 29 can also be arranged on the delivery pipe 4 a by means of an outer lacquer layer or an adhesive layer. Especially when it is desired to generate different thermal power along the conveying pipe, the coil number density and/or the electrical resistance can be changed along the conveying pipe 4a, so as to obtain a section-by-section different electrical power, for example, in the area of the siphon or the affected area of the medium conduit. Areas of air impingement where the tendency of the medium to solidify is increased. The connector 2 present in the catheter connector 1 can be connected to the delivery tube 4a by means of a plug-in connection, although of course it is also within the scope of the invention that the delivery tube 4a is connected to the connector 2, for example in the form of Welded or bonded materials are joined together.

Furthermore, it is also expedient if a defined air gap is formed between the delivery tube 4a and the catheter package 27 . This can be caused, for example, by the ring bellows itself, or by spacers or the like mounted inside the bellows. In terms of better sealing, the following solution is also advantageous according to the invention, that is, between the housing 24 of the catheter connector 1 and the connection head 2, especially between the catheter packaging 27 and the catheter connector 1. The connection area introduces the potting compound 30 . On the one hand, the potting compound 30 provides mechanical protection, but on the other hand it can also be used to improve the IP protection by sealing. The arranged potting compound 30 is marked in FIG. 13 by a dotted line. In this case, it is only partially filled at the transition from the elbow plug 1 to the delivery tube 27 , whereas in a straight plug connection the potting compound 30 is formed not only to the delivery tube 27 . The transition area of the tube 27 is also formed as an outer packaging body at the same time.

Especially when the assembled duct according to the invention has to be laid in the vicinity of heat-generating parts, then it will be expedient that the assembled duct is completely or partially surrounded by a heat-insulating layer over its entire length around. The thermal insulation layer can be formed, for example, from a film, such as a metallized film that reflects heat radiation. Furthermore, in order to provide mechanical protection and for example to prevent vibrations, a cushioning layer, for example made of sponge-like rubber or the like, can also be installed, in particular around the outer packaging 27 . It is of course also possible to install an additional external thermal insulation layer. In FIG. 14 , the arrangement of the outer packaging or protective layer or cover is shown section by section in section through the outer layer 27 a. FIG. 14 depicts how the heating wire 14 of the catheter connector 1 and the heating catheter 29 of the delivery tube 4a are electrically connected. As depicted in Figure 14a, the heating wires of the catheter connector 1 are conductively connected in series with the winding coils of the coil windings 29a and b respectively, and the connecting ends of the two series circuits are connected at the two catheter connectors 1 Lead out from the top, so as to realize the connection with the power supply and/or other connections. Here, R _WST refers to the electrical resistance of the heating wire winding 14 of the catheter connector 1 , which in the example shown is constructed in the form of an elbow plug, and R _1L is the electrical resistance of the wire winding 14 surrounding the delivery tube 4 a. Resistance of a set of wires of the coil winding 29a,b. R _GST is the resistance of the heating wire 14 of the linear plug connector, R _2L is the resistance of the other winding wires of the coil windings 29 a, b surrounding the delivery tube 4 a. The connections (Anschlüsse) located on the outside of the conduit connector 1 are marked A1 and A2 respectively. Another connection scheme is shown in Figure 14b. Here, the heating wire 14 of the catheter connector 1 and the coil windings 29a, b surrounding the delivery tube 4a are connected in such a way that all wires are electrically connected in series. The connections of the series connection circuit to the power supply are led out in the region of the conduit connector 1 and here the resistance of the wires is marked the same as in FIG. 14 a . There is only one external line connector A1 here. The resistance values of the individual resistors of one embodiment of an assembled catheter according to the invention may differ from those of another embodiment, depending on the respective desired heating power.

In addition, it is also expedient to reduce the winding distance of the heating wire winding 14 in the end region of the delivery tube 4 a. In another arrangement, a further winding can be added to the circumferentially extending winding 14 of the heating wire in the region of the pipe end of the delivery pipe 4a in order to provide an additional usable wire length. This allows the wire to be pulled outward from the end of the duct when wiring.

Another suitable embodiment of the heating conductor according to the invention is shown in FIGS. 15 to 18 , in which the heating conductor is designed as a planar heating element 40 .

As shown in FIG. 15, the heatable medium conduit according to the present invention includes the built-in delivery pipe 4a and an electric heating component 40 installed on the surface of the delivery pipe. A protective cover 41 may be installed around the installed electric heating component 40 along the circumference. The delivery tube 4a is advantageously made of plastic. The outer protective cover 41 can be formed by an adhesive tape loop or by a sprayed coating or a plastic shrink tube, which forms an outer protection against damage and moisture. Of course, there may also be a corresponding coating on the outwardly drawn surface of the heating element 40 . In addition, the heatable medium line is preferably surrounded by a corrugated tube or a protective tube or a protective jacket and, if possible, encloses a large-area air gap.

As shown in FIGS. 16 and 17 , the heating element 40 according to the invention is configured as a planar heating element. The planar heating element 40 is strip-shaped and, as shown in FIG. 16, is arranged around the delivery tube 4a in such a way that it extends in the longitudinal direction of the delivery tube 4a and its longitudinal edges 46 overlap each other. Alternatively, the longitudinal edges 46 can also touch each other.

An alternative is shown in FIG. 18 , the strip-shaped planar heating element 40 being wound helically around the delivery pipe 4 a. Here, the following two forms are all possible, that is, or select the structure that the spiral wound bodies overlap each other as shown in the figure, or select the longitudinal edges 46 of the strip-shaped planar heating element 40 to contact each other. winding structure.

It is also within the scope of the present invention that the planar heating element 40 according to the present invention is formed at only one position, or that multiple planar heating elements 40 can be arranged surrounding each other around the delivery pipe 4a in order to increase the heat output. locations.

47，在该衬底47上固定有电加热导体48。所述电加热导体48与安装在衬底47上的接触导线49可导电地连接在一起。有利地，所涉及的衬底47可由纺织的羊毛材料、丝织物或纤维织物构成。然而，所述衬底47同样也可由塑料制成的泡沫材料或者由上述材料的组合物构成。所述电加热导体48以波纹状或曲折状和/或网状结构安放在衬底47上。有利地，电加热导体48由碳纤维构成。应用碳纤维制造电导体具有以下优点：重量较轻而抗拉强度很高，并且导电性能良好；而且因此可透过伦琴射线，这点对控制检查提供了方便。另外，其对化学物质稳定，并具有高的耐热性。另外，碳纤维易于加工。所述电加热导体48尤其是在所述平面加热部件40的整个表面上均匀布置。所述电加热导体48的主伸展方向X适宜地沿着带状衬底47的横向延伸。所述接触导线49同样可以由碳纤维构成而且也可由金属材料制成，并且其可以呈直线状地和/或波纹状地延伸。就像在图17中所显示的那样配置多根平行延伸的接触导线49，这是有利的。在这里，所述接触导线49与所述电加热导体48的主伸展方向X交叉延伸，尤其是以与所述电加热导体48的主伸展方向X相垂直的方向延伸。进一步地可在图16和图17中看到，所述接触导线49分别安装在电加热导体48的两个末端区域或者说安装在衬底47的两个纵向边缘46的范围内。所述加热导体48与接触导线49借助于纺织的缝纫用线51以缝合的方法固定在衬底47上。在此，所述缝纫用线51的缝合方向Y沿所述加热导体48的主伸展方向X延伸。根据本发明，以下设置是适宜的，即，只在所述纺织的衬底的局部区域内特别是在重叠区域53不设置加热导体。这样就能保证在这个导体长度上具有统一的热功率。同样也可以将重叠区域53设置在所述衬底47的两条纵向边缘的旁边。A planar heating element 40 according to the invention comprises a substrate

47, an electric heating conductor 48 is fixed on the substrate 47. The electrical heating conductor 48 is electrically conductively connected to a contact line 49 mounted on the substrate 47 . Advantageously, the substrate 47 in question can consist of a woven wool material, a silk fabric or a fiber fabric. However, the substrate 47 can also consist of a foam made of plastic or a combination of the aforementioned materials. The electric heating conductor 48 is placed on the substrate 47 in a corrugated or zigzag and/or mesh structure. Advantageously, the electrical heating conductor 48 consists of carbon fibers. The use of carbon fiber to manufacture electrical conductors has the following advantages: light weight, high tensile strength, and good electrical conductivity; and therefore transparent to Roentgen rays, which provides convenience for control inspections. In addition, it is stable against chemicals and has high heat resistance. In addition, carbon fiber is easy to process. The electrical heating conductors 48 are in particular arranged uniformly over the entire surface of the planar heating element 40 . The main direction of extent X of the electrical heating conductor 48 extends expediently in the transverse direction of the strip-shaped substrate 47 . The contact wires 49 can likewise consist of carbon fibers or also be made of metallic material, and they can run linearly and/or corrugatedly. It is advantageous to arrange a plurality of parallel-running contact wires 49 as shown in FIG. 17 . In this case, the contact wire 49 runs across the main direction of extent X of the electrical heating conductor 48 , in particular in a direction perpendicular to the main extent X of the electrical heating conductor 48 . It can furthermore be seen in FIGS. 16 and 17 that the contact wires 49 are arranged in each case at the two end regions of the electrical heating conductor 48 or in the region of the two longitudinal edges 46 of the substrate 47 . The heating conductor 48 and the contact wire 49 are fastened to the substrate 47 by means of a woven sewing thread 51 by sewing. In this case, the sewing direction Y of the sewing thread 51 extends along the main direction of extension X of the heating conductor 48 . According to the invention, it is expedient to provide that no heating conductors are arranged only in partial regions of the woven substrate, in particular in overlapping regions 53 . This ensures a uniform thermal power over this conductor length. It is likewise possible to arrange the overlapping region 53 alongside the two longitudinal edges of the substrate 47 .

In order to ensure a simple mounting of the planar heating element 40 on the delivery pipe 4a, the substrate 47 is coated with a heat-resistant adhesive layer 54 (Haftkleber) on its back facing away from the heating conductor 48 Advantageously, this ensures that the heating element 40 is closely placed on the surface of the delivery pipe 4a, thereby enabling good heat conduction performance. It is advantageous for the substrate 47 to have a hydrophobic function. The electrical contact line 49 is preferably flexible and runs between the heating conductor 48 and the substrate 47 . The contact wires 49 are led out at both ends thereof or preferably only at one end of the pipe 1 according to the invention by means of a pair of connecting wires 52 for connecting different pipes in series. It is likewise also possible to lead a connecting line 52 from each of the two ends.

It is also within the scope of the invention to embed the contact wires 49 in the textile substrate 47 . The electrical heating conductors 48 can be arranged to run parallel to one another or to be formed overlapping one another. By means of such an overlapping installation of the heating conductors 48, said heating conductors 48 are brought into uniform contact with the entire plane and the current is evenly distributed, so that even in the event of a partial failure of a heating conductor there is no effect on the heating power. actual impact. In particular, when there are several contact wires 49 running in parallel, the contact wires 49 can likewise be arranged in a corrugated manner or be connected in the form of a mesh, and a reliable contact with the heating conductor 48 can likewise be achieved.

The invention is not restricted to the exemplary embodiments already described and described above, but also includes all structures which perform the same function within the meaning of the invention. In addition, the present invention is not limited to the combination of features defined in claim 1 so far, but can also be defined as any other combination of certain features of the individual features that have been fully disclosed. This means that, in principle and in practice, every single feature stated in claim 1 can be omitted, or that every single feature stated in claim 1 can be omitted elsewhere in the application. Individual features disclosed are superseded. In this regard, claim 1 can only be understood as an initial attempt to formulate an invention.

Claims (50)

1. A conduit connector (1) for a medium conduit comprising a connection head (2) having at least one connection section (6, 8) for connection to a medium conduit (4) or to a complete device ) and a transition section (10) with a fluid channel (11) adjacent to the connecting section (6, 8), characterized in that at least in the scope of the transition section (10) is designed with an electric heating device (12 ), the electric heating device at least partially surrounds the fluid channel (11). 2. The catheter connector according to claim 1, characterized in that at least one heating wire (14) is provided as a heating device (12), the heating wires (14) being distributed in a substantially uniform plane at least Extends over the region of the transition section (10). 3. The catheter connector according to claim 2, characterized in that, the heating wire (14) has an extending manner such as a meander, so as to avoid coil effects generated when current flows. 4. The catheter connector according to claim 2, characterized in that, the heating wire (14) is coiled around the outside of the connector (2), preferably within the range of the fluid channel (11) At least one other winding coil is installed in the inner area of the inner part in such a way that the current flowing on the external heating wire (14) can induce heat in this inner winding coil. 5. The conduit connector according to any one of claims 2 to 4, characterized in that the connector (2) has a molded part (16, 18). 6. The catheter connector according to one of claims 2 to 5, characterized in that the heating wire (14) itself is painted with powder paint or dip-coated separately and/or jointly with the connection head (2). layer of material consisting of an insulating coating covering. 7. The catheter connector according to one of claims 2 to 4, characterized in that the heating wire (14) is embedded in the material of the connection head (2), wherein in particular the inner tube (20) is The heating wire (14) is wrapped and formed by injection molding of plastic. 8. The conduit connector according to claim 1, characterized in that a planar heating element, in particular in the form of a heating film, is arranged as a heating device (12) on a smooth outer surface (22), for example cylindrical ). 9. The catheter connector according to claim 1, characterized in that, as the heating device (12), the connecting head (2) is made of a material which itself has electrical conductivity. 10. The conduit connector according to any one of claims 1 to 9, characterized in that the material of the connector (2) has high thermal conductivity. 11. Conduit connector according to any one of claims 1 to 10, characterized in that the connection head (2) is enclosed by an outer encapsulation (24) which is preferably configured with low thermal conductivity for thermal insulation. 12. Conduit connector according to claim 11, characterized in that said enclosure, in particular an enclosure consisting of two symmetrical half-shells (24a, 24b), is formed as a housing (24), said The two symmetrical half-shells (24a, 24b) become the two half-shells of the outer shell. 13. The conduit connector according to claim 11 or 12, characterized in that the encapsulation is also configured to enclose the end of the medium conduit (4), and preferably encloses the wrapping (26) of the medium conduit ) end. 14. The conduit connector according to any one of claims 2 to 13, characterized in that, the heating wire (14) is extended in the following manner, in order to connect with the outside and/or heat the medium conduit (4) The two ends (14a, 14b) of said heating wire (14) are mounted within the confines of one said connection section (6), preferably on its diametrically opposite sides. 15. The conduit connector according to one of claims 11 to 14, characterized in that the encapsulation has an extended chamber (28) in the connection area of the medium conduit (4) for accommodating a heating wire Electrical connection between the ends (14a, 14b) of (14) and the heating conductor ends of the media conduit (4). 16. The conduit connector according to one of claims 11 or 15, characterized in that the encapsulation (24a, 24b) is additionally configured to enclose the end of the medium conduit (4), and preferably encloses The end of the media conduit package (27). 17. The catheter connector according to any one of claims 1 to 16, characterized in that, the heating wire (14) is extended in the following way, in order to connect with the outside and/or to heat the medium catheter (4) The two ends (14a, 14b) of said heating wire (14) are mounted within the confines of one said connection section (6), preferably on its diametrically opposite sides. 18. The conduit connector according to one of claims 11 to 17, characterized in that the encapsulation has an extended chamber (28) in the connection area of the medium conduit (4) for accommodating a heating wire Electrical connection between the ends (14a, 14b) of (14) and the heating conductor ends of the media conduit (4). 19. Conduit connector according to any one of claims 11 to 18, characterized in that an air volume for heat dissipation and insulation is enclosed between the enclosure and the connection head (2), wherein the enclosure Preferably constructed of a material with low thermal conductivity. 20. The catheter connector according to any one of claims 12 to 19, characterized in that, the housing (24) and the connector (2) are connected together in a form-fitting manner. 21. The conduit connector according to one of claims 1 to 20, characterized in that at least one connecting section (6, 8) is configured as a hollow cylindrical interface for direct insertion into the medium conduit (4) The end, wherein the medium line ( 4 ) is preferably fastened in a cohesive manner, in particular by gluing or welding. 22. The conduit connector according to claim 17, characterized in that the connecting section (6) is at least partially made of a material permeable to laser beams, so that the medium conduit (4) is fixed by laser beam welding . 23. The conduit connector according to claim 1, characterized in that there is an opening (33) on the housing (24) for leading out the connecting wires to the heating device (12, 14), wherein Said opening (33) is in particular located on the joining surface of the housing (24). 24. Assembled media conduit, it comprises the conveying pipe that is installed with heating conductor (29) on the circumference and is fixed on the conduit connector that can heat at least one conveying pipe pipe end of medium conduit, it is characterized in that, described conduit connector is Catheter connector (1 ) according to one or more of claims 1 to 23. 25. The assembled media line according to claim 24, characterized in that the delivery pipe (4a) with the heating conductor (29) is surrounded by a packing (27), in particular in the form of a corrugated tube . 26. The assembled medium conduit according to claim 24 or 25, characterized in that the packing (27) is introduced into the housing (24) of the conduit connector (1) and conforms to the shape of the housing (24) fit together. 27. Assembled medium line according to one of claims 23 to 25, characterized in that the heating conductor (29) is wound helically around the delivery pipe (4a) and in particular consists of two parallel running Coil windings (29a,b). 28. The assembled medium line as claimed in one of claims 24 to 27, characterized in that the heating conductor (29) is fastened to the delivery pipe (4a) by means of an adhesive tape. 29 . The assembled medium line as claimed in claim 24 , characterized in that the heating conductor ( 29 ) is fastened to the delivery pipe ( 4 a ) by means of an outer lacquer layer or an adhesive layer. 29 . 30. Assembled medium conduit according to one or more of claims 24 to 29, characterized in that the conduit connector (2) is interconnected with the delivery pipe (4a) by a plug connection. 31. The assembled medium conduit according to one of claims 24 to 29, characterized in that the conduit connector (2) is connected to the conveying pipe (4a) by means of welding or adhesive bonding. 32. The assembled medium conduit according to one of claims 24 to 31, characterized in that a certain air gap is formed between the delivery tube (4a) and the conduit package (27). 33. Assembled media conduit according to one of claims 24 to 32, characterized in that the conduit packaging between the housing (24) and the connection head (2) and in particular within the housing (24) Introduce pouring material in the connecting range of piece (27). 34. Assembled media conduit according to any one of claims 24 to 33, characterized in that an outer thermal protection layer is installed wholly or partially. 35. Assembled medium conduit according to one of claims 24 to 34, characterized in that the conduit wrapper (27) is completely or partially surrounded by a thermal insulation layer (27a) and/or viewed over the entire length of the conduit Or a mechanical protection layer or shield (27a). 36. The assembled medium conduit according to any one of claims 24 to 35, characterized in that, the heating wire (14) wrapped around the connecting body (2) of the conduit connector (1) and the heating wire (14) wrapped around the medium The heating conductors (29) on the conduit are electrically connected in series or in parallel with each other. 37. The assembled medium conduit according to one of claims 24 to 36, characterized in that a conduit connector (1) is connected to either end of the heatable medium conduit (4), and the delivery pipe (4a) is Two coiled windings (29a, b) extending in parallel are wound, wherein the heating wire (14) of the catheter connector and the heating wire of the coiled winding (29a, b) are electrically connected in series and are used to connect The connection end of the power supply of the external series circuit is drawn out within the range of the conduit connector (1). 38. The assembled medium conduit according to one of claims 24 to 36, characterized in that the heating wire (14) of the conduit connector (1) is electrically connected to one of the coil windings (29a, b) respectively connected in series, and the connection ends of the two series circuits are drawn out from one of the two conduit connectors (1) respectively, so as to be connected to the power supply and/or to perform other connections. 39. Assembled medium conduit according to one of claims 24 to 38, characterized in that the heating conductor (29) is installed or constructed along the delivery pipe (4a) in such a way that its electrical resistance is different from section to section , resulting in different thermal powers section by section. 40. A medium line, in particular for use in an assembled medium line, having the features of one of claims 24 to 36. 41. The medium line according to the preamble of claim 40, characterized by a heating element (40) which is designed as a planar heating element. 42. The medium conduit according to claim 40, characterized in that the planar heating element (43) is configured as a strip and wound helically around the conveying pipe (4a), or the planar heating element (43 ) wraps around the delivery pipe (4a) in such a way that its longitudinal edges (46) overlap. 43. The medium conduit according to claim 41, characterized in that the planar heating element (43) is configured as a strip, which completely or partially surrounds the conveying pipe (4a) in a manner extending in the longitudinal direction of the conveying pipe (4a) Around (4a), preferably, the longitudinal edges (46) of said planar heating elements (43) overlap each other. 44. Media conduit according to one of claims 41 to 43, characterized in that the planar heating element (43) is covered by an outer protective cover (44). 45. The medium conduit according to one of claims 41 to 44, characterized in that the planar heating element (43) comprises a substrate (47) on which the electric heating conductor (48) is fastened And it is conductively connected with the contact wire (49) installed on the substrate (47). 46. The medium conduit according to claim 45, characterized in that the substrate (47) consists of a woven fleece material, a silk fabric or a textile and/or a foam material made of plastic. 47. The medium conduit according to any one of claims 41 to 46, characterized in that, the electric heating conductors (48) are placed parallel to each other and/or overlap each other in a wave or zigzag shape, or in a network structure. On the base (47), the electrical contact wires (49) run in straight lines and/or in waves or in the form of a mesh, and preferably a plurality of parallel running contact wires (49) are arranged. 48. The medium line according to one of claims 41 to 47, characterized in that the contact wire (49) runs crosswise to the main direction of extension (X) of the electric heating conductor (48), in particular The main direction of extent (X) of the electrical heating conductors (48) runs perpendicularly, while the main direction of extent (X) of the electrical heating conductors (48) extends in the transverse direction of the strip substrate (47). 49. The medium conduit according to one of claims 41 to 48, characterized in that the heating conductor (48) and the contact wire (49) are fastened to the lining by means of a woven sewing thread (51) by means of sewing. and the sewing direction (Y) of the sewing thread (51) extends along the main stretching direction (X) of the heating conductor (48). 50. The medium conduit according to claim 41, characterized in that the substrate (47) is coated with a heat-resistant adhesive layer on its back facing away from the heating conductor (48), and In particular, the contact wire (49) extends between the heating conductor (48) and the substrate (47).

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