WO2024052382A1

WO2024052382A1 - Liquid pipe device, liquid pipe and method for producing a shell part for the liquid pipe device

Info

Publication number: WO2024052382A1
Application number: PCT/EP2023/074399
Authority: WO
Inventors: Yannick Goos
Original assignee: Eto Magnetic Gmbh
Priority date: 2022-09-09
Filing date: 2023-09-06
Publication date: 2024-03-14
Also published as: DE102022122996A1; WO2024051966A1

Abstract

The invention is based on a liquid pipe device (54) for conducting a liquid, in particular a cooling liquid of a cooling circuit (10), with at least one first shell part (12) and with at least one second shell part (22) which, in conjunction with the first shell part (12), forms a pipe portion (16) which is provided for guiding liquid and constitutes at least part of a liquid pipe (14), wherein the pipe portion (16) has at least one nonreturn valve (18). It is proposed that the first shell part (12) completely encloses a sealing seat (20) of the nonreturn valve (18).

Description

Liquid line device, liquid line and method for producing a shell part for the liquid line device

State of the art

The invention relates to a liquid line device according to the preamble of claim 1, shell parts according to claims 19 and 20, a liquid line according to claim 21, a vehicle according to claim 22 and a method according to the preamble of claim 23.

There is already a liquid line device for conducting a liquid, with at least a first shell part and with at least a second shell part, which, in conjunction with the first shell part, forms a line section intended for a liquid line and representing at least part of a liquid line, the line section having at least one check valve has been proposed. The check valves of these known liquid line devices do not have a continuous sealing seat, but rather an interrupted sealing seat, half of which is formed by one of the shell parts, or a sealing seat that must be mounted as a separate component in a liquid line. Therefore, in this case, separate assembly steps are necessary, in particular assembly steps that seal the assembly point or the sealing seat.

The object of the invention is, in particular, to provide a generic device with advantageous properties in terms of efficiency, in particular manufacturing efficiency. The task will be solved according to the invention by the features of patent claims 1 and 19 to 23, while advantageous refinements and developments of the invention can be found in the subclaims.

Advantages of the invention

The invention is based on a liquid line device for conducting a liquid, in particular a coolant of a cooling circuit, with at least a first shell part and with at least a second shell part, which, in conjunction with the first shell part, has a line section intended for a liquid guide and representing at least part of a liquid line forms, wherein the line section has at least one check valve.

It is proposed that the first shell part completely encloses/has a sealing seat of the check valve, in particular completely surrounding an inner circumference of the line section. This can advantageously increase production efficiency. Advantageously, a separate sealing seat assembly and/or sealing seat can be dispensed with. This can advantageously increase cost efficiency. Components and/or process steps for production are advantageously saved. Modularity of cooling circuits can be advantageously improved. In particular, the liquid line device is designed as a coolant line device of a cooling circuit, for example of a vehicle. In particular, the liquid is designed as a cooling liquid, for example as water, as a cold mixture or as thermal oil. In a cooling circuit, heat in particular is transported away along a temperature gradient by a heat transfer medium (the coolant). The cooling circuit is preferably designed as a vehicle cooling circuit. The first shell part in particular forms a lower shell. The second shell part in particular forms an upper shell. The shell parts preferably each form partial circles of an inner circumference of a liquid line comprising the liquid line device, in particular of the line section. It is particularly conceivable that, in addition to the first shell part and the second shell part, there are further shell parts, which also each form a partial circle of an inner circumference of the liquid line, in particular of the line section. However, the liquid line is preferably formed entirely by the first shell part and the second shell part. In particular, the shell parts are provided in combination to ensure loss-free fluid guidance, particularly within the line section. In particular, the shell parts are designed differently from one another. In particular, the line section forms part of a pipeline. A “check valve” is intended to mean, in particular, a line component that allows the flow of liquid, in particular at least within the line section, in only a single direction. In particular, the check valve is designed as a ball check valve. However, alternative known check valve designs are also conceivable. In particular, the sealing seat is designed as a surface which seals at least the line section completely in a liquid-tight manner by seating a sealing element, such as a sealing ball. The line section is preferably free of line branches. “Provided” is intended to mean, in particular, specifically programmed, designed and/or equipped. The fact that an object is intended for a specific function should be understood in particular to mean that the object fulfills and/or executes this specific function in at least one application and/or operating state. In particular, the second shell part completely covers the first shell part. In particular, in the assembled state of the shell parts, seen in a top view of the first shell part from a direction in which the part of the line section formed by the first shell part is open, the first shell part is completely covered and/or covered by the second shell part.

It is conceivable that the completely circumferential sealing seat is mounted on the first shell part, but it is preferably suggested that the Sealing seat is formed in one piece or monolithically with the first shell part. As a result, the number of components can advantageously be kept low. A high level of tightness can advantageously be achieved. Advantageously, simple production can be made possible in a particularly few production steps. “One-piece” is intended to mean, in particular, a material connection, such as through a welding process, melting process and/or adhesive process. “Monolithic” is to be understood in particular as being integrally formed, for example through production from a single casting and/or through production in an injection molding process. In particular, the first shell part and/or the second shell part is made of a plastic, in particular a hard plastic. However, it is also conceivable for the first shell part and/or the second shell part to be made of a metal. In particular, the shell parts are each made from similar materials or from the same material. When made from a similar material, for example, a base plastic, e.g. polyketone, polyamide, etc., can be the same, but with different glass fiber contents (e.g. PK GF30 and PK GF15), different amounts or different types of additives to achieve different laser transparency or be provided with different colors, etc.

Furthermore, it is proposed that the sealing seat forms a sealing surface, preferably continuous and/or uninterrupted and/or lying in a common plane, which runs completely around an inner circumference of the liquid line formed by the line section. This can advantageously guarantee a high level of tightness of the check valve.

Furthermore, it is proposed that the line section, seen at least in an opening direction of the check valve and / or in a permitted flow direction through the check valve, is delimited behind the check valve by the shell parts in such a way that the first shell part lies along a first section of the check valve located behind the check valve Line section a first part of a circumference of the liquid line in the first section of the Line section limited and that the second shell part along the same first section of the line section delimits a second part of the circumference of the liquid line, which is different from the first part of the circumference of the liquid line. As a result, the number of components can advantageously be kept low. A high level of tightness can advantageously be achieved. Advantageously, simple production can be made possible in a particularly few production steps. In particular, the opening direction of the check valve is formed by the direction in which the sealing element, for example the sealing ball of the check valve, is moved when switching from a closed state of the check valve to an open state of the check valve. In particular, the first section of the line section lies in the intended flow direction of the line section (permitted by the check valve) downstream of the check valve and/or downstream of a second section of the line section.

If, in addition, the line section, at least in the opening direction of the check valve and / or in the permitted flow direction through the check valve, is delimited in front of the check valve by the shell parts in such a way that the first shell part forms a first part along the second section of the line section located in front of the check valve a circumference of the liquid line in the second section of the line section and that the second shell part along the same second section of the line section delimits a second part of the circumference of the liquid line, which is different from the first part of the circumference of the liquid line, a number of components can advantageously be kept low . A high level of tightness can advantageously be achieved.

Advantageously, simple production can be made possible in a particularly few production steps. In particular, the second subsection of the line section lies in the intended flow direction of the line section (permitted by the check valve) upstream of the check valve and/or upstream of the first Part of the line section. The shell parts can in particular be connected to one another in a material-locking manner (e.g. by an adhesive, by welding or by a silicone), in a non-positive manner (e.g. by a press fit) and/or in a form-fitting manner (e.g. by latching elements), preferably in a liquid-tight manner .

Furthermore, it is proposed that the liquid line along the line section, with the exception of the sealing seat, is continuously delimited by at least the two shell parts, preferably exclusively by the two shell parts. As a result, the number of components can advantageously be kept low. Preferably, the same shell parts limit the liquid line upstream and downstream of the check valve and/or the completely circumferential sealing seat. In particular, the entire line section, preferably the entire liquid line, is limited only at the check valve(s) in the area of the sealing seat for a short distance by only one of the shell parts, while it is preferably always through in the entire rest of the line section, preferably the entire liquid line at least two, in particular exactly two, interconnected shell parts is limited.

In addition, it is proposed that the check valve comprises a movably mounted sealing element, in particular within the line section, preferably within the first section of the line section, which is intended to seat sealingly on the sealing seat in at least one operating state. This can advantageously achieve a good and/or dynamic sealing effect, particularly in the event of backflow. In particular, the sealing element is designed as the sealing ball, preferably as an elastomer ball. In particular, the sealing element is arranged completely in the interior of the liquid line and/or completely surrounded by the line section, in particular the two shell parts. In particular, the sealing element is arranged to be movable essentially parallel to an intended flow direction within the line section. It is also proposed that the second shell part forms an escape space for the sealing element of the check valve, which is movably mounted in particular within the line section, at least partially, preferably at least to a large extent. This can advantageously enable the check valve to function reliably. Advantageously, complete integration of the check valve into the line section, in particular consisting only of the two shell parts, can be made possible. In particular, the alternative space, viewed perpendicular to an intended flow direction of the line section, has a larger cross section than the rest of the line section, in particular in subregions of the line section directly adjacent to the alternative space. This advantageously allows a movement space for the sealing element to be defined. In particular, the escape space forms a sealing element contour, preferably a spherical contour, from, to and/or from. A “major part” should be understood to mean in particular 51%, advantageously 66%, preferably 75%, preferably 85% and particularly preferably 95%.

If the escape space is at least partially formed by a bulge in the liquid line, which protrudes over a remainder of the liquid line within the line section in a direction perpendicular to an intended, in particular central, flow direction of a liquid guided in the liquid line, complete integration of the Check valve can be made possible in the line section, in particular consisting only of the two shell parts. A flow influence on the liquid flow within the line section can advantageously be minimized, in particular by the flow not being guided around the sealing element, but under the sealing element. In particular, the bulge protrudes perpendicularly above the liquid line outside of an area containing the check valve by at least 20%, preferably by at least 30% and preferably by at least 50% of an average inside diameter of the liquid line. In particular, the bulge protrudes vertically above the liquid line by at least a third of an outer diameter of the sealing element, preferably by approximately half an outer diameter of the sealing element.

Furthermore, it is proposed that the first shell part has at least one sealing element guide element, which is intended to ensure a movement, in particular a movement trajectory, of the sealing element of the check valve, which is movably mounted in particular within the line section, between an open operating state of the check valve, in which the sealing element in particular is lifted from the sealing seat, and a closed operating state of the check valve, in which the sealing element sits in particular on the sealing seat. As a result, a high level of reliability of the check valve can advantageously be achieved. Advantageously, the high reliability can be achieved without the need for additional restoring components, such as a return spring. However, configurations with a return spring are also conceivable as an alternative. The sealing element guide element is formed in one piece or monolithically with the first shell part. The sealing element guide element is intended to ensure that the sealing element reliably hits the sealing seat every time. The sealing element guide element is designed in particular as a sealing ball guide. It is conceivable that the first shell part has more than one sealing element guide element, for example two, three or four sealing element guide elements, which are preferably at least essentially identical. It is conceivable that the second shell part has one or more further sealing element guide elements on a side of the escape space opposite the sealing element guide element of the first shell part. Alternatively, the second shell part can also be designed to be free of sealing element guide elements.

If the sealing element guide element is relative to one

Flow direction through the check valve oblique guideway for the sealing element, its gravity can advantageously support the guidance of the restoring movement of the sealing element. A high level of reliability of the check valve can advantageously be achieved. The check valve therefore advantageously has a self-closing function. In particular, when the liquid line is depressurized, the sealing element automatically rolls along the guideway into the sealing seat due to its weight and thereby closes the check valve. This can be useful for various reasons, for example to prevent an unwanted backflow/counterflow when pressure builds up, for example when starting an engine, or to prevent an unwanted flow after a pressure drop, for example after an engine stop, or to prevent a possibly unwanted flow Mixing of coolant flows (warm/cold) at similar pressure conditions before and after the check valve by closing the valve due to the weight of the sealing element, in particular the sealing ball. An angle that the oblique guideway forms with the average flow direction of the line section is preferably approximately 30°. Alternatively, the guide track could also run at least essentially parallel to the mean flow direction. The angle of the guideway can therefore assume values between at least 0° and 50°, preferably between 5° and 50° if the guideway is designed at an angle.

If the guideway, viewed in the flow direction through the check valve, is designed to rise relative to the flow direction through the check valve, an, in particular automatic, guidance of the sealing element to the closed state of the reset valve can advantageously be achieved. In particular, the sealing element, viewed in the flow direction through the check valve, is arranged behind the sealing seat, in particular in the first section of the line section. In particular, the sealing element guide element, viewed in the flow direction through the check valve, is arranged behind the sealing seat, in particular in the first section of the line section. In addition, it is proposed that the sealing element is stored captively in the line section through an interaction of the bulge of the second shell part and the sealing element guide element of the first shell part, in particular at least in a direction pointing away from the sealing seat, preferably in the first subsection of the line section

If the first shell part and/or the second shell part are designed as injection molded parts, in particular as plastic injection molded parts, a simple one-piece and/or monolithic production can advantageously be made possible.

Furthermore, it is proposed that at least the sealing seat, in particular the entire check valve, is designed to be free of O-rings or comparable seals formed separately from the shell parts and/or that the check valve is completely formed by the first shell part, the second shell part and the sealing element . As a result, the number of components can advantageously be kept low and, in particular, production can be simplified and made more cost-effective.

If the check valve is also completely formed by the first shell part, the second shell part and the sealing element, a particularly efficient reduction in the number of components can advantageously be achieved. The shell parts, in conjunction with one another, preferably form a pipeline whose cross section can have any shape. For example, one of the shell parts, e.g. the first shell part, could form a flat boundary of the pipeline while the other shell part, e.g. the second shell part can form a curved boundary of the pipeline, for example forming a partial circle shape.

Furthermore, it is proposed that the first shell part comprises at least one inlet of the liquid line and/or at least one outlet of the liquid line, preferably completely, preferably formed in one piece. As a result, a high level of tightness of the liquid line can advantageously be achieved. In addition, the number of components can advantageously be kept low. The influx and/or the process is in particular formed by a, preferably tubular, plug element. In particular, the inlet and/or the outlet can be provided to a connection of a flexible hose, in particular by pushing the flexible hose onto the plug element.

In addition, it is proposed that the second shell part comprises at least one channel branch, in particular to a connection of a temperature and/or pressure sensor and/or a changeover and/or control valve, preferably formed in one piece. This can advantageously enable a high level of functional integration into a functional module at least partially formed by the liquid line device. The number of components can advantageously be kept low. In particular, the channel branch, viewed in the flow direction through the check valve, is arranged completely in front of the check valve, in particular in the second section of the line section. Alternatively, the channel branch or a further channel branch could also be arranged completely behind the check valve, in particular in the first section of the line section, as seen in the flow direction through the check valve.

In addition, the first shell part and/or the second shell part are proposed. This can advantageously increase production efficiency.

Furthermore, the liquid line, in particular a coolant line of a preferably modular cooling circuit, with the liquid line device and/or a vehicle with the liquid line are proposed. This can advantageously increase production efficiency. In particular, the liquid line, which is formed in particular only by the two shell parts, forms a module of the modular cooling circuit. In particular, several liquid lines, one or more of which can have check valves according to the invention, are combined in the module. Can be advantageous through The module requires a plurality of hose lines to be replaced. The module advantageously comprises at least one integrated temperature and/or pressure sensor and/or at least one integrated switching and/or control valve.

Furthermore, a method for producing the first shell part is proposed, wherein the first shell part is produced completely, in particular including the sealing seat of the check valve, in a single injection molding process, in particular with the aid of at least one injection molding slide. As a result, the number of components can advantageously be kept low. A high level of tightness can advantageously be achieved, especially in comparison with versions in which the sealing seat is designed separately and/or in which the use of additional seals, such as O-rings, is necessary.

The liquid line device according to the invention, the shell parts according to the invention, the liquid line according to the invention, the vehicle according to the invention and the method according to the invention should not be limited to the application and embodiment described above. In particular, the liquid line device according to the invention, the shell parts according to the invention, the liquid line according to the invention, the vehicle according to the invention and the method according to the invention can have a number of individual elements, components and units that deviate from a number of individual elements, components and units mentioned herein in order to fulfill a function of operation described herein.

drawings

Further advantages result from the following drawing description. An exemplary embodiment of the invention is shown in the drawings. The drawings, description and claims contain numerous features in combination. The person skilled in the art will also expediently consider the features individually and combine them into further sensible combinations. Show it:

1 shows an example and schematic of a vehicle with a cooling circuit,

2 shows schematically a part of the cooling circuit with a liquid line having a liquid line device,

3a shows a side section through a first shell part and through a second shell part of the liquid line device in an area of a line section of the liquid line with a check valve in an open operating state,

3b shows the lateral section through the shell parts of the liquid line device in the area of the line section with the check valve in a closed operating state,

Fig. 4 is a schematic perspective view from above of the first shell part in the area of the line section and

Fig. 5 is a schematic flow diagram of a method for producing the liquid line device.

Description of the exemplary embodiment

Figure 1 shows an example and schematic of a vehicle 56 with a cooling circuit 10. Alternatively, the cooling circuit 10 could also be used in a device different from a vehicle. The cooling circuit 10 has a modular structure.

Figure 2 shows schematically a part of the cooling circuit 10. The cooling circuit 10 has a liquid line 14. The liquid line 14 is designed as a coolant line of the cooling circuit 10. The part of the cooling circuit 10 shown in FIG. 2 forms a module 62 of the cooling circuit 10. Line routes and numbers of lines for different modules according to the invention can be different from those in Figure 2 Module 62 shown as an example. The liquid line 14, in particular the module 62, has a liquid line device 54. The liquid line device 54 is intended for a line of a coolant of the cooling circuit 10. The liquid line device 54 has a first shell part 12. The liquid line device 54 has a second shell part 22. The first shell part 12 and the second shell part 22, in conjunction with one another, form a line section 16 intended for guiding liquid. The line section 16 provided for fluid guidance and formed by the shell parts 12, 22 forms a tubular line, in particular a pipeline. The tubular line, in particular the pipeline, is completely enclosed in the circumferential direction by the shell parts 12, 22. The line section 16 represents part of the liquid line 14. The tubular line formed by the shell parts 12, 22 has a cross-sectional shape that deviates from a round cross-sectional shape. Alternatively, the tubular line formed by the shell parts 12, 22 could also have a round cross-sectional shape.

The first shell part 12 forms an inlet 48 of the liquid line 14 in one piece. The first shell part 12 forms an outlet 50 of the liquid line 14 in one piece. The drain 50 and/or the inlet 48 could alternatively also be formed in one piece by the second shell part 22. The inlet 48 and/or the outlet 50 each comprise a plug element 58. The plug element 58 can be provided for connecting another module and/or a flexible hose (not shown in each case). The first shell part 12 forms a lower shell of the liquid line 14, in particular of the module 62 with the liquid line 14. Alternatively, the first shell part 12 could also form an upper shell of the liquid line 14, in particular of the module 62 with the liquid line 14. The second shell part 22 forms an upper shell of the liquid line 14, in particular of the module 62 with the liquid line 14. Alternatively, the second shell part 22 could also be a lower shell of the liquid line 14, in particular Module 62 with the liquid line 14. The first shell part 12 is designed as a plastic injection molded part. The second shell part 22 is designed as a plastic injection molded part. The second shell part 22 forms a channel branch 52 in one piece. The channel branch 52 is at least substantially perpendicular to a flow direction 36 within the line section 16. The channel branch 52 is intended for a connection of a sensor, for example a pressure sensor and/or a temperature sensor.

Figures 3a and 3b each show a side section through the two shell parts 12, 22 of the liquid line device 54 in an area of the line section 16. The liquid line 14 has a check valve 18 in the line section 16. The line section 16 has the check valve 18. In Figure 3a, the check valve 18 is shown in an open operating state 60. In Figure 3b, the check valve 18 is shown in a closed operating state 70. The check valve 18 includes a sealing seat 20. The check valve 18 includes a sealing element 32. The sealing element 32 is movably mounted. The sealing element 32 is movably mounted within the line section 16. The sealing element 32 is designed as a sealing ball. The sealing element 32 is made of an elastomer. The sealing element 32 is intended to sit liquid-tight on the sealing seat 20 in the closed operating state 70 of the check valve 18.

The check valve 18 is completely formed by the first shell part 12, the second shell part 22 and the sealing element 32.

The first shell part 12 completely encompasses the sealing seat 20 of the check valve 18. The sealing seat 20 is formed in one piece with the first shell part 12. The sealing seat 20 is monolithically formed on the first shell part 12. The sealing seat 20 forms a sealing surface 24 (see also FIG. 4). The sealing surface 24 is designed to run completely around an inner circumference 26 of the liquid line 14 formed by the line section 16 (see also FIG. 4). The sealing seat 20 is free of O-rings or comparable separate ones Seals or sealing surfaces formed by the shell parts 12, 22 are formed. The entire check valve 18 is free of O-rings or comparable seals or sealing surfaces formed separately from the shell parts 12, 22.

The liquid line 14 is continuously delimited along the line section 16, with the exception of the sealing seat 20, exclusively by the two shell parts 12, 22. In alternative embodiments, further shell parts that delimit the liquid line 14 can be provided. The check valve 18 has an opening direction 28. The opening direction 28 is the direction in which the sealing element 32 moves when the check valve 18 transitions from the closed operating state 70 to the open operating state 60. The line section 16 has a first section 30. The first subsection 30 of the line section 16 is arranged behind the check valve 18, viewed in the opening direction 28 of the check valve 18 and/or in the intended flow direction 36 of the liquid in the liquid line 14. The line section 16 has a second section 40. The second section 40 of the line section 16 is arranged in front of the check valve 18, viewed in the opening direction 28 of the check valve 18 and/or in the intended flow direction 36 of the liquid in the liquid line 14.

The line section 16 of the liquid line 14 is, viewed in the opening direction 28 of the check valve 18 and / or seen in the intended flow direction 36 of the liquid in the liquid line 14, behind the check valve 18 delimited by the shell parts 12, 22 in such a way that the first shell part 12 along the first section 30 of the line section 16 a first part of a circumference of the liquid line 14 in the first section 30 of the line section 16 delimits and that the second shell part 22 along the same first section 30 of the line section 16 delimits a second part of the circumference of the liquid line 14, which different from the first part of the circumference of the liquid line 14. The Line section 16 is, seen in the opening direction 28 of the check valve 18 and / or seen in the intended flow direction 36 of the liquid in the liquid line 14, limited in front of the check valve 18 by the shell parts 12, 22 in such a way that the first shell part 12 along the second section 40 of the line section 16 delimits a first part of a circumference of the liquid line 14 in the second section 40 of the line section 16 and that the second shell part 22 along the same second section 40 of the line section 16 delimits a second part of the circumference of the liquid line 14, which is different from the first Part of the circumference of the liquid line 14.

The second shell part 22 largely forms an alternative space 34 for the movably mounted sealing element 32. A smaller part of the alternative space 34 for the movably mounted sealing element 32 is also formed by the first shell part 12. When moving from the closed operating state 70 to the open operating state 60 of the check valve 18, the sealing element 32 shifts into the escape space 34. During the open operating state 70, the sealing element 32 remains in the escape space 34, so that the liquid flows past (below the sealing element 32) is made possible on the sealing element 32 in the open operating state 60 of the check valve 18. The escape space 34 is at least partially formed by a bulge 46 in the liquid line 14. The bulge 46 protrudes beyond a remainder of the liquid line 14 within the line section 16 in a direction perpendicular to the intended flow direction 36 of the liquid carried in the liquid line 14. The bulge 46 is asymmetrically designed when viewed from the side. The bulge 46 is approximately teardrop-shaped or egg-shaped in a top view of the second shell part 22. The bulge 46 forms a sealing ball pocket in the second shell part 22.

Figure 4 shows a schematic perspective view from above of the first shell part 12 in the area of the line section 16. The first shell part 12 has sealing element guide elements 38. The sealing element guide elements 38 are intended to guide a movement of the sealing element 32 of the check valve 18, which is movably mounted within the line section 16, between the open operating state 60 of the check valve 18 and the closed operating state 70 of the check valve 18. In the case shown as an example, the first shell part 12 comprises two sealing element guide elements 38. However, it is also conceivable that the first shell part 12 has more or fewer than two sealing element guide elements 38. The sealing element guide elements 38 are designed in a ramp shape. The sealing element guide elements 38 provide a guide path 44 for the sealing element 32 that runs obliquely relative to an intended flow direction 42 through the check valve 18 (see also FIGS. 3a and 3b). The guide track 44 for the sealing element 32, seen in the intended flow direction 42 through the check valve 18, is designed to rise relative to the flow direction 42 through the check valve 18. The guide track 44 for the sealing element 32 is, viewed in an intended blocking direction 64 of the check valve 18, designed to descend relative to the blocking direction 64.

The sealing element 32 is captively mounted in the line section 16 in a direction pointing away from the sealing seat 20 through an interaction of the bulge 46 of the second shell part 22 and the sealing element guide element 38 of the first shell part 12. The sealing element 32 is stored captively in the line section 16 through the interaction of the bulge 46 of the second shell part 22, the sealing element guide element 38 of the first shell part 12 and the sealing seat 20 of the first shell part 12.

5 shows a schematic flow diagram of a method for producing the liquid line device 54. In at least one manufacturing step 66, the first shell part 12 is completely manufactured in a single injection molding process. In manufacturing step 66 this is done First shell part 12 including the sealing seat 20 is produced in the individual injection molding process. In the manufacturing step 66, the sealing seat 20 of the first shell part 12 is produced using an injection molding slide, in particular an injection molding cross slide. The sealing seat 20 is removed from the mold via the injection molding slide. In at least one further manufacturing step 68, the second shell part 22 is completely manufactured in a further individual injection molding process. In at least one further manufacturing step 72, the sealing element 32 is inserted into the first shell part 12 at the location of the line section 16. In at least one further manufacturing step 74, the first shell part 12 and the second shell part 22 are connected to one another to form the liquid line device 54, in particular the liquid line 14.

Reference symbols

10 cooling circuit

12 First shell part

14 liquid line

16 line section

18 check valve

20 sealing seat

22 Second shell part

24 sealing surface

26 inner circumference

28 opening direction

30 First section

32 sealing element

34 alternative room

36 flow direction

38 sealing element guide element

40 Second section

42 flow direction

44 guideway

46 Bulge

48 inflow

50 expiration

52 canal junction

54 liquid line device

56 vehicle

58 connector element

60 Open operating state

62 module

64 blocking direction

66 manufacturing step Manufacturing step Closed operating state Manufacturing step Manufacturing step

Claims

Claims Liquid line device (54) for conducting a liquid, in particular a coolant of a cooling circuit (10), with at least a first shell part (12) and with at least a second

Shell part (22), which, in conjunction with the first shell part (12), forms a line section (16) intended to guide liquids and representing at least part of a liquid line (14), the line section (16) having at least one check valve (18), characterized in that the first

Shell part (12) completely encompasses a sealing seat (20) of the check valve (18). Liquid line device (54) according to claim 1, characterized in that the sealing seat (20) is formed in one piece or monolithically with the first shell part (12). Liquid line device (54) according to claim 1 or 2, characterized in that the sealing seat (20) forms a sealing surface (24) which runs completely around an inner circumference (26) of the liquid line (14) formed by the line section (16). Liquid line device (54) according to one of the preceding claims, characterized in that the line section (16), seen at least in an opening direction (28) of the check valve (18), is delimited behind the check valve (18) by the shell parts (12, 22). is that the first shell part (12) along a first section (30) of the line section (16) located behind the check valve (18) covers a first part of a circumference of the liquid line (14) in the first section (30) of the line section (16). and that the second shell part (22) delimits a second part of the circumference of the liquid line (14) along the same first section (30) of the line section (16), which is different from the first part of the circumference of the liquid line (14). Liquid line device (54) according to one of the preceding claims, in particular according to claim 4, characterized in that the line section (16), seen at least in the opening direction (28) of the check valve (18), in front of the check valve (18) in such a way through the shell parts ( 12, 22) is limited in that the first shell part (12) forms a first part of a circumference of the liquid line (14) in the second section (40) along a second section (40) of the line section (16) located in front of the check valve (18). of the line section (16) and that the second shell part (22) delimits a second part of the circumference of the liquid line (14) along the same second section (40) of the line section (16), which is different from the first part of the circumference of the liquid line (14 ) is. Liquid line device (54) according to one of the preceding claims, characterized in that the liquid line (14) is continuously delimited along the line section (16) by at least the two shell parts (12, 22) with the exception of the sealing seat (20). Liquid line device (54) according to one of the preceding claims, characterized in that the check valve (18) comprises a movably mounted sealing element (32), in particular within the line section (16), which is intended to seal in at least one operating state (70). to sit on the sealing seat (20). Liquid line device (54) according to one of the preceding claims, in particular according to claim 7, characterized in that the second shell part (22) has an escape space (34) for a sealing element (32) of the check valve (32) which is movably mounted, in particular within the line section (16). 18) at least partially, preferably at least to a large extent. Liquid line device (54) according to claim 8, characterized in that the escape space (34) is at least partially formed by a bulge (46) in the liquid line (14), which extends within the line section (16) in a direction perpendicular to an intended flow direction ( 36) of a liquid carried in the liquid line (14) protrudes beyond a remainder of the liquid line (14). 10. Liquid line device (54) according to one of the preceding claims, in particular according to claim 7, characterized in that the first shell part (12) has at least one sealing element guide element (38), which is intended to prevent a movement, in particular within the line section (16) movably mounted sealing element (32) of the check valve (18) between an open operating state (60) of the check valve (18) and a closed operating state (70) of the check valve (18).

11. Liquid line device (54) according to claim 10, characterized in that the sealing element guide element (38) specifies a guide path (44) for the sealing element (32) which runs obliquely relative to a flow direction (42) through the check valve (18).

12. Liquid line device (54) according to claim 11, characterized in that the guide track (44), seen in the flow direction (42) through the check valve (18), is designed to rise relative to the flow direction (42) through the check valve (18). .

13. Liquid line device (54) at least according to claims 7, 8 and 10, characterized in that the sealing element (32) through an interaction of the bulge (46) of the second shell part (22) and the sealing element guide element (38) of the first shell part (12), in particular at least in a direction pointing away from the sealing seat (20), is stored captively in the line section (16). 14. Liquid line device (54) according to one of the preceding claims, characterized in that the first shell part (12) and / or the second shell part (22) are designed as injection molded parts, in particular as plastic injection molded parts.

15. Liquid line device (54) according to one of the preceding claims, characterized in that at least the sealing seat (20), in particular the entire check valve (18), is free of O-rings or comparable seals formed separately from the shell parts (12, 22). is.

16. Liquid line device (54) at least according to claims 1 and 7, characterized in that the check valve (18) is completely formed by the first shell part (12), the second shell part (22) and the sealing element (32).

17. Liquid line device (54) according to one of the preceding claims, characterized in that the first shell part (12) comprises at least one inlet (48) of the liquid line (14) and / or at least one outlet (50) of the liquid line (14), preferably formed in one piece.

18. Liquid line device (54) according to one of the preceding claims, characterized in that the second shell part (22) comprises at least one channel branch (52), preferably formed in one piece.

19. First shell part (12) for the liquid line device (54) according to one of claims 1 to 18. Second shell part (22) for the liquid line device (54) according to one of claims 1 to 18. Liquid line (14), in particular coolant line of a, preferably modular, cooling circuit (10), with the liquid line device (54) according to one of the preceding

Expectations. Vehicle (56) with the liquid line (14) according to claim 21. Method for producing a first shell part (12) according to claim 19, in particular a liquid line device (54) according to one of claims 1 to 18, characterized in that the first shell part (12) in a single injection molding process, in particular with the aid of at least one injection molding slide, is manufactured completely, in particular including the sealing seat (20) of the check valve (18).