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

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

[0001] Liquid conduit device, liquid conduit and method for producing a shell part for the liquid conduit device

[0002] State of the art

[0003] 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.

[0004] A fluid line device for conducting a fluid, comprising at least a first shell part and at least one second shell part, which, in conjunction with the first shell part, forms a line section intended for conducting fluid and representing at least part of a fluid line, wherein the line section has at least one check valve, has already been proposed. The check valves of these known fluid line devices do not have a continuous sealing seat, but rather an interrupted sealing seat, half of which is formed by each of the shell parts, or a sealing seat that must be mounted as a separate component in a fluid line. Therefore, separate assembly steps are necessary in this case, in particular assembly steps that seal the assembly point or the sealing seat.

[0005] The object of the invention is, in particular, to provide a generic device with advantageous properties with regard to efficiency, in particular manufacturing efficiency. This object is achieved according to the invention by the features of patent claims 1 and 19 to 23, while advantageous embodiments and further developments of the invention can be found in the subclaims.

[0006] Advantages of the invention

[0007] The invention is based on a liquid conducting device for conducting a liquid, in particular a cooling liquid of a cooling circuit, with at least one first shell part and with at least one second shell part, which in conjunction with the first shell part forms a line section provided for conducting liquid and representing at least part of a liquid line, wherein the line section has at least one check valve.

[0008] It is proposed that the first shell part completely encompasses / has a sealing seat of the check valve, in particular one which runs completely around an inner circumference of the line section. This can advantageously increase production efficiency. Separate sealing seat assembly and / or sealing seat sealing can advantageously be dispensed with. This can advantageously increase cost efficiency. Components and / or process steps for production are advantageously eliminated. The modularity of cooling circuits can advantageously be improved. In particular, the liquid line device is designed as a coolant line device of a cooling circuit, e.g. of a vehicle. In particular, the liquid is designed as a cooling liquid, for example as water, as a refrigerant mixture or as thermal oil.In a cooling circuit, heat is particularly 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 forms, in particular, a lower shell. The second shell part forms, in particular, 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 each likewise form a partial circle of an inner circumference of the liquid line, in particular of the line section. Preferably, however, the liquid line is 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, in particular 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 to be understood in particular as a line component which permits the flow of fluid, in particular at least within the line section, in only one 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, by virtue of a sealing element, such as a sealing ball, sitting thereon, seals at least the line section in a completely fluid-tight manner. The line section is preferably free of line branches.“Intended” should be understood in particular to mean specially 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 performs 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, in a plan 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 concealed and / or covered by the second shell part.

[0009] It is conceivable for the completely circumferential sealing seat to be mounted on the first shell part, but it is preferably proposed that the sealing seat be formed integrally or monolithically with the first shell part. This advantageously makes it possible to keep the number of components low. Advantageously, a high level of tightness can be achieved. Advantageously, simple production in very few production steps can be enabled. “Integral” is to be understood in particular as being connected by a material fit, for example by a welding process, melting process and / or adhesive process. “Monolithic” is to be understood in particular as being formed onto the part, for example by being produced from a cast and / or by being produced using 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, a metal construction of the first shell part and / or the second shell part is also conceivable. In particular, the shell parts are each made of similar materials or of the same material. When constructed 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 transparencies, or with different colors, etc.

[0010] It is further proposed that the sealing seat form a sealing surface, preferably continuous and / or uninterrupted and / or located in a common plane, which completely encircles an inner circumference of the fluid line formed by the line section. This advantageously ensures a high level of tightness of the check valve.

[0011] Furthermore, it is proposed that the line section, at least viewed 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 delimits a first part of a circumference of the liquid line in the first partial section of the line section along a first partial section of the line section located behind the check valve, and that the second shell part 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, along the same first partial section of the line section. This advantageously makes it possible to keep the number of components low. Advantageously, a high level of tightness can be achieved. Advantageously, simple production in particularly few manufacturing steps can be enabled.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 subsection of the line section lies downstream of the check valve and / or downstream of a second subsection of the line section in the intended flow direction of the line section (permitted by the check valve).

[0012] 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 upstream of the check valve by the shell parts in such a way that the first shell part delimits a first part of a circumference of the liquid line in the second sub-section of the line section along the second sub-section of the line section located upstream of the check valve, and the second shell part 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, along the same second sub-section of the line section, the number of components can advantageously be kept low. A high level of tightness can advantageously be achieved.

[0013] Advantageously, simple production can be enabled in a particularly small number of manufacturing steps. In particular, the second section of the line section is located upstream of the check valve and / or upstream of the first section of the line section in the intended flow direction of the line section (permitted by the check valve). The shell parts can be connected to one another in a materially bonded manner (e.g., by an adhesive, by welding, or by silicone), a force-fitted connection (e.g., by a press fit), and / or a form-fitted connection (e.g., by locking elements), preferably in a liquid-tight manner.

[0014] It is further proposed that the liquid line along the line section, with the exception of the sealing seat, be continuously delimited by at least the two shell parts, preferably exclusively by the two shell parts. This advantageously makes it possible to keep the number of components low. Preferably, the same shell parts delimit the liquid line upstream and downstream of the check valve and / or the fully circumferential sealing seat. In particular, the entire line section, preferably the entire liquid line, is delimited by just one of the shell parts only at the check valve(s) in the region of the sealing seat for a short distance, while preferably in the entire remainder of the line section, preferably the entire liquid line, it is always delimited by at least two, in particular exactly two, interconnected shell parts.

[0015] In addition, it is proposed that the check valve comprise a sealing element which is movably mounted, in particular within the line section, preferably within the first subsection of the line section, and which is intended to sit sealingly on the sealing seat in at least one operating state. This advantageously makes it possible to achieve a good and / or dynamic sealing effect, in particular 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 enclosed by the line section, in particular the two shell parts. In particular, the sealing element is arranged so as to be movable within the line section essentially parallel to an intended flow direction.It is also proposed that the second shell part at least partially, preferably at least to a large extent, form an escape space for the sealing element of the check valve, which is in particular movably mounted within the line section. This advantageously enables reliable function of the check valve. Advantageously, complete integration of the check valve into the line section, which in particular consists only of the two shell parts, can be enabled. In particular, the escape 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 partial areas of the line section directly adjacent to the escape space. This advantageously defines a movement space for the sealing element.In particular, the escape space forms, reduces, and / or replicates a sealing element contour, preferably a spherical contour. A "majority" is understood to mean, in particular, 51%, advantageously 66%, preferably 75%, more preferably 85%, and particularly preferably 95%.

[0016] If the escape space is at least partially formed by a bulge in the fluid line, which protrudes beyond a remainder of the fluid line within the line section in a direction perpendicular to an intended, in particular central, flow direction of a fluid conveyed in the fluid line, this advantageously enables complete integration of the check valve into the line section, which in particular consists only of the two shell parts. Advantageously, any influence on the fluid flow within the line section can be minimized, in particular by directing the flow beneath the sealing element rather than around it.In particular, the bulge protrudes vertically above the fluid line by at least 20%, preferably by at least 30%, and preferably by at least 50% of an average inner diameter of the fluid line outside a region containing the check valve. In particular, the bulge protrudes vertically above the fluid line by at least one-third of an outer diameter of the sealing element, preferably by approximately half the outer diameter of the sealing element.

[0017] It is further proposed that the first shell part have at least one sealing element guide element, which is provided to guide 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 is in particular lifted from the sealing seat, and a closed operating state of the check valve, in which the sealing element is in particular seated on the sealing seat. This advantageously makes it possible to achieve a high level of reliability for the check valve. Advantageously, the high level of reliability can be achieved without the need for additional restoring components, such as a return spring. However, designs with a return spring are also conceivable as an alternative.The sealing element guide element is formed integrally or monolithically with the first shell part. The sealing element guide element is provided to ensure that the sealing element reliably meets the sealing seat every time. The sealing element guide element is designed, in particular, as a sealing ball guide. It is conceivable for the first shell part to have more than one sealing element guide element, for example two, three, or four sealing element guide elements, which are preferably designed at least substantially identically. It is conceivable for the second shell part to have 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 free of sealing element guide elements.

[0018] If the sealing element guide element has a relative to a

[0019] If the flow direction through the check valve is determined by a guide track for the sealing element that runs diagonally, its gravity can advantageously support the guidance of the return movement of the sealing element. This can advantageously achieve a high level of reliability for the check valve. The check valve therefore advantageously has a self-closing function. Particularly when the liquid line is depressurized, the sealing element rolls automatically into the sealing seat due to its weight along the guide track and closes the check valve. This can be useful for various reasons, e.g. to prevent unwanted backflow / counterflow when pressure builds up, e.g. when the engine is started, or to prevent unwanted flow after a pressure drop, e.g. after the engine is stopped, or to prevent a possibleUnwanted mixing of coolant flows (hot / cold) at similar pressure conditions upstream and downstream of the check valve due to the valve closing due to the weight of the sealing element, in particular the sealing ball. The angle formed by the inclined guideway with the mean flow direction of the line section is preferably approximately 30°. Alternatively, the guideway could also run at least substantially parallel to the mean flow direction. Thus, the angle of the guideway can assume values ​​between at least 0° and 50°, preferably between 5° and 50° with an inclined guideway design.

[0020] If, in addition, the guide path is designed to rise relative to the flow direction through the check valve, as seen in the flow direction through the check valve, this advantageously achieves a particularly automatic guidance of the sealing element to the closed state of the check valve. In particular, the sealing element is arranged behind the sealing seat, as seen in the flow direction through the check valve, in particular in the first subsection of the line section. In particular, the sealing element guide element is arranged behind the sealing seat, as seen in the flow direction through the check valve, in particular in the first subsection of the line section.In addition, it is proposed that the sealing element is mounted in a captive manner in the line section by 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.

[0021] 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.

[0022] Furthermore, it is proposed that at least the sealing seat, in particular the entire check valve, be designed free of O-rings or comparable seals formed separately from the shell parts, and / or that the check valve be completely formed by the first shell part, the second shell part, and the sealing element. This advantageously allows the number of components to be kept low and, in particular, manufacturing to be simplified and made more cost-effective.

[0023] Furthermore, if the check valve is 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 be advantageously achieved. The shell parts, in conjunction with one another, preferably form a pipeline whose cross-section can have any desired 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, could form a curved boundary of the pipeline, for example, forming a partial circle.

[0024] It is further proposed that the first shell part preferably completely encompasses, preferably integrally forming, at least one inlet of the fluid line and / or at least one outlet of the fluid line. This advantageously allows a high degree of tightness of the fluid line to be achieved. Furthermore, the number of components can advantageously be kept low. The inlet and / or the outlet is formed in particular by a preferably tubular plug element. In particular, the inlet and / or the outlet can be provided for connecting a flexible hose, in particular by sliding the flexible hose onto the plug element.

[0025] It is additionally proposed that the second shell part comprise at least one channel branch, in particular for connecting a temperature and / or pressure sensor and / or a changeover and / or control valve, preferably forming said branch in one piece. This advantageously enables a high degree of functional integration into a functional module at least partially formed by the liquid line device. Advantageously, the number of components can be kept low. In particular, the channel branch is arranged completely upstream of the check valve, in particular in the second sub-section of the line section, as viewed in the flow direction through the check valve. Alternatively, however, the channel branch or a further channel branch could also be arranged completely downstream of the check valve, in particular in the first sub-section of the line section, as viewed in the flow direction through the check valve.

[0026] Furthermore, the first shell part and / or the second shell part are proposed. This can advantageously increase production efficiency.

[0027] Furthermore, the fluid line, in particular a coolant line of a preferably modular cooling circuit, with the fluid line device and / or a vehicle with the fluid line are proposed. This can advantageously increase production efficiency. In particular, the fluid line, which is formed in particular only by the two shell parts, forms a module of the modular cooling circuit. In particular, a plurality of fluid lines, one or more of which may have check valves according to the invention, are combined in the module. Advantageously, a plurality of hose lines can be replaced by the module. Advantageously, the module comprises at least one integrated temperature and / or pressure sensor and / or at least one integrated changeover and / or control valve.

[0028] Furthermore, a method for producing the first shell part is proposed, wherein the first shell part is manufactured 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. This advantageously allows the number of components to be kept to a minimum. Advantageously, a high level of tightness can be achieved, particularly compared to designs in which the sealing seat is formed separately and / or in which the use of additional seals, such as O-rings, is necessary.

[0029] The fluid-conducting device according to the invention, the shell parts according to the invention, the fluid conduit according to the invention, the vehicle according to the invention, and the method according to the invention are not intended to be limited to the application and embodiment described above. In particular, the fluid-conducting device according to the invention, the shell parts according to the invention, the fluid conduit according to the invention, the vehicle according to the invention, and the method according to the invention may comprise a number of individual elements, components, and units that differs from the number stated herein in order to fulfill a function described herein.

[0030] Drawings

[0031] Further advantages will become apparent from the following description of the drawings. The drawings illustrate an embodiment of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will conveniently consider the features individually and combine them into useful further combinations. They show:

[0032] Fig. 1 shows an example and schematic view of a vehicle with a cooling circuit,

[0033] Fig. 2 schematically shows a part of the cooling circuit with a liquid line having a liquid line device,

[0034] Fig. 3a shows a lateral section through a first shell part and through a second shell part of the liquid line device in a region of a line section of the liquid line with a check valve in an open operating state,

[0035] Fig. 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,

[0036] Fig. 4 is a schematic perspective view from above of the first shell part in the area of ​​the line section and

[0037] Fig. 5 is a schematic flow diagram of a method for manufacturing the liquid conducting device.

[0038] Description of the embodiment

[0039] Figure 1 shows, by way of example and schematically, a vehicle 56 with a cooling circuit 10. Alternatively, the cooling circuit 10 could also be used in a device other than a vehicle. The cooling circuit 10 has a modular design.

[0040] Figure 2 schematically shows 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 Figure 2 forms a module 62 of the cooling circuit 10. The line paths and numbers of lines of various modules according to the invention can differ from those of the module 62 shown as an example in Figure 2. The liquid line 14, in particular the module 62, has a liquid line device 54. The liquid line device 54 is provided for conducting 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 conducting liquid. The line section 16, intended for conducting liquid 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, however, the tubular line formed by the shell parts 12, 22 could also have a round cross-sectional shape.

[0041] 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 outlet 50 and / or the inlet 48 could alternatively also be formed integrally 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 a further 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 form a lower shell of the fluid line 14, in particular of the module 62 with the fluid line 14. The first shell part 12 is formed as a plastic injection-molded part. The second shell part 22 is formed as a plastic injection-molded part. The second shell part 22 integrally forms a channel branch 52. The channel branch 52 is oriented at least substantially perpendicular to a flow direction 36 within the line section 16. The channel branch 52 is provided for connecting a sensor, for example, a pressure sensor and / or a temperature sensor.

[0042] Figures 3a and 3b each show a lateral section through the two shell parts 12, 22 of the liquid line device 54 in a region 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 comprises a sealing seat 20. The check valve 18 comprises 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.

[0043] The check valve 18 is completely formed by the first shell part 12, the second shell part 22 and the sealing element 32.

[0044] The first shell part 12 completely encloses the sealing seat 20 of the check valve 18. The sealing seat 20 is formed integrally with the first shell part 12. The sealing seat 20 is monolithically formed onto the first shell part 12. The sealing seat 20 forms a sealing surface 24 (see also Fig. 4). The sealing surface 24 is formed 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 formed free of O-rings or comparable seals or sealing surfaces formed separately from the shell parts 12, 22. The entire check valve 18 is formed free of O-rings or comparable seals or sealing surfaces formed separately from the shell parts 12, 22.

[0045] The liquid line 14 is delimited along the line section 16, with the exception of the sealing seat 20, continuously by exclusively 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 sub-section 30. The first sub-section 30 of the line section 16 is arranged downstream 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 has a second sub-section 40.The second subsection 40 of the line section 16 is arranged upstream of the check valve 18, as seen 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.

[0046] The line section 16 of the liquid line 14 is, viewed in the opening direction 28 of the check valve 18 and / or viewed in the intended flow direction 36 of the liquid in the liquid line 14, delimited behind the check valve 18 by the shell parts 12, 22 in such a way that the first shell part 12 delimits a first part of a circumference of the liquid line 14 in the first partial section 30 of the line section 16 along the first partial 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 partial section 30 of the line section 16, which second part of the circumference of the liquid line 14 is different from the first part of the circumference of the liquid line 14.The line section 16 is, as seen in the opening direction 28 of the check valve 18 and / or as seen in the intended flow direction 36 of the liquid in the liquid line 14, delimited upstream of the check valve 18 by the shell parts 12, 22 in such a way that the first shell part 12 delimits a first part of a circumference of the liquid line 14 in the second partial section 40 of the line section 16 along the second partial section 40 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 partial section 40 of the line section 16, which second part of the circumference of the liquid line 14 is different from the first part of the circumference of the liquid line 14.

[0047] The second shell part 22 largely forms an escape space 34 for the movably mounted sealing element 32. A smaller part of the escape space 34 for the movably mounted sealing element 32 is also formed by the first shell part 12. During the movement from the closed operating state 70 to the open operating state 60 of the check valve 18, the sealing element 32 is displaced into the escape space 34. During the open operating state 70, the sealing element 32 remains in the escape space 34, allowing the fluid (below the sealing element 32) to flow past the sealing element 32 in the open operating state 60 of the check valve 18. The escape space 34 is formed at least partially by a bulge 46 in the fluid line 14.The bulge 46 protrudes within the line section 16 in a direction perpendicular to the intended flow direction 36 of the liquid conveyed in the liquid line 14 beyond a remainder of the liquid line 14. The bulge 46 is asymmetrical when viewed from the side. In a plan view of the second shell part 22, the bulge 46 is approximately drop-shaped or egg-shaped. The bulge 46 forms a sealing ball pocket in the second shell part 22.

[0048] Figure 4 shows a schematic perspective view from above of the first shell part 12 in the region of the line section 16. The first shell part 12 has sealing element guide elements 38. The sealing element guide elements 38 are provided 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 example shown, the first shell part 12 comprises two sealing element guide elements 38. However, it is also conceivable for the first shell part 12 to have more or fewer than two sealing element guide elements 38. The sealing element guide elements 38 are ramp-shaped.The sealing element guide elements 38 define 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 Figures 3a and 3b). The guide path 44 for the sealing element 32 is designed to rise relative to the flow direction 42 through the check valve 18, as viewed in the intended flow direction 42 through the check valve 18. The guide path 44 for the sealing element 32 is designed to fall relative to the blocking direction 64, as viewed in an intended blocking direction 64 of the check valve 18.

[0049] The sealing element 32 is captively mounted in the line section 16 by a cooperation of the bulge 46 of the second shell part 22 and the sealing element guide element 38 of the first shell part 12 in a direction away from the sealing seat 20. The sealing element 32 is captively mounted in the line section 16 by a cooperation 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.

[0050] Figure 5 shows a schematic flow diagram of a method for producing the liquid line device 54. In at least one production step 66, the first shell part 12 is completely manufactured in a single injection molding process. In the production step 66, the first shell part 12, including the sealing seat 20, is manufactured in the single injection molding process. In the production step 66, the sealing seat 20 of the first shell part 12 is manufactured with the aid of an injection molding slide, in particular an injection molding cross slide. The sealing seat 20 is demolded via the injection molding slide. In at least one further production step 68, the second shell part 22 is completely manufactured in a further single injection molding process. In at least one further production 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.

[0051] Reference symbol

[0052] 10 Cooling circuit

[0053] 12 First shell part

[0054] 14 Liquid line

[0055] 16 line sections

[0056] 18 Check valve

[0057] 20 Sealing seat

[0058] 22 Second shell part

[0059] 24 Sealing surface

[0060] 26 inner circumference

[0061] 28 Opening direction

[0062] 30 First section

[0063] 32 Sealing element

[0064] 34 Alternative space

[0065] 36 Flow direction

[0066] 38 Sealing element guide element

[0067] 40 Second section

[0068] 42 Flow direction

[0069] 44 guideway

[0070] 46 bulge

[0071] 48 Inlet

[0072] 50 Expiration

[0073] 52 sewer branch

[0074] 54 Liquid line device

[0075] 56 vehicles

[0076] 58 Plug element

[0077] 60 Open operating state

[0078] 62 Module

[0079] 64 Blockade direction

[0080] 66 Manufacturing step Manufacturing step Closed operating state Manufacturing step Manufacturing step

Claims

Claims Liquid conduction 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 line section (16) intended for a liquid guide and representing at least part of a liquid line (14), wherein the line section (16) has at least one check valve (18), characterized in that the first The shell part (12) completely encloses a sealing seat (20) of the check valve (18). The fluid line device (54) according to claim 1, characterized in that the sealing seat (20) is formed integrally or monolithically with the first shell part (12). The fluid line device (54) according to claim 1 or 2, characterized in that the sealing seat (20) forms a sealing surface (24) that completely encircles an inner circumference (26) of the fluid 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), at least viewed in an opening direction (28) of the check valve (18), is delimited behind the check valve (18) by the shell parts (12, 22) in such a way that the first shell part (12) delimits a first part of a circumference of the liquid line (14) in the first part (30) of the line section (16) along a first partial section (30) of the line section (16) located behind the check valve (18), and that the second shell part (22) delimits a second part of the circumference of the liquid line (14) along the same first partial section (30) of the line section (16), which second part 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), at least in the opening direction (28) of the check valve (18), is delimited upstream of the check valve (18) by the shell parts (12, 22) in such a way that the first shell part (12) delimits a first part of a circumference of the liquid line (14) in the second partial section (40) of the line section (16) along a second partial section (40) of the line section (16) located upstream of the check valve (18), and that the second shell part (22) delimits a second part of the circumference of the liquid line (14) along the same second partial section (40) of the line section (16), which second part is different from the first part of the circumference of the liquid line (14). A fluid line device (54) according to one of the preceding claims, characterized in that the fluid line (14) is continuously delimited by at least the two shell parts (12, 22) along the line section (16), with the exception of the sealing seat (20). A fluid line device (54) according to one of the preceding claims, characterized in that the check valve (18) comprises a sealing element (32) that is movably mounted, in particular within the line section (16), and is designed to rest sealingly on the sealing seat (20) in at least one operating state (70).A fluid line device (54) according to one of the preceding claims, in particular according to claim 7, characterized in that the second shell part (22) at least partially, preferably at least largely, forms an escape space (34) for a sealing element (32) of the check valve (18), which is movably mounted, in particular, within the line section (16). A fluid 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 fluid line (14), which protrudes beyond a remainder of the fluid line (14) within the line section (16) in a direction perpendicular to an intended flow direction (36) of a fluid conveyed in the fluid 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 provided to guide a movement of a sealing element (32) of the check valve (18), in particular movably mounted within the line section (16), 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) defines 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) is mounted in a captive manner in the line section (16) by 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).

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 designed free of O-rings or comparable seals formed separately from the shell parts (12, 22).

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 conduction 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 conduit 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 cooling liquid line of a preferably modularly constructed cooling circuit (10), with the liquid line device (54) according to one of the preceding Claims. Vehicle (56) with the fluid line (14) according to claim 21. Method for producing a first shell part (12) according to claim 19, in particular a fluid line device (54) according to one of claims 1 to 18, characterized in that the first shell part (12) is produced completely, in particular including the sealing seat (20) of the check valve (18), in a single injection molding process, in particular with the aid of at least one injection molding slide.

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