Valve body for a valve of a coolant system, valve having said valve body, and manufacturing method

Abstract

The invention relates to a valve body for a valve of a coolant system, comprising at least one tubular through-channel (50) for a coolant, and a main body (100) which is designed to be rotatable about an axis of rotation by means of a drive and which has a contact surface (11) for abutting against a sealing device of a valve housing of the valve, the invention relates to a sealing element (10) having at least two sealing parts (12) and at least two sliding parts (13) on a spherical envelope surface, the base body (100) being separated by an equatorial plane arranged orthogonally to the axis of rotation. The invention is distinctive in that the base body (100) comprises an opening (16) arranged parallel to the equatorial plane and closed by a cover (200), the through-channel (50) being formed by the base body (100) and the cover (200).

Description

Technical Field

[0001] The invention relates to a valve body for a valve of a coolant system. In addition, the invention also relates to a valve having such a valve body, and a manufacturing method. Prior art

[0002] The valve body type mentioned at the beginning is known, for example DE102020207303A1. Such a valve body is usually used as an actuating element in a valve to guide the coolant to different paths. For this purpose, the valve body has a base body, which can be rotated around a rotation axis by a drive device. At least a part of the outer surface or outer contour of the valve body is a spherical envelope surface, so that the sealing device between the valve body and the valve housing can be well sealed with the valve body. The valve body also includes at least one through-channel, which has at least one opening, which is located on the equatorial plane of the base body.

[0003] Such valve bodies are usually produced using an injection molding process. In order to mold the through-channel, a sliding element is introduced into the injection mold during the injection molding process and first the sliding element is injection molded. In this way, the sliding element molds the through-channel. Before the valve body molded in this way is removed from the injection mold, the sliding element is removed, thereby exposing the through-channel. In order to be able to remove the sliding element easily, it must not have a continuous cross-sectional diameter, but rather taper towards its tip. The sliding element therefore essentially has a draft angle, so that it can be easily removed from the cooled injection molded part. However, this production-related requirement has a negative impact on the function of the valve body. Since the through-channel does not have a uniform cross-sectional diameter, pressure gradients occur when the coolant flows through the through-channel, which can lead to unnecessary turbulence or pressure peaks in the entire coolant system. In particular, these pressure changes can have an impact on different areas of the coolant system when the valve is switched. This can therefore at least lead to energy losses, which must be compensated, for example, by increasing the power of the coolant pump, which in turn reduces the efficiency of the coolant system. SUMMARY OF THE INVENTION

[0005] The object of the present invention is therefore to specify a valve body for a valve of a coolant system which can be easily adapted to the respective intended use in a coolant system within the production range, in particular to improve the coolant flow. Furthermore, an object of the present invention is to specify a valve having such a valve body, as well as a manufacturing method.

[0006] According to the present invention, the valve body described in the subject matter of claim 1, the valve described in the subject matter of claim 11 and the manufacturing method described in the subject matter of claim 13 can achieve the above-mentioned object.

[0007] Therefore, a specific idea of ​​the present invention is to specify a valve body for a coolant system, wherein the valve body comprises the following parts:

[0008] - at least one tubular through-channel for a coolant, and

[0009] - A base body, which is designed to be rotatable around a rotation axis by a drive device and has a contact surface for abutting against a sealing device of a valve housing of a valve, and has at least two sealing parts and at least two sliding parts located on a spherical surface.

[0010] In this case, the base body is divided by an equatorial plane arranged orthogonally to the axis of rotation. According to the invention, it is provided that the base body comprises an opening arranged parallel to the equatorial plane and closed by a cover, wherein the through-channel is composed of the base body and the cover.

[0011] The contact surface of the base body has at least two sealing parts and at least two sliding parts on the spherical surface, thereby allowing good sealing with the valve housing and making it easy to switch the valve position. The sealing parts located specifically on the spherical surface ensure that the base body and the valve housing are permanently and well sealed. This avoids the loss of coolant. In contrast, the sliding parts ensure that the contact surface can slide well on the sealing device of the valve housing during the valve switching process (i.e., during the rotation of the valve body).

[0012] A valve body consisting of a base body and a cover, i.e. a two-part configuration of the valve body, has several advantages. A significant advantage is that, since the base body is created separately during the manufacturing process of the injection molding process, there is a greater degree of freedom in the internal shape of the base body. Specifically, sliding elements that are not equipped with a draft angle can be used to create a through-channel. The two-part configuration of the valve body makes it possible to create a through-channel with a uniform cross-sectional diameter during the manufacturing process. Alternatively, through-channels with different cross-sectional diameters can also be created. For example, a targeted configuration can be made to achieve an acceleration of the flow of the coolant or to achieve a pressure reduction. The two-part configuration of the valve body allows these options, thereby increasing the flexibility of the manufacturing process in order to produce different valve bodies for different applications of valves for coolant systems.

[0013] In a preferred embodiment, however, the valve body is configured so that the through-channel has a uniform cross-sectional diameter. This avoids the pressure gradients that occur in the case of an integrally injection-molded valve body. Instead, a uniform, in particular laminar, coolant flow can be achieved.

[0014] According to another preferred variant of the valve body according to the invention, it can be provided that the height of the sliding part is smaller than the diameter of the sealing part, as a result of which the coolant can flow through the base body during the switching operation of the valve. In other words, the contact surface of the base body is preferably not arranged on the entire circumference of the spherical envelope surface, but is interrupted in a region; or does not extend along the spherical envelope surface in the region, but extends within a spherical volume defined by the spherical envelope surface. This is used in particular in the region of the sliding part, the height of which is smaller than the diameter of the sealing part. Here, the sealing part extends annularly around the passage opening and includes the diameter. In the region of the sliding part, a targeted, required leakage is thus generated, so that the coolant can flow through the base body.

[0015] In the case of a valve body that consists essentially of contact surfaces that do not allow overflowing during the switching process, the coolant flow is completely interrupted at least briefly during the valve switching process. This leads to an accumulation of coolant in the sliding part, resulting in higher local pressures. As soon as the valve body is rotated to such an extent that the next through-channel is opened, the local pressure drops sharply, which can lead to strong pressure fluctuations in the entire coolant system. Such strong pressure fluctuations are usually undesirable.

[0016] In a preferred exemplary embodiment of the present invention, it is provided that the sliding portion is arranged lower than the sealing portion, and part of the coolant can flow through the valve body during the valve switching process. This avoids the accumulation of coolant in the sliding portion. Therefore, the pressure peak generated by the conventional valve body during the switching operation is effectively suppressed. This promotes a uniform coolant flow in the entire coolant system.

[0017] The cover that closes the opening of the substrate can be connected to the substrate by integral bonding and / or fitting, specifically by welding or cutting and pasting. The cover is essentially used to complete the valve body. In order to make the valve body basically sealed in other aspects, it is best to connect the cover to the substrate in an integral bonding manner, specifically by welding. Suitable welding methods include hot air welding, ultrasonic welding or laser welding. A particularly simple manufacturing method is to connect the cover to the substrate in a fitting manner, for example by cutting and pasting. This method simplifies the production process and is particularly efficient in high batch rate production. The fitting connection can also be used to first position the cover, wherein the cover is fixed to the substrate in an integral bonding manner, and then a firm and sealed connection is formed. In this regard, for example, the cover can first be connected to the opening by cutting and pasting, and then fixed and sealed by a welding process.

[0018] In a preferred embodiment of the valve body according to the invention, the base body has a partition wall which extends along the axis of rotation of the drive shaft and divides the rotor into two half-valves, wherein a through-channel is formed in each half-valve. Overall, the valve body thus has two through-channels, which increases the possible use cases of the valve body. In particular, a valve can thus be created which connects or disconnects a plurality of coolant circuits.

[0019] Preferably, the cover has a flow guide profile, which has two parallel legs. Preferably, the flow guide profile is adjusted so that it can guide the flow in the corresponding through channel. In this case, the flow guide profile is preferably configured to achieve a substantially uniform flow through the through channel. The gap for receiving the partition wall can extend between the two parallel legs of the flow guide profile. When the cover is inserted into the opening of the base, the cover can therefore be fully aligned through the gap of the partition wall of the base. This ensures that the through channel formed by the base and the cover plate is correctly aligned. Therefore, the gap between the parallel legs of the flow guide profile forms a snug connection between the cover plate and the base, while ensuring the correct positioning of the cover.

[0020] The flow guide profile of the cover, in particular each leg, may have a curved inner surface, which merges flush into the curved inner surface of the flow guide profile of the base and defines the through-channel. Preferably, the curved inner surface forms part of the outer surface of the duct. This preferably applies to the inner surface of the legs and the inner surface of the flow guide profile of the base. In this way, the inner surface of the flow guide profile of the cover and the inner surface of the flow guide profile of the base form the curved inner surface of the tubular through-channel, respectively. In this way, the through-channel is defined by the base and the cover and has a substantially circular cross-section. In particular, it is provided that the cross-sectional diameter of the through-channel is uniform over its entire length.

[0021] According to a further embodiment of the valve body according to the invention, the sliding parts provided as the contact surfaces are each divided again by a dividing ridge extending parallel to the axis of rotation.

[0022] In the previous integrally injection-molded valve bodies, there is a problem that a separation ridge is usually formed on the equatorial plane. The separation ridge forms an unevenness on the contact surface of the sealing device facing the valve housing. This results in that the seal between the sealing part and the sealing device cannot be fully ensured because the separation ridge allows coolant to leak. During the switching process of such known valves, there is also a risk that the seal is damaged by the separation ridge sliding on the sealing device during the switching process, so that permanent leakage may also occur.

[0023] According to an embodiment of the invention, this is avoided by the fact that the dividing ridges extend parallel to the axis of rotation and are arranged in the sliding part. The sealing part is therefore free of any dividing ridges, ensuring a good and permanent seal. In the region of the sealing part, the contact surface can therefore be designed to be very smooth, so that a good abutment is formed with the sealing device of the valve housing. This ensures a permanent good seal.

[0024] Furthermore, it is preferred that the separating ridge is arranged to be completely sunken in the groove. In other words, it is provided that the separating ridge does not protrude beyond the contact surface. This ensures that during the switching of the valve (i.e. during the sliding of the sliding part on the sealing device), the separating ridge does not damage the sealing device. The relatively rough separating ridge sinks into the groove and therefore substantially does not come into frictional contact with the sealing device. Therefore, a good seal is ensured even after a plurality of switching operations.

[0025] Preferably, the sealing portion extends in an annular manner around the passage opening. In the case where the circular sealing portion is simultaneously located on the spherical envelope, a substantially planar sealing surface can be obtained, which is a prerequisite for achieving a permanent good seal. In particular, this avoids having to configure the sealing device in a three-dimensional manner in order to achieve a good sealing effect. Thus, a relatively simple sealing device, such as a sealing ring, is sufficient to achieve a good seal with the sealing portion.

[0026] An independent aspect of the invention relates to a valve with a valve housing having at least two connecting channels, in particular four connecting channels. The valve also comprises a valve body as described above, which is rotatably arranged in the valve housing and can be positioned so that its through channel connects the two connecting channels.

[0027] The advantages and preferred improvements of the above valve body are also correspondingly applied to the valve of the present disclosure. Specifically, the valve forms a switching valve, so that two independent coolant circuits can be connected or separated from each other.

[0028] In a preferred embodiment of the valve, each connecting channel is assigned a sealing device, which seals with the valve body, in particular with the sealing portion of the contact surface. The sealing device can consist of one or more sealing elements. If a plurality of sealing elements are provided, it is advantageous to assign a separate function to each sealing element. For example, one sealing element can ensure radial sealing and another sealing element can ensure axial sealing. Preferably, the sealing elements of the sealing device are connected to each other in a restrained manner.

[0029] Within the scope of the present application, a method for manufacturing the above-mentioned valve body is further disclosed and claimed, wherein the base body and the cover are each formed by an injection molding process and are subsequently connected to each other. The method allows better design versatility and design freedom due to the two-piece or separate design of the base body and the cover, especially with regard to the shape of the at least one through-channel formed in the valve body.

[0030] The cover is preferably connected to the base by welding, in particular by hot air welding, ultrasonic welding or laser welding. In addition, the cover and the base can also be connected by cutting and pasting. It is also conceivable that the cover is initially connected to the base by fitting and is positioned by cutting and pasting or snapping, wherein the cover is finally fixed to the base by a subsequent welding method.

[0031] According to a particularly preferred improvement of the method according to the invention, during the injection molding of the base body, at least two sliding elements are introduced, in particular radially into the injection mold, and are removed after the base body has cooled, wherein the sliding elements form the flow-guiding contour of the base body, including the channel openings. As a result, each sliding element can have a uniform cross-sectional diameter. In particular, no draft angle is required. By introducing the sliding elements, in particular radially into the base body, a through channel can be easily formed, and by removing the sliding elements again, the injection molded part can be easily demoulded subsequently. Preferably, the sliding elements are introduced radially, i.e., into the injection mold through the contact surface on the equatorial plane. The sliding elements are injection molded during the injection molding process and leave the space in which the flow channel is subsequently formed free of injection molding material. The sliding elements are removed before the base body is molded from the injection mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] According to the invention, the different exemplary features described above can be combined with one another, as long as this makes technical sense and is suitable. Further features, advantages and embodiments of the invention are derived from the following description of the exemplary embodiments illustrated in the accompanying drawings. In the drawings:

[0033] Figure 1 shows a perspective exploded view of a valve body according to the invention, which according to a preferred exemplary embodiment has a base body and a separate cover,

[0034] Figure 2 Shows Figure 1 a perspective bottom view of the illustrated substrate; and

[0035] Figure 3 Shows Figure 1 A perspective view of the cover shown.

[0036] In principle, identical components are provided with the same reference numerals in the figures. DETAILED DESCRIPTION

[0038] Figure 1 The valve body of the valve for the coolant system is shown in the form of an exploded view, wherein the valve body comprises a base body 100 and a cover 200. In the assembled state, the cover 200 closes the opening 16 of the base body 100. In this way, the valve body is completed.

[0039] In the exemplary embodiment shown, the base body 100 comprises a drive shaft 10, which is provided with teeth. The teeth are used to mesh with a driver, which can be configured as an electric motor. Preferably, the motor is a servo motor or a stepper motor.

[0040] The base body 100 comprises a contact surface 11, which is designed to abut against a sealing device of a valve housing of a valve. The contact surface 11 is located on the spherical envelope surface. In other words, the contact surface 11 is spherical. However, the contact surface 11 does not completely cover the spherical envelope surface, but only extends in a region.

[0041] Specifically, the contact surface is composed of a plurality of sealing portions 12 and sliding portions 13. Therefore, the sealing portion 12 extends in an annular manner around the channel opening 51 of the through channel 50 extending through the valve body. Preferably, the channel opening 51 completely forms a circular opening on the base body 100. The sealing portion 12 of the contact surface 11 extends in an annular manner around the channel opening 51.

[0042] Each sliding portion 13 is located between the respective annular sealing portions 12. The sliding portion 13 extends along the equatorial plane of the base 100. The sliding portion 13 substantially forms a belt extending concentrically around the drive shaft 10.

[0043] In the context of the present invention, a plane extending perpendicularly or orthogonally relative to the axis of rotation of the base body 100 is referred to as the equatorial plane. The axis of rotation of the base body 100 corresponds to the center axis of the drive shaft 10. In each case, the equatorial plane preferably passes through the center point of the passage opening 51. The equatorial plane substantially subdivides the valve body into a proximal drive hemisphere and a distal drive hemisphere. The drive shaft 10 is arranged on the proximal drive hemisphere. In contrast, the distal drive hemisphere comprises an opening 16 extending parallel to the equatorial plane. The opening 16 is closed by a cover 200.

[0044] The sealing part 12 and the sliding part 13 are formed by the contact surface 11 and are located on the spherical envelope surface. In other words, the sealing part and the sliding part are arched along the spherical surface. The center of the spherical envelope surface is located at the intersection of the equatorial plane and the rotation axis.

[0045] from Figure 1 It can be clearly seen in the figure that the height or "bandwidth" of the sliding part 13 is smaller than the diameter of the channel opening 51, specifically smaller than the diameter or inner diameter of the sealing part 12. In the area between adjacent sealing parts 12 located outside the sliding part 13, the base body is recessed or does not fill the spherical surface envelope. Instead, overflow areas 17 are provided in these areas, through which coolant can flow during the valve switching process. It can be said that the overflow area 17 forms a bypass connection between the two connecting channels of the valve housing if the connecting channel is not sealed with the sealing part 12 and is therefore connected to the through-channel 50.

[0046] In the exemplary embodiment shown in the figure, the base body 100 is configured as an injection molded part. During the injection molding process, a separation ridge 14 is formed, which extends through the sliding part 13 in the valve body. Specifically, the separation ridge 14 extends through the sliding part 13 parallel to the rotation axis. Therefore, there is no separation ridge 14 on the sealing part 12 of the contact surface 11. Therefore, the sealing part 12 is very smooth and can achieve a good and reliable seal with the sealing device of the valve housing.

[0047] The separating ridge 14 is preferably arranged in a groove which extends through the sliding part 13 parallel to the axis of rotation of the base body 100. The groove may comprise a substantially V-shaped cross section. The separating ridge 13 is sunken over the entire circumference in the groove, ie it does not protrude beyond the contact surface 11.

[0048] In the exemplary embodiment shown in the figures, the valve body has in each case two through-channels 50. Each through-channel 50 extends into a valve half, wherein the valve halves are separated by a dividing wall 15 which extends along the axis of rotation of the base body 100. Figure 2 Specifically, it can be seen that the partition wall 15 extends to an opening 16, which is substantially formed at the bottom of the base body 100. Figure 2 It is clearly shown that the through-channel 50 in the base body 100 is not completely closed. Instead, the through-channel 50 is accessible via the opening 16. This accessibility allows the base body 100 to be manufactured with great geometrical freedom in an injection molding process.

[0049] Specifically, in this way, a through-channel 50 with a uniform cross-sectional diameter can be created during the injection molding process. During the production process, preferably four sliding elements are introduced into the injection mold, wherein the sliding elements are inserted into the injection mold radially relative to the axis of rotation of the base body 100. The base body 100 is then injection molded. After the injection molding, the sliding elements are moved radially to the outside, so that the channel opening 51 and the through-channel 50 are formed. Figure 2 As is clearly shown, the through passage 50 can be opened or accessed through the opening 16. To close the through passage 50, the through passage 50 is made tubular and a cover 200 is inserted, such as Figure 3 shown.

[0050] The cover 200 is also produced by injection molding. In this way, a flow guide profile 20 is formed, and the configuration of the flow guide profile 20 is basically the same as the flow guide profile 20 of the base body 100. Specifically, the flow guide profile 20 of the cover 200 has two legs 21, and the legs 21 generally include a curved inner surface 23. Preferably, the curved inner surface 23 is a circular cross-sectional profile.

[0051] The cover forms a gap 22 between the two legs 21. The gap 22 has a gap width which corresponds substantially to the thickness or width of the partition wall 15. In this way, the cover 200 can be inserted into the opening 16 of the base body 100 so that the gap 22 receives the partition wall 15 therein. In this case, the legs 21 preferably extend into the base body 100 so that the curved inner surfaces 23 of the legs 21 of the cover 200 merge flush into the curved inner surface of the flow guide profile 20 of the base body 100. In other words, the flow guide profile 20 of the cover 200 and the flow guide profile 20 of the base body 100 form at least one, preferably two, tubular through-channels 50 in the assembled state.

[0052] In the assembled state of the valve body, the cover 200 is preferably completely arranged in the opening 16 of the base 100. Preferably, the connection between the cover 200 and the base 100 uses a welding method. Specifically, the cover 200 can be connected to the base 100 by hot gas welding, ultrasonic welding or laser welding. In this case, it is preferred that the cover 200 is sealed with the base 100 over the entire circumference.

[0053] The valve body is preferably inserted into a valve, the valve housing of which has a plurality of, in particular four, connecting channels, which are arranged so that the channel opening 51 of the through-channel 50 is flush with the connecting channel. Thus, each of the two connecting channels of the valve housing can be connected to each other by the through-channel 50. Preferably, each connecting channel of the valve housing comprises a sealing device, which is pressed against the contact surface 11, in particular completely seals with the sealing portion 12 of the contact surface 11. Thus, in the switching position in which the coolant flows through the through-channel 50, there is a high degree of sealing between the sealing device of the valve housing and the sealing portion 12 of the contact surface 11.

[0054] In order to switch the valve, i.e. in order to direct the coolant flow to the other connecting channel, the valve body is rotated. Specifically, the drive acting on the drive shaft 10 is activated. As a result, the valve body is rotated about its axis of rotation. In this way, the channel opening 51 is moved to a position in which it is no longer flush with the connecting channel. During the switching operation, the contact surface 11 of the valve body slides on the sealing device in the valve housing. Specifically, the sliding part 13 of the contact surface 11 rubs on the sealing device. Since the contact surface 11 is very smooth, specifically because the dividing ridge 14 is sunken in the groove and lies on the spherical surface, a very uniform and bump-free movement can be achieved, which can be achieved with little energy consumption.

[0055] If the connecting opening of the valve housing is now moved into the region of the sliding part 13 of the contact surface 11, the fluid can also flow from the connecting channel into the overflow area 17. Preferably, the diameter of the connecting channel corresponds to the diameter of the channel opening 51 or the through-channel 50. Since the height of the sliding part 13 is smaller than the diameter of the channel opening 51, a flow path is formed from the connecting channel into the overflow area 17. Even during the switching operation, the coolant flowing through the coolant system is therefore not completely blocked by the valve body, but can at least partially pass over the base body 100 or at least partially pass over the valve body into other connecting channels. In this way, pressure peaks caused by a brief complete blockage of the coolant flow are avoided.

[0056] Once the passage opening 51 of the adjacent through-channel 50 overlaps with the connecting passage of the valve housing, the sealing device of the valve housing is completely sealed with the sealing portion 12 of the contact surface. At this time, the coolant flow no longer flows through the valve body, but only flows through the through-channel 50.

[0057] Reference numerals

[0058] 10-Drive shaft

[0059] 11-Contact surface

[0060] 12- Sealing part

[0061] 13- Sliding part

[0062] 14-Separation Ridge

[0063] 15-Partition wall

[0064] 16-Opening

[0065] 17- Overflow area

[0066] 20-Flow guide profile

[0067] 21- Outrigger

[0068] 22-Gap

[0069] 23-Inner surface

[0070] 50-Through Passage

[0071] 51-Channel entrance

[0072] 100-Matrix

[0073] 200-cap

Claims

1. A valve body for a coolant system, comprising: - at least one tubular through-channel (50) for a coolant, and - a base body (100) which is designed to be rotatable around a rotation axis by a drive device and has a contact surface (11) for abutting against a sealing device of a valve housing of a valve, and has at least two sealing parts (12) and at least two sliding parts (13) located on a spherical surface, wherein the base body (100) is divided by an equatorial plane arranged orthogonally to the axis of rotation, The invention is characterized in that the base body (100) comprises an opening (16) arranged parallel to the equatorial plane and closed by a cover (200), wherein a through-channel (50) is formed by the base body (100) and the cover (200).

2. The valve body according to claim 1, characterized in that: The through passage (50) has a uniform cross-sectional diameter.

3. The valve body according to claim 1 or 2, characterized in that: The height of the sliding portion (13) is smaller than the diameter of the sealing portion (12), with the result that during the switching operation of the valve, the coolant can flow through the base body (100).

4. Valve body according to any one of the preceding claims, characterized in that The cover (200) is connected to the base (100) in an integrally bonded and / or adhered manner, specifically by welding or cutting and pasting.

5. Valve body according to any one of the preceding claims, characterized in that The base body (100) has a partition wall (15) which extends along the rotation axis of the drive shaft (10) and divides the rotor into two half-valves, wherein a through-channel (50) is formed in each half-valve.

6. The valve body according to claim 5, characterized in that The cover (200) has a flow-guiding profile (20) with two parallel legs (21) and an extended gap (22) between the two legs for receiving a partition wall (15).

7. The valve body according to claim 6, characterized in that The flow-guiding profile (20) of the cover (200), in particular each leg (21), has a curved inner surface (23) which merges flush into the curved inner surface of the flow-guiding profile of the base body (100) and defines a through-channel (50).

8. Valve body according to any one of the preceding claims, characterized in that Each sliding portion (13) of the contact surface (11) is further divided by a dividing ridge (14) extending parallel to the rotation axis (10).

9. The valve body according to claim 8, characterized in that The dividing ridge (14) is arranged to be completely sunken into the groove.

10. Valve body according to any one of the preceding claims, characterized in that The sealing portion (12) extends in an annular manner around the passage opening (51).

11. A valve with a valve housing, the valve housing having at least two connecting channels, in particular four connecting channels, the valve also having a valve body as claimed in any one of the preceding claims, the valve body being rotatably arranged in the valve housing and being positionable so that its through channel (50) connects the two connecting channels.

12. The valve according to claim 11, characterized in that Each connecting channel is assigned a sealing device, which seals with the valve body, in particular with a sealing portion (12) of the contact surface (11).

13. The method for manufacturing a valve body according to any one of claims 1 to 10, wherein the base body (100) and the cover (200) are each formed by an injection molding process and then connected to each other.

14. The method according to claim 13, characterized in that The cover (200) is connected to the base (100) by welding, in particular hot air welding, ultrasonic welding or laser welding, or by cutting and pasting.

15. The method according to claim 13 or 14, characterized in that During the injection molding of the base body (100), at least two sliding elements are introduced, in particular radially, into the injection mold and removed after the base body (100) has cooled, wherein the sliding elements form a flow-guiding contour of the base body (100), including the channel opening (51).

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