A valve device

Abstract

A valve device includes a valve body assembly and a valve core. The valve body assembly includes a valve body having a first port and a port wall facing the valve core, the port wall being located on the outer periphery of the first port. The valve device also includes an elastic element and a sealing seat. Along the radial direction of the valve core, the elastic element includes a first wall and a second wall disposed opposite to each other, and the sealing seat includes a third wall and a fourth wall disposed opposite to each other. The elastic element is fixedly connected to the valve body. The first wall abuts against and seals the port wall, the second wall abuts against and seals the third wall, and at least a portion of the fourth wall abuts against and seals the valve core. The sealing seat includes a protrusion, at least two of which protrude from the third wall. Along the radial direction of the first port, at least a portion of the elastic element is located between two of the protrusions. This arrangement helps to reduce the risk of seal failure between the elastic element and the sealing seat.

Description

Technical Field

[0001] This application relates to the field of fluid control technology, specifically to a vehicle valve device. Background Technology

[0002] The valve device includes a valve body assembly. In related technologies, the valve body assembly includes a first ring seat, which has a valve cavity and a first port. An elastic element and a sealing seat are provided between the valve cavity and the first port. The elastic element is pressed between the valve port wall and the sealing seat, and the sealing seat is pressed between the elastic element and the valve core. The elastic element abuts against the valve port wall to form a seal, the elastic element abuts against the sealing seat to form a seal, and the sealing seat abuts against the valve core to form a seal. During the operation of the valve device, a seal failure may occur between the elastic element and the sealing seat, causing the first port to connect with the valve cavity. Therefore, it is necessary to design a valve device that can help reduce the risk of seal failure between the elastic element and the sealing seat. Utility Model Content

[0003] The purpose of this application is to provide a valve device that helps reduce the risk of seal failure between the elastic element and the sealing seat.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] A valve device includes a valve body assembly and a valve core. The valve body assembly includes a valve body having a first port. The valve body includes a port wall facing the valve core and located on the outer periphery of the first port. The valve device further includes an elastic element and a sealing seat. Along the radial direction of the valve core, the elastic element includes a first wall and a second wall disposed opposite to each other. The sealing seat includes a third wall and a fourth wall disposed opposite to each other. The elastic element is fixedly connected to the valve body. The first wall abuts against and seals the port wall, the second wall abuts against and seals the third wall, and at least a portion of the fourth wall abuts against and seals the valve core. The sealing seat includes a protrusion, at least two of which protrude from the third wall. Along the radial direction of the first port, at least a portion of the elastic element is located between two of the protrusions.

[0006] In one technical solution provided in this application, along the radial direction of the valve core, the elastic element includes a first wall and a second wall arranged opposite to each other, and the sealing seat includes a third wall and a fourth wall arranged opposite to each other. The elastic element is fixedly connected to the valve body. The first wall abuts against and seals the valve port wall, the second wall abuts against and seals the third wall, and at least a portion of the fourth wall abuts against and seals the valve core. A protrusion protrudes from the third wall, and along the radial direction of the first port, at least a portion of the elastic element is located between two of the protrusions. With this arrangement, when the elastic element tends to shift relative to the valve body, the fixed connection between the elastic element and the valve body reduces the risk of the elastic element shifting relative to the valve body, which is beneficial to reducing the risk of sealing failure between the elastic element and the valve body. When the sealing seat tends to shift relative to the valve body, the elastic element can limit the sealing seat, thereby reducing the shift of the sealing seat relative to the valve body, which is beneficial to reducing the risk of sealing failure between the elastic element and the sealing seat. Attached Figure Description

[0007] Figure 1 This is a three-dimensional structural schematic diagram of one embodiment of the valve device provided in this application;

[0008] Figure 2 This is a cross-sectional structural diagram of the valve device;

[0009] Figure 3 yes Figure 2 A magnified structural diagram at point A;

[0010] Figure 4 yes Figure 2 A schematic diagram of the cross-sectional structure along the BB direction;

[0011] Figure 5 This is a schematic diagram of the structure of the sealing seat under the radial outward displacement of the first opening;

[0012] Figure 6 This is an exploded structural diagram of the elastic element, sealing seat, and valve body;

[0013] Figure 7 This is an exploded structural diagram of the elastic element, sealing seat, and valve body.

[0014] Figure label:

[0015] 1. Valve components; 2. Valve body assembly; 3. Valve core; 4. Drive assembly;

[0016] 20. Valve cavity; 21. First ring seat; 22. Valve body; 23. Elastic element; 24. Sealing seat; 25. Second ring seat; 26. First position; 27. Second position;

[0017] 210. The first port; 211. The valve port wall; 212. The riveted part; 213. The first convex rib; 214. The second convex rib; 215. The body part; 231. The first wall; 232. The second wall; 241. The convex part; 243. The third wall; 244. The fourth wall;

[0018] 2411. The first convex part; 2412. The second convex part; 2413. The fifth wall. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0020] Combination Figures 1 to 7 The diagram illustrates one embodiment of a valve device. In this embodiment, the valve device includes a valve component 1, a valve body assembly 2, a valve core 3, and a drive assembly 4. The valve body assembly 2 has a valve cavity 20 and a first port 210. The valve core 3 is rotatable within the valve cavity 20, and the valve cavity 20 is in communication with the first port 210. The valve body 22 includes a valve port wall 211 facing the valve core 3 and located on the outer periphery of the first port 210. The valve device also includes an elastic element 23 and a sealing seat 24. Along the radial direction of the valve core 3, the elastic element 23 includes a first wall 23 disposed opposite to the valve core 3. 1 and the second wall 232, the sealing seat 24 includes a third wall 243 and a fourth wall 244 arranged opposite to each other, the elastic element 23 is fixedly connected to the valve body 22, the first wall 231 abuts against and seals the valve port wall 211, the second wall 232 abuts against and seals the third wall 243, and at least a portion of the fourth wall 244 abuts against and seals the valve core 3; the sealing seat 24 includes a protrusion 241, and at least two protrusions 241 are provided; the protrusions 241 protrude outward from the third wall 243 along the radial direction of the first port 210, and at least a portion of the elastic element 23 is located between two of the protrusions 241.

[0021] The protrusion 241 protrudes outward from the third wall 243 along the radial direction of the first opening 210, and at least part of the elastic element 23 is confined between two of the protrusions 241. With this arrangement, when there is a tendency for relative displacement between the elastic element 23 and the sealing seat 24, for example, when there is a pressure difference between the valve chamber 20 and the first opening 210, the elastic element 23 will deform. Along the radial direction of the first opening 210, the protrusion 241 and the elastic element 23 can be relatively confined, and the relative position change between the elastic element 23 and the sealing seat 24 is small. On the one hand, the second wall 232 and the third wall 243 can maintain a good seal, thereby effectively reducing the risk of seal failure between the elastic element 23 and the sealing seat 24. On the other hand, the offset of the sealing seat 24 relative to the valve body 22 will cause a change in the relative position between the sealing seat 24 and the valve body 22, thereby causing a change in the opening degree of the valve core 3 opening the first opening 210 when the position of the valve core 3 remains unchanged, which in turn causes a change in the fluid regulation curve of the valve device, thus affecting the regulation accuracy.

[0022] Combination Figures 2 to 7 As shown, the elastic member 23 surrounds the first opening 210, the sealing seat 24 surrounds the first opening 210, and the protrusion 241 includes a first protrusion 2411 and a second protrusion 2412. The first protrusion 2411 is annular, and the second protrusion 2412 is annular. The first protrusion 2411 is located on the radial outer side of the elastic member 23, and the second protrusion 2412 is located on the radial inner side of the elastic member 23.

[0023] The first protrusion 2411 is annular, and the second protrusion 2412 is annular. With this arrangement, along the radial direction of the first opening 210, the elastic element 23 is located between the first protrusion 2411 and the second protrusion 2412 throughout the entire circumference. This helps to reduce the degree of deformation of the elastic element 23, thereby further reducing the range of relative displacement change between the second wall 232 and the third wall 243, and thus reducing the risk of sealing failure between the elastic element 23 and the sealing seat 24.

[0024] Combination Figures 4 to 5 As shown, the outer peripheral surface of the valve core 3 is cylindrical, and the valve port wall 211 is arranged parallel to the outer peripheral surface of the valve core 3; specifically, the valve body 22 has a tile-shaped structure, and both the inner and outer peripheral walls of the valve body 22 are part of a cylindrical surface, with the valve port wall 211 located on the inner peripheral wall of the valve body 22.

[0025] The valve port wall 211 is arranged parallel to the outer peripheral surface of the valve core 3. This arrangement can minimize the size of the valve device while ensuring the sealing of the valve device by the elastic element 23 and the sealing seat 24, which is beneficial to the miniaturization of the valve device.

[0026] Furthermore, in combination Figures 4 to 5 As shown, the third wall 243 and the fourth wall 244 are arranged in parallel, and the fourth wall 244 is arranged in parallel with the outer peripheral surface of the valve core 3; specifically, along the axial direction of the first port 210, the thickness of the sealing seat 24 at each position in the circumference remains approximately unchanged, the second wall 232 is arranged in parallel with the first wall 231, and the thickness of the elastic element 23 at each position in the circumference remains approximately unchanged.

[0027] The thickness of the elastic element 23 remains approximately constant at each circumferential position. With this setting, the degree of compression of the elastic element 23 at each circumferential position is approximately the same, and the pressure resistance of the elastic element 23 at each circumferential position is approximately the same. This is beneficial to improving the minimum leakage pressure difference of the elastic element 23, thereby improving the service life of the valve device.

[0028] Furthermore, combining Figures 2 to 5As shown, the second protrusion 2412 includes a fifth wall 2413 along the radial direction of the first opening 210, and the angle between the third wall 243 and the fifth wall 2413 is an obtuse angle. Specifically, the initial state of the sealing seat 24 is a perfect circular ring. The first protrusion 2411 and the second protrusion 2412 are formed by machining. Subsequently, the sealing seat 24 is deformed by heating the mold to form a shape in which the third wall 243 is approximately parallel to the valve port wall 211. During the assembly process of the sealing seat 24 and the valve body 22, the sealing seat 24 is deformed by hot pressing. Afterwards, the sealing seat 24 is assembled between the valve core 3 and the elastic element 23. At the first position 26 where the sealing seat 24 is located, the state of the first protrusion 2411 and the second protrusion 2412 remains unchanged before and after hot pressing deformation, and the distance between the fifth wall 2413 and the elastic element 23 increases. At the second position 27 where the sealing seat 24 is located, after hot pressing deformation, the first protrusion 2411 will rotate outward, the second protrusion 2412 will rotate inward, and the distance between the fifth wall and the elastic element 23 remains approximately unchanged.

[0029] From the direction of the sealing seat 24 towards the elastic member 23, the distance between the fifth wall 2413 and the elastic member 23 increases or remains approximately unchanged; with this arrangement, before hot pressing, the distance between the fifth wall 2413 and the first protrusion 2411 along the circumference of the sealing seat 24 remains approximately unchanged, which facilitates the machining of the sealing seat 24.

[0030] Combination Figures 2 to 5 As shown, the elastic coefficient of the elastic element 23 is greater than that of the sealing seat 24; the material of the elastic element 23 is rubber, and the elastic element 23 is vulcanized and sealed to the valve port wall 211; specifically, the elastic element 23 is vulcanized and fixed to the valve port wall 211.

[0031] The elastic element 23 is vulcanized and sealed to the valve port wall 211. Compared to a separate design where the elastic element 23 is pressed against the valve port wall 211, this configuration provides a better fit between the elastic element 23 and the valve port wall 211, resulting in a better sealing effect. Furthermore, the position of the elastic element 23 is relatively fixed, and the protrusion 241 effectively limits the range of motion of the sealing seat 24 relative to the elastic element 23. This ensures that the contact position between the sealing seat 24 and the valve core 3 is relatively fixed, which is beneficial for ensuring the sealing effect between the sealing seat 24 and the valve core 3.

[0032] Combination Figures 2 to 5 As shown, the coefficient of friction between the elastic element 23 and the sealing seat 24 is greater than the coefficient of friction between the sealing seat 24 and the valve core 3. Specifically, the elastic element 23 is made of rubber, and the sealing seat 24 is made of PTFE (polytetrafluoroethylene). In other embodiments, the sealing seat 24 can also be made of PEEK (polyetheretherketone).

[0033] The coefficient of friction between the elastic element 23 and the sealing seat 24 is greater than the coefficient of friction between the sealing seat 24 and the valve core 3. With this setting, the friction between the valve core 3 and the sealing seat 24 is smaller during the rotation of the valve core 3 relative to the sealing seat 24, which helps to reduce the rotational resistance of the valve core 3.

[0034] Combination Figures 2 to 5 As shown, along the radial direction of the valve core 3, at least part of the projection of the second wall 232 on the outer periphery of the valve core 3 coincides with the projection of the fourth wall 244 on the outer periphery of the valve core 3. With this arrangement, the pressure borne by the elastic element 23 and the sealing seat 24 is approximately along the radial direction of the valve core 3, which can reduce the tendency of the elastic element 23 and the sealing seat 24 to generate relative displacement, and is conducive to maintaining the stability of the sealing position of the elastic element 23 and the sealing seat 24.

[0035] Furthermore, in combination Figures 2 to 5 As shown, the projection of the second wall 232 on the outer periphery of the valve core 3 covers the projection of the fourth wall 244 on the outer periphery of the valve core 3, or the projection of the fourth wall 244 on the outer periphery of the valve core 3 covers the projection of the second wall 232 on the outer periphery of the valve core 3; specifically, the radial interface of the sealing seat 24 is a trapezoidal structure with a symmetrical structure.

[0036] The projection of the second wall 232 on the outer periphery of the valve core 3 covers the projection of the fourth wall 244 on the outer periphery of the valve core 3, or the projection of the fourth wall 244 on the outer periphery of the valve core 3 covers the projection of the second wall 232 on the outer periphery of the valve core 3. This arrangement can maintain the radial pressure of the elastic member 23 and the sealing seat 24 on the valve core 3 within the contact position range between the fourth wall 244 and the valve core 3, which can further reduce the tendency of the elastic member 23 and the sealing seat 24 to generate relative displacement, and is conducive to maintaining the stability of the sealing position of the elastic member 23 and the sealing seat 24.

[0037] Combination Figures 2 to 7 As shown, the valve body 22 includes a first rib 213 and a second rib 214. The first rib 213 extends from the body portion 215 toward the valve core 3, and the second rib 214 extends from the body portion 215 toward the valve core 3. The first rib 213 is located radially inner to the sealing seat 24, and the second rib 214 is located radially outer to the sealing seat 24. Specifically, both the first rib 213 and the second rib 214 are annular along the axial direction of the first port 210. The protrusion length of the first rib 213 relative to the valve port wall 211 remains approximately constant, and the protrusion length of the second rib 214 relative to the valve port wall 211 remains approximately constant.

[0038] The first rib 213 is located radially inside the sealing seat 24, and the second rib 214 is located radially outside the sealing seat 24. With this arrangement, along the radial direction of the first opening 210, the first rib 213 and the second rib 214 can work together to limit the sealing seat 24, further limiting the offset range of the sealing seat 24 relative to the valve body 22, thereby limiting the degree of deformation of the elastic element 23, which helps to reduce the risk of sealing failure of the elastic element 23 and the sealing seat 24.

[0039] Combination Figures 2 to 5 and Figure 7 As shown, the valve body assembly 2 includes a riveting part 212 and a body part 215. The riveting part 212 and the body part 215 are fixedly connected or are an integral structure. Generally along the radial direction of the valve core 3, the riveting part 212 is closer to the valve core 3 than the valve body 22. At least a portion of the sealing seat 24 is limited between the elastic member 23 and the riveting part 212, and at least a portion of the riveting part 212 abuts against the sealing seat 24. Specifically, the riveting part 212 protrudes from the valve port wall 211 in the direction of the valve core 3, and the riveting part 212 bends in the direction of the sealing seat 24 and abuts against the sealing seat 24.

[0040] The riveting part 212 protrudes from the wall of the valve cavity 20 toward the valve core 3. The riveting part 212 abuts against the sealing seat 24, and the sealing seat 24 is limited between the elastic member 23 and the riveting part 212. With this arrangement, the sealing seat 24 is limited and fixed to the wall of the valve cavity 20, which helps to stabilize the position of the sealing seat 24 and thus ensure the sealing effect between the sealing seat 24 and the valve core 3.

[0041] Combination Figures 2 to 5 As shown, the valve body assembly 2 also includes a first ring seat 21, which is annular. The valve core 3 is located radially inside the first ring seat 21. Along the axial direction of the valve core 3, one end of the valve body 22 is fixed, limited, or integrally connected to the first ring seat 21. Specifically, the valve body assembly 2 also includes a second ring seat 25. The valve core 3 is cylindrical. One end of the valve body 22 is laser-welded to the first ring seat 21, and the other end of the valve body 22 is welded to the second ring seat 25.

[0042] The valve body 22 is arc-shaped, and the valve port wall 211 is located on the inner side of the arc of the valve body 22 along the axial direction of the valve core 3. One end of the valve body 22 is fixed, limited, or integrally connected with the first ring seat 21. With this configuration, the valve body 22 and the first ring seat 21 are separately configured. When assembling the valve component 1, the valve body 22 and the valve core 3 can be assembled together, which facilitates the adjustment of the sealing surface between the valve core 3 and the sealing seat 24. Then, the valve body 22 and the first ring seat 21 are welded and fixed, which facilitates the assembly of the valve core 3.

[0043] Combination Figures 2 to 5As shown, there are at least two valve bodies 22, and the arc of the valve body 22 is a minor arc; specifically, when assembling the valve component 1, along the axial direction of the elastic element 23, the valve body 22 is brought closer to the valve core 3 until the sealing seat 24 abuts against the outer wall of the valve core 3.

[0044] At least two valve bodies 22 are provided, and the arc of the valve body 22 is a minor arc. This arrangement allows the sealing seat 24 to abut against the outer wall of the valve core 3 along the axial direction of the elastic element 23. During this process, the radial deformation of the elastic element 23 and the sealing seat 24 is small, and the probability of relative slippage between the elastic element 23 and the sealing seat 24 is small. This helps to reduce the degree of radial deformation of the elastic element 23 and the sealing seat 24 and ensure the sealing effect of the elastic element 23 and the sealing seat 24.

[0045] It is worth noting that "roughly parallel" as described above refers to the acute angle between the two directions being less than 10°, while "roughly perpendicular" refers to the acute angle between the two directions being greater than 80°.

[0046] The statement that the thickness / spacing / length / pressure resistance / compression degree are roughly the same as described above means that the error range is within 10%.

[0047] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features of the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this description.

[0048] It should be noted that the above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A valve device, characterized in that: The valve body assembly (2) includes a valve body (22) and a valve core (3). The valve body assembly (2) includes a valve body (22) having a first port (210). The valve body (22) includes a port wall (211) facing the valve core (3) and the port wall (211) is located on the outer periphery of the first port (210). The valve device further includes an elastic element (23) and a sealing seat (24). Along the radial direction of the valve core (3), the elastic element (23) includes a first wall (231) and a second wall (232) arranged opposite to each other, and the sealing seat (24) includes a third wall (243) and a fourth wall (244) arranged opposite to each other. The elastic element (23) is fixedly connected to the valve body (22). The first wall (231) abuts against and seals the valve port wall (211), the second wall (232) abuts against and seals the third wall (243), and at least part of the fourth wall (244) abuts against and seals the valve core (3). The sealing seat (24) includes a protrusion (241), and at least two protrusions (241) are provided; The protrusion (241) protrudes from the third wall (243) radially along the first opening (210), and at least a portion of the elastic element (23) is located between two of the protrusions (241).

2. The valve device according to claim 1, characterized in that, The elastic element (23) surrounds the first opening (210), and the sealing seat (24) surrounds the first opening (210); The protrusion (241) includes a first protrusion (2411) and a second protrusion (2412). The first protrusion (2411) is annular, and the second protrusion (2412) is annular. The first protrusion (2411) is located on the radial outer side of the elastic member (23), and the second protrusion (2412) is located on the radial inner side of the elastic member (23).

3. The valve device according to claim 2, characterized in that, The elastic element (23) is made of rubber, and the elastic element (23) is fixedly connected and sealed to the valve port wall (211) by a vulcanization process.

4. The valve device according to claim 3, characterized in that, The coefficient of friction between the elastic element (23) and the sealing seat (24) is greater than the coefficient of friction between the sealing seat (24) and the valve core (3). The material of the sealing seat (24) includes polytetrafluoroethylene or polyetheretherketone.

5. The valve device according to any one of claims 2-4, characterized in that, The outer peripheral surface of the valve core (3) is cylindrical, and the valve port wall (211) is arranged parallel to the outer peripheral surface of the valve core (3).

6. The valve device according to claim 5, characterized in that, The third wall (243) is arranged parallel to the fourth wall (244), and the fourth wall (244) is arranged parallel to the outer peripheral surface of the valve core (3).

7. The valve device according to claim 5, characterized in that, The second protrusion (2412) includes a fifth wall (2413) along the radial direction of the sealing seat (24), and the angle between the third wall (243) and the fifth wall (2413) is an obtuse angle.

8. The valve device according to claim 6, characterized in that, The second protrusion (2412) includes a fifth wall (2413) along the radial direction of the sealing seat (24), and the angle between the third wall (243) and the fifth wall (2413) is an obtuse angle.

9. The valve device according to any one of claims 1-4, characterized in that, Along the radial direction of the valve core (3), at least a portion of the projection of the second wall (232) on the outer periphery of the valve core (3) coincides with the projection of the fourth wall (244) on the outer periphery of the valve core (3).

10. The valve device according to claim 5, characterized in that, Along the radial direction of the valve core (3), at least a portion of the projection of the second wall (232) on the outer periphery of the valve core (3) coincides with the projection of the fourth wall (244) on the outer periphery of the valve core (3).

11. The valve device according to any one of claims 6-8, characterized in that, Along the radial direction of the valve core (3), at least a portion of the projection of the second wall (232) on the outer periphery of the valve core (3) coincides with the projection of the fourth wall (244) on the outer periphery of the valve core (3).

12. The valve device according to claim 9, characterized in that, The projection of the second wall (232) on the outer periphery of the valve core (3) covers the projection of the fourth wall (244) on the outer periphery of the valve core (3), or the projection of the fourth wall (244) on the outer periphery of the valve core (3) covers the projection of the second wall (232) on the outer periphery of the valve core (3).

13. The valve device according to claim 10, characterized in that, The projection of the second wall (232) on the outer periphery of the valve core (3) covers the projection of the fourth wall (244) on the outer periphery of the valve core (3), or the projection of the fourth wall (244) on the outer periphery of the valve core (3) covers the projection of the second wall (232) on the outer periphery of the valve core (3).

14. The valve device according to claim 11, characterized in that, The projection of the second wall (232) on the outer periphery of the valve core (3) covers the projection of the fourth wall (244) on the outer periphery of the valve core (3), or the projection of the fourth wall (244) on the outer periphery of the valve core (3) covers the projection of the second wall (232) on the outer periphery of the valve core (3).

15. The valve device according to any one of claims 1-4, characterized in that, The valve body (22) includes a first rib (213), a second rib (214), and a body portion (215). The first rib (213) extends from the body portion (215) toward the valve core (3), and the second rib (214) extends from the body portion (215) toward the valve core (3). The first rib (213) is located radially inside the sealing seat (24), and the second rib (214) is located radially outside the sealing seat (24).

16. The valve device according to claim 5, characterized in that, The valve body (22) includes a first rib (213), a second rib (214), and a body portion (215). The first rib (213) extends from the body portion (215) toward the valve core (3), and the second rib (214) extends from the body portion (215) toward the valve core (3). The first rib (213) is located radially inside the sealing seat (24), and the second rib (214) is located radially outside the sealing seat (24).

17. The valve device according to any one of claims 6-8, characterized in that, The valve body (22) includes a first rib (213), a second rib (214), and a body portion (215). The first rib (213) extends from the body portion (215) toward the valve core (3), and the second rib (214) extends from the body portion (215) toward the valve core (3). The first rib (213) is located radially inside the sealing seat (24), and the second rib (214) is located radially outside the sealing seat (24).

18. The valve device according to claim 9, characterized in that, The valve body (22) includes a first rib (213), a second rib (214), and a body portion (215). The first rib (213) extends from the body portion (215) toward the valve core (3), and the second rib (214) extends from the body portion (215) toward the valve core (3). The first rib (213) is located radially inside the sealing seat (24), and the second rib (214) is located radially outside the sealing seat (24).

19. The valve device according to claim 10, characterized in that, The valve body (22) includes a first rib (213), a second rib (214), and a body portion (215). The first rib (213) extends from the body portion (215) toward the valve core (3), and the second rib (214) extends from the body portion (215) toward the valve core (3). The first rib (213) is located radially inside the sealing seat (24), and the second rib (214) is located radially outside the sealing seat (24).

20. The valve device according to claim 11, characterized in that, The valve body (22) includes a first rib (213), a second rib (214), and a body portion (215). The first rib (213) extends from the body portion (215) toward the valve core (3), and the second rib (214) extends from the body portion (215) toward the valve core (3). The first rib (213) is located radially inside the sealing seat (24), and the second rib (214) is located radially outside the sealing seat (24).

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