Nine-way valve

Abstract

The utility model provides a nine-way valve which comprises a valve body comprising first to ninth valve ports; the valve element is located in the valve body and can rotate among a plurality of angle positions relative to the valve body, the valve element comprises a plurality of areas corresponding to the angle positions in the circumferential direction of the valve element, each area comprises sub-areas corresponding to the first valve port to the ninth valve port, in each area, the valve element comprises a flow channel, and at least two sub-areas of each area are communicated through the flow channel; and the valve ports corresponding to the two sub-areas are communicated. Through the structural design of the nine-way valve, switching among a plurality of working modes can be achieved, the complex structure that a plurality of three-way valves are matched with a four-way valve and the like in the prior art can be replaced, assembly is easy, cost is low, control is easy, the pipeline structure can be simplified, and the integration degree of products is improved.

Description

Technical Field

[0001] The present disclosure relates to a multi-way valve in a thermal management system of a new energy electric vehicle, and more particularly to a nine-way valve in a thermal management system of a new energy electric vehicle. Background Art

[0002] Currently, in the conventional thermal management system of new energy vehicles, multiple three-way valves are usually used in combination with four-way valves to achieve switching and control between multiple working modes. However, this method not only has a large number of components, difficult assembly, high cost, large weight, difficult control, and waste of space, but also requires a large number of pipelines connecting the valves, resulting in a large number of risk points of failure, and at the same time increasing the complexity of the vehicle layout. Nowadays, lightweight and highly integrated thermal management systems have become an industry trend. As an important component in the thermal management system, the characteristics of the valve directly affect the performance of the system.

[0003] Therefore, how to design a multi-way valve to replace the combination of multiple three-way valves and four-way valves to simplify the thermal management system of new energy vehicles, reduce the cost of the entire system, make its assembly simple, easy to control, and more miniaturized and lightweight, while achieving switching between multiple working modes, has become an urgent problem to be solved. Summary of the Utility Model

[0004] The purpose of the present disclosure is to provide a nine-way valve, which can not only achieve switching between multiple working modes, but also replace the complex structures such as multiple three-way valves and four-way valves in the prior art, with simple assembly, low cost, easy to control, and can simplify the pipeline structure, and improve the integration of the product.

[0005] The present disclosure provides a nine-way valve, which includes: a valve body including first to ninth valve ports; a valve core located in the valve body and capable of rotating between multiple angular positions relative to the valve body. The valve core includes multiple regions corresponding to the multiple angular positions along its circumferential direction. Each region includes sub-regions A12, A13, A22, A23, A32, A33, A42, A43, A31 corresponding to the first to ninth valve ports. Wherein, in each region, the valve core includes a flow channel, and at least two sub-regions of each region are connected through the flow channel, so that the valve ports corresponding to the two sub-regions are connected.

[0006] Through the above structural design of the nine-way valve, the present disclosure can not only achieve switching between multiple working modes, but also has simple assembly, low cost, easy to control, can simplify the pipeline structure, and improve the integration of the product.

[0007] In one or more embodiments, the multiple angular positions include first to sixth angular positions, and the multiple regions include first to sixth regions.

[0008] With the above arrangements, the present disclosure can achieve the switching of the nine-way valve among six working modes, and can replace the complex structures such as multiple three-way valves and four-way valves in the prior art, improving the integration of the product.

[0009] In one or more embodiments, the valve body has a top wall, a bottom wall, and side walls located between the top wall and the bottom wall. The first to ninth valve ports are located on the side walls and in the same plane.

[0010] With the above arrangements of the first to ninth valve ports, the nine valve ports can be directly docked and communicated with the flow channels on the flow channel plate, simplifying the pipeline layout and optimizing the system structure.

[0011] In one or more embodiments, at the first angular position: the sub-regions A12 and A13 in the first region of the valve core are communicated so that the first valve port is communicated with the second valve port; the sub-regions A22 and A23 in the first region of the valve core are communicated so that the third valve port is communicated with the fourth valve port; the sub-regions A32 and A42 in the first region of the valve core are communicated so that the fifth valve port is communicated with the seventh valve port; the sub-regions A33 and A43 in the first region of the valve core are communicated so that the sixth valve port is communicated with the eighth valve port; and the ninth valve port is not communicated with other valve ports.

[0012] In one or more embodiments, at the second angular position: the sub-regions A12 and A13 in the second region of the valve core are communicated so that the first valve port is communicated with the second valve port; the sub-regions A22 and A23 in the second region of the valve core are communicated so that the third valve port is communicated with the fourth valve port; the sub-regions A32 and A31 in the second region of the valve core are communicated so that the fifth valve port is communicated with the ninth valve port; the sub-regions A33 and A43 in the second region of the valve core are communicated so that the sixth valve port is communicated with the eighth valve port; and the seventh valve port is not communicated with other valve ports.

[0013] In one or more embodiments, at the third angular position: the sub-regions A12 and A13 in the third region of the valve core are communicated so that the first valve port is communicated with the second valve port; the sub-regions A22 and A23 in the third region of the valve core are communicated so that the third valve port is communicated with the fourth valve port; the sub-regions A32 and A33 in the third region of the valve core are communicated so that the fifth valve port is communicated with the sixth valve port; the sub-regions A42 and A43 in the third region of the valve core are communicated so that the seventh valve port is communicated with the eighth valve port; and the ninth valve port is not communicated with other valve ports.

[0014] In one or more embodiments, at the fourth angular position: the A12 and A13 sub-regions in the fourth region of the valve core communicate with each other so that the first valve port communicates with the second valve port; the A22 and A23 sub-regions in the fourth region of the valve core communicate with each other so that the third valve port communicates with the fourth valve port; the A32 and A33 sub-regions in the fourth region of the valve core communicate with each other so that the fifth valve port communicates with the sixth valve port; the A31 and A43 sub-regions in the fourth region of the valve core communicate with each other so that the eighth valve port communicates with the ninth valve port; and the seventh valve port does not communicate with other valve ports.

[0015] In one or more embodiments, the fourth region of the valve core further includes an A42 sub-region. The A42 sub-region in the fourth region does not communicate with the seventh valve port, and the eighth valve port communicates with the ninth valve port via the A43, A42, A41, and A31 sub-regions.

[0016] In one or more embodiments, at the fifth angular position: the A12 and A22 sub-regions in the fifth region of the valve core communicate with each other so that the first valve port communicates with the third valve port; the A13 and A23 sub-regions in the fifth region of the valve core communicate with each other so that the second valve port communicates with the fourth valve port; the A32 and A31 sub-regions in the fifth region of the valve core communicate with each other so that the fifth valve port communicates with the ninth valve port; the A33 and A43 sub-regions in the fifth region of the valve core communicate with each other so that the sixth valve port communicates with the eighth valve port; and the seventh valve port does not communicate with other valve ports.

[0017] In one or more embodiments, at the sixth angular position: the A12 and A22 sub-regions in the sixth region of the valve core communicate with each other so that the first valve port communicates with the third valve port; the A13 and A23 sub-regions in the sixth region of the valve core communicate with each other so that the second valve port communicates with the fourth valve port; the A32 and A42 sub-regions in the sixth region of the valve core communicate with each other so that the fifth valve port communicates with the seventh valve port; the A33 and A43 sub-regions in the sixth region of the valve core communicate with each other so that the sixth valve port communicates with the eighth valve port; and the ninth valve port does not communicate with other valve ports.

[0018] Through the above settings of the valve core at the first to sixth angular positions, the present disclosure can achieve that when the valve core is at each angular position, the nine-way valve forms four independent and non-crossing fluid circuits, and can realize the switching between six working modes of the nine-way valve by changing the angular position of the valve core, which is easy to control, improves the integration degree, and reduces the occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shows a three-dimensional view of a nine-way valve according to an embodiment of the present disclosure;

[0020] Figure 2 Shows a three-dimensional view of the nine-way valve according to an embodiment of the present disclosure from another perspective, in which the arrangement of the first to ninth valve ports is shown;

[0021] Figure 3 Shows an exploded view of the nine-way valve according to an embodiment of the present disclosure;

[0022] Figure 4 Shows a three-dimensional view of the valve body according to an embodiment of the present disclosure;

[0023] Figure 5A Shows a three-dimensional view of the anti-inner leakage gasket according to an embodiment of the present disclosure;

[0024] Figure 5B Shows a side view of the anti-inner leakage gasket according to an embodiment of the present disclosure;

[0025] Figure 6 Shows a bottom view of the valve body according to an embodiment of the present disclosure, in which the arrangement of the first to ninth valve ports is shown;

[0026] Figure 7 Shows a three-dimensional view of the valve core according to an embodiment of the present disclosure;

[0027] Figure 8A Shows a schematic diagram of the connection of different valve ports of the valve body when the nine-way valve is in the first working mode according to an embodiment of the present disclosure;

[0028] Figure 8B Shows a schematic diagram of the flow channel of the valve core when the nine-way valve is in the first working mode according to an embodiment of the present disclosure;

[0029] Figure 9A Shows a schematic diagram of the connection of different valve ports of the valve body when the nine-way valve is in the second working mode according to an embodiment of the present disclosure;

[0030] Figure 9B Shows a schematic diagram of the flow channel of the valve core when the nine-way valve is in the second working mode according to an embodiment of the present disclosure;

[0031] Figure 10A Shows a schematic diagram of the connection of different valve ports of the valve body when the nine-way valve is in the third working mode according to an embodiment of the present disclosure;

[0032] Figure 10B Shows a schematic diagram of the flow channel of the valve core when the nine-way valve is in the third working mode according to an embodiment of the present disclosure;

[0033] Figure 11A shows a schematic diagram of the communication of different valve ports of the valve body of a nine-way valve in the fourth working mode according to an embodiment of the present disclosure;

[0034] Figure 1 1B shows a schematic diagram of the flow channel of the valve core of a nine-way valve in the fourth working mode according to an embodiment of the present disclosure;

[0035] Figure 12A shows a schematic diagram of the communication of different valve ports of the valve body of a nine-way valve in the fifth working mode according to an embodiment of the present disclosure;

[0036] Figure 12B shows a schematic diagram of the flow channel of the valve core of a nine-way valve in the fifth working mode according to an embodiment of the present disclosure;

[0037] Figure 13A shows a schematic diagram of the communication of different valve ports of the valve body of a nine-way valve in the sixth working mode according to an embodiment of the present disclosure;

[0038] Figure 13B shows a schematic diagram of the flow channel of the valve core of a nine-way valve in the sixth working mode according to an embodiment of the present disclosure. Detailed implementation manners

[0039] The following uses specific specific embodiments to illustrate the implementation manners of the present disclosure. Those skilled in the art can easily understand other advantages and effects of the present disclosure from the content disclosed in this specification.

[0040] It should be noted that the structures, ratios, sizes, etc. shown in the attached drawings of this specification are only used to cooperate with the content disclosed in the specification for the understanding and reading of those skilled in the art, and are not used to limit the limiting conditions under which the present disclosure can be implemented. Therefore, they do not have a technical essence. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present disclosure can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present disclosure. At the same time, the terms such as "upper" and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the scope under which the present disclosure can be implemented. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope that the present disclosure can be implemented.

[0041] To understand the present disclosure more clearly, the following specifically describes the embodiments of the present disclosure with reference to the drawings.

[0042] The present disclosure provides a nine-way valve 1. Please refer to Figures 1 to 3, the nine-way valve 1 includes a valve body 10, a valve core 20, and an actuator 30. The valve body 10 has nine valve ports. The valve core 20 is located inside the valve core 10 and can be driven by the actuator 30, so that the valve core 20 can rotate relative to the valve core 10 between multiple angular positions to achieve the switching between different working modes of the nine-way valve 1.

[0043] Specifically, in one embodiment, the valve body 10 can be generally cylindrical, having a top wall T, a bottom wall L, and a side wall S located between the top wall T and the bottom wall L. Multiple valve ports can all be located on the side wall S. Preferably, the multiple valve ports can be located in the same plane of the side wall S, as Figure 2 shown. Such a setting can directly connect and communicate the multiple valve ports with the flow channels on the flow channel plate (not shown), simplify the pipeline layout, and optimize the system structure.

[0044] In this embodiment, the nine valve ports of the valve body 10 are respectively a first valve port V1, a second valve port V2, a third valve port V3, a fourth valve port V4, a fifth valve port V5, a sixth valve port V6, a seventh valve port V7, an eighth valve port V8, and a ninth valve port V9, arranged in three vertical rows (as Figure 2 and Figure 6 shown, and the positions of other valve ports are blocked), and at least two of the valve ports can be connected through the flow channel of the valve core 20 to form a fluid passage. The valve body 10 is provided with an opening on the bottom wall L for placing the valve core 20. Of course, the present disclosure does not limit the position of the opening. For example, the opening can also be provided on the top wall T of the valve body 10, as long as the valve core 20 can be placed inside the valve body 10.

[0045] Please refer to Figure 3 and Figure 7 , the valve core 20 can be generally cylindrical, and along its circumferential direction (i.e., the direction of the circumference), it can include multiple regions. The multiple regions respectively correspond to multiple angular positions of the valve core 20, and the multiple angular positions respectively correspond to multiple working modes of the nine-way valve 1.

[0046] In this embodiment, the valve core 20 includes six regions, corresponding to six angular positions respectively. Specifically, the first angular position of the valve core 20 is as Figure 8B shown, which corresponds to the first region of the valve core 20, and the flow channel in the first region can be connected to multiple valve ports of the valve body 10 (the present disclosure is described by connecting four pairs of valve ports, but is not limited thereto) to form multiple (for example, four) fluid passages, as Figure 8A shown. The second angular position of the valve core 20 is as Figure 9B shown, which corresponds to the second region of the valve core 20, and the flow channel in the second region can be connected to multiple valve ports of the valve body 10 to form multiple fluid passages, as Figure 9A shown. The third angular position of the valve core 20 is as Figure 10BAs shown, it corresponds to the third region of the valve core 20, and the flow channels in this third region can communicate with multiple valve ports of the valve body 10 to form multiple fluid passages, such as Figure 10A shown. The fourth angular position of the valve core 20 is as shown in Figure 11B shown, which corresponds to the fourth region of the valve core 20, and the flow channels in this fourth region can communicate with multiple valve ports of the valve body 10 to form multiple fluid passages, such as Figure 11A shown. The fifth angular position of the valve core 20 is as shown in Figure 12B shown, which corresponds to the fifth region of the valve core 20, and the flow channels in this fifth region can communicate with multiple valve ports of the valve body 10 to form multiple fluid passages, such as Figure 12A shown. The sixth angular position of the valve core 20 is as shown in Figure 13B shown, which corresponds to the sixth region of the valve core 20, and the flow channels in this sixth region can also communicate with multiple valve ports of the valve body 10 to form multiple fluid passages, such as Figure 13A shown.

[0047] Please refer back to Figure 7 , in an embodiment, each of the first to sixth regions of the valve core 20 includes sub-regions Amn arranged in a substantially m×n matrix, where m is counted along the axial direction (i.e., the direction of the central axis) and m≥2, and n is counted along the circumferential direction and n≥2. Specifically, in this embodiment, m is equal to 4 and n is equal to 3, that is, each region includes sub-regions arranged in a substantially 4×3 matrix, such as Figure 7 shown. The m value of the topmost layer is 1 and increases axially to 4 in sequence; and the n value of the leftmost column in this region is 1 and increases circumferentially to 3 in sequence. The sub-region Amn represents the sub-region located in the m-th layer and the n-th column of the matrix. For example, A11 represents the sub-region located in the first layer (i.e., m = 1) and the first column (i.e., n = 1) of the matrix, and so on.

[0048] Please refer to Figure 7 , Figures 8A to 13B , in each region of the valve core 20, at least two sub-regions are connected (for example, there is no partition wall between the sub-regions) as flow channels (or it can also be said that different sub-regions are connected via flow channels), so that the valve ports corresponding to these two sub-regions are connected to form a fluid passage. Specifically, please refer to Figure 6 and Figure 7 simultaneously. The first valve port V1, the second valve port V2, the third valve port V3, the fourth valve port V4, the fifth valve port V5, the sixth valve port V6, the seventh valve port V7, the eighth valve port V8, and the ninth valve port V9 of the valve body 10 respectively correspond to the sub-regions A12, A13, A22, A23, A32, A33, A42, A43, and A31 in each region of the valve core 20. Thus, the flow channels connected by the above different sub-regions can achieve the connection of the valve ports corresponding to them, and further achieve the fluid passage.

[0049] Please also refer to Figure 3 and Figure 7 , a ring-shaped boss 202 is provided at the center of the bottom wall of the valve core 20. Correspondingly, an installation protrusion 104 is provided on the bottom end cover 101 at the opening of the bottom wall L of the plugging valve body 10. The installation protrusion 104 is located within the ring-shaped boss 202 to support one end of the valve core 20 and facilitate the smooth rotation of the valve core 20. Of course, the present disclosure is not limited to the above structure. For example, the valve core 20 may also be provided with an installation protrusion 104 at the center of its bottom wall, and correspondingly, a ring-shaped boss 202 cooperating with the installation protrusion 104 is provided on the bottom end cover 101. Or the ring-shaped boss 202 and the installation protrusion 104 may be omitted as long as the valve core 20 can be positioned and installed inside the valve body 10.

[0050] Please continue to refer to 3 and Figure 7 , a spline 201 is provided at the center of the top wall of the valve core 20 for spline connection with the actuator 30 to drive the valve core 20 to rotate between different angular positions through the actuator 30. A first limiting portion 203 may also be provided on the top wall of the valve core 20. Correspondingly, a second limiting portion 105 (as shown in Figure 4 ) may be provided inside the top wall T of the valve body 10. The maximum rotation angle of the valve core 20 inside the valve body 10 can be limited by the abutting action between the side walls of the first limiting portion 203 and the second limiting portion 105 to prevent the valve core 20 from rotating excessively and causing the nine-way valve 1 to fail to achieve its required working mode. In this embodiment, both the first limiting portion 203 and the second limiting portion 105 are limiting protrusions, and the maximum rotation angle of the valve core 20 inside the valve body 10 can be limited by the abutting of the side walls of the two limiting protrusions. Of course, the present disclosure is not limited to this. For example, one of the first limiting portion 203 and the second limiting portion 105 may also be a limiting groove (such as an arc), and correspondingly, the other is a limiting protrusion. The limiting protrusion is located within the limiting groove, and thus the maximum rotation angle of the valve core 20 inside the valve body 10 can be limited by the limiting protrusion abutting against the end side wall of the limiting groove.

[0051] Please continue to refer to Figure 3, the nine-way valve 1 may further include the aforementioned bottom end cover 101, sealing ring 60, and locking element 70. The bottom end cover 101 may be fixedly connected to the opening of the bottom wall L of the valve body 10 by, for example, welding, to seal the opening of the valve body 10 and fixedly install the valve core 20 inside the valve body 10. An opening is also provided on the top wall T of the valve body 10, and the spline 201 of the valve core 20 passes through the opening of the top wall T and is spline-connected to the actuator 30. The sealing ring 60 is sleeved on the bottom of the spline 201 (which is cylindrical here) and clamped between the opening of the top wall T of the valve body 10 and the bottom of the spline 201 to prevent the fluid inside the valve body 10 from leaking out. The actuator 30 is fixedly connected to the mounting post 106 of the valve body 10 through a locking element 70 (such as a screw, etc.). In one embodiment, the actuator 30 may include a stepper motor to facilitate controlling the rotation angle of the valve core 20.

[0052] Please continue to refer to Figure 3 , Figure 5A and Figure 5B , the nine-way valve 1 may further include an anti-inner-leakage gasket 40, which is disposed between the valve core 20 and the valve body 10 to achieve a sealed connection between the nine valve ports of the valve body 10 and the corresponding flow channels of the valve core 20, effectively avoiding the problem of inner leakage caused by the fluid flowing between the valve core 20 and the valve body 10. Specifically, the anti-inner-leakage gasket 40 may be generally in a partial annular column shape, and it includes nine holes corresponding to the first to ninth valve ports V1 - V9 (as shown in Figure 5A ), and of course, it may include more holes (for example, it may include 12 holes arranged in four rows and three columns approximately), as long as the flow channels of the valve core 20 can be connected to the nine valve ports of the valve body 10. In a preferred embodiment, a PTFE coating 402 may be coated on the anti-inner-leakage gasket 40. Such a setting can reduce the frictional resistance while ensuring its sealing performance, and further improve the wear resistance of the anti-inner-leakage gasket 40.

[0053] Please refer to Figure 4 and Figure 5B , an annular protrusion 103 may be provided inside the side wall S of the valve body 10, which is complementary in shape to the anti-inner-leakage gasket 40 (that is, the annular protrusion 103 and the anti-inner-leakage gasket 40 can form an annular column), so as to facilitate the positioning and installation of the anti-inner-leakage gasket 40 and effectively avoid the circumferential misalignment of the anti-inner-leakage gasket 40. However, the present disclosure is not limited to the above structure. For example, a positioning groove 401 may also be provided on the anti-inner-leakage gasket 40, and correspondingly, a positioning protrusion (not shown) cooperating with the positioning groove 401 is provided inside the valve body 10, as long as it can facilitate the positioning and installation of the anti-inner-leakage gasket 40. Of course, the nine-way valve 1 of the present disclosure may also not be provided with the anti-inner-leakage gasket 40. For example, the sealing between the valve body 10 and the valve core 20 can be achieved only through a relatively high fitting accuracy between them.

[0054] Please refer back to Figure 3 , the nine-way valve 1 may further include an anti-external leakage gasket 50, which is disposed on the side wall S outside the valve body 10. Specifically, as Figure 2 shown, the valve body 10 is provided with mounting grooves 107 on the side wall (S) corresponding to the nine valve ports, and the anti-external leakage gasket 50 is partially disposed in the mounting grooves 107 to achieve a sealed connection between the nine valve ports of the valve body 10 and the external pipeline (such as a flow channel plate).

[0055] Please refer to Figure 3 , Figure 4 and Figure 6 , on the side wall S of the valve body 10, especially on the plane where the nine valve ports are provided, a plurality of mounting holes 102 may be further provided for fixedly mounting the nine-way valve 1. Since the valve body 10 is usually made of plastic material and has relatively small stiffness and strength, when the fastening element (such as a screw, etc.) is directly locked in the mounting hole 102, it is easy to damage the mounting hole 102, and it cannot provide a large locking force for the fastening element. To avoid the above problems, the nine-way valve 1 of the present disclosure may further include a metal sleeve 80 with relatively large stiffness and strength (as Figure 3 shown), which is in interference fit with each mounting hole 102 of the valve body 10. Such a setting can provide a large locking force for the fastening element (such as a screw, etc.) and can prevent torque loss caused by damage to the mounting hole 102.

[0056] The six working modes of the nine-way valve 1 will be specifically described below in conjunction with Figures 8A to 13B .

[0057] Figure 8A shows a schematic diagram of the different valve ports of the valve body 10 being connected when the nine-way valve 1 is in the first working mode; Figure 8B shows a schematic diagram of the flow channel of the valve core 20 when the nine-way valve 1 is in the first working mode, and at this time the valve core 20 is in the first angular position. Please refer to Figure 8A and Figure 8B simultaneously. When the valve core 20 is in the first angular position: the sub-regions A12 and A13 in the first region of the valve core 20 are connected (such as the arrows in the first layer m = 1 in Figure 8B ), and the second valve port V1 is connected to the sub-region A12, and the second valve port V2 is connected to the sub-region A13, so that the first valve port V1 of the valve body 10 is connected to the second valve port V2 (as Figure 8A shown), forming a fluid circuit; the sub-regions A22 and A23 in the first region are connected (such as the arrows in the second layer m = 2 in Figure 8B ), and the third valve port V3 is connected to the sub-region A22, and the fourth valve port V4 is connected to the sub-region A23, so that the third valve port V3 of the valve body 10 is connected to the fourth valve port V4 (as Figure 8A shown), forming another fluid circuit; the sub-regions A32 and A42 in the first region are connected (such as the arrows in Figure 8Bthe arrow located in the second column n = 2), and the fifth valve port V5 communicates with the sub-region A32, and the seventh valve port V7 communicates with the sub-region A42, so that the fifth valve port V5 of the valve body 10 communicates with the seventh valve port V7 (as Figure 8A shown), forming a re-fluid circuit; at the same time, the sub-regions A33 and A43 in the first region communicate with each other (as Figure 8B the arrow located in the third column n = 3), and the sixth valve port V6 communicates with the sub-region A33, and the eighth valve port V8 communicates with the sub-region A43, so that the sixth valve port V6 of the valve body 10 communicates with the eighth valve port V8 (as Figure 8A shown), forming another fluid circuit; moreover, the above four fluid circuits are independent of each other, do not cross each other, and do not communicate with the ninth valve port V9 (that is, the ninth valve port V9 of the valve body 10 does not communicate with other valve ports). Thus, when the valve core 20 is in the first angular position, the nine-way valve 1 is in the first working mode, and four independent fluid circuits are formed, that is, the first valve port V1 of the valve body 10 communicates with the second valve port V2, the third valve port V3 communicates with the fourth valve port V4, the fifth valve port V5 communicates with the seventh valve port V7, and the sixth valve port V6 communicates with the eighth valve port V8.

[0058] Figure 9A FIG. shows a schematic diagram of the communication of different valve ports of the valve body 10 when the nine-way valve 1 is in the second working mode; Figure 9B FIG. shows a schematic diagram of the flow channel of the valve core 20 when the nine-way valve 1 is in the second working mode, and at this time the valve core 20 is in the second angular position. Please refer to Figure 9A and Figure 9B simultaneously. When the valve core 20 rotates counterclockwise from the first angular position to the second angular position (for example, a position rotated counterclockwise about 40° from the first angular position): the sub-regions A12 and A13 in the second region of the valve core 20 communicate with each other (as Figure 9B the arrow located in the first layer m = 1), and the first valve port V1 communicates with the sub-region A12, and the second valve port V2 communicates with the sub-region A13, so that the first valve port V1 of the valve body 10 communicates with the second valve port V2 (as Figure 9A shown), forming a fluid circuit; the sub-regions A22 and A23 in the second region communicate with each other (as Figure 9B the arrow located in the second layer m = 2), and the third valve port V3 communicates with the sub-region A22, and the fourth valve port V4 communicates with the sub-region A23, so that the third valve port V3 of the valve body 10 communicates with the fourth valve port V4 (as Figure 9A shown), forming another fluid circuit; the sub-regions A32 and A31 in the second region communicate with each other (as Figure 9B the arrow located in the third layer m = 3), and the fifth valve port V5 communicates with the sub-region A32, and the ninth valve port V9 communicates with the sub-region A31, so that the fifth valve port V5 of the valve body 10 communicates with the ninth valve port V9 (as Figure 9AAs shown in the figure, a further fluid circuit is formed; meanwhile, sub-regions A33 and A43 in the second region are connected (such as Figure 9B the arrow located in the third column n = 3 in the figure), and the sixth valve port V6 communicates with sub-region A33, and the eighth valve port V8 communicates with sub-region A43, so that the sixth valve port V6 of the valve body 10 is connected to the eighth valve port V8 (such as Figure 9A shown in the figure), forming another fluid circuit; moreover, the above four fluid circuits are independent of each other, do not cross each other, and are not connected to the seventh valve port V7 (that is, the seventh valve port V7 of the valve body 10 is not connected to other valve ports). Thus, when the valve core 20 is in the second angular position, the nine-way valve 1 is in the second working mode, and four independent fluid circuits are formed, that is, the first valve port V1 of the valve body 10 is connected to the second valve port V2, the third valve port V3 is connected to the fourth valve port V4, the fifth valve port V5 is connected to the ninth valve port V9, and the sixth valve port V6 is connected to the eighth valve port V8.

[0059] It should be noted that since the second angular position can be reached by rotating counterclockwise about 40° from the first angular position, and the included angle between the two angular positions is small, the first region and the second region of the valve core 20 partially overlap, that is, they have the same sub-regions. Specifically, as Figure 8B and Figure 9B shown in the figure, the sub-regions in the first column n = 1 and the second column n = 2 in the first region of the valve core 20 (please refer to Figure 8B ) can be used as the sub-regions in the second column n = 2 and the third column n = 3 in the second region of the valve core 20 (please refer to Figure 9B ).

[0060] Figure 10A Fig. shows a schematic diagram of the connection of different valve ports of the valve body 10 when the nine-way valve 1 is in the third working mode; Figure 10B Fig. shows a schematic diagram of the flow channel of the valve core 20 when the nine-way valve 1 is in the third working mode, and at this time the valve core 20 is in the third angular position. Please refer to Figure 10A and Figure 10B simultaneously. When the valve core 20 rotates counterclockwise from the second angular position to the third angular position (for example, a position about 35° counterclockwise from the second angular position): the sub-regions A12 and A13 in the third region of the valve core 20 are connected (such as Figure 10B the arrow located in the first layer m = 1 in the figure), and the first valve port V1 communicates with sub-region A12, and the second valve port V2 communicates with sub-region A13, so that the first valve port V1 of the valve body 10 is connected to the second valve port V2 (such as Figure 10A shown in the figure), forming a fluid circuit; the sub-regions A22 and A23 in this third region are connected (such as Figure 10B the arrow located in the second layer m = 2 in the figure), and the third valve port V3 communicates with sub-region A22, and the fourth valve port V4 communicates with sub-region A23, so that the third valve port V3 of the valve body 10 is connected to the fourth valve port V4 (such as Figure 10Aas shown in the figure), to form another fluid circuit; the sub-regions A32 and A33 in the third region are connected (such as the arrow located in the third layer m = 3 in Figure 10B ), and the fifth valve port V5 communicates with the sub-region A32, and the sixth valve port V6 communicates with the sub-region A33, so that the fifth valve port V5 of the valve body 10 communicates with the sixth valve port V6 (such as Figure 10A shown), to form another fluid circuit; at the same time, the sub-regions A42 and A43 in the third region are connected (such as the arrow located in the fourth layer m = 4 in Figure 10B ), and the seventh valve port V7 communicates with the sub-region A42, and the eighth valve port V8 communicates with the sub-region A43, so that the seventh valve port V7 of the valve body 10 communicates with the eighth valve port V8 (such as Figure 10A shown), to form yet another fluid circuit; moreover, the above four fluid circuits are independent of each other, do not cross each other, and do not communicate with the ninth valve port V9 (that is, the ninth valve port V9 of the valve body 10 does not communicate with other valve ports). Thus, when the valve core 20 is in the third angular position, the nine-way valve 1 is in the third working mode, and four independent fluid circuits are formed, that is, the first valve port V1 of the valve body 10 communicates with the second valve port V2, the third valve port V3 communicates with the fourth valve port V4, the fifth valve port V5 communicates with the sixth valve port V6, and the seventh valve port V7 communicates with the eighth valve port V8.

[0061] It should be noted that since the third angular position can be reached by rotating counterclockwise about 35° from the second angular position, and the included angle between the two angular positions is small, the second region and the third region of the valve core 20 partially overlap, that is, they have the same sub-regions. Specifically, as Figure 9B and Figure 10B shown, the sub-regions in the first column n = 1 and the second column n = 2 in the second region of the valve core 20 (please refer to Figure 9B ) can be used as the sub-regions in the second column n = 2 and the third column n = 3 in the third region of the valve core 20 (please refer to Figure 10B ).

[0062] Figure 11A shows a schematic diagram of the connection of different valve ports of the valve body 10 when the nine-way valve 1 is in the fourth working mode; Figure 11B shows a schematic diagram of the flow channel of the valve core 20 when the nine-way valve 1 is in the fourth working mode, and at this time the valve core 20 is in the fourth angular position. Please refer to Figure 11A and Figure 11B simultaneously. When the valve core 20 rotates counterclockwise from the third angular position to the fourth angular position (for example, the position obtained by rotating counterclockwise about 70° from the third angular position): the sub-regions A12 and A13 in the fourth region of the valve core 20 are connected (such as the arrow located in the first layer m = 1 in Figure 11B ), and the first valve port V1 communicates with the sub-region A12, and the second valve port V2 communicates with the sub-region A13, so that the first valve port V1 of the valve body 10 communicates with the second valve port V2 (such as Figure 11Aas shown), forming a fluid circuit; sub-regions A22 and A23 in the fourth region are in communication (such as the arrow located in the second layer m = 2 in Figure 11B ), and the third valve port V3 communicates with sub-region A22, and the fourth valve port V4 communicates with sub-region A23, so that the third valve port V3 of the valve body 10 communicates with the fourth valve port V4 (such as Figure 11A shown), forming another fluid circuit; sub-regions A32 and A33 in the fourth region are in communication (such as the arrow located in the third layer m = 3 in Figure 11B ), and the fifth valve port V5 communicates with sub-region A32, and the sixth valve port V6 communicates with sub-region A33, so that the fifth valve port V5 of the valve body 10 communicates with the sixth valve port V6 (such as Figure 11A shown), forming yet another fluid circuit; at the same time, sub-regions A43 and A31 in the fourth region are in communication (for example, sub-region A43 can communicate with A31 via A42 and A41, such as the arrow connecting the first column n = 1 and the third column n = 3 in Figure 11B ), and the eighth valve port V8 communicates with sub-region A43, and the ninth valve port V9 communicates with sub-region A31, so that the eighth valve port V8 of the valve body 10 communicates with the ninth valve port V9 (such as Figure 11A shown), forming another fluid circuit. It should be noted that in this embodiment, the sub-region A42 does not communicate with the seventh valve port V7. For example, the sub-region A42 can be blocked by a peripheral wall S1 (such as Figure 11B shown) to separate the sub-region A42 and the seventh valve port V7; moreover, the above four fluid circuits are independent of each other, do not cross, and do not communicate with the seventh valve port V7 (that is, the seventh valve port V7 of the valve body 10 does not communicate with other valve ports). Thus, when the valve core 20 is in the fourth angular position, the nine-way valve 1 is in the fourth working mode, and four independent fluid circuits are formed, that is, the first valve port V1 of the valve body 10 communicates with the second valve port V2, the third valve port V3 communicates with the fourth valve port V4, the fifth valve port V5 communicates with the sixth valve port V6, and the eighth valve port V8 communicates with the ninth valve port V9.

[0063] It should be noted that since the fourth angular position can be reached by rotating about 70° counterclockwise from the third angular position, and the included angle between the two angular positions is small, the third region and the fourth region of the valve core 20 partially overlap, that is, they have the same sub-regions. Specifically, as Figure 10B and Figure 11B shown, the sub-region of the first column n = 1 in the third region of the valve core 20 (please refer to Figure 10B ) can be used as the sub-region of the third column n = 3 in the fourth region of the valve core 20 (please refer to Figure 11B ).

[0064] Figure 12AShows a schematic diagram of the different valve ports of the valve body 10 when the nine-way valve 1 is in the fifth working mode; Figure 12B Shows a schematic diagram of the flow channel of the valve core 20 when the nine-way valve 1 is in the fifth working mode. At this time, the valve core 20 is in the fifth angular position. Please also refer to Figure 12A and Figure 12B , when the valve core 20 rotates counterclockwise from the fourth angular position to the fifth angular position (for example, a position rotated counterclockwise about 75° from the fourth angular position): the sub-regions A12 and A22 in the fifth region of the valve core 20 are connected (such as the arrow in the second column n = 2 in Figure 12B ), and the first valve port V1 is connected to the sub-region A12, and the third valve port V3 is connected to the sub-region A22, so that the first valve port V1 of the valve body 10 is connected to the third valve port V3 (as shown in Figure 12A ), forming a fluid circuit; the sub-regions A13 and A23 in the fifth region are connected (such as the arrow in the third column n = 3 in Figure 12B and connecting the first layer m = 1 and the second layer m = 2), and the second valve port V2 is connected to the sub-region A13, and the fourth valve port V4 is connected to the sub-region A23, so that the second valve port V2 of the valve body 10 is connected to the fourth valve port V4 (as shown in Figure 12A ), forming another fluid circuit; the sub-regions A32 and A31 in the fifth region are connected (such as the arrow in the third layer m = 3 in Figure 12B ), and the fifth valve port V5 is connected to the sub-region A32, and the ninth valve port V9 is connected to the sub-region A31, so that the fifth valve port V5 of the valve body 10 is connected to the ninth valve port V9 (as shown in Figure 12A ), forming yet another fluid circuit; at the same time, the sub-regions A33 and A43 in the fifth region are connected (such as the arrow in the third column n = 3 in Figure 12B and connecting the third layer m = 3 and the fourth layer m = 4), and the sixth valve port V6 is connected to the sub-region A33, and the eighth valve port V8 is connected to the sub-region A43, so that the sixth valve port V6 of the valve body 10 is connected to the eighth valve port V8 (as shown in Figure 12A ), forming another fluid circuit; and the above four fluid circuits are independent of each other, do not cross, and are not connected to the seventh valve port V7 (that is, the seventh valve port V7 of the valve body 10 is not connected to other valve ports). Thus, it can be seen that when the valve core 20 is in the fifth angular position, the nine-way valve 1 is in the fifth working mode, and four independent fluid circuits are formed, that is, the first valve port V1 of the valve body 10 is connected to the third valve port V3, the second valve port V2 is connected to the fourth valve port V4, the fifth valve port V5 is connected to the ninth valve port V9, and the sixth valve port V6 is connected to the eighth valve port V8.

[0065] It should be noted that since the fifth angular position can be reached by rotating counterclockwise about 75° from the fourth angular position, the included angle between the two angular positions is small, so the fourth region and the fifth region of the valve core 20 partially overlap, that is, they have the same sub-regions. Specifically, asFigure 11B and Figure 12B As shown, the sub-region of the first column n = 1 in the fourth region of the valve core 20 (please refer to Figure 11B ) can be used as the sub-region of the third column n = 3 in the fifth region of the valve core 20 (please refer to Figure 12B ).

[0066] Figure 13A Fig. shows a schematic diagram of the connection of different valve ports of the valve body 10 when the nine-way valve 1 is in the sixth working mode; Figure 13B Fig. shows a schematic diagram of the flow channel of the valve core 20 when the nine-way valve 1 is in the sixth working mode. At this time, the valve core 20 is in the sixth angular position. Please also refer to Figure 13A and Figure 13B , when the valve core 20 rotates counterclockwise from the fifth angular position to the sixth angular position (for example, a position rotated counterclockwise about 70° from the fifth angular position): the sub-regions A12 and A22 in the sixth region of the valve core 20 are connected (such as the arrow in Figure 13B located in the second column n = 2 and connecting the first layer m = 1 and the second layer m = 2), and the first valve port V1 is connected to the sub-region A12, and the third valve port V3 is connected to the sub-region A22, so that the first valve port V1 and the third valve port V3 of the valve body 10 are connected (as shown in Figure 13A ), forming a fluid circuit; the sub-regions A13 and A23 in this sixth region are connected (such as the arrow in Figure 13B located in the third column n = 3 and connecting the first layer m = 1 and the second layer m = 2), and the second valve port V2 is connected to the sub-region A13, and the fourth valve port V4 is connected to the sub-region A23, so that the second valve port V2 and the fourth valve port V4 of the valve body 10 are connected (as shown in Figure 13A ), forming another fluid circuit; the sub-regions A32 and A42 in this sixth region are connected (such as the arrow in Figure 13B located in the second column n = 2 and connecting the third layer m = 3 and the fourth layer m = 4), and the fifth valve port V5 is connected to the sub-region A32, and the seventh valve port V7 is connected to the sub-region A42, so that the fifth valve port V5 and the seventh valve port V7 of the valve body 10 are connected (as shown in Figure 13A ), forming yet another fluid circuit; at the same time, the sub-regions A33 and A43 in this sixth region are connected (such as the arrow in Figure 13B located in the third column n = 3 and connecting the third layer m = 3 and the fourth layer m = 4), and the sixth valve port V6 is connected to the sub-region A33, and the eighth valve port V8 is connected to the sub-region A43, so that the sixth valve port V6 and the eighth valve port V8 of the valve body 10 are connected (as shown in Figure 13AAs shown, a further fluid circuit is formed; moreover, the above four fluid circuits are independent of each other, do not cross, and are not connected to the ninth valve port V9 (that is, the ninth valve port V9 of the valve body 10 is not connected to other valve ports). Thus, when the valve core 20 is in the sixth angular position, the nine-way valve 1 is in the sixth working mode, and four independent fluid circuits are formed, that is, the first valve port V1 of the valve body 10 is connected to the third valve port V3, the second valve port V2 is connected to the fourth valve port V4, the fifth valve port V5 is connected to the seventh valve port V7, and the sixth valve port V6 is connected to the eighth valve port V8.

[0067] It should be noted that since the sixth angular position can be reached by rotating counterclockwise about 70° from the fifth angular position, and the included angle between the two angular positions is small, the fifth region and the sixth region of the valve core 20 partially overlap, that is, they have the same sub-regions. Specifically, as Figure 12B and Figure 13B shown, the sub-region in the first column n = 1 of the fifth region of the valve core 20 (please refer to Figure 12B ) can be used as the sub-region in the third column n = 3 of the sixth region of the valve core 20 (please refer to Figure 13B ).

[0068] It can be seen that the nine-way valve 1 in the present disclosure can be switched between different working modes by changing the angular position of the valve core 20 (for example, rotating the valve core 20), which is easy to control, and can replace the setting of multiple three-way valves and four-way valves in the prior art, with simple assembly, can simplify the pipeline structure, improve the integration degree, and reduce the occupied space.

[0069] Although the above embodiments of the present disclosure are described with the valve body 10 having nine valve ports and the valve core 20 including six angular positions, the present disclosure is not limited thereto, as long as the valve core 20 can connect at least two valve ports in different working positions to achieve switching between different working modes.

[0070] The above embodiments of the present disclosure are all described with each region being roughly a 4×3 matrix, but the present disclosure is not limited thereto. For example, it can also be roughly a 3×4 matrix, a 2×2 matrix or other matrices, as long as m≥2 and n≥2. Or the sub-regions in each region may not be arranged in a matrix, as long as the different valve ports on the valve body 10 can be connected via the flow channels on the valve core 20.

[0071] In addition, the included angles between the first and second angular positions, the second and third angular positions, the third and fourth angular positions, the fourth and fifth angular positions, and the fifth and sixth angular positions in the above embodiments of the present disclosure are described as 40°, 35°, 70°, 75°, and 70° respectively. However, the present disclosure is not limited thereto. For example, the included angle between the above two angular positions can also be other suitable angles, as long as different fluid circuits can be formed by the nine-way valve 1 at different angular positions, that is, the nine-way valve 1 has different working modes.

[0072] In addition, the present disclosure Figures 8A to 13B The arrows in it are not used to limit the flow direction of the fluid, but are only for convenience of explanation. For example, the fluid can also flow in the reverse direction of the arrow.

[0073] In summary, the nine-way valve provided by the present disclosure includes a valve body and a valve core located inside the valve body and capable of rotating between six angular positions relative to the valve body. By providing nine valve ports on the valve body and six regions in the circumferential direction of the valve core, each region includes a plurality of sub-regions, and at least two sub-regions in the valve core can be connected to form a flow channel, so that the valve port corresponding to the flow channel is connected. In this way, the switching between six working modes of the nine-way valve can be realized. This design can not only replace the complex structure of multiple three-way valves and four-way valves in the prior art, but also has simple assembly, low cost, easy control, can simplify the pipeline structure, and improve the product integration.

[0074] The above has described the exemplary embodiments of the nine-way valve provided by the present disclosure with reference to the preferred embodiments. However, those skilled in the art can understand that, without departing from the concept of the present disclosure, various modifications and changes can be made to the above specific embodiments, and various combinations of the technical features and structures proposed by the present disclosure can be made without exceeding the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. A nine-way valve (1), characterized in that, the nine-way valve (1) comprises: a valve body (10) including first to ninth valve ports (V1, V2, V3, V4, V5, V6, V7, V8, V9); a valve core (20) located within the valve body (10) and capable of rotating relative to the valve body (10) between a plurality of angular positions, the valve core (20) including a plurality of regions corresponding to the plurality of angular positions along its circumferential direction, each of the regions including sub-regions A12, A13, A22, A23, A32, A33, A42, A43, A31 corresponding to the first to ninth valve ports, wherein, in each of the regions, the valve core (20) includes a flow channel, and at least two sub-regions of each of the regions are communicated via the flow channel, so that the valve ports corresponding to the two sub-regions are communicated.

2. The nine-way valve (1) according to claim 1, characterized in that, the plurality of angular positions include first to sixth angular positions, and the plurality of regions include first to sixth regions.

3. The nine-way valve (1) according to claim 1, characterized in that, the valve body has a top wall (T), a bottom wall (L) and a side wall (S) located between the top wall (T) and the bottom wall (L), and the first to ninth valve ports (V1, V2, V3, V4, V5, V6, V7, V8, V9) are located on the side wall (S) and in the same plane.

4. The nine-way valve (1) according to claim 2, characterized in that, at the first angular position: the sub-regions A12, A13 in the first region of the valve core (20) are communicated to communicate the first valve port (V1) with the second valve port (V2); the sub-regions A22, A23 in the first region of the valve core (20) are communicated to communicate the third valve port (V3) with the fourth valve port (V4); the sub-regions A32, A42 in the first region of the valve core (20) are communicated to communicate the fifth valve port (V5) with the seventh valve port (V7); the sub-regions A33, A43 in the first region of the valve core (20) are communicated to communicate the sixth valve port (V6) with the eighth valve port (V8); and the ninth valve port (V9) is not communicated with other valve ports.

5. The nine-way valve (1) according to claim 2, characterized in that, at the second angular position: the sub-regions A12, A13 in the second region of the valve core (20) are communicated to communicate the first valve port (V1) with the second valve port (V2); the sub-regions A22, A23 in the second region of the valve core (20) are communicated to communicate the third valve port (V3) with the fourth valve port (V4); the sub-regions A32, A31 in the second region of the valve core (20) are communicated to communicate the fifth valve port (V5) with the ninth valve port (V9); The A33 and A43 sub-regions in the second region of the spool (20) communicate with each other so that the sixth valve port (V6) communicates with the eighth valve port (V8); and The seventh valve port (V7) does not communicate with other valve ports.

6. The nine-way valve (1) according to claim 2, characterized in that, At the third angular position: The A12 and A13 sub-regions in the third region of the spool (20) communicate with each other so that the first valve port (V1) communicates with the second valve port (V2); The A22 and A23 sub-regions in the third region of the spool (20) communicate with each other so that the third valve port (V3) communicates with the fourth valve port (V4); The A32 and A33 sub-regions in the third region of the spool (20) communicate with each other so that the fifth valve port (V5) communicates with the sixth valve port (V6); The A42 and A43 sub-regions in the third region of the spool (20) communicate with each other so that the seventh valve port (V7) communicates with the eighth valve port (V8); and The ninth valve port (V9) does not communicate with other valve ports.

7. The nine-way valve (1) according to claim 2, characterized in that, At the fourth angular position: The A12 and A13 sub-regions in the fourth region of the spool (20) communicate with each other so that the first valve port (V1) communicates with the second valve port (V2); The A22 and A23 sub-regions in the fourth region of the spool (20) communicate with each other so that the third valve port (V3) communicates with the fourth valve port (V4); The A32 and A33 sub-regions in the fourth region of the spool (20) communicate with each other so that the fifth valve port (V5) communicates with the sixth valve port (V6); The A31 and A43 sub-regions in the fourth region of the spool (20) communicate with each other so that the eighth valve port (V8) communicates with the ninth valve port (V9); and The seventh valve port (V7) does not communicate with other valve ports.

8. The nine-way valve (1) according to claim 7, characterized in that, The fourth region of the spool (20) further includes an A42 sub-region, The A42 sub-region in the fourth region is blocked by the peripheral wall (S1) and does not communicate with the seventh valve port (V7). The eighth valve port (V8) communicates with the ninth valve port (V9) via the A43, A42, A41, and A31 sub-regions.

9. The nine-way valve (1) according to claim 2, characterized in that, At the fifth angular position: The A12 and A22 sub-regions in the fifth region of the spool (20) communicate with each other so that the first valve port (V1) communicates with the third valve port (V3); The A13 and A23 sub-regions in the fifth region of the spool (20) communicate with each other so that the second valve port (V2) communicates with the fourth valve port (V4); The A32 and A31 sub-regions in the fifth region of the spool (20) communicate with each other so that the fifth valve port (V5) communicates with the ninth valve port (V9); The sub-regions A33 and A43 in the fifth region of the spool (20) are in communication so that the sixth valve port (V6) communicates with the eighth valve port (V8); and The seventh valve port (V7) does not communicate with other valve ports.

10. The nine-way valve (1) according to claim 2, characterized in that at the sixth angular position: The sub-regions A12 and A22 in the sixth region of the spool (20) are in communication so that the first valve port (V1) communicates with the third valve port (V3); The sub-regions A13 and A23 in the sixth region of the spool (20) are in communication so that the second valve port (V2) communicates with the fourth valve port (V4); The sub-regions A32 and A42 in the sixth region of the spool (20) are in communication so that the fifth valve port (V5) communicates with the seventh valve port (V7); The sub-regions A33 and A43 in the sixth region of the spool (20) are in communication so that the sixth valve port (V6) communicates with the eighth valve port (V8); and The ninth valve port (V9) does not communicate with other valve ports.

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