A multi-way valve

Abstract

This utility model relates to the field of automotive valve technology, and more particularly to a multi-way valve, including a valve cover, a valve core, a valve core sealing gasket, and a valve seat. The valve core sealing gasket is installed between the valve core and the valve seat, and a flow guiding space is formed between the outer side of the valve core and the mounting cavity of the valve cover. The valve seat has an even number of valve seat flow channels, and the valve core has a first valve core flow channel and a second valve core flow channel that are not interconnected. When the valve core is driven and rotates along the central axis of the valve cover, valve core sealing gasket, and valve seat, the first valve core flow channel and the second valve core flow channel are respectively connected to the inner flow port of any valve seat flow channel to form an upper flow guiding sub-channel and a lower flow guiding sub-channel. The two upper flow guiding sub-channels are connected to the flow guiding space to form an upper flow guiding channel; the two lower flow guiding sub-channels are interconnected to form a lower flow guiding channel. This utility model can solve the technical problem that existing multi-way valves generally adopt a valve core single-sided inlet and outlet flow channel structure, causing the valve core sealing gasket installed on one side of the valve core to be subjected to unbalanced fluid pressure and friction for a long time.

Description

Technical Field

[0001] This utility model relates to the field of automotive valve technology, and in particular to a multi-way valve. Background Technology

[0002] In the thermal management system of new energy vehicles, the multi-way valve is a core component for achieving coordinated control of three major loops: "motor and electronic control thermal management," "battery thermal management," and "cabin thermal management." Its performance directly affects the energy utilization efficiency of the entire vehicle and the reliability of the components. Currently, most mainstream multi-way valves on the market adopt a single-sided inlet and outlet flow channel structure, meaning that the cooling medium flows in from one side of the valve core, switches direction through a preset internal flow channel, and then flows out from the same side again. While this design can achieve basic flow channel switching, it has significant technical shortcomings.

[0003] Because the medium flows in and out of the valve core in one direction, the valve core gasket installed on one side of the valve core is subjected to uneven fluid pressure and friction for a long time. Taking the scenario of frequent start-stop and operating condition switching in new energy vehicles as an example, the valve core gasket is continuously subjected to lateral impact from the medium flow, resulting in accelerated surface wear, rapid decline in sealing performance, and in severe cases, even coolant leakage, threatening the safe operation of the system. At the same time, the high pressure on one side means that the valve core must overcome greater resistance when rotating or moving, and the drive motor or actuator must consume more energy. This not only increases the system's energy consumption but also places higher demands on the durability of the drive components, significantly increasing manufacturing and maintenance costs. Utility Model Content

[0004] The purpose of this invention is to propose a multi-way valve to solve the technical problem that existing multi-way valves generally adopt a single-sided inlet and outlet flow channel structure for the valve core, which causes the valve core sealing gasket installed on one side of the valve core to be subjected to unbalanced fluid pressure and friction for a long time.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A multi-way valve includes a valve cover, a valve core, a valve core sealing gasket, and a valve seat;

[0007] The valve cover has an installation cavity, through which the valve cover seals the valve core and valve core sealing gasket together onto the valve seat. The valve core sealing gasket is installed between the valve core and the valve seat. The valve core can be driven and rotated along the central axis of the valve cover, valve core sealing gasket and valve seat.

[0008] A flow guiding space is formed between the outside of the valve core and the mounting cavity;

[0009] The valve seat has an even number of valve seat flow channels, and the two ports of the valve seat flow channels are an inner flow port and an outer flow port, respectively.

[0010] The valve core sealing gasket has multiple flow holes, and each of the flow holes is connected to the inner flow port.

[0011] The valve core has a first valve core flow channel and a second valve core flow channel inside. The first valve core flow channel and the second valve core flow channel are not connected. The two ports of the first valve core flow channel are located on opposite sides of the valve core, and the two ports of the second valve core flow channel are located inside the valve core and on one side of the valve core, respectively.

[0012] When the valve core is driven and rotates along the central axis of the valve cover, valve core gasket and valve seat, the first valve core flow channel and the second valve core flow channel are respectively connected to the inner flow port of any of the valve seat flow channels to form an upper guide sub-channel and a lower guide sub-channel.

[0013] The two upper guide channels are connected to the guide space to form an upper guide channel;

[0014] The two lower guide channels are interconnected to form a lower guide channel.

[0015] Preferably, the two adjacent first valve core flow channels can be combined or separated.

[0016] Preferably, the two adjacent second valve core flow channels can be arranged together or separately.

[0017] Preferably, the number of the first valve core flow channels is three;

[0018] Two adjacent first valve core flow channels merge to form a valve core channel, while the other first valve core flow channel is set separately.

[0019] When the unmerged first valve core flow channel is connected to the valve seat flow channel, only one first valve core flow channel in the valve core channel is connected to the valve seat flow channel for flow.

[0020] When the unmerged first valve core flow channel is not connected to the valve seat flow channel, both first valve core flow channels in the valve core channel are connected to the valve seat flow channel.

[0021] Preferably, there are four second valve core flow channels, and the four second valve core flow channels are merged in pairs to form two valve core grooves;

[0022] The two valve core grooves are respectively connected to the four valve seat flow channels;

[0023] The two valve core grooves, the valve core channel, and the separately provided first valve core flow channel are arranged in a ring around the center of the valve core. The two valve core grooves are located on both sides of the valve core channel, so as to space the valve core channel and the separately provided first valve core flow channel.

[0024] Preferably, the valve cover includes an integrally formed cover body and an annular sidewall;

[0025] The inner cover surface of the cover body is provided with a limiting center and two limiting edges. The limiting center is located at the center of the inner cover surface of the cover body. One end of each of the two limiting edges is connected to the limiting center, and the other end of each of the two limiting edges is connected to the annular sidewall. The two limiting edges divide the inner cover surface of the cover body into a large cover area and a small cover area in an uneven manner.

[0026] The upper surface of the valve core has a protruding stop portion, which is located between the valve core channel and the separately provided first valve core flow channel. The stop portion can move along the large cover area under the rotation of the valve core, and the stop portion can abut against the two limiting edges.

[0027] Preferably, the valve also includes a valve nozzle, which is installed corresponding to the external flow port and is fixedly installed on the outside of the valve seat.

[0028] Preferably, it also includes a drive assembly, which includes a driver, a drive shaft, and a drive seal.

[0029] The valve cover has a valve cover mounting through hole in the center;

[0030] The valve core has a valve core mounting through hole at its center, and the upper surface of the valve core has an annular mounting edge protruding around the valve core mounting through hole. The drive sealing gasket is installed inside the annular mounting edge.

[0031] The valve seat has a positioning hole at its center;

[0032] The driver is installed above the valve cover. The drive end of the driver is fixedly installed with one end of the drive shaft. The other end of the drive shaft passes through the valve cover mounting through hole, the center of the drive sealing gasket and the valve core mounting through hole in sequence and is rotatably installed in the positioning hole. The shaft body of the drive shaft is fixedly installed with the valve core.

[0033] Preferably, the upper surface of the valve seat is provided with an annular mounting groove around the positioning hole, and the groove surface of the annular mounting groove protrudes to form multiple limiting blocks, and the multiple limiting blocks and multiple internal flow ports are arranged alternately.

[0034] The valve core sealing gasket is installed inside the annular mounting groove, and the valve core sealing gasket has multiple limiting holes, which are installed one-to-one with the limiting block.

[0035] Preferably, the valve core sealing gasket comprises a PTFE material layer and an EPDM material layer;

[0036] The drive gasket and the valve core gasket have the same structure.

[0037] One of the above technical solutions has the following beneficial effects:

[0038] 1. Balanced Force on Valve Core Sealing Gasket, Enhancing System Safety: Traditional multi-way valves suffer from uneven pressure and friction on the valve core sealing gasket due to unilateral medium inflow and outflow, leading to wear and leakage. In this technical solution, the two ports of the first valve core flow channel are oppositely distributed. When medium flows into the upper guide channel, it impacts the valve core sealing gasket and valve core from bottom to top, then flows again after being buffered by the guide space. The two ports of the second valve core flow channel are located inside the valve core and on one side, respectively, resulting in a shorter flow path inside the valve core in the lower guide channel. This allows the medium in the lower guide channel to be quickly pushed downwards after rising, changing the direction of the impact force. Combining the different impact directions of the upper and lower guide channels on the valve core sealing gasket, and the different positions of the first and second valve core flow channels within the valve core, not only is the unidirectional impact of the medium on the valve core sealing gasket reduced, but pressure concentration caused by mutual interference of the medium within the valve core is also avoided. This allows for a more balanced distribution of fluid pressure and friction on the valve core and valve core gasket, reducing wear caused by lateral impacts during frequent vehicle starts and stops and changes in operating conditions, thereby extending service life, reducing the risk of coolant leakage, ensuring the safe operation of the thermal management system, and improving the reliability of vehicle components.

[0039] 2. Reduced Energy Consumption and Costs, Enhanced Economic Efficiency: Traditional single-sided high pressure structures result in high resistance to valve core rotation, high drive energy consumption, and rapid wear of drive components. This solution optimizes the flow channel layout. The upper guide channel has a buffer space for flow, while the lower guide channel guides the medium to flow inside the valve core. This reduces concentrated stress on the valve core, decreasing resistance during rotation and eliminating the need for excessive energy to overcome resistance, thus reducing system energy consumption. Simultaneously, it reduces the load on the components driving the valve core, lowering durability requirements and reducing maintenance and replacement frequency, thereby lowering manufacturing and maintenance costs and improving the economic efficiency of the thermal management system for new energy vehicles.

[0040] 3. Optimized loop control and improved thermal management efficiency: Because the first and second valve core flow channels are not connected, and the upper and lower guide channels are independent, interference from the mixing of media in different loops is avoided. Furthermore, the design of the valve seat flow channel's external outlet, with half connected to the external medium and half connected to the three major management systems, combined with the clear flow paths of the upper and lower guide channels, allows for precise matching of the cooling or heating requirements of each management system. Rotation of the valve core enables more diverse path combinations, flexibly adjusting the distribution of the medium in the three management systems, achieving coordinated control, improving the overall vehicle energy utilization efficiency, and optimizing the performance of the thermal management system. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of a multi-way valve according to this utility model;

[0042] Figure 2 This is an exploded schematic diagram of a multi-way valve according to this utility model;

[0043] Figure 3 This is a top view schematic diagram of a multi-way valve according to the present invention;

[0044] Figure 4 yes Figure 3 A partial cross-sectional view at point AA in the middle;

[0045] Figure 5 yes Figure 3 A partial cross-sectional view at point BB in the middle;

[0046] Figure 6 This is a bottom view of the valve cover in a multi-way valve according to this utility model;

[0047] Figure 7 This is a bottom view schematic diagram of the valve core in a multi-way valve according to this utility model;

[0048] Figure 8 This is a schematic diagram of a multi-way valve according to the present invention;

[0049] In the attached diagram: Valve cover 1, Valve cover mounting through hole 10, Cover body 11, Annular sidewall 12, Limiting center part 13, Limiting edge 14, Valve core 2, Valve core mounting through hole 20, First valve core flow channel 21, Second valve core flow channel 22, Valve core channel 23, Valve core groove 24, Stop part 25, Annular mounting edge 26, Valve core sealing gasket 3, Limiting hole 30, Flow through hole 31, PTFE material layer 32, EPDM material layer 33, Valve seat 4, Positioning hole 40, Valve seat flow channel 41, Inner flow port 42, Outer flow port 43, Annular mounting groove 44, Limiting block 45, Flow guiding space 5, Drive assembly 6, Driver 61, Drive shaft 62, Drive sealing gasket 63, Valve nozzle 7. Detailed Implementation

[0050] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0051] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0054] A multi-way valve includes a valve cover 1, a valve core 2, a valve core sealing gasket 3, and a valve seat 4;

[0055] The valve cover 1 has an installation cavity, through which the valve cover 1 seals the valve core 2 and the valve core sealing gasket 3 together onto the valve seat 4. The valve core sealing gasket 3 is installed between the valve core 2 and the valve seat 4. The valve core 2 can be driven and rotated along the central axis of the valve cover 1, the valve core sealing gasket 3 and the valve seat 4.

[0056] A flow guiding space 5 is formed between the outside of the valve core 2 and the mounting cavity;

[0057] The valve seat 4 has an even number of valve seat flow channels 41, and the two ports of the valve seat flow channels 41 are the inner flow port 42 and the outer flow port 43, respectively.

[0058] The valve core sealing gasket 3 has multiple flow holes 31, and each of the flow holes 31 is connected to the inner flow port 42.

[0059] The valve core 2 has a first valve core flow channel 21 and a second valve core flow channel 22 inside. The first valve core flow channel 21 and the second valve core flow channel 22 are not connected. The two ports of the first valve core flow channel 21 are located on two opposite sides of the valve core 2, and the two ports of the second valve core flow channel 22 are located inside the valve core 2 and on one side of it, respectively.

[0060] When the valve core 2 is driven and rotates along the central axis of the valve cover 1, the valve core sealing gasket 3 and the valve seat 4, the first valve core flow channel 21 and the second valve core flow channel 22 are respectively connected to the inner flow port 42 of any of the valve seat flow channels 41 to form an upper flow guide sub-channel and a lower flow guide sub-channel.

[0061] The two upper guide channels are connected to the guide space 5 to form an upper guide channel;

[0062] The two lower guide channels are interconnected to form a lower guide channel.

[0063] like Figure 1-3 As shown, this multi-port valve is used in the thermal management system of new energy vehicles and is a core component for achieving coordinated control of three major loops: "motor and electronic control thermal management," "battery thermal management," and "cabin thermal management." It has six flow ports. One half of the valve seat 4 has external flow ports 43 connected to different media, while the other half of the valve seat 4 has external flow ports 43 connected to the three management systems: "motor and electronic control thermal management," "battery thermal management," and "cabin thermal management." When the new energy vehicle thermal management system is activated, the built-in valve core 2 can control the flow path of the corresponding media according to the independent cooling or heating needs of each management system. The specific flow path of the media will vary depending on the selected guide channel.

[0064] like Figure 4 As shown, when the upper flow channel is selected, the medium flows from the external flow port 43 of the valve seat 4 into the corresponding valve seat flow channel 41, passes through the flow hole 31 on the valve core sealing gasket 3, enters the internal flow port 42 of the valve seat flow channel 41, and then flows into the corresponding first valve core flow channel 21. Since the two ends of the first valve core flow channel 21 are located on opposite sides of the valve core 2, the medium enters the flow guiding space 5 formed between the outside of the valve core 2 and the mounting cavity of the valve cover 1 and the outside of the valve core 2 through the first valve core flow channel 21. Buffered by the flow guiding space 5, the medium then flows through another first valve core flow channel 21, through the flow hole 31 of the valve core sealing gasket 3 and the internal flow port 42 of the valve seat flow channel 41, and flows out from the external flow port 43 of the corresponding system in the three major management systems, providing the medium required for cooling or heating of that system.

[0065] like Figure 5 As shown, when the lower flow channel is selected, the medium flows from the external flow port 43 of the valve seat 4 into the corresponding valve seat flow channel 41, passes through the flow hole 31 of the valve core sealing gasket 3 and enters the internal flow port 42 of the valve seat flow channel 41, and then flows into the corresponding second valve core flow channel 22. Since one end of the two second valve core flow channels 22 is connected to each other, the medium enters the connection point inside the valve core 2 through the second valve core flow channel 22, and then flows into the internal flow port 42 of the corresponding valve seat flow channel 41 through the other second valve core flow channel 22. After passing through the flow hole 31 of the valve core sealing gasket 3, it flows out from the external flow port 43 of the corresponding system in the three major management systems, providing the medium required for cooling or heating the system.

[0066] Since the first valve core flow channel 21 and the second valve core flow channel 22 are not connected, the medium flow in the upper and lower guide channels is independent of each other. When the vehicle's operating conditions change and the thermal management requirements of the three major management systems change, the valve core 2 can be driven to rotate along the central axis, adjusting the connection between the first valve core flow channel 21, the second valve core flow channel 22, and the valve seat flow channel 41, thereby switching between the upper and lower guide channels. This allows for flexible adaptation to the thermal management requirements under different operating conditions, ensuring the coordinated and efficient operation of the three major management systems.

[0067] Furthermore, this multi-way valve also has the following beneficial effects:

[0068] 1. Balanced force on valve core sealing gasket 3, improving system safety: In traditional multi-way valves, due to the unilateral inflow and outflow of the medium, the valve core sealing gasket 3 is subjected to unbalanced pressure and friction for a long time, which easily leads to wear and leakage. In this technical solution, the two ends of the first valve core flow channel 21 are distributed opposite each other. When the medium flows in from the upper guide channel, it directly impacts the valve core sealing gasket 3 and valve core 2 from bottom to top. After being buffered by the guide space 5, it flows again and then impacts the valve core sealing gasket 3 and valve core 2 from bottom to top. At the same time, when the medium flows in from the lower guide channel, it directly impacts the valve core sealing gasket 3 and valve core 2 from bottom to top. Combining the different impact directions of the upper and lower guide channels on the valve core sealing gasket 3, and the different positions of the first valve core flow channel 21 and the second valve core flow channel 22 in the valve core 2, not only is the unidirectional pressure of the medium on the valve core sealing gasket 3 reduced, but also the pressure concentration caused by mutual interference of the medium in the valve core 2 is avoided. This makes the fluid pressure and friction force on valve core 2 and valve core gasket 3 more balanced, reducing wear caused by excessive unidirectional pressure when the car frequently starts and stops and switches operating conditions, thereby extending service life, reducing the risk of coolant leakage, ensuring the safe operation of the thermal management system, and improving the reliability of vehicle components.

[0069] 2. Reduced Energy Consumption and Costs, Enhanced Economic Efficiency: The traditional single-sided high pressure structure results in high resistance to valve core 2 rotation, high driving energy consumption, and rapid wear of driving components. This solution optimizes the flow channel layout. The upper guide channel has a buffer space 5, while the lower guide channel guides the medium to flow inside valve core 2. This reduces concentrated stress on valve core 2, decreasing resistance during rotation and eliminating the need for excessive energy to overcome resistance, thus reducing system energy consumption. Simultaneously, it reduces the load on the components driving valve core 2, lowers durability requirements, and reduces maintenance and replacement frequency, thereby reducing manufacturing and maintenance costs and improving the economic efficiency of the thermal management system for new energy vehicles.

[0070] 3. Optimized loop control and improved thermal management efficiency: Since the first valve core flow channel 21 and the second valve core flow channel 22 are not connected, the upper and lower guide channels are independent, avoiding mixing and interference between media from different loops. The design of the valve seat flow channel 41's external flow port 43, with half connected to the external medium and half connected to the three major management systems, combined with the clear flow paths of the upper and lower guide channels, allows for precise matching of the cooling or heating requirements of each management system. Rotation of the valve core 2 enables more diverse path combinations, flexibly adjusting the distribution of the medium in the three management systems, achieving coordinated control, improving the overall vehicle energy utilization efficiency, and optimizing the performance of the thermal management system.

[0071] To further explain, the two adjacent first valve core flow channels 21 can be combined or set separately.

[0072] like Figure 4 and Figure 7 As shown, the two adjacent first valve core flow channels 21 can be combined or separated, mainly to improve the adaptability and performance of the multi-way valve under different operating conditions. The specific reasons are as follows:

[0073] From the perspective of media flow regulation, when two adjacent first valve core flow channels 21 are combined, a wider flow channel can be formed, enabling the delivery of a larger flow rate of media in a short time. For example, when the load on the motor control system increases sharply and a large amount of cooling media is needed for rapid cooling, the combined flow channels can meet the high flow rate demand and avoid affecting the heat dissipation effect due to insufficient flow. When the two flow channels are set separately, the media flow rate can be controlled separately, achieving a more precise flow rate distribution. For example, when different components in the "motor control thermal management" system have different cooling media requirements, the separately set flow channels can accurately deliver the corresponding flow rate, improving energy utilization efficiency.

[0074] From the perspective of pressure balance, the combined setting allows the medium to converge in the initial stage of inflow, reducing the pressure loss caused by dispersed flow and allowing the medium to enter the guide space 5 more smoothly; the separate setting allows the medium to be more dispersed when it flows in, further reducing the local impact force on the valve core sealing gasket 3. Combined with the buffering effect of the guide space 5, it can more effectively balance the pressure on the valve core sealing gasket 3 and reduce wear.

[0075] Furthermore, this flexible configuration can adapt to different valve core 2 structural designs and manufacturing processes. Within the space-constrained valve core 2, a combined configuration can save space; while a separate configuration facilitates processing and maintenance. The more suitable configuration can be selected according to actual production needs, reducing manufacturing difficulty and costs.

[0076] In summary, this configuration allows multi-way valves to better cope with the complex and varied operating conditions in the thermal management system of new energy vehicles, taking into account flow regulation, pressure balance and manufacturing convenience, and improving overall performance.

[0077] To further explain, the two adjacent second valve core flow channels 22 can be combined or set separately.

[0078] like Figure 5 and Figure 7 As shown, the two adjacent second valve core flow channels 22 can be combined or set separately to adapt to the complex operating conditions in the thermal management system of new energy vehicles and further optimize the performance of the multi-way valve. The specific reasons are as follows:

[0079] From the perspective of structural simplification and connectivity efficiency, when two adjacent second valve core flow channels 22 are combined, a groove structure is naturally formed. This groove enables the connection between the two flow channels, eliminating the need for an additional dedicated connecting flow channel in the middle of the valve core 2. This design simplifies the internal structural complexity of the valve core 2, reduces processing steps, and lowers manufacturing difficulty and cost. Simultaneously, the groove-based connection results in a smoother flow channel transition, reducing resistance during medium flow and improving the medium flow efficiency at the connection point, thus avoiding localized eddies or pressure losses caused by additional flow channels.

[0080] Regarding media flow efficiency, when two adjacent second valve core channels 22 are combined, a wider flow path is formed, reducing resistance during media flow. For example, in battery thermal management systems that require rapid heating or cooling and a large volume of media to flow quickly, the combined channels can accelerate media delivery, improve heat exchange efficiency, and ensure that the battery operates within a suitable temperature range.

[0081] From the perspective of pressure regulation and sealing protection, the combined second valve core flow channel 22 allows the medium to converge and then quickly discharge, reducing the impact of local pressure fluctuations on the valve core 2 and valve core sealing gasket 3. Separate channels, on the other hand, distribute the medium pressure across different flow channels, preventing any single channel from bearing excessive pressure. Combined with the structure where the two ends of the second valve core flow channel 22 are located inside the valve core 2 and on one side, respectively, the combined arrangement further optimizes the distribution of the medium's impact force on the valve core sealing gasket 3. Coupled with the pressure balancing effect of the guide channel, this results in more uniform stress on the valve core sealing gasket 3, extending its service life.

[0082] Furthermore, this configuration enhances the design flexibility and compatibility of multi-way valves. Different vehicle models have varying thermal management system layouts, space constraints, and performance requirements; combining or separating the configurations allows for adjustments to the flow path structure based on actual needs. In space-constrained vehicles, a combined configuration saves internal space in the valve core 2; while for high-end vehicles requiring precise control, a separate configuration improves system adjustment accuracy, reduces compatibility with other components, and thus lowers overall design and manufacturing costs.

[0083] In summary, the two adjacent second valve core flow channels 22 can be combined or set separately, which can better balance the medium flow efficiency, pressure stability and design compatibility, enabling the multi-way valve to play a more efficient synergistic control role in the three major thermal management systems of new energy vehicles.

[0084] To further clarify, the number of the first valve core flow channels 21 is three;

[0085] Two adjacent first valve core flow channels 21 are merged to form valve core channel 23, while the other first valve core flow channel 21 is set separately.

[0086] When the unmerged first valve core flow channel 21 is connected to the valve seat flow channel 41, only one first valve core flow channel 21 in the valve core channel 23 is connected to the valve seat flow channel 41 for flow.

[0087] When the unmerged first valve core flow channel 21 is not connected to the valve seat flow channel 41, both first valve core flow channels 21 in the valve core channel 23 are connected to the valve seat flow channel 41.

[0088] like Figure 7 As shown, the number of first valve core flow channels 21 is set to three, with two adjacent channels merged to form valve core channel 23, and the other channel set separately. Simultaneously, based on the communication status between the unmerged first valve core flow channel 21 and the valve seat flow channel 41, the communication status between the first valve core flow channel 21 and the valve seat flow channel 41 in valve core channel 23 is adjusted. This design is primarily to further improve the adaptability and adjustment accuracy of the multi-way valve in the thermal management system of new energy vehicles. The specific reasons are as follows:

[0089] From the perspective of flow rate tiered control, this setting allows for more precise flow rate regulation. When the unmerged first valve core flow channel 21 is connected to the valve seat flow channel 41, and only one first valve core flow channel 21 in the valve core channel 23 is connected to the valve seat flow channel 41, the overall medium flow rate in the guide channel is at a low level, which can meet the needs of each loop in the thermal management system under low load conditions, such as when the cabin only needs slight heating or the motor and electronic control system is running at low power. However, when the unmerged first valve core flow channel 21 is not connected to the valve seat flow channel 41, and both first valve core flow channels 21 in the valve core channel 23 are connected to the valve seat flow channel 41, the medium flow rate in the upper guide channel increases significantly, which can cope with high load conditions in each loop, such as when a large amount of cooling medium is needed for battery fast charging. Through this tiered flow rate control, energy waste can be avoided and the energy utilization efficiency of the thermal management system can be improved.

[0090] Regarding the flexibility of flow path switching, the arrangement of the three first valve core flow channels 21 allows for a wider variety of flow path combinations in the upper guide channel. Combined with the rotation of the valve core 2, it is possible to quickly switch between flow paths corresponding to different flow rates, meeting the rapid response requirements of the thermal management system under different operating conditions. For example, when a car suddenly switches from low speed to high speed, the load on the motor and electronic control system increases instantaneously, requiring a rapid increase in the cooling medium flow rate. This design can quickly achieve flow path switching, ensuring that heat dissipation keeps up in time.

[0091] From the perspective of balancing structure and performance, merging two adjacent flow channels to form valve core channel 23 can reduce the space occupied by the flow channels while ensuring a certain flow capacity, making the internal structure of valve core 2 more compact and suitable for the miniaturization requirements of new energy vehicles. On the other hand, retaining a separately set flow channel can play a role when fine adjustment is required, thus balancing structural compactness and adjustment precision.

[0092] Furthermore, this design enhances system reliability. When one flow channel experiences a minor blockage or malfunction, the other flow channels can compensate for its function to some extent, reducing the risk of the entire upper guide channel failing due to a problem with a single flow channel and ensuring the stable operation of the thermal management system.

[0093] In summary, this arrangement of the three first valve core flow channels 21 can better meet the requirements of the thermal management system of new energy vehicles in terms of flow regulation, path switching, compact structure and reliability, and improve the overall performance of the system.

[0094] To further explain, there are four second valve core flow channels 22, and the four second valve core flow channels 22 are combined in pairs to form two valve core grooves 24;

[0095] The two valve core grooves 24 are respectively connected to the four valve seat flow channels 41;

[0096] The two valve core grooves 24, the valve core channel 23, and the separately provided first valve core flow channel 21 are arranged in a ring around the center of the valve core 2. The two valve core grooves 24 are located on both sides of the valve core channel 23, so as to space the valve core channel 23 and the separately provided first valve core flow channel 21.

[0097] like Figure 7 and Figure 8As shown, in a preferred embodiment, the number of second valve core flow channels 22 is set to four, which are combined in pairs to form two valve core grooves 24. The two valve core grooves 24, the valve core channel 23, and the separately set first valve core flow channel 21 are arranged in a ring around the center of the valve core 2. The two valve core grooves 24 are located on both sides of the valve core channel 23 to separate the valve core channel 23 and the separately set first valve core flow channel 21. This design is mainly to optimize the internal space layout of the multi-way valve, improve the medium flow efficiency and the stability of the channel switching. The specific reasons are as follows:

[0098] From the perspective of space utilization and force balance, the annular distribution around the center of valve core 2 allows each flow channel and groove to occupy space evenly inside valve core 2, avoiding excessively dense or sparse local structures. This symmetrical layout allows valve core 2 to experience more balanced forces during rotation, reducing centrifugal force deviations caused by uneven mass distribution, lowering the load on drive component 6, and extending its service life. At the same time, the annular distribution makes the distance from each flow channel to the center of valve core 2 similar, resulting in more uniform pressure loss when the medium switches between different flow channels, facilitating precise flow control.

[0099] Regarding media flow and interference isolation, the two valve core grooves 24, separating the valve core channel 23 and the separately configured first valve core flow channel 21, effectively reduce mutual interference between the media flowing in the upper and lower guide channels. The media in the upper guide channel is transmitted through the valve core channel 23 and the separately configured first valve core flow channel 21, while the media in the lower guide channel is transmitted through the two valve core grooves 24. The physical interval formed by the annular distribution reduces the impact of heat exchange and pressure fluctuations between the flow channels. For example, when the motor control system requires a low-temperature cooling medium in the upper guide channel, while the cabin requires a high-temperature heating medium in the lower guide channel, the spacing design reduces the heat mixing of the hot and cold media, improving thermal management efficiency.

[0100] In terms of flexibility in path switching, the annular distribution, combined with the rotation of valve core 2, allows for smoother connection between each flow channel and the valve seat flow channel 41. When valve core 2 rotates, the annularly distributed flow channels can quickly connect or disconnect with the corresponding valve seat flow channels 41, shortening the response time for path switching. The two valve core grooves 24 connect with the four valve seat flow channels 41, and combined with the characteristics of the annular distribution, more diverse path combinations can be formed to meet the coordinated needs of the three major thermal management circuits under different operating conditions, such as simultaneously providing media to the battery and the cabin without interference.

[0101] Furthermore, this design enhances the stability of the valve core 2 structure. The annular distribution makes the wall thickness of each part of the valve core 2 more uniform, reducing the problem of local structural weakness caused by the opening of the flow channel. It is less prone to deformation when subjected to medium pressure, ensuring the sealing performance of the flow channel and the overall structural strength, and further improving the reliability of the multi-way valve under complex operating conditions.

[0102] In summary, this ring-shaped distribution design takes into account space utilization, flow efficiency, switching flexibility, and structural stability, enabling multi-way valves to serve the coordinated control of the thermal management system of new energy vehicles more efficiently.

[0103] To further explain, the valve cover 1 includes an integrally formed cover body 11 and an annular sidewall 12;

[0104] The inner cover surface of the cover 11 is provided with a limiting center portion 13 and two limiting edges 14. The limiting center portion 13 is located at the center of the inner cover surface of the cover 11. One end of each of the two limiting edges 14 is connected to the limiting center portion 13, and the other end of each of the two limiting edges 14 is connected to the annular sidewall 12. The two limiting edges 14 divide the inner cover surface of the cover 11 into a large cover area and a small cover area in an uneven manner.

[0105] The valve core 2 has a protruding stop portion 25 on its upper surface. The stop portion 25 is located between the valve core channel 23 and the separately provided first valve core flow channel 21. The stop portion 25 can move along the large cover area under the rotation of the valve core 2, and the stop portion 25 can abut against the two limiting edges 14.

[0106] like Figure 6 and Figure 8 As shown, the valve cover 1 adopts an integrally formed cover body 11 and annular sidewall 12, and the inner cover surface of the cover body 11 is provided with a limiting center part 13 and two limiting edges 14. The upper surface of the valve core 2 is provided with a stop part 25 and its range of motion is limited. This design is mainly to improve the accuracy and stability of the multi-way valve operation. The specific reasons are as follows:

[0107] From the perspective of gear control precision, the two limiting edges 14 divide the inner surface of the cover 11 into a non-uniform large cover area and a small cover area. The gear position 25 only moves within the large cover area and can abut against the two limiting edges 14 in that area. Combined with the aforementioned arrangement of the first valve core flow channel 21, when the gear position 25 moves at different positions within the large cover area and abuts against different limiting edges 14, it can correspondingly control the communication state between the unmerged first valve core flow channel 21 and the valve seat flow channel 41, as well as the communication status between the first valve core flow channel 21 and the valve seat flow channel 41 in the valve core channel 23. For example, when the gear position 25 abuts against a certain limiting edge 14, the unmerged first valve core flow channel 21 is connected to the valve seat flow channel 41, and only one first valve core flow channel 21 is connected in the valve core channel 23; while when it abuts against another limiting edge 14, the unmerged first valve core flow channel 21 is not connected, and both first valve core flow channels 21 in the valve core channel 23 are connected, realizing precise gear switching and ensuring that the medium flow regulation meets the requirements of the thermal management system.

[0108] Specifically, such as Figure 8As shown, the six valves 7 are defined as valve 7a, valve 7b, valve 7c, valve 7d, valve 7e and valve 7f, respectively.

[0109] When the gear position 25 is in the position of mode 1, valve nozzle 7a is connected to valve nozzle 7d, valve nozzle 7b is connected to valve nozzle 7f, and valve nozzle 7c is connected to valve nozzle 7e.

[0110] When the gear position 25 is in the position of mode 2, valve nozzle 7a is connected to valve nozzle 7e, valve nozzle 7b is connected to valve nozzle 7f, and valve nozzle 7c is connected to valve nozzle 7d.

[0111] When the gear position 25 is in the position of mode 3, valve nozzle 7a is connected to valve nozzle 7e, valve nozzle 7b is connected to valve nozzle 7d, and valve nozzle 7c is connected to valve nozzle 7f.

[0112] When the gear position 25 is in mode 4, valve nozzle 7a is connected to valve nozzle 7d, valve nozzle 7b is connected to valve nozzle 7e, and valve nozzle 7c is connected to valve nozzle 7f.

[0113] When the gear position 25 is in mode 5, valve nozzle 7a is connected to valve nozzle 7f, valve nozzle 7b is connected to valve nozzle 7e, and valve nozzle 7c is connected to valve nozzle 7d.

[0114] When the gear position 25 is in mode 6, valve nozzle 7a is connected to valve nozzle 7d, valve nozzle 7b is connected to valve nozzle 7f, and valve nozzle 7c is connected to valve nozzle 7e.

[0115] In terms of structural stability, the one-piece molded cover 11 and annular sidewall 12 enhance the overall strength of the valve cover 1, enabling it to better withstand the pressure from the rotation of the valve core 2 and the flow of the medium. The limiting center part 13 and the two limiting edges 14 provide a stable limiting base for the stop part 25, preventing the stop part 25 from shifting or shaking during operation, ensuring the accuracy of the rotation angle of the valve core 2, and thus ensuring the stability of the connection between the various flow channels, reducing medium leakage or abnormal flow caused by misalignment of the valve core 2.

[0116] Furthermore, this design enhances the intuitiveness and reliability of operation. The range of motion of the position switch 25 is limited to the large cover area, allowing operators or the drive mechanism to clearly determine the current flow path connectivity through the position of the position switch 25, facilitating the adjustment and maintenance of the multi-way valve. Simultaneously, the feedback generated when the position switch 25 abuts against the limit edge 14 clearly indicates that a specific position has been reached, preventing excessive rotation of the valve core 2 and thus avoiding damage to the flow path and extending the service life of the multi-way valve.

[0117] In summary, the design of the valve cover 1 and the gear position 25, in conjunction with the flow channel setting, not only ensures precise gear control and structural stability but also improves the ease of operation, enabling the multi-way valve to more reliably serve the thermal management system of new energy vehicles.

[0118] Furthermore, it also includes a valve nozzle 7, which is installed corresponding to the external flow port 43 and is fixedly installed on the outside of the valve seat 4.

[0119] like Figure 1-5 As shown, when the external flow port 43 is directly connected to the external pipeline, the connection may become loose due to the mismatch between the pipeline size and shape and the port. However, the valve nozzle 7 can be designed to be adapted to the specifications of the external pipeline, ensuring a more reliable sealing connection between the pipeline and the valve seat flow channel 41, reducing the risk of leakage of the medium during transmission, and ensuring the stability of the medium delivery in the thermal management system.

[0120] Therefore, the valve nozzle 7 provides a standardized interface for the connection between the external pipeline and the valve seat flow channel 41, which facilitates the universal installation of pipelines in the thermal management system of different vehicle models and improves the adaptability of the multi-way valve.

[0121] Further explanation includes a drive assembly 6, which includes a driver 61, a drive shaft 62, and a drive sealing gasket 63;

[0122] The valve cover 1 has a valve cover mounting through hole 10 in the center;

[0123] The valve core 2 has a valve core mounting through hole 20 at its center, and the upper surface of the valve core 2 has an annular mounting edge 26 protruding around the valve core mounting through hole 20. The drive sealing gasket 63 is installed inside the annular mounting edge 26.

[0124] The valve seat 4 has a positioning hole 40 at its center;

[0125] The driver 61 is installed above the valve cover 1. The transmission end of the driver 61 is fixedly installed with one end of the drive shaft 62. The other end of the drive shaft 62 passes through the valve cover mounting through hole 10, the center of the drive sealing gasket 63 and the valve core mounting through hole 20 in sequence and is rotatably installed in the positioning hole 40. The shaft body of the drive shaft 62 is fixedly installed with the valve core 2.

[0126] like Figure 1-5 As shown, the drive assembly 6 is a combination of a driver 61, a drive shaft 62, and a drive sealing gasket 63, and it is fitted with the valve cover 1, valve core 2, and valve seat 4 through a specific installation method. This design aims to ensure the accuracy, sealing, and stability of the valve core 2's rotation. The specific reasons are as follows:

[0127] From the perspective of power transmission precision, the actuator 61 is mounted above the valve cover 1, with its transmission end fixed to one end of the drive shaft 62. The other end of the drive shaft 62 passes through relevant components and is rotatably mounted in the positioning hole 40 of the valve seat 4, with the shaft body fixed to the valve core 2. This structure forms a stable transmission link, allowing the power of the actuator 61 to be directly transmitted to the valve core 2 via the drive shaft 62, reducing power loss and ensuring that the valve core 2 rotates precisely as instructed. The positioning hole 40 provides radial positioning for the drive shaft 62, preventing flow channel misalignment caused by the drive shaft 62 wobbling during valve core 2 rotation, ensuring the accuracy of switching between each flow channel, and meeting the precise control requirements of the thermal management system for the media passage.

[0128] Regarding sealing performance, the drive sealing gasket 63 is installed within the annular mounting edge 26 on the upper surface of the valve core 2, with the drive shaft 62 passing through its center. When the drive shaft 62 rotates, the drive sealing gasket 63 tightly fits against the drive shaft 62 and the annular mounting edge 26, effectively preventing media leakage from the gap between the valve core 2 and the drive shaft 62. Combined with the sealing structures of other parts of the multi-way valve, this forms a comprehensive sealing system. Especially in high-pressure media environments, this sealing design maintains good sealing performance, reduces the risk of leakage, and ensures the safe operation of the thermal management system.

[0129] From a structural stability perspective, the drive shaft 62 passes sequentially through the center of the valve cover 1, the center of the drive sealing gasket 63, and the center of the valve core 2, ensuring that the drive assembly 6 is concentric with the main structure of the multi-way valve and reducing the eccentric force when the valve core 2 rotates. The annular mounting edge 26 provides a stable mounting base for the drive sealing gasket 63, preventing the valve core sealing gasket 3 from shifting during the rotation of the drive shaft 62 and ensuring the durability of the sealing effect. Simultaneously, this mounting method allows the drive assembly 6 to form an organic whole with the valve cover 1, valve core 2, and valve seat 4, improving the structural stability of the multi-way valve under complex operating conditions such as vehicle bumps.

[0130] Furthermore, this design facilitates assembly and maintenance. The components are connected through methods such as threading and fixing, making the assembly process clear. If the actuator 61 needs repair or the seals need replacement later, the disassembly can be reversed, reducing maintenance difficulty. The external design of the actuator 61 also facilitates connection to the vehicle control system, enabling remote or automatic control of the valve core 2's rotation, improving the automation level of the multi-way valve, and meeting the needs of intelligent thermal management in new energy vehicles.

[0131] In summary, the structure and installation method of drive component 6 play an important role in accurately transmitting power, ensuring sealing, improving stability, and facilitating maintenance, providing reliable power support for the efficient and coordinated control of the three thermal management loops of the multi-way valve.

[0132] It should be noted that the driver 61 is an existing valve body drive motor, such as a stepper motor, and is not limited in this technical solution.

[0133] To further explain, the upper surface of the valve seat 4 is provided with an annular mounting groove 44 around the positioning hole 40, and the groove surface of the annular mounting groove 44 protrudes to form a plurality of limiting blocks 45, and the plurality of limiting blocks 45 and the plurality of internal flow ports 42 are arranged alternately.

[0134] The valve core sealing gasket 3 is installed inside the annular mounting groove 44, and the valve core sealing gasket 3 has multiple limiting holes 30, which are installed one-to-one with the limiting block 45.

[0135] like Figure 2 As shown, an annular mounting groove 44 is formed around the positioning hole 40 on the upper surface of the valve seat 4. Multiple limiting blocks 45 protrude from the groove surface, and the valve core sealing gasket 3 is installed in the annular mounting groove 44, with its limiting hole 30 corresponding to the limiting block 45 one by one. This design is mainly to enhance the positioning stability and sealing reliability of the valve core sealing gasket 3. The specific reasons are as follows:

[0136] From the perspective of positioning accuracy, the annular mounting groove 44 provides a dedicated installation space for the valve core sealing gasket 3, which can initially limit the overall position of the valve core sealing gasket 3 and prevent the valve core sealing gasket 3 from shifting under the rotation of the valve core 2 or the action of medium pressure. Multiple limiting blocks 45 correspond one-to-one with the limiting holes 30 on the valve core sealing gasket 3, further achieving circumferential positioning of the valve core sealing gasket 3 and preventing circumferential sliding of the valve core sealing gasket 3 during operation due to the rotation of the valve core 2 or the impact of the medium. This ensures that the flow through hole 31 on the valve core sealing gasket 3 is always precisely aligned with the inner flow port 42 of the valve seat flow channel 41, avoiding obstruction or leakage of medium flow due to misalignment, and ensuring the smooth operation of the upper and lower guide channels.

[0137] Regarding enhanced sealing performance, the annular mounting groove 44 provides a certain degree of enclosure for the valve core gasket 3. When the medium flows within the flow channel and generates pressure, this pressure causes the valve core gasket 3 to tightly adhere to the groove wall and bottom of the annular mounting groove 44, enhancing the sealing performance between the valve core gasket 3 and the valve seat 4. Simultaneously, the limiting block 45, after passing through the limiting hole 30 of the valve core gasket 3, makes close contact with the hole wall, forming a localized enhanced sealing area around the limiting block 45. This reduces the possibility of medium leakage from the gap between the valve core gasket 3 and the valve seat 4. Especially in situations where multi-way valves frequently switch passages and the medium pressure fluctuates significantly, this structure effectively maintains the stability of the sealing performance and reduces the risk of thermal management system failures caused by seal failure.

[0138] Furthermore, this design improves assembly efficiency. During the assembly of the multi-way valve, the annular mounting groove 44 and the limiting block 45 provide rapid positioning. Operators only need to align the limiting hole 30 of the valve core sealing gasket 3 with the limiting block 45 and place it into the annular mounting groove 44 to complete the precise installation of the valve core sealing gasket 3, reducing adjustment time during assembly and improving production efficiency. Simultaneously, the limiting structure also facilitates the replacement of the valve core sealing gasket 3 during later maintenance, ensuring that the replaced valve core sealing gasket 3 maintains accurate positioning and a good seal.

[0139] In summary, this mounting structure of valve seat 4 and valve core sealing gasket 3, by strengthening positioning and sealing, provides an important guarantee for the stable operation of the multi-way valve and further improves the reliability of the thermal management system of new energy vehicles.

[0140] To further explain, the valve core sealing gasket 3 includes a PTFE material layer 32 and an EPDM material layer 33;

[0141] The drive sealing gasket 63 and the valve core sealing gasket 3 have the same structure.

[0142] like Figure 2 As shown, both the valve core sealing gasket 3 and the drive sealing gasket 63 are made using a two-stage injection molding method. One side is made of PTFE material to increase wear resistance, and the other side is made of EPDM material as a rubber matrix for assembly and compression sealing. This design is mainly to balance the wear resistance and sealing performance of the sealing components, allowing the valve core sealing gasket 3 and the drive sealing gasket 63 to maintain good wear resistance and sealing performance in complex working environments, providing a reliable guarantee for the stable operation of the multi-way valve, and further improving the reliability and durability of the thermal management system of new energy vehicles.

[0143] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A multi-way valve, comprising a valve cover (1), a valve core (2), a valve core sealing gasket (3), and a valve seat (4); The valve cover (1) has an installation cavity. The valve cover (1) seals the valve core (2) and the valve core sealing gasket (3) together onto the valve seat (4) through the installation cavity. The valve core sealing gasket (3) is installed between the valve core (2) and the valve seat (4). The valve core (2) can be driven and rotated along the central axis of the valve cover (1), the valve core sealing gasket (3) and the valve seat (4). Its features are, A flow guiding space (5) is formed between the outside of the valve core (2) and the mounting cavity; The valve seat (4) has an even number of valve seat flow channels (41), and the two ports of the valve seat flow channels (41) are an inner flow port (42) and an outer flow port (43); The valve core sealing gasket (3) has multiple flow holes (31), and each flow hole (31) is connected to the inner flow port (42). The valve core (2) has a first valve core flow channel (21) and a second valve core flow channel (22) inside. The first valve core flow channel (21) and the second valve core flow channel (22) are not connected. The two ports of the first valve core flow channel (21) are located on opposite sides of the valve core (2), and the two ports of the second valve core flow channel (22) are located inside the valve core (2) and on one side of it, respectively. When the valve core (2) is driven and rotates along the central axis of the valve cover (1), valve core sealing gasket (3) and valve seat (4), the first valve core flow channel (21) and the second valve core flow channel (22) are respectively connected to the inner flow port (42) of any of the valve seat flow channels (41) to form an upper flow guide sub-channel and a lower flow guide sub-channel; The two upper guide channels are connected to the guide space (5) to form an upper guide channel; The two lower guide channels are interconnected to form a lower guide channel.

2. A multi-way valve according to claim 1, characterized in that, The two adjacent first valve core flow channels (21) can be combined or set separately.

3. A multi-way valve according to claim 2, characterized in that, The two adjacent second valve core flow channels (22) can be combined or set separately.

4. A multi-way valve according to claim 3, characterized in that, The number of the first valve core flow channels (21) is three; Two adjacent first valve core flow channels (21) are merged to form a valve core channel (23), while the other first valve core flow channel (21) is set separately. When the unmerged first valve core flow channel (21) is connected to the valve seat flow channel (41), only one first valve core flow channel (21) in the valve core channel (23) is connected to the valve seat flow channel (41) for circulation; When the unmerged first valve core flow channel (21) is not connected to the valve seat flow channel (41), both first valve core flow channels (21) in the valve core channel (23) are connected to the valve seat flow channel (41).

5. A multi-way valve according to claim 4, characterized in that, The number of the second valve core flow channels (22) is four, and the four second valve core flow channels (22) are combined in pairs to form two valve core grooves (24); The two valve core grooves (24) are respectively connected to the four valve seat flow channels (41); The two valve core grooves (24), the valve core channel (23), and the separately provided first valve core flow channel (21) are arranged in a ring around the center of the valve core (2). The two valve core grooves (24) are located on both sides of the valve core channel (23) to space the valve core channel (23) and the separately provided first valve core flow channel (21).

6. A multi-way valve according to claim 5, characterized in that, The valve cover (1) includes an integrally formed cover body (11) and an annular sidewall (12); The inner cover surface of the cover (11) is provided with a limiting center part (13) and two limiting edges (14). The limiting center part (13) is located at the center of the inner cover surface of the cover (11). One end of each of the two limiting edges (14) is connected to the limiting center part (13), and the other end of each of the two limiting edges (14) is connected to the annular sidewall (12). The two limiting edges (14) divide the inner cover surface of the cover (11) into a large cover area and a small cover area in an uneven manner. The upper surface of the valve core (2) is provided with a stop part (25). The stop part (25) is located between the valve core channel (23) and the separately provided first valve core flow channel (21). The stop part (25) can move along the large cover area under the rotation of the valve core (2), and the stop part (25) can abut against the two limiting edges (14).

7. A multi-way valve according to claim 1, characterized in that, It also includes a valve nozzle (7), which is installed corresponding to the external flow port (43) and is fixedly installed on the outside of the valve seat (4).

8. A multi-way valve according to claim 1, characterized in that, It also includes a drive assembly (6), which includes a driver (61), a drive shaft (62), and a drive seal (63); The valve cover (1) has a valve cover mounting through hole (10) in the center; The valve core (2) has a valve core mounting through hole (20) at its center. The upper surface of the valve core (2) has an annular mounting edge (26) protruding around the valve core mounting through hole (20). The drive sealing gasket (63) is installed inside the annular mounting edge (26). The valve seat (4) has a positioning hole (40) at its center; The driver (61) is installed above the valve cover (1). The transmission end of the driver (61) is fixedly installed with one end of the drive shaft (62). The other end of the drive shaft (62) passes through the valve cover mounting through hole (10), the center of the drive sealing gasket (63) and the valve core mounting through hole (20) in sequence and is rotatably installed in the positioning hole (40). The shaft body of the drive shaft (62) is fixedly installed with the valve core (2).

9. A multi-way valve according to claim 8, characterized in that, The upper surface of the valve seat (4) is provided with an annular mounting groove (44) around the positioning hole (40), and the groove surface of the annular mounting groove (44) protrudes to form multiple limiting blocks (45), and the multiple limiting blocks (45) and the multiple internal flow ports (42) are arranged alternately. The valve core sealing gasket (3) is installed inside the annular mounting groove (44), and the valve core sealing gasket (3) has a plurality of limiting holes (30), which are installed one by one on the limiting block (45).

10. A multi-way valve according to claim 9, characterized in that, The valve core sealing gasket (3) includes a PTFE material layer (32) and an EPDM material layer (33); The drive sealing gasket (63) and the valve core sealing gasket (3) have the same structure.

Images