Electronic multi-way valve

Abstract

The application discloses an electronic multi-way valve, which comprises an actuator and a valve body. The actuator comprises a control circuit board, a motor and a transmission assembly. The control circuit board is configured to be communicatively connected with an external control device. The motor is electrically connected with the control circuit board to rotate under the control of the control circuit board. The transmission assembly is connected with a rotating shaft of the motor. The valve body is fixedly connected with the actuator. The valve body comprises a rotating body which is connected with an output end of the transmission assembly. When the rotating shaft of the motor rotates, the transmission assembly drives the rotating body to rotate. The rotation of the rotating body can switch flow channels of the valve body and adjust effective flow areas of different flow channels of the valve body. The application can switch flow channels and adjust effective flow areas of different flow channels of the valve body, so that the flow of different flow channels can be adjusted and the needs of different use scenarios can be adapted, for example, proportional distribution of liquid in different flow channels.

Description

Technical Field

[0001] This application relates to the field of multi-way valve technology, and more particularly to electronic multi-way valves. Background Technology

[0002] Thermal management systems are indispensable and play an increasingly important role in improving the efficiency and safety performance of batteries, motors, and electronic controls in new energy and hydrogen fuel cell vehicles.

[0003] Multi-way valves are crucial and indispensable components in thermal management systems. Because different components of a vehicle have varying heat requirements during operation, multi-way valves are used to achieve the rational distribution of heat and the reuse of waste heat. Furthermore, the use of multi-way valves is also involved in other technical fields.

[0004] Currently, in the market, the actuator and valve body of a multi-way valve can only be matched individually, both installed within the same housing. This means that for a multi-way valve, the valve body is unique, and the actuator cannot be selectively matched with different valve bodies. When users need to use different types of multi-way valves, such as changing the flow direction or adding flow channels, the entire multi-way valve must be replaced. Therefore, different multi-way valves need to be developed for different scenarios, resulting in long development cycles and high development costs.

[0005] In addition, since current multi-way valves can only switch flow channels in a fixed manner, they cannot adjust the effective flow area of ​​different flow channels, nor can they arbitrarily change the number or direction of flow channels. When in use, this may make the system (such as a thermal management system) more complex, heavier, and more expensive. Utility Model Content

[0006] The purpose of this application is to provide an electronic multi-way valve that can solve at least one of the technical problems mentioned in the background art.

[0007] To achieve the above objectives, this application provides an electronic multi-way valve, comprising: an actuator and a valve body; the actuator includes a control circuit board, a motor, and a transmission assembly; the control circuit board is configured to communicate with an external control device; the motor is electrically connected to the control circuit board to rotate under the control of the control circuit board; the transmission assembly is connected to the shaft of the motor; the valve body is fixedly connected to the actuator; the valve body includes a rotating body connected to the output end of the transmission assembly; when the shaft of the motor rotates, the transmission assembly drives the rotating body to rotate; the rotation of the rotating body can switch the flow channels of the valve body and adjust the effective flow area of ​​different flow channels of the valve body. The transmission assembly includes an end-rotating body, which is coaxial with and circumferentially fixedly connected to the rotating body. The actuator also includes a position detection module, which is used to detect the rotation angle of the end-rotating body. The position detection module is electrically connected to the control circuit board. The control circuit board acquires real-time data from the position detection module to obtain the rotation angle of the end-rotating body based on the real-time data and controls the rotation and stopping of the motor shaft based on the rotation angle.

[0008] Optionally, the position detection module includes a potentiometer, which includes a potentiometer body and a rotating shaft electrically connected to the control circuit board. The rotating shaft is coaxially connected to the end rotating body and is circumferentially fixed. When the end rotating body drives the rotating shaft to rotate, the potentiometer body outputs different resistance values ​​to the control circuit board in real time. The control circuit board obtains the rotation angle of the end rotating body based on the resistance value.

[0009] Optionally, the potentiometer body is mounted on the control circuit board, the rotating shaft has a shaft hole, the end rotating body has a rotating shaft portion, the rotating shaft portion is circumferentially fixedly mounted on the shaft hole, and the control circuit board has a through hole that avoids the rotating shaft portion.

[0010] Optionally, the position detection module includes a magnetic ring and at least two TMR chips. The magnetic ring is coaxially connected to the end rotating body and is circumferentially fixed. Each TMR chip is electrically connected to the control circuit board and is circumferentially distributed around the magnetic ring. When the end rotating body drives the magnetic ring to rotate, each TMR chip detects changes in the surrounding magnetic field and outputs a corresponding voltage value in real time. The control circuit board obtains the rotation angle of the end rotating body based on the voltage value.

[0011] Optionally, each of the TMR chips is mounted on the control circuit board, the end rotating body has a rotating shaft, the magnetic ring is fixedly connected to the rotating shaft, and the control circuit board has a through hole to avoid the rotating shaft.

[0012] Optionally, the actuator includes an actuator housing, the control circuit board, the motor, and the transmission assembly are disposed within the actuator housing, and the output end of the transmission assembly is exposed outward from a position within the actuator housing; the valve body includes a valve body housing, and the rotating body is disposed within the valve body housing and exposed outward from a position within the valve body housing; the actuator housing and the valve body housing are detachably fixed together to achieve a detachable fixed connection between the actuator and the valve body, and when the actuator housing and the valve body housing are assembled together, the output end of the transmission assembly is connected to the rotating body.

[0013] Optionally, the transmission assembly includes a worm, a worm gear, a first gear, a second gear, a final stage gear, a first gear positioning post, and a second gear positioning post. Each of the worm gear, the first gear, and the second gear includes a coaxial driving gear and a driven gear, with the radial dimension of each driving gear being larger than the radial dimension of the corresponding driven gear. The worm is mounted on the motor shaft, and the worm gear is mounted on the first gear positioning post, with the worm meshing with the driving gear of the worm gear. The first gear is mounted on the second gear positioning post, and its driving gear meshes with the driven gear of the worm gear. The second gear is mounted on the first gear positioning post, and the second gear is superimposed on the worm gear, with its driving gear meshing with the driven gear of the first gear, and the driven gear meshing with the final stage gear, which serves as the end rotating body.

[0014] Optionally, the valve body includes a valve body housing, the side wall of which is provided with multiple flow channels communicating with its internal space. The rotating body is a valve core, which includes a valve core body and a mounting shaft extending outward from the middle of one end of the valve core body. The valve core body is rotatably adapted to be installed in the internal space of the valve body housing. The mounting shaft extends from the valve body housing and is coaxial with and circumferentially fixedly connected to the end rotating body. Driven by the motor and the transmission assembly, the rotation of the valve core body can switch the flow channels or adjust the effective flow area of ​​different flow channels of the valve body.

[0015] Optionally, the valve body includes a valve body housing, a fixed plate, a movable plate, a rotating bracket serving as the rotating body, and a spring. The side wall of the valve body housing is provided with multiple flow channels communicating with its internal space. The fixed plate, the movable plate, and the rotating bracket are arranged sequentially from bottom to top in the internal space. The rotating bracket is fixedly connected to the movable plate. The spring is sleeved on the rotating bracket and abuts against the top wall of the valve body housing and the bottom of the rotating bracket. The top end of the rotating bracket forms a mounting shaft portion, which extends from the valve body housing and is coaxially and circumferentially fixedly connected to the end rotating body. Driven by the motor and the transmission assembly, the rotation of the rotating bracket drives the movable plate to rotate. The rotation of the movable plate can switch the flow channels and adjust the effective flow area of ​​different flow channels of the valve body.

[0016] Optionally, the valve body includes a valve body housing, at least two valve cores, a rotating bracket, and at least two gears. The sidewall of the valve body housing is provided with multiple flow channels communicating with its internal space. At least two valve cores are disposed in the internal space of the valve body housing. The upper middle part of each valve core is provided with a first mounting shaft portion, and the first mounting shaft portion is circumferentially fixedly sleeved with the corresponding gear. The bottom of the rotating bracket is provided with a gear portion, and the top of the rotating bracket is provided with a second mounting shaft portion. The gear portion meshes with each of the gears. The second mounting shaft portion extends from the valve body housing and is coaxially and circumferentially fixedly connected to the end rotating body. Driven by the motor and the transmission assembly, the rotation of the rotating bracket drives each of the gears and each of the valve cores to rotate. The rotation of each valve core can switch the flow channels and adjust the effective flow area of ​​different flow channels of the valve body.

[0017] In this embodiment, when the control circuit board controls the motor shaft to rotate based on an external control signal, the transmission component drives the rotating body to rotate. This rotation allows for switching the flow channels of the valve body and adjusting the effective flow area of ​​different channels. This, in turn, allows for adjusting the flow rate of different channels to suit various application scenarios, such as proportional distribution of fluid into different channels. Furthermore, by using a position detection module to detect the rotation angle of the end-rotor in real time, the control circuit board can control the motor's rotation and stop based on this real-time rotation angle. This enables high-precision control of the valve body's rotating body position, allowing for precise adjustment of the flow rate in different channels to achieve accurate proportional distribution of fluid. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the electronic multi-way valve in Embodiment 1 of this application.

[0019] Figure 2 This is an exploded view of the electronic multi-way valve in Embodiment 1 of this application.

[0020] Figure 3 This is a schematic diagram of the various flow channel adjustment states of the electronic multi-way valve in Embodiment 1 of this application.

[0021] Figure 4 This is a three-dimensional structural diagram of the electronic multi-way valve in Embodiment 2 of this application.

[0022] Figure 5 This is an exploded view of the electronic multi-way valve in Embodiment 2 of this application.

[0023] Figure 6 This is a side view of the electronic multi-way valve in Embodiment 2 of this application.

[0024] Figure 7This is a three-dimensional structural diagram of the electronic multi-way valve in Embodiment 3 of this application.

[0025] Figure 8 This is an exploded view of the electronic multi-way valve in Embodiment 3 of this application.

[0026] Figure 9 This is a schematic diagram of the various flow channel adjustment states of the electronic multi-way valve in Embodiment 3 of this application.

[0027] Figure 10 This is a three-dimensional structural diagram of the electronic multi-way valve in Embodiment 4 of this application.

[0028] Figure 11 This is an exploded view of the electronic multi-way valve in Embodiment 4 of this application.

[0029] Figure 12 This is a schematic diagram of the various flow channel adjustment states of the electronic multi-way valve in Embodiment 4 of this application.

[0030] Figure 13 This is a schematic diagram of the control circuit board and position detection module in the embodiments of this application.

[0031] Figure 14 This is a schematic diagram of the control circuit board and position detection module in another embodiment of this application.

[0032] Figure 15 This is a schematic block diagram of the control system according to an embodiment of this application. Detailed Implementation

[0033] To explain in detail the technical content, structural features, objectives and effects of this application, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0034] Please see Figures 1 to 15 This application discloses an electronic multi-way valve.

[0035] The electronic multi-way valve includes an actuator 1 and a valve body 2. The actuator 1 includes a control circuit board 10, a motor 11, and a transmission assembly 12. The control circuit board 10 is configured to communicate with an external control device. The motor 11 is electrically connected to the control circuit board 10 to rotate under the control of the control circuit board 10. The transmission assembly 12 is connected to the shaft of the motor 11. The valve body 2 is fixedly connected to the actuator 1. The valve body 2 includes a rotating body 21, which is connected to the output end of the transmission assembly 12. When the shaft of the motor 11 rotates, the transmission assembly 12 drives the rotating body 21 to rotate. The rotation of the rotating body 21 can switch the flow channels of the valve body 2 and adjust the effective flow area of ​​different flow channels of the valve body 2.

[0036] In this embodiment, when the control circuit board 10 controls the rotation of the motor 11 shaft based on the external control signal, the transmission component 12 drives the rotating body 21 to rotate. The rotation of the rotating body 21 can switch the flow channel of the valve body 2 and adjust the effective flow area of ​​different flow channels of the valve body 2, thereby adjusting the flow rate of different flow channels and adapting to the needs of the application scenario, such as distributing the liquid inlet ratio of different flow channels.

[0037] In some embodiments, the transmission assembly 12 includes an end rotating body 121, which is coaxial with and circumferentially fixedly connected to the rotating body 21.

[0038] Specifically, the end rotating body 121 is the final stage gear 121. The rotating body 21 may include a mounting shaft 211, and the final stage gear 121 may be sleeved on the mounting shaft 211.

[0039] More specifically, the transmission assembly 12 also includes a worm gear 122, a worm gear 123, a first gear 124, a second gear 125, a first gear positioning post 126, and a second gear positioning post 127. The worm gear 123, the first gear 124, and the second gear 125 each include coaxial driving gears 1231 / 1241 / 1251 and driven gears 1232 / 1242 / 1252. The radial dimension of the driving gears 1231 / 1241 / 1251 is greater than the radial dimension of the corresponding driven gears 1232 / 1242 / 1252. That is, the radial dimension of the driving gear 1231 is greater than the radial dimension of the driven gear 1232, the radial dimension of the driving gear 1241 is greater than the radial dimension of the driven gear 1242, and the radial dimension of the driving gear 1251 is greater than the radial dimension of the driven gear 1252. The worm 122 is mounted on the shaft of the motor 11, and the worm gear 123 is mounted on the first gear positioning post 126. The worm 122 meshes with the driving wheel 1231 of the worm gear 123. The first gear 124 is mounted on the second gear positioning post 127, and its driving wheel 1241 meshes with the driven wheel 1231 of the worm gear 123. The second gear 125 is mounted on the first gear positioning post 126, and the second gear 125 is superimposed on the worm gear 123. The driving wheel 1251 of the second gear 125 meshes with the driven wheel 1242 of the first gear 124, and the driven wheel 1252 of the second gear 125 meshes with the final stage gear 121, which is the final rotating body 121. Since the three reduction gears are composed of a large driving gear and a small driven gear, it facilitates speed reduction and torque transmission. The torque of the motor 11 is transmitted to the worm gear 123 through the worm 122, then to the first gear 124, and finally to the second gear 125. The second gear 125 drives the final stage gear 121 to rotate. Furthermore, since the worm gear 123 and the second gear 125 share the first gear positioning pin 126, it is easier to reduce the number of positioning pins and save space. Of course, the transmission assembly 12 is not limited to the above-described scheme.

[0040] Specifically, the actuator 1 also includes a position detection module 13, which detects the rotation angle of the end rotating body 121. The position detection module 13 is electrically connected to the control circuit board 10. The control circuit board 10 acquires the real-time data collected by the position detection module 13 to obtain the rotation angle of the end rotating body 121 based on the real-time data and controls the rotation and stop of the motor 11 shaft based on the rotation angle. By detecting the rotation angle of the end rotating body 121 in real time by the position detection module 13, the control circuit board 10 can control the rotation and stop of the motor 11 based on the real-time rotation angle of the end rotating body 121, thereby achieving high-precision control of the position of the rotating body 21 of the valve body 2. This allows for precise adjustment of the flow rate in different channels to achieve precise proportional distribution of fluid in different channels.

[0041] Figure 15 A specific embodiment of the control system for actuator 1 is provided. In this embodiment, the control circuit board 10 includes an MCU 101, a power supply module, a motor drive module 102, a communication module 103, a current acquisition module 104, etc. The power supply module processes the input power and supplies power to the MCU 101, motor 11, and position detection module 13. In addition, the input power directly supplies power to the communication module 103. When the MCU 101 receives instructions such as opening requirements from an external control device (e.g., a car control terminal) through the communication module 103, the MCU 101 outputs an enable signal to the motor drive module 102. The motor drive module 102 drives the motor 11 to rotate, and drives the rotating body 21 to rotate through the transmission component 12, thereby realizing the switching of flow channels or the adjustment of the flow rate of different flow channels. During operation, the MCU 101 controls the position detection module 13 to perform real-time detection of the rotation angle of the rotating body 21. Combined with the real-time detection of the motor 11 current, high-precision control of the position of the rotating body 21 can be achieved. In addition, the real-time angle and system status of the rotating body 21 can be transmitted back to the external control device through the communication module 103 to achieve closed-loop control.

[0042] Specifically, the power supply module includes a power processing module 105 and an LDO 106 (low dropout linear regulator). The power processing module 105 processes the input power and then directly supplies it to the MCU 101 and the motor 11. The voltage output by the power processing module 105 is processed by the LDO 106 and then supplies power to the position detection module 13.

[0043] Specifically, the communication module 103 is a LIN bus module.

[0044] Please combine Figure 13In one embodiment, the position detection module 13 includes a potentiometer 13a. The potentiometer 13a includes a potentiometer body 131 and a rotating shaft 132 that are electrically connected to the control circuit board 10. The rotating shaft 132 is coaxially connected to the end rotating body 121 and is circumferentially fixed. When the end rotating body 121 drives the rotating shaft 132 to rotate, the potentiometer body 131 outputs different resistance values ​​to the control circuit board 10 in real time. The control circuit board 10 obtains the rotation angle of the end rotating body 121 based on the resistance value.

[0045] In this embodiment, specifically, the rotating shaft 132 has a shaft hole 1321, and the end rotating body 121 has a rotating shaft portion 1211, which is circumferentially fixedly installed in the shaft hole 1321.

[0046] To achieve circumferential fixation of the rotating shaft 1211 and the shaft hole 1321, the rotating shaft 1211 and the shaft hole 1321 can be configured as a matching D-shape. Of course, it is not limited to this.

[0047] More specifically, the potentiometer body 131 is mounted on the control circuit board 10, and the control circuit board 10 has a through hole 107 to avoid the rotating shaft portion 1211.

[0048] Please combine Figure 14 In one embodiment, the position detection module 13 includes a magnetic ring 134 and at least two TMR chips 135. The magnetic ring 134 is coaxially connected to the end rotating body 121 and circumferentially fixed. Each TMR chip 135 is electrically connected to the control circuit board 10 and is circumferentially distributed around the magnetic ring 134. When the end rotating body 121 drives the magnetic ring 134 to rotate, each TMR chip 135 detects changes in the surrounding magnetic field and outputs a corresponding voltage value in real time. The control circuit board 10 obtains the rotation angle of the end rotating body 121 based on the voltage value. Since the detection scheme of the TMR chip 132 and the magnetic ring 134 is a non-contact scheme, it can reduce the angle deviation caused by wear of the transmission component 12, wear of the rotating body 21, mechanical wear of the potentiometer, and mechanical installation gaps. The accuracy is less than or equal to 1°. Furthermore, the installation and rotation of the magnetic ring 134 are not limited to the installation angle, and no mechanical error-proofing design is required. It can be installed arbitrarily, improving assembly efficiency.

[0049] In this embodiment, specifically, the end rotating body 121 and the magnetic ring 134 can be fixed together by injection molding or snap-fitting.

[0050] In this embodiment, specifically, the end rotating body 121 has a rotating shaft 1211, and the magnetic ring 134 is fixedly connected to the rotating shaft 1211.

[0051] More specifically, each TMR chip 135 is mounted on the control circuit board 10, which has through holes 107 to avoid the rotating shaft portion 1211.

[0052] In some embodiments, actuator 1 includes connector 14, which is electrically connected to control circuit board 10. Control circuit board 10 is electrically connected to an external control device via connector 14 for information exchange. Typically, connector 14 is first plugged into connector 14 on an external signal harness, and then connected to the external control device via the external signal harness.

[0053] In some embodiments, the actuator 1 includes an actuator housing 15, and the main components of the actuator 1, including a control circuit board 10, a motor 11, a transmission assembly 12, etc., are disposed inside the actuator housing 15.

[0054] Specifically, the end rotating body 121 is partially exposed outside the actuator housing 15 to connect with the rotating body 21 of the valve body 2 during the assembly of the actuator 1 and the valve body 2.

[0055] Specifically, the actuator housing 15 includes an upper actuator housing 16 and a lower actuator housing 17 assembled together.

[0056] More specifically, the upper actuator housing 16 and the lower actuator housing 17 are fixedly connected together by a number of screws A1.

[0057] In different embodiments, the connector 14 may be located on the side wall of the upper actuator housing 16 or on the side wall of the lower actuator housing 17. The end effector 121 is exposed outward from the bottom of the lower actuator housing 17.

[0058] In some embodiments, actuator 1 includes actuator housing 15, with control circuit board 10, motor 11, and transmission assembly 12 disposed within actuator housing 15, and the output end of transmission assembly 12 exposed outward from a position within actuator housing 15; valve body 2 includes valve body housing 22, with rotating body 21 disposed within valve body housing 22 and exposed outward from a position within valve body housing 22; actuator housing 15 and valve body housing 22 are detachably and fixedly connected together to achieve a detachable and fixed connection between actuator 1 and valve body 2. When actuator housing 15 and valve body housing 22 are assembled together, the output end of transmission assembly 12 and rotating body 21 are connected. Since actuator 1 and valve body 2 each include actuator housing 15 and valve body housing 22 respectively, modularity of actuator 1 and valve body 2 is achieved. Furthermore, since actuator housing 15 and valve body housing 22 are detachably and sealedly fixedly connected, actuator 1 and valve body 2 can be disassembled, allowing for the replacement of different valve bodies 2 with actuator 1 for use.

[0059] Specifically, the actuator housing 15 and the valve body housing 22 are detachably fixed together by screw A2. This connection method using screw A2 facilitates the connection and disassembly of the actuator housing 15 and the valve body housing 22.

[0060] In the embodiments shown in the accompanying drawings, the actuator housing 15 includes an upper actuator housing 16 and an upper actuator housing 17. Multiple locations on the upper actuator housing 17 or the upper actuator housing 16 are provided with screw mounting portions B1 protruding outwards. The valve body housing 22 includes a lower valve body housing 23 and a upper valve body cover 24. The outer periphery of the upper valve body cover 24 is provided with a screw hole portion B2 protruding upwards. The screw A2 passes through the screw mounting portion B1 and is threaded into the screw hole portion B2.

[0061] Specifically, the transmission assembly 12 includes a final stage gear 121, with a column 1212 protruding from the middle of the lower end of the final stage gear 121. The column 1212 is exposed outward from a position of the actuator housing 15. The upper end of the rotating body 21 is provided with a mounting shaft 211, which is exposed outward from a position of the valve body housing 22. The middle of the final stage gear 121 is provided with a mounting hole that penetrates downward through the column. The mounting shaft 211 is detachably inserted into the mounting hole and circumferentially fixed with the mounting hole.

[0062] Since the valve body housing 22 needs to have an opening to allow the rotating body 21 (specifically the mounting shaft 211) to be exposed outward, in order to ensure the sealing of the valve body housing 22 at the corresponding position, a sealing ring C1 can be provided on the valve body housing 22 accordingly.

[0063] Since the actuator housing 15 needs to have an opening to expose the output end (specifically the column) of the transmission assembly 12, a sealing ring C2 can also be provided in the corresponding position of the actuator housing 15.

[0064] Please combine Figures 1 to 3 as well as Figures 7 to 9 In some embodiments, the transmission assembly 12 includes an end rotating body 121; the valve body 2 includes a valve body housing 22, the side wall of which is provided with a plurality of flow channels communicating with its internal space 231 respectively; the rotating body 21 is a valve core 21a, the valve core 21a includes a valve core body 212 and a mounting shaft portion 211 extending outward from the middle of one end of the valve core body 212; the valve core body 212 is rotatably adapted to be installed in the internal space 231 of the valve body housing 22; the mounting shaft portion 211 extends out of the valve body housing 22 and is coaxial with and circumferentially fixedly connected to the end rotating body 121; under the drive of the motor 11 and the transmission assembly 12, the rotation of the valve core body 212 can switch the flow channels or adjust the effective flow area of ​​different flow channels of the valve body 2.

[0065] Specifically, valve core 21a can be a ball valve core, etc.

[0066] Please combine Figures 1 to 3In this embodiment, the valve body 2 is a three-way valve body. Three holes are opened at three locations on the side wall of the valve body housing 22, and three connectors 25 are connected to form a first flow channel L1, a second flow channel L2, and a third flow channel L3, respectively. Rotation of the valve core body 212 can switch the second flow channel L2 or the third flow channel L3 to communicate with the first flow channel L1, and adjust the effective flow area of ​​the second flow channel L2 and the third flow channel L3.

[0067] To ensure a good seal, when each connector 25 is installed on the valve body housing 22, a sealing ring C3 is used for sealing.

[0068] In this embodiment, when the second flow channel L2 and the third flow channel L3 are liquid inlet channels and the first flow channel L1 is liquid outlet channel, the liquid inlet ratio of the second flow channel L2 and the third flow channel L3 can be allocated as needed.

[0069] Of course, the first flow channel L1 can also be the inlet flow channel, and the second flow channel L2 and the third flow channel L3 can be the outlet flow channels. Similarly, the flow rate of the liquid flowing out from the second flow channel L2 and the third flow channel L3 can be adjusted.

[0070] In this embodiment, the valve body housing 22 includes a lower shell 23 and an upper cover 24. The lower shell 23 and the upper cover 24 can be fixedly connected by screws A3, laser welding, or a combination of screws A3 and laser welding, etc. Each connector 25 is connected to the lower shell 23, and the mounting shaft 211 of the valve core 21a protrudes from the upper cover 24.

[0071] To ensure a proper seal between the lower shell 23 and the upper cover 24, a sealing ring C4 is provided at the connection between the lower shell 23 and the upper cover 24.

[0072] Please combine Figures 7 to 9 In this embodiment, the valve body 2 is a four-way valve body. Four holes are opened at four locations on the side wall of the valve body housing 22, and four connectors 25 are connected to form a first flow channel L1, a second flow channel L2, a third flow channel L3, and a fourth flow channel L4, respectively. Rotation of the valve core body 212 allows flow through the first flow channel L1 and the second flow channel L2, and communication between the third flow channel L3 and the fourth flow channel L4, or flow through the first flow channel L1 and the fourth flow channel L4, and communication between the second flow channel L2 and the third flow channel L3. Furthermore, rotation of the valve core body 212 allows for adjustment of the flow rate in each flow channel.

[0073] To ensure a good seal, when each connector 25 is installed on the valve body housing 22, a sealing ring C3 is used for sealing.

[0074] In this embodiment, the valve body housing 22 includes a lower shell 23 and an upper cover 24. The lower shell 23 and the upper cover 24 can be fixedly connected by screws, laser welding, or a combination of screw connection and laser welding, etc. Each connector 25 is connected to the lower shell 23, and the mounting shaft 211 of the valve core 21a protrudes from the upper cover 24.

[0075] To ensure a good seal between the lower shell 23 and the upper cover 24, a sealing ring is provided at the connection between the lower shell 23 and the upper cover 24.

[0076] In this embodiment, the valve body 2 also includes a base 26 disposed on the lower side of the valve body housing 22 and fixedly connected to the valve body housing 22. The base 26 facilitates the installation of the multi-way valve.

[0077] Please combine Figures 4 to 6 In one embodiment, the transmission assembly 12 includes an end rotating body 121; the valve body 2 includes a valve body housing 22, a fixed plate 27, a movable plate 28, a rotating bracket 21b serving as the rotating body 21, and a spring 29. The side wall of the valve body housing 22 is provided with multiple flow channels communicating with its internal space 231. The fixed plate 27, the movable plate 28, and the rotating bracket 21b are arranged sequentially from bottom to top in the internal space 231. The rotating bracket 21b is fixedly connected to the movable plate 28. The spring 29 is sleeved on the rotating bracket 21b and abuts against the top wall of the valve body housing 22 and the bottom of the rotating bracket 21b. The top of the rotating bracket 21b has a mounting shaft portion 211, which extends from the valve body housing 22 and is coaxial with and circumferentially fixedly connected to the end rotating body 121. Driven by the motor 11 and the transmission assembly 12, the rotation of the rotating bracket 21b drives the movable plate 28 to rotate. The rotation of the movable plate 28 can switch the flow channels and adjust the effective flow area of ​​different flow channels of the valve body 2.

[0078] Specifically, both the moving plate 28 and the fixed plate 27 are ceramic plates, and the valve body 2 is a conventional ceramic core valve body. More specifically, a ceramic sealing gasket 30 is also provided on the lower side of the fixed plate 27.

[0079] Specifically, in this embodiment, valve body 2 is a three-way valve body.

[0080] More specifically, a connecting end face 221 is formed on one side of the valve body housing 22. A first flow channel L1, a second flow channel L2, and a third flow channel L3 are provided on the valve body housing 22. All three flow channels pass through the connecting end face 221. The second flow channel L2 and the third flow channel L3 are arranged side-by-side, and the first flow channel L1 is located above or below the second flow channel L2 and the third flow channel L3. Rotation of the movable plate 28 can switch the connection between the second flow channel L2 or the third flow channel L3 and the first flow channel L1, and adjust the effective flow area of ​​the second flow channel L2 and the third flow channel L3.

[0081] The second flow channel L2 and the third flow channel L3 can be liquid inlet channels, and correspondingly, the first flow channel L1 is the liquid outlet channel. At this time, the liquid inlet ratio of the second flow channel L2 and the third flow channel L3 can be allocated as needed.

[0082] Of course, the first flow channel L1 can also be the inlet flow channel, and the second flow channel L2 and the third flow channel L3 can be the outlet flow channels. Similarly, the flow rate of the liquid flowing out from the second flow channel L2 and the third flow channel L3 can be adjusted.

[0083] Furthermore, the connecting end face 221 is recessed at the three flow channel positions and fitted with sealing gaskets 31, so that a sealing effect can be guaranteed when connected to the end face of the external pipeline.

[0084] Furthermore, the valve body housing 22 includes a lower shell 23 and an upper cover 24. The lower shell 23 and the upper cover 24 can be fixedly connected by screws A3, laser welding, or a combination of screws A3 and laser welding, etc. Various flow channels are formed in the lower shell 23, and the mounting shaft 211 of the rotating bracket 21b protrudes from the upper cover 24.

[0085] To ensure a proper seal between the lower shell 23 and the upper cover 24, a sealing ring C4 is provided at the connection between the lower shell 23 and the upper cover 24.

[0086] Please combine Figures 10 to 12 In one embodiment, the transmission assembly 12 includes an end rotating body 121; the valve body 2 includes a valve body housing 22, at least two valve cores 33, a rotating bracket 21b, and at least two gears 34. The side wall of the valve body housing 22 is provided with multiple flow channels communicating with its internal space 231. At least two valve cores 33 are disposed in the internal space 231 of the valve body housing 22. The upper middle part of each valve core 33 is respectively provided with a first mounting shaft portion 331. The first mounting shaft portion 331 is respectively circumferentially fixedly sleeved with a corresponding gear 34. The bottom of the rotating bracket 21b is provided with a gear part 215, and the top of the rotating bracket 21b is provided with a second mounting shaft part 211. The gear part 215 meshes with each gear 34. The second mounting shaft part 211 extends out from the valve body housing 22 and is coaxial with and circumferentially fixedly connected to the end rotating body 121. Driven by the motor 11 and the transmission assembly 12, the rotation of the rotating bracket 21b drives each gear 34 and each valve core 33 to rotate. The rotation of each valve core 33 can switch the flow channel and adjust the effective flow area of ​​different flow channels of the valve body 2.

[0087] Specifically, both valve cores 33 are column valve cores.

[0088] Specifically, in this embodiment, valve body 2 is a four-way valve body.

[0089] More specifically, four holes are opened at four locations on the side wall of the valve body housing 22 and connected to four connectors 25 to form a first flow channel L1, a second flow channel L2, a third flow channel L3, and a fourth flow channel L4, respectively. The rotating bracket 21b can switch the flow channels in various ways and adjust the effective flow area of ​​the flow channels.

[0090] To ensure a good seal, each connector 25 is fitted with a sealing ring when installed on the valve body housing 22.

[0091] in, Figure 12 Examples of partial flow channel switching and adjustment of the effective flow area are given.

[0092] Specifically, the valve body housing 22 includes a lower shell 23 and an upper cover 24. The lower shell 23 and the upper cover 24 can be fixedly connected by screws A3, laser welding, or a combination of screws A3 and laser welding, etc. Each flow channel is located in the lower shell 23, and the second mounting shaft 211 of the rotating bracket 21b extends out from the upper cover 24.

[0093] It should be noted that the multi-way valve in the attached diagram is merely an example. Valve body 2 can also be various other types of valve bodies, such as different types of three-way valves, four-way valves, or even five-way valves, six-way valves, and so on.

[0094] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the scope of this application shall still fall within the scope of this application.

Claims

1. An electronic multi-way valve, characterized in that, include: An actuator and a valve body are included. The actuator includes a control circuit board, a motor, and a transmission assembly. The control circuit board is configured to communicate with an external control device. The motor is electrically connected to the control circuit board to rotate under its control. The transmission assembly is connected to the motor's shaft. The valve body is fixedly connected to the actuator. The valve body includes a rotating body connected to the output end of the transmission assembly. When the motor's shaft rotates, the transmission assembly drives the rotating body to rotate, switching the flow channels of the valve body and adjusting the effective flow area of ​​different flow channels of the valve body. The transmission assembly includes an end-rotating body, which is coaxial with and circumferentially fixedly connected to the rotating body. The actuator also includes a position detection module, which is used to detect the rotation angle of the end-rotating body. The position detection module is electrically connected to the control circuit board. The control circuit board acquires real-time data from the position detection module to obtain the rotation angle of the end-rotating body based on the real-time data and controls the rotation and stopping of the motor shaft based on the rotation angle.

2. The electronic multi-way valve as described in claim 1, characterized in that, The position detection module includes a potentiometer, which includes a potentiometer body and a rotating shaft electrically connected to the control circuit board. The rotating shaft is coaxially connected to the end rotating body and is circumferentially fixed. When the end rotating body drives the rotating shaft to rotate, the potentiometer body outputs different resistance values ​​to the control circuit board in real time. The control circuit board obtains the rotation angle of the end rotating body based on the resistance value.

3. The electronic multi-way valve as described in claim 2, characterized in that, The potentiometer body is mounted on the control circuit board, the rotating shaft has a shaft hole, the end rotating body has a rotating shaft portion, the rotating shaft portion is circumferentially fixedly mounted on the shaft hole, and the control circuit board has a through hole to avoid the rotating shaft portion.

4. The electronic multi-way valve as described in claim 1, characterized in that, The position detection module includes a magnetic ring and at least two TMR chips. The magnetic ring is coaxially connected to the end rotating body and is circumferentially fixed. Each TMR chip is electrically connected to the control circuit board and is distributed around the magnetic ring. When the end rotating body drives the magnetic ring to rotate, each TMR chip detects the change in the surrounding magnetic field and outputs the corresponding voltage value in real time. The control circuit board obtains the rotation angle of the end rotating body based on the voltage value.

5. The electronic multi-way valve as described in claim 4, characterized in that, Each of the TMR chips is mounted on the control circuit board. The end rotating body has a rotating shaft. The magnetic ring is fixedly connected to the rotating shaft. The control circuit board has a through hole to avoid the rotating shaft.

6. The electronic multi-way valve as described in claim 1, characterized in that, The actuator includes an actuator housing, and the control circuit board, the motor, and the transmission assembly are disposed within the actuator housing. The output end of the transmission assembly is exposed outward from a position within the actuator housing. The valve body includes a valve body housing, and the rotating body is disposed within the valve body housing and exposed outward from a position within the valve body housing. The actuator housing and the valve body housing are detachably and fixedly connected together to achieve a detachable and fixed connection between the actuator and the valve body. When the actuator housing and the valve body housing are assembled together, the output end of the transmission assembly is connected to the rotating body.

7. The electronic multi-way valve as described in claim 1, characterized in that, The transmission assembly includes a worm, a worm gear, a first gear, a second gear, a final stage gear, a first gear positioning post, and a second gear positioning post. Each of the worm gear, the first gear, and the second gear includes a coaxial driving gear and a driven gear, with the radial dimension of each driving gear being larger than the radial dimension of its corresponding driven gear. The worm is mounted on the motor shaft, and the worm gear is mounted on the first gear positioning post, with the worm meshing with the driving gear of the worm gear. The first gear is mounted on the second gear positioning post, and its driving gear meshes with the driven gear of the worm gear. The second gear is mounted on the first gear positioning post, superimposed on the worm gear, with its driving gear meshing with the driven gear of the first gear, and the driven gear meshing with the final stage gear, which serves as the end-rotating element.

8. The electronic multi-way valve according to any one of claims 1 to 7, characterized in that, The valve body includes a valve body housing, the side wall of which is provided with multiple flow channels communicating with its internal space. The rotating body is a valve core, which includes a valve core body and a mounting shaft extending outward from the middle of one end of the valve core body. The valve core body is rotatably adapted to be installed in the internal space of the valve body housing. The mounting shaft extends from the valve body housing and is coaxial with and circumferentially fixedly connected to the end rotating body. Driven by the motor and the transmission assembly, the rotation of the valve core body can switch the flow channels or adjust the effective flow area of ​​different flow channels of the valve body.

9. The electronic multi-way valve according to any one of claims 1 to 7, characterized in that, The valve body includes a valve body housing, a fixed plate, a movable plate, a rotating bracket serving as the rotating body, and a spring. The side wall of the valve body housing has multiple flow channels communicating with its internal space. The fixed plate, the movable plate, and the rotating bracket are arranged sequentially from bottom to top in the internal space. The rotating bracket is fixedly connected to the movable plate. The spring is sleeved on the rotating bracket and abuts against the top wall of the valve body housing and the bottom of the rotating bracket. The top of the rotating bracket has a mounting shaft portion, which extends from the valve body housing and is coaxially and circumferentially fixedly connected to the end rotating body. Driven by the motor and the transmission assembly, the rotation of the rotating bracket drives the movable plate to rotate. The rotation of the movable plate can switch flow channels and adjust the effective flow area of ​​different flow channels of the valve body.

10. The electronic multi-way valve according to any one of claims 1 to 7, characterized in that, The valve body includes a valve body housing, at least two valve cores, a rotating bracket, and at least two gears. The side wall of the valve body housing has multiple flow channels communicating with its internal space. The at least two valve cores are disposed in the internal space of the valve body housing. Each valve core has a first mounting shaft protruding from its upper middle portion. The first mounting shaft is circumferentially fixedly sleeved with the corresponding gear. The bottom of the rotating bracket has a gear portion, and the top of the rotating bracket has a second mounting shaft portion. The gear portion meshes with each of the gears. The second mounting shaft portion extends from the valve body housing and is coaxially and circumferentially fixedly connected to the end rotating body. Driven by the motor and the transmission assembly, the rotation of the rotating bracket drives the gears and valve cores to rotate. The rotation of each valve core can switch flow channels and adjust the effective flow area of ​​different flow channels of the valve body.

Images