Valve body driver and multi-way valve

Abstract

The utility model discloses a valve body driver and a multi-way valve, and relates to the technical field of multi-way valves. The circuit board is connected with the driving motor; the magnetic ring is fixedly connected with the motor shaft; and the inductor is arranged on the circuit board, and the inductor is used for acquiring the rotation angle of the magnetic ring. The inductor corresponding to the magnetic ring is arranged on the circuit board, the inductor can induct a rotation signal of the magnetic ring, the rotation position of the gear is monitored, rotation of the driving motor is accurately controlled, and control over rotation of the valve element is achieved.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a valve body driver and a multi-way valve. Background Art

[0002] With the development of industrial technology, the complexity of temperature control systems is also increasing. For example, in vehicles, the engine, motor and battery all need to be cooled, and the car also needs heating in winter. In thermal management systems such as cooling system flow paths and air conditioning system flow paths, multi-way valves are important components for switching flow paths.

[0003] However, in the prior art, the valve body driver does not accurately measure the rotation speed of the driving motor, so that the rotation speed of the driving motor is not accurately controlled, making it difficult to control the rotation of the valve core. Utility Model Content

[0004] The present application provides a valve body driver and a multi-way valve. A sensor corresponding to a magnetic ring is provided on a circuit board. The sensor can sense the rotation signal of the magnetic ring, monitor the rotation position of the gear, accurately control the rotation of the drive motor, and realize the control of the rotation of the valve core.

[0005] In a first aspect, the present application provides a valve body driver, the valve body driver comprising:

[0006] A drive motor having a motor shaft;

[0007] A circuit board connected to the driving motor;

[0008] A magnetic ring, fixedly connected to the motor shaft;

[0009] A sensor is arranged on the circuit board, and the sensor is used to obtain the rotation angle of the magnetic ring.

[0010] A sensor corresponding to the magnetic ring is provided on the circuit board, and the sensor can sense the rotation signal of the magnetic ring. At the same time, the sensor can feed back the rotation signal of the magnetic ring to the controller on the circuit board. The circuit board can monitor the rotation position of the gear according to the signal fed back by the magnetic ring, accurately control the rotation of the drive motor, and realize the control of the rotation of the valve core. For example, when the valve core needs to rotate a certain angle, the circuit board controls the drive motor to start, the motor shaft rotates, and drives the magnetic ring and the gear set to rotate together. Through the multi-stage gear transmission structure, the drive motor finally drives the valve core inside the valve body to rotate. During the rotation process, the sensor on the circuit board can sense the rotation signal of the magnetic ring, and the rotation signal of the magnetic ring is fed back to the circuit board until the valve core rotates to the set position. The circuit board controls the drive motor to stop working, and the valve core stops rotating and stays at the set position.

[0011] In a possible implementation, the valve body driver includes a gear structure, the gear structure includes a plurality of gear sets connected in sequence, wherein at least two of the gear sets that are partially connected are partially stacked in the axial direction, the projection of one of the two gear sets in the axial direction coincides with the projection of the other in the axial direction, the input end gear set of the gear structure is connected to the motor shaft, and the output end gear set of the gear structure is used to connect to the valve core of the valve body to drive the valve core to rotate. The gear structure is stacked along the axial part, which can save space in the horizontal direction, that is, the Y direction. The space in the horizontal direction can be used to set components such as a drive motor and a circuit board, so that the motor body and the gear set form a stacked state, thereby improving the utilization efficiency of the space.

[0012] In a possible implementation, the gear set includes a driving gear and a driven gear meshing with each other, and the diameter of the driving gear in the same gear set is smaller than the diameter of the driven gear. Through the transmission of multiple gear sets, the valve body driver can output a larger torque to drive the valve core of the valve body to rotate, thereby changing the flow state of the medium inside the multi-way valve.

[0013] In a possible implementation, in the two connected gear sets, the driving gear of one gear set and the driven gear of the other gear set are coaxial and fixedly connected. The two gear sets transmit power through the coaxial and fixedly connected driving gear and driven gear.

[0014] In a possible implementation, the axial directions of the plurality of sequentially connected gear sets are parallel to each other to achieve overall rotation of the gear structure.

[0015] In one possible implementation, the drive motor includes an integrated drive motor, and the stator and rotor of the integrated drive motor are an integrated structure. The present application adopts an integrated motor drive, and the integrated motor can be used as a universal part with low processing cost, and the rotor and stator do not need additional assembly, which can save installation costs.

[0016] In a possible implementation, a controller is provided on the circuit board, and the controller is used to control the rotation of the drive motor.

[0017] In a possible implementation, the valve body driver further includes a box body and a box cover, the box body and the box cover are fixedly connected, the drive motor and the gear set are located in the box body, a first sealing ring is provided between the box body and the box cover, and the first sealing ring seals and connects the box body and the box cover. The box body and the box cover can provide protection for the valve body driver, preventing impurities in the environment from entering the interior of the valve body driver and affecting the operation of the valve body driver.

[0018] In some possible implementations, the first sealing ring is made of soft rubber material, the box body and the box cover are fixedly connected by ultrasonic welding, the gear set and the drive assembly are encapsulated in the box body and the box cover, and a double sealing effect of soft rubber sealing and ultrasonic welding is adopted, and the sealing effect is reliable.

[0019] In a possible implementation, a second sealing ring is provided between the housing and the output gear, and the second sealing ring seals and connects the housing and the output gear. The second sealing ring seals and connects the housing and the output gear to avoid leakage at the connection between the housing and the output gear.

[0020] In a second aspect, the present application provides a multi-way valve, the multi-way valve includes a valve core, a transmission block is provided on the output gear in the valve body driver, and the transmission block is fixedly connected to the valve core. The transmission block can be rotatably connected to the valve core inside the multi-way valve, and when the transmission block rotates, the valve core of the multi-way valve is driven to rotate, and the channel switching inside the multi-way valve is realized by the rotation of the valve core of the multi-way valve.

[0021] In a possible implementation, the transmission block is provided with a first protrusion, the valve core is provided with a slot, the first protrusion is accommodated in the slot and fixedly connected to the inner wall of the slot. Through the cooperation between the first protrusion and the slot, the valve core can be driven to rotate when the transmission block rotates, thereby realizing the channel switching function inside the multi-way valve and changing the flow direction of the medium inside the multi-way valve.

[0022] In a possible implementation, the transmission block is provided with a second protrusion, and the valve body driver further includes a limit block, which is used to abut against the second protrusion to limit the rotation of the second protrusion. When the transmission block rotates to a set position, it is blocked by the limit block and cannot continue to rotate. The limit block limits the rotation of the second protrusion on the transmission block to limit the forward rotation position or reverse rotation position of the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an exploded diagram of the valve body driver structure provided in the embodiment of the present application;

[0024] Figure 2 is a cross-sectional view of a valve body driver provided in an embodiment of the present application;

[0025] Figure 3 is a schematic diagram of the gear structure in the valve body driver provided in an embodiment of the present application;

[0026] Figure 4 is a schematic diagram of a transmission block provided in an embodiment of the present application;

[0027] Figure 5 It is a schematic diagram of a limit block provided in an embodiment of the present application;

[0028] Figure 6It is a schematic diagram of the connection between the box body and the box cover provided in the embodiment of the present application;

[0029] Figure 7 It is an exploded view of the valve body driver and multi-way valve structure provided in the implementation manner of the present application. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0031] For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of the present application are explained and described below.

[0032] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0034] It should be understood that the term "and / or" used in this article is only a description of the same field of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0035] It should be understood that the terms “first”, “second”, etc. used in the present application are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.

[0036] In the description of the present application, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection or an integrated connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0038] Multi-way valves are commonly used parts in industrial production. They can switch between multiple channels in a valve body and are widely used in many fields of industrial production. The working principle of a multi-way valve is to connect different flow channels in the multi-way valve by rotating the valve core, and switch the circulating medium in the multi-way valve.

[0039] In order to drive the valve core of the multi-way valve to rotate, a larger driving motor is usually used in the prior art to output sufficient torque. The driving motor is relatively large in size, and the stator and rotor are designed as a split type. When in use, the stator and rotor need to be installed, and the driving motor needs to be installed in a specific installation position to achieve the driving of the valve core of the multi-way valve. This split driving motor needs to be designed according to different valve body shapes and requires a specific installation position. The processing and manufacturing cost is high, and the installation process is also relatively complicated.

[0040] The present application provides a valve body driver, referring to Figures 1 to 3 As shown, it includes a driving motor 100 and a gear structure 200. The driving motor 100 can be an integrated motor, the stator and the rotor of the integrated motor are packaged in an integrated manner, the stator and the rotor are an integrated structure, the stator and the rotor are not removable, and the integrated motor can be used by simply installing it in a suitable position, without installing the stator and the rotor. The gear structure 200 includes an input gear, an intermediate gear and an output gear that are meshed with each other, the input gear is connected to the motor shaft 110 of the driving motor 100, the intermediate gear can transmit the power of the output gear to the output gear, and the output gear can be connected to the valve core 810 to drive the valve core 810 to rotate.

[0041] In the embodiment of the present application, the driving motor 100 adopts an integrated motor, which has a low cost and a simple installation method of the integrated motor, which can save manufacturing cost and installation cost. The gear structure 200 may include a multi-stage gear transmission structure, each stage of the gear transmission structure includes a small gear and a large gear, the small gear is a driving gear, the large gear is a driven gear, the small gear meshes with the large gear and drives the large gear to rotate. Through the multi-stage reduction of the gear structure 200, the valve body driver can achieve a large torque output. Specifically, the motor shaft 110 and the first-stage small gear 211 of the driving motor 100 can be interference fitted, the motor shaft 110 drives the first-stage small gear 211 to rotate, the first-stage small gear 211 drives the first-stage large gear 212 to rotate, and through the meshing of the multi-stage gears, the output end gear of the gear structure 200 is finally driven to rotate. The output end gear of the gear structure 200 can drive the valve core 810 in the valve body to rotate through the transmission structure to realize the channel switching function inside the valve body structure.

[0042] Compared with the valve body driver with a separate rotor and stator design, the rotor and stator have high processing and manufacturing costs, and require complex operations during installation. The present application adopts an integrated motor drive. The integrated motor can be used as a universal part with low processing cost. The rotor and stator do not require additional assembly, which can save installation costs. In the present application, the transmission structure in the valve body driver adopts a multi-stage reduction transmission gear set, which can output a large torque to drive the valve core 810 in the valve body to rotate, change the flow channel of the medium in the multi-way valve, and the effect is highly reliable.

[0043] In some possible implementations, see Figure 3 As shown, the gear structure 200 in the embodiment of the present application includes a first-stage gear set, a second-stage gear set, a third-stage gear set and a fourth-stage gear set connected in sequence. The first-stage gear set includes a first-stage pinion 211 and a first-stage large gear 212 meshing with each other, the second-stage gear set includes a second-stage pinion 221 and a second-stage large gear 222 meshing with each other, the third-stage gear set includes a third-stage pinion 231 and a third-stage large gear 232 meshing with each other, and the fourth-stage gear set includes a fourth-stage pinion 241 and a fourth-stage large gear 242 meshing with each other.

[0044] In each stage of the gear set, the pinion is the driving gear and the large gear is the driven gear. The pinion and the large gear mesh and drive the large gear to rotate, which can reduce the rotation speed and increase the torque. The first stage pinion 211 and the motor shaft 110 of the drive motor 100 are interference fitted. When the drive motor 100 is working, the motor shaft 110 drives the first stage pinion 211 to rotate, the first stage pinion 211 meshes with the first stage large gear 212 and drives the first stage large gear 212 to rotate, and the rotation of the first stage large gear 212 is transmitted to the second stage pinion 221 through the first gear shaft 251, and the second stage pinion 221 meshes with the second stage large gear 222 and drives the second stage large gear 222 to rotate. The rotation of the second stage large gear 222 The power is transmitted to the third-stage small gear 231 through the second gear shaft 252, the third-stage small gear 231 meshes with the third-stage large gear 232 and drives the third-stage large gear 232 to rotate, the rotation of the third-stage large gear 232 is transmitted to the fourth-stage small gear 241 through the third gear shaft 253, the fourth-stage small gear 241 meshes with the fourth-stage large gear 242 and drives the fourth-stage large gear 242 to rotate, the rotation of the fourth-stage large gear 242 is transmitted to the valve core 810 of the valve body, drives the valve core 810 to rotate, and changes the flow channel inside the valve body.

[0045] Through the four-stage gear transmission structure, the driving motor 100 can drive the fourth-stage large gear 242 to rotate, thereby achieving a larger torque output. The fourth-stage large gear 242 can be provided with a transmission structure, such as a transmission block 700, and one end of the transmission block 700 can be fixedly connected to the end face of the fourth-stage large gear 242. When the fourth-stage large gear 242 rotates, the transmission block 700 is driven to rotate together, and the other end of the transmission block 700 can be fixedly connected to the valve core 810 in the valve body assembly. When the transmission block 700 rotates, the valve core 810 is driven to rotate, thereby achieving channel switching inside the valve body assembly.

[0046] In some possible implementations, the first direction is parallel to the direction of the gear axis in the gear structure 200. Figure 3 In the embodiment, the first direction is parallel to the direction of the Z axis. Along the first direction, the first-stage gear set, the second-stage gear set, the third-stage gear set and the fourth-stage gear set are stacked in sequence.

[0047] In this embodiment, the first-stage pinion 211 meshes with the first-stage large gear 212, and a second-stage pinion 221 is provided on the Z-opposite side of the first-stage large gear 212. The second-stage pinion 221 and the first-stage large gear 212 are respectively fixedly connected to the first gear shaft 251, and when the first-stage large gear 212 rotates, the first gear shaft 251 is driven to rotate. The second-stage pinion 221 fixed on the first gear shaft 251 rotates with the first gear shaft.

[0048] The second-stage small gear 221 meshes with the second-stage large gear 222. A third-stage small gear 231 is provided on the Z-opposite side of the second-stage large gear 222. The third-stage small gear 231 and the second-stage large gear 222 are respectively fixedly connected to the second gear shaft 252. When the second-stage large gear 222 rotates, the second gear shaft is driven to rotate. The third-stage small gear 231 fixed on the second gear shaft rotates with the second gear shaft.

[0049] The third-stage pinion 231 meshes with the third-stage large gear 232. A fourth-stage pinion 241 is provided on the Z-opposite side of the third-stage large gear 232. The fourth-stage pinion 241 and the third-stage large gear 232 are respectively fixedly connected to the third gear shaft. When the third-stage large gear 232 rotates, the third gear shaft is driven to rotate. The fourth-stage pinion 241 fixed on the third gear shaft rotates with the third gear shaft.

[0050] The fourth-stage small gear 241 is meshed with the fourth-stage large gear 242. When the fourth-stage small gear 241 rotates, it drives the fourth-stage large gear 242 to rotate. A transmission block 700 can be set on the fourth-stage large gear 242. When the fourth-stage large gear 242 rotates, it drives the transmission block 700 to rotate together. When the transmission block 700 rotates, it drives the valve core 810 to rotate, so as to realize the channel switching inside the valve body assembly.

[0051] In the embodiment of the present application, the gear structure 200 is stacked along the first direction, which can save space in the horizontal direction, that is, the Y direction. The horizontal space can be used to set components such as the drive motor 100 and the circuit board 300, so that the motor body and the gear set are stacked, thereby improving the utilization efficiency of the space.

[0052] In some possible implementations, see Figures 1 to 3 As shown, the gear structure 200 includes a plurality of gear shafts. The first gear shaft 251 is inserted in the first-stage large gear 212 and the second-stage small gear 221. When the first gear shaft 251 rotates, the second-stage small gear 221 is driven to rotate. The second gear shaft 252 is inserted in the second-stage large gear 222 and the third-stage small gear 231. When the second gear shaft 252 rotates, the third-stage small gear 231 is driven to rotate. The third gear shaft 253 is inserted in the third-stage large gear 232 and the fourth-stage small gear 241. When the third gear shaft 253 rotates, the fourth-stage small gear 241 is driven to rotate. One end of the fourth gear shaft 254 can be inserted in the box cover 510, and the other end is inserted in the fourth-stage large gear 242. One end located in the fourth-stage large gear 242 can be rotatably fixed in the box body 500 of the valve body driver through a bearing.

[0053] In some possible implementations, see Figures 1 to 3As shown, the valve body driver in the embodiment of the present application further includes a circuit board 300, which is connected to the drive motor 100, and the circuit board 300 can control the rotation of the drive motor 100. Specifically, the circuit board 300 can be arranged at the shaft end of the drive motor 100, and the circuit board 300 is located between the drive motor 100 and the first-stage pinion 211. The circuit board 300 can be connected to the drive motor 100 through the drive connection pin 310 to control the rotation of the drive motor 100. The drive motor 100 and the circuit board 300 can be fixed in the housing 500 of the valve body driver by connecting screws. In the embodiment of the present application, the circuit board 300 can be arranged at the shaft end of the motor, between the drive motor 100 and the first-stage pinion 211, so that the motor main body and the gear set form a stacked state, which can make full use of the space saved by the stacked state of the gear structure 200, and improve the space utilization rate in the housing 500 of the valve body driver.

[0054] When the valve body needs to switch channels, the circuit board 300 can control the motor shaft 110 of the driving motor 100 to rotate, and the motor shaft 110 of the driving motor 100 drives the first-stage pinion 211 to rotate. The first-stage pinion 211 drives the first-stage large gear 212 to rotate, the first-stage pinion 211 meshes with the first-stage large gear 212 and drives the first-stage large gear 212 to rotate, the rotation of the first-stage large gear 212 is transmitted to the second-stage pinion 221 through the first gear shaft 251, the second-stage pinion 221 meshes with the second-stage large gear 222 and drives the second-stage large gear 222 to rotate, the rotation of the second-stage large gear 222 is transmitted to the third-stage pinion 231 through the second gear shaft 252, the third-stage pinion 231 meshes with the third-stage large gear 232 and drives the third-stage large gear 232 to rotate, the rotation of the third-stage large gear 232 is transmitted to the fourth-stage pinion 241 through the third gear shaft 253, the fourth-stage pinion 241 meshes with the fourth-stage large gear 242 and drives the fourth-stage large gear 242 to rotate, and a transmission block 700 can be provided on the fourth-stage large gear 242, and one end of the transmission block 700 can be fixedly connected to the end surface of the fourth-stage large gear 242. When the fourth-stage large gear 242 rotates, it drives the transmission block 700 to rotate together. The other end of the transmission block 700 can be fixedly connected to the valve core 810 in the valve body assembly. When the transmission block 700 rotates, it drives the valve core 810 to rotate, thereby realizing the channel switching function inside the valve body assembly.

[0055] In some possible implementations, see Figures 1 to 3As shown, the valve body driver in the embodiment of the present application further includes a magnetic ring 400, which is fixedly connected to the driving shaft of the driving motor 100, and a sensor is provided on the circuit board 300, which can sense the rotation signal of the magnetic ring 400. The magnetic ring 400 is located between the driving motor 100 and the first-stage pinion 211, and the magnetic ring 400 can be fixedly connected to the motor shaft 110 of the driving motor 100 by interference fit. The magnetic ring 400 and the motor shaft 110 of the driving motor 100 rotate synchronously, and the rotation state of the magnetic ring 400 can reflect the rotation state of the motor shaft 110.

[0056] A sensor corresponding to the magnetic ring 400 is provided on the circuit board 300, and the sensor can sense the rotation signal of the magnetic ring 400. At the same time, the sensor can feed back the rotation signal of the magnetic ring 400 to the controller on the circuit board 300. The circuit board 300 can monitor the rotation position of the gear according to the signal fed back by the magnetic ring 400, accurately control the rotation of the drive motor 100, and realize the control of the rotation of the valve core 810. For example, when the valve core needs to rotate a certain angle, the circuit board 300 controls the drive motor 100 to start, the motor shaft 110 rotates, and drives the magnetic ring 400 and the gear set to rotate together. Through the multi-stage gear transmission structure, the drive motor 100 finally drives the valve core 810 inside the valve body to rotate. During the rotation process, the sensor on the circuit board 300 can sense the rotation signal of the magnetic ring 400, and the rotation signal of the magnetic ring 400 is fed back to the circuit board 300 until the valve core 810 rotates to the set position, the circuit board 300 controls the drive motor 100 to stop working, and the valve core 810 stops rotating and stays at the set position.

[0057] In some possible implementations, see Figures 1 to 3 As shown, the valve body driver in the embodiment of the present application further includes a box body 500 and a box cover 510, the box body 500 and the box cover 510 are fixedly connected, the driving motor 100 and the gear set are located in the box body 500, and a first sealing ring 610 is provided between the box body 500 and the box cover 510, and the first sealing ring 610 can seal and connect the box body 500 and the box cover 510. The first sealing ring 610 is located between the box body 500 and the box cover 510, and the first sealing ring 610 is deformed by the squeezing force of the box body 500 and the box cover 510, filling the gap between the box body 500 and the box cover 510, thereby playing the role of sealing the box body 500 and the box cover 510. The box body 500 and the box cover 510 can provide protection for the valve body driver, preventing impurities in the environment from entering the interior of the valve body driver and affecting the operation of the valve body driver.

[0058] In one embodiment, the first sealing ring 610 can be made of soft rubber material, and the box body 500 and the box cover 510 are fixedly connected by ultrasonic welding. The gear set and the drive assembly are encapsulated in the box body and the box cover, and the double sealing effect of soft rubber sealing and ultrasonic welding is adopted, and the sealing effect is reliable.

[0059] See also Figure 2 and Figure 6 As shown, the box body 500 and the box cover 510 can be connected by ultrasonic fusion to generate an ultrasonic fusion zone, thereby sealing the box cover 510 and the box body 500. The ultrasonic fusion zone and the first sealing ring 610 can play a double sealing role, and the sealing effect is more reliable.

[0060] In some possible implementations, see Figures 1 to 3 As shown, a second sealing ring 620 is provided between the box body 500 and the fourth-stage large gear 242 in the embodiment of the present application, and the second sealing ring 620 seals and connects the box body 500 and the fourth-stage large gear 242. The second sealing ring 620 is located between the box body 500 and the fourth-stage large gear 242, and is deformed by the squeezing force of the box body 500 and the fourth-stage large gear 242, filling the gap between the box body 500 and the fourth-stage large gear 242, thereby playing the role of sealing the box body 500 and the fourth-stage large gear 242.

[0061] In some possible implementations, see Figure 7 As shown, the present application provides a multi-way valve, which includes the valve body driver in any of the above embodiments, and also includes a valve body 800 of the multi-way valve. The output end of the valve body driver and the valve core 810 in the valve body 800 are connected to the last-stage driven gear of the gear structure 200 in the valve body driver, and a transmission block 700 can be set. For example, a transmission block 700 is set at one end of the fourth-stage large gear 242. When the gear set in the valve body driver rotates, the transmission block 700 rotates with the output gear in the valve body driver. The transmission block 700 can be rotatably connected to the valve core 810 inside the multi-way valve. When the transmission block 700 rotates, the valve core 810 of the multi-way valve is driven to rotate, and the channel switching inside the multi-way valve is realized by rotating the valve core 810 of the multi-way valve.

[0062] In some possible implementations, see Figure 4 and Figure 7As shown, one side of the output end gear of the gear structure 200 in the embodiment of the present application is connected with an assembly groove 250, and the assembly groove 250 can be engaged with the transmission block 700. One end of the transmission block 700 is inserted into the assembly groove 250 and can rotate with the assembly groove 250. When the driving motor 100 is working, the motor shaft 110 drives the first-stage small gear 211 to rotate, and the first-stage small gear 211 drives the first-stage large gear 212 to rotate. The first-stage small gear 211 meshes with the first-stage large gear 212 and drives the first-stage large gear 212 to rotate. The rotation of the first-stage large gear 212 is transmitted to the second-stage small gear 221 through the first gear shaft 251. The second-stage small gear 221 meshes with the second-stage large gear 222 and drives the second-stage large gear 222 to rotate. The rotation of the third-stage pinion 22 is transmitted to the third-stage pinion 231 through the second gear shaft 252, the third-stage pinion 231 meshes with the third-stage large gear 232 and drives the third-stage large gear 232 to rotate, the rotation of the third-stage large gear 232 is transmitted to the fourth-stage pinion 241 through the third gear shaft 253, the fourth-stage pinion 241 meshes with the fourth-stage large gear 242 and drives the fourth-stage large gear 242 to rotate, and the assembly groove 250 on one side of the fourth-stage large gear 242 rotates together with the fourth-stage large gear 242. The assembly groove 250 and the transmission block 700 are connected and connected, and the friction between the side wall of the assembly groove 250 and the transmission block 700 drives the transmission block 700 to rotate together.

[0063] See also Figure 4 and Figure 7 As shown, a first protrusion 710 is provided on the other end of the transmission block 700 away from the assembly groove 250, and a slot 811 is provided on the valve core 810 in the multi-way valve. The first protrusion 710 and the slot 811 cooperate with each other, and the first protrusion 710 on the transmission block 700 is inserted into the slot 811 on the valve core 810. The friction between the side wall of the slot 811 and the first protrusion 710 can drive the slot 811 to rotate with the transmission block 700, and transmit the rotation of the gear structure 200 to the slot 811 through the transmission block 700, thereby driving the valve core 810 to rotate with the gear set. Through the cooperation of the first protrusion 710 and the slot 811, the transmission block 700 can drive the valve core 810 to rotate when rotating, so as to realize the channel switching function inside the multi-way valve and change the flow direction of the medium inside the multi-way valve.

[0064] In some possible implementations, see Figure 5 and Figure 7 As shown, the transmission block 700 of the embodiment of the present application is provided with a second protrusion 720, and the valve body driver is provided with a limit block 721 around the second protrusion 720. When the limit block 721 and the second protrusion 720 abut, the limit block 721 can limit the rotation of the limit protrusion.

[0065] When the valve core 810 of the multi-way valve needs to rotate, the circuit board 300 can control the driving motor 100 to rotate, the driving motor 100 drives the gear set to rotate, the gear set drives the transmission block 700 to rotate together, the transmission block 700 rotates and is connected with the card slot 811 on the valve core 810 and drives the valve core 810 to rotate. A limit block 721 is set on the box body 500, and the limit block 721 is located around the rotation track of the transmission block 700. When the transmission block 700 rotates to the set position, it is blocked by the limit block 721 and cannot continue to rotate. The limit block 721 limits the forward rotation position or reverse rotation position of the valve core 810 by limiting the rotation of the second protrusion 720 on the transmission block 700.

[0066] The following further describes the implementation of the present application in conjunction with possible usage scenarios of the multi-way valve. For example, the multi-way valve provided in the implementation of the present application can be used as a four-way valve for a heat pump air conditioner, and the four-way valve can include a four-way valve body and a valve body driver. In the valve body driver, the drive motor 100 adopts an integrated motor, which has low cost and simple installation method, and can save manufacturing cost and installation cost. The drive motor 100 outputs torque through the gear structure 200 to control the valve core 810 of the four-way valve to rotate, change the flow channel of the refrigerant in the heat pump air conditioning system, change the flow direction of the refrigerant, and switch the function of the heat pump air conditioner. The gear structure 200 can be a four-stage reduction structure. Through the multi-stage reduction of the gear structure 200, the valve body driver can achieve a large torque output to control the rotation of the valve core 810 inside the multi-way valve, and realize the channel switching function inside the four-way valve.

[0067] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A valve body driver, characterized in that: include: A drive motor having a motor shaft; A circuit board connected to the driving motor; A magnetic ring, fixedly connected to the motor shaft; A sensor is arranged on the circuit board, and the sensor is used to obtain the rotation angle of the magnetic ring.

2. The valve body actuator according to claim 1, characterized in that: The valve body driver includes a gear structure, which includes a plurality of gear groups connected in sequence, wherein at least two of the gear groups that are partially connected are partially stacked in the axial direction, and a projection of one of the two gear groups in the axial direction coincides with a projection of the other in the axial direction, the gear group at the input end of the gear structure is connected to the motor shaft, and the gear group at the output end of the gear structure is used to connect to the valve core of the valve body to drive the valve core to rotate.

3. The valve body actuator according to claim 2, characterized in that: The gear set includes a driving gear and a driven gear meshing with each other, and the diameter of the driving gear in the same gear set is smaller than the diameter of the driven gear.

4. The valve body actuator according to claim 3, characterized in that: In the two connected gear sets, the driving gear of one gear set and the driven gear of the other gear set are coaxial and fixedly connected.

5. The valve body actuator according to claim 3, characterized in that: Axial directions of the plurality of gear sets connected in sequence are parallel to each other.

6. The valve body driver according to any one of claims 1 to 5, characterized in that: The drive motor comprises an integrated drive motor, and the stator and the rotor of the integrated drive motor are an integrated structure.

7. The valve body driver according to any one of claims 1 to 5, characterized in that: A controller is arranged on the circuit board, and the controller is used for controlling the rotation of the driving motor.

8. The valve body driver according to any one of claims 2 to 5, characterized in that: The valve body driver also includes a box body and a box cover, the box body and the box cover are fixedly connected, the drive motor and the gear structure are located in the box body, and a first sealing ring is provided between the box body and the box cover, and the first sealing ring seals and connects the box body and the box cover.

9. The valve body actuator according to claim 8, characterized in that: The box body and the box cover are connected by ultrasonic welding.

10. The valve body actuator according to claim 8, characterized in that: A second sealing ring is provided between the box body and the output end of the gear structure, and the second sealing ring seals and connects the box body and the output end of the gear structure.

11. A multi-way valve, characterized in that: It comprises a valve core and a valve body driver according to any one of claims 1 to 10, wherein a transmission block is provided at the output end of the valve body driver, and the transmission block is fixedly connected to the valve core.

12. The multi-way valve according to claim 11, characterized in that: The transmission block is provided with a first protrusion, the valve core is provided with a clamping groove, and the first protrusion is accommodated in the clamping groove and fixedly connected to the inner wall of the clamping groove.

13. The multi-way valve according to claim 11 or 12, characterized in that: The transmission block is provided with a second protrusion, and the valve body driver further comprises a limit block, and the limit block is used for abutting against the second protrusion to limit the rotation of the second protrusion.

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