control valve

Abstract

This invention relates to a control valve, comprising a valve body, a first valve core, and a second valve core. The valve body has a valve cavity, and its side wall has multiple communicating holes that penetrate the side wall and communicate with the valve cavity. The first valve core is rotatably disposed at one end of the valve cavity, and its periphery has multiple first and second channels. The second valve core is rotatably disposed at the other end of the valve cavity, and is coaxially arranged with the first valve core, and has a third channel. Compared to existing control valves with a single valve core structure, the control valve provided by this invention can achieve more communication modes. Furthermore, because the first and second valve cores are disposed within the same valve cavity of the valve body and are coaxially arranged, the control valve structure of this invention is more compact and has a smaller volume compared to existing control valves.

Description

Technical Field

[0001] This invention relates to the field of fluid control technology, and more specifically to a control valve. Background Technology

[0002] In the field of fluid control technology, multi-channel control valves are commonly used to control flow paths, enabling the control valves to form different connection modes. Currently, some control valves have relatively simple structures but few connection modes, fewer than 10, making it difficult to meet the demand for more connection modes. Other control valves have more connection modes, but their larger size hinders miniaturization. Summary of the Invention

[0003] Therefore, it is necessary to provide a control valve with multiple connection modes and a compact structure.

[0004] This invention provides a control valve comprising a valve body, a first valve core, and a second valve core. The valve body has a valve cavity, and its side wall has multiple communicating holes penetrating the side wall and communicating with the valve cavity. The first valve core is rotatably disposed at one end of the valve cavity, and its periphery has multiple first channels and second channels. The second valve core is rotatably disposed at the other end of the valve cavity, and is coaxially arranged with the first valve core. The second valve core has a third channel. The communicating holes include multiple first flow channels and multiple second flow channels. Rotating the first valve core by a first predetermined angle allows the first channel to connect to two corresponding first flow channels, and the second channel to connect to one corresponding first flow channel. Rotating the second valve core by a second predetermined angle allows the third channel to connect to one or two second flow channels, and the third channel can also connect to a corresponding second channel, so that one first flow channel connects to one or two corresponding second flow channels through the second and third channels.

[0005] In one embodiment of the present invention, the control valve has 2n first flow channels, where n≥2, and two second flow channels. Each first channel can connect two different first flow channels to form less than or equal to n-1 two-way flow paths, and one first flow channel can connect to one second flow channel through a second channel and a third channel to form a two-way flow path. Alternatively, each first channel can connect two different first flow channels to form less than or equal to n-1 two-way flow paths, and one first flow channel can connect to two second flow channels through a second channel and a third channel to form a three-way flow path. In this way, the connecting holes provided on the valve body can be utilized to the maximum extent, increasing the number of two-way flow channels that can be formed on the control valve and increasing the utilization rate of the control valve.

[0006] In one embodiment of the present invention, the connecting holes are distributed in two rows on the valve body. Each row of connecting holes includes n first flow channels and one second flow channel, and the two second flow channels are located at the same end of the valve body. This makes the distribution of the connecting holes on the valve body more reasonable and aesthetically pleasing, which is beneficial for machining the connecting holes on the valve body and improves the machining efficiency of the control valve.

[0007] In one embodiment of the present invention, the first valve core has a columnar structure and a shut-off groove, which corresponds to closing one first flow channel. The first channel includes an axial two-way groove and a circumferential two-way groove. The axial two-way groove can correspondingly connect two first flow channels arranged along the axial direction of the valve body, and the circumferential two-way groove can correspondingly connect two first flow channels arranged along the circumference of the valve body. Along the circumferential direction of the first valve core, the first valve core includes a first sector segment, a second sector segment, a third sector segment, a fourth sector segment, and a fifth sector segment with a sector-shaped cross-section connected end to end along the circumference of the first valve core. The end of the first sector segment away from the second valve core is provided with two circumferential two-way grooves distributed along the axial direction of the first valve core. The end of the first sector segment near the second valve core is provided with an axial two-way groove, a shut-off groove, and a second channel. The axial two-way groove is located on the side of the first sector segment near the second sector segment. The shut-off groove and the second channel are distributed along the axial direction of the first valve core on the side of the first sector segment near the fifth sector segment, and the second channel is close to the second valve core. The second sector segment is mirror-symmetrical to the first sector segment. The third sector segment, from the direction away from the second valve core to the direction closer to the second valve core, has an axial two-way groove, a stop groove, and a second channel in sequence. The fourth sector segment, from the direction away from the second valve core to the direction closer to the second valve core, has two axial two-way grooves in sequence. The fifth sector segment, from the direction away from the second valve core to the direction closer to the second valve core, has an axial two-way groove, a stop groove, and a second channel in sequence.

[0008] In one embodiment of the present invention, the valve body includes a sidewall portion and a mounting portion. The sidewall portion is the peripheral wall of the valve cavity or at least a part of the peripheral wall. A connecting hole is provided in the sidewall portion. One side of the mounting portion is fixedly connected to the sidewall portion, and the other side of the mounting portion opposite to the sidewall portion has a mounting plane. The mounting plane has a valve port communicating with the corresponding connecting hole. By providing a sidewall portion and having the connecting hole located in the sidewall portion, the connecting hole can be more tightly positioned on the valve body. Since the control valve needs to be installed on other components during use, and a mounting portion connected to the sidewall portion is provided on the outside of the valve body, the control valve can be installed on other components via the mounting portion. Furthermore, the mounting plane on the other side of the mounting portion opposite to the sidewall portion greatly reduces the difficulty of installing the control valve on other components and improves the installation efficiency of the control valve.

[0009] In one embodiment of the present invention, the control valve further includes a sealing gasket disposed between the first valve core and the side wall portion. The sealing gasket has a cutout communicating with the corresponding first flow channel. One side surface of the sealing gasket in the thickness direction contacts and seals with the surface of the first valve core, and the other side surface of the sealing gasket in the thickness direction is sealed to the inner surface of the side wall portion. Thus, when fluid enters the valve cavity from the first flow channel, it must first pass through the cutout on the sealing gasket. Because one side surface of the sealing gasket in the thickness direction contacts and seals with the surface of the first valve core, and the other side surface of the sealing gasket in the thickness direction is sealed to the inner surface of the side wall portion, fluid leakage at the connection between the first valve core and the valve body is difficult to occur, thereby facilitating the use of the control valve.

[0010] In one embodiment of the present invention, the control valve further includes a sealing cylinder disposed between the second valve core and the side wall portion. The sealing cylinder correspondingly connects the second flow channel and the third channel. One end of the sealing cylinder contacts and seals against the outer surface of the second valve core, while the other end of the sealing cylinder is sealed to the inner surface of the side wall portion. Thus, fluid leakage at the connection between the second valve core and the valve body is difficult, thereby facilitating the use of the control valve.

[0011] In one embodiment of the present invention, the second valve core includes a side plate and an end plate. The side plate is annular, and the end plate is located at one end of the side plate near the first valve core, forming a receiving cavity with the side plate and the end plate. The side plate has an opening through which the second valve core communicates with a second flow channel. The end plate has an opening through which the second valve core communicates with a second channel. The opening, the receiving cavity, and the opening together constitute a third channel. This configuration simplifies the structure of the second valve core and reduces the manufacturing difficulty of the control valve.

[0012] In one embodiment of the present invention, the control valve further includes a first drive shaft, a second drive shaft, a first actuator assembly, and a second actuator assembly. The first drive shaft is fixedly connected to the first valve core. The second drive shaft is fixedly connected to the second valve core, and the second drive shaft is sleeved outside the first drive shaft and coaxially arranged with the first drive shaft. The first actuator assembly is connected to the first drive shaft to drive the first drive shaft to rotate. The second actuator assembly is connected to the second drive shaft to drive the second drive shaft to rotate. Thus, the rotation of the first valve core can be controlled independently by the first actuator assembly, and the rotation of the second valve core can be controlled independently by the second actuator assembly, which facilitates separate adjustment of the first and second valve cores and improves the flexibility of the control valve.

[0013] In one embodiment of the present invention, the first actuator assembly includes a first motor assembly and a first reducer assembly. The first reducer assembly connects the first motor assembly and a first drive shaft. The first motor assembly reduces its output speed and drives the first drive shaft to rotate via the first reducer assembly. The second actuator assembly includes a second motor assembly and a second reducer assembly. The second reducer assembly connects the second motor assembly and the second drive shaft. The second motor assembly reduces its output speed and drives the second drive shaft to rotate via the second reducer assembly. The first motor assembly significantly improves the control accuracy of the first valve core. Similarly, the second motor assembly significantly improves the control accuracy of the second valve core. The first reducer assembly helps to reduce the speed of the first motor assembly to a reasonable range, preventing the first valve core from rotating too fast and affecting its control. Likewise, the second reducer assembly helps to reduce the speed of the second motor assembly to a reasonable range, preventing the second valve core from rotating too fast and affecting its control.

[0014] In one embodiment of the present invention, the first motor assembly includes a first motor and a first worm gear. The first worm gear is connected to the output shaft of the first motor. The first reducer assembly includes a first worm wheel, a first secondary gear, a first connecting gear, and a first output gear that are sequentially meshed. The first worm wheel is meshed with the first worm gear, and the first output gear is engaged with the end of the first transmission shaft extending out of the second transmission shaft. By setting the first worm gear and the first worm wheel, the connection between the first motor and the first secondary gear is facilitated, and there is a large transmission ratio between the first worm gear and the first worm wheel, that is, the angular velocity of the first worm wheel is much smaller than the angular velocity of the first worm gear. This helps to reduce the rotational speed of the first motor. Furthermore, by setting the first secondary gear, the output speed of the first motor is further reduced, which is beneficial for the control valve to accurately control the rotational angle of the first valve core.

[0015] The second motor assembly includes a second motor and a second worm gear. The second worm gear is connected to the output shaft of the second motor. The second reducer assembly includes a second worm wheel, a second secondary gear, a second connecting gear, and a second output gear that are sequentially meshed. The second worm wheel is meshed with the second worm gear. The second output gear is sleeved on the portion of the first transmission shaft extending out of the second transmission shaft and is engaged with the end of the second transmission shaft away from the first valve core. By setting up the second worm gear and the second worm wheel, the connection between the second motor and the second secondary gear is facilitated, and there is a large transmission ratio between the second worm gear and the second worm wheel. That is, the angular velocity of the second worm wheel is much smaller than the angular velocity of the second worm gear, which helps to reduce the speed of the second motor. Furthermore, by setting up the second secondary gear, the output speed of the second motor is further reduced, which is beneficial for the control valve to accurately control the rotation angle of the second valve core.

[0016] In one embodiment of the present invention, the first secondary gear includes a first major diameter gear and a first minor diameter gear, which are coaxially arranged and fixedly connected. The diameter of the first major diameter gear is larger than the diameter of the first minor diameter gear. The first major diameter gear meshes with a first worm gear, and the first minor diameter gear meshes with a first connecting gear. Thus, the structure of the first secondary gear is simpler, which helps reduce the assembly difficulty of the first actuator assembly, thereby improving the assembly efficiency of the entire control valve.

[0017] And / or, the second-stage gear includes a second major-diameter gear and a second minor-diameter gear, which are coaxially arranged and fixedly connected. The diameter of the second major-diameter gear is larger than that of the second minor-diameter gear. The second major-diameter gear meshes with the second worm gear, and the second minor-diameter gear meshes with the second connecting gear. This simplifies the structure of the second-stage gear, reducing the assembly difficulty of the second actuator assembly and thus improving the assembly efficiency of the entire control valve.

[0018] In one embodiment of the present invention, the control valve further includes a housing, and both the first actuator assembly and the second actuator assembly are disposed within the housing. The housing has a transmission hole. The first output gear includes a first gear portion and a first connecting portion. The first gear portion meshes with a first connecting gear. One end of the first connecting portion is fixedly connected to the first gear portion, and the other end is connected to a first drive shaft through the transmission hole. The second output gear includes a second gear portion and a second connecting portion. The second gear portion meshes with a second connecting gear. One end of the second connecting portion is fixedly connected to the second gear portion, and the other end is connected to a second drive shaft through the transmission hole. By providing a housing and housing both the first actuator assembly and the second actuator assembly within the housing, the structural compactness of the control valve is further improved.

[0019] In one embodiment of the present invention, a first sealing ring is provided between the first drive shaft and the drive hole, and the first sealing ring is sleeved on the first drive shaft. This improves the sealing performance of the connection between the first drive shaft and the housing, thereby improving the overall sealing performance of the control valve.

[0020] And / or, a second sealing ring is provided between the second connecting part and the transmission hole, and the second sealing ring is sleeved on the second connecting part. In this way, the connection sealing between the second output gear and the housing is improved, thereby improving the overall sealing performance of the control valve.

[0021] The control valve provided by this invention includes two coaxially arranged first valve cores and second valve cores. These two valve cores can be rotated at different angles to achieve multiple different communication modes. Specifically, assuming that the first valve core can achieve *a* communication modes by rotating at different angles, and the second valve core can achieve *b* communication modes by rotating at different angles, then the entire control valve can achieve *a*b* communication modes.

[0022] The connection mode includes two-way or three-way flow paths formed at different positions of the control valve. A two-way flow path refers to a fluid passage with only one inlet and one outlet, while a three-way flow path refers to a fluid passage with only one inlet but two outlets, or two inlets but one outlet.

[0023] The first channel on the first valve core can correspond to the two first flow channels on the valve body, so that the control valve can form one or more two-way flow paths. That is, in the two-way flow path, fluid can enter the control valve from one of the first flow channels and flow out of the control valve from the other first flow channel through the first channel.

[0024] Furthermore, the second channel can connect to one first channel, and the third channel can connect to one or two second channels, with the third channel correspondingly connecting to a second channel. Therefore, a first channel can be connected to one or two second channels through the second and third channels.

[0025] When a first flow channel is connected to a second flow channel via a second and a third channel, the control valve has a two-way flow path; that is, the fluid can enter the control valve from the first flow channel, and then enter the second flow channel through the second and third channels in sequence, and finally leave the control valve through the second flow channel; or, the fluid can enter the control valve from the second flow channel, and then enter the first flow channel through the third and second channels in sequence, and finally leave the control valve through the first flow channel.

[0026] When a first flow channel is connected to two second flow channels via a second and a third channel, the control valve has a three-way flow path. That is, the fluid can enter the control valve from the first flow channel, and then sequentially enter the two second flow channels via the second and third channels, and finally exit the control valve through the two second flow channels; or, the fluid can enter the control valve from the two second flow channels, and then sequentially enter the first flow channel via the third and second channels, and finally exit the control valve through the first flow channel; or, the fluid can enter the control valve from one first flow channel and one second flow channel, and finally exit the control valve through the other second flow channel; or, the fluid can enter the control valve from one second flow channel, and finally exit the control valve through one first flow channel and the other second flow channel.

[0027] As can be seen from the above, the control valve provided by the present invention can achieve more communication modes compared to existing control valves with a single valve core structure. Furthermore, because the first and second valve cores of the control valve are located in the same valve cavity of the valve body and are coaxially arranged, the control valve structure of the present invention is more compact and has a smaller volume compared to existing control valves. Attached Figure Description

[0028] Figure 1 Disassembly of a control valve according to an embodiment of the present invention Figure 1 ;

[0029] Figure 2 Disassembly of a control valve according to an embodiment of the present invention Figure 2 ;

[0030] Figure 3 This is a cross-sectional view of a control valve according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of a partial structure of a control valve according to an embodiment of the present invention. Figure 1 ;

[0032] Figure 5 for Figure 4 Side view of the control valve shown;

[0033] Figure 6 for Figure 4 A cross-sectional view of the control valve shown.

[0034] Figure 7 This is an exploded view of the valve body according to an embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the valve body according to an embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the structure of the first valve core according to an embodiment of the present invention;

[0037] Figure 10 A cross-sectional view of the first valve core according to an embodiment of the present invention. Figure 1 ;

[0038] Figure 11 A cross-sectional view of the first valve core according to an embodiment of the present invention. Figure 2 ;

[0039] Figure 12 This is a schematic diagram of the structure of a sealing gasket according to an embodiment of the present invention;

[0040] Figure 13 This is a schematic diagram of the structure of a first valve core connected with a sealing gasket according to an embodiment of the present invention;

[0041] Figure 14 This is a schematic diagram of the structure of the second valve core according to an embodiment of the present invention;

[0042] Figure 15 This is a cross-sectional view of the second valve core according to an embodiment of the present invention;

[0043] Figure 16 This is a schematic diagram of the structure of a sealing cylinder according to an embodiment of the present invention. Figure 1 ;

[0044] Figure 17This is a schematic diagram of the structure of a sealing cylinder according to an embodiment of the present invention. Figure 2 ;

[0045] Figure 18 This is a cross-sectional view of a sealing cylinder according to an embodiment of the present invention;

[0046] Figure 19 This is a schematic diagram of the structure of a second valve core equipped with a sealing cylinder according to an embodiment of the present invention;

[0047] Figure 20 The side structure of the first valve core and the second valve core as shown in an embodiment of the present invention, unfolded along the circumferential direction.

[0048] Schematic diagram;

[0049] Figure 21 This is a schematic diagram of a partial structure of a control valve according to an embodiment of the present invention. Figure 2 ;

[0050] Figure 22 for Figure 20 An exploded view of the control valve shown.

[0051] Figure 23 This is a partial cross-sectional view of a control valve according to an embodiment of the present invention;

[0052] Figure 24 This is a schematic diagram of the connection relationship when the control valve is in the first connection mode according to an embodiment of the present invention;

[0053] Figure 25 This is a schematic diagram of the connection relationship when the control valve is in the second connection mode according to an embodiment of the present invention;

[0054] Figure 26 This is a schematic diagram of the connection relationship when the control valve is in the third connection mode according to an embodiment of the present invention;

[0055] Figure 27 This is a schematic diagram of the connection relationship when the control valve is in the fourth connection mode according to an embodiment of the present invention;

[0056] Figure 28 This is a schematic diagram of the connection relationship when the control valve is in the fifth connection mode according to an embodiment of the present invention;

[0057] Figure 29 This is a schematic diagram of the connection relationship when the control valve is in the sixth connection mode according to an embodiment of the present invention;

[0058] Figure 30 This is a schematic diagram of the connection relationship when the control valve is in the seventh connection mode according to an embodiment of the present invention;

[0059] Figure 31 This is a schematic diagram of the connection relationship when the control valve is in the eighth connection mode according to an embodiment of the present invention;

[0060] Figure 32 This is a schematic diagram of the connection relationship when the control valve is in the ninth connection mode according to an embodiment of the present invention;

[0061] Figure 33 This is a schematic diagram of the connection relationship when the control valve is in the tenth connection mode according to an embodiment of the present invention;

[0062] Figure 34 This is a schematic diagram of the connection relationship when the control valve is in the eleventh connection mode according to an embodiment of the present invention;

[0063] Figure 35 This is a schematic diagram of the connection relationship when the control valve is in the twelfth connection mode according to an embodiment of the present invention.

[0064] Reference numerals: 1. Valve body; 11. Valve cavity; 12. Side wall; 121. Connecting hole; 121a. First flow channel; 121b. Second flow channel; 13. Mounting part; 131. Mounting plane; 132. Valve port; 14. Main body; 141. Assembly port; 15. Valve cover; 2. First valve core; 21. First channel; 211. Axial two-way groove; 212. Circumferential two-way groove; 22. Second channel; 22a. First connecting port; 22b. Second connecting port 23. Through-hole; 24. Stop groove; 25. First sector segment; 26. Second sector segment; 27. Third sector segment; 28. Fourth sector segment; 29. ​​Fifth sector segment; 30. Second valve core; 31. Third channel; 32. Side plate; 321. Opening; 33. End plate; 331. Opening; 34. Receiving cavity; 4. Sealing gasket; 41. Cutout; 5. Sealing cylinder; 51. Sealing block; 52. Rubber ring; 53. Metal spring; 61. First drive shaft; 62. 7. Second drive shaft; 8. First actuator assembly; 9. First motor assembly; 10. First motor assembly; 11. First motor; 12. First worm gear; 13. First reducer assembly; 14. First worm wheel; 15. First secondary gear; 16. First major diameter gear; 17. First minor diameter gear; 18. First connecting gear; 19. First output gear; 10. First gear section; 10. First connecting part; 11. Second motor assembly; 12. Second worm gear; 13. Second reducer assembly; 14. Second worm wheel; 15. Second secondary gear; 16. Second major diameter gear; 17. Second minor diameter gear; 18. Second connecting gear; 19. Second output gear; 10. Second gear section; 10. Second connecting part; 10. Housing; 11. Transmission hole; 12. First sealing ring; 13. Second sealing ring. Detailed Implementation

[0065] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0066] It should be noted that when a component is said to be "mounted on" another component, it can be directly mounted on the other component or may be interspersed with a component. When a component is said to be "set on" another component, it can be directly set on the other component or may be interspersed with a component. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or may be interspersed with a component.

[0067] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0068] Please see Figure 1-7 This invention provides a control valve comprising a valve body 1, a first valve core 2, and a second valve core 3. The valve body 1 has a valve cavity 11 and includes a main body 14 and a valve cover 15. The main body 14 has an assembly port 141, and the valve cover 15 is disposed on the assembly port 141 and detachably connected to the main body 14. The valve cavity 11 is located in the main body 14, and the first valve core 2 and the second valve core 3 are installed in the valve cavity 11 of the main body 14 through the assembly port 141. The side wall of the valve body 1 has multiple communicating holes 121, which penetrate the side wall of the valve body 1 and communicate with the valve cavity 11. The first valve core 2 is rotatably disposed at one end of the valve cavity 11, and the second valve core 3 is rotatably disposed at the other end of the valve cavity 11, and the second valve core 3 is coaxially arranged with the first valve core 2.

[0069] Continue reading Figure 9 , Figure 14 and Figure 20The first valve core 2 has multiple first channels 21 and second channels 22 on its periphery, and the second valve core 3 has a third channel 31. The connecting hole 121 includes multiple first flow channels 121a and multiple second flow channels 121b. When the first valve core 2 is rotated by a first predetermined angle, the first channel 21 can connect to two first flow channels 121a, and the second channel 22 can connect to one first flow channel 121a. When the second valve core 3 is rotated by a second predetermined angle, the third channel 31 can connect to one or two second flow channels 121b, and the third channel 31 can also connect to the second channel 22, so that one first flow channel 121a can connect to one or two second flow channels 121b through the second channel 22 and the third channel 31.

[0070] Since the control valve includes two coaxially arranged first valve core 2 and second valve core 3, the first valve core 2 and the second valve core 3 can be rotated at different angles to enable the control valve to form multiple different connection modes. Specifically, assuming that the first valve core 2 can achieve a connection mode a by rotating at different angles, and the second valve core 3 can achieve a connection mode b by rotating at different angles, then the entire control valve can achieve a*b connection modes.

[0071] The connection mode includes two-way or three-way flow paths formed at different positions of the control valve. A two-way flow path refers to a fluid passage with only one inlet and one outlet, while a three-way flow path refers to a fluid passage with only one inlet but two outlets, or two inlets but one outlet.

[0072] The first channel 21 on the first valve core 2 can correspond to the two first flow channels 121a on the valve body 1, so that the control valve forms one or more two-way flow paths. That is, in the two-way flow path, fluid can enter the control valve from one of the first flow channels 121a and flow out of the control valve from the other first flow channel 121a through the first channel 21.

[0073] Furthermore, the second channel 22 can connect to a first flow channel 121a, and the third channel 31 can connect to one or two second flow channels 121b, and the third channel 31 can correspondingly connect to the second channel 22. Therefore, a first flow channel 121a can be correspondingly connected to one or two second flow channels 121b through the second channel 22 and the third channel 31.

[0074] When a first flow channel 121a is connected to a second flow channel 121b via a second channel 22 and a third channel 31, the control valve has a two-way flow path; that is, fluid can enter the control valve from the first flow channel 121a, and sequentially enter the second flow channel 121b via the second channel 22 and the third channel 31, and finally leave the control valve via the second flow channel 121b; or, fluid can enter the control valve from the second flow channel 121b, and sequentially enter the first flow channel 121a via the third channel 31 and the second channel 22, and finally leave the control valve via the first flow channel 121a.

[0075] When a first flow channel 121a is connected to two second flow channels 121b via the second channel 22 and the third channel 31, the control valve has a three-way flow path. That is, fluid can enter the control valve from the first flow channel 121a, and sequentially enter the two second flow channels 121b via the second channel 22 and the third channel 31, and finally exit the control valve via the two second flow channels 121b; or, fluid can enter the control valve from the two second flow channels 121b, and sequentially enter the first flow channel 121a via the third channel 31 and the second channel 22, and finally exit the control valve via the first flow channel 121a; or, fluid can enter the control valve from one first flow channel 121a and one second flow channel 121b, and finally exit the control valve via the other second flow channel 121b; or, fluid can enter the control valve from one second flow channel 121b, and finally exit the control valve via one first flow channel 121a and the other second flow channel 121b.

[0076] As can be seen from the above, the control valve provided by the present invention can achieve more communication modes compared with the existing control valve with a single valve core structure. Furthermore, because the first valve core 2 and the second valve core 3 of the control valve are located in the same valve chamber 11 of the valve body 1, and the first valve core 2 and the second valve core 3 are coaxially arranged, the control valve structure of the present invention is more compact and has a smaller volume compared with existing control valves.

[0077] In one embodiment, such as Figure 5As shown, the control valve has 2n first flow channels 121a, where n≥2, and two second flow channels 121b. Each first channel 21 can connect two different first flow channels 121a to form less than or equal to n-1 two-way flow paths, and one first flow channel 121a can connect to one second flow channel 121b through the second channel 22 and the third channel 31 to form one two-way flow path. Alternatively, each first channel 21 can connect two different first flow channels 121a to form less than or equal to n-1 two-way flow paths, and one first flow channel 121a can connect to two second flow channels 121b through the second channel 22 and the third channel 31 to form one three-way flow path. In this way, the connecting holes 121 provided on the valve body 1 can be utilized to the maximum extent, increasing the number of two-way flow paths that can be formed on the control valve and increasing the utilization rate of the control valve.

[0078] Furthermore, such as Figure 5 As shown, the connecting holes 121 are distributed in two rows on the valve body 1. Each row of connecting holes 121 includes n first flow channels 121a and one second flow channel 121b, with the two second flow channels 121b located at the same end of the valve body 1. This makes the distribution of the connecting holes 121 on the valve body 1 more reasonable and aesthetically pleasing, which is beneficial for machining the connecting holes 121 on the valve body 1 and improves the machining efficiency of the control valve. However, this is not the only possibility; the connecting holes 121 can also be distributed in three, four, or five rows, etc., on the valve body 1, which will not be listed here.

[0079] In one embodiment, such as Figure 9-11 as well as Figure 20 As shown, the first valve core 2 has a columnar structure and a shut-off groove 23, which corresponds to closing one first flow channel 121a. The first channel 21 includes an axial two-way groove 211 and a circumferential two-way groove 212. The axial two-way groove 211 can connect two first flow channels 121a arranged along the axial direction of the valve body 1, and the circumferential two-way groove 212 can connect two first flow channels 121a arranged along the circumference of the valve body 1. Along the circumferential direction of the first valve core 2, the first valve core 2 includes a first sector segment 24, a second sector segment 25, a third sector segment 26, a fourth sector segment 27, and a fifth sector segment 28 with a sector-shaped cross-section connected end to end along the circumference of the first valve core 2.

[0080] Specifically, the first sector segment 24, at its end furthest from the second valve core 3, has two circumferential two-way grooves 212 distributed along the axial direction of the first valve core 2. The first sector segment 24, at its end closest to the second valve core 3, has an axial two-way groove 211, a stop groove 23, and a second channel 22. The axial two-way groove 211 is located on the side of the first sector segment 24 closest to the second sector segment 25. The stop groove 23 and the second channel 22 are distributed along the axial direction of the first valve core 2 on the side of the first sector segment 24 closest to the fifth sector segment 28, with the second channel 22 close to the second valve core 3. The second sector segment 25 is mirror-symmetrical to the first sector segment 24. The third sector segment 26, from furthest from the second valve core 3 to closest to the second valve core 3, has an axial two-way groove 211, a stop groove 23, and a second channel 22 sequentially. The fourth sector segment 27, from furthest from the second valve core 3 to closest to the second valve core 3, has two axial two-way grooves 211 sequentially. The fifth sector segment 28 is provided with an axial two-way groove 211, a stop groove 23 and a second channel 22 in sequence from the direction away from the second valve core 3 to the direction close to the second valve core 3.

[0081] More specifically, n is 4. Therefore, the control valve has 8 first flow channels 121a, and the 8 first flow channels 121a and 2 second flow channels 121b are divided into two rows, with the two rows of connecting holes 121 being mirror-symmetrical. Furthermore, in this embodiment, both the first valve core 2 and the second valve core 3 rotate along the first direction E. The cross-sectional central angle of the first sector segment 24 is 720° / 7, the cross-sectional central angle of the second sector segment 25 is 720° / 7, the cross-sectional central angle of the third sector segment 26 is 360° / 7, the cross-sectional central angle of the fourth sector segment 27 is 360° / 7, and the cross-sectional central angle of the fifth sector segment 28 is 360° / 7. This arrangement ensures that the rotation angle of the first valve core 2 is an integer multiple of 360° / 7, which facilitates the adjustment of the first valve core 2 and reduces the difficulty of adjusting the control valve.

[0082] like Figure 24 As shown, when the control valve is in the first connection mode, the first predetermined angle is zero, the first flow channel 121a rotates to the first sector segment 24, the second predetermined angle is zero, the third channel 31 connects to the second flow channel 121b located below, and the third channel 31 connects to the second channel 22 located in the first sector segment 24. The corresponding first flow channel 121a, second channel 22, third channel 31 and second flow channel 121b form a two-way flow path. The three first channels 21 respectively connect to two different first flow channels 121a and form three two-way flow paths. The shut-off groove 23 correspondingly closes one first flow channel 121a to form a closed flow path.

[0083] like Figure 25As shown, when the control valve is in the second connection mode, the first predetermined angle is zero, the first flow channel 121a rotates to the first sector segment 24, the second predetermined angle is a 120° rotation along the first direction, the third channel 31 connects to the upper second flow channel 121b, and the third channel 31 connects to the second channel 22 located in the first sector segment 24. A first flow channel 121a, a second channel 22, a third channel 31, and a second flow channel 121b form a two-way flow path. The three first channels 21 respectively connect to two different first flow channels 121a and form three two-way flow paths. The shut-off groove 23 correspondingly closes one first flow channel 121a to form a closed flow path.

[0084] like Figure 26 As shown, when the control valve is in the third connection mode, the first predetermined angle is zero, the first flow channel 121a rotates to the first sector segment 24, the second predetermined angle is a 60° rotation along the first direction, the third channel 31 connects to the two second flow channels 121b, and the third channel 31 connects to the second channel 22 located in the first sector segment 24. The corresponding first flow channel 121a, second channel 22, third channel 31, and two second flow channels 121b form a three-way flow path. The three first channels 21 respectively connect to two different first flow channels 121a and form three two-way flow paths. The shut-off groove 23 correspondingly closes one first flow channel 121a to form a closed flow path.

[0085] like Figure 27 As shown, when the control valve is in the fourth connection mode, the first predetermined angle is a rotation of 720° / 7 along the first direction, the first flow channel 121a rotates to the second sector segment 25, the second predetermined angle is zero, the third channel 31 connects to the second flow channel 121b located below, and the third channel 31 connects to the second channel 22 located in the second sector segment 25. A first flow channel 121a, a second channel 22, a third channel 31, and a second flow channel 121b form a two-way flow path. The three first channels 21 respectively connect to two different first flow channels 121a and form three two-way flow paths. The shut-off groove 23 correspondingly closes one first flow channel 121a to form a closed flow path.

[0086] like Figure 28As shown, when the control valve is in the fifth connection mode, the first predetermined angle is a rotation of 720° / 7 along the first direction, the first flow channel 121a rotates to the second sector segment 25, the second predetermined angle is a rotation of 120° along the first direction, the third channel 31 connects to the second flow channel 121b located above, and the third channel 31 connects to the second channel 22 located in the second sector segment 25. A first flow channel 121a, a second channel 22, a third channel 31, and a second flow channel 121b form a two-way flow path. The three first channels 21 respectively connect to two different first flow channels 121a and form three two-way flow paths. The shut-off groove 23 correspondingly closes one first flow channel 121a to form a closed flow path.

[0087] like Figure 29 As shown, when the control valve is in the sixth connection mode, the first predetermined angle is a rotation of 720° / 7 along the first direction, the first flow channel 121a rotates to the second sector segment 25, the second predetermined angle is a rotation of 60° along the first direction, the third channel 31 connects to the two second flow channels 121b, and the third channel 31 connects to the second channel 22 located in the second sector segment 25. The corresponding first flow channel 121a, second channel 22, third channel 31 and two second flow channels 121b form a three-way flow path. The three first channels 21 respectively connect to two different first flow channels 121a and form three two-way flow paths. The shut-off groove 23 correspondingly closes one first flow channel 121a to form a closed flow path.

[0088] like Figure 30 As shown, when the control valve is in the seventh connection mode, the first predetermined angle is a rotation of 1440° / 7 along the first direction. The first flow channel 121a rotates to the third sector segment 26 and the fourth sector segment 27. The second predetermined angle is zero. The third channel 31 connects to the second flow channel 121b located below, and the third channel 31 also connects to the second channel 22 located in the third sector segment 26. The corresponding first flow channel 121a, second channel 22, third channel 31, and second flow channel 121b form a two-way flow path. The three first channels 21 respectively connect to two different first flow channels 121a and form three two-way flow paths. The shut-off groove 23 correspondingly closes one first flow channel 121a to form a closed flow path.

[0089] like Figure 31As shown, when the control valve is in the eighth connection mode, the first predetermined angle is a rotation of 1440° / 7 along the first direction, and the first flow channel 121a rotates to the third sector segment 26 and the fourth sector segment 27. The second predetermined angle is a rotation of 120° along the first direction, and the third channel 31 connects to the second flow channel 121b located above, and the third channel 31 also connects to the second channel 22 located in the third sector segment 26. Correspondingly, one first flow channel 121a, the second channel 22, the third channel 31, and the second flow channel 121b form a two-way flow path. The three first channels 21 respectively connect to two different first flow channels 121a and form three two-way flow paths. The shut-off groove 23 correspondingly closes one first flow channel 121a to form a closed flow path.

[0090] like Figure 32 As shown, when the control valve is in the ninth connection mode, the first predetermined angle is a rotation of 1440° / 7 along the first direction, and the first flow channel 121a rotates to the third sector segment 26 and the fourth sector segment 27. The second predetermined angle is a rotation of 60° along the first direction, and the third channel 31 connects to the two second flow channels 121b, and the third channel 31 connects to the second channel 22 located in the third sector segment 26. The corresponding first flow channel 121a, second channel 22, third channel 31 and two second flow channels 121b form a three-way flow path. The three first channels 21 respectively connect to two different first flow channels 121a and form three two-way flow paths. The shut-off groove 23 correspondingly closes one first flow channel 121a to form a closed flow path.

[0091] like Figure 33 As shown, when the control valve is in the tenth connection mode, the first predetermined angle is a rotation of 1800° / 7 along the first direction. The first flow channel 121a rotates to the fourth sector segment 27 and the fifth sector segment 28. The second predetermined angle is zero. The third channel 31 connects to the second flow channel 121b located below, and the third channel 31 also connects to the second channel 22 located in the fifth sector segment 28. The corresponding first flow channel 121a, second channel 22, third channel 31, and second flow channel 121b form a two-way flow path. The three first channels 21 respectively connect to two different first flow channels 121a and form three two-way flow paths. The shut-off groove 23 correspondingly closes one first flow channel 121a to form a closed flow path.

[0092] like Figure 34As shown, when the control valve is in the eleventh connection mode, the first predetermined angle is a rotation of 1800° / 7 along the first direction, and the first flow channel 121a rotates to the fourth sector segment 27 and the fifth sector segment 28. The second predetermined angle is a rotation of 120° along the first direction, and the third channel 31 connects to the second flow channel 121b located above, and the third channel 31 also connects to the second channel 22 located in the fifth sector segment 28. Correspondingly, one first flow channel 121a, the second channel 22, the third channel 31, and the second flow channel 121b form a two-way flow path. The three first channels 21 respectively connect to two different first flow channels 121a and form three two-way flow paths. The shut-off groove 23 correspondingly closes one first flow channel 121a to form a closed flow path.

[0093] like Figure 35 As shown, when the control valve is in the twelfth connection mode, the first predetermined angle is a rotation of 1800° / 7 along the first direction, the first flow channel 121a rotates to the fourth sector segment 27 and the fifth sector segment 28, the second predetermined angle is a rotation of 60° along the first direction, the third channel 31 connects to the two second flow channels 121b, and the third channel 31 connects to the second channel 22 located in the fifth sector segment 28. The corresponding first flow channel 121a, second channel 22, third channel 31 and two second flow channels 121b form a three-way flow path. The three first channels 21 respectively connect to two different first flow channels 121a and form three two-way flow paths. The shut-off groove 23 correspondingly closes one first flow channel 121a to form a closed flow path.

[0094] In one embodiment, such as Figure 8 As shown, the valve body 1 includes a side wall portion 12 and a mounting portion 13. The side wall portion 12 is part of the peripheral wall of the valve cavity 11. A connecting hole 121 is provided in the side wall portion 12. One side of the mounting portion 13 is fixedly connected to the side wall portion 12, and the other side of the mounting portion 13 opposite to the side wall portion 12 has a mounting plane 131. The mounting plane 131 has a valve port 132 that connects to the corresponding connecting hole 121. By providing the side wall portion 12 and the connecting hole 121 being located in the side wall portion 12, the connecting hole 121 can be more tightly fitted on the valve body 1. When the control valve is in use, it needs to be installed on other components. By providing the mounting portion 13 connected to the side wall portion 12 on the outside of the valve body 1, the control valve can be installed on other components through the mounting portion 13. Furthermore, the mounting plane 131 on the other side of the mounting portion 13 opposite to the side wall portion 12 greatly reduces the difficulty of installing the control valve on other components and improves the installation efficiency of the control valve. Specifically, the mounting plane 131 has multiple threaded holes, and the control valve can be detachably connected to other components via fasteners.

[0095] Furthermore, such as Figure 12 and 13As shown, the control valve also includes a sealing gasket 4, which is disposed between the first valve core 2 and the side wall portion 12. The sealing gasket 4 has a cutout 41 communicating with the corresponding first flow channel 121a. One side surface of the sealing gasket 4 in the thickness direction contacts and seals the surface of the first valve core 2, while the other side surface of the sealing gasket 4 in the thickness direction is sealed to the inner surface of the side wall portion 12. Thus, when fluid enters the valve chamber 11 from the first flow channel 121a, it must first pass through the cutout 41 on the sealing gasket 4. Since one side surface of the sealing gasket 4 in the thickness direction contacts and seals the surface of the first valve core 2, and the other side surface of the sealing gasket 4 in the thickness direction is sealed to the inner surface of the side wall portion 12, fluid is unlikely to leak at the connection between the first valve core 2 and the valve body 1, thereby facilitating the use of the control valve. Specifically, the sealing gasket 4 is sheet-shaped, and the surface of the sealing gasket 4 near the first valve core 2 is relatively smooth, which facilitates the rotation of the first valve core 2 relative to the sealing gasket 4. The sealing gasket 4 is usually made of rubber or silicone, and the entire sealing gasket 4 is molded as a single piece.

[0096] Furthermore, such as Figure 16-19 As shown, the control valve also includes a sealing cylinder 5, which is disposed between the second valve core 3 and the side wall portion 12. The sealing cylinder 5 is connected to the second flow channel 121b and the third channel 31. One end of the sealing cylinder 5 contacts and seals against the outer surface of the second valve core 3, and the other end of the sealing cylinder 5 is sealed to the inner surface of the side wall portion 12. This makes it difficult for fluid to leak at the connection between the second valve core 3 and the valve body 1, thus facilitating the use of the control valve. Specifically, the sealing cylinder 5 is cylindrical, and the end face of the sealing cylinder 5 near the second valve core 3 is a smooth curved surface, which facilitates the sealing cylinder 5 fitting snugly against the surface of the second valve core 3. More specifically, the sealing cylinder 5 includes a sealing block 51 and a metal spring 53 connected to one end of the sealing block 51. The end of the sealing block 51 away from the metal spring 53 contacts and seals against the outer surface of the second valve core 3, and the end of the metal spring 53 away from the sealing block 51 abuts against the valve body 1. Thus, the metal spring 53 can provide sufficient buffer space for the sealing cylinder 5, preventing the sealing cylinder 5 from undergoing plastic deformation after being impacted, which would affect the sealing performance of the control valve. In addition, a rubber ring 52 is fitted on the outer side of the sealing block 51, and the outer side of the rubber ring 52 away from the sealing block 51 is in close contact with the inner wall of the second flow channel 121b.

[0097] In one embodiment, such as Figure 14-15As shown, the second valve core 3 includes a side plate 32 and an end plate 33. The side plate 32 is annular, and the end plate 33 is located at one end of the side plate 32 near the first valve core 2. The side plate 32 and the end plate 33 together form a receiving cavity 34. The side plate 32 has an opening 321 through which the second valve core 3 connects to the second flow channel 121b. The end plate 33 has an opening 331 through which the second valve core 3 connects to the second channel 22. The opening 321, the receiving cavity 34, and the opening 331 together constitute the third channel 31. When the side plate 32 rotates to the part of the valve body 1 with the second flow channel 121b at the opening 321, the third channel 31 connects to the second flow channel 121b. Furthermore, if the opening 321 is aligned with two second flow channels 121b, the third channel 31 connects to both second flow channels 121b simultaneously; if the opening 321 is aligned with only one second flow channel 121b, the third channel 31 connects to only that single second flow channel 121b. When the side plate 32 rotates to a part of the valve body 1 with the second flow channel 121b other than the opening 321, the third channel 31 does not connect to the second flow channel 121b. This configuration simplifies the structure of the second valve core 3 and reduces the manufacturing difficulty of the control valve. Similarly, as... Figure 9 As shown, the second channel 22 also has two connecting ports, namely the first connecting port 22a and the second connecting port 22b. The first connecting port 22a faces the valve body 1 and is used to connect the first flow channel 121a. The second connecting port 22b is located at the end of the first valve core 2 facing the second valve core 3 and is used to connect the opening 331.

[0098] In one embodiment, such as Figure 1-3 as well as Figure 21-23As shown, the control valve also includes a first drive shaft 61, a second drive shaft 62, a first actuator assembly 7, and a second actuator assembly 8. The first drive shaft 61 is fixedly connected to the first valve core 2. The second drive shaft 62 is fixedly connected to the second valve core 3, and is sleeved outside the first drive shaft 61, with the second drive shaft 62 coaxial with the first drive shaft 61. The first actuator assembly 7 is connected to the first drive shaft 61 to drive the first drive shaft 61 to rotate. The second actuator assembly 8 is connected to the second drive shaft 62 to drive the second drive shaft 62 to rotate. Thus, the rotation of the first valve core 2 can be controlled independently by the first actuator assembly 7, and the rotation of the second valve core 3 can be controlled independently by the second actuator assembly 8, which facilitates separate adjustment of the first valve core 2 and the second valve core 3, improving the flexibility of the control valve. In this embodiment, both the first actuator assembly 7 and the second actuator assembly 8 are located on the side of the second valve core 3 away from the first valve core 2. To improve the compactness of the control valve structure, the second drive shaft 62 is sleeved outside the first drive shaft 61. However, this is not the only possibility. When both the first actuator assembly 7 and the second actuator assembly 8 are located on the side of the first valve core 2 away from the second valve core 3, the first drive shaft 61 can also be sleeved on the outside of the second drive shaft 62. When the first actuator assembly 7 is located on the side of the first valve core 2 away from the second valve core 3, and both second actuator assemblies 8 are located on the side of the second valve core 3 away from the first valve core 2, the first drive shaft 61 and the second drive shaft 62 do not have a sleeved relationship. In this embodiment, the first drive shaft 61 passes through the entire first valve core 2, which facilitates a tighter connection between the first drive shaft 61 and the first valve core 2.

[0099] In one embodiment, such as Figure 14 As shown, a rotationally symmetrical support plate is provided inside the receiving cavity 34. One end of the support plate is connected to the second drive shaft 62, and the other end is connected to the inner wall of the side plate 32. This improves the structural strength of the second valve core 3, thereby increasing the service life of the control valve.

[0100] In one embodiment, such as Figure 21As shown, the first actuator assembly 7 includes a first motor assembly 71 and a first reducer assembly 72. The first reducer assembly 72 connects the first motor assembly 71 and the first drive shaft 61. The first motor assembly 71 reduces its output speed and drives the first drive shaft 61 to rotate via the first reducer assembly 72. The second actuator assembly 8 includes a second motor assembly 81 and a second reducer assembly 82. The second reducer assembly 82 connects the second motor assembly 81 and the second drive shaft 62. The second motor assembly 81 reduces its output speed and drives the second drive shaft 62 to rotate via the second reducer assembly 82. The first motor assembly 71 significantly improves the control accuracy of the first valve core 2. Similarly, the second motor assembly 81 significantly improves the control accuracy of the second valve core 3. The first reducer assembly 72 helps to reduce the speed of the first motor assembly 71 to a reasonable range, preventing the first valve core 2 from rotating too fast and affecting its control. Similarly, the second reducer assembly 82 helps to reduce the speed of the second motor assembly 81 to a reasonable range, preventing the second valve core 3 from rotating too fast and affecting its control.

[0101] Furthermore, such as Figure 21 and Figure 22 As shown, the first motor assembly 71 includes a first motor 711 and a first worm 712. The first worm 712 is connected to the output shaft of the first motor 711. The first reducer assembly 72 includes a first worm wheel 721, a first secondary gear 722, a first connecting gear 723, and a first output gear 724 that are sequentially meshed. The first worm wheel 721 is meshed with the first worm 712, and the first output gear 724 is engaged with the end of the first transmission shaft 61 extending out of the second transmission shaft 62. By setting the first worm 712 and the first worm wheel 721, the connection between the first motor 711 and the first secondary gear 722 is facilitated, and there is a large transmission ratio between the first worm 712 and the first worm wheel 721. That is, the angular velocity of the first worm wheel 721 is much smaller than the angular velocity of the first worm 712, which helps to reduce the speed of the first motor 711. Furthermore, by setting the first secondary gear 722, the output speed of the first motor 711 is further reduced, which is beneficial for the control valve to accurately control the rotation angle of the first valve core 2.

[0102] The second motor assembly 81 includes a second motor 811 and a second worm gear 812. The second worm gear 812 is connected to the output shaft of the second motor 811. The second reducer assembly 82 includes a second worm wheel 821, a second secondary gear 822, a second connecting gear 823, and a second output gear 824 that are sequentially meshed. The second worm wheel 821 is meshed with the second worm gear 812. The second output gear 824 is sleeved on the portion of the first transmission shaft 61 that extends out of the second transmission shaft 62, and the second output gear 824 is engaged with the end of the second transmission shaft 62 away from the first valve core 2. By setting the second worm gear 812 and the second worm wheel 821, the connection between the second motor 811 and the second secondary gear 822 is facilitated, and there is a large transmission ratio between the second worm gear 812 and the second worm wheel 821. That is, the angular velocity of the second worm wheel 821 is much smaller than the angular velocity of the second worm gear 812, which helps to reduce the speed of the second motor 811. By setting the second gear 822, the output speed of the second motor 811 is further reduced, which is beneficial for the control valve to accurately control the rotation angle of the second valve core 3.

[0103] Furthermore, in one embodiment, such as Figure 22 As shown, the first and second stage gears 722 include a first major diameter gear 722a and a first minor diameter gear 722b. The first major diameter gear 722a and the first minor diameter gear 722b are coaxially arranged and fixedly connected. The diameter of the first major diameter gear 722a is larger than the diameter of the first minor diameter gear 722b. The first major diameter gear 722a meshes with the first worm gear 721, and the first minor diameter gear 722b meshes with the first connecting gear 723. Thus, the structure of the first and second stage gears 722 is simpler, which helps to reduce the assembly difficulty of the first actuator assembly 7, thereby improving the assembly efficiency of the entire control valve.

[0104] In one embodiment, such as Figure 22 As shown, the second-stage gear 822 includes a second major-diameter gear 822a and a second minor-diameter gear 822b. The second major-diameter gear 822a and the second minor-diameter gear 822b are coaxially arranged and fixedly connected. The diameter of the second major-diameter gear 822a is larger than the diameter of the second minor-diameter gear 822b. The second major-diameter gear 822a meshes with the second worm gear 821, and the second minor-diameter gear 822b meshes with the second connecting gear 823. Thus, the structure of the second-stage gear 822 is simpler, which helps to reduce the assembly difficulty of the second actuator assembly 8, thereby improving the assembly efficiency of the entire control valve.

[0105] In one embodiment, such as Figure 21-23As shown, the control valve also includes a housing 9, and the first actuator assembly 7 and the second actuator assembly 8 are both disposed within the housing 9. The housing 9 is provided with a transmission hole 91. By providing the housing 9 and placing the first actuator assembly 7 and the second actuator assembly 8 within the housing 9, the structural compactness of the control valve is further improved.

[0106] The first output gear 724 includes a first gear portion 724a and a first connecting portion 724b. The first gear portion 724a meshes with the first connecting gear 723. One end of the first connecting portion 724b is fixedly connected to the first gear portion 724a, and the other end is connected to the first drive shaft 61 through a transmission hole 91. "The other end is connected to the first drive shaft 61 through a transmission hole 91" means that the end of the first connecting portion 724b away from the first gear portion 724a passes through the transmission hole 91 and extends out of the housing 9 to connect with the first drive shaft 61, or that one end of the first drive shaft 61 extends into the transmission hole 91 and connects with the end of the first connecting portion 724b away from the first gear portion 724a. Typically, the first connecting part 724b is engaged with the first drive shaft 61 via a keyway. That is, the first connecting part 724b is provided with a limit key, and the first drive shaft 61 is provided with a limit groove corresponding to the limit key, with the limit key engaged in the limit groove. Alternatively, the first connecting part 724b is provided with a limit groove, and the first drive shaft 61 is provided with a limit key corresponding to the limit groove, with the limit key engaged in the limit groove.

[0107] The second output gear 824 includes a second gear portion 824a and a second connecting portion 824b. The second gear portion 824a meshes with the second connecting gear 823. One end of the second connecting portion 824b is fixedly connected to the second gear portion 824a, and the other end is connected to the second drive shaft 62 through a transmission hole 91. "The other end is connected to the second drive shaft 62 through a transmission hole 91" means that the end of the second connecting portion 824b away from the second gear portion 824a passes through the transmission hole 91 and extends out of the housing 9 to connect with the second drive shaft 62, or that one end of the second drive shaft 62 extends into the transmission hole 91 and connects to the end of the second connecting portion 824b away from the second gear portion 824a. Typically, the second connecting part 824b is engaged with the second drive shaft 62 via a keyway. That is, the second connecting part 824b is provided with a limit key, and the second drive shaft 62 is provided with a limit groove corresponding to the limit key, with the limit key engaged in the limit groove. Alternatively, the second connecting part 824b is provided with a limit groove, and the second drive shaft 62 is provided with a limit key corresponding to the limit groove, with the limit key engaged in the limit groove.

[0108] Furthermore, such as Figure 22 and Figure 23 As shown, a first sealing ring 100 is provided between the first drive shaft 61 and the drive hole 91, and the first sealing ring 100 is sleeved on the first drive shaft 61. In this way, the connection sealing between the first drive shaft 61 and the housing 9 is improved, thereby improving the sealing performance of the entire control valve.

[0109] In one embodiment, such as Figure 22 and Figure 23 As shown, a second sealing ring is provided between the second connecting part 824b and the transmission hole 91, and the second sealing ring is sleeved on the second connecting part 824b. In this way, the connection sealing between the second output gear 824 and the housing 9 is improved, thereby improving the sealing performance of the entire control valve.

[0110] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0111] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any appropriate changes and variations made to the above embodiments within the essential spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A control valve, characterized in that, The valve includes a valve body (1) with a valve cavity (11). The side wall of the valve body (1) has multiple connecting holes (121) that penetrate the side wall of the valve body (1) and communicate with the valve cavity (11). A first valve core (2) is rotatably disposed at one end of the valve cavity (11). The first valve core (2) has multiple first channels (21) and second channels (22) on its periphery. A second valve core (3) is rotatably disposed at the other end of the valve cavity (11). The second valve core (3) is coaxially disposed with the first valve core (2) and has a third channel (31). The connecting hole (121) includes multiple first flow channels (121a) and multiple second flow channels (121b). Rotating the first valve core (2) by a first predetermined angle allows the first channel (21) to connect to two first flow channels (121a), and the second channel (22) to connect to one first flow channel (121a). Rotating the second valve core (3) by a second predetermined angle allows the third channel (31) to connect to one or two second flow channels (121b), and the third channel (31) to connect to the second channel (22), so that one first flow channel (121a) connects to one or two second flow channels (121b) through the second channel (22) and the third channel (31). The connecting holes (121) are arranged in two columns on the valve body (1), with each column of connecting holes (121)... Each includes n first flow channels (121a) and one second flow channel (121b). Along the circumferential direction of the first valve core (2), the first valve core (2) includes a fan-shaped section with a cross-section that is connected end to end along the circumferential direction of the first valve core (2). When the first flow channel (121a) rotates to different fan-shaped sections, the control valve is in different communication modes. When the control valve is in any communication mode, the fan-shaped section is directly opposite to the communication hole. The first valve core (2) is provided with a stop groove (23). The stop groove (23) is located in at least one of the fan-shaped sections. The stop groove (23) corresponds to closing one of the first flow channels (121a).

2. The control valve according to claim 1, characterized in that, The control valve has 2n first flow channels (121a), where n≥2, and the control valve has 2 second flow channels (121b); each first channel (21) can connect two different first flow channels (121a) to form less than or equal to n-1 two-way flow paths, and one first flow channel (121a) can connect one second flow channel (121b) through the second channel (22) and the third channel (31) to form a two-way flow path, or each first channel (21) can connect two different first flow channels (121a) to form less than or equal to n-1 two-way flow paths, and one first flow channel (121a) can connect two second flow channels (121b) through the second channel (22) and the third channel (31) to form a three-way flow path.

3. The control valve according to claim 2, characterized in that, The connecting holes (121) are divided into two columns distributed on the valve body (1). Each column of the connecting holes (121) includes n first flow channels (121a) and one second flow channel (121b), and the two second flow channels (121b) are located at the same end of the valve body (1).

4. The control valve according to claim 1, characterized in that, The first valve core (2) is a columnar structure. The first channel (21) includes an axial two-way groove (211) and a circumferential two-way groove (212). The axial two-way groove (211) can correspondingly connect two first flow channels (121a) arranged along the axial direction of the valve body (1). The circumferential two-way groove (212) can correspondingly connect two first flow channels (121a) arranged along the circumference of the valve body (1). Along the circumferential direction of the first valve core (2), the first valve core (2) includes a first valve core (2) with a fan-shaped cross-section and connected end to end along the circumference of the first valve core (2). The first sector segment (24), the second sector segment (25), the third sector segment (26), the fourth sector segment (27), and the fifth sector segment (28) are provided with two circumferential two-way grooves (212) distributed along the axial direction of the first valve core (2) at the end away from the second valve core (3). The first sector segment (24) is provided with an axial two-way groove (211), a stop groove (23), and a second channel (22) at the end near the second valve core (3). The axial two-way groove (211) is located in the first sector segment (24). On the side near the second sector segment (25), the stop groove (23) and the second channel (22) are distributed along the axial direction of the first valve core (2) on the side of the first sector segment (24) near the fifth sector segment (28), and the second channel (22) is close to the second valve core (3). The second sector segment (25) is mirror symmetrical to the first sector segment (24). The third sector segment (26) is provided with an axial two-way groove (211), a stop groove (23) and a second channel (22) in sequence from the direction away from the second valve core (3) to the direction close to the second valve core (3). The fourth sector segment (27) is provided with two axial two-way grooves (211) in sequence from the direction away from the second valve core (3) to the direction close to the second valve core (3). The fifth sector segment (28) is provided with an axial two-way groove (211), a stop groove (23) and a second channel (22) in sequence from the direction away from the second valve core (3) to the direction close to the second valve core (3).

5. The control valve according to claim 1, characterized in that, The valve body (1) includes a side wall portion (12) and a mounting portion (13). The side wall portion (12) is the peripheral wall of the valve cavity (11) or at least a part of the peripheral wall. The connecting hole (121) is provided on the side wall portion (12). One side of the mounting portion (13) is fixedly connected to the side wall portion (12). The mounting portion (13) has a mounting plane (131) on the other side away from the side wall portion (12). The mounting plane (131) is provided with a valve port (132) that connects to the connecting hole (121).

6. The control valve according to claim 5, characterized in that, It also includes a sealing gasket (4), which is disposed between the first valve core (2) and the side wall portion (12). The sealing gasket (4) has a cut (41) that communicates with the first flow channel (121a). One side surface of the sealing gasket (4) in the thickness direction contacts and seals the surface of the first valve core (2), and the other side surface of the sealing gasket (4) in the thickness direction is sealed to the inner surface of the side wall portion (12).

7. The control valve according to claim 5, characterized in that, It also includes a sealing cylinder (5), which is disposed between the second valve core (3) and the side wall portion (12). The sealing cylinder (5) is connected to the second flow channel (121b) and the third channel (31). One end of the sealing cylinder (5) contacts and seals the outer surface of the second valve core (3), and the other end of the sealing cylinder (5) is sealed to the inner surface of the side wall portion (12).

8. The control valve according to claim 1, characterized in that, The second valve core (3) includes a side plate (32) and an end plate (33). The side plate (32) is annular, and the end plate (33) is located at one end of the side plate (32) near the first valve core (2). The side plate (32) and the end plate (33) together form a receiving cavity (34). The side plate (32) has an opening (321), through which the second valve core (3) communicates with the second flow channel (121b). The end plate (33) has an opening (331), through which the second valve core (3) communicates with the second channel (22). The opening (321), the receiving cavity (34), and the opening (331) together constitute the third channel (31).

9. The control valve according to claim 1, characterized in that, It also includes a first drive shaft (61) fixedly connected to a first valve core (2); a second drive shaft (62) fixedly connected to a second valve core (3), the second drive shaft (62) being sleeved on the outside of the first drive shaft (61), and the second drive shaft (62) being coaxially arranged with the first drive shaft (61); a first actuator assembly (7) connected to the first drive shaft (61) to drive the first drive shaft (61) to rotate; and a second actuator assembly (8) connected to the second drive shaft (62) to drive the second drive shaft (62) to rotate.

10. The control valve according to claim 9, characterized in that, The first actuator assembly (7) includes a first motor assembly (71) and a first reducer assembly (72). The first reducer assembly (72) connects the first motor assembly (71) and the first drive shaft (61). The first motor assembly (71) reduces its output speed and drives the first drive shaft (61) to rotate through the first reducer assembly (72). The second actuator assembly (8) includes a second motor assembly (81) and a second reducer assembly (82). The second reducer assembly (82) connects the second motor assembly (81) and the second drive shaft (62). The second motor assembly (81) reduces its output speed and drives the second drive shaft (62) to rotate through the second reducer assembly (82).

11. The control valve according to claim 10, characterized in that, The first motor assembly (71) includes a first motor (711) and a first worm (712), the first worm (712) being connected to the output shaft of the first motor (711), and the first reducer assembly (72) including a first worm wheel (721) that is sequentially meshed. The first secondary gear (722), the first connecting gear (723), and the first output gear (724) are connected. The first worm gear (721) is meshed with the first worm (712), and the first output gear (724) is engaged with the end of the first drive shaft (61) that extends out of the second drive shaft (62). The second motor assembly (81) includes a second motor (811) and a second worm (812). The second worm (812) is connected to the output shaft of the second motor (811). The second reducer assembly (82) includes a second worm gear (821), a second secondary gear (822), a second connecting gear (823), and a second output gear (824) that are meshed in sequence. The second worm gear (821) is meshed with the second worm (812). The second output gear (824) is sleeved on the part of the first drive shaft (61) that extends out of the second drive shaft (62), and the second output gear (824) is engaged with the end of the second drive shaft (62) that is away from the first valve core (2).

12. The control valve according to claim 11, characterized in that, The first secondary gear (722) includes a first major diameter gear (722a) and a first minor diameter gear (722b), which are coaxially arranged and fixedly connected. The diameter of the first major diameter gear (722a) is larger than the diameter of the first minor diameter gear (722b). The first major diameter gear (722a) meshes with the first worm gear (721), and the first minor diameter gear (722b) meshes with the first connecting gear (723); and / or, the second secondary gear (822) includes a second major diameter gear (822a) and a second minor diameter gear (822b), which are coaxially arranged and fixedly connected. The diameter of the second major diameter gear (822a) is larger than the diameter of the second minor diameter gear (822b). The second major diameter gear (822a) meshes with the second worm gear (821), and the second minor diameter gear (822b) meshes with the second connecting gear (823).

13. The control valve according to claim 11, characterized in that, It also includes a housing (9), in which the first actuator assembly (7) and the second actuator assembly (8) are both disposed. The housing (9) is provided with a transmission hole (91). The first output gear (724) includes a first gear part (724a) and a first connecting part (724b). The first gear part (724a) is meshed with the first connecting gear (723). One end of the first connecting part (724b) is fixedly connected to the first gear part (724a), and the other end is connected to the first transmission shaft (61) through the transmission hole (91). The second output gear (824) includes a second gear part (824a) and a second connecting part (824b). The second gear part (824a) is meshed with the second connecting gear (823). One end of the second connecting part (824b) is fixedly connected to the second gear part (824a), and the other end is connected to the second transmission shaft (62) through the transmission hole (91).

14. The control valve according to claim 13, characterized in that, A first sealing ring (100) is provided between the first drive shaft (61) and the drive hole (91), and the first sealing ring (100) is sleeved on the first drive shaft (61); and / or, a second sealing ring is provided between the second connecting part (824b) and the drive hole (91), and the second sealing ring is sleeved on the second connecting part (824b).

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