control valve

Abstract

This application discloses a control valve, including a drive assembly, a valve body, a first valve core, a second valve core, a first drive shaft, and a second drive shaft. The drive assembly includes a first drive member and a second drive member. The first valve core is drivenly connected to the first drive member via the first drive shaft, and the second valve core is drivenly connected to the second drive member via the second drive shaft. The valve body includes a first limiting portion and a second limiting portion. The main body of the first valve core has a spherical structure, and the first valve core can deflect around the first limiting portion so that there is an angle between the axis of the first valve core and the axis of the cavity wall of the first chamber, and / or, the main body of the second valve core has a spherical structure, and the second valve core can deflect around the second limiting portion so that there is an angle between the axis of the second valve core and the axis of the cavity wall of the second chamber. This facilitates stable cooperation between the valve core and the corresponding drive member.

Description

Technical Field

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

[0002] Typically, the valve core of a control valve rotates under the drive of a driving device to achieve fluid control of multiple flow paths. When a control valve has two or more valve cores, how to achieve stable cooperation between the valve cores and the corresponding driving components is a problem that urgently needs to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide a control valve that facilitates stable cooperation between the valve core and the corresponding drive component.

[0004] This invention provides a control valve, including a drive assembly, a valve body, and a valve core. The valve core includes a first valve core and a second valve core. The control valve has a first chamber and a second chamber that communicate with each other. The arrangement direction of the first chamber and the second chamber intersects the height direction of the control valve. At least a portion of the first valve core is located in the first chamber and is rotatable, and at least a portion of the second valve core is located in the second chamber and is rotatable. Along the height direction of the control valve, the drive assembly is located on one side of the valve body. The drive assembly includes a housing, a first drive member, and a second drive member. The housing has a receiving cavity, and the first drive member and the second drive member are located in the receiving cavity. The control valve also includes a first drive shaft and a second drive shaft. The first drive shaft is driveably connected to the first drive member. The first drive shaft and the first valve core are integrally formed or driveably connected. The second drive shaft is connected to the first valve core. The second driving component is connected by transmission, and the second driving shaft and the second valve core are integrally formed or connected by transmission; the valve body includes a bottom wall portion, a first limiting portion and a second limiting portion, the bottom wall portion is located on the side of the valve core away from the driving component, the first limiting portion is fixedly connected to the bottom wall portion, the second limiting portion is fixedly connected to the bottom wall portion, the first valve core includes a first mating portion that limits and cooperates with the first limiting portion, and the second valve core includes a second mating portion that limits and cooperates with the second limiting portion; wherein, the main body of the first valve core has a spherical structure, the first valve core can deflect around the first limiting portion, and the axis of the first valve core can have an angle with the axis of the cavity wall of the first chamber; and / or, the main body of the second valve core has a spherical structure, the second valve core can deflect around the second limiting portion, and the axis of the second valve core can have an angle with the axis of the cavity wall of the second chamber.

[0005] According to the control valve provided in the embodiments of the present invention, the valve core of the control valve includes a first valve core and a second valve core, and the valve body includes a first limiting part and a second limiting part. The first limiting part can be limited and engaged with a first mating part of the first valve core to limit the first valve core, and the second limiting part can be limited and engaged with a second mating part of the second valve core to limit the second valve core. By setting the main body of the first valve core and / or the second valve core to a spherical structure, it is convenient for the spherical valve core to deflect around the corresponding limiting part. When the control valve is assembled, the deflection of the valve core can facilitate the transmission connection between the drive shaft and the corresponding drive component, so as to reduce the instability between the valve core and the corresponding drive component. Attached Figure Description

[0006] Figure 1 This is an exploded view of the control valve provided in one embodiment of the present invention;

[0007] Figure 2 This is a three-dimensional structural diagram of a control valve provided in one embodiment of the present invention at one of the angles;

[0008] Figure 3 yes Figure 2 The diagram shows a partial cross-sectional view of the control valve at one of its locations;

[0009] Figure 4 This is a partial cross-sectional view of the valve body provided in one embodiment of the present invention;

[0010] Figure 5 yes Figure 2 A partial cross-sectional view of the control valve at another location is shown.

[0011] Figure 6 yes Figure 2 The diagram shown is a front view of the control valve.

[0012] Figure 7 yes Figure 6 The diagram shows a cross-sectional view of the control valve along the AA direction.

[0013] Figure 8 yes Figure 6 The diagram shows a cross-sectional view of the control valve along the BB direction.

[0014] Figure 9 This is a schematic diagram of the structure of the first valve core provided in one embodiment of the present invention;

[0015] Figure 10 This is a schematic diagram of the combined structure of the second valve core and the second drive shaft provided in one embodiment of the present invention;

[0016] Figure 11 yes Figure 10The diagram shows a cross-sectional view of the combined structure of the second valve core and the second drive shaft.

[0017] Figure 12 This is a partial structural schematic diagram of a valve body provided in one embodiment of the present invention;

[0018] Figure 13 This is a schematic diagram of the lower housing structure provided in one embodiment of the present invention;

[0019] Figure 14 This is a schematic diagram of the structure of the first output gear provided in one embodiment of the present invention;

[0020] Figure 15 This is a schematic diagram of the structure of the second output gear provided in one embodiment of the present invention;

[0021] Figure 16 This is a schematic diagram of the distance between the second valve core, the second drive shaft, the cover portion, and the lower housing, and the deflection principle of the second valve core, provided in one embodiment of the present invention.

[0022] Figure 17 This is a schematic diagram of the structure of the cover portion provided in one embodiment of the present invention;

[0023] Figure 18 yes Figure 8 A magnified structural diagram of the Q region. Detailed Implementation

[0024] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. In this document, relational terms such as "first" and "second" are used merely to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0025] like Figures 1 to 4 As shown, this embodiment of the invention provides a control valve 1, including a drive assembly 100, a valve body 41, and at least two valve cores. Each valve core includes a first valve core 51 and a second valve core 52. At least a portion of the first valve core 51 and at least a portion of the second valve core 52 are located within the valve body 41. Rotating the valve cores can open or close the ports of the control valve 1 corresponding to the connecting chambers of the valve cores. Optionally, both the first valve core 51 and the second valve core 52 can rotate independently under the drive of the drive assembly 100, allowing the connecting chambers of the two valve cores to connect the ports of different control valves 1, thereby realizing the control function of the control valve 1 on the fluid. Further, the arrangement direction of the first valve core 51 and the second valve core 52 intersects the height direction of the control valve 1, such as... Figure 1 and Figure 3In this design, the first valve core 51 and the second valve core 52 are arranged perpendicular to the height direction of the control valve 1. The valve body 41 includes a bottom wall portion 411, a cover portion 418, and a side wall portion located at least partially between the bottom wall portion 411 and the cover portion 418. One of the bottom wall portion 411 and the cover portion 418 can be integrally formed with the side wall portion, while the other can be sealed to the side wall portion by welding. In this embodiment, the bottom wall portion 411 and the side wall portion are integrally formed, and the cover portion 418 and the side wall portion can be welded together. At least a portion of the first valve core 51 and at least a portion of the second valve core 52 are located between the cover portion 418 and the bottom wall portion 411. Both the bottom wall portion 411 and the cover portion 418 are sealed to the side wall portion to prevent leakage of fluid from the control valve. Along the height direction of the control valve 1, the drive assembly 100 is located on one side of the valve body 41. Figure 4 In this embodiment, the drive assembly 100 is located on the side of the cover portion 418 opposite to the bottom wall portion 411. The drive assembly 100 can drive the first valve core 20 and the second valve core 30 to rotate. It is understood that in this embodiment of the invention, there are two valve cores. In specific implementation, the number of valve cores can be set according to user needs. For example, the number of valve cores can be three, four, etc. The present invention does not limit this.

[0026] Further reading Figures 1 to 5 The control valve 1 has a first chamber AC1, a second chamber AC2, and a connecting channel AC3 connecting the first chamber AC1 and the second chamber AC2. The arrangement direction of the first chamber AC1 and the second chamber AC2 intersects the height direction of the control valve 1, for example, in... Figure 3 In this configuration, the arrangement of the first chamber AC1 and the second chamber AC2 is perpendicular to the height direction of the control valve 1. For example... Figure 4 The valve body 41 has a sidewall portion including a first sidewall portion 414 and a second sidewall portion 415. The first sidewall portion 414 and the second sidewall portion 415 are fixedly connected and sealed, or the first sidewall portion 414 and the second sidewall portion 415 are integrally formed. The first sidewall portion 414 is the peripheral wall of the first chamber AC1 or at least a part of the peripheral wall, and the second sidewall portion 415 is the peripheral wall of the second chamber AC2 or at least a part of the peripheral wall. One end of the connecting passage AC3 forms a connecting opening on the first sidewall portion 414, and the other end of the connecting passage AC3 forms a connecting opening on the second sidewall portion 415, so as to connect the first chamber AC1 and the second chamber AC2. Further reference Figure 4 The valve body 41 may also include a connecting wall portion 419 connecting the first side wall portion 414 and the second side wall portion 415. The connecting wall portion 419 may be located between the first side wall portion 414 and the second side wall portion 415. The connecting wall portion 419 is the peripheral wall of the connecting channel AC3 or at least part of the peripheral wall. Optionally, the first side wall portion 414, the second side wall portion 415 and the connecting wall portion 419 can be integrally formed to improve the sealing performance of the valve body 41.

[0027] Combination Figure 4 and Figure 5 In some embodiments, the control valve 1 has at least five channels. In this embodiment of the invention, the control valve 1 may have nine channels, including a first channel 416 and a second channel 417. One end of the first channel 416 passes through the first sidewall portion 414 to form a first communication port 4141, which is connected to the first chamber AC1. The other end of the first channel 416 passes through the outer surface of the control valve 1 to form a first port VP1, allowing fluid to enter or leave the control valve 1 from the first port VP1. One end of the second channel 417 passes through the second sidewall portion 415 to form a second communication port 4151, which is connected to the second chamber AC2. The other end of the second channel 417 passes through the outer surface of the control valve 1 to form a second port VP2, allowing fluid to enter or leave the control valve 1 from the second port VP2. In the control valve 1 provided in the embodiments of the present invention, by rotating the first valve core 20 and / or the second valve core 30, at least two first communication ports 4141 can be connected through the conducting cavity of the first valve core 20 to realize the connection between multiple first ports VP1, and the first communication ports 4141 and the second communication port 4151 can be connected through the conducting cavity of the first valve core 20 and the conducting cavity of the second valve core 30, thereby realizing multiple connection modes between the first port VP1 and the second port VP2, and realizing the control function of the control valve 1 on the fluid.

[0028] like Figure 1 , Figures 5 to 8 As shown, the drive assembly 100 includes a housing 10, a first drive member 20, and a second drive member 30. The housing 10 has a receiving cavity 101, and the first drive member 20 and the second drive member 30 are located in the receiving cavity 101. The first drive member 20 includes a first motor 21 and a first transmission gear set 22. The first motor 21 includes a first output shaft, which can be driven to the first transmission gear set 22 via a worm gear structure. The first transmission gear set 22 includes a first output gear 223. The power output by the first motor 21 can be transmitted to the first output gear 223 to drive the first valve core 51 to rotate. The second drive member 30 includes a second motor 31 and a second transmission gear set 32. The second motor 31 includes a second output shaft, which can be driven to the second transmission gear set 32 ​​via a worm gear structure. The second transmission gear set 32 ​​includes a second output gear 323. The power output by the second motor 31 can be transmitted to the second output gear 323 to drive the second valve core 52 to rotate. It should be noted that the transmission connection in this article can be a fixed connection through welding, fasteners, etc., or it can be made into one piece, as long as the two parts can rotate synchronously.

[0029] For easier independent rotation of the first valve core 51 and the second valve core 52, please refer to further details. Figure 1 , Figures 5 to 8 The control valve 1 also includes a first drive shaft 53 and a second drive shaft 54. The first drive shaft 53 is integral with the first valve core 51 or is connected by transmission. The second drive shaft 54 ​​is integral with the second valve core 52 or is connected by transmission. The first valve core 51 is connected to the first drive member 20 through the first drive shaft 53, and the second valve core 52 is connected to the second drive member 30 through the second drive shaft 54.

[0030] Since this invention includes a first valve core 51 and a second valve core 52, as well as a first driving member 20 and a second transmission member 30 respectively connected to the two valve cores, in order to reduce the instability of the valve core and the corresponding driving member due to errors in the assembly or manufacturing process of the control valve, please continue to refer to [the relevant documentation / section]. Figures 1 to 10 , Figure 16The valve body 41 includes a bottom wall portion 411, a first limiting portion 412, and a second limiting portion 413. The bottom wall portion 411 is located on the side of the valve core away from the drive assembly 100. The first limiting portion 412 is located in the first chamber AC1 and is fixedly connected to the bottom wall portion 411. The second limiting portion 413 is located in the second chamber AC2 and is fixedly connected to the bottom wall portion 411. The first valve core 51 includes a first mating portion 511 that is nested and engaged with the first limiting portion 412. The second valve core 52 includes a second mating portion 521 that is nested and engaged with the second limiting portion 413. Optionally, one of the first limiting portion 412 and the first mating portion 511 is a protruding structure and the other is a groove structure. One of the second limiting portion 413 and the second mating portion 521 is a protruding structure and the other is a groove structure. The protruding structure is embedded in the groove structure for limiting engagement. The first valve core 51 has a spherical structure and can deflect around the first limiting part 412, so that the axis of the first valve core 51 and the axis of the cavity wall of the first chamber AC1 can have an angle. When the first drive shaft 53 and the first valve core 51 are integrally formed, the axis of the first drive shaft 53 and the axis of the cavity wall of the first chamber AC1 can also have an angle. And / or, the second valve core 52 has a spherical structure and can deflect around the second limiting part 413, so that the axis of the second valve core 52 and the axis of the cavity wall of the second chamber AC2 can have an angle. When the second drive shaft 54 ​​and the second valve core 52 are integrally formed, the axis of the second drive shaft 54 ​​and the axis of the cavity wall of the second chamber AC2 can have an angle. By setting the valve core to drive the drive shaft to deflect around the corresponding limit part, when the control valve 1 is assembled, the deflection of the valve core can facilitate the transmission connection between the drive shaft and the corresponding drive component, so as to reduce the unstable cooperation between the two valve cores and the two corresponding drive components caused by the manufacturing or assembly error of the control valve 1, and facilitate the stable rotation of at least two valve cores of the control valve 1, thereby improving the stability of the control valve 1.

[0031] In some embodiments, the first drive shaft 53 and the first valve core 51 are an integral structure, for example, the first drive shaft 53 and the first valve core 51 can be integrally injection molded, while the second drive shaft 54 ​​and the second valve core 52 are separately arranged and connected in transmission, for example in... Figure 5 In the first valve core 52, the second valve core 52 has a drive shaft mounting hole, and the second drive shaft 54 ​​is sleeved into the drive shaft mounting hole and interference-fitted. The main body of the first valve core 51 is cylindrical. The first valve core 51 and the first drive shaft 53 are limited by the first limiting part 412, and the first valve core 51 and the first drive shaft 53 are coaxially arranged with the cavity wall of the first chamber AC1. The main body of the second valve core 52 is spherical. The second valve core 52 drives the second drive shaft 54 ​​to deflect around the second limiting part 413 so that there is an angle between the axis of the second drive shaft 54 ​​and the axis of the second chamber AC2.

[0032] To achieve the sealing performance of control 1, such as Figure 1 , Figures 5 to 8 As shown, in some embodiments, the control valve 1 further includes a first seal 61 and a second seal 62. The first seal 61 includes a first channel 611, which has the same number as the first communication port 4141 and is interconnected. The first seal 61 is sandwiched between the first side wall portion 414 and the first valve core 51, and the first seal 61 is coaxially arranged with the first valve core 51. The height of the first seal 61 matches the height of the main body portion of the first valve core 51. The number of second sealing elements 62 is the same as the number of second connecting ports 4151. Each second sealing element 62 includes a second channel 621 that communicates with the second connecting port 4151. The second sealing element 62 is sandwiched between a portion of the side surface of the second valve core 52 and a portion of the wall surface of the second side wall portion 415. A gap exists between another portion of the side surface of the second valve core 52 and another portion of the wall surface of the second side wall portion 415. Along the height direction of the control valve 1, a gap exists between the end face of the main body of the second valve core 52 and the valve body 41, facilitating the second valve core 52 to drive the second drive shaft 54 ​​to deflect around the second limiting portion 413, so that the axis of the second drive shaft 54 ​​has an angle with the axis of the second chamber AC2. This facilitates the connection of the first valve core 51 and the second valve core 52 to their respective drive components via their corresponding drive shafts. It can be understood that the main body of the first valve core 51 has a structure with a conducting cavity, for example... Figure 9 As shown, the main body of the first valve core 51 includes a top plate 512, a bottom plate 513, and a plurality of partitions 514 located between the top plate 512 and the bottom plate 513. The top plate 512, the bottom plate 513, and the partitions 514 define the conduction cavity of the first valve core 51. The main body of the second valve core 52 has a structure with a conduction cavity, for example... Figure 10 As shown, the main body of the second valve core 52 has a top surface 522, a bottom surface 523 and a spherical surface 524 located between the top surface 522 and the bottom surface 523. The second valve core 52 is located between the top surface 522 and the bottom surface 523.

[0033] like Figures 7 to 15 As shown, in some embodiments, the control valve 1 has nine channels, the first channel 416 has seven channels, the second channel 417 has two channels, the first drive shaft 53 includes a toothed portion 531, the first drive member 20 includes a first output gear 223, the first output gear 223 has a toothed hole 2231, and the toothed portion 531 is fitted into the toothed hole 2231; as Figure 10 and Figure 15As shown, the second drive shaft 54 ​​includes a connecting portion 541. At least a portion of the outer surface of the connecting portion 541 includes two opposing non-arc surfaces S1 and an arc surface S2 located between the two non-arc surfaces S1. The second drive member 30 includes a second output gear 323. The second output gear 323 has a connecting hole 3231. At least a portion of the hole wall of the connecting hole 3231 includes opposing non-arc wall surfaces S3 and an arc surface S4 located between the two non-arc wall surfaces S3. The non-arc wall surfaces S3 and the non-arc surfaces S1 are close to each other and opposite to each other. The connecting portion 541 is fitted into the connecting hole 3231. With the above arrangement, it is easy to realize the synchronous rotation of the first valve core 51 and the second valve core 52 with their respective corresponding drive members, and it is easy to realize the angle deflection adjustment of the second drive shaft 54.

[0034] Combination Figures 7 to 11 , Figure 16 In this embodiment of the invention, the first limiting part 412 is a first protruding structure, which protrudes from the bottom wall part 411. The first mating part 511 is a first groove structure, which extends from the surface of the first valve core 51 toward the bottom wall part 411 toward the interior of the first valve core 51. The first protruding structure is embedded in the first groove structure. The second limiting part 413 is a second protruding structure, which protrudes from the bottom wall part 411. The second mating part 521 is a second groove structure, which extends from the surface of the second valve core 52 toward the bottom wall part 411 toward the interior of the second valve core 52. The second protruding structure is embedded in the second groove structure. The second protruding structure and the second groove structure are in clearance fit. The tolerance between the outer wall surface of the second protruding structure and the inner wall surface of the second groove structure is ±0.06mm. At this time, the distance d1 between the outer wall surface of the second protruding structure and the inner wall surface of the second groove structure satisfies: 0≤d1≤0.06mm.

[0035] Based on this, combined Figure 5 , Figure 16 and Figure 17 When the valve body 41 also includes a cover portion 418, the cover portion 418 has a first through hole 4181 and a second through hole 4182. The first drive shaft 53 passes through the first through hole 4181 and is connected to the first output gear 223 for transmission. The second drive shaft 54 ​​passes through the second through hole 4182 and is connected to the second output gear 323 for transmission. The first through hole 4181 is coaxially arranged with the first output gear 223 and the first drive shaft 53 respectively. The second through hole 4182 and the second drive shaft 54 ​​are clearance-fitted. The tolerance between the hole wall of the second through hole 4182 and the shaft surface of the second drive shaft 54 ​​corresponding to the position of the second through hole 4182 is ±0.05mm. That is, the distance d2 between the hole wall of the second through hole 4182 and the shaft surface of the second drive shaft 54 ​​corresponding to the position of the second through hole 4182 satisfies: 0≤d2≤0.05mm.

[0036] Based on the above structural configuration, the main body of the second valve core 52 is a spherical structure. The gap structure between the second valve core 52 and the valve body 41, along with the distances d1 and d2, enable the second valve core 52 to drive the second drive shaft 54 ​​to deflect. In some embodiments, the tolerance between the midpoint of the surface of the second drive shaft 54 ​​away from the second valve core 52 and the axis of the cavity wall of the first chamber AC1 is ±0.01mm. That is, the distance d3 between the midpoint of the surface of the second drive shaft 54 ​​away from the second valve core 52 and the axis of the cavity wall of the first chamber AC1 satisfies: 0≤d3≤0.1mm. This configuration facilitates ensuring the assembly accuracy of the first valve core 51 and the second valve core 52, thereby improving the stability of the control valve.

[0037] Furthermore, combined Figure 8 , Figure 13 , Figure 17 and Figure 18 As shown, in some embodiments, the lower housing 11 of the drive assembly 100 has a third through hole 111. The second drive shaft 54 ​​passes through the second through hole 4182 of the cover portion 418 and the third through hole 111 of the lower housing 11 and is connected to the second output gear 323 for transmission. The control valve 1 also includes a first oil seal 63 and a second oil seal 64. The first oil seal 63 and the second oil seal 64 are respectively disposed on both sides of the cover portion 418 in the thickness direction. The first oil seal 63 and the second oil seal 64 are both sleeved on the outer peripheral side of the second drive shaft 54. The cover portion 418 has a valve core 52 facing towards the second valve core 52. A first protrusion 4183 and a first oil seal 63 are sandwiched between the first protrusion 4183 and the second drive shaft 54. The lower housing 11 also includes a bottom housing portion 113 and a second protrusion 112. The bottom housing portion 113 forms the wall portion of the receiving cavity 101 or at least a part of the wall portion. At least a portion of the second protrusion 112 is located on the side of the bottom housing portion 113 opposite to the second output gear 323. The second oil seal 64 is sandwiched between the bottom housing portion 113 and the second drive shaft 54. Both the first oil seal 63 and the second oil seal 64 have a compression amount between them and the outer surface of the second drive shaft 54. With the above arrangement, on the one hand, the sealing performance of the control valve can be easily achieved; on the other hand, by providing two oil seals with compression amount, the deflection of the second drive shaft 54 ​​driven by the second valve core 52 can be easily achieved.

[0038] It is understood that when the control valve 1 has a valve core, the main body of the valve core is spherical. The specific arrangement of the valve core and the positional relationship between the valve body and the housing connected to the spherical valve core are similar to the structure of the control valve in any of the above embodiments. The present invention does not limit this. The above arrangement enables the valve core and the corresponding driving component to be stably connected by deflection of the spherical valve core. For example, it can improve the matching accuracy between the valve core and the corresponding driving component and achieve better coaxiality.

[0039] In summary, according to the control valve 1 provided in the embodiments of the present invention, the valve core of the control valve 1 includes a first valve core 51 and a second valve core 52. The first valve core 51 and the second valve core 52 can rotate to conduct the corresponding port VP of the control valve 1, which facilitates the realization of multiple flow modes of the control valve 1. The valve body 41 includes a first limiting part 412 and a second limiting part 413. The first limiting part 412 can limit the first valve core 51 by limiting the first valve core 51 with the first mating part 511. The second limiting part 413 can limit the second valve core 52 by limiting the second valve core 52 with the second mating part 521. By setting the main body of the first valve core 51 and / or the second valve core 52 to a spherical structure, the valve core can deflect around the corresponding limiting part. When the control valve 1 is manufactured or assembled, the deflection of the valve core can facilitate the transmission connection between the drive shaft and the corresponding drive component, so as to reduce the unstable cooperation between the two drive shafts and the two drive components caused by the manufacturing or assembly error of the control valve 1, which is convenient for widespread application.

[0040] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. For example, the directional definitions such as "front", "back", "left", "right", "up", and "down" are used. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify, combine or make equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A control valve, comprising a drive assembly, a valve body, and a valve core, characterized in that, The valve core includes a first valve core and a second valve core. The control valve has a first chamber and a second chamber that are in communication with each other. The arrangement direction of the first chamber and the second chamber intersects the height direction of the control valve. At least a portion of the first valve core is located in the first chamber and is rotatable. At least a portion of the second valve core is located in the second chamber and is rotatable. Along the height direction of the control valve, the drive assembly is located on one side of the valve body. The drive assembly includes a housing, a first drive member, and a second drive member. The housing has a receiving cavity, and the first drive member and the second drive member are located in the receiving cavity. The control valve also includes a first drive shaft and a second drive shaft. The first drive shaft is drivenly connected to the first drive member. The first drive shaft and the first valve core are either an integral structure or drivenly connected. The second drive shaft is drivenly connected to the second drive member. The second drive shaft and the second valve core are either an integral structure or drivenly connected. The valve body includes a bottom wall portion, a first limiting portion, and a second limiting portion. The bottom wall portion is located on the side of the valve core away from the drive assembly. The first limiting portion is fixedly connected to the bottom wall portion, and the second limiting portion is fixedly connected to the bottom wall portion. The first valve core includes a first mating portion that is limited and cooperates with the first limiting portion, and the second valve core includes a second mating portion that is limited and cooperates with the second limiting portion. Wherein, the main body of the first valve core has a spherical structure, the first valve core can deflect around the first limiting part, and the axis of the first valve core can have an angle with the axis of the cavity wall of the first chamber; and / or, the main body of the second valve core has a spherical structure, the second valve core can deflect around the second limiting part, and the axis of the second valve core can have an angle with the axis of the cavity wall of the second chamber.

2. The control valve according to claim 1, characterized in that, The first drive shaft and the first valve core are integral structures, while the second drive shaft and the second valve core are separately arranged and connected in transmission. The main body of the first valve core is a column structure. The first valve core is limited by the first limiting part, and both the first valve core and the first drive shaft are coaxially arranged with the cavity wall of the first chamber. The main body of the second valve core has a spherical structure, and the second valve core can deflect around the second limiting part so that there is an angle between the axis of the second drive shaft and the axis of the second chamber.

3. The control valve according to claim 2, characterized in that, The valve body further includes a first sidewall portion and a second sidewall portion. The first sidewall portion forms the peripheral wall of the first chamber or at least a part of the peripheral wall, and the second sidewall portion forms the peripheral wall of the second chamber or at least a part of the peripheral wall. The control valve also has a channel, which includes a first channel and a second channel. The first channel penetrates the first sidewall portion to form a first communication port, and the second channel penetrates the second sidewall portion to form a second communication port. The control valve further includes a first seal and a second seal. The first seal includes a first channel, the number of which is the same as the number of first connecting ports. The first channel communicates with the corresponding first connecting port. The first seal is sandwiched between the first side wall portion and the first valve core, and the first seal is coaxially arranged with the first valve core. The height of the first seal matches the height of the main body portion of the first valve core. The number of second seals is the same as the number of second connecting ports. The second seal includes a second channel, the second channel communicates with the corresponding second connecting port. The second seal is sandwiched between a portion of the side surface of the second valve core and a portion of the wall surface of the second side wall portion. There is a gap between another portion of the side surface of the second valve core and another portion of the wall surface of the second side wall portion. Along the height direction of the control valve, there is a gap between the end face of the main body portion of the second valve core and the valve body.

4. The control valve according to claim 3, characterized in that, The first channel has seven channels, and the second channel has two channels. The first drive shaft includes a toothed portion, and the first drive member includes a first output gear, the first output gear having a toothed bore, at least a portion of the toothed portion being located within the toothed bore; The second drive shaft includes a connecting portion, at least a portion of the outer surface of the connecting portion including two non-arc surfaces disposed opposite each other and an arc surface located between the two non-arc surfaces. The second drive member includes a second output gear, the second output gear having a connecting hole. At least a portion of the hole wall of the connecting hole includes a non-arc wall disposed opposite each other and an arc wall located between the two non-arc walls. The non-arc wall and the non-arc surfaces are close to each other and disposed opposite each other. At least a portion of the connecting portion is located within the connecting hole.

5. The control valve according to any one of claims 1 to 4, characterized in that, The first limiting part is either a protruding structure or a groove structure, the first mating part is either a protruding structure or a groove structure, the second limiting part is either a protruding structure or a groove structure, and the second mating part is either a protruding structure or a groove structure. The protruding structure is embedded within the groove structure and is positioned in a limiting fit.

6. The control valve according to claim 5, characterized in that, The first limiting part is a first protruding structure, which protrudes from the bottom wall portion. The first mating part is a first groove structure, which extends from the surface of the first valve core toward the bottom wall portion toward the interior of the first valve core. The first protruding structure is embedded in the first groove structure. The second limiting part is a second protrusion structure, which protrudes from the bottom wall portion. The second mating part is a second groove structure, which extends from the surface of the second valve core toward the bottom wall portion toward the interior of the second valve core. The second protrusion structure is embedded in the second groove structure.

7. The control valve according to claim 6, characterized in that, The second protrusion structure and the second groove structure are in clearance fit, and the distance d1 between the outer wall surface of the second protrusion structure and the inner wall surface of the second groove structure satisfies: 0≤d1≤0.06mm.

8. The control valve according to claim 7, characterized in that, The first driving component includes a first motor and a first output gear driven by the first motor; the second driving component includes a second motor and a second output gear driven by the second motor; the valve body further includes a cover portion; at least a portion of the first valve core and at least a portion of the second valve core are located between the bottom wall portion and the cover portion; the cover portion has a first through hole and a second through hole; the first driving shaft passes through the first through hole and is driven by the first output gear; the second driving shaft passes through the second through hole and is driven by the second output gear. The first through hole is coaxially arranged with the first output gear and the first drive shaft, the second through hole is clearance-fitted with the second drive shaft, and the distance d2 between the hole wall forming the second through hole and the shaft surface of the second drive shaft corresponding to the position of the second through hole satisfies: 0≤d2≤0.05mm.

9. The control valve according to claim 8, characterized in that, The distance d3 between the midpoint of the second drive shaft on the surface opposite to the second valve core and the axis of the cavity wall of the first chamber satisfies: 0≤d3≤0.1mm.

10. The control valve according to claim 8, characterized in that, The housing of the drive assembly includes a lower housing with a third through hole. The second drive shaft passes through the second through hole and the third through hole and is connected to the second output gear for transmission. The control valve further includes a first oil seal and a second oil seal. The first oil seal and the second oil seal are both sleeved on the outer periphery of the second drive shaft. The first oil seal is sandwiched between the cover and the second drive shaft, and the second oil seal is sandwiched between the lower housing and the second drive shaft. The first oil seal and the second oil seal have a compression amount between them and the outer surface of the second drive shaft.

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