Control valve

Abstract

The present invention discloses a control valve, which includes a valve body (41), a first valve element (51), a second valve element (52), a first drive shaft (53) and a second drive shaft (54), in which the first valve element (51) is operatively connected to a first drive member (20) by the first drive shaft (53) and the second valve element (52) is operatively connected to a second drive member (30) by the second drive shaft (54), the valve body (41) includes a first position limiting portion (412) and a second position limiting portion (413), and the main body of the first valve element (51) has a spherical structure. , the first valve body (51) is deflectable around the first position limiting portion (412), and an angle can be formed between the axis of the first valve body (51) and the axis of the chamber wall of the first chamber (AC1), and / or the body of the second valve body (52) has a spherical structure, and the second valve body (52) is deflectable around the second position limiting portion (413), and an angle can be formed between the axis of the second valve body (52) and the axis of the chamber wall of the second chamber (AC2), thus easily achieving stable engagement between the valve body and the corresponding drive member.

Description

Technical Field

[0001] This application is based on the priority rights of the following three Chinese patent applications, and all of their contents are incorporated herein by reference, that is, 1. A Chinese patent application filed with the China National Intellectual Property Administration on June 25, 2021, with the application number 202110712839.8 and the invention title "Control Valve", 2. A Chinese patent application filed with the China National Intellectual Property Administration on June 25, 2021, with the application number 202110712845.3 and the invention title "Control Valve", and 3. A Chinese patent application filed with the China National Intellectual Property Administration on June 25, 2021, with the application number 202110712846.8 and the invention title "Control Valve".

[0002] The present invention relates to the field of fluid control, and specifically, to a control valve.

Background Art

[0003] Generally, the valve body of a control valve rotates by the drive of a driving device to realize the fluid control of a plurality of flow paths by the control valve. When the control valve has two or more valve bodies, how to realize a stable fit between the valve body and the corresponding driving member has become an urgent problem to be solved.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The object of the present invention is to provide a control valve that facilitates a stable fit between the valve body and the corresponding driving member.

Means for Solving the Problems

[0005] The control valve according to an embodiment of the present invention includes a valve body and a valve element. The valve element includes a first valve element and a second valve element. 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 with the height direction of the control valve. At least a part of the first valve element is located in the first chamber and is rotatable. At least a part of the second valve element is located in the second chamber and is rotatable. The valve body includes a bottom wall portion located on one side in the axial direction of the valve element, a first position limiting portion fixedly connected to the bottom wall portion, and a second position limiting portion fixedly connected to the bottom wall portion. The first valve element includes a first fitting portion that is position-limited and fitted in the first position limiting portion. The second valve element includes a second fitting portion that is position-limited and fitted in the second position limiting portion. The main body of the first valve element has a spherical structure. The first valve element can be deflected around the first position limiting portion. The axis of the first valve element can have an angle with the axis of the chamber wall of the first chamber, and / or the main body of the second valve element has a spherical structure. The second valve element can be deflected around the second position limiting portion. The axis of the second valve element can have an angle with the axis of the chamber wall of the second chamber.

[0006] According to the control valve according to an embodiment of the present invention, the valve element of the control valve includes a first valve element and a second valve element. The valve body includes a first position limiting portion and a second position limiting portion. The first position limiting portion can be position-limited and fitted in the first fitting portion of the first valve element to realize position limitation for the first valve element. The second position limiting portion can be position-limited and fitted in the second fitting portion of the second valve element to realize position limitation for the second valve element. By making the main bodies of the first valve element and / or the second valve element have a spherical structure, the spherical valve element can be deflected around the corresponding position limiting portion. During the assembly process of the control valve, due to the deflection of the valve element, the transmission connection between the drive shaft and the corresponding drive member can be easily realized, and the instability between the valve element and the corresponding drive member can be easily reduced.

Brief Description of the Drawings

[0007]

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Mode for Carrying Out the Invention

[0008] Hereinafter, the features and examples of various aspects of the present invention will be described in detail. However, in order to make the object and advantages of the present invention clearer and more apparent, the present invention will be described in more detail below with reference to the drawings and examples. In the present text, for example, relative terms such as "first" and "second" are merely for distinguishing one member from another member having the same name, and do not necessarily require or imply the existence of any such actual relationship or order between these members.

[0009] As shown in FIGS. 1 to 4, an embodiment of the present invention provides a control valve 1, which includes a drive assembly 100, a valve body 41, and at least two valve bodies. The valve body includes a first valve body 51 and a second valve body 52. At least a part of the first valve body 51 and at least a part of the second valve body 52 are located within the valve body 41. The rotary valve body can connect or block the ports of the control valve 1 corresponding to the conduction chambers of the valve body. As an option, both the first valve body 51 and the second valve body 52 can be independently rotated by the drive of the drive assembly 100. The conduction chambers of the two valve bodies connect different ports of the control valve 1 to realize the fluid control function of the control valve 1. Furthermore, the arrangement direction of the first valve body 51 and the second valve body 52 intersects with the height direction of the control valve 1. As shown in FIGS. 1 and 3, the arrangement direction of the first valve body 51 and the second valve body 52 is 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 at least a part of which is located 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, and the other can be hermetically provided on the side wall portion by a welding process. In this embodiment, the bottom wall portion 411 is integrally formed with the side wall portion, and the cover portion 418 can be welded to the side wall portion. At least a part of the first valve body 51 and at least a part of the second valve body 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 hermetically provided between them and the side wall portion to prevent the leakage of fluid in 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. In FIG. 4, the drive assembly 100 is located on the side of the cover portion 418 away from the bottom wall portion 411. The drive assembly 100 can rotate the first valve body 51 and the second valve body 52 by driving. In the embodiment of the present invention, the number of valve bodies is two. When specifically implemented, the number of valve bodies can be set according to the needs of the user. For example, the number of valve bodies can be three, four, etc., and the present invention does not limit this.

[0010] Furthermore, referring to FIGS. 1 to 5, the control valve 1 has a first chamber AC1, a second chamber AC2, and a communication passage AC3 that communicates the first chamber AC1 and the second chamber AC2. The arrangement directions of the first chamber AC1 and the second chamber AC2 intersect the height direction of the control valve 1. For example, in FIG. 3, the arrangement directions of the first chamber AC1 and the second chamber AC2 are perpendicular to the height direction of the control valve 1. At least a part of the first valve body 51 is located in the first chamber AC1 and is rotatable by driving, and at least a part of the second valve body 52 is located in the second chamber AC2 and is rotatable by driving. As shown in FIG. 4, the side wall portion of the valve body 41 includes a first side wall portion 414 and a second side wall portion 415. The first side wall portion 414 is fixedly connected and sealed to the second side wall portion 415, or the first side wall portion 414 is integrally formed with the second side wall portion 415. The first side wall portion 414 is the peripheral wall of the first chamber AC1 or at least a part of the peripheral wall, and the second side wall portion 415 is the peripheral wall of the second chamber AC2 or at least a part of the peripheral wall. One end of the communication passage AC3 forms a communication opening in the first side wall portion 414, and the other end of the communication passage AC3 forms a communication opening in the second side wall portion 415, thereby communicating the first chamber AC1 and the second chamber AC2. Furthermore, referring to FIG. 4, the valve body 41 includes a connecting wall portion 419 that connects the first side wall portion 414 and the second side wall portion 415. And this connecting wall portion 419 may be located between the first side wall portion 414 and the second side wall portion 415. This connecting wall portion 419 is the peripheral wall of the communication passage AC3 or at least a part of the peripheral wall. As an option, 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. Along the direction from the first chamber AC1 to the second chamber AC2, the aperture diameter of the communication passage AC3 gradually increases, so that the communication passage AC3 has a large flow area, which is beneficial to reducing the flow resistance of the fluid.

[0011] Referring to FIGS. 4 and 5, the control valve 1 has at least five passages. In an embodiment of the present invention, the control valve 1 can have nine passages. The passages include a first passage 416 and a second passage 417. One end of the first passage 416 penetrates through the first side wall portion 414 to form a first communication port 4141 that communicates with the first chamber AC1. The other end of the first passage 416 penetrates through the outer surface of the control valve 1 to form a first port VP1. Thus, fluid can enter and exit the control valve 1 from the first port VP1. One end of the second passage 417 penetrates through the second side wall portion 415 to form a second communication port 4151 that communicates with the second chamber AC2. The other end of the second passage 417 penetrates through the outer surface of the control valve 1 to form a second port VP2. Thus, fluid can enter and exit the control valve 1 from the second port VP2. In the control valve 1 provided by the embodiment of the present invention, by rotating the first valve body 51 and / or the second valve body 52, at least two first communication ports 4141 can be conducted through the conduction chamber of the first valve body 20, realizing the conduction between a plurality of first ports VP1. Also, the conduction chamber of the first valve body 20 and the conduction chamber of the second valve body 52 conduct the first communication port 4141 and the second communication port 4151, realizing various conduction means between the first port VP1 and the second port VP2, and realizing the fluid control function of the control valve 1.

[0012] As shown in FIGS. 1, 5 to 8, the drive assembly 100 includes a housing 10, a first drive member 20, and a second drive member 30. The housing 10 has a housing chamber 101. The first drive member 20 and the second drive member 30 are located in the housing chamber 101. The first drive member 20 includes a first motor 21 and a first transmission gear group 22. The first motor 21 includes a first output shaft that can be transmission-connected to the first transmission gear group 22 by a worm structure. The first transmission gear group 22 includes a first output gear 223. The power output by the first motor 21 can be transmitted to the first output gear 223, facilitating the rotational drive of the first valve body 51. The second drive member 30 includes a second motor 31 and a second transmission gear group 32. The second motor 31 includes a second output shaft that can be transmission-connected to the second transmission gear group 32 by a worm structure. The second transmission gear group 32 includes a second output gear 323. The power output by the second motor 31 can be transmitted to the second output gear 323, facilitating the rotational drive of the second valve body 52. The transmission connection in this text may be fixedly connected by a welding process, a fastener, etc., or may be manufactured by integral molding, as long as the two members can be rotated synchronously.

[0013] In order to facilitate individually rotating and driving the first valve body 51 and the second valve body 52, further referring to FIGS. 1, 5 to 8, the control valve 1 includes a first drive shaft 53 and a second drive shaft 54. The first drive shaft 53 and the first valve body 51 are integrally formed or transmission-connected, the second drive shaft 54 and the second valve body 52 are integrally formed or transmission-connected, the first valve body 51 is transmission-connected to the first drive member 20 by the first drive shaft 53, and the second valve body 52 is transmission-connected to the second drive member 30 by the second drive shaft 54.

[0014] In the implementation of the present invention, since the first valve body 51, the second valve body 52, and the first drive member 20 and the second drive member 30 respectively transmission-connected to the two valve bodies are included, in order to reduce the unstable connection between the valve body and the corresponding drive member due to errors in the assembly or manufacturing process of the control valve, continuing to refer to FIGS. 1 to 10 and FIG. 16, the valve body 41 includes a bottom wall portion 411 located on the side away from the drive assembly 100 in the valve body, a first position limiting portion 412 located in the first chamber AC1 and fixedly connected to the bottom wall portion 411, and a second position limiting portion 413 located in the second chamber AC2 and fixedly connected to the bottom wall portion 411. The first valve body 51 includes a first fitting portion 510 that fits and engages with the first position limiting portion 412, the second valve body 52 includes a second fitting portion 520 that fits and engages with the second position limiting portion 413. As one option, one of the first position limiting portion 412 and the first fitting portion 510 is a protruding structure, and the other is a groove structure. One of the second position limiting portion 413 and the second fitting portion 520 is a protruding structure, and the other is a groove structure. The protruding structure is inserted into the groove structure, position-limited, and fitted. Furthermore, the main body of the first valve element 51 has a spherical structure, the first valve element 51 can be deflected around the first position limiting portion 412, and an angle can be formed between the axis of the first valve element 51 and the axis of the chamber wall of the first chamber AC1. When the first drive shaft 53 and the first valve element 51 are integrally formed, an angle may be formed between the axis of the first drive shaft 53 and the axis of the chamber wall of the first chamber AC1. And / or, the main body of the second valve element 52 has a spherical structure, the second valve element 52 can be deflected around the second position limiting portion 413, and an angle can be formed between the axis of the second valve element 52 and the axis of the chamber wall of the second chamber AC2. When the second drive shaft 54 and the second valve element 52 are integrally formed, an angle is formed between the axis of the second drive shaft 54 and the axis of the chamber wall of the second chamber AC2. By providing the valve element, it is possible to drive the drive shaft to deflect around the corresponding position limiting portion. In the process of assembling the control valve 1, the deflection of the valve element can easily realize the transmission connection between the drive shaft and the corresponding drive member, and can easily reduce the unstable fitting between the two valve elements and the two corresponding drive members due to the manufacturing or assembly error of the control valve 1, and can easily realize the stable rotation of at least two valve elements of the control valve 1, thereby improving the stability of the control valve 1.

[0015] The first drive shaft 53 and the first valve element 51 are integrally formed. For example, the first drive shaft 53 and the first valve element 51 can be integrally injection molded. The second drive shaft 54 and the second valve element 52 are provided separately and are in transmission connection. For example, in FIG. 5, the second valve element 52 has a drive shaft mounting hole, the second drive shaft 54 is inserted and press-fitted into the drive shaft mounting hole. The main body of the first valve element 51 has a columnar structure. The first valve element 51 and the first drive shaft 53 are provided with position limitation by the first position limiting portion 412, and the first valve element 51 and the first drive shaft 53 are coaxially arranged with the chamber wall of the first chamber AC1. The main body of the second valve element 52 has a spherical structure, the second valve element 52 can be driven to deflect the second drive shaft 54 around the second position limiting portion 413, and an angle is formed between the axis of the second drive shaft 54 and the axis of the second chamber AC2.

[0016] To realize the sealing performance of the control valve 1, as shown in FIGS. 1, 5 to 8, the control valve 1 includes a first sealing member 61 and a second sealing member 62. The first sealing member 61 includes first channels 611 that are equal in number to the first communication ports 4141 and communicate with each other. The first sealing member 61 is interposed between the first side wall portion 414 and the first valve body 51, and the first sealing member 61 is arranged coaxially with the first valve body 51. The height of the first sealing member 61 matches the height of the main body portion of the first valve body 51. The number of the second sealing members 62 is the same as the number of the second communication ports 4151. The second sealing members 62 include second channels 621 that communicate with the second communication ports 4151. The second sealing member 62 is interposed between a part of the side surface of the second valve body 52 and a part of the wall surface of the second side wall portion 415, and there is a gap between another part of the side surface of the second valve body 52 and another part of the wall surface of the second side wall portion 415. Along the height direction of the control valve 1, there is a gap between the end surface of the main body portion of the second valve body 52 and the valve body 41. The second valve body 52 is driven so that the second drive shaft 54 can be deflected around the second position limiting portion 413, and an angle is formed between the axis of the second drive shaft 54 and the axis of the second chamber AC2, which easily realizes the connection of the first valve body 51 and the second valve body 52 to the corresponding drive members by their respective corresponding drive shafts. It can be understood that the main body portion of the first valve body 51 has a configuration with a conduction chamber. For example, as shown in FIGS. 9-1 and 9-2, the main body portion of the first valve body 51 includes a top plate 516, a bottom plate 513, and a plurality of partition plates 514 located between the top plate 516 and the bottom plate 513. The top plate 516, the bottom plate 513, and the partition plates 514 define the conduction chamber of the first valve body 51. The main body portion of the second valve body 52 has a configuration with a conduction chamber. For example, as shown in FIG. 10, the main body portion of the second valve body 52 has an opposed 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 body 52 is located between the top surface 522 and the bottom surface 523.

[0017] As shown in FIGS. 7 to 15, the number of passages of the control valve 1 is nine, the number of the first passages 416 is seven, the number of the second passages 417 is two, the first drive shaft 53 includes a toothed portion 531, the first drive member 20 includes a first output gear 223 having a toothed hole 2231, the toothed portion 531 is inserted into the toothed hole 2231, and as shown in FIGS. 10 and 15, the second drive shaft 54 includes a connection portion 541. And at least a part of the outer surface of this connection portion 541 includes two non-arc-shaped surfaces S1 arranged opposite to each other and an arc-shaped surface S2 located between the two non-arc-shaped surfaces S1. The second drive member 30 includes a second output gear 323 having a connection hole 3231, and at least a part of the hole wall surface of the connection hole 3231 includes non-arc-shaped wall surfaces S3 arranged opposite to each other and an arc-shaped wall surface S4 located between the two non-arc-shaped wall surfaces S3. And the non-arc-shaped wall surface S3 and the non-arc-shaped surface S1 are close to and arranged opposite to each other, and the connection portion 541 is inserted into the connection hole 3231. With the above arrangement, synchronous rotation of the first valve body 51 and the second valve body 52 and their respective corresponding drive members can be easily realized, and angle deflection adjustment of the second drive shaft 54 can be easily realized.

[0018] Referring to FIGS. 7 to 11 and FIG. 16, in an embodiment of the present invention, the first position limiting portion 412 is a first protruding structure, the first protruding structure protrudes from the bottom wall portion 411, the first fitting portion 510 is a first groove structure, the first groove structure extends from the first valve body 51 into the interior of the first valve body 51 toward the surface of the bottom wall portion 411, the first protruding structure is fitted into the first groove structure, the second position limiting portion 413 is a second protruding structure, the second protruding structure protrudes from the bottom wall portion 411, the second fitting portion 520 is a second groove structure, and the second groove structure extends from the second valve body 52 into the interior of the second valve body 52 toward the surface of the bottom wall portion 411. And the second protruding structure is fitted into the second groove structure, the second protruding structure is clearance-fitted into the second groove structure, the tolerance between the outer wall surface of the second protruding structure and the inner wall surface of the second groove structure is ±0.06 mm. In this case, 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≦0.06 mm.

[0019] Based on this, referring to FIGS. 5, 16 and 17, when the valve body 41 includes the cover body portion 418, the cover body 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 transmission-connected to the first output gear 223, and the second drive shaft 54 passes through the second through hole 4182 and is transmission-connected to the second output gear 323. Furthermore, the first through hole 4181 is arranged coaxially with the first output gear 223 and the first drive shaft 53 respectively. A clearance fit is performed between the second through hole 4182 and the second drive shaft 54, and the tolerance between the hole wall of the second through hole 4182 and the shaft surface corresponding to the position of the second through hole 4182 on the second drive shaft 54 is ±0.05 mm, that is, the distance d2 between the hole wall of the second through hole 4182 and the shaft surface corresponding to the position of the second through hole 4182 on the second drive shaft 54 satisfies 0≦d2≦0.05 mm.

[0020] Based on the installation of the above structure, the main body portion of the second valve body 52 is a spherical structure. Due to the clearance structure between the second valve body 52 and the valve body 41 and the distances d1 and d2, the second valve body 52 can drive the second drive shaft 54 to deflect. The tolerance between the midpoint of the surface of the second drive shaft 54 away from the second valve body 52 to the axis of the chamber wall of the first chamber AC1 is ±0.1 mm, that is, the distance d3 between the midpoint of the surface of the second drive shaft 54 away from the second valve body 52 to the axis of the chamber wall of the first chamber AC1 satisfies 0≦d3≦0.1 mm. By the above installation, it is easy to ensure the assembly accuracy of the first valve body 51 and the second valve body 52, and the stability of the control valve can be improved.

[0021] Furthermore, referring to FIGS. 8, 13, 17 and 18, 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 body portion 418 and the third through hole 111 of the lower housing 11 and is transmission-connected to the second output gear 323. The control valve 1 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 provided on both sides in the thickness direction of the lid body portion 418. Both the first oil seal 63 and the second oil seal 64 are fitted and inserted on the outer peripheral side of the second drive shaft 54. The lid body portion 418 has a first protrusion 4183 provided toward the second valve body 52. The second oil seal 64 is interposed between the first protrusion 4183 and the second drive shaft 54. The lower housing 11 includes a bottom shell portion 113 and a second protrusion 112. And the bottom shell portion 113 forms or is at least a part of the wall portion of the accommodation chamber 101. At least a part of the second protrusion 112 is located on the side away from the second output gear 323 in the bottom shell portion 113. The first oil seal 63 is interposed between the bottom shell 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. By the above installation, on the one hand, the sealing performance of the control valve can be easily realized. On the other hand, by providing two oil seals and having a compression amount, the deflection of the second drive shaft 54 by the second valve body 52 can be easily realized.

[0022] When the control valve 1 has one valve body, the main body of this valve body has a spherical structure. The specific installation form of the valve body and the positional relationship between the valve body and the valve body and the housing connected to this spherical structure valve body are similar to the configuration of the control valve in any of the above embodiments. The present invention does not limit this. By the above installation, a stable connection between the valve body and the corresponding drive member can be realized by the deflection of the valve body due to the spherical structure. For example, the fitting accuracy between the valve body and the corresponding drive member can be improved, and good coaxiality can be realized.

[0023] Referring to FIGS. 19 to 23, the first valve body 51 includes a first conduction chamber 511 and a second conduction chamber 512 separated in an independent space. The first conduction chamber 511 is a groove structure that recesses from the outer peripheral surface of the first valve body 51 into the inside of the first valve body 51. In this case, the first conduction chamber 511 penetrates the outer peripheral surface of the first valve body 51 to form a first conduction port A1. The second conduction chamber 512 penetrates the first valve body 51. In this case, the second conduction chamber 512 penetrates the outer peripheral surface of the first valve body 51 to form two second conduction ports A2. The cross-sectional area of the first conduction port A1 is larger than the cross-sectional area of the second conduction port A2. By providing the first conduction chamber 511 and the second conduction chamber 512, different conduction modes between a plurality of valve ports can be realized when the first valve body 51 rotates. As shown in FIG. 22, the second valve body 52 includes a third conduction chamber 521 which is a groove structure that recesses from the outer peripheral surface of the second valve body 52 into the inside of the second valve body 52.

[0024] Based on this, by rotating the first valve body 51, at least one of the first conduction chamber 511 and the second conduction chamber 512, and at least two corresponding first ports VP1 can be conducted through the first communication port 4141. For example, when the first valve body 51 is rotated, at least two first ports VP1 corresponding to the first conduction chamber 511 can be conducted through the first conduction chamber 511 and the first communication port 4141, and / or when the first valve body 51 is rotated, at least two first ports VP1 corresponding to the second conduction chamber 512 can be conducted through the second conduction chamber 512 and the first communication port 4141. Also, by rotating the first valve body 51 and the second valve body 52, one of the first conduction chamber 511 and the second conduction chamber 512, the first communication port 4141, the communication passage AC3, the third conduction chamber 521, and the second communication port 4151 can conduct the corresponding first port VP1 and the second port VP2. In this case, the first valve body 51 can not only realize the function of conducting at least two first ports VP1, but also realize the function of conducting the first port VP1, the communication passage AC3, and the second port VP2. With the above installation, one control valve 1 can control a plurality of flow paths, and it is more convenient and compact during use.

[0025] To realize the rotation of the first valve body 51 and the second valve body 52, referring to FIGS. 19 to 23, the control valve 1 includes a first drive shaft 53 and a second drive shaft 54. The first drive shaft 53 and the first valve body 51 are integrally formed or transmission-connected to synchronously rotate the first drive shaft 53 and the first valve body 51. The second drive shaft 54 and the second valve body 52 are integrally formed or transmission-connected to synchronously rotate the second drive shaft 54 and the second valve body 52. When the first drive shaft 53 is driven to rotate the first valve body 51 to any position, one of the first conduction chamber 511 and the second conduction chamber 512 communicates with the communication passage AC3, so that the fluid flowing through the first valve body 51 can always flow into the second chamber AC2 through the communication passage AC3. The second drive shaft 54 can be driven to rotate the second valve body 52, whereby the third conduction chamber 521 conducts at least one second port VP2.

[0026] To easily realize the assembly of the control valve 1 and other members in the fluid control system and improve the integration degree of the control valve 1 and other members, each valve port of the control valve 1 is arranged on the same plane and the directions of each port are the same. The first port VP1 and the second port VP2 of the control valve 1 are both located on the same plane, and the assembly steps of the control valve 1 and other members can be relatively simplified. In other examples, the first port VP1 and the second port VP2 may be circumferentially arranged along the circumferential direction of their respective side wall portions.

[0027] To realize the function that the first valve body 51 conducts at least two first ports VP1 and conducts the first port VP1 and the communication passage AC3, referring to FIGS. 9-1, 9-2 and 21, the main body of the first valve body 51 has a columnar structure, and the first valve body 51 includes a top plate 516, a bottom plate 513 and a partition plate 514 located between the top plate 516 and the bottom plate 513. Moreover, these top plates 516 and bottom plates 513 are arranged in the height direction of the first valve body 51. One first conduction chamber 511 penetrates the outer peripheral surface of the first valve body 51 to form one first conduction port A1. One second conduction chamber 512 penetrates the outer peripheral surface of the first valve body 51 to form two second conduction ports A2. Along the circumferential direction of the first valve body 51, there is at least one first conduction port A1 between the two second conduction ports A2. Along the radial direction of the first valve body 51, the second conduction chamber 512 is closer to the axis of the first valve body 51 than the first conduction chamber 511. In FIGS. 9-1 and 20 to 21, the first valve body 51 has three first conduction chambers 511 and one second conduction chamber 512. Two of the three first conduction chambers 511 are provided adjacent to each other and are located on one side of the first valve body 51 along the radial direction of the first valve body 51. The second conduction chamber 512 and one first conduction chamber 511 are located on the other side of the first valve body 51 in the radial direction. Furthermore, in order to limit the rotation angle of the first valve body 51, the first valve body 51 includes a first stopper 515 protruding from the bottom plate 513 along the direction away from the top plate 516. Referring to FIG. 4, the valve body 41 includes a stopper 1901 protruding from the bottom wall portion of the valve body 41 and located within the first chamber AC1. The stopper 1901 and the first stopper 515 are fitted to each other to limit the rotation angle of the first valve body 51.

[0028] Furthermore, referring to FIGS. 20 and 24, the number of the first passages 416 is seven, the number of the first ports VP1 is seven, and correspondingly, the number of the first communication ports 4141 is seven. The communication hole passage AC3 penetrates the first side wall portion 414 to form a first orifice 131. The seven first communication ports 4141 and the first orifice 131 are evenly distributed along the circumferential direction of the first side wall portion 414. The number of the second passages 417 of the control valve is two, the number of the second ports VP2 is two. The communication hole passage AC3 penetrates the second side wall portion 415 to form a second orifice 132. Along the circumferential direction of the second side wall portion 415, the second orifice 132 is located between the two second ports VP2.

[0029] Referring further to FIGS. 20, 24 to 31, the seven first passages 416 respectively form seven first communication ports 4141 denoted as the first port VP1, the second port VP2, the third port VP3, the fourth port VP4, the sixth port VP6, the seventh port VP7, and the eighth port VP8. The first port VP1, the second port VP2, the third port VP3, the fourth port VP4, the first orifice 131, the sixth port VP6, the seventh port VP7, and the eighth port VP8 are sequentially and evenly arranged along the circumferential direction of the first valve body 51. In this case, as shown in FIG. 20, the angle formed by the connection line passing through the center of the first valve body 51 and the midpoint of two adjacent first communication ports 4141 may be 45 degrees. The angle between an adjacent first communication port 4141 and the first orifice 131 may also be 45 degrees. The two second passages 417 respectively form two second communication ports 4151 denoted as the fifth port VP5 and the ninth port VP9. The control valve includes at least one of eight operating modes. Accordingly, the first valve body 51 can rotate to any of eight positions. Hereinafter, various operating modes of the control valve will be introduced. In order to clearly and easily understand the conduction status of each valve port of the control valve, in FIGS. 24 to 31, the conduction status of each valve port is schematically drawn with a thick black line.

[0030] Referring to FIGS. 20 and 24, the control valve is in the first operating mode M1. The first valve body 51 rotates to the first position. The first port VP1 and the second port VP2 are conducted through one of the first conduction chambers 511. The third port VP3 and the fourth port VP4 are conducted through another first conduction chamber 511. The sixth port VP6 and the seventh port VP7 are conducted through yet another first conduction chamber 511. At least one of the fifth port VP5 and the ninth port VP9 and the eighth port VP8 are conducted through the second conduction chamber 512, the communication passage AC3, and the third conduction chamber 521. For example, FIG. 24 schematically shows the position of the second valve body 52 when the fifth port VP5 is conducted to the communication passage AC3 through the third conduction chamber. By rotating the second valve body 52, the ninth port VP9 can be conducted to the communication passage AC3, or the fifth port VP5 and the ninth port VP9 can be simultaneously conducted to the communication passage AC3. In the following operating modes, the conduction between the fifth port VP5 and the communication passage AC3 will be mainly used as an example for explanation.

[0031] Referring to FIGS. 20 and 25, the control valve is in the second operation mode M2. The first valve body 51 rotates to the second position, and the third port VP3 and the second port VP2 communicate with each other through one of the first conduction chambers 511. At least one of the fifth port VP5 and the ninth port VP9 and the fourth port VP4 communicate with each other through the other first conduction chamber 511, the communication hole passage AC3, and the third conduction chamber 521. The seventh port VP7 and the eighth port VP8 communicate with each other through yet another first conduction chamber 511. The sixth port VP6 and the first port VP1 communicate with each other through the second conduction chamber 512.

[0032] Referring to FIGS. 20 and 26, the control valve is in the third operation mode M3. The first valve body 51 rotates to the third position, and the first port VP1 and the eighth port VP8 communicate with each other through one of the first conduction chambers 511. The third port VP3 and the fourth port VP4 communicate with each other through the other first conduction chamber 511. At least one of the fifth port VP5 and the ninth port VP9 and the sixth port VP6 communicate with each other through yet another first conduction chamber 511, the communication hole passage AC3, and the third conduction chamber 521. The second port VP2 and the seventh port VP7 communicate with each other through the second conduction chamber 512.

[0033] Referring to FIGS. 20 and 27, the control valve is in the fourth operation mode M4. The first valve body 51 rotates to the fourth position, and the first port VP1 and the second port VP2 communicate with each other through one of the first conduction chambers 511. At least one of the fifth port VP5 and the ninth port VP9 and the fourth port VP4 communicate with each other through the other first conduction chamber 511, the communication hole passage AC3, and the third conduction chamber 521. The sixth port VP6 and the seventh port VP7 communicate with each other through yet another first conduction chamber 511. The third port VP3 and the eighth port VP8 communicate with each other through the second conduction chamber 512.

[0034] Referring to FIGS. 20 and 28, the control valve is in the fifth operating mode M5. The first valve body 51 rotates to the fifth position. The third port VP3 and the second port VP2 communicate with each other through one of the first communication chambers 511. The seventh port VP7 and the eighth port VP8 communicate with each other through the other first communication chamber 511. At least one of the fifth port VP5 and the ninth port VP9 and the sixth port VP6 communicate with each other through yet another first communication chamber 511, the communication passage AC3, and the third communication chamber 521. The first port VP1 and the fourth port VP4 communicate with each other through the second communication chamber 512.

[0035] Referring to FIGS. 20 and 29, the control valve is in the sixth operating mode M6. The first valve body 51 rotates to the sixth position. The first port VP1 and the eighth port VP8 communicate with each other through one of the first communication chambers 511. The third port VP3 and the fourth port VP4 communicate with each other through the other first communication chamber 511. The sixth port VP6 and the seventh port VP7 communicate with each other through yet another first communication chamber 511. At least one of the fifth port VP5 and the ninth port VP9 and the second port VP2 communicate with each other through the second communication chamber 512, the communication passage AC3, and the third communication chamber 521.

[0036] Referring to FIGS. 20 and 30, the control valve is in the seventh operating mode M7. The first valve body 51 rotates to the seventh position. The first port VP1 and the second port VP2 communicate with each other through one of the first communication chambers 511. The seventh port VP7 and the eighth port VP8 communicate with each other through the other first communication chamber 511. At least one of the fifth port VP5 and the ninth port VP9 and the fourth port VP4 communicate with each other through yet another first communication chamber 511, the communication passage AC3, and the third communication chamber 521. The sixth port VP6 and the third port VP3 communicate with each other through the second communication chamber 512. FIG. 31 schematically shows the position of the second valve body 52 when the ninth port VP9 communicates with the communication passage AC3 through the third communication chamber 521.

[0037] Referring to FIGS. 20 and 31, the control valve is in the eighth operating mode M8. The first valve body 51 rotates to the eighth position, and the first port VP1 and the eighth port VP8 are in communication through one of the first communication chambers 511. The second port VP2 and the third port VP3 are in communication through the other first communication chamber 511. At least one of the fifth port VP5 and the ninth port VP9 and the sixth port VP6 are in communication through yet another first communication chamber 511, the communication passage AC3, and the third communication chamber 521. The fourth port VP4 and the seventh port VP7 are in communication through the second communication chamber 512. FIG. 31 schematically shows the position of the second valve body 52 when the ninth port VP9 and the fifth port VP5 are both in communication with the communication passage AC3 through the third communication chamber 521.

[0038] In any of the eight operating modes of the control valve 1, the angle by which the first valve body 51 rotates between two adjacent modes differs by 45 degrees. Furthermore, as shown in FIGS. 24 to 29, the second valve body 52 rotates to the ninth position, and the fifth port VP5 and the communication passage AC3 are in communication through the third communication chamber 521. As shown in FIG. 30, the second valve body 52 rotates to the tenth position, and the ninth port VP9 and the communication passage AC3 are in communication through the third communication chamber 521. As shown in FIG. 31, the second valve body 52 rotates between the ninth position and the tenth position, and the fifth port VP5 and the ninth port VP9 are both in communication with the communication passage AC3 through the third communication chamber 521.

[0039] When the control valve has more valve ports, in order to realize the switching of the communication modes between the plurality of valve ports, the control valve can further include three valve bodies or more valve bodies.

[0040] Referring further to FIG. 32, the first communication port 4141 is arranged in the circumferential direction of the first side wall portion 414, and the second communication port 4151 is arranged in the circumferential direction of the second side wall portion 415. Along the height direction of the control valve 1, the center of the first communication port 4141 and the center of the second communication port 4151 are located at the same height of the control valve 1. That is, the plane passing through the center of the first communication port 4141 and the center of the second communication port 4151 is perpendicular to the height direction of the control valve 1. The distance between the center of the first communication port 4141 and the center of the second communication port 4151 and the surface of the bottom end of the valve body 41 can be set as h, and the specific numerical value of h can be set according to the needs of the user. With the above installation, each communication port can be arranged neatly, which is beneficial to reducing the size of the control valve 1 in the height direction.

[0041] As an option, the number of the first passages 416 included in the control valve 1 is 7, the number of the second passages 417 is 2, the 7 first passages 416 form 7 first ports VP1, the 2 second flow passages 102 form 2 second ports VP2. Referring to FIG. 33, the angle α formed by the center of two adjacent first ports VP1 and the axis of the first chamber AC1 is 45 degrees, the minimum distance m between the inner walls of two adjacent first ports VP1 is 6 mm or more, and since the cross-sectional area of the first port VP1 is equal to the cross-sectional area of the second port VP2, the first port VP1 and the second port VP2 have the same fluid flow area.

[0042] As shown in FIGS. 2 to 20, the valve body 41 includes a first connection portion 4101 fixedly connected or integrally formed with the first side wall portion 414. And a part of the first passage 416 is located in the first connection portion 4101. The cross-section of the first side wall portion 414 may be an annular structure with an opening. The inner surface of the cross-section of the first connection portion 4101 is a fan-shaped structure. The cross-section of the first connection portion 4101 is a cross-section obtained by cutting the valve body 41 along a direction perpendicular to the height direction of the valve body 41, and the arc length of the arc away from the first side wall portion 414 is larger than the arc length of the arc close to the first side wall portion 414. The valve body 41 includes a second connection portion 4102 fixedly connected or integrally formed with the second side wall portion 415. The second flow passage 102 penetrates through the second connection portion 4102, and the inner surface of the cross-section of the second connection portion 4102 is a rectangular structure.

[0043] From the above, according to the control valve 1 which is an embodiment of the present invention, the valve body of the control valve 1 includes a first valve body 51 and a second valve body 52. The first valve body 51 and the second valve body 52 are rotatable to conduct the port VP of the corresponding control valve 1, easily realizing various flow means of the control valve 1. The valve body 41 includes a first position limiting portion 412 and a second position limiting portion 413. The first position limiting portion 412 can be position-limited and fitted to the first fitting portion 510 of the first valve body 51 to realize position limitation for the first valve body 51. The second position limiting portion 413 can be position-limited and fitted to the second fitting portion 520 of the second valve body 52 to realize position limitation for the second valve body 52. By making the main bodies of the first valve body 51 and / or the second valve body 52 into a spherical structure, the valve body can be deflected around the corresponding position limiting portion. During the manufacturing or assembling process of the control valve 1, the transmission connection between the drive shaft and the corresponding drive member can be easily realized due to the deflection of the valve body, facilitating the reduction of unstable fitting between the two drive shafts and the two drive members due to errors in the manufacturing or assembly of the control valve 1, and it is easy to popularize and apply.

[0044] It should be noted that the above embodiments are merely for explaining the present invention. For example, definitions regarding directions such as "front", "rear", "left", "right", "up", "down", etc. do not limit the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, those skilled in the art can still correct, combine, or make equivalent substitutions to the present invention, and all improvements that do not deviate from the spirit and scope of the present invention also fall within the scope of the claims of this application.

Claims

1. A control valve including a valve body and a valve element, wherein the valve element includes a first valve element and a second valve element, the control valve has a first chamber and a second chamber communicating with each other, and the arrangement direction of the first chamber and the second chamber intersects with the height direction of the control valve. At least a part of the first valve element is located in the first chamber and is rotatable, and at least a part of the second valve element is located in the second chamber and is rotatable. The valve body includes a bottom wall portion located on one side in the axial direction of the valve element, a first position limiting portion fixedly connected to the bottom wall portion, and a second position limiting portion fixedly connected to the bottom wall portion. The first valve element includes a first fitting portion that is position-limited and fitted in the first position limiting portion, and the second valve element includes a second fitting portion that is position-limited and fitted in the second position limiting portion. The main body of the first valve element has a spherical structure, the first valve element can be deflected around the first position limiting portion, and the axis of the first valve element can have an angle with the axis of the chamber wall of the first chamber, and / or the main body of the second valve element has a spherical structure, the second valve element can be deflected around the second position limiting portion, and the axis of the second valve element is characterized in that it has an angle with the axis of the chamber wall of the second chamber. A control valve.

2. The control valve includes a drive assembly. 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 an accommodation chamber. The first drive member and the second drive member are located in the accommodation chamber. The control valve includes a first drive shaft and a second drive shaft. The first drive shaft is transmission-connected to the first drive member, and the first drive shaft and the first valve element are integrally formed or transmission-connected. The second drive shaft is transmission-connected to the second drive member, and the second drive shaft and the second valve element are integrally formed or transmission-connected. The control valve according to claim 1, characterized in that.

3. When only the main body of the second valve element has a spherical structure, the first drive shaft and the first valve element are integrally formed, the second drive shaft and the second valve element are provided separately and transmission-connected, the main body of the first valve element has a columnar structure, and the first valve element is provided with position limitation in the first position limiting portion. And the first valve element and the first drive shaft are coaxially arranged with the chamber wall of the first chamber. The main body of the second valve element has a spherical structure, the second valve element is deflectable around the second position limiting portion, and the control valve according to claim 2 is characterized in that an angle is provided between the axis of the second drive shaft and the axis of the second chamber.

4. The valve body includes a first side wall portion and a second side wall portion. The first side wall portion forms or is at least a part of the peripheral wall of the first chamber. The second side wall portion forms or is at least a part of the peripheral wall of the second chamber. The control valve has a passage including a first passage and a second passage. The first passage penetrates the first side wall portion to form a first communication port. The second passage penetrates the second side wall portion to form a second communication port. The control valve includes a first sealing member and a second sealing member. The number of the first sealing members is the same as that of the first communication ports and includes first holes communicating with the corresponding first communication ports. The first sealing member is interposed between the first side wall portion and the first valve element, and the first sealing member is coaxially arranged with the first valve element. The height of the first sealing member matches the height of the main body portion of the first valve element. The number of the second sealing members is the same as that of the second communication ports. The second sealing member includes second holes communicating with the corresponding second communication ports. The second sealing member is interposed between a part of the side surface of the second valve element and a part of the wall surface of the second side wall portion, and there is a gap between another part of the side surface of the second valve element and another part 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 surface of the main body portion of the second valve element and the valve body. The control valve according to claim 3 is characterized in that.

5. The first drive shaft includes a toothed portion, and the first drive member includes a first output gear having a toothed hole, and at least a part of the toothed portion is located in the toothed hole. The second drive shaft includes a connecting portion. At least a part of the outer surface of the connecting portion includes two oppositely arranged non-arc-shaped surfaces and an arc-shaped surface located between the two non-arc-shaped surfaces. The second drive member includes a second output gear having a connecting hole. At least a part of the hole wall surface of the connecting hole includes two oppositely arranged non-arc-shaped wall surfaces and an arc-shaped wall surface located between the two non-arc-shaped wall surfaces. The non-arc-shaped wall surface and the non-arc-shaped surface are close to each other and oppositely arranged, and at least a part of the connecting portion is located in the connecting hole. The control valve according to claim 4 is characterized in that.

6. The first position limiting part is one of a protruding structure and a groove structure, the first fitting part is the other of the protruding structure and the groove structure, the second position limiting part is one of the protruding structure and the groove structure, and the second fitting part is the other of the protruding structure and the groove structure. The control valve according to claim 2, wherein the protruding structure is inserted into the groove structure and is position-limited and fitted.

7. The first position limiting part is a first protruding structure, the first protruding structure protrudes from the bottom wall part, the first fitting part is a first groove structure, the first groove structure extends from the first valve body into the first valve body toward the surface of the bottom wall part, and the first protruding structure is inserted into the first groove structure. The control valve according to claim 6, wherein the second position limiting part is a second protruding structure, the second protruding structure protrudes from the bottom wall part, the second fitting part is a second groove structure, the second groove structure extends from the second valve body into the second valve body toward the surface of the bottom wall part, and the second protruding structure is inserted into the second groove structure.

8. The control valve according to claim 7, wherein the second protruding structure is clearance-fitted into the second groove structure, and 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 ≦ 0.06 mm.

9. The first driving member includes a first motor and a first output gear transmission-connected to the first motor, the second driving member includes a second motor and a second output gear transmission-connected to the second motor, the valve body includes a lid part, at least a part of the first valve body and at least a part of the second valve body are both located between the bottom wall part and the lid part, the lid part has a first through hole and a second through hole, the first driving shaft penetrates through the first through hole and is transmission-connected to the first output gear, and the second driving shaft penetrates through the second through hole and is transmission-connected to the second output gear. The control valve according to claim 8, wherein the first through hole is arranged coaxially with the first output gear and the first driving shaft respectively, clearance fitting is performed between the second through hole and the second driving shaft, and the distance d2 between the hole wall forming the second through hole and the shaft surface corresponding to the position of the second through hole on the second driving shaft satisfies 0 ≦ d2 ≦ 0.05 mm.

10. The distance d3 between the midpoint on the surface of the second drive shaft away from the second valve body and the axis of the chamber wall of the first chamber satisfies 0 ≦ d3 ≦ 0.1 mm. The control valve according to claim 9 is characterized in that.

11. The housing of the drive assembly includes a lower housing having a third through hole. The second drive shaft penetrates through the second through hole and the third through hole and is transmission-connected to the second output gear. The control valve includes a first oil seal and a second oil seal. Both the first oil seal and the second oil seal are inserted and fitted on the outer peripheral side of the second drive shaft. The first oil seal is interposed between the lid body portion and the second drive shaft. The second oil seal is interposed between the lower housing and the second drive shaft. The control valve according to claim 9 is characterized in that both the first oil seal and the second oil seal have a compression amount between them and the outer surface of the second drive shaft.

12. The first valve body includes a separated first conduction chamber and a second conduction chamber. The first conduction chamber is a groove structure that recesses from the outer peripheral surface of the first valve body into the first valve body. The second conduction chamber penetrates through the first valve body. The second valve body includes a third conduction chamber that is a groove structure recessed from the outer peripheral surface of the second valve body into the second valve body. The control valve includes a first side wall portion that forms at least a part of the wall portion of the first chamber and a second side wall portion that forms at least a part of the wall portion of the second chamber. The control valve has a first passage that penetrates through the first side wall portion to form a first communication port and a second passage that penetrates through the second side wall portion to form a second communication port. The valve body has a communication hole passage that communicates the first chamber and the second chamber. At least two of the first communication ports corresponding to at least one of the first conduction chamber and the second conduction chamber are conducted. The control valve according to any one of claims 1 to 5 and claims 7 to 11 is characterized in that one of the first conduction chamber and the second conduction chamber, the communication hole passage, and the third conduction chamber conduct the corresponding first communication port and the second communication port.

13. The number of the first passages is seven, the number of the first communication ports is seven, the communication hole passage penetrates through the first side wall portion to form a first orifice, and the seven first communication ports and the first orifice are evenly distributed along the circumferential direction of the first side wall portion. The number of the first communication chambers is three, and the number of the second communication chambers is one. Two of the three first communication chambers are provided adjacent to each other and located on one side of the first valve body along the radial direction of the first valve body. The second communication chamber and one of the first communication chambers are located on the other side of the first valve body in the radial direction. The seven first communication ports are respectively defined as a first port, a second port, a third port, a fourth port, a sixth port, a seventh port, and an eighth port. The first port, the second port, the third port, the fourth port, the first orifice, the sixth port, the seventh port, and the eighth port are sequentially arranged along the circumferential direction of the first side wall portion. The two second communication ports are respectively defined as a fifth port and a ninth port. The control valve includes at least any one of the following eight operation modes. In the first operation mode, the first valve body rotates to a first position, the first port and the second port communicate with each other through one of the first communication chambers, the third port and the fourth port communicate with each other through another one of the first communication chambers, the sixth port and the seventh port communicate with each other through yet another one of the first communication chambers, and at least one of the fifth port and the ninth port and the eighth port communicate with each other through the second communication chamber, the communication passage, and the third communication chamber. In the second operation mode, the first valve body rotates to a second position, the third port and the second port communicate with each other through one of the first communication chambers, at least one of the fifth port and the ninth port and the fourth port communicate with each other through another one of the first communication chambers, the communication passage, and the third communication chamber, the seventh port and the eighth port communicate with each other through yet another one of the first communication chambers, and the sixth port and the first port communicate with each other through the second communication chamber. In the third operation mode, the first valve body rotates to a third position, the first port and the eighth port communicate with each other through one of the first communication chambers, the third port and the fourth port communicate with each other through another one of the first communication chambers, at least one of the fifth port and the ninth port and the sixth port communicate with each other through yet another one of the first communication chambers, the communication passage, and the third communication chamber, and the second port and the seventh port communicate with each other through the second communication chamber. In the fourth operation mode, the first valve body rotates to the fourth position, the first port and the second port are in communication through one of the first communication chambers, at least one of the fifth port and the ninth port and the fourth port are in communication through another one of the first communication chambers, the communication hole passage, and the third communication chamber, the sixth port and the seventh port are in communication through yet another one of the first communication chambers, and the third port and the eighth port are in communication through the second communication chamber. In the fifth operation mode, the first valve body rotates to the fifth position, the third port and the second port are in communication through one of the first communication chambers, the seventh port and the eighth port are in communication through another one of the first communication chambers, at least one of the fifth port and the ninth port and the sixth port are in communication through yet another one of the first communication chambers, the communication hole passage, and the third communication chamber, and the first port and the fourth port are in communication through the second communication chamber. In the sixth operation mode, the first valve body rotates to the sixth position, the first port and the eighth port are in communication through one of the first communication chambers, the third port and the fourth port are in communication through another one of the first communication chambers, the sixth port and the seventh port are in communication through yet another one of the first communication chambers, and at least one of the fifth port and the ninth port and the second port are in communication through the second communication chamber, the communication hole passage, and the third communication chamber. In the seventh operation mode, the first valve body rotates to the seventh position, the first port and the second port are in communication through one of the first communication chambers, the seventh port and the eighth port are in communication through another one of the first communication chambers, at least one of the fifth port and the ninth port and the fourth port are in communication through yet another one of the first communication chambers, the communication hole passage, and the third communication chamber, and the sixth port and the third port are in communication through the second communication chamber. In the eighth operation mode, the first valve body rotates to the eighth position, the first port and the eighth port are in communication through one of the first communication chambers, the second port and the third port are in communication through another one of the first communication chambers, at least one of the fifth port and the ninth port and the sixth port are in communication through yet another one of the first communication chambers, the communication hole passage, and the third communication chamber, and the fourth port and the seventh port are in communication through the second communication chamber. The control valve according to claim 12, characterized in that.

14. In any one of the eight operating modes of the control valve, the second valve body rotates to the ninth position, the fifth port and the communication passage are in communication via the third communication chamber, the second valve body rotates to the tenth position, the ninth port and the communication passage are in communication via the third communication chamber, the second valve body rotates between the ninth position and the tenth position, and the fifth port and the ninth port are both in communication with the communication passage via the third communication chamber. The control valve according to claim 13, characterized in that.

15. Along the height direction of the control valve, one of the first communication ports is arranged on the first side wall portion, and one of the second communication ports is arranged on the second side wall portion. The valve body includes a first connection portion fixedly connected or integrally formed on the outer surface of the first side wall portion, and the first passage penetrates the first connection portion. The cross section perpendicular to the height direction of the first side wall portion in the first side wall portion has an annular structure with an opening, the inner surface of the cross section of the first connection portion has a fan-shaped structure, and the arc length of the arc away from the axial direction of the first side wall portion in the fan-shaped structure is larger than the arc length of the arc close to the axial direction of the first side wall portion. The control valve according to claim 12, characterized in that.

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