Rotary control valve and method of controlling the same

Abstract

The application provides a rotary control valve and a control method thereof, which comprises a valve body having a containing cavity, a communication hole and a plurality of flow-through holes in communication with each other; a valve core assembly rotatably arranged in the containing cavity and capable of controlling the communication state between the plurality of flow-through holes to switch the rotary control valve between a refrigeration state and a heating state; a driving assembly arranged on the valve body and in driving connection with the valve core assembly; a refrigeration inductor and a heating inductor both arranged on the valve body and in electrical connection with the driving assembly; and an inducted element arranged on the valve core assembly and having a rotation track, the rotation track comprising a first circular arc segment and a second circular arc segment in connection with each other, the refrigeration inductor and the heating inductor being located at two intersection points of the first circular arc segment and the second circular arc segment respectively, the rotary control valve being in the refrigeration state when the inducted element is in an inductive position of the refrigeration inductor, and the rotary control valve being in the heating state when the inducted element is in an inductive position of the heating inductor.

Description

Technical Field

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

[0002] A rotary control valve typically includes a valve body, a valve core, and a drive assembly. The valve body has a receiving cavity, within which the valve core is rotatably mounted. The drive assembly is mounted on the valve body and connected to the valve core to drive its rotation. When the rotary control valve is in operation, the valve core rotates to different positions, switching the valve between cooling and heating modes.

[0003] Existing rotary control valves typically include an anti-rotation assembly located between the valve core and the valve body. This assembly usually consists of an anti-rotation groove and an anti-rotation block. The anti-rotation groove is located on the end face of the valve core, while the anti-rotation block is mounted on the valve body and located within a receiving cavity. The anti-rotation block and groove engage to limit the rotation angle of the valve core. However, after prolonged use, the anti-rotation block may become damaged, or cracks may appear in the valve body and valve core assembly, affecting the operation of the rotary control valve. Summary of the Invention

[0004] This invention provides a rotary control valve and its control method to solve the problem in the prior art where the rotary control valve cannot operate normally due to damage to the anti-rotation block.

[0005] According to one aspect of the present invention, a rotary control valve is provided, comprising: a valve body having interconnected receiving cavities and a plurality of flow holes, the plurality of flow holes being disposed on a side wall of the valve body and respectively communicating with the receiving cavity; a valve core assembly, the rotary control valve having a cooling state and a heating state disposed opposite to each other, the valve core assembly being rotatably disposed within the receiving cavity, the valve core assembly being capable of controlling the communication state between the plurality of flow holes to switch the rotary control valve between the cooling state and the heating state; a drive assembly disposed on the valve body, the drive assembly having a drive end being drively connected to the valve core assembly, the drive assembly driving the valve core assembly to rotate within the receiving cavity via the drive end; a cooling sensing element and a heating sensing element. Both the cooling and heating sensors are mounted on the valve body and are spaced apart circumferentially along the valve body. The cooling and heating sensors are electrically connected to the drive assembly. The sensing element is rotatably mounted within the receiving cavity and rotates synchronously with the valve core assembly. The cooling and heating sensors are located on the same circumference and are separated by a first and a second arc segment. The arc length of the first arc segment is shorter than that of the second arc segment. When the sensing element is in the sensing position of the cooling sensor, the rotary control valve is in cooling mode; when the sensing element is in the sensing position of the heating sensor, the rotary control valve is in heating mode.

[0006] By applying the technical solution of this invention, the cooling sensor, the heating sensor, and the sensed component, in conjunction with the drive assembly, can control the rotational position of the valve core assembly, thereby controlling the connectivity of multiple flow holes. Compared with the conventional method of controlling the rotational position of the valve core assembly through an anti-rotation component, this method avoids contact between components, thus preventing damage and ensuring the stability of the rotary control valve operation. Specifically, when the valve core assembly drives the sensed component to rotate to the sensing position of the cooling sensor, the cooling sensor senses the position information of the sensed component and transmits it to the drive assembly. The drive assembly stops rotating, and the rotary control valve is in cooling mode. When the valve core assembly drives the sensed component to rotate to the sensing position of the heating sensor, the heating sensor senses the position information of the sensed component and transmits it to the drive assembly. The drive assembly stops rotating, and the rotary control valve is in heating mode. Compared with traditional technologies, the valve body and valve core assembly do not transmit force through the anti-rotation component, thus avoiding cracks or damage to the valve body or valve core assembly after long-term use, ensuring the structural strength of the valve body and valve core assembly, and thus ensuring the normal operation of the rotary control valve.

[0007] Furthermore, the valve body has a first end and a second end, both of which are opposite each other. The cooling sensing element and the heating sensing element are both disposed on the end face of the first end, and the sensing element is disposed on the end face of the valve core assembly near the first end.

[0008] Furthermore, multiple flow holes are circumferentially spaced on the circumferential surface of the valve body, with a gap between adjacent flow holes. The cooling sensor is located in one of the gaps, and the heating sensor is located in the other adjacent gap.

[0009] Furthermore, the flow hole located between the cooling sensor and the heating sensor has a center line, and the cooling sensor and the heating sensor are symmetrically arranged along the center line.

[0010] Furthermore, the rotary control valve also includes a zeroing sensor, which is mounted on the valve body and electrically connected to the drive assembly. The zeroing sensor engages with the sensed component, and the cooling sensor, the zeroing sensor, and the heating sensor are distributed circumferentially along the valve body.

[0011] Furthermore, the projection of the zeroing sensor in the axial direction is located on the first arc segment, and the distance between the zeroing sensor and the cooling sensor and the distance between the zeroing sensor and the heating sensor are equal.

[0012] According to another aspect of the present invention, a control method for a rotary control valve is provided. The control method is applicable to the rotary control valve described above. The control method includes: Step 1, starting the rotary control valve and obtaining the starting position of the sensing element of the rotary control valve, and determining whether the starting position is at the sensing position of the cooling sensing element or the heating sensing element of the rotary control valve; Step 2, if the starting position is at the sensing position of the cooling sensing element or the heating sensing element, controlling the valve core assembly and the sensing element of the rotary control valve to rotate through the drive assembly of the rotary control valve, and causing the sensing element to rotate within the projection area of ​​the first arc segment, so that the rotary control valve switches between a cooling state and a heating state.

[0013] Furthermore, the control method also includes: Step 3, if the starting position is not the sensing position of the cooling sensor or the heating sensor, the sensing element is driven to rotate by the drive assembly. When the sensing element rotates to the sensing position of the cooling sensor or the heating sensor, it is determined whether the sensing position is the target position. If the sensing position is the target position, the drive assembly stops working; if the sensing position is not the target position, the drive assembly controls the valve core assembly and the sensing element to rotate in opposite directions so that the sensing element rotates to the next sensing position.

[0014] Furthermore, the control method also includes: step 4, if the starting position is not at the sensing position of the cooling sensor or the heating sensor, the sensing element is driven to rotate to the sensing position of the zeroing sensor of the rotary control valve through the drive assembly of the rotary control valve, and then the sensing element is driven to rotate to the target position through the drive assembly. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0016] Figure 1 A schematic diagram of the rotary control valve provided according to Embodiment 1 of the present invention is shown;

[0017] Figure 2 A cross-sectional view of a rotary control valve provided according to Embodiment 1 of the present invention is shown;

[0018] Figure 3 A schematic diagram of the valve body of a rotary control valve according to Embodiment 1 of the present invention is shown;

[0019] Figure 4 A schematic diagram of the valve core assembly and valve body of a rotary control valve according to Embodiment 1 of the present invention is shown.

[0020] Figure 5 A magnified schematic diagram of the local structure at point A in section 4 is shown;

[0021] Figure 6 A cross-sectional view of the valve body of a rotary control valve provided according to Embodiment 1 of the present invention is shown;

[0022] Figure 7 It shows Figure 6 A schematic diagram of the local structure at point B;

[0023] Figure 8 A top view of a rotary control valve provided according to Embodiment 1 of the present invention is shown;

[0024] Figure 9 A schematic diagram of the valve body of a rotary control valve provided according to Embodiment 1 of the present invention is shown.

[0025] The above figures include the following reference numerals:

[0026] 10. Valve body; 101. Receiving cavity; 102. Connecting hole; 103. Flow hole; 104. Connecting pipe;

[0027] 20. Valve core assembly;

[0028] 30. Drive assembly; 31. Drive motor; 32. Reduction mechanism; 33. Control mechanism;

[0029] 41. Cooling sensor; 42. Heating sensor; 43. Zeroing sensor;

[0030] 50. The object being sensed. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1 to 9As shown, Embodiment 1 of the present invention provides a rotary control valve, which includes a valve body 10, a valve core assembly 20, a drive assembly 30, a cooling sensor 41, a heating sensor 42, and a sensed element 50. The valve body 10 has an interconnected receiving cavity 101, a connecting hole 102, and multiple flow holes 103. The multiple flow holes 103 are disposed on the side wall of the valve body 10 and are each connected to a connecting pipe 104, which communicates with the receiving cavity 101. The rotary control valve has a cooling state and a heating state arranged opposite to each other. The valve core assembly 20 is rotatably disposed within the receiving cavity 101, and the valve core assembly 20 can control the communication state between the multiple flow holes 103, thereby switching the rotary control valve between the cooling state and the heating state. A drive assembly 30 is mounted on the valve body 10. The drive assembly 30 includes a drive motor 31, a reduction mechanism 32, and a control mechanism 33. The control mechanism 33 is electrically connected to the drive motor 31, and the drive motor 31 is electrically connected to the reduction mechanism 32. The reduction mechanism 32 has a drive end, which is drivenly connected to the valve core assembly 20. The drive assembly 30 drives the valve core assembly 20 to rotate within the receiving cavity 101 via the drive end. A cooling sensor 41 and a heating sensor 42 are both mounted on the valve body 10 and are spaced apart circumferentially along the valve body 10. The cooling sensor 41 and the heating sensor 42 are each electrically connected to the control mechanism 33. The sensing element 50 is rotatably disposed in the receiving cavity 101. The sensing element 50 rotates synchronously with the valve core assembly 20. The cooling sensing element 41 and the heating sensing element 42 are located on the same circumference, and there is a first arc segment and a second arc segment between the cooling sensing element 41 and the heating sensing element 42. The arc length of the first arc segment is less than the arc length of the second arc segment. When the sensing element 50 is in the sensing position of the cooling sensing element 41, the rotary control valve is in the cooling state; when the sensing element 50 is in the sensing position of the heating sensing element 42, the rotary control valve is in the heating state.

[0033] By applying the technical solution of this invention, the cooling sensing element 41, the heating sensing element 42, and the sensed element 50, in conjunction with the drive assembly 30, can control the rotational position of the valve core assembly 20, thereby controlling the communication state of the multiple flow holes 103. Compared with the conventional method of controlling the rotational position of the valve core assembly 20 through an anti-rotation component, this method avoids contact between the various components, thus preventing damage to the components due to contact and ensuring the stability of the rotary control valve operation. Specifically, when the valve core assembly 20 drives the sensed element 50 to rotate to the sensing position of the cooling sensor 41, the cooling sensor 41 senses the position information of the sensed element 50 and transmits this position information to the control mechanism 33 of the drive assembly 30. The control mechanism 33 controls the drive end of the drive assembly 30 to stop rotating, and the rotary control valve is in the cooling state. When the valve core assembly 20 drives the sensed element 50 to rotate to the sensing position of the heating sensor 42, the heating sensor 42 senses the position information of the sensed element 50 and transmits this position information to the control mechanism 33 of the drive assembly 30. The control mechanism 33 controls the drive end of the drive assembly 30 to stop rotating, and the rotary control valve is in the heating state. Compared with conventional technology, the valve body 10 and the valve core assembly 20 do not transmit force through the anti-rotation component, thus avoiding cracks or damage to the valve body 10 or the valve core assembly 20 after long-term use, ensuring the structural strength of the valve body 10 and the valve core assembly 20, and thus ensuring the normal operation of the rotary control valve. Furthermore, the arrangement of the cooling sensor 41, the heating sensor 42, and the sensed element 50 is simple in structure and easy to assemble with the valve body 10 and the valve core assembly 20.

[0034] like Figures 3 to 7 As shown, the valve body 10 has a first end and a second end opposite to each other. A cooling sensor 41 and a heating sensor 42 are both disposed on the end face of the first end. A connecting hole 102 is disposed on the end face of the first end and is used for the drive end of the drive assembly 30 to pass through. The sensed element 50 is disposed on the end face of the valve core assembly 20 near the first end. In this design, the cooling sensor 41 and the heating sensor 42 are distributed circumferentially around the valve body 10, and the distances between the cooling sensor 41 and the axis of the valve body 10, the distances between the heating sensor 42 and the axis of the valve body 10, and the distances between the sensed element 50 and the axis of the valve body 10 are all equal. This arrangement ensures that when the sensed element 50 rotates to the sensing position corresponding to the cooling sensor 41, the distance between the sensed element 50 and the cooling sensor 41 is sufficiently small. Similarly, it ensures that when the sensed element 50 rotates to the sensing position corresponding to the heating sensor 42, the distance between the sensed element 50 and the heating sensor 42 is sufficiently small. This ensures the accuracy of the sensing coordination between the cooling sensor 41 and the sensed component 50, and also ensures the accuracy of the sensing coordination between the heating sensor 42 and the sensed component 50.

[0035] In this design, four flow holes 103 are provided, circumferentially spaced on the circumferential surface of the valve body 10. There is a gap between adjacent flow holes 103. The cooling sensor 41 is located in one of these gaps, and the heating sensor 42 is located in the other adjacent gap. Specifically, the valve body 10 has a first mounting hole and a second mounting hole at its end, both communicating with the receiving cavity 101. The cooling sensor 41 passes through the first mounting hole, and the heating sensor 42 passes through the second mounting hole. A mounting groove is provided on the end face of the valve core assembly 20 near the first end of the valve body 10, where the sensor 50 is bonded. This arrangement ensures that the first and second mounting holes avoid contact with the flow holes 103, and consequently, that the cooling and heating sensors 41 and 42 also avoid contact with the flow holes 103. This ensures the rationality of the valve body 10's structural design and the smoothness of the rotary control valve's switching between cooling and heating states. Furthermore, this configuration ensures that the sensing element 50 and the flow hole 103 are aligned to avoid direct impact from the fluid on the sensing element 50 during both cooling and heating states, thus guaranteeing the secure connection between the sensing element 50 and the valve core assembly 20.

[0036] like Figure 2 and 8 As shown, the flow hole 103 located between the cooling sensor 41 and the heating sensor 42 has a center line, and the cooling sensor 41 and the heating sensor 42 are symmetrically arranged along the center line. Furthermore, the valve body 10 has a first center line, the projection of the cooling sensor 41 along its axial direction lies on the first center line, and the connecting pipes 104 located on both sides of the cooling sensor 41 are symmetrically arranged along the first center line. The valve body 10 also has a second center line, the projection of the heating sensor 42 along its axial direction lies on the second center line, and the connecting pipes 104 located on both sides of the heating sensor 42 are symmetrically arranged along the second center line. Specifically, Figure 8 In the diagram, dashed line O is the center line, dashed line O1 is the first center line, and dashed line O2 is the second center line. This configuration ensures smooth fluid flow in both cooling and heating modes, and also guarantees the precision of the rotary control valve in switching between these modes.

[0037] like Figure 9As shown, the rotary control valve also includes a zeroing sensor 43, which is mounted on the valve body 10. The zeroing sensor 43 is electrically connected to the control mechanism 33 of the drive assembly 30 and engages with the sensed element 50. The cooling sensor 41, the zeroing sensor 43, and the heating sensor 42 are distributed circumferentially around the valve body 10. After a sudden power failure and closure of the rotary control valve, the drive end of the drive assembly 30 will rotate the valve core assembly 20 due to inertia. The stopping position of the valve core assembly 20 is uncertain, therefore, the stopping position of the sensed element 50 is also uncertain. The zeroing sensor 43 ensures that each time the rotary control valve is started, the drive assembly 30 drives the valve core assembly 20 to rotate, which in turn drives the sensed element 50 to rotate until the sensed element 50 reaches the position of the zeroing sensor 43, and then rotates towards the target sensing position according to the cooling or heating requirements. Since the rotation direction of the valve core assembly 20 may be uncertain each time the rotary control valve is started, the initial stopping position of the sensed element 50 may differ from the target stopping position each time the rotary control valve is started. The zeroing sensor 43 ensures that the sensed element 50 is in a fixed position each time the rotary control valve is started. Then, it can be rotated to the sensing position corresponding to the cooling sensor 41 or the sensing position corresponding to the heating sensor 42 according to the usage requirements. This improves the smoothness of starting the rotary control valve.

[0038] Furthermore, the projection of the zeroing sensor 43 along the axial direction is located on the first arc segment, and the distance between the zeroing sensor 43 and the cooling sensor 41, as well as the distance between the zeroing sensor 43 and the heating sensor 42, are equal. This arrangement ensures that after the rotary control valve is activated, the initially stopped position of the sensed element 50 is on the first arc segment. Subsequently, when the sensed element 50 rotates again, its rotation stroke is half the arc length of the first arc segment. This arrangement minimizes the opening time of the rotary control valve.

[0039] Embodiment 2 of the present invention provides a control method for a rotary control valve. This control method is applicable to the rotary control valve described above. The control method includes: Step 1, starting the rotary control valve and obtaining the starting position of the sensing element 50 of the rotary control valve, and determining whether the starting position is at the sensing position of the cooling sensing element 41 or the heating sensing element 42 of the rotary control valve; Step 2, if the starting position is at the sensing position of the cooling sensing element 41 or the heating sensing element 42, controlling the valve core assembly 20 and the sensing element 50 of the rotary control valve to rotate through the driving assembly 30 of the rotary control valve, and causing the sensing element 50 to rotate within the projection area of ​​the first arc segment, so that the rotary control valve switches between the cooling state and the heating state.

[0040] By adopting the above technical solution, the time required for the rotary control valve to switch between cooling and heating states can be minimized, thereby ensuring the quickness of starting the rotary control valve and the quickness of switching between cooling and heating states.

[0041] Specifically, when the cooling sensor 41 and the heating sensor 42 are distributed in a clockwise direction, and it is necessary to keep the rotary control valve in a cooling state:

[0042] First, start the rotary control valve to obtain the start position of the sensing element 50, and determine whether the start position is at the sensing position of the cooling sensing element 41 or the heating sensing element 42.

[0043] If the starting position is at the sensing position of the cooling sensor 41, the driving component 30 stops driving, so that the sensed component 50 is at the sensing position corresponding to the cooling sensor 41.

[0044] If the starting position is at the sensing position of the heating sensor 42, the drive assembly 30 drives the valve core assembly 20 to rotate the sensed element 50 counterclockwise within the projection area of ​​the first arc segment until the sensed element 50 rotates to the sensing position of the cooling sensor 41. The drive assembly 30 then stops driving the valve core assembly 20 to rotate, so that the rotary control valve is in the cooling state. The principle of the method for the rotary control valve to heat when it is started after the rotary control valve is normally closed is the same as above.

[0045] Subsequently, when it is necessary to switch between heating and cooling states, the drive assembly 30 drives the sensing element 50 to rotate within the projection area of ​​the first arc segment, so that the rotary control valve switches between cooling and heating states.

[0046] Furthermore, the control method also includes: Step 3, if the starting position is not the sensing position of the cooling sensor 41 or the heating sensor 42, the driven component 30 drives the sensed component 50 to rotate. When the sensed component 50 rotates to the sensing position of the cooling sensor 41 or the heating sensor 42, it is determined whether the sensing position is the target position. If the sensing position is the target position, the driven component 30 stops working. If the sensing position is not the target position, the driven component 30 controls the valve core assembly 20 and the sensed component 50 to rotate in opposite directions so that the sensed component 50 rotates to the next sensing position.

[0047] During the use of the rotary control valve, abnormal closure situations such as sudden power outages may occur. In this case, the sensed element 50 may not stop at the sensing position of the cooling sensor 41 or the heating sensor 42. When restarting, the starting position of the sensed element 50 will not stop at the sensing position of the cooling sensor 41 or the heating sensor 42. The above settings can ensure that the rotary control valve can start normally under abnormal closure conditions.

[0048] Specifically, when the cooling sensor 41 and the heating sensor 42 are distributed clockwise, and the projection of the sensed element 50 in the axial direction is located on the first arc segment, and the rotary control valve is needed for cooling, the rotary control valve is activated. If the drive assembly 30 drives the sensed element 50 to rotate counterclockwise, the drive assembly 30 stops working when the sensed element 50 rotates to the sensing position of the cooling sensor 41. If the drive assembly 30 drives the sensed element 50 to rotate clockwise, the drive assembly 30 drives the sensed element 50 to rotate in the opposite direction when the sensed element 50 rotates to the sensing position of the heating sensor 42, until the sensed element 50 rotates to the sensing position of the cooling sensor 41. When the rotary control valve is abnormally closed, and the projection of the sensed element 50 in the axial direction is located on the first arc segment, the principle of the rotary control valve for heating is the same when it is activated.

[0049] Alternatively, when the cooling sensor 41 and the heating sensor 42 are distributed clockwise, and the projection of the sensed element 50 in the axial direction is located on the second arc segment, and the rotary control valve is needed for cooling, the rotary control valve is activated. If the drive assembly 30 drives the sensed element 50 to rotate clockwise, the drive assembly 30 stops working when the sensed element 50 rotates to the sensing position of the cooling sensor 41; if the drive assembly 30 drives the sensed element 50 to move counterclockwise, the drive assembly drives the sensed element 50 to rotate in the opposite direction when the sensed element 50 rotates to the sensing position of the heating sensor 42, until the sensed element rotates to the sensing position of the cooling sensor 41. When the rotary control valve is abnormally closed, and the projection of the sensed element 50 in the axial direction is located on the second arc segment, the principle of the rotary control valve for heating is the same when it is activated.

[0050] Furthermore, the control method also includes: Step 4, if the starting position is not at the sensing position of the cooling sensor 41 or the heating sensor 42, the driven component 30 of the rotary control valve drives the sensed element 50 to rotate to the sensing position of the zeroing sensor 43 of the rotary control valve, and then the driven component 30 drives the sensed element 50 to rotate to the target position. In the case of abnormal closure of the rotary control valve, after starting the rotary control valve, the driven component 30 first drives the sensed element 50 to rotate to the sensing position of the zeroing sensor 43, and then drives the sensed element 50 to rotate to the target position within the projection area of ​​the first arc segment. This setting ensures that after the rotary control valve is abnormally closed, when the rotary control valve is opened, the projection of the sensed element 50 in the axial direction is located on the first arc segment, thus ensuring that when the rotary control valve switches between cooling and heating states, the sensed element 50 rotates within the projection area of ​​the first arc segment, achieving rapid opening and reaching the target position.

[0051] Specifically, when the cooling sensor 41 and the heating sensor 42 are distributed clockwise, and the projection of the sensed element 50 in the axial direction is located on the first arc segment, and the rotary control valve is needed for cooling, the rotary control valve is activated. The drive assembly 30 drives the sensed element 50 to rotate to the sensing position of the zeroing sensor 43. Then, the drive assembly 30 rotates counterclockwise until the sensed element 50 rotates to the sensing position of the cooling sensor 41. When the rotary control valve is abnormally closed, and the projection of the sensed element 50 in the axial direction is located on the first arc segment, the principle of the rotary control valve for heating is the same when it is activated.

[0052] Alternatively, when the cooling sensor 41 and the heating sensor 42 are distributed clockwise, and the projection of the sensed element 50 in the axial direction is located on the second arc segment, and the rotary control valve is needed for cooling, the rotary control valve is activated. The drive assembly 30 drives the sensed element 50 to rotate to the sensing position of the zeroing sensor 43, and then the drive assembly 30 rotates counterclockwise until the sensed element 50 rotates to the sensing position of the cooling sensor 41. When the rotary control valve is abnormally closed, and the projection of the sensed element 50 in the axial direction is located on the first arc segment, the principle of the rotary control valve for heating is the same when it is activated.

[0053] Of course, in other embodiments, after a sudden power failure occurs in the rotary control valve, it can be restored to a certain default state after power is restored and then rotate towards the target sensing position according to the cooling or heating requirements. For example, the default state can be the cooling state. When the drive assembly 30 drives the valve core assembly 20 to rotate until the sensing element 50 is detected by the cooling sensing element 41, the drive assembly 30 stops driving and then selects to drive according to the cooling or heating requirements.

[0054] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0055] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0056] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0057] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0058] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rotary control valve, characterized in that, include: The valve body (10) has interconnected receiving cavities (101) and multiple flow holes (103). The multiple flow holes (103) are disposed on the side wall of the valve body (10) and are respectively connected to the receiving cavity (101). The valve core assembly (20) has a rotary control valve with a cooling state and a heating state arranged opposite to each other. The valve core assembly (20) is rotatably disposed in the receiving cavity (101). The valve core assembly (20) can control the communication state between the plurality of flow holes (103) so that the rotary control valve switches between the cooling state and the heating state. A drive assembly (30) is disposed on the valve body (10). The drive assembly (30) has a drive end, which is drivenly connected to the valve core assembly (20). The drive assembly (30) drives the valve core assembly (20) to rotate in the receiving cavity (101) through the drive end. A cooling sensor (41) and a heating sensor (42) are provided on the valve body (10), and the cooling sensor (41) and the heating sensor (42) are distributed at intervals along the circumference of the valve body (10). The cooling sensor (41) and the heating sensor (42) are electrically connected to the drive assembly (30). The sensing element (50) is rotatably disposed in the receiving cavity (101). The sensing element (50) rotates synchronously with the valve core assembly (20). The cooling sensing element (41) and the heating sensing element (42) are located on the same circumference, and there is a first arc segment and a second arc segment between the cooling sensing element (41) and the heating sensing element (42). The arc length of the first arc segment is less than the arc length of the second arc segment. When the sensing element (50) is in the sensing position of the cooling sensing element (41), the rotary control valve is in the cooling state; when the sensing element (50) is in the sensing position of the heating sensing element (42), the rotary control valve is in the heating state.

2. The rotary control valve according to claim 1, characterized in that, The valve body (10) has a first end and a second end opposite to each other. The cooling sensing element (41) and the heating sensing element (42) are both disposed on the end face of the first end. The sensing element (50) is disposed on the end face of the valve core assembly (20) near the first end.

3. The rotary control valve according to claim 2, characterized in that, A plurality of flow holes (103) are circumferentially spaced on the circumferential surface of the valve body (10), with a gap between two adjacent flow holes (103), the cooling sensor (41) is located in one of the gaps, and the heating sensor (42) is located in the other adjacent gap.

4. The rotary control valve according to claim 3, characterized in that, The flow hole (103) located between the cooling sensor (41) and the heating sensor (42) has a center line, and the cooling sensor (41) and the heating sensor (42) are symmetrically arranged along the center line.

5. The rotary control valve according to claim 1, characterized in that, The rotary control valve also includes a zeroing sensor (43), which is disposed on the valve body (10). The zeroing sensor (43) is electrically connected to the drive assembly (30) and is inductively coupled with the sensed element (50). The cooling sensor (41), the zeroing sensor (43), and the heating sensor (42) are distributed circumferentially along the valve body (10).

6. The rotary control valve according to claim 5, characterized in that, The projection of the zeroing sensor (43) in the axial direction is located on the first arc segment, and the distance between the zeroing sensor (43) and the cooling sensor (41) and the distance between the zeroing sensor (43) and the heating sensor (42) are equal.

7. A control method for a rotary control valve, characterized in that, The control method is applicable to the rotary control valve according to any one of claims 1 to 6, and the control method includes: Step 1: Start the rotary control valve and obtain the start position of the sensing element (50) of the rotary control valve, and determine whether the start position is at the sensing position of the cooling sensing element (41) or heating sensing element (42) of the rotary control valve. Step 2: If the starting position is at the sensing position of the cooling sensor (41) or the heating sensor (42), the valve core assembly (20) of the rotary control valve and the sensed element (50) are controlled to rotate by the drive assembly (30) of the rotary control valve, and the sensed element (50) rotates within the projection area of ​​the first arc segment, so that the rotary control valve switches between the cooling state and the heating state.

8. The control method for the rotary control valve according to claim 7, characterized in that, The control method further includes: Step 3: If the starting position is not the sensing position of the cooling sensor (41) or the heating sensor (42), the sensing element (50) is driven to rotate by the driving assembly (30). When the sensing element (50) rotates to the sensing position of the cooling sensor (41) or the heating sensor (42), it is determined whether the sensing position is the target position. If the sensing position is the target position, the driving assembly (30) stops working. If the sensing position is not the target position, the driving assembly (30) controls the valve core assembly (20) and the sensing element (50) to rotate in opposite directions so that the sensing element (50) rotates to the next sensing position.

9. The control method for the rotary control valve according to claim 7, characterized in that, The rotary control valve is the rotary control valve as described in claim 5 or 6, and the control method further includes: Step 4: If the starting position is not at the sensing position of the cooling sensor (41) or the heating sensor (42), the sensing element (50) is driven to rotate to the sensing position of the zeroing sensor (43) of the rotary control valve by the drive assembly (30), and then the sensing element (50) is driven to rotate to the target position by the drive assembly (30).

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