Multi-way valve

Abstract

The utility model relates to the technical field of valves, in particular to a multi-way valve. The multi-way valve comprises a valve body part, a valve element part and a rotating shaft part. The valve body part is provided with a mounting cavity and a communicating cavity. The multi-way valve further comprises a sealing component, a bearing component and a nut component, a mounting opening is formed in the end, away from the communicating cavity, of the mounting cavity, the sealing component, the bearing component and the nut component are sequentially mounted in the mounting cavity through the mounting opening and all arranged on the periphery of the rotating shaft component in a sleeving mode, and the nut component is in threaded fit with the inner wall of the mounting cavity. The end of the nut component can abut against and be matched with the bearing component in the axial direction of the mounting cavity so as to prevent the bearing component and the sealing component from moving in the direction away from the communicating cavity. According to the multi-way valve, the problem that due to the fact that part of parts in an existing multi-way valve are pushed by refrigerant pressure to move, safety is poor is solved.

Description

Technical Field

[0001] This application relates to the field of valve technology, and in particular to a multi-way valve. Background Technology

[0002] Currently, multi-way valves are commonly used in air conditioning systems to control the switching between cooling and heating modes. A multi-way valve mainly consists of a drive unit, a rotating shaft, a valve body, and a valve core. The drive unit drives the valve core to rotate within the valve body via the rotating shaft, connecting the valve core with different interfaces on the valve body, thereby achieving the switching of flow paths.

[0003] In some multi-way valve structures, the valve body has a valve chamber and a mounting chamber. The mounting chamber houses components such as seals that mate with the rotating shaft. However, during operation, the high-pressure refrigerant in the valve chamber can push the seals away from the valve chamber, causing the seals to fail after movement. In some cases, the seals may even be pushed out of the mounting chamber and into the gear transmission chamber, significantly affecting the safety performance of the multi-way valve. Utility Model Content

[0004] Therefore, it is necessary to provide a multi-way valve to solve the problem that some components in existing multi-way valves may move due to refrigerant pressure, resulting in poor safety.

[0005] This application provides a multi-way valve, which includes a valve body component, a valve core component, and a rotating shaft component. The valve body component has a mounting cavity and a communicating cavity. High-pressure refrigerant flows through the communicating cavity. The valve core component is rotatably disposed within the communicating cavity. The rotating shaft component passes through the mounting cavity and is connected to the valve core component. The rotating shaft component is rotatable relative to the valve body component and drives the valve core component to rotate, so that the valve core component can switch the flow path of the multi-way valve. The multi-way valve also includes a sealing component, a bearing component, and a nut component. The mounting cavity has a mounting opening at one end away from the communicating cavity. The sealing component, the bearing component, and the nut component are sequentially installed in the mounting cavity through the mounting opening and are all sleeved on the outer periphery of the rotating shaft component. The nut component is threaded into the inner wall of the mounting cavity, and the end of the nut component can abut against the bearing component along the axial direction of the mounting cavity to prevent the bearing component and the sealing component from moving away from the communicating cavity.

[0006] In one embodiment, a first limiting structure is provided between the valve body component and the nut component, the first limiting structure restricting the movement of the nut component relative to the valve body component in a direction away from the communicating cavity.

[0007] In one embodiment, the valve body component is provided with a first riveting portion, which can deform in response to external force to form the first limiting structure and can be limited and engaged with the end face of the nut component away from the communicating cavity.

[0008] In one embodiment, the first limiting structure is configured as an adhesive that can penetrate into the gap between the nut component and the valve body component to bond and fix the nut component and the valve body component.

[0009] In one embodiment, a second limiting structure is provided between the outer wall of the bearing component and the inner wall of the mounting cavity, the second limiting structure restricting the movement of the bearing component relative to the valve body component toward the communicating cavity.

[0010] In one embodiment, the outer wall of the bearing component is provided with a first step, and the inner wall of the mounting cavity is provided with a second step. The first step and the second step abut against each other along the axial direction of the mounting cavity to form the second limiting structure.

[0011] In one embodiment, the bearing component includes a bearing housing and a first bearing, the first bearing being mounted in the bearing housing, and the inner ring of the first bearing being connected to the rotating shaft component, and the outer ring of the first bearing being connected to the bearing housing; wherein, along the axial direction of the mounting cavity, the end face of the nut component abuts against the end face of the first bearing.

[0012] In one embodiment, the nut component includes a nut body and a second bearing. The second bearing is installed in the nut body, and the inner ring of the second bearing is connected to the rotating shaft component, while the outer ring of the second bearing is connected to the nut body. The nut body is provided with a second riveting portion, which is capable of deforming in response to external force to limit and engage with the end face of the second bearing away from the communicating cavity.

[0013] In one embodiment, the nut body is provided with a driving part, which is capable of responding to external force to drive the nut body to rotate, wherein the driving part is configured as a groove and / or a polygonal hole.

[0014] In one embodiment, the mounting cavity protrudes at one end near the communicating cavity to form a limiting portion, the bearing component and the limiting portion are spaced apart axially in the mounting cavity and together with the limiting portion form a mounting groove, and the sealing component is installed in the mounting groove.

[0015] In one embodiment, the sealing component includes a first seal and a second seal, the first seal being fitted around the outer periphery of the rotating shaft component, and the second seal being fitted around the outer periphery of the first seal.

[0016] In one embodiment, the valve body component has a D-port, an E-port, an S-port, and a C-port. The valve core component has a fluid channel. The D-port communicates with the connecting cavity. One end of the fluid channel is connected to the S-port, and the other end is rotatable around the axis of the rotating shaft component to communicate with either the E-port or the C-port. The valve body component also has a transmission cavity located on the side of the mounting cavity away from the connecting cavity. The multi-way valve further includes a drive component and a reduction component. The reduction component is located within the transmission cavity, and one end of the reduction component is connected to… The output end of the drive component is connected to the rotating shaft component, so that the drive component can drive the valve core component to rotate sequentially through the reduction component and the rotating shaft component; the multi-way valve has a cooling mode and a heating mode. When the multi-way valve is in the cooling mode, the S port and the E port are connected through the fluid channel, and the D port and the C port are connected through the connecting cavity; when the multi-way valve is in the heating mode, the S port and the C port are connected through the fluid channel, and the D port and the E port are connected through the connecting cavity.

[0017] Compared with the prior art, the multi-way valve provided in this application allows the nut component to achieve a reliable connection with the valve body component through threaded engagement. Thus, when high-pressure refrigerant applies force to the bearing component and sealing component in the mounting cavity, the nut component can stop against the bearing component, and therefore the axial force applied by the high-pressure refrigerant can be borne by the nut component. This effectively prevents the bearing component and sealing component from detaching from the mounting opening, greatly improving the safety of the multi-way valve. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a multi-way valve according to an embodiment of this application;

[0020] Figure 2 A cross-sectional view of a multi-way valve according to an embodiment of this application;

[0021] Figure 3 A cross-sectional view of a valve seat according to an embodiment provided in this application;

[0022] Figure 4 A schematic diagram of the first riveting portion of an embodiment provided in this application;

[0023] Figure 5 A schematic diagram of the second riveting portion according to an embodiment provided in this application;

[0024] Figure 6 A schematic diagram of the structure of a nut body according to an embodiment provided in this application;

[0025] Figure 7 for Figure 2 Sectional view at point AA.

[0026] The symbols in the diagram represent the following meanings:

[0027] 100. Multi-way valve; 10. Valve body component; 101. Connecting cavity; 102. Mounting cavity; 1021. Mounting opening; 1022. Mounting groove; 103. Transmission cavity; 104. First flow port; 104a. S flow port; 105. Second flow port; 105a. E flow port; 105b. C flow port; 106. Third flow port; 106a. D flow port; 11. First limiting structure; 111. First riveting part; 12. Second limiting structure; 13. Limiting part; 14. Valve seat; 15. Valve cover; 20. Valve core assembly; 201. Fluid passage; 30. Rotating shaft assembly; 40. Sealing component; 41. First seal; 42. Second seal; 50. Bearing assembly; 51. Bearing housing; 52. First bearing; 60. Nut assembly; 61. Nut body; 611. Second riveting part; 612. Drive part; 62. Second bearing; 70. Drive component; 80. Reduction component; 81. Sealing gasket; 90. Anti-rotation component; 901. Limiting groove. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0033] Currently, multi-way valves are commonly used in air conditioning systems to control the switching between cooling and heating modes. A multi-way valve mainly consists of a drive unit, a rotating shaft, a valve body, and a valve core. The drive unit drives the valve core to rotate within the valve body via the rotating shaft, connecting the valve core with different interfaces on the valve body, thereby achieving the switching of flow paths.

[0034] In some multi-way valve structures, the valve body has a valve chamber and a mounting chamber. The mounting chamber houses components such as seals that mate with the rotating shaft. However, during operation, the high-pressure refrigerant in the valve chamber can push the seals away from the valve chamber, causing the seals to fail after movement. In some cases, the seals may even be pushed out of the mounting chamber and into the gear transmission chamber, significantly affecting the safety performance of the multi-way valve.

[0035] Please see Figures 1-6 To address the issue of poor safety caused by the movement of some components within existing multi-way valves due to refrigerant pressure, this application provides a multi-way valve 100. The multi-way valve 100 includes a valve body component 10, a drive component 70, a reduction component 80, a valve core component 20, and a rotating shaft component 30. The valve body component 10 has a transmission cavity 103, a mounting cavity 102, and a connecting cavity 101. The transmission cavity 103 is located on the side of the mounting cavity 102 away from the connecting cavity 101. The valve core component 20 is rotatably disposed within the connecting cavity 101. The rotating shaft component 30 passes through the mounting cavity 102 and is connected to the valve core component 20. The rotating shaft component 30 can rotate relative to the valve body component 10 and drive the valve core component 20 to rotate, enabling the valve core component 20 to switch the flow path of the multi-way valve 100. The reduction gear 80 is installed inside the transmission cavity 103, with one end connected to the output end of the drive component 70 and the other end connected to the rotating shaft component 30, so that the drive component 70 can drive the valve core component 20 to rotate sequentially through the reduction gear 80 and the rotating shaft component 30. The reduction gear 80 can be formed by multiple gears meshing together to increase the driving torque output by the drive component 70, thereby enabling the valve core component 20 to quickly switch between the cooling and heating modes of the multi-way valve 100.

[0036] Specifically, the valve body component 10 is provided with a first flow port 104 and a plurality of second flow ports 105, and the valve core component 20 is constructed with a fluid channel 201. One end of the fluid channel 201 is connected to the first flow port 104, and the other end can rotate relative to the valve body component 10, thereby connecting with different second flow ports 105 to realize the switching of the flow path. Here, the valve body component 10 may include a valve seat 14 and a valve cover 15 that are separately arranged. The mounting cavity 102, the transmission cavity 103 and the plurality of second flow ports 105 are opened on the valve seat 14, the first flow port 104 is provided on the valve cover 15, and the valve seat 14 and the valve cover 15 surround to form a communicating cavity 101 to facilitate the installation of the valve core component 20.

[0037] Taking the multi-way valve 100 of this application as a four-way valve as an example, that is, in this embodiment, there are two second flow ports 105, which are defined as E flow port 105a and C flow port 105b respectively. The valve body component 10 is also provided with a third flow port 106, which can be defined as D flow port 106a, and the first flow port 104 can be defined as S flow port 104a. Among them, asFigure 1 , Figure 2 and Figure 7 As shown, the axes of flow ports D 106a, E 105a and C 105b are all perpendicular to the axis of flow port S 104a, and flow ports D 106a, E 105a and C 105b are sequentially arranged on three adjacent side walls of valve body component 10 along the circumference of valve body component 10.

[0038] As is easily understood, one end of the fluid passage 201 within the valve core component 20 is connected to the S-port 104a, and the other end can rotate around the axis of the rotating shaft component 30 under the drive of the drive component 70, the reduction component 80, and the rotating shaft component 30, to communicate with the E-port 105a or the C-port 105b. The multi-way valve 100 has a cooling mode and a heating mode. When the multi-way valve 100 is in cooling mode, the S-port 104a and the E-port 105a are connected through the fluid passage 201, and the D-port 106a and the C-port 105b are connected through the connecting cavity 101. When the multi-way valve 100 is in heating mode, the S-port 104a and the C-port 105b are connected through the fluid passage 201, and the D-port 106a and the E-port 105a are connected through the connecting cavity 101.

[0039] High-pressure refrigerant flows through port D 106a. Since port D 106a is always connected to the connecting cavity 101, high-pressure refrigerant also flows through the connecting cavity 101. Low-pressure refrigerant flows through port S 104a. Since port S 104a is always connected to the fluid channel 201, low-pressure refrigerant also flows through the fluid channel 201. The connecting cavity 101 and the fluid channel 201 are separated by the valve core component 20, ensuring that the high-pressure and low-pressure refrigerants do not cross-contaminate, thus effectively guaranteeing the safety of the multi-way valve 100.

[0040] Please see Figure 2 and Figure 3 The multi-way valve 100 also includes a sealing component 40, a bearing component 50, and a nut component 60. The mounting cavity 102 has a mounting opening 1021 at its end away from the communicating cavity 101. The sealing component 40, bearing component 50, and nut component 60 are sequentially installed within the mounting cavity 102 through the mounting opening 1021, and are all fitted around the outer periphery of the rotating shaft component 30. Here, the bearing component 50 facilitates the rotation of the rotating shaft component 30 and improves its coaxiality, while the sealing component 40 seals the gap between the inner wall of the mounting cavity 102 and the rotating shaft component 30 to prevent leakage.

[0041] Furthermore, in this embodiment, the nut component 60 is threaded into the inner wall of the mounting cavity 102, and the end of the nut component 60 can abut against the bearing component 50 along the axial direction of the mounting cavity 102 to prevent the bearing component 50 and the sealing component 40 from moving away from the communicating cavity 101. It is understood that the nut component 60 can achieve a reliable connection with the valve body component 10 through the threaded engagement. Thus, when high-pressure refrigerant applies force to the bearing component 50 and the sealing component 40 within the mounting cavity 102, the nut component 60 can stop against the bearing component 50, thereby bearing the axial force applied by the high-pressure refrigerant. This effectively prevents the bearing component 50 and the sealing component 40 from detaching from the mounting opening 1021, greatly improving the safety of the multi-way valve 100.

[0042] To further enhance the fit between the nut component 60 and the valve body component 10, in one embodiment, a first limiting structure 11 is provided between the valve body component 10 and the nut component 60. The first limiting structure 11 restricts the movement of the nut component 60 relative to the valve body component 10 in a direction away from the communicating cavity 101. This reduces the possibility of the nut component 60 being lifted by the high-pressure refrigerant and moving or falling off under high pressure, effectively improving the installation stability of the nut component 60.

[0043] Specifically, in one embodiment, such as Figure 4 As shown, the valve body component 10 is provided with a first riveting portion 111. The first riveting portion 111 can deform in response to external force to form a first limiting structure 11, and can be limited and engaged with the end face of the nut component 60 away from the communicating cavity 101. It is easy to understand that the structure of the first riveting portion 111 is simple, which is conducive to the riveting process, and can achieve reliable limiting of the nut component 60, preventing the nut component 60 from loosening during vibration.

[0044] Here, the first riveting portion 111 can be configured as a columnar protrusion, and there are two of them, respectively located on opposite sides of the nut component 60 in the radial direction, to further improve the reliability of the limiting. Of course, the first riveting portion 111 can also extend in a ring shape, thereby covering the entire circumference of the nut component 60, and can be reasonably configured according to actual needs.

[0045] In another embodiment, the first limiting structure 11 can also be configured as an adhesive, which can penetrate into the gap between the nut component 60 and the valve body component 10 to bond and fix the nut component 60 and the valve body component 10. In this way, the strength of the fit between the nut component 60 and the valve body component 10 can be greatly improved, preventing the nut component 60 from detaching due to loosening of the threaded pair. Here, the adhesive can be an anaerobic adhesive or the like.

[0046] In one embodiment, such as Figure 3As shown, a second limiting structure 12 is provided between the outer wall of the bearing component 50 and the inner wall of the mounting cavity 102. The second limiting structure 12 restricts the movement of the bearing component 50 relative to the valve body component 10 towards the communicating cavity 101. With this configuration, when the bearing component 50 is installed into the mounting cavity 102, it can quickly and accurately reach the predetermined installation position, thereby greatly improving the convenience of the multi-way valve 100 assembly process.

[0047] Specifically, the outer wall of the bearing component 50 is provided with a first step, and the inner wall of the mounting cavity 102 is provided with a second step. The first step and the second step abut against each other along the axial direction of the mounting cavity 102 to form a second limiting structure 12. In this way, the structure of the second limiting structure 12 is simple, and the positional accuracy of the bearing component 50 during assembly can be improved and assembly errors can be reduced simply by the interaction of the first step and the second step.

[0048] Furthermore, in one embodiment, the bearing component 50 includes a bearing housing 51 and a first bearing 52. The first bearing 52 is installed within the bearing housing 51, and the inner ring of the first bearing 52 is connected to the rotating shaft component 30, while the outer ring of the first bearing 52 is connected to the bearing housing 51. This improves the stability of the first bearing 52 installation, and the bearing housing 51 isolates the first bearing 52 from the sealing component 40. This enhances the safety and service life of the sealing component 40 and prevents the sealing component 40 from intruding into the first bearing 52, thus avoiding the first bearing 52 from seizing.

[0049] Along the axial direction of the mounting cavity 102, the end face of the nut component 60 abuts against the end face of the first bearing 52. That is, in this embodiment, the two ends of the first bearing 52 along the axial direction can be limited by the nut component 60 and the bearing seat 51 respectively, preventing the first bearing 52 from moving and causing failure of the fit with the rotating shaft component 30. Simultaneously, when the nut component 60 is threadedly tightened to the valve body component 10, the end of the nut component 60 can engage with the second limiting structure 12, limiting the axial movement of both ends of the entire bearing component 50, preventing the bearing component 50 from shifting axially within the mounting cavity 102 due to vibration or other external forces, thereby effectively improving the installation stability of the bearing component 50.

[0050] In one embodiment, such as Figure 3As shown, a limiting part 13 protrudes from one end of the mounting cavity 102 near the communicating cavity 101. The bearing component 50 and the limiting part 13 are spaced apart axially in the mounting cavity 102 and together with the limiting part 13 form a mounting groove 1022. The sealing component 40 is installed in the mounting groove 1022. That is, in this embodiment, the mounting groove 1022 for installing the sealing component 40 is formed by assembling multiple components, avoiding mechanical processing such as milling on the sidewall of the mounting cavity 102, thereby simplifying the manufacturing process of the multi-way valve 100 and reducing the processing difficulty and cost of the multi-way valve 100.

[0051] Furthermore, in one embodiment, the sealing component 40 includes a first seal 41 and a second seal 42. The first seal 41 is sleeved on the outer periphery of the rotating shaft component 30, and the second seal 42 is sleeved on the outer periphery of the first seal 41. The cooperation of the first seal 41 and the second seal 42 enables multiple seals; even if one seal fails, the other seal can still provide a sealing effect, improving the safety and reliability of the multi-way valve 100 during operation.

[0052] Specifically, the second seal 42 can apply a force to the first seal 41 in the direction of the rotating shaft component 30, thereby improving the tightness of the contact between the first seal 41 and the rotating shaft component 30 and thus improving the sealing effect of the first seal 41. The second seal 42 can be made of PTFE material to further enhance the sealing performance.

[0053] In one embodiment, such as Figure 3 As shown, the nut component 60 includes a nut body 61 and a second bearing 62. The second bearing 62 is installed inside the nut body 61, and its inner ring is connected to the rotating shaft component 30, while its outer ring is connected to the nut body 61. The second bearing 62, in conjunction with the first bearing 52, provides dual support to the rotating shaft component 30. This effectively distributes the load and torque borne by the rotating shaft component 30 during rotation, reducing vibration and wear caused by uneven load distribution, and improving the smoothness of the rotation process and the overall structural stability of the rotating shaft component 30.

[0054] Among them, such as Figure 5 As shown, the nut body 61 is provided with a second riveting part 611. The second riveting part 611 can deform in response to external force to limit and engage with the end face of the second bearing 62 away from the communicating cavity 101. In this way, the connection between the second bearing 62 and the nut body 61 is more reliable. Furthermore, the structure of the second riveting part 611 is simple, which is conducive to riveting and can reliably limit the second bearing 62, preventing the second bearing 62 from loosening during vibration.

[0055] Here, the second riveting portion 611 can be configured as a columnar protrusion, and there are two of them, respectively located on opposite sides of the nut body 61 in the radial direction, to further improve the reliability of the limiting. Of course, the second riveting portion 611 can also extend in a ring shape, thereby covering the entire circumference of the nut body 61, and can be reasonably configured according to actual needs.

[0056] Since the sealing component 40 in this embodiment can completely seal the gap between the rotating shaft component 30 and the inner wall of the mounting cavity 102, the force of the high-pressure refrigerant can only be applied to the sealing component 40. The high-pressure force on the sealing component 40 can be borne by the nut body 61 through the bearing seat 51. This not only makes the installation of the sealing component 40 safer, but also prevents the first bearing 52 and the second bearing 62 from being pushed by the high-pressure force, ensuring that the first bearing 52 and the second bearing 62 can operate more stably and reliably. Both the first bearing 52 and the second bearing 62 can be configured as rolling bearings. Of course, in other embodiments, the first bearing 52 and the second bearing 62 can also be configured as thrust bearings, etc.

[0057] To facilitate the threaded engagement between the nut body 61 and the valve body component 10, in one embodiment, such as Figure 6 As shown, the nut body 61 is provided with a driving part 612, which can respond to external forces to drive the nut body 61 to rotate. This helps to reduce the driving difficulty of the nut body 61 and improve the installation efficiency of the overall structure.

[0058] Optionally, the drive unit 612 can be configured as a groove on the nut body 61. Of course, the drive unit 612 can also be configured as a polygonal hole on the nut body 61, as long as the rotation of the nut body 61 can be achieved. When the drive unit 612 is set as a polygonal hole, it is preferable to set it as an internal hexagonal hole, which has a simple structure and higher versatility.

[0059] In one embodiment, such as Figure 2 As shown, the multi-way valve 100 also includes a sealing gasket 81, which is installed inside the transmission cavity 103. When the reduction gear 80 is installed inside the transmission cavity 103, the reduction gear 80 can contact the sealing gasket 81, causing the sealing gasket 81 to deform under pressure, thereby achieving a sealing effect and preventing internal leakage. The sealing gasket 81 can be made of metal and has a ring-shaped structure.

[0060] To improve the accuracy of the rotation control of the valve core component 20 by the drive component 70 and the deceleration component 80, in one embodiment, an anti-rotation component 90 is provided between the valve body component 10 and the deceleration component 80. The anti-rotation component 90 can control the rotation angle of the valve core component 20, thereby ensuring that the fluid channel 201 on the valve core component 20 can be accurately connected to different second flow ports 105.

[0061] Specifically, the anti-rotation component 90 includes a limiting post (not shown) and a limiting groove 901. One of the limiting post and the limiting groove 901 is located at the output end of the deceleration component 80, and the other is located on the valve body component 10. For example, in this embodiment, as... Figure 4 and Figure 5 As shown, the limiting groove 901 is disposed on the valve body component 10, and the limiting post is disposed on the deceleration component 80. Thus, when the deceleration component 80 drives the valve core component 20 to rotate, the limiting post will also rotate with the deceleration component 80 and move along the limiting groove 901. The side walls at both ends of the limiting groove 901 can stop the movement of the limiting post, thereby limiting the output end of the deceleration component 80, preventing the valve core component 20 from rotating excessively, and ensuring that the fluid channel 201 can accurately connect with different second flow ports 105, ensuring the normal flow of refrigerant.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A multi-way valve, comprising a valve body component (10), a valve core component (20), and a rotating shaft component (30), wherein the valve body component (10) has a mounting cavity (102) and a communicating cavity (101), wherein a high-pressure refrigerant is flowing through the communicating cavity (101), the valve core component (20) is rotatably disposed in the communicating cavity (101), the rotating shaft component (30) passes through the mounting cavity (102) and is connected to the valve core component (20), and the rotating shaft component (30) is rotatable relative to the valve body component (10) and drives the valve core component (20) to rotate, so that the valve core component (20) can switch the flow path of the multi-way valve; Its features are, The multi-way valve also includes a sealing component (40), a bearing component (50), and a nut component (60). The mounting cavity (102) has a mounting opening (1021) at one end away from the connecting cavity (101). The sealing component (40), the bearing component (50), and the nut component (60) are sequentially installed in the mounting cavity (102) through the mounting opening (1021) and are all sleeved on the outer periphery of the rotating shaft component (30). The nut component (60) is threaded to the inner wall of the mounting cavity (102), and the end of the nut component (60) can abut against the bearing component (50) along the axial direction of the mounting cavity (102) to prevent the bearing component (50) and the sealing component (40) from moving away from the connecting cavity (101).

2. The multi-way valve according to claim 1, characterized in that, A first limiting structure (11) is provided between the valve body component (10) and the nut component (60), the first limiting structure (11) restricting the movement of the nut component (60) relative to the valve body component (10) in a direction away from the communicating cavity (101).

3. The multi-way valve according to claim 2, characterized in that, The valve body component (10) is provided with a first riveting part (111). The first riveting part (111) can deform in response to external force to form the first limiting structure (11) and can be limited and engaged with the end face of the nut component (60) away from the communicating cavity (101).

4. The multi-way valve according to claim 2, characterized in that, The first limiting structure (11) is configured as an adhesive that can penetrate into the gap between the nut component (60) and the valve body component (10) to bond and fix the nut component (60) and the valve body component (10).

5. The multi-way valve according to claim 1, characterized in that, A second limiting structure (12) is provided between the outer wall of the bearing component (50) and the inner wall of the mounting cavity (102), the second limiting structure (12) restricting the movement of the bearing component (50) relative to the valve body component (10) toward the direction of the connecting cavity (101).

6. The multi-way valve according to claim 5, characterized in that, The outer wall of the bearing component (50) is provided with a first step, and the inner wall of the mounting cavity (102) is provided with a second step. The first step and the second step abut against each other along the axial direction of the mounting cavity (102) to form the second limiting structure (12).

7. The multi-way valve according to claim 5, characterized in that, The bearing component (50) includes a bearing housing (51) and a first bearing (52). The first bearing (52) is installed in the bearing housing (51), and the inner ring of the first bearing (52) is connected to the rotating shaft component (30), and the outer ring of the first bearing (52) is connected to the bearing housing (51). Along the axial direction of the mounting cavity (102), the end face of the nut component (60) abuts against the end face of the first bearing (52).

8. The multi-way valve according to claim 1, characterized in that, The nut component (60) includes a nut body (61) and a second bearing (62). The second bearing (62) is installed inside the nut body (61), and the inner ring of the second bearing (62) is connected to the rotating shaft component (30), and the outer ring of the second bearing (62) is connected to the nut body (61). The nut body (61) is provided with a second riveting part (611), which can deform in response to external force to limit and cooperate with the end face of the second bearing (62) away from the communicating cavity (101).

9. The multi-way valve according to claim 8, characterized in that, The nut body (61) is provided with a driving part (612), which can respond to external force to drive the nut body (61) to rotate. The driving part (612) is configured as a groove and / or a polygonal hole.

10. The multi-way valve according to claim 1, characterized in that, The mounting cavity (102) protrudes at one end near the connecting cavity (101) to form a limiting part (13). The bearing component (50) and the limiting part (13) are spaced apart in the axial direction of the mounting cavity (102) and together with the limiting part (13) form a mounting groove (1022). The sealing component (40) is installed in the mounting groove (1022).

11. The multi-way valve according to claim 1, characterized in that, The sealing component (40) includes a first sealing element (41) and a second sealing element (42). The first sealing element (41) is sleeved on the outer periphery of the rotating shaft component (30), and the second sealing element (42) is sleeved on the outer periphery of the first sealing element (41).

12. The multi-way valve according to claim 1, characterized in that, The valve body component (10) has a D-port (106a), an E-port (105a), an S-port (104a), and a C-port (105b). The valve core component (20) has a fluid channel (201). The D-port (106a) is connected to the communication cavity (101). One end of the fluid channel (201) is connected to the S-port (104a), and the other end can rotate around the axis of the rotating shaft component (30) to connect with the E-port (105a) or the C-port (105b). The valve body component (10) is also provided with a transmission cavity (103). The transmission cavity (103) is located on the side of the mounting cavity (102) away from the communicating cavity (101). The multi-way valve also includes a drive component (70) and a deceleration component (80). The deceleration component (80) is located in the transmission cavity (103). One end of the deceleration component (80) is connected to the output end of the drive component (70), and the other end is connected to the rotating shaft component (30), so that the drive component (70) can drive the valve core component (20) to rotate in sequence through the deceleration component (80) and the rotating shaft component (30). The multi-way valve has a cooling mode and a heating mode. When the multi-way valve is in the cooling mode, the S port (104a) and the E port (105a) are connected through the fluid channel (201), and the D port (106a) and the C port (105b) are connected through the connecting cavity (101). When the multi-way valve is in the heating mode, the S-port (104a) and the C-port (105b) are connected through the fluid channel (201), and the D-port (106a) and the E-port (105a) are connected through the connecting cavity (101).

Images