Electric valve

Abstract

The utility model provides an electric valve, and relates to the technical field of control valves. The electrically operated valve comprises a valve seat assembly, a driving assembly and a connecting piece, the valve seat assembly is provided with a mounting hole, the driving assembly is arranged in the mounting hole in a penetrating mode, and the connecting piece is arranged in the mounting hole, arranged outside the driving assembly in a sleeving mode and connected to the valve seat assembly. The connecting piece is arranged outside the driving assembly in a sleeving mode and connected to the valve seat assembly, so that the driving assembly is installed on the valve seat assembly through the connecting piece, and compared with an existing complex inserting structure, installation between the driving assembly and the valve seat assembly can be achieved only through one connecting piece, the structure is simplified, and installation is convenient. Meanwhile, the connecting piece plays a role in middle connection between the driving assembly and the valve seat assembly, and the stability and reliability of connection between the driving assembly and the valve seat assembly are improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of control valves, and in particular to an electric valve. Background Art

[0002] The existing electric valve includes a drive assembly and a valve seat assembly. When the electric valve is installed, the drive assembly and the valve seat assembly are plugged in through a plug-in structure to achieve installation and fixation between the drive assembly and the valve seat assembly. Since the electric valve needs to be additionally provided with a plug-in structure, the plug-in structure has a complex structure, a relatively high production cost, and a complex assembly process. Utility Model Content

[0003] The electric valve provided by the utility model simplifies the structure and reduces the production cost.

[0004] According to the first aspect of the utility model, an electric valve is provided, comprising: a valve seat assembly, a drive assembly and a connecting piece, wherein the valve seat assembly is provided with a mounting hole; the drive assembly is passed through the mounting hole; the connecting piece is arranged in the mounting hole, and the connecting piece is sleeved on the outside of the drive assembly and connected to the valve seat assembly.

[0005] In some embodiments, the outer wall of the connecting member is provided with an external thread, the inner wall of the mounting hole is provided with an internal thread, and the external thread and the internal thread are threadably matched.

[0006] In some embodiments, a mounting portion is provided on a side of the connecting member facing outside the mounting hole.

[0007] In some embodiments, the electric valve includes: a coil assembly and a sealing ring, wherein the coil assembly is disposed on the valve seat assembly, and the coil assembly is sleeved on the outside of the driving assembly; the sealing ring is disposed between the coil assembly and the connecting member.

[0008] In some embodiments, a sealing groove is provided between the coil assembly, the valve seat assembly and the connecting member, and the sealing ring is provided in the sealing groove.

[0009] In some embodiments, along the axial direction of the drive assembly and toward the sealing ring, the top surface of the connecting member is lower than the top surface of the valve seat assembly to form the sealing groove.

[0010] In some embodiments, a sealing plane is provided on a side of the coil assembly facing the valve seat assembly, and the sealing plane contacts the sealing ring and presses the sealing ring along the axial direction of the drive assembly.

[0011] In some embodiments, a positioning member is provided on the coil assembly or the driving assembly, and the positioning member is used to cooperate with the inner surface of the sealing ring to position the sealing ring.

[0012] In some embodiments, the coil assembly includes: a shell, a coil and a fixing portion, the positioning member is arranged on a side of the shell facing the valve seat assembly; the coil is arranged in the shell, and the driving assembly passes through the coil; the fixing portion is arranged in the shell, and the fixing portion is connected to the valve seat assembly; wherein the shell and the fixing portion are an integrally formed structure.

[0013] In some embodiments, the electric valve further includes a fixing member, the fixing portion is provided with a first fixing hole, the valve seat assembly is provided with a second fixing hole corresponding to the first fixing hole, and the fixing member is passed through the first fixing hole and the second fixing hole.

[0014] An embodiment of the utility model has the following advantages or beneficial effects:

[0015] In the electric valve provided by the embodiment of the utility model, the connecting piece is sleeved on the outside of the driving component and connected to the valve seat component, so that the driving component is installed on the valve seat component through the connecting piece. Compared with the existing complex plug-in structure, only one connecting piece is needed to realize the installation between the driving component and the valve seat component, which simplifies the structure and is convenient for installation. At the same time, the connecting piece plays the role of an intermediate connection between the driving component and the valve seat component, improving the stability and reliability of the connection between the driving component and the valve seat component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to better understand the utility model, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the utility model. In addition, related elements or components may have different settings as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each of the drawings. By describing its example embodiments in detail with reference to the drawings, the above and other features and advantages of the utility model will become more apparent.

[0017] in:

[0018] Figure 1 The structure of the electric valve of one embodiment of the utility model is shown. Figure 1 ;

[0019] Figure 2 Shown is a cross-sectional view of an electric valve according to an embodiment of the utility model;

[0020] Figure 3Shown is a schematic diagram of an electric valve display sealing groove according to an embodiment of the utility model;

[0021] Figure 4 The figure shows a schematic diagram of the structure of a connecting piece in an electric valve according to an embodiment of the utility model;

[0022] Figure 5 The figure shows the matching diagram of the electric valve sealing ring and the sealing groove in one embodiment of the utility model;

[0023] Figure 6 The structure of the coil assembly in the electric valve of the utility model is shown in FIG. Figure 1 ;

[0024] Figure 7 The structure of the coil assembly in the electric valve of the utility model is shown in FIG. Figure 2 ;

[0025] Figure 8 The structure of the electric valve of one embodiment of the utility model is shown. Figure 2 ;

[0026] Fig. 9 The structure of the electric valve of one embodiment of the utility model is shown. Figure 3 ;

[0027] Fig.10 Shown is a cross-sectional view of another form of an electric valve according to an embodiment of the utility model.

[0028] The reference numerals are described as follows:

[0029] 1. Valve seat assembly; 2. Drive assembly; 3. Valve core; 4. Connector; 5. Sealing ring; 6. Coil assembly; 7. Fixing parts;

[0030] 11. Inlet and outlet; 12. Communication port; 13. Communication cavity; 14. Mounting hole; 15. Second fixing hole; 101. Valve seat; 102. End cover;

[0031] 21. housing; 211. first housing; 212. second housing; 22. driving unit; 221. driving source; 2211. rotor; 2212. spindle; 222. reducer; 2221. gear rack; 2222. sun gear; 2223. planetary gear; 2224. fixed gear ring; 2225. movable gear ring; 23. output shaft;

[0032] 31. circulation channel; 40. sealing groove; 41. mounting portion;

[0033] 61. housing; 611. sealing plane; 612. positioning member;

[0034] 62. Coil; 63. Fixing portion; 631. First fixing hole. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the example embodiments of the utility model to clearly and completely describe the technical solutions in the example embodiments of the utility model. The example embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the utility model. Therefore, it should be understood that various modifications and changes can be made to the example embodiments without departing from the scope of protection of the utility model.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.

[0037] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0038] Further, in the description of the present invention, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limitations on the exemplary embodiments of the present invention. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) "upper", "lower", or "inner", "outer", it can not only be directly connected to the other (one or more) elements "upper", "lower", or "inner", "outer", but can also be indirectly connected to the other (one or more) elements "upper", "lower", "inner", "outer" through an intermediate element.

[0039] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0040] This embodiment provides an electric valve, such as Figure 1-Figure 2 As shown, the electric valve includes a valve seat assembly 1, a drive assembly 2, and a connecting member 4. The valve seat assembly 1 is provided with a mounting hole 14. The drive assembly 2 is passed through the mounting hole 14. The connecting member 4 is arranged in the mounting hole 14. The connecting member 4 is sleeved on the outside of the drive assembly 2 and connected to the valve seat assembly 1.

[0041] In the electric valve provided in this embodiment, the connector 4 is sleeved on the outside of the drive assembly 2 and connected to the valve seat assembly 1, so that the drive assembly 2 is installed on the valve seat assembly 1 through the connector 4. Compared with the existing complex plug-in structure, only one connector 4 is needed to realize the installation between the drive assembly 2 and the valve seat assembly 1, which simplifies the structure and facilitates installation. At the same time, the connector 4 plays the role of an intermediate connection between the drive assembly 2 and the valve seat assembly 1, improving the stability and reliability of the connection between the drive assembly 2 and the valve seat assembly 1.

[0042] Specifically, during installation, the drive assembly 2 can be inserted into the mounting hole 14, the connector 4 can be sleeved on the outside of the drive assembly 2, and then the connector 4 and the valve seat assembly 1 can be connected. Alternatively, the connector 4 can be sleeved on the outside of the drive assembly 2 to form an integral structure, and then the integral structure can be passed through the mounting hole 14, and the connector 4 and the valve seat assembly 1 can be connected. Of course, the installation methods for the valve seat assembly 1, the drive assembly 2 and the connector 4 in this embodiment include but are not limited to the above two methods, and can also be other installation methods, which can be adjusted according to actual production needs.

[0043] Among them, Figure 2-Figure 4 As shown, the connector 4 may be a nut, and the connector 4 is a circular ring structure. The inner wall of the connector 4 is in contact with the drive assembly 2, and the outer wall of the connector 4 is in contact with the mounting hole 14 of the valve seat assembly 1. The connector 4 and the drive assembly 2 may be clearance fit or interference fit. The embodiment does not limit the fit between the connector 4 and the drive assembly 2, and it can be adjusted according to actual production needs.

[0044] In one embodiment, the outer wall of the connecting member 4 is provided with an external thread, and the inner wall of the mounting hole 14 is provided with an internal thread, and the external thread and the internal thread are threadably matched.

[0045] During installation, after the connector 4 is sleeved on the drive assembly 2, the connector 4 is screwed, and the connector 4 and the mounting hole 14 are threadedly connected under the cooperation of the external thread and the internal thread, so that the drive assembly 2 is locked with the valve seat assembly 1 through the connector 4. Specifically, a step is formed on the drive assembly 2, and the connector 4 is rotated to press the step to press the drive assembly 2 onto the valve seat assembly 1. In this way, the connector 4 passes through the step on the drive assembly 2 to achieve locking between the drive assembly 2 and the valve seat assembly 1.

[0046] During disassembly, the connector 4 can be screwed in reverse to disengage the connector 4 from the valve seat assembly 1. The external thread and the internal thread cooperate with each other, which facilitates the installation and disassembly of the connector 4 and the drive assembly 2 relative to the valve seat assembly 1, thereby reducing maintenance costs.

[0047] In one embodiment, a mounting portion 41 (such as Figure 4 The mounting portion 41 provides an operating position for the mounting tool, so that the operator can easily screw the connector 4 during the assembly process.

[0048] Specifically, the mounting portion 41 can be a notch, groove, through hole or blind hole, etc. arranged on the connecting member 4. The mounting portion 41 can be arranged at the end, inner edge or outer edge, etc. of the connecting member 4. This embodiment does not limit the shape structure and setting position of the mounting portion 41, and it can be adjusted according to actual production conditions.

[0049] The number of the mounting portions 41 may be one or more, and the plurality of mounting portions 41 are arranged on the connector 4 along the circumferential direction of the drive assembly 2, so that the mounting tool can apply a uniform screwing force when operating the connector 4. For example, the number of the mounting portions 41 is four, and the four mounting portions 41 are evenly distributed along the circumference of the drive assembly 2, and the angle between two adjacent mounting portions 41 is 90°.

[0050] In one embodiment, Figure 2 As shown, the electric valve further includes a coil assembly 6, which is disposed on the valve seat assembly 1 and sleeved on the outside of the drive assembly 2. By controlling the on and off of the coil assembly 6, the coil assembly 6 generates a magnetic field, thereby controlling the movement of the drive assembly 2.

[0051] In one embodiment, Figure 2 , Figure 3 and Figure 5 As shown, the electric valve further includes a sealing ring 5, wherein the sealing ring 5 is disposed between the coil assembly 6 and the connector 4. The sealing ring 5 serves to isolate the coil assembly 6 from the valve seat assembly 1, thereby preventing moisture and the like from entering the coil assembly 6 and ensuring the reliability of the coil assembly 6.

[0052] A sealing groove 40 is provided between the coil assembly 6 , the valve seat assembly 1 and the connecting member 4 , and the sealing ring 5 is provided in the sealing groove 40 .

[0053] Among them, the sealing ring 5 can specifically be a sealing rubber ring or a sealing gasket. The sealing ring 5 is arranged in the sealing groove 40. The sealing groove 40 provides an accommodation space for the sealing ring 5. The sealing ring 5 serves to isolate the valve seat assembly 1 and the drive assembly 2, reduce the risk of water vapor and the like entering the drive assembly 2 and the valve seat assembly 1, and improve the sealing effect of the drive assembly 2 and the valve seat assembly 1.

[0054] In one embodiment, along the axial direction of the drive assembly 2 and toward the sealing ring 5 , the top surface of the connecting member 4 is lower than the top surface of the valve seat assembly 1 , forming a sealing groove 40 .

[0055] Specifically, the top surface of the valve seat assembly 1 is the notch of the sealing groove 40, the top surface of the connector 4 is the bottom of the sealing groove 40, and the inner wall of the mounting hole 14 is the inner wall of the sealing groove 40. The top surface of the connector 4 and the top surface of the valve seat assembly 1 are not flush, and there is a certain height difference between the top surface of the connector 4 and the top surface of the valve seat assembly 1, which is equivalent to the connector 4 being recessed relative to the valve seat assembly 1 in a direction away from the drive assembly 2 to form the sealing groove 40. The sealing groove 40 can be formed only by the relative height position between the connector 4 and the valve seat assembly 1, and there is no need to separately open grooves in the valve seat assembly 1 and the connector 4, thereby ensuring the structural strength of the valve group assembly and the connector 4, and the specific implementation structure is simple and the production cost is low.

[0056] The height of the sealing ring 5 is higher than the height of the sealing groove 40 , which improves the contact reliability between the coil assembly 6 and the sealing ring 5 and further improves the sealing effect.

[0057] In one embodiment, Figure 2 , Figure 6 and Figure 7 As shown, the coil assembly 6 includes a housing 61 and a coil 62. The coil 62 is arranged in the housing 61. The housing 61 provides a storage space for the coil 62. The housing 61 is connected to the valve seat assembly 1 to prevent the position of the coil assembly 6 from being offset relative to the valve seat assembly 1. The drive assembly 2 is inserted into the coil 62, and the movement of the drive assembly 2 is controlled by controlling the on and off of the coil 62.

[0058] In one embodiment, Figure 2 , Figure 6 and Figure 7 As shown, the coil assembly 6 further includes a fixing portion 63, which is disposed on the housing 61 and connected to the valve seat assembly 1. That is, the housing 61 is connected to the valve seat assembly 1 through the fixing portion 63, and the fixing portion 63 plays a role in installing and fixing the housing 61.

[0059] Specifically, Figure 2 , Figure 6 and Figure 7As shown, the electric valve further includes a fixing member 7, the fixing member 7 may be a screw, the fixing portion 63 is provided with a first fixing hole 631, the valve seat assembly 1 is provided with a second fixing hole 15 corresponding to the first fixing hole 631, and the fixing member 7 is passed through the first fixing hole 631 and the second fixing hole 15, and is used for fixing the fixing portion 63 and the valve seat assembly 1. After tightening the fixing member 7, the fixing portion 63 is pressed against the valve seat assembly 1, and the sealing ring 5 between the housing 61 and the valve seat assembly 1 is compressed, thereby ensuring that water vapor does not enter the interior of the coil 62 and the interior of the valve seat assembly 1.

[0060] The housing 61 and the fixing portion 63 are an integrally formed structure.

[0061] Specifically, the housing 61 and the fixing portion 63 are integrally formed by injection molding, which saves time for separate production and assembly of parts, thereby reducing production costs.

[0062] In one embodiment, the housing 61 is a hollow cylindrical structure, a coil frame is disposed inside the housing 61, the coil 62 is wound around the coil frame, and the coil frame provides a winding position for the coil 62. A center hole is disposed at the center of the coil frame, and along the axial direction of the driving component 2, the top end of the driving component 2 is penetrated through the center hole.

[0063] In one embodiment, Figure 2 , Figure 6 and Figure 7 As shown, a sealing plane 611 is provided on the side of the coil assembly 6 facing the valve seat assembly 1 , and the sealing plane 611 contacts the sealing ring 5 and presses the sealing ring 5 along the axial direction of the drive assembly 2 .

[0064] Since the coil 62 of the coil assembly 6 is sleeved on the drive assembly 2, the shell 61 is in contact with the valve seat assembly 1, and the position where the shell 61 of the coil assembly 6 contacts the sealing ring 5 on the side facing the valve seat assembly 1 is the sealing plane 611, which ensures the contact reliability between the shell 61 and the sealing ring 5, thereby improving the sealing effect of the coil assembly 6.

[0065] It can be understood that, along the axial direction of the driving assembly 2, the bottom surface of the sealing ring 5 is in contact with the connecting piece 4, that is, the bottom surface of the sealing ring 5 is in contact with the bottom of the sealing groove 40, the top surface of the sealing ring 5 is in contact with the sealing plane 611, and the peripheral surface of the sealing ring 5 is in contact with the mounting hole 14 of the valve seat assembly 1. At this time, a sealing ring 5 can simultaneously ensure the sealing performance of the valve seat assembly 1 and the coil assembly 6.

[0066] In one embodiment, Figure 2 , Figure 6 , Figure 7 and Fig.10As shown, the coil assembly 6 or the driving assembly 2 is provided with a positioning member 612, which is used to cooperate with the inner surface of the sealing ring 5 to position the sealing ring 5. The positioning member 612 can be used to position the sealing ring 5 to prevent the sealing ring 5 from moving.

[0067] For example, the positioning member 612 is convexly arranged on the side of the housing 61 of the coil assembly 6 facing the valve seat assembly 1, that is, the positioning member 612 extends along the bottom end surface of the housing 61 toward the side of the valve seat assembly 1 to form a boss structure, and the sealing ring 5 can be sleeved on the outer peripheral surface of the boss structure to limit the sealing ring 5 and ensure the reliability of the position of the sealing ring 5 relative to the coil assembly 6. This embodiment does not limit the position and extension direction of the positioning member 612 set on the housing 61 and the driving assembly 2, and can be adjusted according to actual production conditions.

[0068] In one embodiment, Figure 2 As shown, the valve seat assembly 1 is provided with an inlet and outlet 11, a communication cavity 13 and a plurality of communication ports 12. The inlet and outlet 11 is connected to the communication cavity 13, and the communication port 12 is connected to the communication cavity 13. The drive assembly 2 includes a housing 21, a drive unit 22 and an output shaft 23. The housing 21 is arranged in the valve seat assembly 1, a drive source 221 is penetrated through the housing 21, and the output shaft 23 is arranged in the housing 21 and is transmission-connected to the drive unit 22. The reversing valve also includes a valve core 3, the valve core 3 is arranged in the communication cavity 13, the valve core 3 is provided with a circulation channel 31, the circulation channel 31 is connected to the inlet and outlet 11, the valve core 3 is connected to the output shaft 23, and the drive unit 22 drives the valve core 3 to rotate relative to the communication cavity 13 through the output shaft 23, so that the circulation channel 31 is selectively connected to the communication port 12.

[0069] The driving part 22 of the driving assembly 2 drives the valve core 3 to rotate through the output shaft 23, so that the circulation channel 31 can be connected with at least one of the multiple communication ports 12. When it is necessary to switch the pipeline, it is only necessary to rotate the valve core 3 to connect the circulation channel 31 with the corresponding communication port 12. The reversing valve has a simple structure, is easy to install, has few structural components, can reduce the setting of pipelines, and is convenient for staff to disassemble, assemble and repair.

[0070] In one embodiment, the driving unit 22 includes a driving source 221, which can be a motor assembly. By setting the motor assembly, it can be started by achieving zero pressure difference. During operation, it will not drive the valve core 3 to rotate due to changes in pressure difference. The reversing valve can be used to replace multiple single-channel electric valves.

[0071] Specifically, the driving source 221 includes a rotor 2211 and a core shaft 2212. The coil assembly 6 is sleeved on the outside of the shell 21, and the rotor 2211 is arranged inside the shell 21. By controlling the power on and off of the coil assembly 6, the magnetic field of the coil assembly 6 changes, so that the rotor 2211 rotates relative to the shell 21. The core shaft 2212 is penetrated by the rotor 2211. The core shaft 2212 serves as the output end of the driving source 221. The driving source 221 can output rotational torque through the core shaft 2212.

[0072] The coil assembly 6, the rotor 2211 and the mandrel 2212 actually constitute the motor structure, which realizes the zero-pressure differential start of the reversing valve, and the motor structure generally has a self-locking structure inside, so that when the reversing valve is powered off, even if the pressure differential changes, it can still ensure that the position of the valve core 3 will not change. Specifically, a self-locking structure can be provided in the driving source 221 and the reducer 222. If a power outage occurs after the valve core 3 is switched in place, the valve core 3 will remain stationary in this position to realize the self-locking function. Therefore, the reversing valve provided in this embodiment can improve the structural integration and increase the reliability of the overall structure. It can be understood that a self-locking structure can be provided on the rotor 2211 of the driving source 221 to realize the self-locking function of the motor structure.

[0073] In one embodiment, Figure 2 As shown, the driving part 22 also includes a reducer 222, which is arranged in the shell 21, the driving source 221 is connected to the input end of the reducer 222, and the output end of the reducer 222 is connected to the output shaft 23. The driving source 221 drives the valve core 3 to rotate through the reducer 222 and the output shaft 23.

[0074] The reducer 222 is disposed between the driving source 221 and the output shaft 23. The reducer 222 can reduce the rotation speed of the driving source 221 and increase the torque of the driving source 221, so that the flow path can be switched more smoothly. It is understandable that a self-locking structure can also be provided on the reducer 222 to realize the self-locking function of the motor structure.

[0075] In one embodiment, the housing 21 includes a first housing 211 and a second housing 212, the second housing 212 is connected to the first housing 211, the rotor 2211 is disposed in the first housing 211, and the output shaft 23 is disposed in the second housing 212. Compared with the housing 21 of an integral structure, the first housing 211 and the second housing 212 are split structures, which facilitates the initial installation of the driving source 221 and the reducer 222.

[0076] In one embodiment, the reducer 222 includes a gear frame 2221, a sun gear 2222, a planetary gear 2223, a fixed gear ring 2224 and a movable gear ring 2225. The gear frame 2221 is disposed in the accommodation space, the mandrel 2212 of the driving source 221 is penetrated in the gear frame 2221, the sun gear 2222 is disposed in the accommodation space and sleeved on the outside of the mandrel 2212, and the fixed gear ring 2224 is disposed in the first housing 211 and fixed to the first housing 211. The planetary gear 2223 is rotatably connected to the gear frame 2221 and meshes with the sun gear 2222 and the fixed gear ring 2224. The movable gear ring 2225 is disposed in the second housing 212 and meshes with the planetary gear 2223, and the movable gear ring 2225 is connected to the output shaft 23. There are multiple planetary gears 2223 , which are arranged around the gear rack 2221 . The gear rack 2221 provides installation positions for the multiple planetary gears 2223 .

[0077] Specifically, the sun gear 2222 is fixed to the mandrel 2212, the fixed gear ring 2224 is fixed to the first housing 211, and the planetary gears 2223 are respectively meshed with the sun gear 2222, the fixed gear ring 2224 and the movable gear ring 2225. When the rotor 2211 rotates, the rotor 2211 drives the mandrel 2212 and the sun gear 2222 on the mandrel 2212 to rotate, the sun gear 2222 drives the planetary gears 2223 to rotate and revolve around the mandrel 2212, the planetary gears 2223 drives the movable gear ring 2225 to rotate, and the movable gear ring 2225 is connected to the valve core 3 through the output shaft 23, driving the valve core 3 to rotate. The drive assembly 2 is used in a rotary switching valve, and the drive assembly 2 drives the valve core 3 to rotate to switch the flow channel.

[0078] In one embodiment, Figure 2 , Figure 8-Figure 9 As shown, the valve seat assembly 1 includes a valve seat 101 and an end cover 102, a plurality of communication ports 12 are arranged at annular intervals on the plane of the valve seat 101 facing the valve core 3, an inlet and outlet 11 is arranged at one end of the end cover 102 away from the valve core 3, the valve seat 101 and the end cover 102 are detachably connected, and the valve core 3 is arranged in a communication cavity 13 formed by the valve seat 101 and the end cover 102. The valve seat 101 and the end cover 102 can be connected and fixed by fasteners. Specifically, the end faces of the valve seat 101 and the end cover 102 can be provided with a plurality of connection through holes, and the plurality of connection through holes are arranged at annular intervals. The fasteners are penetrated in the corresponding connection through holes of the valve seat 101 and the end cover 102 to connect and fix the valve seat 101 and the end cover 102, so as to facilitate the installation and maintenance of the valve core 3.

[0079] Specifically, the number of the communication ports 12 is three, and the three communication ports 12 are the first communication port 12a, the second communication port 12b, and the third communication port 12c. The valve seat 101 is provided with a first refrigerant channel, a second refrigerant channel, and a third refrigerant channel, one end of the first refrigerant channel is located on the side wall of the valve body, and the other end of the first refrigerant channel forms the first communication port 12a, one end of the second refrigerant channel and one end of the third refrigerant channel are both provided on the side wall of the valve seat 101, the other end of the second refrigerant channel forms the second communication port 12b, and the other end of the third refrigerant channel forms the third communication port 12c.

[0080] The specific process of the reversing valve when switching is as follows: the second end of the circulation channel 31 is communicated with the first communication port 12a, the first communication port 12a is communicated with the inlet and outlet 11 through the circulation channel 31, the second communication port 12b is communicated with the third communication port 12c through the communication chamber 13, the low-temperature and low-pressure refrigerant is introduced into the circulation channel 31, the inlet and outlet 11 is a low-pressure outlet, the first communication port 12a is a low-pressure inlet, the high-temperature and high-pressure refrigerant is introduced into the communication chamber 13, the second communication port 12b is a high-pressure outlet, and the third communication port 12c is a high-pressure inlet; the driving source 221 drives the valve core 3 through the reducer 222 Rotate counterclockwise, and the second end of the circulation channel 31 can be connected with both the first communicating port 12a and the second communicating port 12b; continue to rotate the valve core 3, and the second end of the circulation channel 31 is connected with the second communicating port 12b. At this time, the second communicating port 12b is connected with the inlet and outlet 11 through the circulation channel 31, and the first communicating port 12a is connected with the third communicating port 12c through the communicating cavity 13. At this time, the inlet and outlet 11 is a low-pressure outlet, the second communicating port 12b is a low-pressure inlet, the first communicating port 12a is a high-pressure outlet, and the third communicating port 12c is a high-pressure inlet, thereby realizing valve body reversal.

[0081] It should be noted that the electric valve shown in the drawings and described in this specification is only an example of the principle of the present invention. It should be clearly understood by those skilled in the art that the principle of the present invention is not limited to any details or any components of the device shown in the drawings or described in the specification.

[0082] It should be understood that the utility model does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The utility model can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned deformation forms and modified forms fall within the scope of the utility model. It should be understood that the utility model disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the utility model. The embodiments described in this specification illustrate the best known methods for implementing the utility model and will enable those skilled in the art to utilize the utility model.

[0083] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variation, use, or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and example embodiments are to be considered as exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

[0084] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. An electric valve, characterized in that: include: A valve seat assembly, wherein the valve seat assembly is provided with a mounting hole; A driving assembly, passing through the mounting hole; A connecting piece is arranged in the mounting hole, and the connecting piece is sleeved on the outside of the driving component and connected to the valve seat component.

2. The electric valve according to claim 1, characterized in that: The outer wall of the connecting piece is provided with an external thread, the inner wall of the mounting hole is provided with an internal thread, and the external thread and the internal thread are threadably matched.

3. The electric valve according to claim 1, characterized in that: A mounting portion is provided on one side of the connecting member facing outside the mounting hole.

4. The electric valve according to claim 1, characterized in that: The electric valve comprises: A coil assembly is arranged on the valve seat assembly, and the coil assembly is sleeved on the outside of the driving assembly; A sealing ring is arranged between the coil assembly and the connecting member.

5. The electric valve according to claim 4, characterized in that: A sealing groove is arranged between the coil assembly, the valve seat assembly and the connecting member, and the sealing ring is arranged in the sealing groove.

6. The electric valve according to claim 5, characterized in that: Along the axial direction of the drive assembly and in the direction toward the sealing ring, the top surface of the connecting member is lower than the top surface of the valve seat assembly to form the sealing groove.

7. The electric valve according to claim 6, characterized in that: A sealing plane is provided on one side of the coil assembly facing the valve seat assembly. The sealing plane contacts the sealing ring and presses the sealing ring along the axial direction of the drive assembly.

8. The electric valve according to claim 6, characterized in that: A positioning member is provided on the coil assembly or the driving assembly, and the positioning member is used to cooperate with the inner surface of the sealing ring to position the sealing ring.

9. The electric valve according to claim 8, characterized in that: The coil assembly comprises: A housing, wherein the positioning member is arranged on a side of the housing facing the valve seat assembly; A coil is disposed in the housing, and the driving component is passed through the coil; A fixing portion, disposed on the housing, the fixing portion being connected to the valve seat assembly; Wherein, the shell and the fixing part are an integrally formed structure.

10. The electric valve according to claim 9, characterized in that: The electric valve further comprises a fixing member, the fixing portion is provided with a first fixing hole, the valve seat assembly is provided with a second fixing hole corresponding to the first fixing hole, and the fixing member is passed through the first fixing hole and the second fixing hole.

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