CN116951154A - Electronic expansion valve and refrigeration equipment - Google Patents

Abstract

The invention discloses an electronic expansion valve and refrigeration equipment, which relate to the field of valves. The electronic expansion valve includes a valve body assembly, a coil and an assembly. The coil includes a stator assembly and an assembly, and the stator assembly is sleeved on the outer periphery of the valve body assembly; The accessories include an annular body, a plurality of mating parts, and a connecting arm connecting the annular body and each mating part. The annular body is arranged around the outer periphery of the valve body assembly and is connected and fixed with the stator assembly. The plurality of mating parts are clamped with the valve body assembly. connect. The electronic expansion valve proposed by the present invention can realize the installation of the coil and the valve body assembly at any angle, has low assembly cost, and is easier to complete the assembly of the coil and the valve body assembly.

Description

Electronic expansion valve and refrigeration equipment

Technical field

The invention relates to the field of valves, and in particular to an electronic expansion valve and refrigeration equipment.

Background technique

In related technologies, the coil and valve body of the electronic expansion valve are basically fixed by welding. The fixing cost is high, the assembly is difficult, and it is inconvenient to install and disassemble. It is impossible to install the coil and valve body components from multiple angles. .

Contents of the invention

The main purpose of the present invention is to propose an electronic expansion valve, aiming to solve the problems in the prior art that the fixed connection method between the coil and the valve body of the electronic expansion valve is high in cost, complex in assembly, and inconvenient to install and disassemble.

In order to achieve the above objectives, the electronic expansion valve proposed by the present invention includes:

Valve body components;

A coil includes a stator assembly that is sleeved on the outer periphery of the valve body assembly;

Assembly part, the assembly part includes an annular body, a plurality of fitting parts and a connecting arm connecting the annular body and each fitting part, the annular body is arranged around the outer periphery of the valve body assembly and is connected with the The stator assembly is connected and fixed, and the plurality of matching parts are clamped and connected with the valve body assembly.

Optionally, the connecting arm and the annular body are arranged at an included angle.

Optionally, the cross section of the connecting arm along the axial direction of the annular body is a straight plate shape, an arc shape, a folding line shape, a corrugated shape, or a multi-section bending shape.

Optionally, a plurality of connecting portions are protruding from the inner edge of the annular body toward the center of the circle, and each connecting portion is connected to each connecting arm correspondingly.

Optionally, the circumferential width of the connecting arm is less than or equal to the circumferential width of the connecting portion;

The circumferential width of the connecting arm is less than or equal to the width of the fitting portion.

Optionally, one of the fitting portion and the peripheral wall of the valve body assembly is provided with a first protrusion, and the other is provided with a first positioning groove for the first protrusion to be inserted and positioned;

Alternatively, at least one of the fitting parts is provided with a first protrusion, and at least one of the fitting parts is provided with a first positioning groove;

The outer peripheral wall of the valve body assembly is provided with a first positioning groove corresponding to the position of the first protrusion, and the outer peripheral wall of the valve body assembly is provided with a first protrusion corresponding to the position of the first positioning groove.

Optionally, the outer surface of the first protrusion is arc-shaped.

Optionally, the fitting part is plate-shaped or spherical or hemispherical.

Optionally, the fitting portion has a first end and a second end arranged along the axial direction of the assembly, and the connecting arm is connected to the first end, or the connecting arm is connected to the third end. two ends; or the connecting arm is connected between the first end and the second end.

Optionally, the annular body is provided with a reinforcing portion protruding toward the center of the circle on the inner edge between two adjacent connecting portions, and the reinforcing portion and the connecting portion are spaced apart.

Optionally, the side of the annular body facing the stator assembly is provided with a first positioning portion, and the side of the stator assembly facing the annular body is correspondingly provided with a second positioning portion that is positioned and matched with the first positioning portion. Positioning Department;

The first positioning part is a protrusion, and the second positioning part is a groove; or,

The first positioning part is a groove, and the second positioning part is a protrusion.

Optionally, the annular body is provided with a plurality of second grooves or through holes arranged at intervals along the axial direction, and the annular body and the stator assembly are formed by injection molding to wrap the stator assembly and the annular body. Plastic body, the plastic body fills the second groove or the through hole.

Optionally, the assembly is a metal piece.

Optionally, the annular body is an annular plate; or

The annular body is composed of multiple arcs to form an annular shape.

Optionally, the coil further includes a cap body, the cap body covers an end of the stator assembly facing away from the assembly, the cap body and the coil enclose to form an accommodation cavity with one end open, Part or all of the valve housing of the valve body assembly is placed in the accommodation cavity, and the cap body, the stator assembly and the assembly are integrally provided. The present invention also provides a refrigeration equipment, including the electronic expansion valve described in any one of the above.

The technical solution of the present invention is to set the coil on the valve body assembly at any angle. During the interference fit process between the multiple fitting parts of the assembly and the outer peripheral wall of the valve body assembly, the connecting arm is in the valve body assembly. The elastic deformation occurs under the reaction of the outer peripheral wall, so that the distance between the two corresponding mating parts becomes larger, so as to reduce the resistance of the valve body assembly and the coil in the process of being assembled in place or relatively apart, so as to facilitate the disassembly of the coil and the valve body assembly. Installation is simpler and more convenient. And the connecting arm can provide the mating part with a force to compress the valve body assembly, so as to fix the coil as a whole on the valve body assembly, restrict the separation of the coil and the valve body assembly, and enable the coil and valve body assembly to be installed at any angle, and Due to the existence of the connecting arm, the elastic effect of the mating part is good, making it easier to complete the disassembly and assembly of the coil and valve body assembly.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of an embodiment of the electronic expansion valve of the present invention;

Figure 2 is a schematic structural diagram of the assembly in Figure 1;

Figure 3 is a schematic structural diagram of an assembly in another embodiment of the electronic expansion valve of the present invention.

Explanation of reference numbers:

label name label name 10 Valve body components 20 Coil twenty one stator assembly twenty two Assemblies 221 torus 222 connecting arm 223 Cooperation Department 11 valve housing 221a inner edge 111 first bump 223a first positioning groove 223b Strengthen the Ministry 223c First positioning department twenty three Cap body 223d Auxiliary fixation part twenty four Plastic body 221b Connector

The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), then the directional indications are only used to explain the position of a certain posture (as shown in the drawings). The relative positional relationship, movement conditions, etc. between the components under the display). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving “first”, “second”, etc. in the embodiments of the present invention, the descriptions of “first”, “second”, etc. are only for descriptive purposes and shall not be understood as indications or implications. Its relative importance or implicit indication of the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions in various embodiments can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist. , nor within the protection scope required by the present invention.

In order to solve the problems in the existing technology, the fixed connection method between the coil and the valve body assembly is high in cost, complex in assembly, and inconvenient to install and disassemble.

The invention proposes an electronic expansion valve.

In one embodiment, as shown in Figures 1 and 2, the electronic expansion valve includes a valve body assembly 10 and a coil 20. The coil 20 includes a stator assembly 21 and an assembly 22. The stator assembly 21 is sleeved on the valve body assembly 10. Perimeter; the assembly 22 includes an annular body 221, a plurality of fitting parts 223, and a connecting arm 222 connecting the annular body 221 and each fitting part 223. The annular body 221 is arranged around the outer circumference of the valve body assembly 10 and is connected to the stator assembly 21 Fixed, the plurality of fitting parts 223 are clamped and connected with the valve body assembly 10 .

Optionally, the electronic expansion valve includes a valve body assembly 10 and a coil 20, where the coil 20 includes a stator assembly 21 and an assembly 22. The stator assembly 21 is cylindrical and has a cavity inside for the valve body assembly 10 to be inserted. The valve body The assembly 10 has a valve housing 11. During the installation process of the coil 20 and the valve body assembly 10, the valve body assembly 10 needs to be inserted into the internal cavity of the stator assembly 21 from the open end so that the stator assembly 21 can be sleeved on the valve body. On the outer periphery of the assembly 10, the valve body assembly 10 has a valve housing 11. The valve housing 11 may be completely wrapped by the stator assembly 21, or may be partially wrapped by the stator assembly 21, which is not limited here. The annular body 221 is arranged around the outer periphery of the valve body assembly 10 and is fixedly connected with the stator assembly 21. The annular body 221 can be installed at one end of the stator assembly 21 close to the valve body assembly 10. When the stator assembly 21 is connected to the valve body at any angle, When the assembly 10 is installed, the plurality of mating parts 223 of the assembly 22 will contact and abut the outer peripheral wall of the valve body assembly 10 at the first time. At this time, the outer peripheral wall of the valve body assembly 10 will provide a reaction force to the mating parts. 223, thereby causing the connecting arm 222 to elastically deform, providing the mating portion 223 with a force to compress the outer peripheral wall of the valve body assembly 10, so as to fix the coil 20 as a whole on the valve body assembly 10, and restrict the coil 20 and the valve body assembly 10 Disengagement makes the installation of the coil 20 and the valve body assembly 10 simpler and more convenient.

It can be understood that as the valve body assembly 10 is inserted into the inner cavity of the stator assembly 21 more, the angle between the connecting arm 222 and the annular body 221 may first decrease and then remain at a constant angle. When the assembly 21 is sleeved on the outer periphery of the valve body assembly 10, the connecting arm 222 will always provide the mating portion 223 with a force to compress the valve body assembly 10, so that the mating portion 223 and the valve body assembly 10 are stuck and connected, so that the coil 20 is more simple and convenient to install on the valve body assembly 10, and the installation of the coil 20 and the valve body assembly 10 is not restricted by angle, and can be installed at any angle. And due to the existence of the connecting arm 222, the elasticity effect of the mating part 223 is good, making it easier to complete the assembly process of the coil 20 and the valve body assembly 10.

It should be noted that the fitting part 223 may be one connected to the annular body 221, or may be two, three, four or more, which are not limited here. In this embodiment, as shown in FIGS. 1 and 2 , considering the clamping strength of the assembly 22 and the outer peripheral wall of the valve body assembly 10 and the difficulty in producing the assembly 22 , the mating portion 223 may be four arranged in a circumferential array. , each fitting part 223 is provided with a connecting arm 222, one end of the connecting arm 222 is fixedly connected to the inner edge 221a of the annular body 221, and the other end is fixedly connected to the fitting part 223. The four fitting parts 223 are relative to the valve body assembly. A circular area can be formed between the outer surfaces of the valve housing 10 , and the diameter of the circular area matches the outer diameter of the valve housing 11 . For example, the diameter of the circular area can be slightly smaller than the outer diameter of the valve housing 11 . The four mating parts 223 are simultaneously locked with the outer peripheral wall of the valve housing 11, so as to make the connection between the coil 20 and the valve body assembly 10 more stable, reduce the assembly difficulty of the coil 20 and the valve body assembly 10, and reduce assembly costs.

In order to ensure the structural strength of the assembly 22 , the annular body 221 , the plurality of mating parts 223 and the plurality of connecting arms 222 may be integrally formed to facilitate installation and fixation with the stator assembly 21 . The annular body 221 may be integrally formed with the stator assembly 21 . The ends of 21 are fixed by welding or integrally connected by injection molding, which is not limited here.

In one embodiment, the connecting arms 222 are arranged at an included angle along the annular body 221 .

It should be further noted that the angle between the annular body 221 and the connecting arm 222 may be an acute angle or an obtuse angle, such as 135°, 150° or 170°, which is not limited here. In this embodiment, considering reducing the thickness of the fitting part 223 as much as possible to save production costs, the angle between the annular body 221 and the connecting arm 222 is an obtuse angle. At this time, the coil 20 supplies the valve from top to bottom. During the insertion process of the body assembly 10, the deformation of the connecting arm 222 gradually increases, so that the mating portion 223 has a greater holding force on the outer peripheral wall of the valve body assembly 10. When the valve body assembly 10 and the coil 20 are assembled in place, Under the force of the connecting arm 222, the valve body assembly 10 and the coil 20 cannot be separated in the axial direction, thereby completing the installation of the valve body assembly 10 and the coil 20, so that their connection is more stable. When disassembly is required, that is, the valve body assembly 10 and the coil 20 need to be relatively far apart, at this time, a force is exerted on the valve body assembly 10 away from the coil 20, and the connecting arm 222 receives an outward force. The radius of the circular space formed therebetween becomes larger, so that the valve body assembly 10 and the coil 20 can be separated more easily, making the disassembly of the valve body assembly 10 and the coil 20 easier and more convenient.

It should be noted that in other embodiments, it is also feasible for the annular body 221 and the connecting arm 222 to be parallel. At this time, due to the existence of the connecting arm 222, it is equivalent to the stiffness of the fitting part 223 becoming smaller, and when subjected to radial force, It is easier to deform and can also make the assembly between the valve body assembly 10 and the coil 20 simpler, which is not limited here.

In one embodiment, the axial cross-section of the connecting arm 222 is in the shape of a straight plate, an arc, a fold, a corrugation, or a multi-section bend.

Optionally, the cross section of the connecting arm 222 along its axial direction may be a straight plate, that is, the cross section of the connecting arm 222 along its length direction is a straight plate. In this case, the connecting arm 222 may be a connecting piece, a connecting rod, etc. , when the cross section of the connecting arm 222 along its axial direction is arc-shaped, the connecting arm 222 as a whole may have an irregular shape, which is not limited here. Of course, the connecting arm 222 can also be formed by multiple bending sections connected in one piece. In this case, the axis cross section of the connecting arm 222 can be in the shape of a fold line, a corrugated shape, or a multi-section bending shape. The specific structure is not limited here.

In one embodiment, a plurality of connecting portions 221b are protruding from the inner edge 221a of the annular body 221 toward the center direction, and each connecting portion 221b is connected to each connecting arm correspondingly.

Optionally, the connecting portion 221b can be tapered from the inner edge 221a of the annular body 221 toward the center of the circle, and its cross section can be in the shape of a boss. When the overall circumferential width of the annular body remains unchanged, the connecting arm can be The mating portion connected to the connecting arm is pushed toward the center of the circle, so that the elastic effect of the connecting arm is better. After the valve body assembly and the coil are installed, the engagement between the mating portion and the valve body assembly is more stable.

In one embodiment, the circumferential width of the connecting arm is less than or equal to the circumferential width of the connecting portion 221b; the circumferential width of the connecting arm is less than or equal to the circumferential width of the mating portion.

Optionally, the circumferential width of both ends of the connecting arm 222 connected to the annular body 221 and the mating part 223 is large, and the width of the middle part is small, so that the connecting area between the connecting arm 222 and the connecting part 221b is large, and the connection strength is high. Even if the connecting arm 222 is bent multiple times, it is not easy to break. It can be understood that when the fitting part 223 is clamped with the valve housing 11, during the compression process of the connecting arm 222, it is mainly the connection between the connecting arm 222 and the annular body 221 that is stressed, causing the connecting arm 222 to deform. During long-term use, , the connecting arm 222 is easily broken from the connection with the annular body 221. If the overall width of the connecting arm 222 is large, its elasticity effect is poor, making it difficult to install the coil 20 and the valve body assembly 10. The circumferential direction of the connecting arm 22 may be affected. The width is smaller than or equal to the circumferential width of the connecting portion 221b, and smaller than or equal to the circumferential width of the fitting portion. Therefore, in this embodiment, in order to improve the service life of the connecting arm 222 without affecting the elastic effect of the connecting arm 222, the width of the connecting arm 222 is wider from the two ends connected to the connecting portion 221b and the mating portion. The narrow arrangement in the middle not only ensures the connection strength between the connecting arm 222 and the connecting part 221b and the mating part, but also makes the elastic effect of the connecting arm itself better.

It should be noted that in other embodiments, the width of the connecting arm 222 may also be consistent from the end connected to the connecting part 221b to the mating part 223, or may be gradually narrowed and gradually widened, or the width of the connecting arm 222 may vary from It is also possible that the end connected to the connecting part 221b and the fitting part 223 may be tapered, which is not limited here.

It can be understood that the connecting arm 222 is used as an elastic connector to connect the fitting part 223 and the annular body 221. When the width of the connecting arm 222 is greater than the width of the fitting part 223, the stiffness of the connecting arm 222 is greater, and it does not Easy to deform. Taking the first protrusion 111 on the valve housing 11 and the first positioning groove 223a on the fitting part 223 as an example, when the user sets the entire coil 20 on the valve body assembly 10 at any angle, if the The first positioning groove 223a is misaligned with the first protrusion 111 on the valve housing 11 that is positioned and matched with it. At this time, the coil 20 can be rotated to drive the assembly 22 to rotate so that the first protrusion 111 on the valve body assembly 10 snaps in. The first positioning groove 223a completes the assembly of the coil 20 and the valve body assembly 10. If the width of the connecting arm 222 is greater than the width of the mating portion 223, it will not be easily deformed, and a larger external force will be required to assemble the coil 20 and the valve body assembly 10. Therefore, by reducing the width of the connecting arm 222, the connection can be made The width of the arm 222 is less than or equal to the width of the mating portion 223 to reduce the stiffness of the connecting arm 222 and also reduce the installation difficulty of the coil 20 and the valve body assembly 10 .

In one embodiment, one of the fitting portion 223 and the peripheral wall of the valve body assembly 10 is provided with a first protrusion 111, and the other is provided with a first positioning groove 223a for the first protrusion 111 to be inserted and positioned; or, where At least one fitting part 223 is provided with a first protrusion 111, and at least one fitting part 223 is provided with a first positioning groove 223a; the outer peripheral wall of the valve body assembly 10 is provided with a first positioning groove 223a corresponding to the position of the first protrusion 111, and the valve body The outer peripheral wall of the component 10 is provided with a first protrusion 111 corresponding to the first positioning groove 223a.

Optionally, as shown in FIG. 1 , when the first protrusion 111 is provided on the outer peripheral wall of the valve housing 11 , the fitting portion 223 has an opening on one side facing the valve housing 11 for the first protrusion 111 to be inserted and positioned. The first positioning groove 223a can be a groove or a through hole that runs through the entire mating part 223. When the coil 20 and the valve body assembly 10 are assembled in place, at this time, each mating part 223 The first positioning groove 223a is inserted into the first protrusion 111 of the valve housing 11 to prevent relative rotation of the valve body assembly 10 and the coil 20 after the assembly is completed. At the same time, the installation strength of the coil 20 and the valve body assembly 10 can be further improved. , to limit the axial separation of the coil 20 and the valve body assembly 10 along the valve body assembly 10, and at the same time reduce the force of the connecting arm 222, reduce the deformation of the connecting arm 222, and make the installation of the coil 20 and the valve body assembly 10 easier. While being stable, the connecting arm 222 has a longer service life.

Correspondingly, when the first positioning groove 223a is provided on the outer peripheral wall of the valve housing 11, the fitting portion 223 protrudes toward one side of the valve housing 11 with a first protrusion 111 that is positioned and matched with the first positioning groove 223a. The first positioning groove 223a may be a groove. It can also improve the installation strength of the coil 20 and the valve body assembly 10 to limit the axial separation of the coil 20 and the valve body assembly 10, making the installation of the coil 20 and the valve body assembly 10 more stable.

Furthermore, when there are multiple fitting parts 223 on the assembly part 22 , for example, there are two fitting parts 223 on the fitting part 22 . One of the fitting parts 223 is provided with the first protrusion 111 , and the other fitting part 223 is provided with a first protrusion 111 . There is a first positioning groove 223a (not shown). At this time, the valve housing 11 is provided with a first positioning groove 223a corresponding to the first positioning groove 223a. The protrusion 111, when the coil 20 and the valve body assembly 10 are assembled in place, the first protrusion 111 of one of the mating parts 223 snaps into the first positioning groove 223a of the valve housing 11, and the first positioning groove 223a of the other mating part 223 For the first protrusion 111 on the valve housing 11 to be inserted, it can also improve the installation strength of the coil 20 and the valve body assembly 10 to limit the axial separation of the coil 20 and the valve body assembly 10, so that the coil 20 and the valve body assembly 10 The installation is more stable, and at the same time, after the coil 20 and the valve body assembly 10 are assembled, the installation angle between the coil 20 and the valve body assembly 10 can be accurately positioned.

In one embodiment, the outer surface of the first protrusion 111 is arc-shaped.

Optionally, when the first protrusion 111 is protruded on the side surface of the fitting portion 223 facing the valve body assembly 10, before the valve body assembly 10 and the coil 20 are assembled in place, the first protrusion 111 will contact with the valve body assembly 10 and the coil 20. When friction occurs on the outer peripheral wall of the valve housing 11 and the outer surface of the first protrusion 111 is arc-shaped, the first protrusion 111 may be a bulge, a hemispherical protrusion or an ellipsoidal protrusion, etc. This will greatly reduce the friction coefficient with the outer peripheral wall of the valve housing 11, making the assembly of the coil 20 and the valve body assembly 10 simpler. Correspondingly, when the first protrusion 111 is provided on the outer peripheral wall of the valve housing 11, during the assembly process of the coil 20 and the valve body assembly 10, the first protrusion 111 will cause friction with the outer surface of the assembly part. , at this time, the outer surface of the first protrusion 111 on the valve housing 11 is set into an arc shape, which greatly reduces the friction coefficient with the outer peripheral wall of the valve housing 11, making the assembly of the coil 20 and the valve body assembly 10 simpler, and reducing the number of coils. 20 and the valve body assembly 10 are worn during the disassembly and assembly process, thereby improving the service life of the electronic expansion valve.

Of course, in other embodiments, the outer surface of the first protrusion 111 may also be a plane, for example, the first protrusion 111 may be a square, which is not limited here.

In yet another embodiment (not shown), the outer peripheral wall of the valve body assembly 10 is provided with a second positioning groove corresponding to the position of each fitting portion 223 and adapted to fit the fitting portion 223 .

Optionally, in this embodiment, the size of each second positioning groove is adapted to the size of the corresponding mating portion 223, that is, when the valve body assembly 10 and the coil 20 are assembled together, each mating portion The portion 223 is clamped in the corresponding second positioning groove of the valve housing 11 to limit the relative rotation between the coil 20 and the valve body assembly 10 and at the same time make the connection between the valve body assembly 10 and the coil 20 more stable. During the assembly process of the coil 20, first the fitting portion 223 is in contact with the outer peripheral wall of the valve housing 11, so that the connecting arm 222 elastically deforms. When the fitting portion 223 corresponds to the second positioning groove on the outer wall of the valve housing 11, The force exerted by the valve housing 11 on the connecting arm 222 is reduced, and the connecting arm 222 recovers a certain deformation, driving the fitting portion 223 to snap into the second positioning groove, completing the assembly of the valve body assembly 10 and the coil 20, and reducing the role of the connecting arm 222. force, reducing the deformation of the connecting arm 222, making the installation of the coil 20 and the valve body assembly 10 more stable, and at the same time, the service life of the connecting arm 222 is longer.

In one embodiment, the fitting portion 223 is plate-shaped, spherical, or hemispherical.

Optionally, the fitting portion 223 may be in the shape of a plate, such as a square elastic piece, a square plate, or other irregularly shaped plates, which are not limited here. Of course, in other embodiments, the fitting part 223 may also be spherical, hemispherical, or have other irregular shapes. In this case, the valve housing 11 may be provided with a second groove corresponding to the fitting part 223, so that The fitting part 223 is snapped in. The specific shape of the fitting part 223 is not limited here, as long as it can hold and fix the coil 20 and the valve body assembly 10 .

In one embodiment, the fitting portion 223 has a first end and a second end arranged along the axial direction of the assembly 20 , and the connecting arm 222 is connected to the first end, or the connecting arm 22 is connected to the second end; or the connecting arm 222 is connected to the second end. 222 is connected between the first end and the second end.

Optionally, the connecting arm 222 may be connected to the upper end of the fitting part 223, or may be connected to the lower end of the fitting part 223, or to a side of the fitting part 223 away from the valve body assembly 10, which is not limited here. In this embodiment, as shown in Figures 1 and 2, the first end and the second end of the assembly 20 can be defined as the upper end and the lower end of the assembly respectively, and the connecting arm 222 is connected to the upper end of the assembly 223. At this time , the angle between the connecting arm 222 and the fitting portion 223 is an obtuse angle.

In another embodiment, as shown in FIG. 3 , taking two mating parts 223 of the assembly 22 as an example, in this embodiment, the connecting arms 222 are inclined downward from the annular body 221 , The angle between the connecting arm 222 and the annular body 221 is an obtuse angle. The connecting arm 222 is connected to the lower end of the mating part 223. The connecting arm 222 and the mating part 223 can be connected by arc transition to improve the connection strength. At this time, the angle between the connecting arm 222 and the mating portion 223 is an acute angle, that is, the mating portion 223 is inclined upward from the mating position with the connecting arm 222, so that the entire assembly 22 occupies less space in the axial direction. While the installation of the coil 20 and the valve body assembly 10 is made more stable, the overall structure of the electronic expansion valve is made more compact.

It should be noted that in other embodiments, it is also feasible for the connecting arm 222 to be connected to a position between the first end and the second end of the fitting portion 223, which is not limited here.

In one embodiment, the annular body 221 has a reinforcing portion 223b protruding toward the center of the circle on the inner edge 221a between two adjacent matching portions 223, and the reinforcing portion 223b and the connecting portion 221b are spaced apart.

Alternatively, the annular body 221 can be an annular plate with an escape hole in the middle. When the coil 20 and the valve body assembly 10 are installed, the valve body assembly 10 first needs to pass through the escape hole of the annular plate and then enter the stator. within the internal space of component 21. The center of the escape hole may be coaxial with the axis of the stator assembly 21. In this embodiment, one end of the connecting arm 222 is connected to the inner edge 221a of the annular body 221 and is arranged at an angle with the annular body 221. Therefore, The overall width of the annular plate can be set narrower to reserve a longer length for the connecting arm 222 along the circumferential direction of the annular plate, so that the overall elastic performance of the connecting arm 222 is better. In order to enhance the strength of the annular body 221, the inner edge 221a of the annular body 221 between the two mating parts 223 is protruding toward the center direction to form a reinforcing part 223b to increase the width of the annular body 221 and increase the connection area between the annular body 221 and the stator assembly 21. It is larger, which not only improves the structural strength of the annular body 221, but also increases the connection strength between the stator assembly 21 and the annular body 221. Moreover, the reinforcing part 223b and the connecting part 221b are spaced apart and will not interfere with the deformation of the connecting arm 222.

In one embodiment, as shown in Figure 1, a first positioning portion 223c is provided on the side of the annular body 221 facing the stator assembly 21, and a corresponding first positioning portion 223c is provided on the side of the stator assembly 21 facing the annular body 221. The matching second positioning part; the first positioning part 223c is a protrusion and the second positioning part is a groove; or the first positioning part 223c is a groove and the second positioning part is a protrusion.

Optionally, a first positioning part 223c is provided on the side of the annular body 221 facing the stator assembly 21, and a second positioning part 223c is provided on the side of the stator assembly 21 facing the annular body 221. When the annular body 221 is installed on the stator assembly 21 When the first positioning part 223c is engaged, the first positioning part 223c is locked into the second positioning part to avoid circumferential deviation between the annular body 221 and the stator assembly 21 and improve the reliability of their connection. In this embodiment, from the perspective of facilitating the production of the stator assembly 21 and the annular body 221, the first positioning part 223c may be a cylindrical protrusion, and the second positioning part may be a concave shape that matches the cylindrical protrusion. When the annular body 221 is installed on the stator assembly 21, the cylindrical protrusion is inserted into the groove to avoid circumferential deviation between the annular body 221 and the stator assembly 21.

Of course, in other embodiments, the first positioning part 223c may be a groove, and the second positioning part may be a protrusion, and their shapes are not limited here. The stator assembly 21 may be connected to the annular body 221 through injection molding, or may be fixed through welding, which is not limited here.

In one embodiment, the annular body 221 is provided with a plurality of second grooves or through holes spaced apart along the axial direction. The stator assembly 21 is injection molded to form a plastic body 24 including the stator assembly 21 and the annular body 221 . The plastic body 24 Fill the second groove or through hole.

Optionally, the annular body 221 is provided with second grooves or through holes arranged at intervals along the axial direction. For convenience of explanation, the second grooves or through holes are defined as auxiliary fixing parts 223d, which may be separately provided 1 It can also be 2, 3 or more, which are not limited here. In this embodiment, the stator assembly 21 and the annular body 221 are integrally formed by injection molding to form a plastic body 24 that wraps the outer periphery of the stator assembly 21 and the annular body 221 to increase the connection strength between the assembly 22 and the stator assembly 21. At this time, Since the annular body 221 has an auxiliary fixing portion 223d, during the injection molding process, the molten plastic will flow into and fill the auxiliary fixing portion 223d, making the connection between the molded plastic body 24 and the annular body 221 more stable.

In one embodiment, the assembly 22 is a metal piece.

It should be noted that under normal circumstances, the signal applied to the coil 20 is a low-voltage DC pulse signal, but under certain circumstances, the coil 20 will be affected by the installation environment, magnetic field interference, lightning impact, etc. and convert it into a high-voltage or ultra-high-voltage signal. Therefore, the magnetic conductor in the stator assembly 21 needs to be reliably grounded to the outside through the refrigerant pipeline of the refrigeration system. Therefore, when designing the electronic expansion valve, it is necessary to conductively connect the stator assembly 21 with the valve housing 11 of the electronic expansion valve to improve the electronic expansion. The reliability of the valve. In this embodiment, the assembly 22 is made of metal parts, such as stainless steel, copper, iron, etc. When the coil 20 is installed on the valve body assembly 10, the valve housing 11, the assembly 22 and the coil The stator components 21 of 20 are connected in sequence, so that the magnet in the stator component 21 and the valve housing 11 of the electronic expansion valve are connected through the metal assembly 22, thereby improving the reliability of the electronic expansion valve.

In one embodiment, the annular body is an annular plate, or the annular body is composed of multiple arcs to form an annular shape.

Optionally, the annular body can be an entire annular plate, or it can be an annular shape formed by connecting multiple arcs, such as a petal shape, etc. The specific shape is not limited here, and the user can customize it according to Choose by yourself.

In one embodiment, the coil 20 further includes a cap body 23. The cap body 23 covers one end of the stator assembly 21 away from the assembly 22. The cap and the coil 20 enclose a receiving cavity with one end open. The valve housing of the valve body assembly 10 11 is partially or completely placed in the accommodation cavity, and the cap body 23, the stator assembly 21 and the assembly 22 are integrally provided.

Optionally, the cap body 23 is provided on one end of the stator assembly 21 away from the assembly 22 to cover the internal cavity of the stator assembly 21. The cap body 23 and the coil 20 are enclosed to form an accommodation cavity with one end open, and the coil 20 is installed. After being installed on the valve body assembly 10 , the inner peripheral wall of the cap body 23 abuts the end of the valve housing 11 extending out of the stator assembly 21 to limit the axial positions of the coil 20 and the valve body assembly 10 . The cap may be fixed on the stator assembly 21 through welding, or may be integrally formed with the stator assembly 21 and the assembly 22 through injection molding and wrapped in the plastic body 24, which is not limited here.

The present invention also proposes a refrigeration equipment. The refrigeration equipment includes an electronic expansion valve. The specific structure of the electronic expansion valve refers to the above-mentioned embodiments. Since this refrigeration equipment adopts all the technical solutions of all the above-mentioned embodiments, it at least has the characteristics of the above-mentioned embodiments. All the beneficial effects brought by the technical solutions will not be repeated here.

The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Under the inventive concept of the present invention, equivalent structural transformations can be made using the contents of the description and drawings of the present invention, or direct/indirect applications. Other related technical fields are included in the patent protection scope of the present invention.

Claims (16)

1. An electronic expansion valve, characterized in that it includes: Valve body components; A coil includes a stator assembly that is sleeved on the outer periphery of the valve body assembly; Assembly part, the assembly part includes an annular body, a plurality of fitting parts and a connecting arm connecting the annular body and each fitting part, the annular body is arranged around the outer periphery of the valve body assembly and is connected with the The stator assembly is connected and fixed, and the plurality of matching parts are clamped and connected with the valve body assembly. 2. The electronic expansion valve according to claim 1, wherein the connecting arm and the annular body are arranged at an included angle. 3. The electronic expansion valve according to claim 1, wherein the cross section of the connecting arm along the axial direction of the annular body is a straight plate shape, an arc shape, a broken line shape, a corrugated shape, or a multi-section bending shape. 4. The electronic expansion valve according to claim 1, wherein the inner edge of the annular body is protruding toward a center direction with a plurality of connecting portions, and each connecting portion is connected to each connecting arm correspondingly. . 5. The electronic expansion valve according to claim 4, wherein the circumferential width of the connecting arm is less than or equal to the circumferential width of the connecting portion; The circumferential width of the connecting arm is less than or equal to the width of the fitting portion. 6. The electronic expansion valve according to claim 1, wherein one of the fitting portion and the peripheral wall of the valve body assembly is provided with a first protrusion, and the other is provided with a first protrusion for receiving the first protrusion. The first positioning groove is inserted into the positioning slot; Alternatively, at least one of the fitting parts is provided with a first protrusion, and at least one of the fitting parts is provided with a first positioning groove; The outer peripheral wall of the valve body assembly is provided with a first positioning groove corresponding to the position of the first protrusion, and the outer peripheral wall of the valve body assembly is provided with a first protrusion corresponding to the position of the first positioning groove. 7. The electronic expansion valve according to claim 6, wherein the outer surface of the first protrusion is arc-shaped. 8. The electronic expansion valve according to claim 1, wherein the fitting portion is plate-shaped, spherical, or hemispherical. 9. The electronic expansion valve of claim 1, wherein the fitting portion has a first end and a second end disposed along the axial direction of the assembly, and the connecting arm is connected to the first end. end, or the connecting arm is connected to the second end; or the connecting arm is connected between the first end and the second end. 10. The electronic expansion valve according to claim 4, wherein the annular body is provided with a reinforcing portion protruding toward the center of the circle on the inner edge between two adjacent connecting portions, and the reinforcing portion and the The connecting parts are arranged at intervals. 11. The electronic expansion valve according to claim 1, wherein a first positioning portion is provided on a side of the annular body facing the stator assembly, and a first positioning portion is provided on a side of the stator assembly facing the annular body. There is a second positioning part positioned and matched with the first positioning part; The first positioning part is a protrusion, and the second positioning part is a groove; or, The first positioning part is a groove, and the second positioning part is a protrusion. 12. The electronic expansion valve according to claim 1, wherein the annular body is provided with a plurality of second grooves or through holes spaced apart along the circumferential direction, and the annular body and the stator assembly are formed by injection molding. To form a plastic body wrapping the stator assembly and the annular body, the plastic body fills the second groove or the through hole. 13. The electronic expansion valve according to claim 1, wherein the assembly is a metal piece. 14. The electronic expansion valve according to claim 1, wherein the annular body is an annular plate; or The annular body is composed of multiple arcs to form an annular shape. 15. The electronic expansion valve of claim 1, wherein the coil further includes a cap body, the cap body is disposed on an end of the stator assembly facing away from the assembly, and the cap body is connected with the assembly. The coil encloses an accommodating cavity with one end open, the valve housing of the valve body assembly is partially or entirely placed in the accommodating cavity, and the cap body, the stator assembly and the assembly are integrally provided. 16. Refrigeration equipment, characterized by comprising the electronic expansion valve according to any one of claims 1-15.