Electronic expansion valve and refrigeration equipment

Abstract

The utility model discloses an electronic expansion valve and refrigeration equipment, and relates to the technical field of refrigeration, the electronic expansion valve comprises a valve body and a coil assembly, and an installation frame is installed on the outer wall of the valve body; the valve body is sleeved with the coil assembly, the coil assembly comprises a stator part, a plastic package part and a fixing structure, the fixing structure comprises a base part and an installation part which are connected, the base part is annularly arranged, the stator part and the base part are wrapped by the plastic package part so that the fixing structure can be fixed to one axial side of the stator part, and the installation part is installed on the installation frame. According to the technical scheme of the utility model, the fixing structure is provided with the annularly arranged base part, and the base part is arranged on the axial side of the stator part, so that the stator part and the base part are fixed together only through one-time injection molding, thereby reducing the processing steps of the fixing structure and improving the processing efficiency. The installation efficiency is improved while high installation accuracy and reliability are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration technical field, especially electronic expansion valve and refrigeration plant. BACKGROUND

[0002] In prior art, electronic expansion valve includes valve body, coil component and rotor component, coil component generates magnetic field to drive rotor component rotation to drive valve core component in valve body to move to adjust valve port opening degree, coil component is fixed through buckle assembly with valve body, and fixed structure is installed on coil component after injection molding, then laser welding positioning is carried out, and then the positioning strength of fixed structure is ensured through epoxy resin pouring, so that the installation process of fixed structure is complex, and the installation efficiency is low. SUMMARY

[0003] The utility model discloses a kind of electronic expansion valve and refrigeration plant, to simplify the installation process of fixed structure.

[0004] To achieve the above object, the electronic expansion valve provided by the utility model comprises:

[0005] Valve body, the outer wall of the valve body is provided with a mounting bracket;

[0006] Coil assembly, which is sleeved on the valve body, the coil assembly includes a stator component, a plastic encapsulation part and a fixing structure, the fixing structure includes a base and a mounting portion connected to each other, the base is annularly arranged, the plastic encapsulation part wraps the stator component and the base to fix the fixing structure on one side of the stator component in the axial direction, and the mounting portion is mounted on the mounting bracket.

[0007] In an embodiment, the base includes a circular ring portion and an anti-rotation portion protruding from the outer periphery of the circular ring portion, and the mounting portion is connected to the anti-rotation portion.

[0008] In an embodiment, the circular ring portion is provided with a fracture, and the anti-rotation portion is connected to the circular ring portion on the opposite sides of the fracture, respectively, and the mounting portion is located below the fracture.

[0009] In an embodiment, the fixing structure further includes a connecting portion, and the anti-rotation portion is connected to the mounting portion through the connecting portion.

[0010] In an embodiment, the thickness of the base, the connecting portion and the mounting portion is consistent.

[0011] In an embodiment, the fixing structure is integrally stamped and formed.

[0012] In an embodiment, the mounting portion is raised towards the plastic encapsulation part to form a raised portion, the mounting bracket is provided with a mounting hole, and the raised portion is buckled with the mounting hole.

[0013] In an embodiment, the mounting frame comprises a sleeve part sleeved on the valve body and a mounting plate for abutting against the plastic sealing part, and the mounting hole is formed in the mounting plate.

[0014] In an embodiment, the plastic sealing part is provided with a wire tube extending in a direction away from the outer periphery of the stator component.

[0015] The utility model also provides a refrigeration equipment, refrigeration equipment includes electronic expansion valve, electronic expansion valve includes valve body and coil assembly, the valve body outer wall is equipped with mounting frame, the coil assembly is sleeved on the valve body, the coil assembly includes stator component, plastic sealing part and fixed structure, the fixed structure includes the base and the installation part who connects, the base is annularly arranged, the plastic sealing part is wrapped the stator component and the base to make the fixed structure is fixed on the one side of the stator component axial, the installation part is installed on the mounting frame.

[0016] The technical scheme of the utility model adopts the base which is annularly arranged and arranged on the one side of the stator component axial, so that the stator component and the base are fixed together by one injection molding, thereby reducing the processing steps of the fixed structure, improving the installation efficiency while ensuring high installation accuracy and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in the drawings without creative labor.

[0018] Figure 1 It is a structure schematic view of the electronic expansion valve in a sectional view angle of the utility model;

[0019] Figure 2 It is a structure schematic view of the fixed structure in the utility model; Figure 1

[0020] Figure 3 It is a structure schematic view of the coil assembly in the utility model in a view angle; Figure 1

[0021] Figure 4 It is a structure schematic view of the coil assembly in the utility model in another view angle; Figure 1

[0022] Figure 5 It is a structure schematic view of the valve body and the mounting frame cooperation;​​​

[0023] Figure 6 For Figure 5 Structure diagram of mounting rack.

[0024] Brief Description of the Drawings:

[0025] 100, electronic expansion valve; 1, valve body; 2, mounting rack; 21, sleeve part; 22, mounting plate; 221, mounting hole; 200, coil assembly; 3, stator component; 4, plastic sealing part; 42, wire tube; 5, fixed structure; 51, base; 511, circular ring part; 511a, broken part; 512, anti-rotation part; 52, mounting part; 521, protruding part; 53, connecting part; 6, wire.

[0026] The realization, functional features and advantages of the utility model will be further described in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0029] In addition, if the embodiments of the utility model involve the description of "first", "second", etc., the description of "first", "second", etc. is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing in the entire text means that the three parallel schemes are included, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skill in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0030] In the prior art, the electronic expansion valve comprises a valve body, a coil component and a rotor component, the coil component generates a magnetic field to drive the rotor component to rotate when energized, so as to drive a valve core component in the valve body to move, thereby adjusting the opening degree of a valve port. The coil component is fixed by snap assembly with the valve body through a fixing structure, and the fixing structure is installed on the coil component after injection molding of the coil component, is then laser welded and positioned, and then the positioning strength of the fixing structure is ensured by pouring epoxy resin. In this way, the installation process of the fixing structure is complex, and the installation efficiency is low.

[0031] In view of this, the utility model provides an electronic expansion valve 100.

[0032] Please refer to Figure 1 and Figure 2 In an embodiment of the utility model, the electronic expansion valve 100 comprises a valve body 1 and a coil assembly 200, the valve body 1 is provided with a mounting frame 2 on the outer wall, the coil assembly 200 is sleeved on the valve body 1, the coil assembly 200 comprises a stator component 3, a plastic sealing part 4 and a fixing structure 5, the fixing structure 5 comprises a base 51 and an installation part 52 connected, the base 51 is annularly arranged, the plastic sealing part 4 wraps the stator component 3 and the base 51 to make the fixing structure 5 fixed on the one side of the stator component 3 in the axial direction, and the installation part 52 is installed on the mounting frame 2.

[0033] It should be noted that the electronic expansion valve 100 is commonly used in refrigeration equipment and refrigeration system, and is mainly used in air conditioners to adjust the refrigerant flow entering the refrigeration equipment.

[0034] Specifically, the valve body 1 and the mounting frame 2 in the embodiment of the utility model can be fixedly connected or detachably connected. The valve body 1 and the mounting frame 2 are fixedly connected through the fixing structure 5, and when the connection between the fixing structure 5 and the mounting frame 2 is released, the mounting frame 2 can be detached from the valve body 1.

[0035] It is mentioned in the above description that generally, the installation of the fixing structure 5 needs to be laser welded and positioned on the stator component 3 first, and then be integrally injection molded with the plastic sealing part 4. In order to save the installation steps, the base 51 of the fixing structure 5 is annularly arranged in the embodiment, and the fixing structure 5 is placed on the one side of the stator component 3 in the axial direction before the plastic sealing part 4 is injection molded, so that the plastic sealing part 4 is injection molded on the outside of the stator component 3 and the fixing structure 5. In this way, the fixing process of the fixing structure 5 needing secondary injection molding and welding in the prior art is avoided, the processing steps are reduced, and the production efficiency of the electronic expansion valve 100 is improved. Since the stator component 3 is annularly arranged as a whole, the base 51 of the fixing structure 5 is annularly arranged, which matches the shape of the stator component 3, and further improves the cooperation strength of the fixing structure 5 and the plastic sealing part 4.

[0036] In addition, the fixing structure 5 further enhances the overall structural stability by being fixedly fitted with the mounting frame 2 through the mounting portion 52.

[0037] The technical scheme of the utility model discloses a fixing structure 5 is provided with annular base 51, and the base 51 is arranged on the one side of the stator component 3 in the axial direction, so that the stator component 3 and the base 51 only need to be fixed together through one injection molding, thereby reducing the processing steps of the fixing structure 5, improving the installation efficiency while ensuring high installation accuracy and reliability.

[0038] In an embodiment, please refer to Figure 2 The base 51 includes a circular ring portion 511 and an anti-rotation portion 512 protruding from the outer periphery of the circular ring portion 511, and the mounting portion 52 is connected to the anti-rotation portion 512.

[0039] It should be noted that the base 51 includes a circular ring portion 511 and an anti-rotation portion 512 protruding from the outer periphery of the circular ring portion 511. Considering that the circular ring portion 511 is annularly arranged as a whole, and the base 51 is arranged between the stator component 3 and the plastic sealing portion 4, if the plastic sealing portion 4 is worn after long-term use, the base 51 may move along with the vibration of the electronic expansion valve 100, thereby causing the connection between the base 51 and the mounting frame 2 to fail. Therefore, the anti-rotation portion 512 is protruding from the outer periphery of the circular ring portion 511. The anti-rotation portion 512 can be a protrusion protruding from the outer periphery of the circular ring portion 511, or it can be a structure formed by extending the outer periphery of the circular ring portion 511 in a direction away from the outer periphery. The anti-rotation portion 512 can be square or irregular, and is not limited in this regard.

[0040] Therefore, by providing the anti-rotation portion 512 on the outer periphery of the circular ring portion 511, the circular ring portion 511 is prevented from moving between the plastic sealing portion 4 and the stator component 3, thereby enhancing the stability of the cooperation between the plastic sealing portion 4 and the base 51.

[0041] In an embodiment, please continue to refer to Figure 2 The circular ring portion 511 is provided with a fracture 511a, the anti-rotation portion 512 is connected to the circular ring portion 511 on the opposite sides of the fracture 511a, and the mounting portion 52 is located on the lower side of the fracture 511a.

[0042] Specifically, considering that the mounting portion 52 is connected to the anti-rotation portion 512, and the anti-rotation portion 512 is protrudingly arranged on the outer periphery of the annular portion 511, in order to facilitate that the entire fixing structure 5 can be integrally formed by stamping, a break 511a is arranged on the annular portion 511, and the anti-rotation portion 512 is connected to the annular portion 511 on the opposite sides of the break 511a respectively, so that the mounting portion 52 is located on the lower side of the break 511a, thereby avoiding the need for the mounting portion 52 and the anti-rotation portion 512 to be connected by welding or other connection methods, and simplifying the forming steps and processing methods of the fixing structure 5.

[0043] Optionally, in an embodiment, please continue to refer to Figure 2 , the fixing structure 5 further comprises a connecting portion 53, and the anti-rotation portion 512 is connected to the mounting portion 52 through the connecting portion 53.

[0044] It should be noted that, in order to facilitate the mounting portion 52 and the mounting frame 2 to form a cooperation relationship, the connecting portion 53 is arranged between the anti-rotation portion 512 and the mounting portion 52, and the connecting portion 53 extends from the anti-rotation portion 512 to the mounting portion 52 and is formed in parallel to the axial direction of the stator component 3, so that the mounting portion 52 has sufficient space to form a cooperation relationship with the mounting frame 2. In this embodiment, the mounting portion 52 can be located between the valve body 1 and the mounting frame 2, or the mounting frame 2 can be located between the valve body 1 and the mounting portion 52, which is not specifically limited here.

[0045] It can be understood that, in an embodiment, please continue to refer to Figure 2 , the thicknesses of the base portion 51, the connecting portion 53 and the mounting portion 52 are consistent.

[0046] It should be noted that, in order to simplify the processing method of the fixing structure 5, the thicknesses of the base portion 51, the connecting portion 53 and the mounting portion 52 are consistent, so that the fixing structure 5 can be first punched, and then the mounting portion 52 and the connecting portion 53 are formed by stamping. In this way, the processing method of the fixing structure 5 is simplified, and the fixing structure 5 avoids the need for welding and other low-precision and relatively complex processing technologies.

[0047] In an embodiment, please continue to refer to Figure 2 , the fixing structure 5 is integrally formed by stamping.

[0048] Specifically, in this embodiment, in order to simplify the processing method of the fixing structure 5, the fixing structure 5 is integrally formed by stamping. Since the annular portion 511 is provided with the break 511a, the mounting portion 52 and the connecting portion 53 of the fixing structure 5 can be formed in a stamping state, thereby avoiding the need for welding or other connection methods for forming the fixing structure 5, and improving the processing efficiency of the fixing structure 5.

[0049] In an embodiment, please continue to refer to Figure 2 The mounting portion 52 is raised towards the plastic sealing portion 4 to form a raised portion 521, and the mounting frame 2 is provided with a mounting hole 221, and the raised portion 521 is buckled with the mounting hole 221.

[0050] It should be noted that the mounting portion 52 is raised towards the plastic sealing portion 4 to form a raised portion 521, which is used to buckle between the mounting frames 2, so that the mounting hole 221 is provided on the mounting frame 2 to buckle with the raised portion 521, wherein the design of the raised portion 521 enables the mounting portion 52 to buckle directly with the mounting hole 221, avoiding the complex process of the traditional fixing structure 5 installation, thereby improving the installation efficiency. In addition, the structure design of the buckle cooperation ensures that the connection between the mounting portion 52 and the mounting frame 2 is more stable, reducing the risk of loosening or falling off. Specifically, the raised portion 521 can be formed by injection molding or mechanical processing, and its shape can be circular, square or other suitable buckle shapes. The shape and size of the mounting hole 221 should match the raised portion 521 to ensure the tightness and stability of the buckle cooperation.

[0051] Therefore, the technical scheme simplifies the installation process and improves the connection stability, effectively solving the technical problems of unstable connection between the mounting portion 52 and the mounting frame 2 and low installation efficiency. Compared with the prior art, the scheme not only reduces the installation steps and process complexity, but also improves the reliability and efficiency of installation, which has significant practicality and innovation.

[0052] Further, please refer to Figure 5 and Figure 6 The application also provides that the mounting frame 2 includes a sleeve portion 21 sleeved on the valve body 1 and a mounting plate 22 used to abut against the plastic sealing portion 4, and the mounting hole 221 is provided on the mounting plate 22. Among them, the sleeve portion 21 is directly sleeved on the valve body 1, which ensures the stable connection between the mounting frame 2 and the valve body 1, and the mounting plate 22 abuts against the plastic sealing portion 4, which further enhances the stability of the structure. The design of the mounting hole 221 enables the mounting plate 22 to be fixed to the plastic sealing portion 4 through simple buckle or bolt connection, thereby simplifying the installation process.

[0053] Specifically, the sleeve portion 21 can be tightly fitted when it is sleeved on the valve body 1, avoiding loosening. The mounting plate 22 can be designed to have multiple mounting holes 221 to adapt to plastic sealing portions 4 without providing size or shape. In addition, the surface of the mounting plate 22 can be provided with anti-skid lines or coating to increase the friction between the plastic sealing portion 4, further improving the stability of the connection.

[0054] Therefore, the technical scheme of the application designs the mounting frame 2 to include two parts of the sleeve joint part 21 and the mounting plate 22, wherein the mounting frame 2 can be welded together by the sleeve joint part 21 and the mounting plate 22, or can be integrally formed.

[0055] In an embodiment, referring to Figure 1 、 Figure 3 and Figure 4 , the plastic sealing part 4 is provided with a wire tube 42 extending away from the outer periphery of the stator component 3.

[0056] Specifically, the wire tube 42 is arranged on the plastic sealing part 4, and the wire tube 42 and the plastic sealing part 4 can be integrally formed by one-time injection molding, or the wire tube 42 can be arranged on the plastic sealing part 4 by two-time injection molding. The wire tube 42 is used for accommodating the external lead wire 6 of the electronic expansion valve 100, and the arrangement of the wire tube 42 enables the lead wire 6 to be led out from the outer periphery of the stator component 3, thereby avoiding interference between the lead wire 6 and the fixing structure 5. The wire tube 42 extends away from the outer periphery of the stator component 3, thereby further optimizing the spatial layout, so that the leading direction of the wire tube 42 is different from the mounting direction of the fixing structure 5, thereby facilitating electrical connection between other components of the refrigeration equipment and the electronic expansion valve 100.

[0057] Therefore, the application simplifies the mounting process by arranging the wire tube 42 on the outer periphery of the stator component 3, and arranging the fixing structure 5 on one side of the stator component 3 in the axial direction, so that the layout of the wire tube 42 and the mounting of the fixing structure 5 do not interfere with each other. The wire tube 42 extends away from one side of the stator component 3, thereby further optimizing the spatial layout and avoiding conflict between the wire tube 42 and the fixing structure 5.

[0058] The utility model also provides a refrigeration equipment, the refrigeration equipment includes electronic expansion valve 100, the specific structure of the electronic expansion valve 100 refers to the above embodiment, because the refrigeration equipment adopts all the technical schemes of the above all embodiments, therefore at least has all beneficial effects brought by the technical scheme of the above embodiment, here will not repeat.

[0059] The above is only an exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and drawing contents, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. An electronic expansion valve characterized by, The valve body is provided with a mounting frame on its outer wall. The coil assembly is sleeved on the valve body and comprises a stator component, a plastic sealing part and a fixing structure. The fixing structure comprises a base and a mounting part connected with each other. The base is annularly arranged. The plastic sealing part wraps the stator component and the base to fix the fixing structure on the axial side of the stator component. The mounting part is mounted on the mounting frame. The base comprises a circular ring part and an anti-rotation part protruding from the outer periphery of the circular ring part. The mounting part is connected with the anti-rotation part.

2. The electronic expansion valve according to claim 1, wherein The circular ring part is provided with a fracture. The anti-rotation part is connected with the circular ring part on the opposite sides of the fracture respectively. The mounting part is located on the lower side of the fracture.

3. The electronic expansion valve according to claim 2, wherein The fixing structure further comprises a connecting part. The anti-rotation part is connected with the mounting part through the connecting part.

4. The electronic expansion valve of claim 2, wherein The thickness of the base, the connecting part and the mounting part is consistent.

5. The electronic expansion valve according to claim 4, wherein The fixing structure is integrally stamped and formed.

6. The electronic expansion valve of claim 1, wherein The mounting part is raised to form a raised part towards the plastic sealing part. The mounting frame is provided with a mounting hole. The raised part is snap-fitted with the mounting hole.

7. The electronic expansion valve of claim 1, wherein The mounting frame comprises a sleeving part sleeved on the valve body and a mounting plate used for abutting against the plastic sealing part. The mounting hole is formed on the mounting plate.

8. The electronic expansion valve of claim 7, wherein The plastic sealing part is provided with a wire tube. The wire tube extends away from the outer periphery of the stator component.

9. The electronic expansion valve of claim 1, wherein The electronic expansion valve comprises any one of the electronic expansion valves according to claims 1 to 9.

10. A refrigeration appliance characterized in that, ​

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