Electronic expansion valve and valve main body unit and manufacturing method thereof

Abstract

The invention discloses an electronic expansion valve and a valve main body unit and a manufacturing method thereof, the valve main body unit has an axis direction, the valve main body unit comprises a first part, a second part and a force application part, the first part comprises a connecting part and one of a valve body and a coil part, and the valve body and the coil part are connected with the connecting part or are of an integrated structure. The second part comprises the other one of the valve body and the coil part, and the valve body is partially inserted into the coil part; the second part is provided with a stopping part, the first part comprises a matching part, the matching part is directly or indirectly connected with the stopping part in a limiting mode in the axis direction, the force application part is arranged between the stopping part and the first part in the axis direction, and the force application part can make the stopping part abut against the first part in the axis direction. According to the valve body unit, integrated arrangement of the valve body and the coil component is achieved, centralized transportation and overall installation can be conveniently carried out, the transportation cost can be reduced, and the installation efficiency and the connection reliability can be improved.

Description

Technical Field

[0001] This invention relates to the field of valve technology, specifically to an electronic expansion valve, its valve body unit, and its manufacturing method. Background Technology

[0002] An electronic expansion valve typically consists of a coil assembly, a valve body, and a valve frame, all of which are independent of each other. During installation, the valve body and coil assembly can be connected separately to the valve frame, making the installation process relatively complex. Summary of the Invention

[0003] The purpose of this invention is to provide an electronic expansion valve, its valve body unit, and a manufacturing method thereof. The valve body unit integrates the valve body and the coil component, enabling convenient centralized transportation and overall installation, reducing transportation costs, improving installation efficiency, and ensuring high reliability of the connection between the valve body and the coil component.

[0004] To solve the above-mentioned technical problems, the present invention provides a valve body unit for an electronic expansion valve. The valve body unit has an axial direction and includes a first component, a second component, and a force-applying component. The first component includes a connecting component and one of a valve body or a coil component that is connected to or integrally formed with the connecting component. The second component includes the valve body or the coil component, with a portion of the valve body inserted into the coil component. The second component is provided with a stop portion. The first component includes a mating portion for directly or indirectly limiting a connection with the stop portion along the axial direction. The force-applying component is disposed between the stop portion and the first component along the axial direction, and the force-applying component enables the stop portion to abut against the first component along the axial direction.

[0005] In the above scheme, the stop portion of the second component and the mating portion of the first component are connected in a limiting manner along the axial direction, allowing the first and second components to be connected as a whole. This facilitates centralized transportation and overall installation of the valve body unit, effectively reducing transportation costs and simplifying the installation process of the electronic expansion valve, thereby improving installation efficiency. Simultaneously, the valve body unit also has a force-applying component between the stop portion and the first component. This component drives the stop portion to abut against the first component along the axial direction, ensuring a tight fit between them and reducing relative swaying between the first and second components along the axial direction. This improves the reliability and stability of the connection between the first and second components, which is of positive significance for ensuring centralized transportation and overall installation of the valve body unit.

[0006] The present invention also provides an electronic expansion valve, including a valve body unit and a valve body unit, wherein the valve body unit is the valve body unit described above, a portion of the valve body is inserted into the valve body unit, and the second component is connected to the valve body unit.

[0007] In the electronic expansion valve provided by the present invention, the stop part of the second component and the mating part of the first component are connected in a limiting connection in the axial direction, so that the first component and the second component can be connected as a whole, thereby making the valve body unit a whole component, which can be conveniently transported and installed as a whole, thereby effectively reducing transportation costs and simplifying the installation process of the electronic expansion valve, thus improving installation efficiency.

[0008] Meanwhile, the valve body unit also features a force-applying component between the stop and the first component. This component drives the stop to abut against the first component along the axial direction, ensuring a tight fit between them. This also reduces relative wobbling between the first and second components along the axial direction, thus improving the connection reliability and stability. When a portion of the valve body is inserted into the valve body unit, the second component connects to the valve body unit, simplifying the installation process. Consequently, the installation of the electronic expansion valve also becomes simpler.

[0009] The present invention also provides a method for manufacturing an electronic expansion valve, the method comprising: a preparation step, configuring a valve body unit, including: placing a force-applying component between a stop portion of a first component and a second component along an axial direction, the first component including a connecting component and one of a valve body or a coil component connected to or integrally formed with the connecting component, the second component including the valve body or the coil component; partially inserting a portion of the valve body into the coil component, such that the force-applying component enables the stop portion to abut against the first component along the axial direction; an insertion step, partially inserting the valve body into the valve body unit; and a connection step, connecting the second component and the valve body unit.

[0010] The manufacturing method of the electronic expansion valve provided by the present invention involves placing a force-applying component between the stop portion of the first component and the second component along the axial direction. This allows the stop portion to abut against the first component along the axial direction when a portion of the valve body is inserted into the coil component, enabling the first and second components to be connected as a whole. This also allows the stop portion to fit tightly against the first component and reduces the relative wobbling of the first and second components along the axial direction, thereby improving the connection reliability and stability of the first and second components. When a portion of the valve body is inserted into the valve body unit, the second component is connected to the valve body unit, simplifying the installation steps. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the valve body unit of the electronic expansion valve provided in the embodiment of the present invention;

[0012] Figure 2 for Figure 1 A cross-sectional view, in which the force-applying component is an elastic component;

[0013] Figure 3 for Figure 1 An exploded view, in which the force-applying component is an elastic component;

[0014] Figure 4 This is a schematic diagram of the valve seat structure;

[0015] Figure 5 for Figure 4 Cross-sectional view;

[0016] Figure 6 This is a structural schematic diagram of the connecting components;

[0017] Figure 7 for Figure 6 A sectional view;

[0018] Figure 8 for Figure 1 A partial cross-sectional view, in which the force-applying component is a magnetic component;

[0019] Figure 9 This is a schematic diagram of the structure of the electronic expansion valve provided in an embodiment of the present invention;

[0020] Figure 10 This is a schematic flowchart of the manufacturing method of the electronic expansion valve provided in the embodiment of the present invention;

[0021] Figure 11 A flowchart illustrating the configuration of the valve body unit;

[0022] Figure 12 This is a flowchart illustrating the connection steps;

[0023] Figure 13 This is a schematic diagram of the pre-connection step;

[0024] Figure 14 This is a flowchart illustrating the adjustment steps.

[0025] Figure label:

[0026] 1000 - Valve body unit; 1000A - First component; 1000B - Second component; 1100 - Valve body; 1110 - Valve seat; 1111 - Stop; 1111A - Second mounting groove; 1112 - Functional part; 1113 - Threaded part; 1114 - Second stepped surface; 1120 - Sleeve; 1121 - Through hole; 1122 - Valve port passage; 1130 - Lead screw; 1140 - Nut; 1150 - Valve needle Components; 1160-Rotor; 1170-Cover; 1200-Coil component; 1210-Signal connection part; 1300-Connecting component; 1310-Mating part; 1311-First mounting groove; 1320-Annular body; 1321-Small diameter part; 1322-Large diameter part; 1323-First stepped surface; 1400-Force-applying component; 1410-Elastic component; 1420-First magnetic part; 1430-Second magnetic part;

[0027] 2000-Valve Body Unit;

[0028] P - Axis direction. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0031] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0032] In the description of embodiments of the present invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0033] Please refer to Figures 1-7 , Figure 1This is a schematic diagram of the valve body unit of the electronic expansion valve provided in the embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional view, in which the force-applying component is an elastic component; Figure 3 for Figure 1 An exploded view, in which the force-applying component is an elastic component; Figure 4 This is a schematic diagram of the valve seat structure; Figure 5 for Figure 4 Cross-sectional view; Figure 6 This is a structural schematic diagram of the connecting components; Figure 7 for Figure 6 A sectional view.

[0034] like Figures 1-3 As shown, an embodiment of the present invention provides a valve body unit 1000 for an electronic expansion valve, including a valve body 1100 and a coil component 1200. The valve body unit 1000 has an axial direction P.

[0035] The valve body 1100 is the core component of the electronic expansion valve, primarily used to regulate the flow of fluid. Specifically, as... Figure 2 and Figure 3 As shown, the valve body 1100 may include at least a valve seat 1110, a sleeve 1120, a lead screw 1130, a nut 1140, a valve needle assembly 1150, a rotor 1160, and a cover 1170.

[0036] The valve seat 1110 can be fitted over the sleeve 1120 and connected to it. Specific connection methods include welding, bonding, threaded connection, interference fit, or being an integral structural component; no limitation is made here, as long as the reliability of the connection is guaranteed. In practical applications, the valve seat 1110 is mainly used for connecting the valve body 1100 to other components, such as the coil component 1200 and the valve body unit of the electronic expansion valve.

[0037] The sleeve 1120 has a through hole 1121 in its wall, which can serve as a fluid flow channel. The through hole 1121 can connect the inner and outer sides of the sleeve 1120 to balance the pressure on the inner and outer sides of the sleeve 1120. The number and distribution of the through holes 1121 are not limited here. In addition, the sleeve 1120 may also be provided with a valve port passage 1122.

[0038] The end of the sleeve 1120 facing away from the valve port passage 1122 can be connected to the nut 1140. The specific connection method can be welding, bonding, threaded connection, interference fit, etc., and is not limited here, as long as the reliability requirement of the connection can be guaranteed. In some implementations, the nut 1140 can also be connected to the valve seat 1110 to further improve the installation reliability of the nut 1140; the connection method between the nut 1140 and the valve seat 1110 can also be welding, bonding, threaded connection, interference fit, etc., and is not limited here, as long as the reliability requirement of the connection can be guaranteed.

[0039] At least a portion of the valve needle assembly 1150 may be located within the sleeve 1120, and a portion of the lead screw 1130 may be threadedly connected to the nut 1140, and the lead screw 1130 may be connected to the valve needle assembly 1150. Thus, when the lead screw 1130 is driven to rotate relative to the nut 1140, the lead screw 1130 can also drive the valve needle assembly 1150 to move along the axial direction P, thereby achieving the blocking or opening of the valve port passage 1122. The specific structural form of the valve needle assembly 1150 is not the focus of improvement in this application embodiment and is not limited here. In practical applications, those skilled in the art can combine... Figure 2 Or other related technologies, etc., can be used to determine this.

[0040] The rotor 1160 can be fitted onto the nut 1140 and can be directly or indirectly connected to the lead screw 1130. The rotor 1160 and the lead screw 1130 must be able to rotate synchronously. The cover 1170 can be connected to the valve seat 1110. Specific connection methods include welding, bonding, threaded connection, interference fit, etc., which are not limited here, as long as the reliability of the connection is guaranteed. The cover 1170 and the valve seat 1110 cooperate to form a relatively sealed installation space, which can shield the rotor 1160, nut 1140, etc., thereby improving the structural independence and anti-interference capability of the valve body 1100.

[0041] It should be understood that the above description of the specific structure of the valve body 1100 is only a combination of embodiments of the present invention. Figure 2 and Figure 3 This is an exemplary description and should not be construed as limiting the scope of implementation of the valve body unit 1000 provided in the embodiments of the present invention. Under the condition of satisfying the function, the valve body 1100 may also adopt other structural forms.

[0042] Combination Figure 1 and Figure 2The coil component 1200 may be located at least partially outside the cover 1170. The coil component 1200 may be provided with a signal connection part 1210 for connecting with external cables, etc., to control the power supply or power cut-off of the coil component 1200. In the powered state, depending on the direction of the current conducted in the coil component 1200, the rotor 1160 and the lead screw 1130 may rotate in different directions, which can drive the valve needle assembly 1150 to move toward or away from the valve port channel 1122 along the axial direction P, thereby achieving the blocking or opening of the valve port channel 1122.

[0043] As described in the background section, in conventional solutions, the coil component and the valve body are two independent parts. During procurement, the two components must be transported separately, which is inconvenient and relatively costly. During installation, the two components also need to be installed separately, making the installation process relatively cumbersome.

[0044] To address this, in this embodiment of the invention, the valve body unit 1000 may further include a connecting component 1300 and a force-applying component 1400. A portion of the valve body 1100 is inserted into the coil component 1200.

[0045] For ease of description, embodiments of the present invention define a first component 1000A and a second component 1000B. The first component 1000A includes one of a valve body 1100 and a coil component 1200, and a connecting component 1300 connected to or integrally formed with one of the valve body 1100 and the coil component 1200; the second component 1000B includes the other of the valve body 1100 and the coil component 1200.

[0046] The first component 1000A is provided with a mating part 1310. The second component 1000B is provided with a stop part 1111. The mating part 1310 and the stop part 1111 can be directly or indirectly connected along the axial direction P for limiting. A force-applying component 1400 is provided between the stop part 1111 and the first component 1000A along the axial direction P, and the force-applying component 1400 can cause the stop part 1111 to abut against the first component 1000A along the axial direction P.

[0047] With this configuration, the stop portion 1111 of the second component 1000B and the mating portion 1310 of the first component 1000A are connected in a limiting manner along the axial direction P, so that the first component 1000A and the second component 1000B can be connected as a whole. This facilitates centralized transportation and overall installation of the valve body unit 1000, thereby effectively reducing transportation costs and simplifying the installation process of the electronic expansion valve, thus improving installation efficiency.

[0048] Meanwhile, in this embodiment of the invention, a force-applying component 1400 is provided between the stop portion 1111 and the first component 1000A along the axial direction P. The force-applying component 1400 can drive the stop portion 1111 to abut against the first component 1000A along the axial direction P, so that the stop portion 1111 can fit tightly with the first component 1000A. It can also reduce the relative shaking of the first component 1000A and the second component 1000B along the axial direction P, that is, it can improve the connection reliability and connection stability of the first component 1000A and the second component 1000B. This has a relatively positive significance for ensuring the centralized transportation and overall installation of the valve body unit 1000.

[0049] In practical applications, either the valve body 1100 or the coil component 1200 can belong to the first component 1000A. That is, the connecting component 1300 can be installed on either the valve body 1100 or the coil component 1200, and there is no limitation here. For ease of description, the various implementations of the embodiments of the present invention below are described in conjunction with the accompanying drawings. That is, the first component 1000A including the coil component 1200 and the connecting component 1300, and the second component 1000B including the valve body 1100 are used as examples for description. In this case, the stop part 1111 can be located on the valve body 1100. The scheme of the first component 1000A including the valve body 1100 and the connecting component 1300 is similar, and the embodiments of the present invention will not be described separately.

[0050] like Figure 2 As shown, during actual assembly, a portion of the valve body 1100 is inserted into the coil component 1200. Therefore, the maximum outer diameter D1 of the valve body 1100 (generally at the maximum dimension of the valve seat 1110) is usually smaller than the maximum outer diameter D2 of the coil component 1200. In this way, when the first component 1000A includes the coil component 1200, the radial dimension of the final valve body unit 1000 can be significantly reduced, which is beneficial for the miniaturization design of the valve body unit 1000 and also helps to improve the structural compactness of the valve body unit 1000. Combined with... Figure 4 and Figure 5 In this implementation, the stop part 1111 can be specifically set on the valve seat 1110.

[0051] In some alternative implementations, such as Figures 4-7 As shown, the valve seat 1110 may also be provided with a functional part 1112, and the connecting part 1300 may also be provided with the aforementioned mating part 1310. The functional part 1112 and the mating part 1310 may be arranged at intervals along the axial direction P. The coil part 1200 and the valve body 1100 may be displaced relative to each other along the axial direction P to switch between a first state and a second state.

[0052] In the first state, such as Figure 2 As shown, the stop portion 1111 can abut against the coil component 1200 along the axial direction P, with the coil component 1200 serving as the abutment component. The functional portion 1112 and the mating portion 1310 can at least partially overlap along the axial direction P, meaning that the functional portion 1112 can be at least partially located inside the mating portion 1310. In this case, the functional portion 1112 and the mating portion 1310 cooperate to restrict the relative rotation between the coil component 1200 and the valve body 1100, further improving the connection reliability between the coil component 1200 and the valve body 1100.

[0053] In this embodiment of the invention, in order to achieve the anti-rotation of the functional part 1112 and the mating part 1310, the cross-sections of the outer wall surface of the functional part 1112 and the inner wall surface of the mating part 1310 along the direction perpendicular to the axis P can both be set to be non-circular.

[0054] Here, the embodiments of the present invention do not limit the specific type of the non-circular shape. In practical applications, those skilled in the art can select according to specific needs, as long as it meets the requirements of use. For example, the non-circular shape can be a polygon such as a triangle, rectangle, pentagon, or hexagon. Another example is that the non-circular shape can be an ellipse, a kidney-shaped shape, or a shape with at least some curved sides. Yet another example is that the non-circular shape can also be an irregular shape such as a gear tooth.

[0055] In the second state, the stop part 1111 and the coil component 1200 can be spaced apart along the axial direction P. The functional part 1112 and the mating part 1310 can be misaligned along the axial direction P. At this time, the anti-rotation limit of the mating part 1310 relative to the functional part 1112 can be released, and the coil component 1200 and the valve body 1100 can rotate relative to each other. This allows for easy adjustment of the orientation of the signal connection part 1210 relative to the valve body 1100, thus better adapting to the connection requirements of the coil component 1200 and external cables in different scenarios.

[0056] In a specific example, the aforementioned non-circular shape can be a regular polygon, and the number of sides of this regular polygon can be denoted as N. In this example, when the coil component 1200 moves to the second state relative to the valve body 1100 along the axial direction P, it is driven to rotate 360 / N° circumferentially relative to the valve body 1100. The coil component 1200 can then move back to the first state relative to the valve body 1100 along the axial direction P. During this process, the signal connection portion 1210 of the coil component 1200 rotates 360 / N° circumferentially. The above adjustment process can be performed N times. That is, in the first state, the first component 1000A can have N circumferential mounting positions relative to the second component 1000B. In different circumferential mounting positions, the mating surfaces of the functional part 1112 and the mating part 1310 can be different. Correspondingly, the signal connection portion 1210 can also have N circumferential mounting positions, and in different circumferential mounting positions, the orientation of the signal connection portion 1210 can be different.

[0057] It should be understood that in the first state, the stop part 1111 can also abut against the connecting member 1300 along the axial direction P, in which case the connecting member 1300 is the abutting member. Correspondingly, in the second state, the stop part 1111 can be spaced apart from the connecting member 1300 along the axial direction P. This is specifically related to the installation position of the force-applying member 1400 relative to the stop part 1111 and the direction of force application.

[0058] exist Figure 2 and Figure 3 In this design, the force-applying component 1400 can specifically be an elastic component 1410, which can be disposed between the mating part 1310 and the stop part 1111. In the first state, the elastic component 1410 can push against the stop part 1111 and the coil component 1200. When it is necessary to switch to the second state, the control coil component 1200 can be displaced upward relative to the valve body 1100, at which time the compression of the elastic component 1410 can be increased. When the force driving the coil component 1200 to displace disappears, the elastic component 1410 can drive the coil component 1200 to displace downward relative to the valve body 1100 until it returns to the first state.

[0059] In some other embodiments of the present invention, the elastic member 1410 may also be disposed between the stop portion 1111 and the coil member 1200. In this case, in the first state, the elastic member 1410 may abut against the stop portion 1111 and the connecting member 1300. When it is necessary to switch to the second state, the coil member 1200 may be controlled to move downward relative to the valve body 1100 to increase the compression of the elastic member 1410. When the force driving the coil member 1200 to move disappears, the elastic member 1410 may drive the coil member 1200 to move upward relative to the valve body 1100 until it returns to the first state.

[0060] Taking the elastic member 1410 disposed between the stop portion 1111 and the mating portion 1310 as an example, Figures 5-7 As shown, the mating part 1310 may be provided with a first mounting groove 1311, and the stop part 1111 may be provided with a second mounting groove 1111A. One end of the elastic member 1410 may be provided in the first mounting groove 1311, and the other end of the elastic member 1410 may be provided in the second mounting groove 1111A, so as to improve the installation reliability of the elastic member 1410.

[0061] Here, the embodiments of the present invention do not limit the specific structural form of the elastic component 1410. In practical applications, those skilled in the art can select according to specific needs, as long as it can meet the requirements of use. For example, the elastic component 1410 can be a linear spring. There are many types of linear springs, and selection and acquisition are relatively easy. They also have relatively good elastic deformation capabilities, which can better meet the application requirements of the embodiments of the present invention. As another example, the elastic component 1410 can also be an elastomer made of materials with certain elastic deformation capabilities such as rubber, latex, and silicone. This is also feasible.

[0062] In some alternative implementations, in addition to the aforementioned functional part 1112, the valve seat 1110 may also be provided with a threaded part 1113. The functional part 1112 and the threaded part 1113 may be arranged along the axial direction P. The threaded part 1113 is used for mounting and fixing the valve body 1100, specifically for connecting and fixing it to the valve body unit of the electronic expansion valve. The functional part 1112 is used to cooperate with external operating tools such as wrenches to apply a rotational driving force to the valve seat 1110 (i.e., the valve body 1100) through the functional part 1112.

[0063] In this implementation, the coil component 1200 and the valve body 1100 can also be displaced relative to each other along the axial direction P to switch between the first state and the second state.

[0064] In the first state, the stop part 1111 can abut against the coil part 1200 along the axial direction P, and the functional part 1112 can be hidden inside the connecting part 1300. At this time, it is not easy for operating tools such as wrenches to connect with the functional part 1112, that is, it is not easy to drive the valve body 1100 through the functional part 1112.

[0065] In the second state, the stop portion 1111 can be spaced apart from the coil component 1200 along the axial direction P, and the functional portion 1112 can protrude from the connecting component 1300 along the axial direction P, so as to be at least partially exposed on the outside of the connecting component 1300. At this time, operating tools such as wrenches can be connected to the functional portion 1112 relatively easily, so as to drive the valve body 1100 to rotate through the functional portion 1112, thereby realizing the connection or separation of the valve body 1100 and the valve body unit.

[0066] Combination Figure 5 The projection of the functional part 1112 along the axial direction P can at least partially protrude from the projection of the threaded part 1113 along the axial direction P. In this way, a second stepped surface 1114 can be formed between the functional part 1112 and the threaded part 1113. This second stepped surface 1114 can serve as a limiting stepped surface, which can limit the depth of the valve seat 1110 screwed into the valve body unit, thereby improving the connection accuracy between the valve seat 1110 and the valve body unit.

[0067] In some alternative implementations, such as Figure 6 and Figure 7 As shown, the connecting component 1300 may also include an annular body 1320.

[0068] The annular body 1320 may include a small-diameter portion 1321 and a large-diameter portion 1322. The small-diameter portion 1321 and the large-diameter portion 1322 may be arranged along the axial direction P, and a first stepped surface 1323 may be formed between the small-diameter portion 1321 and the large-diameter portion 1322. In specific assembly, the small-diameter portion 1321 may be connected to the coil component 1200. The specific connection method may be welding, bonding, threaded connection, interference fit, etc., which are not limited here, as long as the reliability requirements of the connection can be guaranteed; while the first stepped surface 1323 may abut against the coil component 1200 along the axial direction P to limit the size of the connecting component 1300 inserted into the coil component 1200, thereby improving the connection accuracy between the connecting component 1300 and the coil component 1200.

[0069] For the implementation method of having a mating part 1310, such as Figure 6 and Figure 7 As shown, the mating part 1310 may specifically be located radially inside the large-diameter part 1322.

[0070] Please refer to Figure 8 , Figure 8 for Figure 1 A partial cross-sectional view, in which the force-applying component is a magnetic component.

[0071] In some alternative implementations, such as Figure 8 As shown, the force-applying component 1400 can also be a magnetic component, including a first magnetic part 1420 and a second magnetic part 1430. The first magnetic part 1420 can be mounted on the mating part 1310. The second magnetic part 1430 can be mounted on the stop part 1111. An attractive force or a repulsive force can be generated between the first magnetic part 1420 and the second magnetic part 1430.

[0072] Reference Figure 8 Regarding the orientation and positional relationship, when a repulsive force can be generated between the first magnetic part 1420 and the second magnetic part 1430, in the first state, the stop part 1111 can abut against the coil component 1200. However, when an attractive force can be generated between the first magnetic part 1420 and the second magnetic part 1430, in the first state, the stop part 1111 can abut against the mating part 1310.

[0073] It should be understood that in some other implementations of the present invention, the second magnetic part 1430 may also be mounted on the coil component 1200. In this implementation, when there is a repulsive force between the first magnetic part 1420 and the second magnetic part 1430, in the first state, the stop part 1111 may abut against the connecting component 1300; and when there is an attractive force between the first magnetic part 1420 and the second magnetic part 1430, in the first state, the stop part 1111 may abut against the coil component 1200.

[0074] Please refer to Figure 9 , Figure 9 This is a schematic diagram of the structure of the electronic expansion valve provided in an embodiment of the present invention.

[0075] like Figure 9 As shown, this embodiment of the invention also provides an electronic expansion valve, including a valve body unit 1000 and a valve body unit 2000. The valve body unit 1000 can specifically be the valve body unit 1000 involved in the aforementioned implementations, wherein a portion of the valve body 1100 can be inserted into the valve body unit 2000, and the second component 1000B is connected to the valve body unit 2000.

[0076] Since the valve body unit 1000 in this embodiment of the invention has integrated the valve body 1100 and the coil component 1200, when disassembling and assembling the electronic expansion valve, only the valve body unit 1000 and the valve body unit 2000 need to be disassembled and assembled. The disassembly and assembly operation is relatively simple and efficient.

[0077] As mentioned above, in this embodiment of the invention, the valve body 1100 is mainly used as an example to illustrate the second component 1000B. Therefore, the valve body unit 1000 can be connected to the valve body unit 2000 through the valve body 1100, and the specific connection method can be, for example, a threaded connection.

[0078] Please refer to Figures 10-14 , Figure 10 This is a schematic flowchart of the manufacturing method of the electronic expansion valve provided in the embodiment of the present invention; Figure 11 A flowchart illustrating the configuration of the valve body unit; Figure 12 This is a flowchart illustrating the connection steps; Figure 13 This is a schematic diagram of the pre-connection step; Figure 14 This is a flowchart illustrating the adjustment steps.

[0079] like Figure 10 As shown, this embodiment of the invention also provides a method for manufacturing an electronic expansion valve, which includes at least the following preparation step S100, insertion step S200 and connection step S300.

[0080] Preparation step S100: Configure valve body unit 1000.

[0081] Specifically, the preparation step S100 includes: positioning the force-applying component 1400 along the axial direction P between the stop portion 1111 of the first component 1000A and the second component 1000B. The first component 1000A includes a connecting component 1300 and one of a valve body 1100 or a coil component 1200 connected to or integrally formed with the connecting component 1300. The second component 1000 includes the other of the valve body 1100 or the coil component 1200. A portion of the valve body 1100 is inserted into the coil component 1200 so that the force-applying component 1400 can cause the stop portion 1111 to abut against the first component 1000A along the axial direction P. In this way, the required valve body unit 1000 can be assembled.

[0082] More specifically, such as Figure 11 As shown, the above preparation step S100 may include at least the following steps S110 and S120.

[0083] Step S110: Configure the valve body 1100, coil component 1200, connecting component 1300, and force application component 1400.

[0084] In step S120, a portion of the control valve body 1100 is inserted into the coil component 1200, a force-applying component 1400 is installed, and a connecting component 1300 is connected to one of the valve body 1100 and the coil component 1200 to form a first component 1000A. The other of the valve body 1100 and the coil component 1200 is a second component 1000B, such that the force-applying component 1400 is located between the stop portion 1111 and the first component 1000A along the axial direction P.

[0085] For step S120, the following example is used: the first component 1000A includes a coil component 1200 and a connecting component 1300, and the second component 1000B includes a valve body 1100.

[0086] for Figure 2 In a specific implementation, the valve body 1100 can be partially inserted into the coil component 1200, followed by the installation of the force-applying component 1400, and then the connection component 1300 can be connected to the coil component 1200. In this case, the force-applying component 1400 can be located between the stop portion 1111 and the mating portion 1310 along the axial direction P. In the first state, the stop portion 1111 can abut against the coil component 1200 along the axial direction P.

[0087] In other implementations, such as when the stop portion 1111 abuts against the connecting component 1300 in the first state, step S120 can specifically be as follows: first, install the force-applying component 1111; then, partially insert the valve body 1100 into the coil component 1200; and finally, connect the connecting component 1300 and the coil component 1200. In this case, the force-applying component 1400 can be located between the stop portion 1111 and the coil component 1200 along the axial direction P.

[0088] In the insertion step S200, the valve body 1000 is partially inserted into the valve body unit 2000.

[0089] In step S300, the second component 1000B and the valve body unit 2000 are connected.

[0090] Thus, after the above-described preparation step S100, insertion step S200, and connection step S300, the manufacturing and assembly of the electronic expansion valve provided in the embodiment of the present invention can be completed.

[0091] In some alternative implementations, such as Figure 12 As shown, the connection step S300 may include the following steps S310 and S320.

[0092] In step S310, the first component 1000A and the second component 1000B are driven to move relative to each other along the axial direction P to switch to the second state, so that the functional part 1112 can at least partially protrude from the connecting component 1300 along the axial direction P. In this way, the functional part 1112 can be exposed, and it is convenient to apply a rotational driving force to the second component 1000B subsequently.

[0093] In step S320, the second component 1000B is driven to rotate relative to the valve body unit 2000 by the functional unit 1112, thereby connecting the valve body 1100 and the valve body unit 2000. Specifically, step S320 can be achieved by using an operating tool such as a wrench to connect to the functional unit 1112, so that the functional unit 1112 can apply a rotational driving force, thereby achieving a reliable connection between the second component 1000B and the valve body unit 2000.

[0094] After installation, the first component 1000A and the second component 1000B can return to the first state. At this time, the connecting component 1300 can re-shield the functional part 1112, which can reduce the situation where the functional part 1112 is accidentally driven, and thus can better ensure the reliability of the electronic expansion valve provided by the embodiment of the present invention in the assembled state.

[0095] In some alternative implementations, such as Figure 13 As shown, the manufacturing method provided in this embodiment of the invention may further include step S030 before step S300.

[0096] Step S030: Drive the valve body unit 1000 in the first state to rotate so that the second component 1000B can be pre-connected with the valve body unit 2000.

[0097] As mentioned above, in the first state, the functional part 1112 and the mating part 1310 can interact to enable the first component 1000A and the second component 1000B to rotate synchronously. Thus, by directly rotating the valve body unit 1000, the second component 1000 and the valve body unit 2000 can be pre-connected. After the pre-connection is completed, since the valve body unit 2000 and the valve body unit 1000 have been initially connected and the second component 1000 has been initially fixed, it becomes simple to drive the first component 1000A and the second component 1000B to make relative displacement along the axial direction P to switch to the second state. This facilitates the implementation of the aforementioned steps S310 and S320.

[0098] Here, the embodiments of the present invention do not limit the pre-connection dimensions of the second component 1000B and the valve body unit 2000 in step S030. In practical applications, those skilled in the art can select according to specific needs, as long as the requirements of use are met.

[0099] In some alternative implementations, such as Figure 14 As shown, the manufacturing method provided in this embodiment of the invention may further include an adjustment step S400, which may specifically include steps S410 and S420.

[0100] Step S410: Drive the first component 1000A and the second component 1000B to perform relative displacement along the axial direction P to switch to the second state, thereby releasing the rotation restriction between the first component 1000A and the second component 1000B.

[0101] In step S420, the first component 1000A and the second component 1000B are controlled to rotate relative to each other to switch the mating surfaces of the functional part 1112 and the mating part 1310, thereby switching the orientation of the signal connection part 1210 of the coil component 1200.

[0102] With this approach, even if the valve body unit 1000 has been assembled with the valve body unit 2000, the orientation of the signal connection part 1210 can be easily adjusted, which can better adapt to the connection of the coil component 1200 and the external cable in different scenarios, so that the electronic expansion valve provided by the present invention can have a wider range of compatibility.

[0103] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A valve body unit for an electronic expansion valve, characterized in that, The valve body unit (1000) has an axial direction (P). The valve body unit (1000) includes a first component (1000A), a second component (1000B), and a force-applying component (1400). The first component (1000A) includes a connecting component (1300) and one of a valve body (1100) or a coil component (1200) that is connected to or integral with the connecting component (1300). The second component (1000B) includes the other of the valve body (1100) or the coil component (1200). A portion of the valve body (1100) is inserted into the coil component (1200). The second component (1000B) is provided with a stop (1111), and the first component (1000A) includes a mating part (1310). The mating part (1310) is directly or indirectly connected to the stop (1111) along the axial direction (P). The force-applying component (1400) is disposed between the stop (1111) and the first component (1000A) along the axial direction (P). The force-applying component (1400) enables the stop (1111) to abut against the first component (1000A) along the axial direction (P).

2. The valve body unit of the electronic expansion valve according to claim 1, characterized in that, The second component (1000B) is also provided with a functional part (1112), which is spaced apart from the stop part (1111) along the axial direction (P). The connecting component (1300) is provided with a mating part (1310). The outer wall surface of the functional part (1112) and the inner wall surface of the mating part (1310) are both non-circular in cross-section along the axial direction (P). The first component (1000A) and the second component (1000B) can be displaced relative to each other along the axial direction (P) to switch between a first state and a second state. In the first state, the stop portion (1111) abuts against the first component (1000A) along the axial direction (P), and the functional portion (1112) and the mating portion (1310) overlap at least partially along the axial direction (P), and the functional portion (1112) and the mating portion (1310) cooperate with each other; In the second state, the stop (1111) is spaced apart from the first component (1000A) along the axial direction (P), the functional part (1112) and the mating part (1310) are misaligned along the axial direction (P), and the first component (1000A) and the second component (1000B) can rotate relative to each other.

3. The valve body unit of the electronic expansion valve according to claim 2, characterized in that, Along the axial direction (P), the force-applying component (1400) is disposed between the mating part (1310) and the stop part (1111).

4. The valve body unit of the electronic expansion valve according to claim 3, characterized in that, The force-applying component (1400) is an elastic component (1410), and both ends of the elastic component (1410) abut against the mating part (1310) and the stop part (1111), respectively; or, The force-applying component (1400) includes a first magnetic part (1420) and a second magnetic part (1430). The first magnetic part (1420) is mounted on the mating part (1310), and the second magnetic part (1430) is mounted on the stop part (1111). The magnetic properties of the two opposite ends of the first magnetic part (1420) and the second magnetic part (1430) are the same or opposite.

5. The valve body unit of the electronic expansion valve according to claim 3 or 4, characterized in that, The mating part (1310) is provided with a first mounting groove (1311), and the stop part (1111) is provided with a second mounting groove (1111A). Both the first mounting groove (1311) and the second mounting groove (1111A) are used to install the force-applying component (1400).

6. The valve body unit of the electronic expansion valve according to any one of claims 2 to 5, characterized in that, The connecting component (1300) includes an annular body (1320), which includes a small diameter portion (1321) and a large diameter portion (1322). The small diameter portion (1321) and the large diameter portion (1322) are arranged along the axial direction (P). The annular body (1320) forms a first stepped surface (1323) between the small diameter portion (1321) and the large diameter portion (1322). The mating portion (1310) is located radially inside the large diameter portion (1322).

7. The valve body unit of the electronic expansion valve according to any one of claims 2 to 5, characterized in that, The coil component (1200) has a signal connection part (1210); The non-circular shape is a regular polygon with N sides. In the first state, the first component (1000A) has N circumferential mounting positions relative to the second component (1000B), and the signal connection part (1210) has different orientations in different circumferential mounting positions.

8. The valve body unit of the electronic expansion valve according to any one of claims 1 to 5, characterized in that, The second component (1000B) is provided with a functional part (1112) and a threaded part (1113). The functional part (1112) and the threaded part (1113) are arranged along the axial direction (P). The outer wall surface of the functional part (1112) has a non-circular cross section perpendicular to the axial direction (P). The threaded part (1113) is used for mounting and fixing the second component (1000B). The first component (1000A) and the second component (1000B) are capable of relative displacement along the axial direction (P) to switch between a first state and a second state; In the first state, the stop (1111) abuts against the first component (1000A) along the axial direction (P), and the functional part (1112) is hidden inside the connecting component (1300); in the second state, at least a portion of the functional part (1112) protrudes from the connecting component (1300) along the axial direction (P), and the functional part (1112) can at least drive the second component (1000B) to rotate for the installation or removal of the second component (1000B).

9. An electronic expansion valve, characterized in that, It includes a valve body unit (1000) and a valve body unit (2000), wherein the valve body unit (1000) is the valve body unit (1000) according to any one of claims 1-8, a portion of the valve body (1100) is inserted into the valve body unit (2000), and the second component (1000B) is connected to the valve body unit (2000).

10. A method for manufacturing an electronic expansion valve, characterized in that, The manufacturing method includes: Preparation steps, configuring the valve body unit (1000), including: The force-applying component (1400) is disposed along the axial direction (P) between the stop portion (1111) of the first component (1000A) and the second component (1000B). The first component (1000A) includes a connecting component (1300) and one of a valve body (1100) or a coil component (1200) that is connected to or integral with the connecting component (1300). The second component (1000B) includes the other of the valve body (1100) or the coil component (1200). A portion of the valve body (1100) is inserted into the coil component (1200) so that the force-applying component (1400) can cause the stop portion (1111) to abut against the first component (1000A) along the axial direction (P); In the insertion step, the valve body (1000) is partially inserted into the valve body unit (2000). The connection step involves connecting the second component (1000B) and the valve body unit (2000).

11. The method for manufacturing the electronic expansion valve according to claim 10, characterized in that, The second component (1000B) is provided with a functional part (1112), and the outer wall surface of the functional part (1112) has a non-circular cross section along the direction perpendicular to the axis (P); The connection steps specifically include: The first component (1000A) and the second component (1000B) are driven to make relative displacement along the axial direction (P) so that at least a portion of the functional part (1112) protrudes from the connecting component (1300) along the axial direction (P). The second component (1000B) is driven to rotate relative to the valve body unit (2000) by the functional unit (1112) to connect the second component (1000B) and the valve body unit (2000).

12. The method for manufacturing the electronic expansion valve according to claim 11, characterized in that, The connecting component (1300) is provided with a mating part (1310), and the inner wall surface of the mating part (1310) is also non-circular in cross section along the direction perpendicular to the axis (P); the first component (1000A) and the second component (1000B) can be displaced relative to each other along the axis (P) to switch to a first state; in the first state, the functional part (1112) and the mating part (1310) overlap at least partially along the axis (P), and the functional part (1112) and the mating part (1310) cooperate with each other; The manufacturing method further includes, prior to the connection step, driving the valve body unit (1000) in the first state to rotate, so that the second component (1000B) and the valve body unit (2000) are pre-connected.

13. A method for manufacturing an electronic expansion valve according to any one of claims 10 to 12, characterized in that, The second component (1000B) is further provided with a functional part (1112), and the connecting component (1300) is provided with a mating part (1310). The outer wall surface of the functional part (1112) and the inner wall surface of the mating part (1310) are both non-circular in cross-section along the direction perpendicular to the axis (P). The first component (1000A) and the second component (1000B) can be relatively displaced along the axis (P) to switch between a first state and a second state. In the first state, the functional part (1112) and the mating part (1310) overlap at least partially along the axis (P). The functional part (1112) and the mating part (1310) cooperate to restrict the relative rotation between the first component (1000A) and the second component (1000B). In the second state, the functional part (1112) and the mating part (1310) are misaligned along the axis (P). The manufacturing method further includes a conditioning step, which includes: The first component (1000A) and the second component (1000B) are driven to make relative displacement along the axial direction (P) to switch to the second state; Control the first component (1000A) and the second component (1000B) to rotate relative to each other, thereby switching the mating surfaces of the functional part (1112) and the mating part (1310), and thus switching the orientation of the signal connection part (1210) of the coil component (1200).

14. A method for manufacturing an electronic expansion valve according to any one of claims 10 to 12, characterized in that, The preparation steps include: The valve body (1100), the coil component (1200), the connecting component (1300), and the force-applying component (1400) are configured. The valve body (1100) is partially inserted into the coil component (1200), the force-applying component (1400) is installed, and the connecting component (1300) is connected to one of the valve body (1100) and the coil component (1200) to form a first component (1000A). The other of the valve body (1100) and the coil component (1200) is a second component (1000B), such that the force-applying component (1400) is located between the stop (1111) and the first component (1000A) along the axial direction (P).

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