Electronic expansion valve and air conditioning system with same

Abstract

The utility model provides an electronic expansion valve and an air conditioning system with the electronic expansion valve, the electronic expansion valve comprises a valve body, the valve body is provided with a valve port and a connecting hole, the valve port is communicated with the connecting hole, and the connecting hole is located at the downstream of the valve port; the silencing assembly is arranged in the connecting hole; the connecting pipe assembly comprises an adapter piece and a connecting pipe which are communicated with each other, the adapter piece is provided with a first end and a second end which are oppositely arranged, the first end is connected with the valve body, the second end is communicated with the connecting pipe, the connecting pipe is used for being communicated with a circulation pipeline, and the inner diameter of the first end is larger than that of the second end. By means of the technical scheme, the problem that in the prior art, machining of a connecting pipe of an electronic expansion valve is complex can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, and in particular, to an electronic expansion valve and an air conditioning system having the same. Background Art

[0002] At present, the electronic expansion valve can be applied to the field of series reheat dehumidification. Since the electronic expansion valve is arranged between two indoor heat exchangers in this application, it is determined that under normal air conditioning conditions, the pressure drop of the electronic expansion valve at a large opening degree should be small enough to ensure the capacity of the air conditioning system; and since the electronic expansion valve is arranged indoors, the requirement for noise is also relatively high. Based on this, a porous sound-absorbing structure can be arranged at the valve port of the electronic expansion valve to reduce the noise of the refrigerant flow.

[0003] The porous sound-absorbing structure will inevitably throttle the fluid at the valve port, affecting the flow capacity of the electronic expansion valve. Therefore, a large-diameter electronic expansion valve can be adopted and the area of the sound-absorbing structure can be increased to reduce the influence of the sound-absorbing structure at the valve port on the flow capacity of the whole valve, ensuring that the flow capacity of the electronic expansion valve can meet the requirements of the whole machine under normal air conditioning conditions; referring to Figure 1 As shown, in the traditional technical solution, the connecting pipe extends into the valve seat and directly abuts against the sound-absorbing structure for limiting. One end of the connecting pipe abuts against the sound-absorbing structure, and a relatively large outer diameter is required for the end abutting against the sound-absorbing structure to match the diameter of the sound-absorbing structure; at the same time, in the series reheat dehumidification system, the electronic expansion valve is mainly applied to 1-3p units, and the inner diameter of the connecting pipe of the indoor heat exchanger corresponding to it is relatively small compared with units above 3P. The other end of the connecting pipe of the electronic expansion valve is connected to the connecting pipe of the indoor heat exchanger, which determines that the inner diameter of the other end of the connecting pipe of the electronic expansion valve is small. The diameters of the two ends of the connecting pipe of the electronic expansion valve are inconsistent and the span is large. The scheme of using the connecting pipe to abut against the sound-absorbing mechanism makes the connecting pipe composed of three or more different diameters, such as Figure 1 In the shown electronic expansion valve, the connecting pipe has a first reduced-diameter structure 1, a second reduced-diameter structure 2 and a third reduced-diameter structure 3 to meet the connecting pipe. Such a connecting pipe is difficult to process and has a high cost. Summary of the Utility Model

[0004] The utility model provides an electronic expansion valve and an air conditioning system having the same to solve the problem that the connecting pipe of the electronic expansion valve in the prior art is relatively complex to process.

[0005] According to one aspect of the present utility model, an electronic expansion valve is provided. The electronic expansion valve includes: a valve body having a valve port and a connection hole, the valve port being in communication with the connection hole, and the connection hole being located downstream of the valve port; a silencing component disposed in the connection hole; a connection pipe assembly including an adapter and a connection pipe that are in communication with each other. The adapter has a first end and a second end disposed opposite to each other. The first end is connected to the valve body, and the second end is in communication with the connection pipe. The connection pipe is used to communicate with a flow passage, and the inner diameter of the first end is greater than the inner diameter of the second end.

[0006] Further, the adapter includes a transfer pipe having a first section and a second section that are in communication with each other. One end of the first section away from the second section forms the first end, and one end of the second section away from the first section forms the second end. The inner diameter of the first section is greater than the inner diameter of the second section, and there is a stepped surface between the outer wall of the first section and the outer wall of the second section.

[0007] Further, one end of the silencing component away from the valve port is in riveted fit with the connection hole.

[0008] Further, one end of the silencing component away from the valve port is connected to the connection hole by laser welding.

[0009] Further, a fixing ring is also disposed in the connection hole. The fixing ring is disposed on the side of the silencing component away from the valve port, and the fixing ring is connected to the connection hole by laser welding.

[0010] Further, a limiting structure is also disposed in the connection hole. The limiting structure is disposed on the side of the silencing component facing the valve port, and the limiting structure is used to limit the displacement of the silencing component towards the valve port.

[0011] Further, the connection pipe is inserted into the second section, and the connection pipe is connected to the transfer pipe by welding.

[0012] Further, the adapter includes a transfer pipe, and the transfer pipe is in plug-in fit with the valve body. There is an abutting surface on the outer side wall of the valve body, and the end surface of the first end abuts against the abutting surface.

[0013] Further, the adapter includes a transfer pipe, and the transfer pipe is connected to the side wall of the valve body by laser welding.

[0014] Further, along the extending direction of the connection pipe, the connection pipe is a straight hole structure, or the connection pipe includes a straight line segment and a matching segment connected to each other. The straight line segment is a straight hole structure, and the matching segment is a flared structure or a tapered structure. The straight line segment is connected to the transfer pipe, and the matching segment is connected to the flow passage.

[0015] According to another aspect of the present application, an air conditioning system is provided. The air conditioning system includes a compressor, an indoor heat exchanger, and an outdoor heat exchanger that are interconnected. The indoor heat exchanger includes a first heat exchanger and a second heat exchanger. An electronic expansion valve is disposed between the first heat exchanger and the second heat exchanger, and the electronic expansion valve is the above-mentioned electronic expansion valve.

[0016] Further, the first heat exchanger and the second heat exchanger are connected through a flow pipeline. The electronic expansion valve is disposed on the flow pipeline, and the connecting pipe of the electronic expansion valve is connected to the flow pipeline. The diameter of the valve port of the electronic expansion valve is larger than the inner diameter of the flow pipeline.

[0017] Applying the technical solution of the present utility model, the electronic expansion valve includes a valve body, a silencing component, and a connecting pipe component. The silencing component can comb the bubbles in the fluid and reduce the noise generated when the fluid flows in the pipeline. Moreover, by separately disposing the connecting pipe component into an adapter and a connecting pipe that are interconnected, and setting the inner diameter of the first end of the adapter to be larger than that of the second end, the adapter itself can form a stepped structure to adapt to different sizes of the valve body and the flow pipeline. There is no need to set a stepped structure on the connecting pipe to adapt to a large-diameter valve body. Only the appropriate raw material needs to be selected according to the diameter of the electronic expansion valve to process the connecting piece, so as to reduce the processing difficulty of the connecting pipe and improve the overall processing efficiency of the connecting pipe component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0019] Figure 1 shows a schematic structural diagram of an existing electronic expansion valve provided in the background art;

[0020] Figure 2 shows a schematic structural diagram of the electronic expansion valve provided in the first embodiment of the present utility model;

[0021] Figure 3 shows a schematic structural diagram of the electronic expansion valve provided in the second embodiment of the present utility model;

[0022] Figure 4 shows Figure 2 a partial enlarged view of part A in

[0023] Figure 5 shows Figure 3 a partial enlarged view of part B in

[0024] Figure 6 shows a schematic structural diagram of the air conditioning system provided by the present utility model.

[0025] The above drawings include the following reference numerals:

[0026] 1. First variable diameter structure; 2. Second variable diameter structure; 3. Third variable diameter structure;

[0027] 10. Valve body;

[0028] 11. Valve port; 12. Connecting hole; 13. Fixing ring; 14. Abutment surface;

[0029] 20. Silencer assembly;

[0030] 21. First muffler block; 22. Second muffler block; 23. Support ring;

[0031] 30. Take over the components;

[0032] 31. Transfer of management;

[0033] 311, first section; 312, second section; 313, stepped surface;

[0034] 32. Connecting pipe;

[0035] 100, compressor; 200, indoor heat exchanger; 210, first heat exchanger; 220, second heat exchanger; 300, outdoor heat exchanger; 400, electronic expansion valve. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] like Figure 2 and Figure 3 As shown, an embodiment of the present invention provides an electronic expansion valve, which includes a valve body 10, a silencer assembly 20, and a pipe assembly 30. The valve body 10 has a valve port 11 and a connecting hole 12, which are connected to the connecting hole 12, and the connecting hole 12 is located downstream of the valve port 11. The silencer assembly 20 is disposed in the connecting hole 12. The pipe assembly 30 includes an adapter and a connecting pipe 32 that are connected to each other. The adapter has a first end and a second end that are arranged opposite to each other. The first end is connected to the valve body 10, and the second end is connected to the connecting pipe 32. The connecting pipe 32 is used to connect to the circulation pipeline, and the inner diameter of the first end is larger than the inner diameter of the second end.

[0038] Applying the technical solution of the present utility model, the electronic expansion valve includes a valve body 10, a silencing component 20, and a connecting pipe component 30. The silencing component 20 can comb the bubbles in the fluid and reduce the noise generated when the fluid flows in the pipeline. Moreover, by separately setting the connecting pipe component 30 into a connecting piece and a connecting pipe 32 that are interconnected, and setting the inner diameter of the first end of the connecting piece to be larger than the inner diameter of the second end, the connecting piece itself can form a reduced-diameter structure to adapt to valve bodies 10 and flow pipelines of different sizes. There is no need to set a reduced-diameter structure on the connecting pipe 32 to adapt to a large-diameter valve body 10. Only appropriate raw materials need to be selected according to the diameter of the electronic expansion valve to process the connecting piece, so as to reduce the processing difficulty of the connecting pipe 32 and improve the overall processing efficiency of the connecting pipe component 30.

[0039] Specifically in this application, the inner diameter of the connecting piece is larger than the inner diameter of the valve port 11. With such a setting, it can prevent the connecting piece from throttling the fluid passing through the valve port 11 and ensure the fluid flow efficiency.

[0040] In a feasible embodiment of this application, the connecting piece can be formed by turning the material or made of a pipe fitting.

[0041] Specifically, the connecting piece includes a connecting pipe 31. The connecting pipe 31 has a first section 311 and a second section 312 that are interconnected. One end of the first section 311 away from the second section 312 forms a first end, and one end of the second section 312 away from the first section 311 forms a second end. The inner diameter of the first section 311 is larger than the inner diameter of the second section 312, and there is a stepped surface 313 between the outer wall of the first section 311 and the outer wall of the second section 312. Through the above setting, the first section 311 and the second section 312 of the connecting pipe 31 can form a reduced-diameter structure to realize the connection between the valve body 10 and the connecting pipe 32, reduce the processing difficulty of the connecting pipe 32, and moreover, by setting the connecting pipe 31 into a segmented structure, the stepped surface 313 formed between the outer side walls of the first section 311 and the second section 312 can form a relatively large positioning surface, which is convenient for the tooling positioning during the installation of other parts such as nuts, rotors, and sleeves, and is convenient for the overall assembly of the electronic expansion valve. In the traditional technical solution, refer to Figure 1As shown, the adapter is inserted into the valve body, and the filter screen is limited by the adapter. The end face of the valve body facing one end of the adapter forms a positioning surface. In order to ensure the flow area of the filter screen, the diameter of the filter screen is also set to be relatively large. Correspondingly, the diameter of the end of the adapter connected to the valve body is also set to be relatively large. In order to reduce the occupied space of the electronic expansion valve, the volume of the valve body of the electronic expansion valve is usually set to be relatively small. In this way, it is necessary to reduce the thickness of the valve body side wall, which will result in a relatively small area of the positioning surface, which is not conducive to the tooling positioning during part installation. Moreover, the adapter needs to be directly connected to the valve body by welding. After the connection between the valve body and the adapter is welded, the solder is easily accumulated on the positioning surface due to the melting of the solder, affecting the positioning reference of the positioning surface. In this application, by connecting the connecting pipe 32 to the second section 312, it is possible to prevent the solder from flowing to and accumulating on the stepped surface 313, thereby ensuring the accuracy of the positioning of the stepped surface 313.

[0042] Specifically in this application, the connecting pipe 32 is inserted into the second section 312, and the connecting pipe 32 and the adapter 31 are connected by welding. Specifically, the welding method can be selected from furnace brazing or laser welding, etc.

[0043] Specifically in this application, the connecting pipe 32 can be processed by stamping or stretching processes to reduce the processing difficulty of the connecting pipe 32 and reduce the manufacturing cost of the connecting pipe 32.

[0044] In this application, the silencing component 20 is fixedly arranged in the connecting hole 12. Refer to Figure 1 As shown, in the prior art, the adapter is inserted into the valve body, and the adapter is in abutting fit with the silencing component to limit the silencing component. In this way, when the adapter is welded to the valve body, the molten solder may flow to the silencing component under the capillary action of the gap between the adapter and the valve body. The silencing component is a porous structure, and it is easy for the solder to adhere to the silencing component after flowing to the silencing component, affecting the silencing effect of the silencing component. In this application, by fixedly arranging the silencing component in the connecting hole 12, the silencing component 20 does not directly abut against the connecting pipe 32. After the connecting pipe 32 and the adapter 31 are welded, the solder will flow into the gap between the connecting pipe 32 and the adapter 31 under the capillary action. The position where the solder is placed and melted is separated from the silencing component 20 by the chamber of the adapter 31, and the molten solder cannot penetrate onto the silencing component 20, thereby being able to ensure the silencing effect of the silencing component 20 and further reducing the noise of the fluid.

[0045] Refer to 2 and Figure 4 As shown, in the first embodiment provided in this application, the end of the silencing component 20 away from the valve port 11 and the connecting hole 12 are in riveting fit. Through the above setting, the silencing component 20 can be restricted in the connecting hole 12 by the valve body 10 itself.

[0046] Refer to 3 and Figure 5As shown in the figure, in the second embodiment provided by the present application, a fixing ring 13 is further arranged in the connecting hole 12. The fixing ring 13 is arranged on the side of the silencing component 20 away from the valve port 11. The fixing ring 13 and the connecting hole 12 are connected by laser welding. Through the above arrangement, the fixing ring 13 can be fixedly arranged on the inner wall of the connecting hole 12 by laser welding, so that the fixing ring 13 can support the silencing component 20. Through the fixing ring 13, the silencing component 20 can be prevented from moving away from the valve port 11, ensuring the stability of the installation of the silencing component 20.

[0047] Furthermore, a limiting structure is further arranged in the connecting hole 12. The limiting structure is arranged on the side of the silencing component 20 facing the valve port 11. The limiting structure is used to limit the displacement of the silencing component 20 towards the valve port 11. Specifically, the connecting hole 12 includes a communicating flow cavity and an installation cavity. The flow cavity is located on the side close to the valve port 11. There is a limiting surface between the flow cavity and the installation cavity. The limiting surface abuts against the silencing component 20 and is used to limit the displacement of the silencing component 20 towards the valve port 11. The limiting surface forms the limiting structure. With such an arrangement, the stability of the installation of the silencing component 20 in the connecting hole 12 can be further ensured, and the silencing component 20 can be prevented from falling off under the impact of the fluid. The electronic expansion valve is usually arranged in a two-way flow air-conditioning system. By limiting the displacement of the silencing component 20 towards the valve port 11 and away from the valve port 11, the stability of the installation of the silencing component 20 in the valve body 10 can be ensured as much as possible, and the use effect of the electronic expansion valve can be guaranteed.

[0048] Specifically, the silencing component 20 includes a silencing structure which has a flow-through area and a decomposition area. Bubbles in the fluid flowing through the silencing component can be decomposed through the decomposition area. The silencing structure includes: a first silencing block 21 and a second silencing block 22. The first silencing block 21 and the second silencing block 22 are arranged at intervals along the flow direction of the fluid. Both the first silencing block 21 and the second silencing block 22 are provided with a flow-through area and a decomposition area. Among them, at least part of the flow-through area provided on the first silencing block 21 is correspondingly arranged with the decomposition area provided on the second silencing block 22, and at least part of the flow-through area provided on the second silencing block 22 is correspondingly arranged with the decomposition area provided on the first silencing block 21. In this application, by setting at least part of the flow-through area provided on the first silencing block 21 to be correspondingly arranged with the decomposition area provided on the second silencing block 22, and at least part of the flow-through area provided on the second silencing block 22 to be correspondingly arranged with the decomposition area provided on the first silencing block 21, that is, at least part of the projection of the flow-through area of the first silencing block 21 on the second silencing block 22 coincides with the decomposition area of the second silencing block 22; at least part of the projection of the flow-through area of the second silencing block 22 on the first silencing block 21 coincides with the decomposition area of the first silencing block 21. In this way, the bubbles in the fluid mixed with impurities can still flow through the decomposition area on the first silencing block 21 or the second silencing block 22 again for decomposition after flowing through the flow-through area on the first silencing block 21 or the second silencing block 22, improving the decomposition effect of the silencing component, and further improving the noise reduction ability of the silencing component.

[0049] Specifically, the first silencing block 21 and the second silencing block 22 are sintered filter blocks. The first silencing block 21 has first through-holes, and the second silencing block 22 has a plurality of second through-holes. The first through-holes form the flow-through area on the first silencing block 21, and the second through-holes form the flow-through area on the second silencing block 22. The sintered filter block is woven from metal wires or alloy wires and then sintered with each other by high-temperature heating to form a uniform block-shaped filter material, which has high strength and stability and can effectively play a filtering role.

[0050] Specifically in this application, the connection hole 12 can be directly integrally formed by the valve body 10, or can be formed by a connecting piece and then assembled with the valve body 10.

[0051] In other embodiments of this application, one end of the silencing component 20 made of a sintered filter block away from the valve port 11 can be connected to the connection hole 12 by laser welding. With such a setting, the silencing component 20 can be fixed in the connection hole 12, and compared with the first and second embodiments of this application, the connection is more convenient, without the need to use auxiliary parts, improving the assembly efficiency of the electronic expansion valve.

[0052] Furthermore, a support ring 23 is provided between the first sound-absorbing block 21 and the second sound-absorbing block 22. The support ring 23 is arranged on the periphery of the second sound-absorbing block 22. By providing the support ring 23, the relative displacement between the first sound-absorbing block 21 and the second sound-absorbing block 22 can be restricted by the support ring 23, preventing the first sound-absorbing block 21 or the second sound-absorbing block 22 from displacing under the impact of the fluid and ensuring the stability of the first sound-absorbing block 21 and the second sound-absorbing block 22.

[0053] Specifically, the adapter pipe 31 is inserted and cooperated with the valve body 10. An abutting surface 14 is provided on the outer side wall of the valve body 10. The end surface of the first end of the adapter pipe 31 abuts against the abutting surface 14. Through the above arrangement, the abutting surface 14 can restrict the displacement of the adapter pipe 31 relative to the valve body 10, providing a positioning basis for the adapter pipe 31 and ensuring that the adapter pipe 31 can be installed in place.

[0054] Specifically in this application, the adapter pipe 31 is connected to the side wall of the valve body 10 by laser welding. Laser welding can accurately focus on a very small area to achieve high-precision welding, and the heat-affected area generated by laser welding is relatively small, reducing the impact of the welding work on the adapter pipe 31 and ensuring the structural performance of the adapter pipe 31 itself.

[0055] In some embodiments of this application, along the extending direction of the connecting pipe 32, the connecting pipe 32 is a straight-hole structure. With this arrangement, the structure of the connecting pipe 32 can be simplified, facilitating the processing and forming of the connecting pipe 32.

[0056] In still other embodiments of this application, along the extending direction of the connecting pipe 32, the connecting pipe 32 includes a straight line segment and a mating segment connected to each other. The straight line segment is a straight-hole structure, and the mating segment is a flared structure or a reduced-diameter structure. The straight line segment is connected to the adapter pipe 31, and the mating segment is connected to the flow pipeline. With this arrangement, it is convenient to connect the connecting pipe 32 to the flow pipeline of the client.

[0057] Specifically, the straight-hole structure in this application means that along the extending direction of the connecting pipe 32, the inner diameter of the pipeline remains unchanged; the flared structure in this application means that the inner diameter of the mating segment connected to the flow pipeline is larger than the inner diameter of the straight line segment; the reduced-diameter structure in this application means that the inner diameter of the mating segment connected to the flow pipeline is smaller than the inner diameter of the straight line segment.

[0058] This application also provides an air-conditioning system. The dehumidifying electronic expansion valve provided by this application is applied to Figure 6The air conditioning system shown includes a compressor 100, an indoor heat exchanger 200, and an outdoor heat exchanger 300 that are interconnected. The indoor heat exchanger 200 includes a first heat exchanger 210 and a second heat exchanger 220. An electronic expansion valve 400 is provided between the first heat exchanger 210 and the second heat exchanger 220, and the electronic expansion valve 400 is the above-mentioned electronic expansion valve. With the above arrangement, when the air conditioning system is in the cooling or heating mode, the electronic expansion valve 400 is in the fully open state, and the first heat exchanger 210 and the second heat exchanger 220 can be regarded as an integral heat exchanger for heat release or heat absorption; when the air conditioning system is in the dehumidification mode, the second heat exchanger 220 is a condenser, and the refrigerant fluid releases heat through the second heat exchanger 220. After the refrigerant fluid flows out of the second heat exchanger 220, it enters the electronic expansion valve 400. The electronic expansion valve 400 can control the flow rate of the refrigerant fluid, so that the refrigerant fluid passes through the electronic expansion valve 400 with a smaller flow rate for throttling and pressure reduction. At this time, the first heat exchanger 210 acts as an evaporator to absorb heat, and the fan drives the indoor humid air to pass through the heat-absorbing first heat exchanger 210, causing the water vapor to condense, achieving a dehumidification effect. At the same time, the indoor second heat exchanger 220 acts as a condenser, raising the temperature of the indoor air, that is, the air passes through the first heat exchanger 210 for dew condensation and dehumidification and passes through the second heat exchanger 220 for temperature rise, and continuously circulates under the action of the fan, thereby achieving the effect of dehumidification without temperature reduction and improving the user experience. Moreover, by applying the technical solution provided by the present utility model, it is also possible to reduce the overall processing difficulty of the electronic expansion valve, reduce the overall manufacturing cost of the connecting pipe 32, and reduce the processing difficulty and manufacturing cost of the overall air conditioning system.

[0059] Specifically, the first heat exchanger 210 and the second heat exchanger 220 are connected through a flow-through pipeline, and the electronic expansion valve 400 is arranged on the flow-through pipeline. The connecting pipe 32 of the electronic expansion valve 400 is connected to the flow-through pipeline, and the minimum diameter at the valve port 11 is greater than the inner diameter of the flow-through pipeline, which can ensure that the fluid does not generate obvious throttling when flowing through the electronic expansion valve 400 and ensure the normal flow of the fluid between the first heat exchanger 210 and the second heat exchanger 220.

[0060] Specifically, in the air conditioning system provided in the present application, the inner diameter of the connecting pipe 32 is greater than the inner diameter of the flow-through pipeline. With the above arrangement, it can be avoided that when the connecting pipe 32 is connected to the flow-through pipeline, the fluid generates a pressure drop when flowing through the connecting pipe 32 and the electronic expansion valve 400 provided in the present application, thereby further ensuring the flow efficiency of the refrigerant fluid when flowing through the electronic expansion valve 400.

[0061] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0062] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not require further discussion in subsequent drawings.

[0063] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0064] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding interpretations of the spatial relative descriptions used herein will be made accordingly.

[0065] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0066] The above are only the preferred embodiments of the present utility model, and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An electronic expansion valve, characterized in that, The electronic expansion valve includes: A valve body (10) having a valve port (11) and a connection hole (12), the valve port (11) communicating with the connection hole (12), and the connection hole (12) being located downstream of the valve port (11); A silencing component (20) disposed within the connection hole (12); A pipe connection component (30), the pipe connection component (30) including an adapter and a connection pipe (32) that communicate with each other, the adapter having a first end and a second end disposed opposite to each other, the first end being connected to the valve body (10), the second end communicating with the connection pipe (32), the connection pipe (32) being used to communicate with a flow pipeline, and the inner diameter of the first end being greater than the inner diameter of the second end.

2. The electronic expansion valve according to claim 1, wherein The adapter includes a transfer pipe (31), the transfer pipe (31) having a first section (311) and a second section (312) that communicate with each other, one end of the first section (311) remote from the second section (312) forming the first end, one end of the second section (312) remote from the first section (311) forming the second end, the inner diameter of the first section (311) being greater than the inner diameter of the second section (312), and there being a stepped surface (313) between the outer wall of the first section (311) and the outer wall of the second section (312).

3. The electronic expansion valve according to claim 1, characterized in that, One end of the silencing component (20) remote from the valve port (11) is in riveted fit with the connection hole (12).

4. The electronic expansion valve according to claim 1, wherein, One end of the silencing component (20) remote from the valve port (11) is connected to the connection hole (12) by laser welding.

5. The electronic expansion valve according to claim 1, characterized in that, A fixing ring (13) is further disposed within the connection hole (12), the fixing ring (13) being disposed on a side of the silencing component (20) remote from the valve port (11), and the fixing ring (13) being connected to the connection hole (12) by laser welding.

6. The electronic expansion valve according to claim 1, characterized in that, A limiting structure is further disposed within the connection hole (12), the limiting structure being disposed on a side of the silencing component (20) facing the valve port (11), and the limiting structure being used to limit the displacement of the silencing component (20) towards the valve port (11).

7. The electronic expansion valve according to claim 2, wherein The connection pipe (32) is inserted into the second section (312), and the connection pipe (32) is connected to the transfer pipe (31) by welding.

8. The electronic expansion valve according to claim 1, wherein, The adapter includes a transfer pipe (31), the transfer pipe (31) being in plug-in fit with the valve body (10), and the outer side wall of the valve body (10) having an abutting surface (14), the end surface of the first end abutting against the abutting surface (14).

9. The electronic expansion valve according to claim 1, wherein, The adapter includes a transfer pipe (31), the transfer pipe (31) being connected to the side wall of the valve body (10) by laser welding.

10. The electronic expansion valve according to claim 2, wherein, Along the extending direction of the connection pipe (32), the connection pipe (32) is a straight hole structure, or, the connection pipe (32) includes a straight line segment and a mating segment connected to each other, the straight line segment being a straight hole structure, the mating segment being a flared structure or a reduced-diameter structure, the straight line segment being connected to the transfer pipe (31), and the mating segment being connected to the flow pipeline.

11. An air conditioning system, characterized in that, The air conditioning system includes a compressor (100), an indoor heat exchanger (200), and an outdoor heat exchanger (300) that are interconnected. The indoor heat exchanger (200) includes a first heat exchanger (210) and a second heat exchanger (220). An electronic expansion valve (400) is provided between the first heat exchanger (210) and the second heat exchanger (220), and the electronic expansion valve (400) is the electronic expansion valve described in any one of claims 1 to 10.

12. The air conditioning system according to claim 11, wherein, The first heat exchanger (210) and the second heat exchanger (220) are connected through a flow pipeline. The electronic expansion valve (400) is provided on the flow pipeline. A connecting pipe (32) of the electronic expansion valve (400) is connected to the flow pipeline, and the diameter of the valve port (11) of the electronic expansion valve is larger than the inner diameter of the flow pipeline.

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