CN217898882U - Electronic expansion valve - Google Patents

Abstract

The utility model provides an electronic expansion valve, it includes: the valve seat is provided with an assembling end and a valve port end, and the valve port end is provided with a valve port; the sleeve is connected with the assembling end of the valve seat and forms an assembling cavity; the valve core assembly is movably arranged in the assembly cavity and used for adjusting the flow at the valve opening; one end of the flow dividing part is provided with a mounting opening, and the mounting opening is connected with the assembling end of the valve seat; the flow dividing part is internally provided with a cavity, and the valve port end is positioned in the cavity; the flow dividing part is provided with an inlet channel and a plurality of flow dividing channels, and the inlet channel, the valve port and the flow dividing channels are communicated in sequence. Through the technical scheme provided by the application, the problems of violent disturbance and more turbulence in the process that fluid flows from the inlet channel to the flow dividing channel in the prior art can be solved.

Description

Electronic expansion valve

Technical Field

The utility model relates to the technical field of valves, particularly, relate to an electronic expansion valve.

Background

An electronic expansion valve with a flow dividing function generally includes a body portion and a flow dividing portion, wherein the body portion includes a first housing and a valve core assembly, the first housing has an accommodating cavity and a valve port which are communicated with each other, the valve port is disposed at one end of the first housing, the first housing further has an inlet channel, the inlet channel is disposed on a side wall of the first housing and is communicated with the accommodating cavity, and the valve core assembly is movably disposed in the accommodating cavity and is used for opening or closing the valve port. The reposition of redundant personnel portion has installing port, intercommunication chamber and a plurality of reposition of redundant personnel passageway that communicate in proper order along the axis direction, and wherein, the one end setting that is provided with the valve port of first casing is in first installing port department, and valve port and intercommunication chamber intercommunication, and a plurality of reposition of redundant personnel passageways are along the circumference interval distribution of reposition of redundant personnel portion, and a plurality of reposition of redundant personnel passageways's one end communicates with the intercommunication chamber respectively, and the other end extends to on the global or the terminal surface of reposition of redundant personnel portion. However, the distance between the inlet channel and the flow dividing channel of the electronic expansion valve is relatively long, and the disturbance is severe and the turbulence is high in the process that the fluid flows from the inlet channel to the flow dividing channel, which may affect the normal operation of the electronic expansion valve.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electronic expansion valve to fluid among the solution prior art flows to the in-process of reposition of redundant personnel passageway by inlet channel, and the disturbance is violent, the more problem of turbulent flow.

The utility model provides an electronic expansion valve, it includes: the valve seat is provided with an assembling end and a valve port end, and the valve port end is provided with a valve port; the sleeve is connected with the assembling end of the valve seat and forms an assembling cavity; the valve core assembly is movably arranged in the assembly cavity and used for adjusting the flow at the valve opening; one end of the flow dividing part is provided with a mounting opening, and the mounting opening is connected with the assembling end of the valve seat; the flow dividing part is internally provided with a cavity, and the valve port end is positioned in the cavity; the flow dividing part is provided with an inlet channel and a plurality of flow dividing channels, and the inlet channel, the valve port and the flow dividing channels are communicated in sequence.

Use the technical scheme of the utility model, disk seat and sleeve pipe form the casing, through setting up the disk seat in the cavity of reposition of redundant personnel portion to make entrance channel set up in the reposition of redundant personnel portion, can reduce the interval between entrance channel and the reposition of redundant personnel passageway, guarantee electronic expansion valve's normal operating. Specifically, the inlet channel is arranged on the flow dividing part, and in the working process of the electronic expansion valve, fluid flows out through the flow dividing channel after sequentially passing through the inlet channel and the valve port. In the electronic expansion valve in the conventional technical scheme, in the working process, fluid flows into the shell from the inlet channel arranged on the sleeve, flows into the flow dividing part through the valve port, and finally flows out through the flow dividing channel. Compared with the traditional technical scheme, the design of the scheme reduces the distance between the inlet channel and the flow dividing channel, so that the disturbance degree is reduced and the turbulence is reduced in the process of fluid from the inlet channel to the flow dividing channel, and the normal operation of the electronic expansion valve is ensured.

Furthermore, the cavity is divided into a first cavity and a second cavity by the valve port end, the inlet channel is arranged on the wall surface of the flow dividing part where the first cavity is located, and the flow dividing channel is arranged on the wall surface of the flow dividing part where the second cavity is located.

Further, the valve seat is provided with a middle channel; the inlet and the outlet of the middle channel are respectively communicated with the first cavity and the valve port.

Further, the inlet passage includes a first bore section and a second bore section arranged along a radial step of the flow dividing portion, the first bore section communicating with the first chamber, the first bore section having a diameter smaller than a diameter of the second bore section. So set up, can conveniently assemble external entry passageway pipe and reposition of redundant personnel portion.

Further, the surface of the valve opening end close to the assembling end is positioned on one side of the axis of the first hole section close to the flow distribution channel, and the distance between the axis of the first hole section and the surface of the valve opening end close to the assembling end is larger than or equal to the radius of the first hole section along the axis direction of the flow distribution part. By means of the arrangement, the smoothness of fluid circulation can be guaranteed.

Furthermore, a shunting cone opposite to the valve port is arranged at the bottom end of the second chamber, and the shunting channel is positioned at the bottom end of the second chamber; the plurality of flow distribution channels are uniformly distributed along the circumferential direction of the flow distribution cone.

Further, the end of the splitter cone is conical, and the diameter of the splitter cone is gradually increased from the assembling end to the valve port end.

Further, the first chamber is annularly surrounded on the periphery of the valve seat, and the inner diameter of the first chamber is the same as that of the second chamber. By the arrangement, convenience in processing of the shunt part can be guaranteed.

Further, the electronic expansion valve comprises a first sealing element, the first sealing element is annularly arranged between the valve port end and the cavity, and the first sealing element is used for sealing a gap between the valve port end and the cavity; the electronic expansion valve comprises a second sealing member which is annularly arranged between the assembling end and the mounting opening, and the second sealing member is used for sealing a gap between the assembling end and the mounting opening. By the arrangement, the sealing performance of the electronic expansion valve can be improved.

Furthermore, a first mounting groove is annularly formed in the peripheral surface of the valve port end, the first mounting groove and the valve port end are coaxially arranged, and a first sealing element is arranged in the first mounting groove; the electronic expansion valve is also provided with a second mounting groove which is annularly arranged at the bottom of the mounting opening and is coaxially arranged with the mounting opening, a second sealing element is arranged in the second mounting groove, and the second sealing element is in butt joint with the end face, close to the valve opening end, of the assembling end. So set up, its simple structure, and sealed effect is excellent.

Furthermore, the mounting port is provided with an internal thread, the outer peripheral surface of the assembling end is provided with an external thread, and the assembling end and the mounting port are in threaded connection through the internal thread and the external thread. Above-mentioned setting can conveniently assemble electronic expansion valve.

Further, the projection of the outlet of the inlet channel on the outer circumferential surface of the valve seat is arranged in a staggered manner with the inlet of the middle channel. So set up, can avoid inlet channel's fluid to strike case subassembly, guarantee the stability of case subassembly.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 shows a schematic view of a partial structure of an electronic expansion valve provided by the present invention;

fig. 2 shows a cross-sectional view of an electronic expansion valve provided by the present invention;

fig. 3 is a cross-sectional view illustrating the engagement of the valve seat with the flow dividing portion provided by the present invention;

FIG. 4 illustrates a cross-sectional view of a valve seat provided by the present invention;

fig. 5 shows a schematic partial structure diagram of a valve seat provided by the present invention;

fig. 6 shows a schematic structural view of the flow dividing part provided by the present invention;

fig. 7 shows a front view of the flow dividing portion provided by the present invention;

fig. 8 shows a cross-sectional view of one of the flow dividing portions provided by the present invention;

fig. 9 shows a cross-sectional view of another shunt part provided by the present invention.

Wherein the figures include the following reference numerals:

10. a valve seat; 11. a valve port; 12. an accommodating chamber; 13. a middle channel;

20. a sleeve;

30. a flow dividing section; 31. an installation port; 32. a cavity; 321. a first chamber; 322. a second chamber;

33. an inlet channel; 331. a first bore section; 332. a second bore section; 34. a flow distribution channel;

40. a valve core assembly;

50. a spreader cone;

60. a first seal member;

70. a second seal.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 9, an embodiment of the present invention provides an electronic expansion valve, which includes a valve seat 10, a sleeve 20, a valve core assembly 40, and a flow dividing portion 30. Wherein the valve seat 10 has an assembly end and a valve port end, the valve port end being provided with a valve port 11. The sleeve 20 is coupled to the mounting end of the valve seat 10 and forms a mounting cavity. A valve cartridge assembly 40 is movably disposed within the mounting cavity, the valve cartridge assembly 40 being configured to regulate flow at the valve port 11. One end of the flow dividing part 30 is provided with a mounting port 31, the mounting port 31 is connected with the assembling end of the valve seat 10, a cavity 32 is arranged in the flow dividing part 30, the valve port end is positioned in the cavity 32, the flow dividing part 30 is provided with an inlet channel 33 and a plurality of flow dividing channels 34, and the inlet channel 33, the valve port 11 and the flow dividing channels 34 are sequentially communicated.

Use the technical scheme of the utility model, disk seat 10 and sleeve pipe 20 form the casing, through setting up disk seat 10 in the cavity 32 of reposition of redundant personnel portion 30 to make entrance channel 33 set up on reposition of redundant personnel portion 30, can reduce the interval between entrance channel 33 and the reposition of redundant personnel passageway 34, guarantee electronic expansion valve's normal operating. Specifically, the inlet passage 33 is disposed on the flow dividing portion 30, and during the operation of the electronic expansion valve, the fluid flows out through the inlet passage 33 and the valve port 11 in sequence and then flows out through the flow dividing passage 34. In the electronic expansion valve in the conventional technical scheme, in the working process, fluid flows into the shell from the inlet channel arranged on the sleeve, flows into the flow dividing part through the valve port, and finally flows out through the flow dividing channel. Compared with the traditional technical scheme, the design of the scheme reduces the distance between the inlet channel 33 and the flow dividing channel 34, so that the disturbance degree is reduced and the turbulence is reduced in the process of fluid flowing from the inlet channel 33 to the flow dividing channel 34, and the normal operation of the electronic expansion valve is ensured. And, in actual use, need set up the connecting pipe in entrance way 33 department, among the traditional technical scheme, the connecting pipe sets up on the sleeve pipe, and its position relative reposition of redundant personnel portion can change at will, and the unable position of accurate location connecting pipe influences the installation of later stage electronic expansion valve. In this scheme, the connecting pipe sets up on reposition of redundant personnel portion 30, and its rigidity relative to reposition of redundant personnel portion 30 has guaranteed the convenience to electronic expansion valve assembly.

As shown in fig. 1 to 3, the valve port end divides the cavity 32 into a first chamber 321 and a second chamber 322, the inlet passage 33 is disposed on a sidewall surface of the flow dividing portion 30 where the first chamber 321 is located, and the flow dividing passage 34 is disposed on a sidewall surface of the flow dividing portion 30 where the second chamber 322 is located. In this embodiment, the first chamber 321 and the second chamber 322 are distributed along the axial direction of the flow dividing portion 30, and the first chamber 321 is disposed close to the sleeve 20. The arrangement is such that fluid passing through the inlet channel 33 passes through the first chamber 321, the valve port 11 and the second chamber 322 in sequence and flows out through the diversion channel 34. With such an arrangement, the flow path of the fluid can be reduced as much as possible, and the smoothness of the fluid flow can be ensured.

Further, the valve seat 10 is provided with a middle passage 13; the inlet and outlet of the intermediate channel 13 are respectively communicated with the first chamber 321 and the valve port 11. Specifically, the valve seat 10 has a receiving cavity 12, the receiving cavity 12 is communicated with the valve port 11, the valve core assembly 40 is movably arranged in the receiving cavity 12, and the intermediate channel 13 is arranged on the side wall of the valve seat 10. In this embodiment, the plurality of intermediate passages 13 are provided at intervals along the circumferential direction of the valve seat 10, and the arrangement enables the fluid to flow from the first chamber 321 into the valve port 11 through the intermediate passages 13, thereby ensuring the smoothness of the fluid flow. The projection of the outlet of the inlet duct 33 on the outer peripheral surface of the valve seat 10 may be offset from the inlet of the intermediate duct 13, specifically, the projection of the outlet of the inlet duct 33 on the outer peripheral surface of the valve seat 10 may be offset from the inlet of the intermediate duct 13 in the axial direction of the valve seat 10 or may be offset in the circumferential direction of the valve seat 10, and the projection of the outlet of the inlet duct 33 on the outer peripheral surface of the valve seat 10 may not overlap with the inlet of the intermediate duct 13. In this embodiment, the inlet passage 33 extends in the radial direction of the flow dividing portion 30, the intermediate passage 13 extends in the radial direction of the valve seat 10, and the inlet passage 33 and the intermediate passage 13 can be distributed in a staggered manner. With the above arrangement, the situation that fluid directly flows from the first cavity 321 into the intermediate channel 13 and impacts the spool assembly 40 can be avoided, and the stability of the spool assembly 40 of the electronic expansion valve is ensured.

As shown in fig. 1 to 3, the inlet passage 33 includes a first bore section 331 and a second bore section 332 which are stepped in a radial direction of the flow dividing portion 30, the first bore section 331 communicates with the first chamber 321, and a diameter of the first bore section 331 is smaller than a diameter of the second bore section 332. So set up for the ladder face that first hole section 331 and second hole section 332 formed plays spacing effect to the inlet channel pipe, can guarantee to carry out the convenience assembled to the inlet channel pipe.

In this embodiment, the surface of the valve opening end close to the mounting end is located on one side of the axis of the first hole section 331 close to the flow dividing passage 34, and the distance between the axis of the first hole section 331 and the surface of the valve opening end close to the mounting end is greater than or equal to the radius of the first hole section 331 along the axis direction of the flow dividing portion 30. In the process that the fluid flows into the first chamber 321, the arrangement can prevent the fluid from impacting the circumferential surface of the valve opening end close to the assembling end, so that the smoothness of the fluid flow can be ensured. It will be appreciated that the surface of the valve mouth end adjacent the fitting end forms a floor of the first chamber 321, the floor of the first chamber 321 being perpendicular to the axis of the valve seat 10. And in the embodiment, the distance between the axis of the first hole section 331 and the surface of the valve opening end close to the assembling end is equal to the radius of the first hole section 331. With this arrangement, the length of the first chamber 321 in the axial direction can be reduced as much as possible, the size of the flow dividing portion 30 in the axial direction can be reduced as much as possible, and the distance from the inlet passage 33 to the flow dividing passage 34 can be ensured to be as small as possible.

Further, the bottom end of the second chamber 322 is provided with a diversion cone 50 facing the valve port 11, and the diversion channel 34 is located at the bottom end of the second chamber 322; the plurality of diverter channels 34 are evenly distributed along the circumference of the diverter cone 50. The end of the tap cone 50 is a conical structure, and the diameter of the tap cone 50 is gradually increased from the assembling end to the valve port end. In this embodiment, the shunting cone 50 and the shunting part 30 are integrally formed. The arrangement of the shunting cone 50 can play a shunting role on the fluid, and the uniformity of fluid distribution is ensured. And above-mentioned setting, can guarantee to shunt part 30 the convenience of processing.

As shown in fig. 9, the diversion channel 34 may also be configured to communicate with the sidewall of the second chamber 322, in which case the extension direction of the diversion channel 34 forms an angle with the axial direction of the second chamber 322, and the diversion channel 34 extends in a direction far away from the first chamber 321. So set up, can guarantee the interval between the one end of keeping away from first cavity 321 of two adjacent reposition of redundant personnel passageways 34, and then can guarantee the quantity of reposition of redundant personnel passageway 34 as far as possible to guarantee the reposition of redundant personnel effect to the fluid.

As shown in fig. 3 to 8, the first chamber 321 is annularly surrounded on the outer circumference of the valve seat 10, and the inner diameter of the first chamber 321 is the same as that of the second chamber 322. In this embodiment, the mounting opening 31 and the cavity 32 form a stepped hole along the axial direction of the flow dividing portion 30, and the diameter of the mounting opening 31 is larger than that of the cavity 32. The valve seat 10 includes a valve seat body, a first annular protrusion and a second annular protrusion, the first annular protrusion and the second annular protrusion are both annularly disposed on the periphery of the valve seat body and coaxially disposed with the valve seat body, the first annular protrusion forms an assembling end and is disposed in the mounting port 31, and the second annular protrusion forms a valve port end and is disposed in the cavity 32. The first annular bulge and the valve seat body can be of a split structure or an integrated structure, and the second annular bulge and the valve seat body can be of a split structure or an integrated structure. In this embodiment, the first annular protrusion and the valve seat body are of a split structure, and the second annular protrusion and the valve seat body are of an integrally formed structure. By the arrangement, the cavity 32 can be divided into the first cavity 321 and the second cavity 322 which are distributed along the axis, and the structure is simple and the assembly is convenient.

As shown in fig. 3, the electronic expansion valve includes a first sealing member 60, the first sealing member 60 is annularly disposed between the valve-opening end and the cavity 32, and the first sealing member 60 is used for sealing a gap between the valve-opening end and the cavity 32. The first sealing element 60 can seal the gap between the valve opening end and the cavity 32, so as to ensure the isolation and sealing effect of electrons on the first cavity 321 and the second cavity 322, and ensure the sealing performance of the electronic expansion valve.

Specifically, the circumferential surface of the valve port end is annularly provided with a first mounting groove, the first mounting groove is coaxially arranged with the valve port end, and the first sealing element 60 is arranged in the first mounting groove. Above-mentioned setting, its simple structure, and be convenient for assemble electronic expansion valve.

As shown in fig. 3, the electronic expansion valve includes a second sealing member 70, the second sealing member 70 is annularly disposed between the fitting end and the mounting opening 31, and the second sealing member 70 is used for sealing a gap between the fitting end and the mounting opening 31. With the above arrangement, the first sealing member 60 and the second sealing member 70 are distributed along the axial direction of the flow dividing portion 30 and are respectively located at two ends of the first chamber 321, so as to further ensure the sealing performance of the electronic expansion valve.

As shown in fig. 3 and fig. 6 to 8, the electronic expansion valve further has a second mounting groove annularly disposed at the bottom of the mounting opening 31, and the second mounting groove is disposed coaxially with the mounting opening 31, a second sealing member 70 is disposed in the second mounting groove, and the second sealing member 70 is in abutting fit with an end surface of the mounting end near the valve opening end. Above-mentioned setting, it conveniently processes reposition of redundant personnel portion 30, and can conveniently assemble electronic expansion valve.

As shown in fig. 3, the mounting opening 31 is provided with an internal thread, and the outer peripheral surface of the fitting end is provided with an external thread, and the fitting end and the mounting opening 31 are screwed with the external thread through the internal thread. By means of the arrangement, convenience in assembling the electronic expansion valve can be guaranteed.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, 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 therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms do not have special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. An electronic expansion valve, comprising:

a valve seat (10) having an assembly end and a valve port end, the valve port end being provided with a valve port (11);

a sleeve (20) connected to the fitting end of the valve seat (10) and forming a fitting cavity;

a valve core assembly (40) movably arranged in the assembly cavity, wherein the valve core assembly (40) is used for adjusting the flow at the valve port (11);

the valve seat (10) comprises a flow dividing part (30), wherein one end of the flow dividing part (30) is provided with a mounting opening (31), and the mounting opening (31) is connected with the assembling end of the valve seat (10); a cavity (32) is arranged in the flow dividing part (30), and the valve opening end is positioned in the cavity (32); the flow dividing part (30) is provided with an inlet channel (33) and a plurality of flow dividing channels (34), and the inlet channel (33), the valve port (11) and the flow dividing channels (34) are communicated in sequence.

2. An electronic expansion valve according to claim 1, wherein the valve port end divides the cavity (32) into a first chamber (321) and a second chamber (322), the inlet passage (33) being arranged in a wall surface of the flow dividing portion (30) in which the first chamber (321) is located, and the flow dividing passage (34) being arranged in a wall surface of the flow dividing portion (30) in which the second chamber (322) is located.

3. An electronic expansion valve according to claim 2, wherein the valve seat (10) is provided with an intermediate passage (13); the inlet and the outlet of the intermediate channel (13) are respectively communicated with the first chamber (321) and the valve port (11).

4. An electronic expansion valve according to claim 2, wherein the inlet passage (33) comprises a first bore section (331) and a second bore section (332) arranged in radial steps along the flow dividing portion (30), the first bore section (331) communicating with the first chamber (321), the first bore section (331) having a smaller diameter than the second bore section (332).

5. An electronic expansion valve according to claim 4, wherein the surface of the valve port end near the fitting end is located on the side of the axis of the first bore section (331) near the flow dividing channel (34), and the distance between the axis of the first bore section (331) and the surface of the valve port end near the fitting end in the direction of the axis of the flow dividing portion (30) is greater than or equal to the radius of the first bore section (331).

6. An electronic expansion valve according to claim 2, wherein the bottom end of the second chamber (322) is provided with a tap cone (50) directly opposite to the valve port (11), and the tap channel (34) is located at the bottom end of the second chamber (322); the plurality of the diversion channels (34) are uniformly distributed along the circumferential direction of the diversion cone (50).

7. An electronic expansion valve according to claim 6, wherein the end of the tap cone (50) is conical, the diameter of the tap cone (50) increasing from the fitting end to the valve port end.

8. An electronic expansion valve according to claim 2, wherein the first chamber (321) is annularly enclosed at the outer circumference of the valve seat (10), and wherein the inner diameter of the first chamber (321) is the same as the inner diameter of the second chamber (322).

9. The electronic expansion valve of claim 1, wherein the electronic expansion valve comprises:

a first seal (60) disposed annularly between the valve port end and the cavity (32), the first seal (60) for sealing a gap between the valve port end and the cavity (32);

a second seal member (70) annularly disposed between the fitting end and the mounting opening (31), the second seal member (70) being for sealing a gap between the fitting end and the mounting opening (31).

10. The electronic expansion valve of claim 9,

a first mounting groove is annularly formed in the peripheral surface of the valve port end, the first mounting groove and the valve port end are coaxially arranged, and the first sealing element (60) is arranged in the first mounting groove;

electronic expansion valve still has the second mounting groove, the annular setting of second mounting groove is in the bottom of installing port (31), just the second mounting groove with installing port (31) coaxial setting, second sealing member (70) set up in the second mounting groove, just second sealing member (70) with being close to of assembly end the terminal surface butt cooperation of valve port end.

11. An electronic expansion valve according to claim 1, wherein the mounting opening (31) is provided with an internal thread, and an outer circumferential surface of the fitting end is provided with an external thread, and the fitting end and the mounting opening (31) are threadedly connected to the external thread via the internal thread.

12. An electronic expansion valve according to claim 3, wherein the projection of the outlet of the inlet channel (33) onto the outer circumferential surface of the valve seat (10) is offset from the inlet of the intermediate channel (13).

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