CN217898881U - Electronic expansion valve - Google Patents

Abstract

The utility model provides an electronic expansion valve, it includes: the valve comprises a shell, a valve body and a valve seat, wherein the shell is provided with an assembly cavity and a valve port which are communicated with each other; the shunt part is provided with an installation cavity and a shunt cavity which are mutually communicated along the axis direction, one end of the shell, which is provided with the valve port, is arranged in the installation cavity, and the shunt part, in which the installation cavity is located, is provided with an inlet channel; the shunting part where the shunting cavity is located is provided with a plurality of shunting ports, each shunting port is positioned on the circumferential side wall of the shunting cavity, and the inlet channel, the mounting cavity, the valve port and the shunting port are communicated in sequence; and the valve core assembly is movably arranged in the assembly cavity and is used for adjusting the refrigerant flow at the valve opening. Through the technical scheme provided by the application, the problem that the electronic expansion valve in the prior art is poor in shunting effect 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

The existing electronic expansion valve with a flow dividing function generally includes a housing and a flow dividing portion, where the housing includes a housing and a valve core assembly, where one end of the housing is provided with a valve port, and the valve core assembly is movably disposed in the housing and used for plugging or opening the valve port. The reposition of redundant personnel portion has installation cavity and the reposition of redundant personnel chamber of mutual intercommunication, and the one end setting that the casing has the valve port is in installation cavity department, and valve port and reposition of redundant personnel chamber intercommunication, and the bottom of reposition of redundant personnel portion still is provided with a plurality of diffluence mouths, diffluence mouth and reposition of redundant personnel chamber intercommunication. When the electronic expansion valve is used, the valve core assembly opens the valve port, and fluid enters the shell, sequentially passes through the valve port and the shunting cavity and flows out of the shunting port. In the above-mentioned scheme, the reposition of redundant personnel mouth can shunt the fluid in the reposition of redundant personnel intracavity, but the reposition of redundant personnel mouth among the prior art, its reposition of redundant personnel effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electronic expansion valve to solve the poor problem of electronic expansion valve reposition of redundant personnel effect among the prior art.

The utility model provides an electronic expansion valve, it includes: the valve comprises a shell, a valve body and a valve seat, wherein the shell is provided with an assembly cavity and a valve port which are communicated with each other; the flow dividing part is provided with an installation cavity and a flow dividing cavity which are mutually communicated along the axial direction, one end of the shell, which is provided with the valve port, is arranged in the installation cavity, and the flow dividing part, in which the installation cavity is positioned, is provided with an inlet channel; the flow dividing part where the flow dividing cavity is located is provided with a plurality of flow dividing ports, each flow dividing port is located on the circumferential side wall of the flow dividing cavity, and the inlet channel, the mounting cavity, the valve port and the flow dividing ports are communicated in sequence; and the valve core assembly is movably arranged in the assembly cavity and is used for adjusting the refrigerant flow at the valve opening.

Further, reposition of redundant personnel portion includes along axis direction interconnect's cylinder section and round platform section, and the installation cavity sets up the tip at the cylinder section, and the round platform section has link and free end, and the external diameter of free end reduces gradually towards the direction of keeping away from the cylinder section, and the free end is provided with a plurality of reposition of redundant personnel holes along circumference annular, and the first end and the reposition of redundant personnel mouth intercommunication of reposition of redundant personnel hole, the second end of reposition of redundant personnel hole are located the lateral wall of free end.

Further, the diameter of the second end of the diversion hole is larger than the diameter of the middle part of the diversion hole.

Furthermore, the electronic expansion valve also comprises a shunting cone, the shunting cone is arranged at the bottom of the shunting cavity, the shunting cone and the valve port are coaxially arranged, and the outer diameter of the shunting cone is gradually reduced along the direction from the shunting cavity to the mounting cavity.

Further, the housing includes: the valve seat is arranged in the installation cavity and provided with a valve port end and an assembly end which are arranged at intervals along the axial direction, the valve port end is arranged close to the flow dividing port, the valve port is arranged at the valve port end, a fluid cavity is formed in a space between the valve seat and the inner peripheral surface of the installation cavity, the valve port end is positioned between the fluid cavity and the flow dividing cavity, and the inlet channel, the fluid cavity and the valve port are communicated in sequence; the sleeve is provided with an opening end and a blocking end which are oppositely arranged along the axis direction, the opening end is arranged at the assembling end, and the sleeve is matched with the valve seat to form an assembling cavity.

Furthermore, the valve seat is also provided with a circulation hole, the circulation hole is positioned between the assembling end and the valve port end, and the fluid cavity is communicated with the valve port through the circulation hole.

Further, the inlet channel is positioned on the side wall of the flow dividing part between the assembling end and the valve port end, and the distance between the axis of the inlet channel and the surface, close to the assembling end, of the valve port end is larger than or equal to the radius of the inlet channel along the axis direction of the flow dividing part.

Further, the electronic expansion valve further comprises: the first sealing element is arranged between the valve port end and the side wall of the mounting cavity and is used for sealing a gap between the valve port end and the side wall of the mounting cavity; and the second sealing element is arranged between the assembling end and the mounting cavity and is used for sealing a gap between the assembling end and the mounting cavity.

Furthermore, the installation cavity is communicated with the diversion cavity in a stepped mode, the diameter of the installation cavity is larger than that of the diversion cavity, a first installation groove is formed in the bottom of the installation cavity, the first installation groove extends along the circumferential direction of the installation cavity, and a first sealing element is arranged in the first installation groove; the installation cavity includes first hole section and the second hole section of following the axis direction ladder intercommunication, and first hole section is close to the diffluence pass setting, and the diameter of first hole section is less than the diameter of second hole section, and the bottom of second hole section is provided with the second mounting groove, and the second mounting groove extends along the circumference of second hole section, and the second sealing member setting is in the second mounting groove.

Further, the first mounting groove is provided with an inner side wall and an outer side wall which are oppositely arranged from inside to outside along the radial direction, and the diameter of the inner side wall is larger than that of the diversion cavity.

Use the technical scheme of the utility model, through with the diffluence opening setting on the lateral wall of reposition of redundant personnel chamber, can promote the reposition of redundant personnel effect to the fluid. Specifically, when the electronic expansion valve works, the valve port is opened by the valve core assembly, fluid flows into the shunting cavity after sequentially passing through the inlet channel, the installation cavity and the valve port, and after the fluid flows out of the valve port, the condition that the fluid is not uniformly distributed along the circumferential direction may exist due to the influence of the size precision, the assembly precision and the like of the valve port. In the traditional technical scheme, because the branch flow port is arranged at the bottom of the branch flow cavity, the fluid flowing into the branch flow cavity from the valve port can directly flow out from the plurality of branch flow ports basically, and the branch flow cavity can not redistribute the flow passing through the plurality of branch flow ports basically, so that the branch flow effect of the electronic expansion valve is poor. Therefore, compared with the traditional technical scheme, the arrangement of the scheme has better shunting effect.

Drawings

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

fig. 1 shows a schematic structural diagram 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 shows a schematic structural diagram of the flow dividing part provided by the present invention;

fig. 4 shows a front view of the flow dividing portion provided by the present invention;

fig. 5 shows a cross-sectional view of a flow divider provided by the present invention;

fig. 6 shows a schematic structural diagram of a valve seat provided by the present invention;

fig. 7 shows a schematic partial structure diagram of a valve seat provided by the present invention.

Wherein the figures include the following reference numerals:

10. a housing; 101. an assembly chamber; 102. a valve port;

11. a valve seat; 12. a sleeve;

20. a flow dividing section; 201. a mounting cavity; 2011. a first bore section; 2012. a second bore section; 202. a shunting cavity; 203. a shunt port; 204. a shunt hole;

21. a cylindrical section; 22. a circular table section;

31. an inlet channel; 32. a fluid chamber; 33. a flow-through hole;

40. a valve core assembly;

50. a spreader cone;

60. a first seal member; 61. a first mounting groove;

70. a second seal member; 71. and a second mounting groove.

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 5, an embodiment of the present invention provides an electronic expansion valve, which includes a housing 10, a flow dividing portion 20, and a valve core assembly 40. Wherein, the housing 10 has a fitting chamber 101 and a valve port 102 communicating with each other. The flow dividing part 20 is provided with a mounting cavity 201 and a flow dividing cavity 202 which are mutually communicated along the axial direction, one end of the shell 10, which is provided with the valve port 102, is arranged in the mounting cavity 201, and the flow dividing part 20, in which the mounting cavity 201 is located, is provided with an inlet channel 31; the flow dividing portion 20 where the flow dividing cavity 202 is located is provided with a plurality of flow dividing ports 203, each flow dividing port 203 is located on a circumferential side wall of the flow dividing cavity 202, and the inlet channel 31, the mounting cavity 201, the valve port 102 and the flow dividing ports 203 are communicated in sequence. The valve core assembly 40 is movably disposed in the mounting chamber 101, and the valve core assembly 40 is used for adjusting the flow rate of the refrigerant at the valve port 102.

Use the technical scheme of the utility model, through setting up the diffluence mouth 203 on the lateral wall of shunting chamber 202, can promote the reposition of redundant personnel effect to the fluid. Specifically, when the electronic expansion valve works, the valve core assembly 40 opens the valve port 102, fluid flows into the diversion cavity 202 after passing through the inlet channel 31, the installation cavity 201 and the valve port 102 in sequence, and after the fluid flows out from the valve port 102, due to the influence of the dimensional accuracy, the assembly accuracy and the like of the valve port 102, the situation that the fluid is not uniformly distributed along the circumferential direction may exist. Among the traditional technical scheme, because the reposition of redundant personnel mouth sets up in the bottom of reposition of redundant personnel chamber, can directly flow out from a plurality of reposition of redundant personnel mouths by the fluid that the valve port flowed into to the reposition of redundant personnel intracavity basically, reposition of redundant personnel chamber can not carry out the redistribution to the flow through a plurality of reposition of redundant personnel mouths, leads to electronic expansion valve's reposition of redundant personnel effect poor. Therefore, compared with the traditional technical scheme, the arrangement of the scheme has better shunting effect.

As shown in fig. 2 to 4, the shunting portion 20 includes a cylindrical section 21 and a circular truncated cone section 22 which are connected to each other along the axial direction, and the mounting cavity 201 is disposed at an end portion of the cylindrical section 21, the circular truncated cone section 22 has a connection end and a free end, an outer side wall of the free end is of a tapered structure, an outer diameter of the free end gradually decreases towards a direction away from the cylindrical section 21, the free end is annularly provided with a plurality of shunting holes 204 along the circumferential direction, a first end of the shunting hole 204 is communicated with the shunting port 203, and a second end of the shunting hole 204 is located on an outer side wall of the free end. Above-mentioned setting for contained angle has between the axis direction of reposition of redundant personnel hole 204 and the axis direction of reposition of redundant personnel portion 20, and, the second end of reposition of redundant personnel hole 204 is located the lateral wall of free end, can increase the circumference interval between the second end of two adjacent reposition of redundant personnel holes 204, and during the concrete use, make things convenient for external reposition of redundant personnel pipeline to be connected with the second end of reposition of redundant personnel hole 204. In addition, the above arrangement can reduce the circumferential dimension of the cylindrical section 21, and further reduce the circumferential dimension of the flow dividing portion 20, thereby ensuring the miniaturization of the electronic expansion valve.

Further, the diameter of the second end of the diversion hole 204 is larger than the diameter of the middle portion of the diversion hole 204. In this embodiment, the second end of reposition of redundant personnel hole 204 forms the ladder face with the middle part of reposition of redundant personnel hole 204, and when the external reposition of redundant personnel pipeline of assembly, this ladder face can play spacing effect to external reposition of redundant personnel pipeline, promotes the convenience to reposition of redundant personnel pipeline assembly.

As shown in fig. 2, the electronic expansion valve further includes a diverging cone 50, the diverging cone 50 is disposed at the bottom of the diverging cavity 202, the diverging cone 50 is disposed coaxially with the valve port 102, and the outer diameter of the diverging cone 50 gradually decreases along the direction from the diverging cavity 202 to the installation cavity 201. In this embodiment, a distance is provided between a tip of the diverging cone 50 and an end surface of the housing 10 having the valve port 102, when a fluid flows into the diverging chamber 202 from the valve port 102, the fluid impacts a circumferential surface of the diverging cone 50, and the diverging cone 50 further splits the fluid, thereby further improving a diverging effect of the electronic expansion valve.

Specifically, the housing 10 includes a valve seat 11 and a sleeve 12. The valve seat 11 is disposed in the installation cavity 201, the valve seat 11 has a valve port end and an assembling end which are disposed at intervals along an axial direction, the valve port end is disposed near the diversion port 203, the valve port 102 is disposed at the valve port end, a space between the valve seat 11 and an inner circumferential surface of the installation cavity 201 forms the fluid cavity 32, the valve port end is disposed between the fluid cavity 32 and the diversion cavity 202, and the inlet channel 31, the fluid cavity 32 and the valve port 102 are sequentially communicated. The sleeve 12 has an open end and a closed end which are oppositely arranged in the axial direction, the open end is arranged at the assembling end, and the sleeve 12 is matched with the valve seat 11 to form the assembling cavity 101. By arranging the inlet channel 31 on the side wall of the flow dividing part 20, the axial distance between the inlet channel 31 and the flow dividing port 203 can be reduced as much as possible, the disturbance degree and the turbulence are reduced in the process that fluid flows from the inlet channel 31 to the flow dividing port 203, and the normal operation of the electronic expansion valve is ensured.

As shown in fig. 2, 6 and 7, the valve seat 11 includes a valve seat body, a first annular protrusion and a second annular protrusion, both of which are annularly disposed on the periphery of the valve seat body and are coaxially disposed with the valve seat body, the first annular protrusion forms an assembling end, and the second annular protrusion forms a valve port end. The first annular bulge and the valve seat body can be arranged into a split structure or an integrally formed structure, and the second annular bulge and the valve seat body can be arranged into a split structure or an integrally formed 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. Also, a fluid chamber 32 is annularly disposed about the periphery of the valve seat body between the valve port end and the mounting end. Above-mentioned setting, its simple structure, and can guarantee the convenience to electronic expansion valve assembly.

Further, the valve seat 11 is further provided with a flow hole 33, the flow hole 33 is provided on a sidewall of the valve seat 11, the flow hole 33 is located between the mounting end and the valve port end, and the fluid chamber 32 is communicated with the valve port 102 through the flow hole 33. In this embodiment, the plurality of flow holes 33 are provided at intervals in the circumferential direction of the valve seat 11, and in this embodiment, four flow holes 33 are provided. With such an arrangement, the uniformity of the fluid in the fluid chamber 32 flowing into the valve port 102 can be ensured, and further the uniformity of the fluid flowing from the valve port 102 into the shunting chamber 202 can be ensured, thereby further ensuring the shunting effect of the electronic expansion valve.

Specifically, the inlet channel 31 is located on the side wall of the flow dividing portion 20 between the fitting end and the valve port end, the surface of the valve port end close to the fitting end is located on the side of the axis of the inlet channel 31 close to the flow dividing port 203, and the distance between the axis of the inlet channel 31 and the surface of the valve port end close to the fitting end is greater than or equal to the radius of the inlet channel 31 in the axial direction of the flow dividing portion 20. In the process that the fluid flows into the fluid cavity 32, the arrangement can avoid the fluid from impacting the peripheral surface of the valve opening end close to the assembling end, and further can ensure the smoothness of the fluid flow. It will be appreciated that the surface of the valve port end adjacent the mounting end forms a bottom surface of the fluid chamber 32, the bottom surface of the fluid chamber 32 being perpendicular to the axis of the valve seat 11. In the present embodiment, the distance between the axis of the inlet passage 31 and the surface of the valve-port end near the fitting end is equal to the radius of the inlet passage 31. With this arrangement, the length of the fluid chamber 32 in the axial direction can be reduced as much as possible, the dimension of the flow dividing portion 20 in the axial direction can be reduced as much as possible, and the distance from the inlet passage 31 to the flow dividing port 203 can be ensured to be as small as possible.

As shown in fig. 2 and 5, the electronic expansion valve further includes a first sealing member 60, the first sealing member 60 is disposed between the valve-opening end and the side wall of the mounting cavity 201, and the first sealing member 60 is used for sealing a gap between the valve-opening end and the side wall of the mounting cavity 201. By the arrangement, the sealing effect of the electronic expansion valve can be ensured.

Specifically, installation cavity 201 and reposition of redundant personnel chamber 202 ladder intercommunication, and the diameter of installation cavity 201 is greater than the diameter of reposition of redundant personnel chamber 202, and the bottom of installation cavity 201 is provided with first mounting groove 61, and first mounting groove 61 extends along the circumference of installation cavity 201, and first sealing member 60 sets up in first mounting groove 61. Above-mentioned setting can avoid along the circular setting on global of valve port end of circumference first mounting groove 61, and then can reduce the axial thickness of valve port end, reduces the axial dimension of reposition of redundant personnel portion 20, guarantees electronic expansion valve's miniaturization.

Further, the first mounting groove 61 has an inner sidewall and an outer sidewall oppositely disposed from inside to outside in the radial direction, and the diameter of the inner sidewall is larger than that of the diverging chamber 202. By the arrangement, an annular convex structure is formed between the first mounting groove 61 and the flow dividing cavity 202, the position of the first sealing element 60 can be limited by the annular convex structure, the situation that the first sealing element 60 deforms or moves in the working process of the electronic expansion valve is avoided, and the sealing effect of the first sealing element 60 is ensured.

Further, the electronic expansion valve further includes a second sealing member 70, the second sealing member 70 is disposed between the mounting end and the mounting cavity 201, and the second sealing member 70 is used for sealing a gap between the mounting end and the mounting cavity 201. The second sealing member 70 is provided to further improve the sealing effect of the electronic expansion valve.

In this embodiment, installation cavity 201 includes first hole section 2011 and second hole section 2012 along axis direction ladder intercommunication, and first hole section 2011 is close to diversion port 203 and sets up, and the diameter of first hole section 2011 is less than the diameter of second hole section 2012, and the bottom of second hole section 2012 is provided with second mounting groove 71, and second mounting groove 71 extends along the circumference of second hole section 2012, and second sealing member 70 sets up in second mounting groove 71, forms annular protruding structure between second mounting groove 71 and the second hole section 2012. And, the diameter of first bore section 2011 equals the diameter of the lateral wall of first mounting groove 61, and above-mentioned setting, its simple structure just can promote the convenience of assembling electronic expansion valve.

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 exemplary 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 those 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 … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown 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 term "above … …" may include both orientations of "above … …" and "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 if not stated otherwise, the terms have no special meaning, 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 (10)

1. An electronic expansion valve, comprising:

a housing (10) having a fitting chamber (101) and a valve port (102) communicating with each other;

the flow dividing part (20) is provided with a mounting cavity (201) and a flow dividing cavity (202) which are communicated with each other along the axial direction, one end, provided with the valve port (102), of the shell (10) is arranged in the mounting cavity (201), and the flow dividing part (20) where the mounting cavity (201) is located is provided with an inlet channel (31); the flow dividing part (20) where the flow dividing cavity (202) is located is provided with a plurality of flow dividing ports (203), each flow dividing port (203) is located on the circumferential side wall of the flow dividing cavity (202), and the inlet channel (31), the installation cavity (201), the valve port (102) and the flow dividing ports (203) are communicated in sequence;

a valve core assembly (40) movably disposed in the mounting cavity (101), the valve core assembly (40) being used for adjusting the refrigerant flow at the valve port (102).

2. An electronic expansion valve according to claim 1, wherein the flow dividing portion (20) comprises a cylindrical section (21) and a truncated cone section (22) which are connected to each other in the axial direction, and the mounting cavity (201) is provided at an end portion of the cylindrical section (21), the truncated cone section (22) has a connection end and a free end, the outer diameter of the free end gradually decreases in a direction away from the cylindrical section (21), the free end is annularly provided with a plurality of flow dividing holes (204) in the circumferential direction, a first end of the flow dividing hole (204) communicates with the flow dividing port (203), and a second end of the flow dividing hole (204) is located on an outer side wall of the free end.

3. An electronic expansion valve according to claim 2, wherein the diameter of the second end of the bleed hole (204) is larger than the diameter of the middle of the bleed hole (204).

4. An electronic expansion valve according to claim 1, further comprising a diverging cone (50), wherein the diverging cone (50) is arranged at the bottom of the diverging chamber (202), the diverging cone (50) is arranged coaxially with the valve port (102), and the outer diameter of the diverging cone (50) is gradually reduced in the direction from the diverging chamber (202) to the mounting chamber (201).

5. An electronic expansion valve according to claim 1, wherein the housing (10) comprises:

the valve seat (11) is arranged in the installation cavity (201), the valve seat (11) is provided with a valve port end and an assembling end which are arranged at intervals along the axial direction, the valve port end is arranged close to the flow dividing port (203), the valve port (102) is arranged at the valve port end, a fluid cavity (32) is formed in a space between the valve seat (11) and the inner circumferential surface of the installation cavity (201), the valve port end is arranged between the fluid cavity (32) and the flow dividing cavity (202), and the inlet channel (31), the fluid cavity (32) and the valve port (102) are sequentially communicated;

the sleeve (12) is provided with an opening end and a blocking end which are oppositely arranged along the axial direction, the opening end is arranged at the assembling end, and the sleeve (12) is matched with the valve seat (11) to form the assembling cavity (101).

6. An electronic expansion valve according to claim 5, wherein the valve seat (11) is further provided with a flow opening (33), the flow opening (33) being located between the fitting end and the valve port end, the fluid chamber (32) being in communication with the valve port (102) via the flow opening (33).

7. An electronic expansion valve according to claim 5, wherein the inlet passage (31) is located in a side wall of the flow dividing portion (20) between the fitting end and the valve port end; the distance between the axis of the inlet channel (31) and the surface of the valve port end close to the fitting end is greater than or equal to the radius of the inlet channel (31) in the axial direction of the flow dividing part (20).

8. The electronic expansion valve of claim 5, further comprising:

a first seal (60) disposed between the valve port end and a sidewall of the mounting cavity (201), the first seal (60) being configured to seal a gap between the valve port end and the sidewall of the mounting cavity (201);

a second seal (70) disposed between the fitting end and the mounting cavity (201), the second seal (70) being for sealing a gap between the fitting end and the mounting cavity (201).

9. The electronic expansion valve of claim 8,

the mounting cavity (201) is communicated with the flow dividing cavity (202) in a stepped mode, the diameter of the mounting cavity (201) is larger than that of the flow dividing cavity (202), a first mounting groove (61) is formed in the bottom of the mounting cavity (201), the first mounting groove (61) extends along the circumferential direction of the mounting cavity (201), and a first sealing element (60) is arranged in the first mounting groove (61);

installation cavity (201) include along first hole section (2011) and second hole section (2012) of axis direction ladder intercommunication, first hole section (2011) is close to reposition of redundant personnel mouth (203) sets up, just the diameter of first hole section (2011) is less than the diameter of second hole section (2012), the bottom of second hole section (2012) is provided with second mounting groove (71), second mounting groove (71) are followed the circumference of second hole section (2012) extends, second sealing member (70) set up in second mounting groove (71).

10. An electronic expansion valve according to claim 9, wherein the first mounting groove (61) has an inner side wall and an outer side wall oppositely arranged from inside to outside in a radial direction, the inner side wall having a diameter larger than the diameter of the distribution chamber (202).

Images