CN216812905U - Electronic expansion valve, refrigerating system and automobile - Google Patents

Abstract

The utility model discloses an electronic expansion valve, a refrigeration system and an automobile, wherein the electronic expansion valve comprises a valve seat and a valve body assembly, the valve seat is provided with a valve core seat, and the valve core seat is provided with a valve core cavity and a valve port communicated with the valve core cavity; the valve body assembly comprises a connecting seat, a bearing and a valve core assembly, the connecting seat is connected with the valve seat, the connecting seat is provided with a mounting groove, and the bearing is mounted in the mounting groove; the valve core assembly penetrates through the connecting seat and the bearing and is inserted into the valve core cavity so as to open and close the valve port; wherein, the bearing and the connecting seat are in interference fit. The technical scheme of the utility model reduces the number of parts of the electronic expansion valve.

Description

Electronic expansion valve, refrigerating system and automobile

Technical Field

The utility model relates to the technical field of electronic expansion valves, in particular to an electronic expansion valve, a refrigeration system and an automobile.

Background

In the related art, the bearing of the electronic expansion valve needs to be fixed by other fixing members so as not to be displaced. This results in a large number of parts of the electronic expansion valve, which increases the production cost and is not conducive to the miniaturization of the electronic expansion valve.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an electronic expansion valve, aiming at reducing the number of parts of the electronic expansion valve.

In order to achieve the purpose, the electronic expansion valve provided by the utility model comprises a valve seat and a valve body assembly, wherein the valve seat is provided with a valve core seat, and the valve core seat is provided with a valve core cavity and a valve port communicated with the valve core cavity; the valve body assembly comprises a connecting seat, a bearing and a valve core assembly, the connecting seat is connected with the valve seat, the connecting seat is provided with an installation groove, and the bearing is installed in the installation groove; the valve core assembly penetrates through the connecting seat and the bearing to be inserted in the valve core cavity so as to open and close the valve port; wherein, the bearing and the connecting seat are in interference fit.

In one embodiment, the bearing comprises an inner ring, an outer ring and balls located between the inner ring and the outer ring, the valve core assembly is arranged in the inner ring in a penetrating mode, and the outer ring is in interference fit with the connecting seat.

In an embodiment, an interference between the outer ring and the connecting seat is greater than 0.03 mm.

In one embodiment, the connecting seat is provided with a guide hole communicated with the mounting groove, the valve core assembly comprises a valve rod and a valve core, the valve rod is arranged through the bearing, and one end of the valve rod is connected with the valve core; the valve core is inserted in the guide hole and the valve core cavity.

In one embodiment, the valve rod comprises a fixed section and an extension section connected with the fixed section, the extension section is in threaded connection with the valve core, and the fixed section is connected with the bearing.

In one embodiment, the fixing section is arranged through the inner ring and is in interference fit with the inner ring.

In one embodiment, the valve body assembly further comprises a valve sleeve and a limiting piece, the valve sleeve covers the periphery of the valve rod and is connected with the connecting seat; the locating part install in the valve sleeve, the locating part is equipped with spacing hole, the valve rod still include with spacing section that the canned paragraph is connected, the periphery wall of spacing section with spacing cooperation in hole.

In one embodiment, the limiting hole is in clearance fit with the limiting section.

In an embodiment, the valve body assembly further includes a rotor assembly located in the valve sleeve, the rotor assembly includes a magnetic ring and a connecting plate located in the magnetic ring, and the limiting section passes through the connecting plate to be matched with the limiting hole and is fixedly connected with the connecting plate.

The utility model also provides a refrigeration system, which comprises an electronic expansion valve, wherein the electronic expansion valve comprises a valve seat and a valve body assembly, the valve seat is provided with a valve core seat, and the valve core seat is provided with a valve core cavity and a valve port communicated with the valve core cavity; the valve body assembly comprises a connecting seat, a bearing and a valve core assembly, the connecting seat is connected with the valve seat, the connecting seat is provided with an installation groove, and the bearing is installed in the installation groove; the valve core assembly penetrates through the connecting seat and the bearing to be inserted in the valve core cavity so as to open and close the valve port; wherein, the bearing and the connecting seat are in interference fit.

The utility model also provides an automobile which comprises a refrigeration system, wherein the refrigeration system comprises an electronic expansion valve, the electronic expansion valve comprises a valve seat and a valve body assembly, the valve seat is provided with a valve core seat, and the valve core seat is provided with a valve core cavity and a valve port communicated with the valve core cavity; the valve body assembly comprises a connecting seat, a bearing and a valve core assembly, the connecting seat is connected with the valve seat, the connecting seat is provided with an installation groove, and the bearing is installed in the installation groove; the valve core assembly penetrates through the connecting seat and the bearing to be inserted in the valve core cavity so as to open and close the valve port; wherein, the bearing and the connecting seat are in interference fit.

The bearing of the technical scheme of the utility model is arranged in the mounting groove of the connecting seat, the valve core assembly is arranged in the bearing in a penetrating way and inserted in the valve core cavity, so that the valve core assembly can reciprocate in the connecting seat, the valve port of the valve core seat is opened and closed, and the flow of a refrigerant is further regulated. The bearing is arranged on the connecting seat through the interference fit of the bearing and the connecting seat, so that the fixation of a fixing piece is omitted, the number of parts of the electronic expansion valve is reduced, and on one hand, the electronic expansion valve is compact in structure, smaller in integral volume and beneficial to miniaturization arrangement; on the other hand, the production cost of the electronic expansion valve is reduced, and the industrial production and the popularization and the use of the product are facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an electronic expansion valve according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of an embodiment of a valve seat of the present invention;

FIG. 3 is a schematic structural view of one embodiment of a valve body assembly of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic structural view of an embodiment of the valve cartridge and stop of the present invention;

FIG. 6 is another perspective view of the valve cartridge and stop of FIG. 5;

FIG. 7 is a schematic view of another embodiment of the valve cartridge and stop of the present invention;

FIG. 8 is a schematic structural diagram of a connecting socket according to an embodiment of the present invention;

fig. 9 is another view of the connecting socket of fig. 8.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides an electronic expansion valve.

In an embodiment of the present invention, referring to fig. 1, the electronic expansion valve includes a valve seat 100 and a valve body assembly, the valve seat 100 is provided with a valve core seat 200, and the valve core seat 200 has a valve core cavity 200a and a valve port 200b communicated with the valve core cavity 200 a. Referring to fig. 1, 8 to 9, the valve body assembly includes a connecting seat 300, a bearing 400 and a valve core assembly 500, the connecting seat 300 is connected with the valve seat 100, the connecting seat 300 is provided with a mounting groove 300a, and the bearing 400 is mounted in the mounting groove 300 a; the valve core assembly 500 is inserted into the valve core cavity 200a through the connecting seat 300 and the bearing 400 to open and close the valve port 200 b; wherein, the bearing 400 is in interference fit with the connection seat 300.

Specifically, referring to fig. 1-2, the valve seat 100 serves as a mounting carrier for mounting the valve cartridge 200 and the valve body assembly to mount the valve cartridge 200 and the valve body assembly to a refrigeration system. Referring to fig. 2, the valve seat 100 has a valve cavity 100a, and a first passage 100b and a second passage communicating with the valve cavity 100a, and the valve core seat 200 is located in the valve cavity 100a, such that the refrigerant can enter from one of the first passage 100b and the second passage, pass through the valve core cavity 200a of the valve core seat 200, and flow out from the other of the first passage 100b and the second passage.

Referring to fig. 1, the valve core seat 200 is provided with a valve core chamber 200a and a valve port 200b communicated with the valve core chamber 200a, and refrigerant can enter the valve core chamber 200a through the valve port 200 b. Referring to fig. 1 to 3, the valve core seat 200 further has a flow port 200c communicating with the valve core chamber 200a, and the flow port 200c may be disposed on a side wall of the valve core seat 200, so that when the refrigerant enters the valve core chamber 200a from the valve port 200b, the refrigerant can flow out of the valve core seat 200 through the flow port 200 c. It is understood that the number of the flow ports 200c may be one or more.

Referring to fig. 1, 8 and 9, one end of the valve core seat 200 may be connected to the connecting seat 300, and a mounting groove 300a for accommodating the bearing 400 is formed in the connecting seat 300. Referring to fig. 3 and 9, specifically, the installation groove 300a may be disposed at an end of the connection seat 300 opposite to the valve core seat 200, a guide hole 300b is disposed at a bottom of the installation groove 300a, and the valve core assembly 500 is inserted into the bearing 400 and extends into the valve core cavity 200a through the guide hole 300b to reciprocate in the guide hole 300b, so that the valve port 200b has a variable cross section, thereby implementing throttling control. Specifically, when the valve core assembly 500 closes the valve port 200b, the electronic expansion valve has a closed valve position, and the refrigerant cannot flow into the valve core chamber 200a or flow out of the valve core chamber 200 a; when the valve core assembly 500 opens the valve port 200b, the electronic expansion valve has an open valve position, and the condensation can flow.

Referring to fig. 1 and 3, the valve core assembly 500 is inserted into the bearing 400, so that the valve core assembly 500 operates more smoothly, and the reliability of the movement of the valve core assembly 500 is improved. In order to realize the connection between the bearing 400 and the connection seat 300, please continue to refer to fig. 1 and fig. 3, the bearing 400 is in interference fit with the connection seat 300, so that the bearing 400 is tightly fitted with the connection seat 300, thereby ensuring the installation of the bearing 400.

The bearing 400 of the technical scheme of the utility model is arranged in the mounting groove 300a of the connecting seat 300, the valve core assembly 500 is arranged in the bearing 400 in a penetrating way and is inserted in the valve core cavity 200a, so that the valve core assembly 500 can reciprocate in the connecting seat 300, the valve port 200b of the valve core seat 200 is opened and closed, and the flow of the refrigerant is further regulated. Through the interference fit between the bearing 400 and the connecting seat 300, the bearing 400 is arranged on the connecting seat 300, the fixation of a fixing piece is omitted, the number of parts of the electronic expansion valve is reduced, on one hand, the structure of the electronic expansion valve is compact, the integral volume is smaller, and the miniaturization arrangement is facilitated; on the other hand, the production cost of the electronic expansion valve is reduced, and the industrial production and the popularization and the use of the product are facilitated.

Referring to fig. 3 to 4, in an embodiment, the bearing 400 includes an inner ring 410, an outer ring 420, and balls 430 located between the inner ring 410 and the outer ring 420, the valve core assembly 500 is disposed through the inner ring 410, and the outer ring 420 is in interference fit with the connecting seat 300.

Referring to fig. 3 to 4, the bearing 400 includes an outer ring 420, balls 430 and an inner ring 410 in a radial sequence, the outer ring 420 and the inner ring 410 are coaxially disposed, and the balls 430 are disposed between the outer ring 420 and the inner ring 410, so that the inner ring 410 can rotate relative to the outer ring 420. The valve core assembly 500 is inserted into the inner ring 410 of the bearing 400, and the outer ring 420 of the bearing 400 is in interference fit with the connecting seat 300, so that the valve core assembly 500 is movable relative to the connecting seat 300. This bearing 400 adopts the mode of impressing to assemble, and bearing 400's outer lane 420 and connecting seat 300 interference fit to it is inseparable with the connecting piece cooperation, has guaranteed the stability of bearing 400 installation.

Further, referring to fig. 4, in an embodiment, an interference between the outer ring 420 and the connecting seat 300 is greater than 0.03 mm. Referring to fig. 3 to 4 and 9, the bearing 400 may contact with the bottom of the mounting groove 300a, and the outer ring 420 is in interference fit with the wall of the mounting groove 300a, so that the bearing 400 is not fixed by a fixing member in the axial direction, the size of the connecting seat 300 in the axial direction is reduced, the structure of the electronic expansion valve is further compact, the volume is smaller, and the electronic expansion valve is more suitable for miniaturization.

Referring to fig. 1 and 3, in an embodiment, the valve core assembly 500 includes a valve rod 510 and a valve core 520, the valve rod 510 is disposed through the bearing 400, and one end of the valve rod is connected to the valve core 520; the spool 520 is inserted into the guide hole 300b and the spool chamber 200 a.

Referring to fig. 1, the valve rod 510 is disposed through the bearing 400 and rotatably connected to the bearing 400. One end of the valve stem 510 is connected to the spool 520, and the spool 520 is inserted into the guide hole 300b and the spool chamber 200 a. The valve shaft 510 and the valve core seat 200 may be coaxially disposed, and the valve core 520 is driven to reciprocate by the movement of the valve shaft 510, so that the valve core 520 opens and closes the valve port 200b, and is switched between an open valve position and a closed valve position.

The structure of the valve stem 510 is also various, referring to fig. 3, in an embodiment, the valve stem 510 includes a fixed section 511 and an extension section 512 connected to the fixed section 511, the extension section 512 is screwed with the valve core 520, and the fixed section 511 is connected to the bearing 400.

Referring to fig. 3, one end of the fixing section 511 is connected to the extension section 512, and the extension section 512 is disposed in the valve core 520. The extension 512 may have external threads, and the valve core 520 may have internal threads, and is threadedly coupled to the valve core 520 through the valve rod 510 to transmit driving force between the valve rod 510 and the valve core 520. Through the rotation of the valve rod 510 and the radial limitation of the valve core 520, the valve core 520 moves along the length direction of the valve rod 510 due to the threaded connection of the valve rod 510 and the valve core 520, and the rotation motion is converted into linear motion, so that the movement of the valve core 520 is realized.

Referring to fig. 3 to 4, the fixing section 511 is disposed through the inner ring 410 of the bearing 400 and connected to the inner ring 410 of the bearing 400, such that the valve rod 510 can rotate relative to the connecting seat 300, and the valve core 520 can move relative to the connecting seat 300 and the valve core seat 200, thereby opening and closing the valve port 200 b.

With continued reference to fig. 3 to 4, a stop 530 is disposed at an end of the valve core 520 facing the bearing 400, and the stop 530 is configured to abut against the outer ring 420 of the bearing 400 to limit the valve core 520 to open the valve port 200b at the maximum open valve position. When the valve core 520 moves away from the valve core seat 200 to the limit position, the stop member 530 abuts against the outer ring 420 of the bearing 400, and the movement of the valve core 520 is stopped, so that the valve port 200b of the valve core seat 200 is opened, and is in the maximum valve position, the variable cross-sectional flow area of the valve port 200b is increased, and the throttle pressure drop is reduced. Conversely, when the spool 520 moves in a direction closer to the port 200b, the smaller the variable cross-sectional flow area of the port 200b, the greater the throttling pressure drop. The stopper 530 may be provided integrally with the valve body 520 or may be provided separately.

In order to limit the movement of the valve element 520 in the radial direction, referring to fig. 8 to 9, the wall surface of the guide hole 300b is recessed inward to form a stopping groove 300c, and the stopping groove 300c is disposed along the extending direction of the guide hole 300b, and referring to fig. 5 to 7, the stopper 530 is provided with a guide protrusion 531 protruding from the outer wall surface of the valve element 520 and extending into the stopping groove 300 c. Referring to fig. 3, when the valve stem 510 rotates, the valve element 520 cannot rotate with the valve stem 510 due to the restriction of the stop groove 300c, so that the valve element 520 moves linearly.

The fixing section 511 and the bearing 400 are connected in various manners, referring to fig. 3 to 4, in an embodiment, the fixing section 511 is disposed through the inner ring 410 and is in interference fit with the inner ring 410. The fixing section 511 is in interference fit with the inner ring 410 to fix the fixing section 511 in the inner ring 410, so that the rotation reliability of the valve rod 510 is improved.

Considering that the valve stem 510 rotates on its own axis, if radial oscillation occurs, the coaxiality between the valve element 520 and the valve port 200b is affected. In view of the above, referring to fig. 1 and 3, in an embodiment, the valve body assembly further includes a valve sleeve 600 and a limiting member 700, wherein the valve sleeve 600 covers the outer circumference of the valve rod 510 and is connected to the connecting seat 300; the limiting member 700 is installed in the valve sleeve 600, the limiting member 700 is provided with a limiting hole 700a, the valve rod 510 further comprises a limiting section 513 connected with the fixing section 511, and the peripheral wall of the limiting section 513 is in limiting fit with the limiting hole 700 a.

Referring to fig. 3, the limit hole 700a is in limit fit with the outer peripheral wall of the fixing section 511 of the valve rod 510 to limit the freedom of movement of the fixing section 511 in the radial direction of the valve body assembly, and the bearing 400 is fixedly connected to the valve rod 510 to limit the freedom of movement of the valve rod 510 in the radial direction. The movement freedom of the valve rod 510 in the radial direction is limited by the limiting member 700 and the bearing 400, so that the valve rod 510 is prevented from swinging in the radial direction, the coaxiality between the valve core 520 and the valve port 200b is ensured, and the reliability of the electronic expansion valve switching valve is ensured. Meanwhile, the valve core 520 is reduced from wearing the valve port 200b in the movement process, and the accuracy of the electronic expansion valve throttling control is improved.

Referring to fig. 3, in an embodiment, the limiting hole 700a is in clearance fit with the limiting section. The gap between the hole wall of the stopper hole 700a and the outer peripheral wall of the fixing section 511 of the stem 510 may be 0.01 mm to 0.05 mm. If the clearance between the hole wall of the limiting hole 700a and the outer peripheral wall of the fixing section 511 of the valve rod 510 is smaller than 0.01 mm, the hole wall of the limiting hole 700a easily interferes with the rotation of the valve rod 510, so that the valve rod 510 is unsmooth in rotation. If the clearance between the hole wall of the limiting hole 700a and the outer peripheral wall of the fixing section 511 of the valve rod 510 is greater than 0.05 mm, the limiting effect of the limiting hole 700a on the moving freedom of the fixing section 511 in the radial direction of the valve body assembly is reduced, and the valve rod 510 cannot be effectively prevented from swinging.

Referring to fig. 1 and 3, in an embodiment, the valve body assembly further includes a rotor assembly 800 located in the valve housing 600, the rotor assembly 800 includes a magnetic ring 810 and a connecting plate 820 located in the magnetic ring 810, and the limiting section 513 passes through the connecting plate 820 to be matched with the limiting hole 700a, and is fixedly connected to the connecting plate 820.

Referring to fig. 3, the magnetic ring 810 extends along the axial direction of the valve rod 510, the magnetic ring 810 and the valve rod 510 are coaxially arranged, an annular groove may be axially formed on an inner peripheral wall of the magnetic ring 810, an outer peripheral wall of the connecting plate 820 is arranged in the annular groove, the connecting plate 820 and the magnetic ring 810 are integrally connected by injection molding, and the connecting plate 820 and the valve rod 510 may be in interference connection, so that a connection form between the valve rod 510 and the magnetic ring 810 is simplified, the weight of the rotor assembly 800 is reduced, the cost is reduced, and the precision of the electronic expansion valve is ensured.

Referring to fig. 1 and 3, when a magnetic field is applied from the outside to drive the rotor assembly 800 to rotate, the valve shaft 510 fixedly connected to the rotor assembly 800 is driven, so that the valve element 520 screwed with the valve shaft 510 moves along the axial direction of the valve shaft 510, thereby opening the valve port 200b and closing the valve port 200 b.

The present invention further provides a refrigeration system, which includes an electronic expansion valve, and the specific structure of the electronic expansion valve refers to the above embodiments, and since the refrigeration system adopts all the technical solutions of all the above embodiments, the refrigeration system at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein. Wherein, this electronic expansion valve includes valve seat 100 and valve body subassembly, and the valve body subassembly includes connecting seat 300, bearing 400 and case subassembly 500, and case subassembly 500 wears to locate connecting seat 300 and bearing 400, inserts simultaneously and locates in the case chamber 200a, through bearing 400 and connecting seat 300 interference fit, installs bearing 400 in connecting seat 300.

In one embodiment, the refrigeration system may be a refrigeration system of an air conditioner, a freezer, a refrigerator, a heat pump water heater, or other refrigeration or heating equipment, etc. The electronic expansion valve can control the flow of a refrigerating medium, such as a refrigerant, in the refrigerating system. Specifically, the air conditioner may be a household air conditioner or a vehicle-mounted air conditioner.

The utility model further provides an automobile which comprises the refrigeration system, the refrigeration system comprises an electronic expansion valve, and the specific structure of the electronic expansion valve is as described in the embodiments above, which is not repeated herein. In particular, the vehicle may be a car, a passenger car or a truck for carrying persons and/or goods. Wherein the truck may be a refrigerated transport vehicle for carrying goods to be preserved frozen.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (11)

1. An electronic expansion valve, comprising:

the valve seat is provided with a valve core seat, and the valve core seat is provided with a valve core cavity and a valve port communicated with the valve core cavity; and

the valve body assembly comprises a connecting seat, a bearing and a valve core assembly, the connecting seat is connected with the valve seat, the connecting seat is provided with an installation groove, and the bearing is installed in the installation groove; the valve core assembly penetrates through the connecting seat and the bearing to be inserted in the valve core cavity so as to open and close the valve port;

wherein, the bearing and the connecting seat are in interference fit.

2. The electronic expansion valve according to claim 1, wherein the bearing comprises an inner ring, an outer ring, and balls disposed between the inner ring and the outer ring, the valve core assembly is disposed through the inner ring, and the outer ring is in interference fit with the connecting seat.

3. The electronic expansion valve of claim 2, wherein an interference between the outer ring and the connecting seat is greater than 0.03 mm.

4. The electronic expansion valve according to claim 3, wherein the connecting seat is provided with a guide hole communicated with the mounting groove, the valve core assembly comprises a valve rod and a valve core, the valve rod is arranged through the bearing, and one end of the valve rod is connected with the valve core; the valve core is inserted in the guide hole and the valve core cavity.

5. The electronic expansion valve of claim 4, wherein the valve stem comprises a fixed section and an extension section connected with the fixed section, the extension section is in threaded connection with the valve core, and the fixed section is connected with the bearing.

6. The electronic expansion valve of claim 5, wherein the fixed segment is disposed through the inner ring and is in interference fit with the inner ring.

7. The electronic expansion valve according to claim 6, wherein the valve body assembly further comprises a valve sleeve and a stopper, the valve sleeve covers the outer circumference of the valve rod and is connected to the connecting seat; the locating part install in the valve sleeve, the locating part is equipped with spacing hole, the valve rod still include with spacing section that the canned paragraph is connected, the periphery wall of spacing section with spacing cooperation in hole.

8. The electronic expansion valve of claim 7, wherein the retaining hole is clearance fit with the retaining segment.

9. The electronic expansion valve of claim 7, wherein the valve assembly further comprises a rotor assembly disposed in the valve housing, the rotor assembly comprises a magnetic ring and a connecting plate disposed in the magnetic ring, and the limiting section passes through the connecting plate to be engaged with the limiting hole and is fixedly connected to the connecting plate.

10. A refrigeration system comprising an electronic expansion valve according to any of claims 1 to 9.

11. An automobile comprising the refrigeration system of claim 10.

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