WO2024021870A1 - Electronic expansion valve assembly, electronic expansion valve and refrigeration apparatus - Google Patents

Abstract

An electronic expansion valve assembly, comprising a connecting seat (200), a first sealing member (300) and a second sealing member (400), wherein the first sealing member (300) is arranged at the lower end of the connecting seat and is used for being fitted to an inner wall of a valve seat (100); the second sealing member (400) is arranged at the upper end of the connecting seat and is used for being fitted to the inner wall of the valve seat (100); and the connecting seat (200) is provided with a channel. The electronic expansion valve assembly is used for being mounted on a valve seat (100) of an electronic expansion valve (10). Further disclosed are an electronic expansion valve and a refrigeration apparatus, which comprise the electronic expansion valve assembly.

Description

Electronic expansion valve components, electronic expansion valves and refrigeration equipment

Related applications

This application claims priority to the Chinese patent application with application number 202210890230.4 filed on July 27, 2022, the entire content of which is incorporated into this application by reference.

Technical field

The present application relates to the technical field of fluid control components, and in particular to an electronic expansion valve assembly, electronic expansion valve and refrigeration equipment.

Background technique

The electronic expansion valve is an important component in the refrigeration system. It mainly plays the role of throttling, reducing pressure and regulating flow. In related technologies, the electronic expansion valve includes components such as a valve seat component, a nut component, a valve core component, and a magnetic rotor component. The valve seat component is provided with a valve port component, and the valve port component is provided with a valve port. When the electronic expansion valve operates, The energized coil surrounding the valve housing drives the magnetic rotor assembly to rotate, thereby driving the valve core assembly to move axially, thereby controlling the opening or closing of the valve port, thereby achieving the functions of throttling, reducing pressure and regulating flow. The valve seat and the valve core assembly are usually connected to the guide sleeve through a connecting seat. The guide sleeve and the connecting seat are respectively provided with seals. Such a setting has poor sealing effect and the electronic expansion valve is prone to leakage when in use.

Technical solutions

The main purpose of this application is to propose an electronic expansion valve assembly, electronic expansion valve and refrigeration equipment, aiming to solve the problem of internal and external leakage of the electronic expansion valve.

In order to achieve the above purpose, the electronic expansion valve assembly proposed in this application is used to be installed on the valve seat of the electronic expansion valve. The electronic expansion valve assembly includes:

Connecting seat;

A first sealing member is provided at the lower end of the connecting seat to cooperate with the inner wall of the valve seat; and

A second sealing member is provided at the upper end of the connecting seat to cooperate with the inner wall of the valve seat;

Wherein, the connecting seat is provided with a channel.

In one embodiment, the connecting base is provided with a first groove, and the first sealing member is provided in the first groove; and/or the connecting base is provided with a second groove, and the second The sealing member is located in the second groove.

In one embodiment, the connection base includes a positioning section and a guide section connected to the positioning section, the first groove is provided at an end of the guide section away from the positioning section, and the second groove It is located at one end of the guide section close to the positioning section.

In one embodiment, the electronic expansion valve assembly further includes a valve port assembly. The valve port assembly is provided at an end of the guide section away from the positioning section. The valve port assembly has a valve port. The valve port Can be connected to the channel.

In one embodiment, the valve port assembly and the connecting seat are integrally formed.

In one embodiment, the valve port assembly is made of non-metallic material, and the electronic expansion valve assembly further includes a gasket, which is fixedly connected to an end of the guide section away from the positioning section, and the valve port assembly The assembly is disposed between the gasket and the guide section.

In one embodiment, the electronic expansion valve assembly further includes a valve core assembly that is movably disposed on the guide section, and the valve core assembly is used to guide the channel and the valve port. pass or block.

In one embodiment, the valve core assembly is provided with a third groove, and the third groove is provided with a third sealing member.

In one embodiment, the electronic expansion valve assembly further includes a valve housing, which is sleeved outside the valve core assembly and connected to the positioning section.

This application also proposes an electronic expansion valve, which includes:

valve seat; and

According to the electronic expansion valve assembly according to any of the above embodiments, the electronic expansion valve assembly is installed on the valve seat.

This application also proposes a refrigeration equipment, which includes the electronic expansion valve as described in the previous embodiment.

Description of drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of an embodiment of the electronic expansion valve assembly of the present application;

Figure 2 is a schematic structural diagram of an embodiment of the electronic expansion valve of the present application;

Figure 3 is an enlarged view of point A in Figure 1;

Figure 4 is a schematic diagram of the valve seat structure of an embodiment of the electronic expansion valve of the present application;

Figure 5 is a partial structural schematic diagram of an embodiment of the electronic expansion valve of the present application;

Figure 6 is a schematic structural diagram of the connection seat of an embodiment of the electronic expansion valve of the present application;

Figure 7 is a schematic structural diagram of a valve core assembly of an electronic expansion valve according to an embodiment of the present application.

Explanation of reference numbers:

label name label name 10 Electronic expansion valve 500 Valve assembly 100 valve seat 510 valve port 130 first interface 600 Gasket 140 Second interface 700 Valve core assembly 200 Connecting seat 710 Valve head 210 positioning segment 711 third groove 220 guide section 712 third seal 221 first groove 720 Stem 222 second groove 730 Bearing 230 Through hole 810 nut 300 first seal 900 valve housing 400 Second seal 910 Accommodation cavity

The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings.

Embodiments of the invention

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

It should be noted that if there are directional instructions (such as up, down, left, right, front, back...) in the embodiments of the present application, the directional instructions are only used to explain the position of a certain posture (as shown in the accompanying drawings). The relative positional relationship, movement conditions, etc. between the components under the display). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving “first”, “second”, etc. in the embodiments of this application, the descriptions of “first”, “second”, etc. are only for descriptive purposes and shall not be understood as indications or implications. Its relative importance or implicit indication of the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, if "and/or" appears in the full text, it means including three parallel plans, taking "A and/or B" as an example, including plan A, or plan B, or a plan that satisfies both A and B at the same time. . In addition, the technical solutions in various embodiments can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist. , nor is it within the scope of protection required by this application.

The electronic expansion valve 10 is an important component in the refrigeration system. It mainly plays the role of throttling, reducing pressure and regulating flow. In related technology, the electronic expansion valve 10 includes a valve seat assembly, a nut assembly 800, a valve core assembly 700, a magnetic rotor assembly and other components. The valve seat assembly is provided with a valve port assembly 500, and the valve port assembly 500 is provided with a valve port 510. When the electronic expansion valve 10 is working, the energized coil surrounding the outside of the valve housing 900 drives the magnetic rotor assembly to rotate, thereby driving the valve core assembly 700 to move axially, thereby controlling the opening or closing of the valve port 510, thereby achieving throttling reduction. pressure and regulate flow. The valve seat 100 and the valve core assembly 700 of the existing electronic expansion valve 10 are usually connected to the guide sleeve through the connecting seat 200. The guide sleeve and the connecting seat 200 are respectively provided with seals. Such an arrangement has poor sealing effect and the electronic expansion valve 10. Leaks are prone to occur during use. In the electronic expansion valve 10 proposed in this application, the connecting seat 200 has internal and external sealing grooves (first groove 221 and second groove 222), and the external sealing member (second sealing member 400) can effectively solve the problem of external leakage of the valve body. The inner seal (first seal 300) can effectively solve the internal leakage problem of the valve body, and the product reliability is higher. In the electronic expansion valve 10 of the technical solution of this application, the internal and external seals are arranged on the same part, that is, the connecting seat 200, so that the coaxiality can be effectively guaranteed, thereby ensuring the performance of preventing internal and external leakage.

The electronic expansion valve 10 proposed in this application can be applied to a vehicle refrigeration system. The fluid medium flowing through the electronic expansion valve 10 is the refrigerant used for heat and cold exchange in the vehicle refrigeration system. At this time, the electronic expansion valve 10 is installed at the evaporator inlet of the vehicle refrigeration system. The electronic expansion valve 10 serves as the dividing element between the high-pressure side and the low-pressure side of the vehicle refrigeration system, throttling and depressurizing the high-pressure liquid refrigerant, thereby regulating and controlling The amount of liquid refrigerant entering the evaporator enables the amount of liquid refrigerant to adapt to the requirements of the external refrigeration load. Alternatively, the electronic expansion valve 10 is applied to other types of refrigeration equipment. The fluid medium flowing through the electronic expansion valve 10 can also be other fluid media besides refrigerant, as long as the electronic expansion valve 10 can achieve throttling of this type of fluid medium. It suffices to reduce the pressure by flowing, and there is no specific restriction on this.

The electronic expansion valve assembly proposed in this application is used to be installed on the valve seat 100 of the electronic expansion valve 10. The electronic expansion valve assembly includes a connecting seat 200, a first seal 300, and a second seal 400. Please refer to Figure 1. In one embodiment of the present application, the first sealing member 300 is provided at the lower end of the connecting seat 200 to cooperate with the inner wall of the valve seat 100; the second sealing member 400 is provided at the upper end of the connecting seat 200 to cooperate with the inner wall of the valve seat 100. It cooperates with the inner wall of the valve seat 100; the connecting seat 200 is provided with a channel.

Please refer to Figure 2. The valve seat 100 has a first interface 130 and a second interface 140. When the electronic expansion valve assembly is installed on the valve seat 100, the first interface 130 and the second interface 140 can be connected through the passage of the connecting seat 200. Specifically, , the connecting base 200 is hollow inside, and at least one through hole 230 is provided on the side wall, and the through hole 230 can connect the inner and outer spaces of the connecting base 200 . The first sealing member 300 and the second sealing member 400 may be sealing rings made of elastic materials such as rubber or silicone. Taking the first interface 130 as the refrigerant inlet as an example, the first seal 300 is disposed at the lower end of the connecting seat 200 and has an interference fit with the outer wall of the connecting seat 200 and the inner wall of the valve seat 100, effectively preventing the inflow of refrigerant from the first interface 130. The refrigerant flows to the second interface 140 through the gap between the connecting seat 200 and the valve seat 100, thus solving the problem of internal leakage of the electronic expansion valve 10; the second seal 400 is disposed at the upper end of the connecting seat 200, and is in contact with the connecting seat 200. The outer wall of the valve seat 100 and the inner wall of the valve seat 100 all have an interference fit, which effectively prevents the refrigerant flowing in from the first interface 130 from flowing to the outside of the electronic expansion valve 10 through the gap between the connecting seat 200 and the valve seat 100, thus solving the problem of electronic expansion. The problem of external leakage of valve 10. Furthermore, since the first seal 300 and the second seal 400 are disposed on the same component, namely the connecting seat 200, the coaxiality can be effectively ensured, further ensuring the internal and external leakage prevention performance.

The electronic expansion valve assembly of the present application is used to be installed on the valve seat 100 of the electronic expansion valve 10 . The electronic expansion valve assembly includes a connecting seat 200 , a first seal 300 , and a second seal 400 . The first seal 300 is provided at the lower end of the connecting seat 200 to cooperate with the inner wall of the valve seat 100; the second seal 400 is provided at the upper end of the connecting seat 200 to cooperate with the inner wall of the valve seat 100; wherein, the connecting seat 200 is provided with There is a passage. In the electronic expansion valve assembly of the present application, the connecting seat 200 has internal and external sealing grooves (first groove 221 and second groove 222), and the outer sealing member (second sealing member 400) can effectively solve the problem of external leakage of the valve body. The seal (the first seal 300) can effectively solve the internal leakage problem of the valve body, and the product reliability is higher. In the electronic expansion valve assembly of the present application, the internal and external seals are arranged on the same part, that is, the connecting seat 200, so that the coaxiality can be effectively guaranteed, thereby ensuring the performance of preventing internal and external leakage.

Please refer to Figure 1, Figure 5 and Figure 6. In one embodiment of the present application, the connecting base 200 is provided with a first groove 221, and the first seal 300 is provided in the first groove 221; and/or the connecting base 200 is provided with a first groove 221. There is a second groove 222, and the second seal 400 is provided in the second groove 222. It can be understood that the first groove 221 is provided on the connecting seat 200, which can play a better limiting role for the first seal 300, and the connecting seat 200 and the inner wall of the valve seat 100 can be closely matched, thereby improving the stability of the product. In the same way, the second groove 222 is provided on the connecting seat 200, which can play a better limiting role for the second seal 400 and further improve the stability of the product.

Please refer to Figures 1, 2, 5 and 6. In one embodiment of the present application, the connection base 200 includes a positioning section 210 and a guide section 220 connected to the positioning section 210. The first groove 221 is provided in the guide section 220. Far away from the end of the positioning section 210 , the second groove 222 is provided at an end of the guide section 220 close to the positioning section 210 . The outer wall of the positioning section 210 is provided with threads, and the inner wall of one end of the valve seat 100 is provided with threads. When the electronic expansion valve assembly is installed on the valve seat 100, the outer wall of the positioning section 210 is threadedly connected to the inner wall of the valve seat 100. In other embodiments, the positioning section 210 and the port 110 may also be fixedly connected by welding or riveting, which is not subject to excessive limitations. The first groove 221 is provided at the end of the guide section 220 away from the positioning section 210, that is, the end of the guide section 220 close to the second interface 140. The first seal 300 is placed in the first groove 221. When the electronic expansion valve assembly is installed on the valve When the seat 100 is installed, the first seal 300 is an interference fit with the bottom of the first groove 221 and the inner wall of the valve seat 100 respectively; the second groove 222 is provided at one end of the guide section 220 close to the positioning section 210, and the second seal 400 Placed in the second groove 222, when the electronic expansion valve assembly is installed on the valve seat 100, the second seal 400 interferes with the bottom of the second groove 222 and the inner wall of the valve seat 100, thereby sealing the valve seat 100 inside and outside. Space barrier. The second groove 222 is provided in the guide section 220 , so the positioning section 210 does not need to have a vacant position to provide a groove for accommodating the second seal 400 . In this way, the connection between the positioning section 210 and the valve seat 100 can be more stable.

Please refer to Figure 1. In one embodiment of the present application, the electronic expansion valve assembly also includes a valve port assembly 500. The valve port assembly 500 is provided at an end of the guide section 220 away from the positioning section 210. The valve port assembly 500 has a valve port 510. Port 510 is connected to the channel. The valve port assembly 500 and the connecting seat 200 may be integrally formed or may be designed separately. The valve port assembly 500 is disposed at one end of the guide section 220 away from the positioning section 210, so that the channel of the connecting seat 200 is connected to the second interface 140 through the valve port 510, so that the refrigerant can flow into the channel from the first interface 130, pass through the valve port 510, and then It flows out from the second interface 140; conversely, the refrigerant flows in from the second interface 140, enters the channel through the valve port 510, and then flows out from the first interface 130.

In one embodiment of the present application, the valve port assembly 500 and the connecting seat 200 are integrally formed. The valve port assembly 500 and the connecting seat 200 are both made of metal and formed in one piece. Preferably, the material is aluminum with lighter weight, which can reduce the weight of the electronic expansion valve assembly.

Please refer to Figure 1. In one embodiment of the present application, the valve port assembly 500 is made of non-metallic material. The electronic expansion valve assembly also includes a gasket 600. The gasket 600 is fixedly connected to the end of the guide section 220 away from the positioning section 210. The valve port The assembly 500 is disposed between the gasket 600 and the guide section 220 . The separate design of the valve port assembly 500 and the connecting seat 200 facilitates the processing of the valve port assembly 500 and the connecting seat 200 and reduces the difficulty of processing. When the electronic expansion valve 10 is closed, the valve head 710 of the valve core assembly 700 closely cooperates with the valve port assembly 500 to block the channel and the valve port 510. The valve port assembly 500 is made of non-metallic materials, such as PP, PC or rubber. , so that the hardness of the valve port assembly 500 is lower than the hardness of the valve head 710, a soft fit can be formed between the two, and the sealing performance is better. The gasket 600 is made of metal and is fixedly connected to the guide section 220 by welding or riveting. The valve port assembly 500 is embedded between the guide section 220 and the gasket 600 .

Please refer to Figure 1. In one embodiment of the present application, the electronic expansion valve assembly also includes a valve core assembly 700. The valve core assembly 700 is movably disposed on the guide section 220. The valve core assembly 700 is used to guide the channel to the valve port 510. pass or block. It can be understood that the guide section 220 is used to guide the movement of the valve core assembly 700 . Specifically, the valve core assembly 700 is movably disposed on the valve seat 100 and passes through the guide section 220 of the connecting seat 200 to communicate or block the passage with the valve port 510 to open or close the electronic expansion valve 10 . Specifically, please refer to Figures 1, 2 and 7. The electronic expansion valve assembly also includes a nut 810. The valve core assembly 700 includes a valve head 710 and a valve stem 720. The valve stem 720 is rotationally connected to the valve head 710 and is threaded with the nut 810. In cooperation, the valve head 710 extends into the guide section 220 and guides and cooperates with the guide section 220; when the valve stem 720 rotates, the valve stem 720 can drive the valve head 710 to move up and down relative to the guide section 220. It can be understood that the valve stem 720 and the valve head 710 are connected through the bearing 730, and the nut 810 is threaded with the valve stem 720. When the valve stem 720 is rotated under the driving of the power source, the valve stem 720 can move up and down relative to the nut 810, and the valve The head 710 is driven by the valve stem 720 to move up and down relative to the connecting seat 200 to approach or move away from the valve port 510 . When the valve head 710 is tightly matched with the valve port assembly 500, the passage is blocked by the valve head 710, thereby blocking the fluid medium in the electronic expansion valve assembly from being discharged outward through the valve port 510; when the valve head 710 is separated from the valve port assembly 500 , then the channel is connected to the valve port 510, and the fluid medium in the electronic expansion valve assembly can be discharged outward through the valve port 510.

Please refer to Figures 3 and 7. In an embodiment of the present application, the valve core assembly 700 is provided with a third groove 711, and the third groove 711 is provided with a third seal 712. Specifically, the third sealing member 712 is provided at the mating position between the valve head 710 and the guide section 220 . In order to improve the operating performance of the valve core assembly 700, a balancing hole is opened in the valve head 710 of the valve core assembly 700 to balance the pressure difference within the valve. When the electronic expansion valve assembly is in a closed state, a third seal 712 is provided at the mating place between the valve head 710 and the guide section 220 to prevent the fluid medium from passing through the mating place between the valve head 710 and the guide section 220 and then entering through the balance hole. Internal leakage occurs inside the valve head 710 and then flows out of the valve port 510. The third sealing member 712 can be a silicone sealing ring or a rubber sealing ring. Since the valve head 710 needs to move back and forth, in order to prevent the third sealing member 712 from being worn, a wear-resistant layer can be provided on the outer side of the third sealing member 712 so that The wear-resistant layer is in contact with the guide section 220, so that when the valve core assembly 700 moves, the third seal 712 will not be rubbed, thereby ensuring the sealing performance of the third seal 712. There are many materials for the wear-resistant layer. In one embodiment, the material of the wear-resistant layer 501 is polytetrafluoroethylene. Polytetrafluoroethylene (PTFE for short) is a polymer made by polymerizing tetrafluoroethylene as a monomer. It has excellent heat resistance and cold resistance and can be used for a long time at -110°C to 260°C. The friction coefficient of PTFE is extremely low, which plays a lubricating role, thereby reducing the frictional resistance between the guide section 220 and the third seal 712 to prevent the third seal 712 from being damaged by friction with the guide section 220, thereby improving the The service life of the third seal 712 is increased.

Please refer to FIG. 1 . In one embodiment of the present application, the electronic expansion valve assembly further includes a valve housing 900 . The valve housing 900 is sleeved outside the valve core assembly 700 and connected to the positioning section 210 . The valve housing 900 is generally cylindrical in design, and the valve housing 900 and the connecting seat 200 can be fixed by welding. An accommodating cavity 910 is formed inside the valve housing 900. In addition to the valve stem 720, the accommodating cavity 910 also contains a nut 810 and a rotor assembly. The rotor assembly is connected to the valve stem 720. The valve stem 720 rotates driven by the rotor assembly, and the valve The rod 720 is threaded with the nut 810 to convert the rotational motion into upward and downward movement, thereby driving the valve head 710 to move up and down in the guide section 220 .

Referring to Figures 2 and 4, this application also proposes an electronic expansion valve 10. The electronic expansion valve includes a valve seat 100, and an electronic expansion valve assembly as described in any of the above embodiments. The electronic expansion valve assembly Installed on the valve seat 100.

The valve seat 100 can be an independent valve seat, or the valve seat 100 can be an integrated module such as a valve island. The valve seat 100 serves as a carrier for installing various components of the electronic expansion valve 10, so that the various components can be assembled to form a whole. Specifically, the valve seat 100 can have a cylindrical structure so that its shape is regular and easy to process and form. The valve seat 100 is made of metal aluminum, which can reduce the weight of the electronic expansion valve 10 . Of course, in other embodiments, the valve seat 100 may also have a square structure or other shapes, and may be made of other materials, which are not listed here. The specific structure of the electronic expansion valve assembly refers to the above-mentioned embodiments. Since the electronic expansion valve 10 adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments. Herein I won’t go into details one by one.

The working principle of the electronic expansion valve 10 is as follows:

The stator assembly of the electronic expansion valve 10 generates a magnetic field after being energized. The rotor assembly made of magnetic material rotates under the drive of the magnetic field. The rotor assembly is fixedly connected to the valve stem 720. The rotation of the rotor assembly drives the valve stem 720 to rotate. The valve stem 720 is connected to the valve stem 720. A threaded matching relationship is formed between the nuts 810. The nut 810 is fixedly arranged on the connecting seat 200. Therefore, the rotation of the valve stem 720 relative to the nut 810 will drive the valve stem 720 to move up and down relative to the nut 810, thereby realizing the stator assembly driving the rotor assembly to move. The rotor assembly The working process of driving the valve core assembly 700 to move; the valve head 710 moves toward the valve port 510 driven by the valve stem 720. When the valve head 710 blocks the passage from the valve port 510, the electronic expansion valve 10 closes; when the valve head 710 is released When the channel is closed, that is, when the channel and the valve port 510 are connected to each other, the electronic expansion valve 10 is opened. Since the opening diameter of the channel in the electronic expansion valve 10 is relatively small, the flow rate of the fluid medium is reduced, thereby realizing the opening of the electronic expansion valve 10 to The throttling and pressure reduction process of fluid media.

This application also proposes a refrigeration equipment including the electronic expansion valve 10 described in the previous embodiment. The refrigeration system can be a refrigeration system of an air conditioner, a freezer, a refrigerator, a heat pump water heater, or other refrigeration and heating equipment, and the electronic expansion valve 10 can control the flow of refrigerant medium in the refrigeration system. The specific structure of the electronic expansion valve 10 refers to the above-mentioned embodiments. Since the refrigeration equipment adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be explained here. Let’s not go into details.

The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Under the application concept of the present application, equivalent structural transformations made by using the contents of the description and drawings of the present application, or direct/indirect application Other related technical fields are included in the patent protection scope of this application.

Claims (11)

An electronic expansion valve assembly for installation on a valve seat of an electronic expansion valve, wherein the electronic expansion valve assembly includes: Connecting seat; A first sealing member is provided at the lower end of the connecting seat to cooperate with the inner wall of the valve seat; and A second sealing member is provided at the upper end of the connecting seat to cooperate with the inner wall of the valve seat; Wherein, the connecting seat is provided with a channel. The electronic expansion valve assembly according to claim 1, wherein the connecting seat is provided with a first groove, the first sealing member is provided in the first groove; and/or the connecting seat is provided with a first groove. Two grooves, the second sealing member is provided in the second groove. The electronic expansion valve assembly of claim 2, wherein the connection seat includes a positioning section and a guide section connected to the positioning section, and the first groove is provided on the guide section away from the positioning section. At one end, the second groove is provided at one end of the guide section close to the positioning section. The electronic expansion valve assembly according to claim 3, wherein the electronic expansion valve assembly further includes a valve port assembly, the valve port assembly is provided at an end of the guide section away from the positioning section, the valve port assembly There is a valve port that can communicate with the channel. The electronic expansion valve assembly according to claim 4, wherein the valve port assembly and the connecting seat are integrally formed. The electronic expansion valve assembly according to claim 4 or 5, wherein the valve port assembly is made of non-metallic material, the electronic expansion valve assembly further includes a gasket, the gasket and the guide section are away from the positioning One end of the segment is fixedly connected, and the valve port assembly is disposed between the gasket and the guide segment. The electronic expansion valve assembly according to claim 4 or 5, wherein the electronic expansion valve assembly further includes a valve core assembly, the valve core assembly is movably provided on the guide section, and the valve core assembly is used to Connect or block the passage from the valve port. The electronic expansion valve assembly of claim 7, wherein the valve core assembly is provided with a third groove, and the third groove is provided with a third seal. The electronic expansion valve assembly according to claim 7 or 8, wherein the electronic expansion valve assembly further includes a valve housing, which is sleeved outside the valve core assembly and connected to the positioning section. An electronic expansion valve, wherein the electronic expansion valve includes: valve seat; and The electronic expansion valve assembly according to any one of claims 1 to 9, which is installed on the valve seat. A refrigeration equipment, wherein the refrigeration equipment includes the electronic expansion valve according to claim 10.