Valve assembly, solenoid valve, and air conditioning system

Abstract

A valve assembly (100), a solenoid valve (200), and an air conditioning system (300). The valve assembly (100) comprises a valve body (5), a valve core component (10), and a core iron assembly (3). The valve body (5) has a valve cavity (501) and a valve port (502) communicated with the valve cavity (501); the valve core component (10) is movably arranged in the valve cavity (501); the core iron assembly (3) comprises an ejector rod (33); the ejector rod (33) is located on the side of the valve core component (10) facing away from the valve port (502); the valve core component (10) moves towards the valve port (502) under the push of the ejector rod (33) and blocks the valve port (502); the valve core component (10) comprises a valve core (1) and a reinforcing member (2); the reinforcing member (2) is connected to the side of the valve core (1) close to the ejector rod (33); and the ejector rod (33) abuts against the reinforcing member (2) so as to push the valve core (1) to block the valve port (502).

Description

Valve assembly, solenoid valve and air conditioning system

[0001] Related applications

[0002] The present application claims priority to the Chinese patent application No. 202422835701.9 filed on November 20, 2024, entitled "A valve assembly and solenoid valve having the same", and the Chinese patent application No. 202422360380.1 filed on September 26, 2024, entitled "Solenoid valve and air conditioning system", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present application belongs to the technical field of valves, and in particular relates to a valve assembly, a solenoid valve and an air conditioning system. BACKGROUND

[0004] The normally open solenoid valve includes a valve core, a top rod and a coil. The working principle of the normally open solenoid valve is to control the opening and closing of the solenoid valve by whether the coil is powered or not. In a normal case, when the coil is powered, it will generate an electromagnetic field, which in turn drives the top rod to hit the valve core, pushing the valve core to move towards the valve port to achieve the closing of the solenoid valve. When the coil is powered off, the top rod moves reversely, and the valve core resets, and the solenoid valve opens.

[0005] However, the valve core of the related solenoid valve is mostly made of brass, and the top rod is made of stainless steel. If the top rod directly hits the valve core, the valve core will be deformed due to repeated opening and closing of the valve. Specifically, the upper end face of the valve core is deformed by the impact, causing the actual contact surface between the valve core and the top rod to move downward, and the distance of the top rod pushing the valve core is not enough. The sealing gasket cannot normally contact the valve port, resulting in product internal leakage or failure to close the valve. SUMMARY

[0006] According to various embodiments of the present application, a valve assembly, a solenoid valve and an air conditioning system are provided.

[0007] A valve assembly includes a valve body having a valve cavity and a valve port in communication with the valve cavity.

[0008] A valve core component movably arranged in the valve cavity for blocking or opening the valve port.

[0009] A core iron assembly includes a top rod, the top rod being located on a side of the valve core component away from the valve port, and the valve core component moves towards the valve port and blocks the valve port under the pushing of the top rod.

[0010] The valve core component includes a valve core and a reinforcing member, the reinforcing member being connected to a side of the valve core close to the top rod, and the top rod abuts against the reinforcing member to push the valve core body to block the valve port.

[0011] In one of the embodiments, the strength of the reinforcing member is greater than that of the valve core.

[0012] In one of the embodiments, a receiving groove is formed on the valve core and extends to the inside of the valve core, the reinforcing member is arranged in the receiving groove and connected with the valve core, the reinforcing member is located directly below the ejector rod, and the ejector rod moves towards the valve core and abuts against the reinforcing member.

[0013] In one of the embodiments, the receiving groove comprises a first groove section and a second groove section which are sequentially connected towards the direction of the ejector rod, the inner diameter of the second groove section is greater than that of the first groove section, the reinforcing member is in interference fit with the first groove section, and the reinforcing member is in clearance fit with the second groove section.

[0014] In one of the embodiments, a transition slope is arranged between the first groove section and the second groove section, the inner diameter of the transition slope gradually increases from the first groove section towards the second groove section, and / or the inner side wall of the port of the receiving groove near the ejector rod is in reverse conical surface.

[0015] In one of the embodiments, the reinforcing member is in cylindrical structure, and a guide slope is arranged on at least one end of the reinforcing member along the axial direction of the reinforcing member.

[0016] In one of the embodiments, along the axial direction of the reinforcing member, the reinforcing member is in T-shaped structure in cross-sectional shape, the shape of the receiving groove is adapted to that of the reinforcing member, an external thread is arranged on the outer peripheral side wall of the reinforcing member, an internal thread is arranged in the receiving groove, and the reinforcing member is fixedly connected with the receiving groove in threaded connection.

[0017] In one of the embodiments, the reinforcing member is in prismatic structure or cylindrical structure, the shape of the receiving groove is adapted to that of the reinforcing member, a lap joint portion is arranged on the upper end surface of the reinforcing member, a lap joint groove is arranged above the receiving groove for accommodating the lap joint portion, a plurality of sets of screw holes are oppositely arranged on the open peripheral side of the receiving groove and the lap joint portion, the lap joint portion is arranged in the lap joint groove, and the reinforcing member is connected with the valve core through the plurality of bolts; and the peripheral side wall of the reinforcing member is closely arranged with the side wall of the receiving groove.

[0018] In one of the embodiments, along the axial direction of the reinforcing member, the longitudinal cross section of the reinforcing member is in convex shape, the longitudinal cross section of the receiving groove is in convex shape, a reinforcing member mounting port is formed on the side wall of the valve core, a plurality of first screw holes are formed on the top wall of the valve core located on the peripheral side of the top opening of the receiving groove, a second screw hole is formed on the upper end surface of the peripheral side of the convex portion of the reinforcing member, the second screw hole is arranged corresponding to the first screw hole, and a connecting member sequentially passes through the first screw hole and the second screw hole to connect and fix the reinforcing member with the valve core.

[0019] In one of the embodiments, a plurality of clamping grooves extending along their own axial direction are formed on the peripheral sidewall of the reinforcing member, and a plurality of clamping strips matching the clamping grooves are arranged on the inner sidewall of the accommodating groove, the clamping strips being embedded in the oppositely arranged clamping grooves, and the reinforcing member sliding along the clamping strips into the accommodating groove.

[0020] In one of the embodiments, a plurality of through holes extending along the axial direction of the reinforcing member are formed on the reinforcing member.

[0021] The application further provides an electromagnetic valve comprising the valve assembly.

[0022] In the electromagnetic valve, the core iron assembly is arranged in the valve cavity and located on the side of the valve core away from the valve port, for driving the valve core to move, wherein one or both of the end face of the core iron assembly close to the valve core and the end face of the valve core close to the core iron assembly are provided with flow-through grooves, and the flow-through grooves are communicated with the valve cavity.

[0023] In one of the embodiments, the number of the flow-through grooves is plural, and the plural flow-through grooves are arranged in the circumferential direction of the core iron assembly.

[0024] In one of the embodiments, the core iron assembly further comprises a moving iron core and a static iron core, the static iron core is limitingly connected to the valve body, and the moving iron core is movably arranged on the side of the static iron core away from the valve core; one end of the top rod is connected to the moving iron core, and the other end of the top rod is arranged through the static iron core and abuts against the valve core, and the top rod can push the valve core to move synchronously to close the valve port along with the movement of the moving iron core towards the static iron core; wherein the flow-through grooves are formed on the end face of the static iron core close to the valve core.

[0025] In one of the embodiments, the valve body comprises a guide pipe, one end of the guide pipe is inserted into the valve body and connected with the valve body; wherein the end of the static iron core close to the valve core protrudes in the direction away from the axis of the static iron core to form a first step, and the inner wall of the valve body is provided with a second step, one end of the first step abutting against the second step and the other end of the first step abutting against the end face of the guide pipe along the axial direction of the static iron core.

[0026] The application further provides an air conditioning system comprising the electromagnetic valve.

[0027] The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the application will be apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF DRAWINGS

[0028] For a better description and illustration of the embodiments and / or examples of the inventions disclosed herein, reference can be made to one or more of the accompanying drawings. Additional details or examples used to describe the drawings should not be considered limiting to the scope of any of the disclosed inventions, the presently described embodiments and / or examples, and the best mode presently understood of these inventions.

[0029] Fig. 1 is a sectional view of an electromagnetic valve according to an embodiment of the present application.

[0030] Fig. 2 is an enlarged view of portion A in Fig. 1.

[0031] Fig. 3 is a sectional view of a valve assembly according to an embodiment of the present application.

[0032] Fig. 4 is a sectional view of a reinforcing member according to an embodiment of the present application.

[0033] Fig. 5 is a structural view of a receiving groove according to an embodiment of the present application.

[0034] Fig. 6 is a structural view of a spool according to an embodiment of the present application.

[0035] Fig. 7 is a structural view of a reinforcing member according to an embodiment of the present application.

[0036] Fig. 8 is a longitudinal sectional view of a reinforcing member according to an embodiment of the present application.

[0037] Fig. 9 is a longitudinal sectional view of a reinforcing member according to an embodiment of the present application.

[0038] Fig. 10 is a longitudinal sectional view of a reinforcing member according to an embodiment of the present application.

[0039] Fig. 11 is a structural view of a receiving groove according to an embodiment of the present application.

[0040] Fig. 12 is a structural view of a reinforcing member according to an embodiment of the present application.

[0041] Fig. 13 is a bottom view of a static core according to an embodiment of the present application.

[0042] Fig. 14 is a structural view of an air conditioning system according to an embodiment of the present application.

[0043] The symbols in the figure represent the following meanings: 1, valve core; 10, valve core component; 2, reinforcing member; 3, core iron assembly; 33, top rod; 4, bolt; 5, valve body; 6, head; 101, assembly hole; 11, accommodating groove; 111, first groove section; 112, second groove section; 113, transition inclined surface; 114, clamping strip; 115, inverted conical annular surface; 12, second elastic member; 13, elastic support member; 14, gasket; 21, through hole; 22, guide inclined surface; 23, clamping groove; 24, lapping portion; 301, flow-through groove; 31, moving iron core; 32, stationary iron core; 321, first step; 34, first elastic member; 501, valve cavity; 502, valve port; 51, second step; 52, conduit; 100, valve assembly; 200, electromagnetic valve; 300, air conditioning system. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one exemplary embodiment is merely illustrative in nature and not intended to be limiting on the application or its application or uses. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0045] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0046] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in the specification of the present application are for illustrative purposes only and do not represent the only implementation.

[0047] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an ordered sequence. Thus, features defined with "first", "second" etc. can include at least one of the features. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0048] In the present application, unless otherwise explicitly specified and limited, the "on", "under", "above" and "over" of the first feature to the second feature can be that the first feature directly contacts the second feature, or the first feature indirectly contacts the second feature through an intermediate medium. Moreover, the "on", "above" and "over" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The "under", "below" and "under" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0049] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more of the related listed items.

[0050] The present application provides a valve assembly 100. The valve assembly 100 comprises a valve body 5, a valve core component 10 and a core iron assembly 3. The valve body 5 has a valve cavity 501 and a valve port 502 communicating with the valve cavity 501. The valve core component 10 is movably arranged in the valve cavity 501 for closing or opening the valve port 502. The core iron assembly 3 comprises a top rod 33, which is located on the side of the valve core component 10 away from the valve port 502, and the valve core component 10 is moved towards the valve port 502 and closed to the valve port 502 under the pushing of the top rod 33.

[0051] The valve core component comprises a valve core 1 and a reinforcing piece 2 connected to the valve core 1 on the side close to the top rod 33, and the top rod 33 abuts against the reinforcing piece 2 to push the valve core body 1 to close to the valve port 502.

[0052] The strength of the reinforcing piece 2 is greater than that of the valve core 1. It can be understood that by arranging a reinforcing piece 2 with high strength on the valve core 1, when the solenoid valve is closed, the top rod 33 directly hits the reinforcing piece 2 instead of the valve core 1, which can avoid the problem that the actual valve opening action is unqualified due to the deformation of the valve core 1. That is, by arranging the reinforcing piece 2, the overall anti-deformation ability of the valve core component 10 is improved, the deformation caused by the impact of the top rod 33 is avoided, and the normal operation of the solenoid valve 200 is ensured.

[0053] As shown in FIGS. 1-7, in some embodiments, the reinforcing member 2 is arranged inside the valve core 1, specifically, a receiving groove 11 extending into the valve core 1 is formed on the valve core 1, the reinforcing member 2 is arranged in the receiving groove 11 and connected with the valve core 1, the reinforcing member 2 is located directly below the top rod 33, and the top rod 33 moves towards the valve core 1 and abuts against the reinforcing member 2. It can be understood that by forming the receiving groove 11 on the valve core 1 for accommodating the reinforcing member 2, the connection between the reinforcing member 2 and the valve core 1 is more stable without changing the external contour of the valve core 1 and other components of the valve assembly.

[0054] In some embodiments, the receiving groove 11 includes a first groove section 111 and a second groove section 112 connected in sequence towards the direction close to the top rod 33, the inner diameter of the second groove section 112 is larger than that of the first groove section 111, the reinforcing member 2 is in interference fit with the first groove section 111, and the reinforcing member 2 is in clearance fit with the second groove section 112.

[0055] It can be understood that the inner diameter of the first groove section 111 is equal to the outer diameter of the reinforcing member 2, achieving the interference fit between the first groove section 111 and the reinforcing member 2, realizing the tight fit connection between the reinforcing member 2 and the valve core 1, fixing the connection between the reinforcing member 2 and the valve core 1, and ensuring the stability of the connection. The inner diameter of the second groove section 112 is slightly larger than the outer diameter of the reinforcing member 2, achieving the clearance fit between the second groove section 112 and the reinforcing member 2, reducing the friction between the reinforcing member 2 and the receiving groove 11 within a certain range, and facilitating the installation of the reinforcing member 2. In this way, the stability of the connection between the reinforcing member 2 and the receiving groove 11 is ensured, and the difficulty of installing the reinforcing member 2 is reduced.

[0056] As shown in FIGS. 1-7, in some embodiments, a transition slope 113 is arranged between the first groove section 111 and the second groove section 112, the inner diameter of the transition slope 113 gradually increases from the first groove section 111 towards the second groove section 112, and the inner side wall of the port of the receiving groove 11 close to the top rod 33 is in the shape of an inverted conical ring 115. Of course, in other embodiments, the first groove section 111 and the second groove section 112 can be directly connected. It can be understood that the transition slope 113 connects the first groove section 111 and the second groove section 112, ensuring the connection continuity between the first groove section 111 and the second groove section 112, and further ensuring the structural stability of the valve core 1. The design of the inverted conical ring 115 can reduce the friction between the reinforcing member 2 and the port of the receiving groove 11, facilitating the installation and removal of the reinforcing member 2.

[0057] Further, the reinforcing member 2 is in the shape of a cylinder, and a guide slope 22 is arranged on at least one end of the reinforcing member 2 along the axial direction thereof.

[0058] In some embodiments, the reinforcing member 2 is a cylindrical steel base, and the guiding slope 22 can be arranged at one end of the reinforcing member 2 along the axial direction of the reinforcing member 2, or arranged at both ends of the reinforcing member 2 along the axial direction of the reinforcing member 2.

[0059] In some embodiments, the reinforcing member 2 can be assembled on the valve assembly 10 at both ends along the axial direction of the reinforcing member 2, and the guiding slope 22 is arranged at both ends of the reinforcing member 2.

[0060] Of course, in other embodiments, the reinforcing member 2 can also be a square structure, and the shape of the accommodating groove 11 can be adapted to the shape of the reinforcing member 2.

[0061] As shown in FIG. 8, in an embodiment, along the axial direction of the reinforcing member 2, the reinforcing member 2 is a T-shaped structure in cross-section, the shape of the accommodating groove 11 is adapted to the shape of the reinforcing member 2, an external thread is arranged on the outer peripheral side wall of the reinforcing member 2, an internal thread is arranged in the accommodating groove 11, and the reinforcing member 2 is fixedly connected with the accommodating groove 11 through screwing.

[0062] It can be understood that the transverse part of the T-shaped reinforcing member 2 is limitingly connected with the valve core 1, and the external thread of the vertical part of the reinforcing member 2 is screwed with the internal thread of the accommodating groove 11, facilitating replacement of the reinforcing member 2.

[0063] As shown in FIG. 9, in an embodiment, the reinforcing member 2 is a prismatic structure or a cylindrical structure, the shape of the accommodating groove 11 is adapted to the shape of the reinforcing member 2, a lap joint part 24 is arranged on the upper end face of the reinforcing member 2, a lap joint groove for accommodating the lap joint part 24 is arranged above the accommodating groove 11, a plurality of sets of screw holes are oppositely arranged on the open periphery of the accommodating groove 11 and the lap joint part 24, the lap joint part 24 is arranged in the lap joint groove, and the reinforcing member 2 is connected with the valve core 1 through a plurality of bolts 4; and the peripheral side wall of the reinforcing member 2 is tightly arranged with the side wall of the accommodating groove 11.

[0064] It can be understood that the lap joint part 24 causes the reinforcing member 2 to be limitingly connected with the valve core 1, the reinforcing member 2 is connected with the valve core 1 through the plurality of bolts 4, the structure is simple, and the reinforcing member 2 is more convenient to disassemble and assemble, facilitating replacement of the reinforcing member 2.

[0065] Further, the peripheral side wall of the reinforcing member 2 is tightly arranged with the side wall of the accommodating groove 11. In this way, the assembly stability of the reinforcing member 2 and the valve core 1 is ensured.

[0066] As shown in Fig. 10, in an embodiment, the longitudinal section of the reinforcing member 2 is in the shape of a convex letter along the axial direction of the reinforcing member 2, the longitudinal section of the accommodating groove 11 is in the shape of a convex letter, the mounting opening of the reinforcing member 2 is formed on the side wall of the valve core 1, the first screw holes are formed on the top wall located on the side of the top opening of the accommodating groove 11, the second screw holes are formed on the upper end surface located on the side of the convex part of the reinforcing member 2, the second screw holes are arranged corresponding to the first screw holes, and the connecting member passes through the first screw holes and the second screw holes in sequence to connect and fix the reinforcing member 2 and the valve core 1. Specifically, the connecting member can be a bolt 4.

[0067] As shown in Figs. 11 and 12, in some embodiments, the clamping groove 23 extending along the axial direction of the clamping groove 23 is formed on the side wall of the reinforcing member 2, the clamping strip 114 matched with the clamping groove 23 is arranged on the inner side wall of the accommodating groove 11, the clamping strip 114 is embedded in the oppositely arranged clamping groove 23, and the reinforcing member 2 slides into the accommodating groove 11 along the clamping strip 114.

[0068] Further, the clamping groove 23 is also formed on the bottom wall of the reinforcing member 2, and the clamping strip 114 matched with the clamping groove 23 is arranged on the bottom wall of the accommodating groove 11.

[0069] It can be understood that the up-down and left-right movements of the reinforcing member 2 are limited by the cooperation of the clamping groove 23 and the clamping strip, so as to connect the reinforcing member 2 and the valve core 1.

[0070] In all the above embodiments, the through hole 21 extending along the axial direction of the reinforcing member 2 is arranged on the reinforcing member 2. It can be understood that the through hole 21 can ensure the flow of the fluid in the upper and lower parts of the valve core 1, and reduce the medium resistance of the valve core 1 during the opening and closing of the valve. In the embodiment, the through hole 21 is circular. Of course, in other embodiments, the through hole 21 can also have other shapes.

[0071] The number of the through holes 21 can be determined according to the actual situation. In all the above embodiments, the number of the through holes 21 is 2, and the two through holes 21 are arranged symmetrically with respect to the central axis of the reinforcing member 2. In addition, the two through holes 21 can be arranged in the length direction or the width direction of the reinforcing member 2, or can be arranged in the diagonal direction of the reinforcing member 2.

[0072] The electromagnetic valve is a component controlled by electromagnetism, and is mainly used for controlling the on-off of fluid. At present, in the normally open electromagnetic valve, the static iron core is arranged on the side of the moving iron core close to the valve port, and the top rod penetrating through the static iron core is connected to the moving iron core. When the electromagnetic valve is powered on, the moving iron core moves towards the static iron core, and the top rod moves. Since the top rod abuts against the valve core, the top rod can synchronously push the valve core to move, so as to close the valve port. When the electromagnetic valve is powered off, the valve core moves to be attached to the static iron core, so as to open the valve port.

[0073] However, since the electromagnetic valve is in normal operation, the spool and the static core are in close contact, and the close contact between the spool and the static core is more closely affected by the pressure of the refrigerant in the valve cavity where the spool is located. Therefore, when the electromagnetic valve is just powered on, the close contact force between the static core and the spool is large, which makes it difficult for the spool to separate from the static core, thereby greatly reducing the closing efficiency of the electromagnetic valve.

[0074] Referring to FIGS. 1-2 and FIGS. 13-14, the application further comprises an electromagnetic valve 200. The electromagnetic valve 200 comprises the valve assembly 100 described above.

[0075] Referring to FIG. 1, the core assembly 3 is installed in the valve cavity 501 and located on the side of the spool 1 away from the valve port 502 for driving the spool 1 to move. One or both of the end face of the core assembly 3 close to the spool 1 and the end face of the spool 1 close to the core assembly 3 is provided with a flow-through groove 301, and the flow-through groove 301 is in communication with the valve cavity 501.

[0076] It can be understood that the electromagnetic valve 200 is in an open state, and the core assembly 3 and the spool 1 are in close contact. The application can balance the pressure at the close contact between the spool 1 and the core assembly 3 through the flow-through groove 301, thereby reducing the close contact force generated when the two are in close contact. Therefore, when the core assembly 3 is powered on and drives the spool 1 to move, the driving difficulty of the spool 1 can be effectively reduced, and the response speed of the spool 1 can be improved, thereby greatly improving the closing efficiency of the electromagnetic valve 200.

[0077] In an embodiment, as shown in FIGS. 1 and 2, the core assembly 3 further comprises a moving core 31 and a static core 32, the static core 32 is limitingly connected to the valve body 5, and the moving core 31 is movably arranged on the side of the static core 32 away from the spool 1. One end of the top rod 33 is connected to the moving core 31, the other end penetrates the static core 32 and abuts against the spool 1, and with the movement of the moving core 31 towards the static core 32, the top rod 33 can push the spool 1 to move synchronously to close the valve port 502. The flow-through groove 301 is provided on the end face of the static core 32 close to the spool 1.

[0078] When the electromagnetic valve 200 is powered on, the static core 32 can generate an attractive force on the moving core 31, thereby driving the moving core 31 to move towards the static core 32. At this time, since the top rod 33 is connected to the moving core 31, the moving core 31 can drive the top rod 33 to move synchronously, so that the top rod 33 pushes the spool 1 to block the valve port 502, thereby achieving the closing of the electromagnetic valve 200.

[0079] Further, in an embodiment, the valve core 1 comprises an elastic support 13 and a sealing gasket 14, and the valve core 1 is provided with an assembly hole 101, the elastic support 13 and the sealing gasket 14 are both limitedly installed in the assembly hole 101, and one end of the elastic support 13 abuts against the bottom wall of the assembly hole 101 away from the valve port 502, and the other end is connected to and applies force to the sealing gasket 14. The flow channel 301 is provided on the end face of the valve core 1 close to the static core 32.

[0080] In this way, the force applied by the elastic support 13 to the sealing gasket 14 can ensure that the sealing gasket 14 realizes stable sealing of the valve port 502 when the electromagnetic valve 200 is closed, prevent the sealing performance of the sealing gasket 14 from being reduced due to wear or fatigue, and avoid leakage, thereby greatly improving the safety of the electromagnetic valve 200.

[0081] For the convenience of description, the application is specifically described by taking the flow channel 301 provided in the core iron assembly 3 as an example.

[0082] In an embodiment, as shown in FIG. 3, the number of flow channels 301 is multiple, and the multiple flow channels 301 are arranged at intervals along the circumference of the core iron assembly 3. In this way, the adhesion force generated when the valve core 1 and the core iron assembly 3 are attached can be further reduced, so as to improve the efficiency of the valve core 1 separating from the core iron assembly 3.

[0083] Specifically, four flow channels 301 are provided in the embodiment, and the four flow channels 301 are uniformly and interval distributed along the circumference of the core iron assembly 3. However, the number of flow channels 301 can also be set to two, three, five or more in other embodiments. In some embodiments, the flow channels 301 extend along the radial direction of the core iron assembly 3 for easy processing, and of course, the flow channels 301 can also be arranged at a certain angle with the radial direction of the core iron assembly 3.

[0084] Further, in an embodiment, the flow channel 301 is a cutting forming structure. In this way, the processing of the flow channel 301 is facilitated, and the processing difficulty can be reduced. The cross-sectional shape of the flow channel 301 can be set to a rectangle, a triangle or an arc, and can be reasonably set according to actual needs.

[0085] Of course, in other embodiments, the flow channel 301 can also be processed by stamping, casting and other processes.

[0086] In an embodiment, as shown in FIG. 2, the valve body 5 comprises a conduit 52, one end of the conduit 52 is inserted into the valve body 5 and connected with the valve body 5. The core iron assembly 3 is installed in the conduit 52. In this way, by setting the valve body 5 as a split structure, the installation difficulty of the core iron assembly 3 can be reduced.

[0087] Further, the static iron core 32 is protruded with a first step 321 at one end close to the valve core 1 in a direction away from the axis of the static iron core 32, and the inner wall of the valve body 5 is provided with a second step 51, and the one end of the first step 321 abuts against the second step 51 and the other end abuts against the end face of the guide pipe 52 in the axial direction of the static iron core 32. In this way, the static iron core 32 can be installed in a limited position.

[0088] In an embodiment, the outer wall of the guide pipe 52 is in interference fit with the inner wall of the valve body 5 to improve the connection strength between the guide pipe 52 and the valve body 5, and the interference ensures the coaxiality of the guide pipe 52 and the valve body 5 to achieve accurate positioning of the static iron core 32.

[0089] Further, in an embodiment, the static iron core 32 and the guide pipe 52 are welded by high-frequency welding. In this way, compared with laser welding, the welding cost between the static iron core 32 and the guide pipe 52 can be reduced.

[0090] In other embodiments, the static iron core 32 and the guide pipe 52 can also be welded by laser welding.

[0091] The electromagnetic valve 200 of the present application can be assembled by first installing the static iron core 32 into the valve body 5, then sleeving the guide pipe 52 on the outer periphery of the static iron core 32 and gradually press-fitting it into the valve body 5, so that the end of the guide pipe 52 is pressed against the first step 321 on the static iron core 32 and the second step 51 on the inner wall of the valve body 5. Then, the static iron core 32 and the guide pipe 52 are fixedly connected by high-frequency welding or the like. In this way, the static iron core 32, the valve body 5 and the guide pipe 52 are stably connected and positioned, and the production process is greatly simplified.

[0092] Since the core iron assembly 3 is installed in the guide pipe 52, to avoid the dynamic iron core 31 from being separated from the guide pipe 52 during movement, in an embodiment, as shown in FIG. 1, the electromagnetic valve 200 further includes a head 6 which is sealed at the end of the guide pipe 52 away from the valve core 1. In this way, the reliability and safety of the installation of the core iron assembly 3 can be greatly improved.

[0093] Further, in an embodiment, the core iron assembly 3 further includes a first elastic member 34, one end of which is connected to the head 6 and the other end is connected to the dynamic iron core 31. It can be understood that the first elastic member 34 is used for the movement and reset of the dynamic iron core 31. Specifically, when the electromagnetic valve 200 is powered on, the dynamic iron core 31 moves and causes the first elastic member 34 to deform, and when the electromagnetic valve 200 is powered off, the dynamic iron core 31 can move and reset under the elastic restoring force of the first elastic member 34 due to the disappearance of the attraction force between the static iron core 32 and the dynamic iron core 31, thereby canceling the abutting force of the jacking rod 33 on the valve core 1, and the valve core 1 can move and open the valve port 502 to achieve the opening of the electromagnetic valve 200.

[0094] In an embodiment, the valve core 1 further comprises a second elastic member 12, the second elastic member 12 is sleeved on the outer periphery of the valve core 1, and two ends of the second elastic member 12 are connected with the valve core 1 and the valve body 5 respectively. In this way, when the electromagnetic valve 200 is powered on, the second elastic member 12 can be compressed by force with the movement of the valve core 1, and when the electromagnetic valve 200 is powered off, the valve core 1 can move away from the valve port 502 under the elastic restoring force of the second elastic member 12, so as to realize the automatic opening of the electromagnetic valve 200, and the opening process of the electromagnetic valve 200 is simpler.

[0095] The application also provides an air conditioning system 300, which comprises the electromagnetic valve 200 of any one of the above embodiments.

[0096] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0097] The above embodiments only express several implementation manners of the application, the description is more specific and detailed, but it should not be understood as the limitation of the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A valve assembly, characterized by The valve body has a valve cavity and a valve port communicating with the valve cavity. The valve core component is movably arranged in the valve cavity and used for blocking or opening the valve port. The core assembly includes a top rod located on the side of the valve core component away from the valve port. The valve core component includes a valve core and a reinforcing member connected to the valve core on the side close to the top rod. The reinforcing member is abutted by the top rod to push the valve core to block the valve port.

2. The valve assembly of claim 1, wherein, The strength of the reinforcing member is greater than that of the valve core.

3. The valve assembly of claim 1, wherein, An accommodating groove extending to the inside of the valve core is formed on the valve core.

4. The valve assembly of claim 3, wherein, The reinforcing member is arranged in the accommodating groove and connected with the valve core. The reinforcing member is located directly below the top rod.

5. The valve assembly of claim 4, wherein, The top rod moves towards the valve core and abuts against the reinforcing member. The accommodating groove includes a first groove section and a second groove section connected in sequence towards the direction close to the top rod.

6. The valve assembly of claim 4, wherein, The inner diameter of the second groove section is greater than that of the first groove section.

7. The valve assembly of claim 1, wherein, The reinforcing member is interference fit with the first groove section and clearance fit with the second groove section.

8. The valve assembly of claim 1, wherein, A transition slope is arranged between the first groove section and the second groove section.

9. The valve assembly of claim 1, wherein, The inner side wall of the port of the accommodating groove close to the top rod is in the shape of an inverted cone. The reinforcing member is in the shape of a cylinder. At least one end of the reinforcing member along its own axial direction is provided with a guide slope. The cross-sectional shape of the reinforcing member along its axial direction is in the shape of a T. The outer periphery side wall of the reinforcing member is provided with external threads. The accommodating groove is provided with internal threads. The reinforcing member is fixed with the accommodating groove through screw connection. The reinforcing member is in the shape of a prism or a cylinder. The accommodating groove is in the shape matching the reinforcing member. A plurality of screw holes are arranged on the four side walls of the accommodating groove and the overlapping part. The overlapping part is arranged in the overlapping groove. The reinforcing member is connected with the valve core through a plurality of bolts. The reinforcing member is in close contact with the side wall of the accommodating groove. The longitudinal cross-section of the reinforcing member along its axial direction is in the shape of a convex letter. The side wall of the valve core is provided with a reinforcing member mounting port. A plurality of first screw holes are arranged on the top wall of the valve core on the side wall of the top opening of the accommodating groove. A plurality of second screw holes are arranged on the upper end face of the convex part of the reinforcing member. The second screw holes correspond to the first screw holes. A connecting member passes through the first screw holes and the second screw holes in sequence to connect and fix the reinforcing member with the valve core. A plurality of clamping grooves are arranged on the four side walls of the reinforcing member along its own axial direction. A plurality of clamping strips matching the clamping grooves are arranged on the circumferential inner side wall of the accommodating groove. The clamping strips are embedded in the oppositely arranged clamping grooves. The reinforcing member slides into the accommodating groove along the clamping strips.

10. The valve assembly of any one of claims 1-9, wherein, A plurality of through holes extending in the axial direction of the reinforcing member are provided in the reinforcing member.

11. An electromagnetic valve characterized by comprising: The valve assembly of any one of claims 1-10, wherein the core assembly is installed in the valve cavity, and a flow passage is formed in one or both of an end face of the core assembly near one end of the spool and an end face of the spool near the core assembly, the flow passage being in communication with the valve cavity.

12. The electromagnetic valve according to claim 11, wherein The flow passage is a plurality of flow passages, and the plurality of flow passages are arranged in a circumferential direction of the core assembly.

13. The electromagnetic valve according to claim 11, wherein The core assembly further comprises a moving core and a stationary core, the stationary core being limitingly connected to the valve body, and the moving core being movably arranged on a side of the stationary core away from the spool. One end of the top rod is connected to the moving core, the other end of the top rod is arranged through the stationary core and abuts against the spool, and the top rod can push the spool to move synchronously to close the valve port as the moving core moves towards the stationary core. The flow passage is formed in an end face of the stationary core near the spool.

14. The electromagnetic valve according to claim 13, wherein The valve body comprises a guide pipe, one end of the guide pipe is inserted into the valve body and connected to the valve body. The end of the stationary core near the spool protrudes in a direction away from the axis of the stationary core to form a first step, and an inner wall of the valve body is provided with a second step, one end of the first step abuts against the second step in the axial direction of the stationary core, and the other end of the first step abuts against an end face of the guide pipe.

15. An air conditioning system, characterised in that, The electromagnetic valve of any one of claims 11-14.

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