CN219432584U - Electromagnetic electronic expansion valve - Google Patents
Electromagnetic electronic expansion valve Download PDFInfo
- Publication number
- CN219432584U CN219432584U CN202320187056.7U CN202320187056U CN219432584U CN 219432584 U CN219432584 U CN 219432584U CN 202320187056 U CN202320187056 U CN 202320187056U CN 219432584 U CN219432584 U CN 219432584U
- Authority
- CN
- China
- Prior art keywords
- protrusion
- armature
- electromagnetic
- groove
- expansion valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model provides an electromagnetic electronic expansion valve, comprising: the electromagnetic coil, the iron core, the resetting device, the armature and the valve body; a first groove and a second groove are formed in the surface of the iron core opposite to the armature; the surface of the armature opposite to the iron core is provided with a first bulge and a second bulge respectively. The first protrusion can be movably embedded into the first groove, and the second protrusion can be movably embedded into the second groove along with the up-and-down movement of the armature. According to the magnetic induction line between the armature and the iron core is distributed along the radial direction more when the armature moves upwards, so that the axial electromagnetic force received by the armature is reduced, the radial electromagnetic force is increased, the spring force is gradually increased along with the upward movement of the armature, the upward movement speed of the armature is reduced, and the noise of the armature striking the iron core is reduced.
Description
Technical Field
The utility model relates to the technical field of expansion valves, in particular to an electromagnetic electronic expansion valve.
Background
Expansion valves are key components in automotive thermal management systems, and one of the most basic refrigeration cycles consists of 4 main components, as shown in fig. 1, which are: a compressor, an evaporator, an expansion valve, and a condenser. The refrigerant in the refrigeration cycle pipeline is compressed by the compressor and then becomes a high-temperature high-pressure liquid phase state, the temperature is reduced after heat is released by condensation through the condenser, a throttling effect is generated when the refrigerant with middle temperature and high pressure passes through the throttle hole of the expansion valve, the pressure and the temperature are suddenly reduced due to the sudden volume increase after the refrigerant passes through the throttle hole, the refrigerant is converted into a low-temperature low-pressure gaseous state or a gas-liquid two-phase state, and then the heat in the surrounding environment is absorbed in the evaporator to achieve the refrigeration cooling effect.
With the vigorous development of new energy vehicles, especially pure electric vehicles, the automobile thermal management system involves other key components such as a battery module and an electric control system of the new energy vehicle, which are expanded from an engine and a passenger cabin to a thermal management object, and the traditional thermal expansion valve can not meet the requirement of the new energy vehicle on the accurate control of the thermal management system. The electromagnetic electronic expansion valve achieves the throttling expansion effect by controlling the opening and closing of the valve port through PWM waves, and has the advantages of high control precision, high response speed, good sealing performance and the like.
The structure of a typical electromagnetic electronic expansion valve is shown in fig. 2, and mainly comprises electromagnetic coils, iron cores, return springs, armatures, valve seats and other parts. The coil PIN needle receives a voltage signal from the controller, the electromagnetic coil is electrified to generate a magnetic field, the armature iron positioned in the magnetic field of the electromagnetic coil is driven by electromagnetic force to move upwards, the valve port is opened, and the refrigerant passes through the orifice of the valve seat; when the electromagnetic coil is powered off, the magnetic field disappears, and the armature moves downwards to close the valve port under the action of the return spring. The switch of the electromagnetic electronic expansion valve is controlled by PWM waves, and the refrigerating capacity of the valve port is regulated by pulse width modulation. Typical electromagnetic electronic expansion valves are currently mainly used in thermal management systems for commercial vehicles such as buses, trucks, refrigerated transport vehicles, and the like, because such vehicles have large cabins and heat dissipation spaces, and the requirements for the response speed and system noise of the thermal management systems are relatively low.
However, new energy passenger vehicles (including pure electric vehicles, plug-in hybrid vehicles, range-extending vehicles, etc.) have higher requirements on the control accuracy and dynamic response speed of the thermal management system, and rapid switching (the working cycles of cooling, heating, dehumidifying, etc. of different vehicle areas such as a battery/motor/electric controller/engine/passenger compartment, etc.) between different circulation modes is required. Therefore, the response speed of the system needs to be improved, the response time of the armature needs to be reduced, under the condition that the motion stroke of the armature is fixed, the armature needs to be quickly moved upwards by larger electromagnetic force after being electrified, and the electromagnetic force is larger as the armature is closer to the iron core, so that the energy of the armature striking the iron core is increased, the collision noise is obviously improved, and customer noise complaints are easily caused.
At present, in order to reduce collision noise, common schemes are as follows:
scheme 1: noise reduction foam material is wrapped outside the whole electromagnetic coil to block noise transmission. However, in scheme 1, noise transmission is reduced from noise transmission, noise cannot be reduced from the root, and noise reduction materials are wrapped, so that heat generated by the electromagnetic coil is not easily transmitted to air, and the temperature of a copper wire of the electromagnetic coil is increased, so that thermal breakdown failure of the copper wire is likely to be caused.
Scheme 2: the collision noise level is improved by reducing the armature movement stroke, i.e. the valve port opening of the expansion valve, and by reducing the armature speed at the moment of impact. In the scheme 2, noise is improved to some extent, but the flow area of the valve port is reduced, so that the flow rate of the refrigerant is reduced, and the refrigerating effect is reduced.
Disclosure of Invention
The utility model aims to provide an electromagnetic electronic expansion valve, which is used for solving the problem that the electromagnetic electronic expansion valve is loud in noise after being electrified.
In order to solve the above technical problems, the present utility model provides an electromagnetic electronic expansion valve, including: the electromagnetic coil is sleeved on the upper end of the armature and the iron core, and the lower end of the armature is arranged in the valve body;
the surface of the iron core opposite to the armature is provided with a first groove and a second groove which are distributed at intervals; the surface of the armature opposite to the iron core is respectively provided with a first bulge matched with the first groove and a second bulge matched with the second groove; the resetting device is arranged in the first groove;
when the electromagnetic coil is electrified to generate a magnetic field, the armature moves upwards, the first protrusion is embedded into the first groove, and the second protrusion is embedded into the second groove; when the electromagnetic coil is powered off, the armature moves downward, and the first protrusion is separated from the first groove, and the second protrusion is separated from the second groove.
Optionally, in the electromagnetic electronic expansion valve, the second protrusion is an annular protrusion, a fan-shaped protrusion, or a strip-shaped protrusion.
Optionally, in the electromagnetic electronic expansion valve, the side surface of the first protrusion and the side surface of the second protrusion are any one of a vertical plane, an inclined plane and an inclined cambered surface.
Optionally, in the electromagnetic electronic expansion valve, when the side surface of the first protrusion is an inclined cambered surface, an included angle between a tangent line of any point on the side surface of the first protrusion and an axis of a central shaft of the electromagnetic coil is greater than or equal to 0 ° and less than 90 °.
Optionally, in the electromagnetic electronic expansion valve, the first protrusion on the armature includes: and n sub-protrusions which are coaxially stacked in sequence, wherein the transverse dimension of each sub-protrusion gradually increases from top to bottom, and n is an integer greater than or equal to 2.
Optionally, in the electromagnetic electronic expansion valve, a side surface of each sub-protrusion is any one of a vertical plane, an inclined plane, and an inclined cambered surface.
Optionally, in the electromagnetic electronic expansion valve, when the side surfaces of the sub-protrusions are all inclined planes, an included angle between the side surfaces of the sub-protrusions and the vertical direction is gradually increased from top to bottom.
Optionally, in the electromagnetic electronic expansion valve, when the side surfaces of the sub-protrusions are all inclined cambered surfaces, an included angle between a tangent line of any point on the side surface of each sub-protrusion and an axis of a central shaft of the electromagnetic coil is gradually increased from top to bottom.
Optionally, in the electromagnetic electronic expansion valve, a height of the first protrusion is equal to a height of the second protrusion.
Optionally, in the electromagnetic electronic expansion valve, a height of the first protrusion is smaller than a depth of the first groove; the height of the second protrusion is smaller than the depth of the second groove.
The technical scheme of the application at least comprises the following advantages:
according to the magnetic induction line between the armature and the iron core is changed from more axial distribution to more radial distribution when the armature moves upwards, so that the axial electromagnetic force received by the armature is smaller and smaller, the radial electromagnetic force is larger and larger, the spring force is gradually increased along with the upward movement of the armature, the upward movement speed of the armature is reduced, the effect of reducing the noise of the armature striking the iron core is achieved, the longer service life of parts is also ensured due to smaller striking, and the risks of moving piece clamping stagnation and the like caused by particle stripping caused by striking of the system are reduced. In addition, the larger valve port lift can be realized by the larger electromagnetic force at the moment of powering on and opening the valve, so that the flow area of the electromagnetic electronic expansion valve is increased, and the refrigerating capacity of the system is increased.
Further, according to the method, the first bulge and/or the second bulge are/is arranged to be the cambered surface, and the cambered surface is shaped so that the radius direction of curvature of the first bulge and/or the second bulge is more along the radial direction of the armature, so that the effects of reducing the electromagnetic force of the armature along the axial direction and increasing the electromagnetic force of the armature along the radial direction in the upward movement process of the armature are achieved, the impact of the armature and the iron core is slowed down, and the noise of the armature impacting the iron core is further reduced.
In addition, the first bulge can be formed by n sub-bulges which are sequentially and coaxially stacked, and the side surfaces of the sub-bulges are arranged to be arc surfaces, so that the effects of reducing the electromagnetic force of the armature along the axial direction and increasing the electromagnetic force of the armature along the radial direction in the moving process of the armature are realized, the impact of the armature and the iron core is slowed down, and the noise of the armature impacting the iron core is further reduced.
Drawings
FIG. 1 is a schematic block diagram of a basic refrigeration cycle;
FIG. 2 is a schematic structural view of a typical electromagnetic electronic expansion valve;
FIG. 3 is a schematic structural view of an electromagnetic electronic expansion valve according to an embodiment of the present utility model;
fig. 4 (a) -4 (c) are schematic diagrams of three armature cross-sections opposite the core in accordance with embodiments of the utility model;
fig. 5 is a schematic diagram of the trend of the electromagnetic force, the return spring force and the upward displacement of the armature in the upward process of the armature according to the embodiment of the utility model;
fig. 6 (a) -6 (c) are schematic diagrams of magnetic induction line distribution during upward movement of the armature in which the sides of the first protrusion and the sides of the second protrusion are vertical planes according to an embodiment of the utility model;
fig. 7 is a schematic structural view of an armature with a vertical plane on the core and the sides of the first and second protrusions according to an embodiment of the present utility model;
fig. 8 is a schematic structural diagram of an armature with concave cambered surfaces on the side surface of a first protrusion and the side surface of a second protrusion according to an embodiment of the utility model;
fig. 9 is a schematic structural view of an armature in which a first protrusion of an embodiment of the utility model includes two sub-protrusions;
wherein reference numerals are as follows:
11-solenoid, 12-core, 13-reset device, 14-armature, 15-valve body, 16-valve seat, 18-fluid inlet, 19-fluid outlet, 20-swivel port, 21-valve cavity, 22-orifice, 23-first groove, 24-second groove, 25-first protrusion, 251-first sub-protrusion, 252-second sub-protrusion, 26-second protrusion, 27-valve port.
Detailed Description
The electromagnetic electronic expansion valve provided by the utility model is further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present utility model will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model. Furthermore, the structures shown in the drawings are often part of actual structures. In particular, the drawings are shown with different emphasis instead being placed upon illustrating the various embodiments.
An embodiment of the present application provides an electromagnetic electronic expansion valve, referring to fig. 3, fig. 3 is a schematic structural diagram of the electromagnetic electronic expansion valve according to an embodiment of the present utility model, where the electromagnetic electronic expansion valve includes: a solenoid 11, an iron core 12, a resetting device 13, an armature 14 and a valve body 15; the armature 14 is disposed opposite the core 12; the valve body 15 is connected with the electromagnetic coil 11, the electromagnetic coil 11 is sleeved on the upper end of the armature 14 and the iron core 12, and the lower end of the armature 14 is arranged in the valve body 15. Further, a first groove 23 and a second groove 24 are arranged on the surface of the iron core 12 opposite to the armature 14 at intervals, and the resetting device 13 is arranged in the first groove 23; the surface of the armature 14 opposite to the core 12 is provided with a first protrusion 25 matching the first recess 23 and a second protrusion 26 matching the second recess 24, respectively.
In the application, by arranging the first groove 23 and the second groove 24 on the surface of the iron core 12 opposite to the iron core 14, and arranging the first protrusion 25 matched with the first groove 23 and the second protrusion 26 matched with the second groove 24 on the surface of the iron core 14 opposite to the iron core 12, when the iron core 14 moves upwards, magnetic induction lines between the iron core 12 and the iron core 14 are changed from more axial distribution to more radial distribution, so that the axial electromagnetic force borne by the iron core 14 is smaller and the radial electromagnetic force is larger, the spring force is gradually increased along with the upward movement of the iron core, the upward movement speed of the iron core is reduced, the effect of reducing the noise of the iron core 12 impacted by the iron core 14 is realized, the longer service life of parts is ensured by smaller impact, and the risks of moving part blocking caused by particle stripping due to impact of the system are reduced. In addition, the larger valve port lift can be realized by the larger electromagnetic force at the moment of powering on and opening the valve, so that the flow area of the electromagnetic electronic expansion valve is increased, and the refrigerating capacity of the system is increased.
In this embodiment, the return means 13 may be a spring.
Optionally, the electromagnetic electronic expansion valve may further include: the electromagnetic coil is arranged in the coil cover body. The coil housing may be a metal material. The coil housing is sleeved on the upper end of the armature 14 and the iron core 12.
In this embodiment, the first protrusion 25 is a cylindrical protrusion, the first groove 23 is matched with the first protrusion 25, and the first groove 23 is a cylindrical groove, so that the first protrusion 25 (cylindrical protrusion) can be inserted into the first groove 23 (cylindrical groove).
Further, referring to fig. 4 (a) -4 (c), fig. 4 (a) -4 (c) are schematic views of three armature cross-sections opposite to the core according to the embodiment of the present utility model, and the second protrusion 26 may be an annular protrusion, a fan-shaped protrusion, or a strip-shaped protrusion. Accordingly, the second groove 24 is matched with the second protrusion 26, and the second groove 24 may be an annular groove, a fan-shaped groove, or a stripe-shaped groove. The embodiment of the present application needs to ensure that the shape and position of the second protrusion 26 exactly matches the shape and position of the second groove 24, so that the second protrusion 26 can be embedded in the second groove 24.
Wherein, as shown in fig. 4 (a), the second protrusion 26 is an annular protrusion, and the second protrusion 26 is disposed around the first protrusion 25. The number of the second protrusions 26 is not limited in this application, and fig. 4 (a) illustrates a case where two annular protrusions (second protrusions 26) are disposed around the first protrusion 25.
Further, as shown in fig. 4 (b), the second protrusions 26 are fan-shaped protrusions, and the fan-shaped protrusions of the second protrusions 26 may also be referred to as arc-shaped protrusions, and a plurality of the second protrusions 26 are disposed at both sides of the first protrusions 25.
Further, as shown in fig. 4 (c), the second protrusions 26 are stripe-shaped protrusions, and a plurality of the second protrusions 26 are disposed on both sides of the first protrusion 25.
When the second protrusions 26 are fan-shaped protrusions or stripe-shaped protrusions, the number of the second protrusions 26 on both sides of the first protrusions 25 may be different, for example, two second protrusions 26 are disposed at intervals on the left side of the first protrusions 25, and three second protrusions 26 are disposed at intervals on the right side of the first protrusions 25.
Preferably, when the second protrusions 26 are fan-shaped protrusions or bar-shaped protrusions, the number of the second protrusions 26 may be a multiple of 2. When the number of the second protrusions 26 is two, the two second protrusions 26 are respectively disposed on one side of the first protrusion 25, as shown in fig. 4 (b) and 4 (c), and when the second protrusions 26 are fan-shaped protrusions or strip-shaped protrusions, the two first protrusions 25 and the second protrusions 26 form a mountain-shaped structure.
Preferably, the height of the first protrusion 25 is equal to the height of the second protrusion 26.
In this embodiment, the height of the first protrusion 25 is smaller than the depth of the first groove 23.
Further, the side surface of the first protrusion 25 and the side surface of the second protrusion 26 adjacent to the first protrusion 25 are any one of a vertical plane, an inclined plane, and an inclined cambered surface. When the side surface of the first protrusion 25 and/or the side surface of the second protrusion 26 are inclined cambered surfaces, the side surface of the first protrusion 25 and/or the side surface of the second protrusion 26 may be concave cambered surfaces or convex cambered surfaces.
Preferably, the electromagnetic electronic expansion valve may further include: a valve seat 16, the valve seat 16 is arranged in the valve cavity 21 and is positioned at the bottom of the armature 14, and a throttle hole 22 is arranged on the surface of the valve seat 16 contacted with the armature 14.
In this embodiment, the valve body 15 is provided with a fluid inlet 18, a fluid outlet 19 and an adapter 20, and the valve body 15 is provided with a valve cavity 21; the lower end of the armature 14 is disposed in the valve chamber 21 through the adapter 20.
Further, a surface of the armature 14 contacting the valve seat 16 is provided with a valve port 27.
The working principle of the electromagnetic electronic expansion valve is as follows: when the electromagnetic coil 11 is energized to generate a magnetic field, the armature 14 moves upwards to open the valve port 27, and the refrigerant enters from the fluid inlet 18, passes through the valve cavity 21, flows through the orifice 22 on the valve seat 16, and flows out from the fluid outlet 19, at this time, the first protrusion 25 on the armature 14 is embedded in the first groove 23 on the iron core 12, and the second protrusion 26 on the armature 14 is embedded in the second groove 24 on the iron core 12; when the solenoid 11 is de-energized, the magnetic field is removed and the armature 14 moves downward to close the valve port 27 and thereby also the orifice 22, at which time the first protrusion 25 on the armature 14 separates from the first recess 23 on the core 12 and the second protrusion 26 on the armature 14 separates from the second recess 24 on the core 12.
Referring to fig. 5, fig. 6 (a) -fig. 6 (c), fig. 5 is a schematic diagram of the trend of the electromagnetic force, the return spring force and the upward displacement of the armature in the upward movement of the armature in the embodiment of the utility model, and fig. 6 (a) -fig. 6 (c) are schematic diagrams of the distribution of magnetic induction lines in the upward movement of the armature in which the side surfaces of the first protrusion and the side surfaces of the second protrusion are vertical planes, and at the moment of energizing, the magnetic induction lines between the armature 14 and the iron core 12 are more oriented in the axial direction, so that the electromagnetic force component along the axial direction is larger. Further, as the armature 14 moves toward the core 12, the armature 14 and core 12 overlap regionThe longer and longer magnetic induction lines between the armature 14 and the iron core 12 are more oriented to the radial direction of the iron core 12, so that the electromagnetic force component in the axial movement direction of the armature 14 is obviously reduced, the axial electromagnetic force of the armature is smaller and the radial electromagnetic force is larger and smaller; at this time, as the armature moves upward, the spring force gradually increases, but the first protrusion 25 on the armature 14 and the second protrusion 26 on the armature 14 are closer to the core 12, reducing the magnetic resistance in the magnetic circuit, so that the electromagnetic force F applied to the armature 14 can be increased m1 The upward movement of the armature 14 is ensured against the spring force, and the upward movement speed of the armature is reduced due to the smaller and smaller axial electromagnetic force applied to the armature, thereby reducing the noise of the armature striking the core.
Preferably, the height H1 of the second protrusion 26 is smaller than the depth H2 of the second groove 24. Referring to fig. 7 in combination with fig. 6 (a) -6 (c), fig. 7 is a schematic structural view of an armature in which the side of the first protrusion and the side of the second protrusion are vertical planes, and when the armature 14 moves into contact with the core 12, since the magnetic induction lines almost pass through the protrusion structure between the first groove 23 and the second groove 24 of the core 12, the magnetic resistance formula is: rm=L/(u 0. S), (where Rm is magnetic resistance, L is magnetic path length, u0 is magnetic permeability of magnetic conductive material, S is magnetic path area), it is known that the smaller the magnetic path area S is, the larger the magnetic resistance Rm is when the magnetic path length L is longer, so that the second protrusion 26 on the armature 14 is magnetically saturated, and the axial electromagnetic force applied to the armature 14 is smaller at this position, so that the axial electromagnetic force applied to the armature 14 is smaller in the whole armature 14 lift range, and the electromagnetic force F applied to the armature 14 is s1 When compared with the electromagnetic force in the traditional electronic expansion valve, the electromagnetic force is larger, and the armature 14 moves upwards, the spring force F s1 The spring force is significantly reduced compared with a conventional electronic expansion valve, so that the upward moving speed of the armature 14 can be reduced, and the effect of reducing the noise of the armature 14 striking the iron core 12 is realized.
In this embodiment, referring to fig. 8, fig. 8 is a schematic structural diagram of an armature in which both a side surface of a first protrusion and a side surface of a second protrusion are concave cambered surfaces, and when the side surface of the first protrusion 25 is the concave cambered surface, an included angle α between a tangent line of any point on the side surface of the first protrusion 25 and an axis (axial direction) of a central shaft of the electromagnetic coil 11 is greater than or equal to 0 ° and less than 90 °.
In the application, by arranging the first protrusion 25 and/or the second protrusion 26 to be an arc surface, the arc surface shape enables the radius of curvature of the first protrusion 25 and/or the second protrusion 26 to be more along the radial direction of the armature 14, so that the effects of reducing the electromagnetic force of the armature 14 along the axial direction and increasing the electromagnetic force of the armature along the radial direction in the upward moving process of the armature 14 are achieved, the impact between the armature 14 and the iron core 12 is slowed down, and the noise of the armature 14 impacting the iron core 12 is further reduced.
Further, the first protrusion 25 on the armature 14 may include: and n sub-protrusions which are coaxially stacked in sequence, wherein the transverse dimension of each sub-protrusion gradually increases from top to bottom, and n is an integer greater than or equal to 2. Preferably, the side surface of each sub-protrusion is any one of a vertical plane, an inclined plane and an inclined cambered surface. Wherein, the inclined cambered surface can include: concave cambered surface and convex cambered surface.
When the side surfaces of the sub-protrusions are all inclined planes, the included angle between the side surfaces of the sub-protrusions and the vertical direction is gradually increased from top to bottom. Referring to fig. 9, fig. 9 is a schematic structural view of an armature in which a first protrusion includes two sub-protrusions, and fig. 9 illustrates that the first protrusion 25 on the armature 14 includes: the first sub-projection 251 and the second sub-projection 252 are coaxially stacked in order. The side surfaces of the first sub-protrusion 251 and the side surfaces of the second sub-protrusion 252 are inclined planes, and an included angle beta 2 between the side surfaces of the first sub-protrusion 251 and the vertical direction (axial direction) is smaller than an included angle beta 1 between the side surfaces of the second sub-protrusion 252 and the vertical direction (axial direction).
Further, when the side surfaces of the sub-protrusions are all inclined cambered surfaces, the included angle between the tangent line of any point on the side surface of each sub-protrusion and the axis of the central shaft of the electromagnetic coil is gradually increased from top to bottom.
In the present application, the first protrusion 25 is configured by n sub-protrusions stacked coaxially in sequence, and the side surfaces of the sub-protrusions are configured as arc surfaces, so that the effects of reducing the electromagnetic force of the armature 14 along the axial direction and increasing the electromagnetic force of the armature along the radial direction in the moving process of the armature 14 are achieved, and the impact between the armature 14 and the iron core 12 is slowed down, so that the noise of the armature 14 impacting the iron core 12 is further reduced.
Alternatively, the core 12 may extend outside the electromagnetic coil 11, and the top of the core 12 extending outside the electromagnetic coil 11 may be threaded.
Further, the electromagnetic electronic expansion valve may further include: and a fixing assembly which can press-fit the electromagnetic coil 11 and the iron core 12 together by being screw-fitted with the top of the iron core 12. Preferably, the fixing assembly includes: the gasket is sleeved on the iron core 12, and the nut is screwed down through the threaded fit at the top of the iron core 12 so as to press-fit the electromagnetic coil 11 and the iron core 12 together. The fixed connection (press-fit) between the iron core 12 and the electromagnetic coil 11 is not limited in this application, and may be any conventional fixed connection (press-fit).
The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (10)
1. An electromagnetic electronic expansion valve, comprising: the electromagnetic coil is sleeved on the upper end of the armature and the iron core, and the lower end of the armature is arranged in the valve body;
the surface of the iron core opposite to the armature is provided with a first groove and a second groove which are distributed at intervals; the surface of the armature opposite to the iron core is respectively provided with a first bulge matched with the first groove and a second bulge matched with the second groove; the resetting device is arranged in the first groove;
when the electromagnetic coil is electrified to generate a magnetic field, the armature moves upwards, the first protrusion is embedded into the first groove, and the second protrusion is embedded into the second groove; when the electromagnetic coil is powered off, the armature moves downward, and the first protrusion is separated from the first groove, and the second protrusion is separated from the second groove.
2. The electromagnetic electronic expansion valve of claim 1, wherein said second protrusion is an annular protrusion, a fan-shaped protrusion, or a strip-shaped protrusion.
3. The electromagnetic electronic expansion valve of claim 1, wherein the side surface of the first protrusion and the side surface of the second protrusion are any one of a vertical plane, an inclined plane, and an inclined cambered surface.
4. The electromagnetic expansion valve according to claim 3, wherein when the side surface of the first projection is an inclined arc surface, an angle between a tangent line of any point on the side surface of the first projection and an axis of a central axis of the electromagnetic coil is 0 ° or more and less than 90 °.
5. The electromagnetic electronic expansion valve of claim 1, wherein said first protrusion on said armature comprises: and n sub-protrusions which are coaxially stacked in sequence, wherein the transverse dimension of each sub-protrusion gradually increases from top to bottom, and n is an integer greater than or equal to 2.
6. The electromagnetic expansion valve according to claim 5, wherein the side surface of each sub-projection is any one of a vertical plane, an inclined plane, and an inclined arc surface.
7. The electromagnetic expansion valve of claim 6, wherein when the side surfaces of each of the sub-protrusions are inclined planes, an angle between the side surfaces of each of the sub-protrusions and the vertical direction increases gradually from top to bottom.
8. The electromagnetic expansion valve according to claim 6, wherein when the side surfaces of each of the sub-protrusions are inclined cambered surfaces, an angle between a tangent line of any point on the side surface of each of the sub-protrusions and an axis of a central axis of the electromagnetic coil gradually increases from top to bottom.
9. The electromagnetic electronic expansion valve of claim 1, wherein a height of said first protrusion is equal to a height of said second protrusion.
10. The electromagnetic electronic expansion valve of any of claims 1-9, wherein a height of said first protrusion is less than a depth of said first recess; the height of the second protrusion is smaller than the depth of the second groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320187056.7U CN219432584U (en) | 2023-02-07 | 2023-02-07 | Electromagnetic electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320187056.7U CN219432584U (en) | 2023-02-07 | 2023-02-07 | Electromagnetic electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219432584U true CN219432584U (en) | 2023-07-28 |
Family
ID=87344011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320187056.7U Active CN219432584U (en) | 2023-02-07 | 2023-02-07 | Electromagnetic electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219432584U (en) |
-
2023
- 2023-02-07 CN CN202320187056.7U patent/CN219432584U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104728483B (en) | A kind of flow control valve and its control method and refrigeration system | |
| KR102186053B1 (en) | Device for regulating a flow through and distributing a fluid in a fluid circuit | |
| KR20130035982A (en) | Control valve | |
| US7637115B2 (en) | Expansion device for an air conditioning system | |
| EP3453992A1 (en) | Heat pump air-conditioning system and electric vehicle | |
| US6182457B1 (en) | Electronic variable orifice tube and system for use therewith | |
| CN219432584U (en) | Electromagnetic electronic expansion valve | |
| CN108248331B (en) | Heat pump air conditioning system and electric automobile | |
| CN105840872B (en) | A kind of six-way valve and air conditioner of the switching of refrigeration dual system | |
| CN108116186B (en) | Automobile heat management system and electric automobile | |
| KR100310032B1 (en) | Air conditioner with non-condenser | |
| CN220523318U (en) | Valve port sealing device and electronic expansion valve | |
| CN111219533B (en) | Thermal expansion valve and automobile air conditioning system | |
| CN102607219A (en) | Electromagnetic expansion valve | |
| JPH11316068A (en) | Expansion valve | |
| CN220338749U (en) | Valve head armature assembly and electronic expansion valve | |
| CN116164154A (en) | Electromagnetic electronic expansion valve, thermal management system and vehicle | |
| CN111365911B (en) | Expansion valve and automobile air conditioning system | |
| CN219827888U (en) | Digital expansion valve | |
| CN109425158B (en) | Control method and control system | |
| JP5866599B2 (en) | solenoid valve | |
| CN108116187B (en) | Automobile heat management system and electric automobile | |
| CN219282554U (en) | Solenoid valve, refrigeration plant and car | |
| JPH11304298A (en) | Expansion valve with solenoid valve | |
| CN219827810U (en) | Electromagnetic opposite cut-off reversing valve for ice maker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |