CN115614505A - High-speed electromagnetic valve - Google Patents

Abstract

The invention relates to a high-speed electromagnetic valve which comprises a yoke iron, a coil, a valve body and a valve core, wherein the yoke iron is provided with an annular groove, the coil is arranged in the annular groove, extends in a closed manner along the extension direction of the annular groove and is suitable for generating a magnetic field; the valve body is arranged in a notch of the annular groove, the valve core is assembled on the valve body in a sliding mode, the valve body is provided with a first hole, a second hole and a third hole, the valve core slides towards the yoke iron when the coil is electrified so that the first hole is communicated with the second hole, and the valve core slides away from the yoke iron when the coil is powered off so that the second hole is communicated with the third hole. The high-speed electromagnetic valve has the advantage of high response speed.

Description

High-speed electromagnetic valve

Technical Field

The invention relates to the technical field of fluid valves, in particular to a high-speed electromagnetic valve.

Background

The electromagnetic valve adopts the electromagnet assembly to drive the valve core to move in the valve body, so that the communication of different valve ports of the valve body is realized, fluid is controlled to flow between the different valve ports, and the response speed of the electromagnetic valve in the related technology is low.

Disclosure of Invention

The present invention is based on the discovery and recognition by the inventors of the following facts and problems:

in the solenoid valve in the related art, the solenoid electromagnet is adopted to drive the valve core to move, and the cylindrical spiral spring is adopted to drive the valve core to reset, so that the acting force on the valve core is smaller while the occupied space is larger, and the response speed of the valve core is reduced;

the coil of the solenoid valve in the related art generates a magnetic field, and the solenoid valve is driven to move after the yoke iron collects a magnetic induction line, but the solenoid valve in the related art has large magnetic loss, so that the driving acting force on the valve core is small, and the response speed of the valve core is low.

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, embodiments of the present invention propose a high-speed solenoid valve having an advantage of high response speed.

The high-speed electromagnetic valve comprises a yoke iron and a coil, wherein the yoke iron is provided with an annular groove, and the coil is arranged in the annular groove, extends in a closed manner along the extending direction of the annular groove and is suitable for generating a magnetic field; the valve body is arranged in a notch of the annular groove, the valve core is assembled on the valve body in a sliding mode, the valve body is provided with a first hole, a second hole and a third hole, the valve core slides towards the yoke iron when the coil is electrified so that the first hole is communicated with the second hole, and the valve core slides away from the yoke iron when the coil is powered off so that the second hole is communicated with the third hole.

The high-speed electromagnetic valve has the advantage of high response speed.

In some embodiments, the high-speed solenoid valve includes an armature disposed in the notch of the annular groove and spaced apart from the yoke, the armature engaging the notch of the annular groove to slide the valve element toward the yoke when the coil is energized, and an elastic member disposed between the armature and the yoke and adapted to reset the armature and slide the valve element away from the yoke when the coil is de-energized.

In some embodiments, the high-speed solenoid valve includes a baffle plate disposed in an annular groove to isolate the coil from a notch of the annular groove, and at least a portion of the elastic member is disposed in the annular groove and abuts against the baffle plate.

In some embodiments, the armature is provided with a mounting groove, at least part of the elastic piece is matched in the mounting groove, and the other end of the elastic piece is abutted against the groove bottom of the mounting groove.

In some embodiments, the yoke has a central portion, the annular groove extends along an outer peripheral side of the central portion in a closed manner, the elastic member is a wave spring, and a part of the elastic member is fitted on the outer peripheral side of the central portion.

In some embodiments, the high-speed solenoid valve includes a push rod, the push rod is guided to be slidably engaged with the valve body, the push rod is disposed between the armature and the valve core, and the armature pushes the valve core through the push rod when the coil is de-energized.

In some embodiments, the armature includes a guide block, the valve body includes a guide sleeve, the guide block is disposed between the push rod and the armature, the guide block is assembled to the guide sleeve in a guiding manner, and when the coil is powered off, one end of the guide block abuts against the push rod to push the push rod.

In some embodiments, the valve body includes a housing and a valve housing, at least a portion of the valve housing is sealingly mounted in an interior cavity of the housing, the first and second apertures are disposed in the housing and communicate with the interior cavity of the housing, and the third aperture is disposed in the valve housing and communicates with the interior cavity of the housing.

In some embodiments, the valve housing has a chamber, the valve core is disposed in the chamber, the push rod is slidably connected to the valve housing, and at least a portion of the push rod is disposed in the chamber to push the valve core.

In some embodiments, the chamber has a first flange and a second flange, the spool abuts the first flange and moves away from the second flange to communicate the first aperture with the second aperture when the coil is energized, and the spool abuts the second flange and moves away from the first flange to communicate the second aperture with the third aperture when the coil is de-energized.

Drawings

Fig. 1 is a schematic structural view of a high-speed solenoid valve according to an embodiment of the present invention.

Fig. 2 is a schematic view of a valve sleeve of a high speed solenoid valve according to an embodiment of the present invention.

Reference numerals are as follows:

a yoke 1; an annular groove 11; a central portion 12; an annular portion 13;

a coil 2;

a valve body 3; a first hole 31; a second hole 32; a third hole 33; the fitting portion 34; the fitting groove 341; a guide sleeve 35; a housing 301; a valve housing 302; a first chamber 3021; a second cavity 3022; a chamber 3033; a first flange 3034; a second flange 3035;

a valve core 4;

an armature 5; a mounting groove 51; a guide block 52; an avoidance slot 521;

an elastic member 6;

a baffle 7;

a push rod 8.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.

A high-speed solenoid valve according to an embodiment of the present invention will be described with reference to fig. 1 and 2.

The high-speed electromagnetic valve comprises a yoke 1, a coil 2, a valve body 3 and a valve core 4.

The yoke 1 is provided with an annular groove 11, and the coil 2 is provided in the annular groove 11 and extends closed in the extending direction of the annular groove 11 and adapted to generate a magnetic field.

Specifically, the annular groove 11 extends along the geometric center circumference of the yoke 1 in a closed manner, the notch of the annular groove 11 faces the lower side, the inner side of the annular groove 11 forms a central portion 12, the outer peripheral side of the annular groove 11 forms an annular portion 13, the annular portion 13 is sleeved on the outer peripheral side of the central portion 12, the coil 2 is annular, the coil 2 is arranged on the bottom of the annular groove 11, the coil 2 is sleeved on the outer peripheral side of the central portion 12, and the annular portion 13 is sleeved on the outer peripheral side of the coil 2.

The valve body 3 is provided in a notch of the annular groove 11, the valve body 3 is slidably fitted to the valve body 4, the valve body 3 has a first hole 31, a second hole 32, and a third hole 33, the valve body 4 slides toward the yoke 1 when the coil 2 is energized to communicate the first hole 31 with the second hole 32, and the valve body 4 slides away from the yoke 1 when the coil 2 is de-energized to communicate the second hole 32 with the third hole 33.

Specifically, the valve body 3 is provided on the side of the yoke 1 that opens toward the annular groove 11, and one end of the valve body 3 is connected to the yoke 1, the valve element 4 is slidable with respect to the valve body 3 in the vertical up-down direction, the first hole 31, the second hole 32, and the third hole 33 are arranged at intervals along the depth direction of the annular groove 11, and the first hole 31 is close to the yoke 1, and the third hole 33 is far from the yoke 1.

When the coil 2 is energized, under the action of the magnetic field generated by the coil 2, the valve core 4 slides to the yoke 1 and isolates the first hole 31 from the second hole 32 and the third hole 33, and the second hole 32 is communicated with the third hole 33, when the coil 2 is de-energized, the valve core 4 slides towards the side departing from the yoke 1 due to the loss of the action of the magnetic field, the first hole 31 is communicated with the second hole 32, and the third hole 33 is isolated from the first hole 31 and the second hole 32, so that the switching action is realized.

According to the high-speed electromagnetic valve provided by the embodiment of the invention, the annular groove 11 is formed in the yoke iron 1, and the coil 2 is placed in the annular groove 11, so that on one hand, when the coil 2 is electrified, the yoke iron 1 generates a strong magnetic field towards one side of the notch of the annular groove 11, and the acting force of the magnetic field generated by the coil 2 on the valve element 4 is large, so that the action speed of the valve element 4 in the valve body 3 is accelerated, and the high-speed electromagnetic valve provided by the embodiment of the invention has the advantage of high response speed.

In some embodiments, the high-speed solenoid valve includes an armature 5 and an elastic member 6, the armature 5 is disposed in a notch of the annular groove 11, the armature 5 is attracted to the notch of the annular groove 11 when the coil 2 is energized to slide the valve core 4 toward the yoke 1, and the elastic member 6 is disposed between the armature 5 and the yoke 1 and is adapted to reset the armature 5 and slide the valve core 4 away from the yoke 1 when the coil 2 is de-energized.

Specifically, the armature 5 is disposed between the valve body 3 and the yoke 1, and the projection of the annular groove 11 in the vertical up-down direction falls within the projection of the armature 5 in the vertical up-down direction, the valve body 3 is provided with an assembling portion 34, an assembling groove 341 is provided in the assembling portion 34, a notch of the assembling groove 341 is arranged opposite to a notch of the annular groove 11 so that the annular groove 11 and the assembling groove 341 communicate, the assembling portion 34 extends along the outer peripheral side of the annular groove 11 in a closed manner, the assembling portion 34 is assembled to the yoke 1, and the armature 5 is assembled in the inner cavity of the assembling portion 34.

When the coil 2 is deenergized, the elastic member 6 has a set thickness in the vertical up-down direction to have a set interval between the armature 5 and the yoke 1, so that the armature 5 urges the valve spool 4 to slide relative to the valve body 3 along a side facing away from the yoke 1 to communicate the first and second holes 31 and 32 and to isolate the third hole 33 from the first and second holes 31 and 32.

When the coil 2 is energized, the armature 5 is attracted to the yoke 1 under the action of a magnetic field generated by the coil 2, and the elastic member 6 is compressed in the vertical up-down direction, so that the valve element 4 slides relative to the valve body 3 along the side facing the yoke 1 to isolate the first hole 31 from the second hole 32 and the third hole 33 and communicate the second hole 32 with the third hole 33.

Therefore, the armature 5 covers the notch of the annular groove 11, when the coil 2 is energized, the magnetic field generated by the coil 2 causes the armature 5 to be respectively attracted with the central part 12 of the yoke 1 and the annular part 13 of the yoke 1, so that the acting force of the magnetic field generated when the coil 2 is energized on the armature 5 is improved, the elastic member 6 can store more elastic potential energy, and the elastic potential energy stored in the elastic member 6 is released after the coil 2 is de-energized to cause the armature 5 to rapidly reset, thereby improving the response speed of the high-speed electromagnetic valve of the embodiment of the invention.

In some embodiments, the high-speed solenoid valve comprises a baffle 7, the baffle 7 is arranged in the annular groove 11 and is suitable for isolating the coil 2 from the notch of the annular groove 11, and at least part of the elastic element 6 is positioned in the annular groove 11 and is abutted against the baffle 7.

Specifically, the baffle 7 is annular, the baffle 7 extends around the outer periphery of the central portion 12 in a closed manner, the inner edge of the baffle 7 is connected with the central portion 12 in a sealing manner, the outer edge of the baffle 7 is connected with the annular portion 13 in a sealing manner, the coil 2 is sealed at the bottom of the annular groove 11, the elastic piece 6 extends along the vertical up-down direction, one end of the elastic piece 6 abuts against the baffle 7, and the other end of the elastic piece 6 abuts against the armature 5.

Therefore, on one hand, the coil 2 is sealed at the bottom of the annular groove 11 by the baffle 7, so that dirt is prevented from entering the annular groove 11 to influence the work of the coil 2, on the other hand, the upper end of the elastic piece 6 is matched in the annular groove 11 and is stopped against the baffle 7, so that the thickness dimension of a combined body of the yoke 1, the elastic piece 6 and the armature 5 in the vertical up-down direction is reduced, the stroke of the armature 5 is reduced, and the high-speed electromagnetic valve has the advantage of high response speed.

In some embodiments, the armature 5 is provided with a mounting groove 51, at least a part of the elastic member 6 is fitted in the mounting groove 51, and the other end of the elastic member 6 abuts against the bottom of the mounting groove 51.

Specifically, a mounting groove 51 is provided on a side of the armature 5 toward the yoke 1, the mounting groove 51 extends closed along an outer peripheral side of the annular groove 11, and a lower end of the elastic member 6 is fitted in the mounting groove 51.

Therefore, the lower end of the elastic element 6 is matched in the mounting groove 51, on one hand, the elastic element 6 is prevented from sliding in a plane vertical to the vertical direction relative to the armature 5, on the other hand, the thickness dimension of the combination of the yoke 1, the elastic element 6 and the armature 5 in the vertical up-down direction is reduced, and therefore the stroke of the armature 5 is reduced, and the high-speed electromagnetic valve has the advantage of high response speed

In some embodiments, the yoke 1 has a central portion 12, the annular groove 11 extends along an outer peripheral side of the central portion 12 in a closed manner, the elastic member 6 is a wave spring, and a part of the elastic member 6 is sleeved on the outer peripheral side of the central portion 12.

Specifically, the annular groove 11 extends in a closed manner in the vertical direction, the inner wall of the annular groove 11 surrounds to form a central portion 12, the central portion 12 extends in the vertical up-down direction, the elastic member 6 is a wave spring, and the elastic member 6 includes a plurality of wave-shaped elastic rings which are arranged in a staggered manner in the vertical up-down direction.

Therefore, the elastic part 6 is a wave spring and has a higher spring coefficient, when the armature 5 is attracted with the yoke 1 and compresses the elastic part 6, the elastic part 6 can store more elastic potential energy, and when the coil 2 is de-energized, the elastic part 6 releases the elastic potential energy rapidly so as to drive the valve core 4 to rapidly slide in the valve body 3, so that the high-speed electromagnetic valve has higher response speed.

In some embodiments, the high speed solenoid valve includes a push rod 8, the push rod 8 is slidably engaged with the valve body 3, the push rod 8 is disposed between the armature 5 and the valve core 4, and the armature 5 pushes the valve core 4 through the push rod 8 when the coil 2 is de-energized.

Specifically, the push rod 8 is provided between the armature 5 and the valve element 4, the push rod 8 extends in the vertical up-down direction, and the push rod 8 is slidable in the vertical direction with respect to the valve body 3.

When the coil 2 loses power, the armature 5 moves downwards, the lower end of the armature 5 abuts against the upper end of the push rod 8 and pushes the push rod 8 to slide downwards relative to the valve body 3, the lower end of the push rod 8 abuts against the valve core 4 to push the valve core 4 to slide downwards, the first hole 31 and the second hole 32 are communicated, and the third hole 33 is isolated from the first hole 31 and the second hole 32.

When the coil 2 is electrified, the armature 5 moves upwards and is attracted with the yoke 1, so that a gap is formed between the lower end of the armature 5 and the upper end of the push rod 8, the push rod 8 can slide upwards, the valve core 4 moves upwards to push the push rod 8 to move upwards under the action of hydraulic pressure, and the valve core 4 isolates the first hole 31 from the second hole 32 and the third hole 33 and communicates the second hole 32 with the third hole 33.

Therefore, the push rod 8 is arranged between the armature 5 and the valve core 4, the push rod 8 can slide vertically and vertically relative to the valve body 3, the upper end of the push rod 8 can be abutted against the armature 5, and the lower end of the push rod 8 can be abutted against the valve core 4, so that compared with the prior art that the push rod 8 is fixedly connected with at least one of the armature 5 or the valve core 4, the high-speed electromagnetic valve provided by the embodiment of the invention has good guidance performance, and the influence on the response speed of the high-speed electromagnetic valve after the high-speed electromagnetic valve works for a long time is avoided.

In some embodiments, the armature 5 includes a guide block 52, the valve body 3 includes a guide sleeve 35, the guide block 52 is disposed between the push rod 8 and the armature 5, the guide block 52 is guide-assembled to the guide sleeve 35, and when the coil 2 is de-energized, one end of the guide block 52 abuts against the push rod 8 to push the push rod 8.

Specifically, the upper end of the guide block 52 is fixedly connected to the lower end of the armature 5, the guide sleeve 35 extends in the vertical up-down direction, the guide block 52 is slidably fitted to the guide sleeve 35, and the guide block 52 can slide in the vertical direction.

Therefore, when the armature 5 slides vertically up and down, the guide block 52 slides vertically up and down relative to the guide sleeve 35, and the cooperation of the guide block 52 and the guide sleeve 35 improves the guidance of the armature 5 when sliding vertically, so that the deviation of the sliding direction of the armature 5 is avoided, and the influence on the response speed of the high-speed electromagnetic valve of the embodiment of the invention is avoided.

In addition, the guide sleeve 35 is provided with an avoiding groove 521, the avoiding groove 521 is arranged at the lower end of the guide sleeve 35, the avoiding groove 521 extends in the vertical direction, the opening direction of the avoiding groove 521 is downward, the upper ends of at least part of the valve body 3 and part of the push rod 8 are matched in the avoiding groove 521, and the upper end of the push rod 8 can stop against the bottom of the avoiding groove 521.

Therefore, at least part of the valve body 3 and part of the upper end of the push rod 8 are matched in the avoiding groove 521, the height dimension of the combination body of the valve body 3 and the armature 5 along the vertical up-down direction is reduced, on one hand, the structure of the high-speed electromagnetic valve is compact, on the other hand, the dimension chain of the high-speed electromagnetic valve of the embodiment of the invention, in which the coil 2 drives the valve core 4 to move when the high-speed electromagnetic valve works, is shortened, and the response speed of the high-speed electromagnetic valve of the embodiment of the invention is improved.

In some embodiments, the valve body 3 comprises a housing 301 and a valve sleeve 302, at least a portion of the valve sleeve 302 is sealingly mounted in an inner cavity of the housing 301, a first aperture 31 and a second aperture 32 are provided in the housing 301 and communicate with the inner cavity of the housing 301, and a third aperture 33 is provided in the valve sleeve 302 and communicate with the inner cavity of the housing 301.

Specifically, the outer shell 301 is sleeved on the outer peripheral side of the valve sleeve 302, the upper end of the outer shell 301 is connected with the yoke 1, the outer shell 301 is provided with an inner cavity, the inner cavity of the outer shell 301 extends in the vertical direction and penetrates through the outer shell 301, the first hole 31 and the second hole 32 are arranged in the outer shell 301, the first hole 31 communicates the inner cavity of the outer shell 301 with the peripheral wall of the outer shell 301, and the second hole 32 communicates the inner cavity of the outer shell 301 with the peripheral wall of the outer shell 301.

The valve housing 302 is disposed in the inner chamber of the housing 301, and the valve housing 302 extends in a vertical direction, the outer circumferential wall of the valve housing 302 is hermetically connected with the inner wall of the inner chamber of the housing 301, the valve housing 302 has a first chamber 3021 and a second chamber 3022, the first chamber 3021 communicates with the first hole 31, the second chamber 3022 communicates with the second hole 32, the first chamber 3021 is located at the upper side of the second chamber 3022, the lower end of the first chamber 3021 communicates with the second chamber 3022, and the valve cartridge 4 is disposed at the communication between the first chamber 3021 and the second chamber 3022.

The third orifice 33 is provided in the valve core 4 and the third orifice 33 extends in a vertical direction, an upper end of the third orifice 33 communicates with the second chamber 3022, and a lower end of the third orifice 33 communicates with a lower end surface of the valve housing 302.

Thus, the spool 4 is slidably fitted in the valve housing 302 and has a first position and a second position within the displacement stroke of the spool 4, in the first position, the spool 4 is located at the upper end of the displacement stroke thereof, and the spool 4 closes the lower end of the first chamber 3021 at the time to isolate the first chamber 3021 from the second chamber 3022, thereby isolating the first orifice 31 from the second orifice 32 and the third orifice 33 and communicating the second orifice 32 with the third orifice 33; in the second position, the spool 4 is at the lower end of its travel, with the spool 4 closing the upper end of the third bore 33, isolating the third bore 33 from the second chamber 3022, thereby isolating the third bore 33 from the second bore 32 and the first bore 31 and communicating the first bore 31 with the second bore 32.

In some embodiments, the valve housing 302 has a chamber 3033, the valve core 4 is disposed in the chamber 3033, the push rod 8 is slidably coupled to the valve housing 302, and at least a portion of the push rod 8 is disposed in the chamber 3033 to push the valve core 4.

Specifically, the chamber 3033 is located in the valve housing 302, the chamber 3033 extends in a vertical direction, one end of the first chamber 3021 communicates with the chamber 3033, the other end of the first chamber 3021 communicates with the first port 31, one end of the second chamber 3022 communicates with the chamber 3033, the other end of the second chamber 3022 communicates with the second port 32, and the chamber 3033 communicates with the upper end of the third port 33.

The upper end of the chamber 3033 is provided with a through hole which extends along the vertical direction, the lower end of the through hole is communicated with the chamber 3033, the upper end of the through hole is connected with the upper end surface of the valve sleeve 302, and the push rod 8 is in sliding fit in the through hole and slides along the vertical direction relative to the valve core 4.

Therefore, the lower end of the push rod 8 is arranged in the chamber 3033, and the lower end of the push rod 8 moves along with the sliding of the push rod 8, so that the moving stroke of the push rod 8 is reduced, and the response speed of the high-speed electromagnetic valve in the embodiment of the invention is improved.

In some embodiments, the chamber 3033 has a first flange 3034 and a second flange 3035, when the coil 2 is energized the spool 4 abuts the first flange 3034 and moves away from the second flange 3035 to communicate the first bore 31 with the second bore 32, and when the coil 2 is de-energized the spool 4 abuts the second flange 3035 and moves away from the first flange 3034 to communicate the second bore 32 with the third bore 33.

Specifically, the first flange 3034 is disposed between the first chamber 3021 and the second chamber 3022, the first flange 3034 extends along the outer peripheral side of the valve spool 4 in a closed manner, and when the valve spool 4 is located at the first position, the valve spool 4 abuts against the first flange 3034 to isolate the first chamber 3021 from the second chamber 3022.

The second flange 3035 is disposed between the second chamber 3022 and the third bore 33, the second flange 3035 extends along the outer periphery of the valve core 4 in a closed manner, and the geometric center of the second flange 3035 coincides with the geometric center of the first flange 3034, and when the valve core 4 is located at the second position, the valve core 4 is stopped by the second flange 3035 to isolate the second chamber 3022 from the third bore 33.

In some embodiments, the valve spool 4 is spherical, the second flange 3035 is spaced parallel to the first flange 3034, and the first flange 3034 is spaced from the second flange 3035 by a dimension less than the diameter of the valve spool 4.

When the coil 2 is energized, the spool 4 is moved upward by the hydraulic pressure against the first flange 3034 and sealingly connected to the first flange 3034, thereby disconnecting the first bore 31 from the second bore 32, and the spool 4 is spaced from the second flange 3035 to connect the second chamber 3022 to the third bore 33, thereby connecting the second bore 32 to the third bore 33.

When the coil 2 is de-energized, the elastic member 6 releases the elastic potential energy and increases in thickness, thereby pushing the push rod 8 through the armature 5 and the guide block 52 to move the valve core 4 downward and stop against the second flange 3035 to isolate the second chamber 3022 from the third orifice 33, and the valve core 4 has a clearance with the first flange 3034 to allow the first chamber 3021 to communicate with the second chamber 3022, thereby connecting the first orifice 31 with the second orifice 32 and disconnecting the third orifice 33 from the second orifice 32 and the first orifice 31.

Therefore, the valve core 4 is in abutting fit with the first flange 3034 or the second flange 3035 when moving in the chamber 3033, the connection mode of the first hole 31, the second hole 32 and the third hole 33 is controlled, the stroke of the valve core 4 is small, and the response speed of the high-speed electromagnetic valve of the embodiment of the invention is improved.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although the above embodiments have been shown and described, it should be understood that they are exemplary and should not be construed as limiting the present invention, and that many changes, modifications, substitutions and alterations to the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A high speed solenoid valve, comprising:

the magnetic field generating device comprises a yoke iron and a coil, wherein the yoke iron is provided with an annular groove, and the coil is arranged in the annular groove, extends in a closed mode along the extending direction of the annular groove and is suitable for generating a magnetic field;

the valve body is arranged in a notch of the annular groove, the valve core is assembled on the valve body in a sliding mode, the valve body is provided with a first hole, a second hole and a third hole, the valve core slides towards the yoke iron when the coil is electrified so that the first hole is communicated with the second hole, and the valve core slides away from the yoke iron when the coil is powered off so that the second hole is communicated with the third hole.

2. The high speed solenoid valve of claim 1 including an armature disposed in a notch of said annular groove, said armature engaging said notch of said annular groove when said coil is energized to slide said valve spool toward said yoke, and a resilient member disposed between said armature and said yoke adapted to reset said armature and slide said valve spool away from said yoke when said coil is de-energized.

3. The high-speed electromagnetic valve according to claim 2, comprising a baffle plate, wherein the baffle plate is arranged in an annular groove to be suitable for isolating the coil from a notch of the annular groove, and at least part of the elastic member is positioned in the annular groove and is abutted against the baffle plate.

4. The high-speed electromagnetic valve according to claim 3, wherein the armature is provided with a mounting groove, at least a part of the elastic member is fitted in the mounting groove, and the other end of the elastic member abuts against the bottom of the mounting groove.

5. The high-speed electromagnetic valve according to claim 4, wherein the yoke has a central portion, the annular groove extends along an outer peripheral side of the central portion in a closed manner, the elastic member is a wave spring, and a part of the elastic member is fitted to the outer peripheral side of the central portion.

6. The high speed solenoid valve of any one of claims 1-5 including a pushrod guided for sliding engagement with the valve body, the pushrod disposed between the armature and the valve spool, the armature pushing the valve spool via the pushrod when the coil is de-energized.

7. The high-speed electromagnetic valve according to claim 6, wherein the armature includes a guide block, the valve body includes a guide sleeve, the guide block is disposed between the push rod and the armature, and the guide block is assembled in the guide sleeve in a guiding manner, and when the coil is de-energized, one end of the guide block abuts against the push rod to push the push rod.

8. The high speed solenoid valve of claim 7 wherein said valve body comprises a housing and a valve housing, at least a portion of said valve housing sealingly mounted within an interior chamber of said housing, said first and second ports being disposed in said housing and communicating with said interior chamber of said housing, said third port being disposed in said valve housing and communicating with said interior chamber of said housing.

9. The high-speed solenoid valve of claim 8 wherein the housing has a chamber, the spool is disposed in the chamber, the pushrod is slidably coupled to the housing, and at least a portion of the pushrod is disposed in the chamber to urge the spool.

10. The high speed solenoid valve of claim 9 wherein said chamber has a first flange and a second flange, said spool abutting said first flange and moving away from said second flange to communicate said first orifice with said second orifice when said coil is energized, and said spool abutting said second flange and moving away from said first flange to communicate said second orifice with said third orifice when said coil is de-energized.

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