WO2024066337A1 - 电磁阀 - Google Patents

电磁阀 Download PDF

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Publication number
WO2024066337A1
WO2024066337A1 PCT/CN2023/091127 CN2023091127W WO2024066337A1 WO 2024066337 A1 WO2024066337 A1 WO 2024066337A1 CN 2023091127 W CN2023091127 W CN 2023091127W WO 2024066337 A1 WO2024066337 A1 WO 2024066337A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
valve core
core
outlet
pressure relief
Prior art date
Application number
PCT/CN2023/091127
Other languages
English (en)
French (fr)
Inventor
唐建国
金奇斌
卢音波
Original Assignee
比亚迪股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Publication of WO2024066337A1 publication Critical patent/WO2024066337A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F16K1/38—Valve members of conical shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/52—Means for additional adjustment of the rate of flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid

Definitions

  • the present disclosure relates to the technical field of solenoid valves, and in particular to a solenoid valve.
  • the control switch of the refrigerant flow of the air conditioning system is generally controlled by turning on and off the solenoid valve.
  • the structure of the solenoid valve in the related art is relatively complex, the control logic is not simple enough, the movement structure of the valve core between the connecting position and the blocking position is complex, and it is easy to occupy more internal space, which is not conducive to the layout of other systems.
  • the installation efficiency of the solenoid valve is low, and the sealing performance of the valve core and the outlet is poor.
  • the present disclosure aims to solve at least one of the technical problems existing in the prior art.
  • one purpose of the present disclosure is to provide a solenoid valve that can simplify the installation structure of the solenoid valve and reduce the manufacturing cost of the solenoid valve.
  • the solenoid valve comprises: a valve body, a valve core, and a first elastic member.
  • the valve body is provided with a magnetic core assembly, a valve cavity is defined in the valve body, an inlet and an outlet are formed on the valve body, and the inlet is connected to the valve cavity.
  • the valve core is arranged in the valve cavity and is located between the outlet and the magnetic core assembly. The valve core can move toward the outlet under the action of the magnetic core assembly to block the outlet so that the connection between the valve cavity and the outlet is cut off.
  • the valve core has a storage cavity and a first fluid channel, the first fluid channel is connected to the outlet, and the storage cavity is connected to the valve cavity when the valve core blocks the outlet.
  • the first elastic member is arranged between the valve body and the valve core. The valve core can move in a direction away from the outlet under the action of the first elastic member to open the outlet so that the outlet is connected to the valve cavity.
  • the valve core can move toward the outlet to block the outlet under the action of the magnetic core assembly to cut off the connection between the inlet and the outlet, or the valve core can move in the direction away from the outlet and separate from the outlet to open the outlet under the action of the first elastic member, so that the inlet and the outlet are connected through the valve cavity; the present application sets a storage cavity inside the valve core.
  • the storage cavity inside the valve core is easy to form a pressure difference with the first circulation channel, and the pressure inside the storage cavity is greater than the pressure inside the first fluid channel, which can better achieve the blocking of the outlet by the valve core; at the same time, when the valve core needs to be kept in a state of opening the outlet, the storage cavity inside the valve core will also form a pressure difference with the first circulation channel. At this time, the pressure inside the storage cavity is less than the pressure inside the valve cavity and the first fluid channel, which can better achieve the valve core being kept in an open state. Therefore, by setting a storage cavity inside the valve core, the reliability and stability of the solenoid valve can be improved.
  • the valve core can move between a connecting position and a disconnecting position, and at least one second fluid channel is provided between the valve core and the valve body; when the valve core is located at the disconnecting position, the valve core blocks the outlet to disconnect the connection between the inlet and the outlet, the storage chamber is connected to the valve chamber, and the external fluid is suitable for flowing to the storage chamber through the inlet via the second fluid channel; when the valve core is located at the connecting position, the valve core is separated from the outlet to connect the inlet and the outlet, and the connection between the storage chamber and the valve chamber is disconnected.
  • the magnetic core assembly further includes: a sleeve, a moving iron core, a stationary iron core, and a second elastic member, wherein the sleeve is fixed to an end of the valve body away from the valve core, at least a portion of the moving iron core is disposed in the sleeve, the moving iron core can move relative to the valve body in the sleeve, the stationary iron core is disposed in the sleeve and is located on a side of the moving iron core away from the valve core, and the second elastic member is disposed between the stationary iron core and the moving iron core.
  • the valve core is always maintained at the blocking position; during the process of the valve core moving from the blocking position to the connecting position, the magnetic core assembly is separated from the valve core and the outlet is connected to the storage chamber through the first fluid channel, and the valve core is in the first
  • the movable iron core is moved away from the outlet under the action of the elastic member to open the outlet so as to connect the outlet with the valve cavity.
  • the valve core is reset from the connecting position to the blocking position, the movable iron core is separated from the static iron core under the elastic force of the second elastic member, and the movable iron core drives the valve core to move toward the outlet, and the connection between the first fluid channel and the storage cavity is blocked.
  • the second elastic member acts on the valve core through the moving iron core so that the valve core blocks the outlet to isolate the connection between the inlet and the outlet; when the valve core is located at the connecting position, the valve core is separated from the outlet under the action of the first elastic member to enable the connection between the inlet and the outlet; the elastic force of the second elastic member is greater than the elastic force of the first elastic member.
  • the valve core is a plastic part.
  • one end of the storage chamber away from the outlet is open;
  • the second fluid channel includes: at least one first flow channel and at least one second flow channel, the first flow channel is formed on at least one of the outer wall of the valve core and the inner wall of the valve body; the second flow channel is jointly defined between the end of the valve core away from the outlet and the inner wall of the valve body away from the outlet, and the first flow channel is suitable for communicating with the storage chamber through the second flow channel.
  • the first flow channel extends along the axial direction of the valve core, and a cross-sectional area of the first flow channel gradually decreases in a direction from an end of the valve core adjacent to the outlet toward an end of the valve core away from the outlet.
  • the first flow channel is a groove formed on the outer side wall of the valve core, and the distance between the two side walls of the first flow channel gradually decreases in a direction from an end of the valve core adjacent to the outlet toward an end of the valve core away from the outlet.
  • a bottom wall of the first flow channel extends obliquely toward a direction away from a central axis of the valve core.
  • an end of the valve core away from the outlet is spaced apart from an inner wall of the valve body away from the outlet to define the second flow channel.
  • the end of the valve core away from the outlet is provided with at least one first rib extending along the circumference of the valve core, and a connecting channel is formed on the first rib and penetrates the two side surfaces of the first rib along the radial direction of the valve core, and the storage chamber is connected with the inlet through the connecting channel.
  • the width of the first rib is smaller than the wall thickness of the end of the valve core away from the outlet, and the surface of the first rib adjacent to the central axis of the valve core is flush with the inner wall surface of the valve core.
  • the number of the first flow channels is greater than the number of the communication channels.
  • a valve core extension portion extending along the axial direction of the valve core is provided in the storage chamber, and the first fluid channel is defined in the valve core extension portion.
  • the first fluid channel runs through both ends of the valve core extension portion so as to be suitable for communicating with the storage chamber and the outlet respectively, and the moving iron core is detachably matched with an end of the valve core extension portion adjacent to the moving iron core.
  • a pressure relief member is provided at the end of the valve core extension portion adjacent to the moving iron core, and at least one pressure relief hole is formed on the pressure relief member.
  • the pressure relief member is a pressure relief cover, and the pressure relief member cover is disposed on the end of the valve core extension portion adjacent to the moving iron core.
  • a plurality of positioning ribs are provided on the inner side wall of the pressure relief member and are spaced apart along the circumference of the pressure relief member; or the pressure relief member is interference fit with the end of the valve core extension portion adjacent to the moving iron core.
  • the pressure relief member includes a first pressure relief portion and a second pressure relief portion, the second pressure relief portion is connected to a side of the first pressure relief portion away from the moving iron core, the first pressure relief portion is arranged on an end surface of the valve core extension portion adjacent to the one end of the moving iron core, the second pressure relief portion is fitted in the first fluid channel, and the pressure relief hole passes through the first pressure relief portion and the second pressure relief portion.
  • the pressure relief hole is a circular hole, and the diameter of the pressure relief hole is d, wherein d satisfies: 0.4 mm ⁇ d ⁇ 1 mm.
  • the pressure relief component is a plastic component or a soft plastic component.
  • the valve body includes: a main body and a valve seat, wherein one end of the main body away from the magnetic core assembly is open, the inlet is formed on the main body, the valve seat is arranged at the end of the main body away from the magnetic core assembly, the valve seat and the main body jointly define the valve cavity, and the outlet is formed on the valve seat.
  • the valve core includes: a first valve core segment and a second valve core segment, the second valve core segment is connected to an end of the first valve core segment away from the outlet, the cross-sectional area of the second valve core segment is larger than the cross-sectional area of the first valve core segment to form a step portion between the first valve core segment and the second valve core segment, and one end of the first elastic member stops at the step portion.
  • the first elastic member and an outer circumferential surface of the first valve core segment are spaced apart from each other.
  • the valve seat includes a first valve seat mating portion and a valve seat extension portion connected to each other along the axial direction of the valve body, the valve seat extension portion is located on a side of the first valve seat mating portion away from the valve core, the cross-sectional area of the valve seat extension portion is larger than the cross-sectional area of the first valve seat mating portion to define a first step portion between the valve seat extension portion and the first valve seat mating portion, and an end of the first elastic member adjacent to the outlet stops at the first step portion.
  • the inner circumferential surface of the first elastic member abuts against the outer circumferential surface of the first valve seat matching portion.
  • the valve seat extension portion includes a first valve seat extension portion and a second valve seat extension portion connected to each other along the axial direction of the valve core, the second valve seat extension portion is located on a side of the first valve seat extension portion away from the first valve seat mating portion, the first valve seat extension portion is mated in the valve body, one end of the first elastic member adjacent to the outlet is abutted against the first valve seat extension portion, and the second valve seat extension portion is abutted against the end surface of the one end of the valve body.
  • a second valve seat fitting portion is provided on a side of the valve seat extension portion away from the first valve seat fitting portion, and a first sealing member is provided on an outer surface of the second valve seat fitting portion.
  • the body has a first chamber and a second chamber connected to each other along the axial direction of the valve core, the first chamber is located on a side of the second chamber away from the valve seat, the cross-sectional area of the second chamber is larger than the cross-sectional area of the first chamber, the second valve core section is fitted in the first chamber, the first valve core section is located in the second chamber, and the inlet is formed on the side wall of the second chamber.
  • the surface of the valve core suitable for abutting against the valve seat is formed as an arc surface.
  • an outer peripheral surface of an end of the body away from the outlet has a plurality of clamping surfaces arranged along the circumference of the body.
  • the body is an integrally formed piece.
  • valve seat is a body of revolution structure.
  • the first elastic member is a spring.
  • the first elastic member is a round wire spring or a flat wire spring.
  • the first elastic member is a cylindrical spring or a conical spring.
  • At least the portion of the valve core that cooperates with the outlet is provided with a soft rubber part.
  • FIG. 1 is a schematic diagram of a solenoid valve according to an embodiment of the present disclosure.
  • FIG. 2 is a perspective exploded schematic diagram of a solenoid valve according to an embodiment of the present disclosure.
  • FIG. 3 is a schematic diagram of a valve body according to an embodiment of the present disclosure.
  • FIG. 4 is a cross-sectional schematic diagram of a valve seat according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of a valve core according to an embodiment of the present disclosure.
  • FIG6 is a cross-sectional schematic diagram of a valve core according to an embodiment of the present disclosure (without soft rubber parts).
  • FIG. 7 is a cross-sectional schematic diagram of a valve core according to an embodiment of the present disclosure (with soft rubber parts).
  • FIG. 8 is a schematic diagram of a pressure relief member according to an embodiment of the present disclosure (with positioning ribs).
  • FIG. 9 is a schematic diagram of a pressure relief member according to an embodiment of the present disclosure (without positioning ribs).
  • FIG. 10 is a schematic diagram of assembling a conical spring according to an embodiment of the present disclosure.
  • the solenoid valve 100 includes a valve body 10 , a valve core 20 and a first elastic member 21 .
  • a magnetic core assembly 30 is provided on the valve body 10, a valve cavity 14 is defined in the valve body 10, an inlet 15 and an outlet 16 are formed on the valve body 10, and the inlet 15 is connected to the valve cavity 14.
  • the valve core 20 is provided in the valve cavity 14 and is located between the outlet 16 and the magnetic core assembly 30. Under the action of the magnetic core assembly 30, the valve core 20 can move toward the outlet 16 to block the outlet 16, so that the connection between the valve cavity 14 and the outlet 16 is cut off.
  • the valve core 20 has a storage cavity 22 and a first fluid channel 23, the first fluid channel 23 is connected to the outlet 16, and the storage cavity 22 is connected to the valve cavity 14 when the valve core 20 blocks the outlet 16.
  • the first elastic member 21 is provided between the valve body 10 and the valve core 20. Under the action of the first elastic member 21, the valve core 20 can move toward the direction away from the outlet 16 to open the outlet 16, so that the outlet 16 is connected to the valve cavity 14.
  • valve core 20 When the valve core 20 moves toward the outlet 16 along the axial direction of the valve body 10, the valve core 20 compresses the first elastic member 21, so that the valve core 20 stops against the outlet 16, and the outlet 16 is blocked to cut off the communication between the outlet 16 and the valve cavity 14, and the fluid entering from the inlet 15 enters the valve cavity 14 and then enters the storage cavity 22.
  • the magnetic core assembly 30 moves toward the direction away from the outlet 16, and the magnetic core assembly 30 is separated from the valve core 20.
  • the pressure inside the storage cavity 22 and the pressure inside the valve cavity 14 are balanced through the first fluid channel 23.
  • the first elastic member 21 drives the valve core 20 to move upward, so that the valve core 20 is separated from the outlet 16, and the outlet 16 is connected with the valve cavity 14, and the fluid entering the valve cavity 14 from the inlet 15 flows to the outlet 16.
  • the valve core 20 can move toward the outlet 16 under the action of the magnetic core assembly 30 to block the outlet 16, thereby isolating the connection between the inlet 15 and the outlet 16; or the valve core 20 can move in a direction away from the outlet 16 under the action of the first elastic member 21 and separate from the outlet 16 to open the outlet 16, so that the inlet 15 and the outlet 16 are connected through the valve cavity 14.
  • the storage cavity 22 inside the valve core 20 is easy to form a pressure difference with the first fluid channel 23, and the pressure inside the storage cavity 22 is greater than the pressure inside the first fluid channel 23, which can better achieve the valve core 20 blocking the outlet 16; at the same time, when the valve core 20 needs to be kept in a state of opening the outlet 16, the storage cavity 22 inside the valve core 20 will also form a pressure difference with the first fluid channel 23, at this time, the pressure inside the storage cavity 22 is less than the pressure inside the valve cavity 14 and the pressure inside the first fluid channel 23, which can better achieve the valve core 20 to be kept in an open state. Therefore, by providing the storage chamber 22 inside the valve core 20 , the reliability and stability of the solenoid valve 100 can be improved.
  • the valve core 20 can move between a connecting position and a blocking position.
  • the connecting position refers to the position of the valve core 20 when the outlet 16 is connected to the valve cavity 14.
  • the blocking position refers to the position of the valve core 20 when the connection between the valve cavity 14 and the outlet 16 is blocked.
  • At least one second fluid passage 24 is provided between the valve core 20 and the valve body 10.
  • valve core 20 When the valve core 20 is located at the blocking position, the valve core 20 blocks the outlet 16 to block the communication between the inlet 15 and the outlet 16, the storage chamber 22 is connected with the valve chamber 14, and the external fluid is suitable to flow to the storage chamber 22 through the inlet 15 via the second fluid passage 24; when the valve core 20 is located at the connecting position, the valve core 20 is separated from the outlet 16, so that the inlet 15 and the outlet 16 are connected, and the communication between the storage chamber 22 and the valve chamber 14 is blocked. That is, the valve core 20 has a connection position in the axial direction of the valve body 10 to connect the inlet 15 with the outlet 16, and has a separation position to separate the inlet 15 from the outlet 16.
  • the valve core 20 moves upward under the action of the magnetic core assembly 30, so that the valve core 20 moves from the separation position to the connection position, and the external fluid flows from the inlet 15 to the outlet 16; after the magnetic core assembly 30 is powered off, the magnetic core assembly 30 moves downward to drive the valve core 20 and the outlet 16 to stop, so that the valve core 20 moves from the connection position to the separation position, and a part of the external fluid flows from the inlet 15 through the valve cavity 14 and the second fluid channel 24 to the storage cavity 22. Therefore, the movement of the valve core 20 between the connection position and the separation position can facilitate the opening and closing of the outlet 16, and adjust the flow rate of the fluid flowing through the solenoid valve 100, so as to control a reasonable fluid flow rate according to different usage scenarios.
  • the magnetic core assembly 30 includes: a sleeve 301, a moving iron core 12, a static iron core 11, and a second elastic member 13.
  • the sleeve 301 is fixed to an end of the valve body 10 away from the valve core 20, and at least part of the moving iron core 12 is disposed in the sleeve 301, the moving iron core 12 can move relative to the valve body 10 in the sleeve 301, the static iron core 11 is disposed on a side of the moving iron core 12 away from the valve core 20, and the second elastic member 13 is disposed between the static iron core 11 and the moving iron core 12.
  • the second elastic member 13 acts on the valve core 20 through the movable iron core 12, so that the valve core 20 blocks the outlet 16 to block the connection between the inlet 15 and the outlet 16; when the valve core 20 is in the connection position, the valve core 20 is separated from the outlet 16 by the action of the first elastic member 21 to connect the inlet 15 and the outlet 16.
  • the elastic force of the second elastic member 13 is greater than the elastic force of the first elastic member 21.
  • one end of the sleeve 301 is connected to the valve body 10 , the static iron core 11 is disposed at the other end of the sleeve 301 , and the movable iron core 12 is disposed in the space defined by the sleeve 301 and can move in the sleeve 301 relative to the valve body 10 .
  • the magnetic core assembly 30 When the valve core 20 moves from the isolation position to the connection position, the magnetic core assembly 30 is energized, the moving iron core 12 compresses the second elastic member 13 to move toward the static iron core 11, the moving iron core 12 is separated from the valve core 20, the storage chamber 22 is connected to the first fluid channel 23, the pressure inside the storage chamber 22 is balanced with the pressure at the outlet 16, and the first elastic member 21 drives the valve core 20 to move toward the moving iron core 12 to separate the valve core 20 from the outlet 16, and the outlet 16 is connected to the valve chamber 14; when the valve core 20 moves from the connection position to the isolation position, the magnetic core assembly 30 is de-energized, the second elastic member 13 compresses the moving iron core 12 to move the moving iron core 12 in a direction away from the static iron core 11, and overcomes the elastic force of the first elastic member 21 and the gravity of the valve core 20 to move the valve core 20 toward the outlet 16 and stop with the outlet 16, and the outlet 16 is isolated from the valve chamber 14.
  • the elastic force of the second elastic member 13 is greater than the elastic force of the first elastic member 21, so that when the valve core 20 moves from the connecting position to the isolating position, the second elastic member 13 can overcome the first elastic member 21 and the valve core 20, so that the valve core 20 and the outlet 16 are stopped to achieve the blocking of the outlet 16, so that the solenoid valve 100 can maintain a normally closed state, and the structure and principle of the normally closed solenoid valve 100 are simple, and the structure has good reliability.
  • valve core 20 is always kept in the blocking position.
  • the movable iron core 12 moves under the magnetic force of the stationary iron core 11 and separates from the valve core 20.
  • the outlet 16 is connected to the storage chamber 22 through the first fluid channel 23.
  • the valve core 20 moves in a direction away from the outlet 16 under the action of the first elastic member 21 to open the outlet 16, so that the outlet 16 is connected to the valve chamber 14.
  • the movable iron core 12 When the valve core 20 is reset from the connecting position to the blocking position, the movable iron core 12 is separated from the stationary iron core 11 under the elastic force of the second elastic member 13, and the movable iron core 12 drives the valve core 20 to move toward the outlet 16, and the connection between the first fluid channel 23 and the storage chamber 22 is blocked.
  • the valve core 20 can move toward the outlet 16 and block the outlet 16 under the action of the magnetic core assembly 30 to cut off the connection between the inlet 15 and the outlet 16; or the valve core 20 can move in a direction away from the outlet 16 and separate from the outlet 16 under the action of the first elastic member 21 to open the outlet 16, so that the inlet 15 and the outlet 16 are connected through the valve cavity 14.
  • a storage cavity 22 is provided inside the valve core 20.
  • the storage cavity 22 inside the valve core 20 is easy to form a pressure difference with the first fluid channel 23, and the pressure inside the storage cavity 22 is greater than the pressure inside the first fluid channel 23, so that the valve core 20 can better block the outlet 16; at the same time, when the valve core 20 needs to be kept in a state of opening the outlet 16, the storage cavity 22 inside the valve core 20 will also form a pressure difference with the first fluid channel 23. At this time, the pressure inside the storage cavity 22 is less than the pressure inside the valve cavity 14 and the first fluid channel 23, so that the valve core 20 can be better kept in an open state. Therefore, by providing the storage chamber 22 inside the valve core 20 , the reliability and stability of the solenoid valve 100 can be improved.
  • the magnetic core assembly 30 is separated from the valve core 20, and the air pressure inside the storage chamber 22 is equal to the air pressure of the outlet 16.
  • the air pressure of the storage chamber 22 is balanced through the first fluid channel 23, and the air pressure inside the storage chamber 22 flows to the outlet 16 through the first fluid channel 23, and the flow rate of the first fluid channel 23 per unit time is greater than the flow rate of the second fluid channel 24 flowing into the storage chamber 22, so that the pressure inside the storage chamber 22 and the pressure inside the first fluid channel 23 can be quickly balanced, and the first elastic member 21 can overcome the gravity of the valve core 20 to drive the valve core 20 to move upward to separate the valve core 20 from the outlet 16.
  • the setting of the first fluid channel 23 can facilitate balancing the pressure of the storage chamber 22 and the outlet 16 when the valve core 20 is separated from the magnetic core assembly 30, so that the valve core 20 can be separated from the outlet 16 by using the first elastic member 21, and the structure of automatically opening the valve core 20 is simple, the volume of the solenoid valve 100 is reduced, the assembly process of the solenoid valve 100 is simplified, and the assembly is improved.
  • the valve core 20 is a plastic part.
  • the valve core 20 is a metal part, which is difficult to process, has high mass and high cost.
  • the valve core 20 of the present application is a plastic part, which is easier to process.
  • the valve core 20 can be formed into a structure containing a storage cavity 22 and a first flow channel 241 through an injection molding process, so that the side wall thickness of the valve core 20 is uniform and the processing cost is low.
  • the valve core 20 is a plastic part, which can effectively reduce costs and is easier to form, and can facilitate the lightweight design of the solenoid valve 100. When the valve core 20 and the outlet 16 stop, it can effectively reduce the generation of noise, improve the quietness and sealing of the solenoid valve 100.
  • the structure of the injection-molded valve core 20 is simpler, which can ensure the processing accuracy of the valve core 20, realize the precise installation of the valve core 20 and the valve body 10, and avoid the errors in the processing from affecting the movement of the valve core 20 in the valve body 10.
  • the end of the storage chamber 22 away from the outlet 16 is open, and the second fluid channel 24 includes: at least one first flow channel 241 and at least one second flow channel, the first flow channel 241 is formed on at least one of the outer wall of the valve core 20 and the inner wall of the valve body 10, and the second flow channel is defined by the end of the valve core 20 away from the outlet 16 and the inner wall of the valve body 10 away from the outlet 16, and the first flow channel 241 is suitable for communicating with the storage chamber 22 through the second flow channel.
  • the first flow channel 241 is provided on the outer wall of the valve core 20 as an example for explanation, and the fluid entering the valve chamber 14 from the inlet 15 flows into the storage chamber 22 along the first flow channel 241 and the second flow channel. Therefore, a first flow channel 241 is provided on the outer wall of the valve core 20, and a second flow channel is provided on the end surface of the valve core 20 away from the outlet 16. The first flow channel 241 is connected with the second flow channel, which can facilitate the communication between the valve cavity 14 and the storage cavity 22 and balance the gas pressure inside the storage cavity 22 and the valve cavity 14.
  • the provision of the first flow channel 241 and the second flow channel can make the valve cavity 14 communicate with the storage cavity 22, achieve the balance of the pressure inside the valve cavity 14 and the storage cavity 22, and facilitate the movement of the valve core 20 inside the valve cavity 14.
  • the first flow channel 241 and the second flow channel have simple structures, which is conducive to reducing the cost of achieving the communication between the storage cavity 22 and the valve cavity 14.
  • the first flow channel 241 extends along the axial direction of the valve core 20.
  • the cross-sectional area of the first flow channel 241 gradually decreases along the direction from the end of the valve core 20 adjacent to the outlet 16 toward the end of the valve core 20 away from the outlet 16.
  • the first flow channel 241 extends along the axial direction of the valve core 20 toward the open end of the valve core 20, and the cross-sectional area of the first flow channel 241 adjacent to the open end gradually decreases.
  • the first flow channel 241 extends along the axial direction of the valve core 20, and the cross-sectional area gradually decreases in the direction away from the outlet 16, which can increase the flow rate of the fluid when entering the storage chamber 22, and improve the structural strength of the open end of the valve core 20.
  • the first flow channel 241 is a groove formed on the outer side wall of the valve core 20.
  • the distance between the two side walls of the first flow channel 241 gradually decreases along the direction from the end of the valve core 20 adjacent to the outlet 16 toward the end of the valve core 20 away from the outlet 16. That is, the distance between the two side walls of the groove formed on the first flow channel 241 in the circumferential direction of the valve core 20 gradually decreases along the axial direction of the valve core 20 in the direction away from the outlet 16.
  • the side wall of the first flow channel 241 can have a guiding function, facilitating the flow of the fluid to the second flow channel.
  • the cross-sectional area of the first flow channel 241 can be gradually reduced by the two side walls gradually approaching each other, which can increase the flow rate of the fluid flowing out of the first flow channel 241 while ensuring the structural strength of the valve core 20.
  • the bottom wall of the first flow channel 241 extends obliquely toward the direction away from the central axis of the valve core 20, and the bottom wall is respectively connected to the two side walls on both sides of the circumferential direction of the valve core 20. That is, the bottom wall of the first flow channel 241 is a part of the side wall of the valve core 20, and the side wall of the valve core 20 extends obliquely from bottom to top along the axial direction of the valve core 20 toward the direction away from the center of the valve core 20.
  • the first flow channel 241 extends obliquely, which can increase the gap between the valve core 20 and the valve body 10, facilitate the flow of fluid from the first flow channel 241 to the storage chamber 22, reduce the possibility of contact between the valve core 20 and the valve body 10, and reduce the friction between the valve core 20 and the valve body 10 that may cause the valve core 20 or the valve body 10 to wear.
  • the side walls of the first flow channel 241 gradually approach from bottom to top along the axial direction of the valve core 20
  • the bottom wall of the first flow channel 241 extends obliquely from bottom to top along the axial direction of the valve core 20 gradually away from the center of the valve core 20.
  • the end of the valve core 20 away from the outlet 16 is spaced apart from the inner wall of the valve body 10 away from the outlet 16 to define a
  • the valve core 20 and the valve body 10 define a second flow channel on the side away from the outlet 16 , so that the second flow channel is connected to the first flow channel 241 , so that the fluid entering the valve cavity 14 can flow into the storage cavity 22 through the first flow channel 241 and the second flow channel.
  • At least one first rib 25 extending along the circumference of the valve core 20 is provided at one end of the valve core 20 away from the outlet 16, and a communication channel 251 is formed on the first rib 25 and penetrates through both side surfaces of the first rib 25 along the radial direction of the valve core 20, and the storage chamber 22 is communicated with the inlet 15 through the communication channel 251.
  • a plurality of first ribs 25 are arranged at intervals along the circumferential direction of the valve core 20 on the end surface of the end of the valve core 20 away from the outlet 16, and a communication channel 251 is defined between two adjacent first ribs 25.
  • the number of the first rib 25 is one, and one first rib 25 can extend along the circumference of the valve core 20, and the communication channel 251 can penetrate through the first rib 25 so that the inside of the storage chamber 22 can be communicated with the valve chamber 14 through the communication channel 251. Therefore, the setting of the first rib 25 facilitates the formation of the connecting channel 251, so that the fluid flows between the valve cavity 14 and the storage cavity 22 through the first flow channel 241 and the connecting channel 251, thereby increasing the convenience of flow, and the first rib 25 can reduce the difficulty of setting the connecting channel 251.
  • the width of the first rib 25 is smaller than the wall thickness of the end of the valve core 20 away from the outlet 16, and the surface of the first rib 25 adjacent to the central axis of the valve core 20 is flush with the inner wall surface of the valve core 20.
  • the wall thickness of the first rib 25 along the radial direction of the valve core 20 is smaller than the wall thickness of the side wall of the valve core 20 in the radial direction, so that the convenience and reliability of assembly of the valve core 20 when the valve core 20 stops at the valve body 10 are increased.
  • the width of the first rib 25 is small, which can facilitate the installation of the valve core 20 and the valve body 10, and the valve core 20 can stop on the valve body 10 smoothly, avoiding the reduction of the sealing when the valve core 20 stops at the valve body 10, and the first rib 25 is convenient for the arrangement of the second flow channel.
  • the plurality of first flow channels 241 and the plurality of communication channels 251 are arranged at intervals along the circumference of the valve core 20.
  • the plurality of first flow channels 241 and the plurality of communication channels 251 are arranged at intervals along the circumference of the valve core 20, so that the fluid entering the valve cavity 14 can quickly flow from multiple directions through the first flow channels 241 and the communication channels 251 to the storage cavity 22, thereby increasing the liquid inflow rate of the storage cavity 22, so that the valve core 20 can be moved from the isolation position to the communication position in time.
  • the number of the first flow channels 241 is greater than the number of the connecting channels 251.
  • the number of the first flow channels 241 is greater than the number of the connecting channels 251, and the fluids in the plurality of first flow channels 241 are gathered and flow to the connecting channels 251, which facilitates the fluid in the valve cavity 14 to enter the storage cavity 22, and increases the flow rate of the fluid when entering the storage cavity 22.
  • a valve core extension portion 26 extending along the axial direction of the valve core 20 is provided in the storage chamber 22, and a first fluid channel 23 is defined in the valve core extension portion 26.
  • the first fluid channel 23 runs through both ends of the valve core extension portion 26 to be respectively connected to the storage chamber 22 and the outlet 16, and the movable iron core 12 is detachably matched with an end of the valve core extension portion 26 adjacent to the movable iron core 12.
  • the valve core extension portion 26 is located in the storage chamber 22 and extends along the axial direction of the valve core 20.
  • valve core extension portion 26 One end of the valve core extension portion 26 is connected to an end of the valve core 20 adjacent to the outlet 16, and the other end of the valve core 20 is opposite to the movable iron core 12.
  • the movable iron core 12 stops against the valve core extension portion 26, and the valve core 20 is separated from the outlet 16.
  • the second elastic member 13 moves against the movable iron core 12 and the valve core 20 toward the outlet 16, and overcomes the elastic force of the first elastic member 21 to stop the valve core 20 and the outlet 16.
  • valve core 20 moves from the blocking position to the connecting position, the movable iron core 12 moves upward, the movable iron core 12 is separated from the valve core extension 26, the first fluid channel 23 located in the valve core extension 26 is opened, and the fluid inside the storage chamber 22 flows to the outlet 16 through the first fluid channel 23 defined in the valve core extension 26, so that the pressure inside the storage chamber 22 is balanced with the pressure at the outlet 16, and the first elastic member 21 drives the valve core 20 to move upward to connect the inlet 15 with the outlet 16.
  • valve core extension portion 26 extends out of the open end of the storage chamber 22 in the axial direction of the valve core 20, which can shorten the stroke of the moving iron core 12 so that the moving iron core 12 can stop the valve core 20 in a timely and effective manner, thereby improving the movement efficiency of the valve core 20.
  • a valve core extension portion 26 is arranged inside the storage chamber 22, and the valve core extension portion 26 defines a first fluid channel 23, so that the moving iron core 12 drives the valve core 20 to move downward by abutting against the valve core extension portion 26.
  • the first fluid channel 23 can connect the storage chamber 22 and the outlet 16, so that the first elastic member 21 can overcome the gravity of the valve core 20 to move the valve core 20 upward to open the outlet 16, thereby realizing the connection between the inlet 15 and the outlet 16.
  • a pressure relief member 27 is provided at one end of the valve core extension 26 adjacent to the moving iron core 12, and at least one pressure relief hole 271 is formed on the pressure relief member 27.
  • the storage chamber 22 is connected to the first fluid channel 23 through the pressure relief hole 271.
  • the pressure relief member 27 is provided at the end of the valve core extension 26 adjacent to the open end of the valve core 20, and the pressure relief member 27 is detachably connected to the valve core extension 26.
  • the pressure relief member 27 is located between the moving iron core 12 and the valve core extension 26;
  • the fluid inside the storage chamber 22 flows into the first fluid channel 23 through the pressure relief hole 271 of the pressure relief member 27 and then flows out. Therefore, by providing the pressure relief member 27 at the other end of the valve core extension 26, the sound when the fluid inside the storage chamber 22 flows to the first fluid channel 23 can be reduced, and the quietness when the air pressure inside the storage chamber 22 and the outlet 16 are balanced can be improved, thereby improving the user experience.
  • the pressure relief member 27 is a pressure relief cover, which is provided at one end of the valve core extension 26 adjacent to the moving iron core 12.
  • the pressure relief member 27 is a pressure relief cover, which can facilitate the installation of the pressure relief member 27 and the valve core extension 26 and improve the installation efficiency.
  • a plurality of positioning ribs 272 are provided on the inner side wall of the pressure relief member 27 at intervals along the circumference of the pressure relief member 27 , and each positioning rib 272 extends along the axial direction of the valve core 20 ; or, as shown in FIG9 , the pressure relief member 27 is interference fit with one end of the valve core extension 26 adjacent to the moving iron core 12 . That is, the pressure relief member 27 can be directly sleeved on the end of the valve core extension 26 away from the outlet 16 .
  • the provision of a plurality of positioning ribs 272 can increase the reliability and tightness of the installation of the pressure relief member 27 and the valve core extension 26 , and at the same time facilitate disassembly and replacement due to wear during long-term use.
  • the pressure relief member 27 includes a first pressure relief portion 273 and a second pressure relief portion 274, the second pressure relief portion 274 is connected to the side of the first pressure relief portion 273 away from the moving iron core 12, the first pressure relief portion 273 is arranged on the end surface of the valve core extension portion 26 adjacent to the moving iron core 12, the second pressure relief portion 274 is fitted in the first fluid channel 23, the cross-sectional area of the first pressure relief portion 273 is larger than the cross-sectional area of the second pressure relief portion 274, and the pressure relief hole 271 passes through the first pressure relief portion 273 and the second pressure relief portion 274.
  • the provision of the first pressure relief portion 273 and the second pressure relief portion 274 facilitates the installation of the pressure relief member 27 and the valve core extension portion 26, improves the efficiency and reliability of the installation, and at the same time, when the moving iron core 12 stops on the pressure relief member 27, the sealing inside the storage cavity 22 can be guaranteed.
  • the multiple pressure relief holes 271 are arranged at intervals on the pressure relief member 27.
  • the pressure relief holes 271 are arranged on the first pressure relief portion 273. Therefore, the design of the multiple pressure relief holes 271 can effectively ensure the rate of pressure relief, so that the pressure inside the storage chamber 22 and the outlet 16 can be quickly balanced, so that the valve core 20 can be moved from the isolation position to the connection position in time.
  • the pressure relief member 27 is a plastic member or a soft rubber member 29. Therefore, the pressure relief member 27 is a plastic member or a soft rubber member 29, so that the moving iron core 12 can have a buffering and vibration reduction effect when it stops against the valve core extension 26, avoiding the moving iron core 12 and the valve core extension 26 from hard contact, thereby improving the quiet effect.
  • the valve body 10 includes a main body 101 and a valve seat 102.
  • the end of the main body 101 away from the moving iron core 12 is open, an inlet 15 is formed on the main body 101, and the valve seat 102 is arranged at the end of the main body 101 away from the moving iron core 12.
  • the valve seat 102 and the main body 101 define a valve cavity 14 together, and an outlet 16 is formed on the valve seat 102.
  • the valve core 20 is arranged in the valve cavity 14 defined by the valve seat 102 and the main body 101, and can move up and down along the axial direction of the main body 101.
  • valve core 20 moves upward to be located in the connecting position, the fluid enters the valve cavity 14 from the inlet 15 and flows out from the outlet 16, and the fluid flow rate can be adjusted by adjusting the position of the valve core 20.
  • the main body 101 is an integrally formed part, so that the valve core 20 and the valve body 10 can maintain a high coaxiality. Therefore, the arrangement of the main body 101 and the valve seat 102 facilitates the formation of the valve cavity 14, and an inlet 15 is formed on the valve seat 102 to enable the inlet 15 to be connected with the outlet 16 through the valve cavity 14.
  • the structure of the valve body 10 is relatively simple, which can avoid the valve core 20 from rubbing against the side wall of the main body 101 when moving inside the valve cavity 14.
  • the valve core 20 in combination with FIG. 1 , FIG. 2 and FIG. 7 , includes a first valve core section 201 and a second valve core section 202.
  • the second valve core section 202 is connected to an end of the first valve core section 201 away from the outlet 16.
  • the cross-sectional area of the second valve core section 202 is larger than the cross-sectional area of the first valve core section 201 to form a step portion 28 between the first valve core section 201 and the second valve core section 202.
  • One end of the first elastic member 21 abuts against the step portion 28, and the first elastic member 21 and the outer peripheral surface of the first valve core section 201 are spaced apart from each other.
  • the first elastic member 21 is sleeved outside the first valve core section 201, and the first elastic member 21 does not contact the first valve core section 201, that is, the cross-sectional area of the first elastic member 21 is larger than the cross-sectional area of the first valve core section 201, and the cross-sectional area of the first elastic member 21 along the axial direction of the valve core 20 is equal.
  • a step portion 28 is formed between the first valve core section 201 and the second valve core section 202, which is convenient for the installation and abutment of the first elastic member 21.
  • One end of the first elastic member 21 abuts against the step portion 28, and the other end can abut against the valve seat 102 or the inner wall of the valve cavity 14.
  • Different assembly methods and different shapes of the first elastic member 21 can be selected according to design requirements.
  • the first elastic member 21 is spaced apart from the outer circumference of the first valve core segment 201.
  • the first elastic member 21 and the first valve core segment 201 which are spaced apart, can prevent the valve seat 102 and the first elastic member 21 from generating friction during the relative movement, thereby preventing the valve seat 102 or the first elastic member 21 from being worn, and extending the service life of the first valve core segment 201 and the first elastic member 21.
  • the valve seat 102 includes a first valve seat mating portion 1021 and a valve seat extension portion 1022 connected to each other along the axial direction of the valve body 10, the valve seat extension portion 1022 is located on the side of the first valve seat mating portion 1021 away from the valve core 20, the cross-sectional area of the valve seat extension portion 1022 is larger than the cross-sectional area of the first valve seat mating portion 1021 to define a first step portion 1023 between the valve seat extension portion 1022 and the first valve seat mating portion 1021, and the end of the first elastic member 21 away from the moving iron core 12 stops at the first step portion 1023.
  • the valve seat 102 has a first valve seat matching portion 1021 extending toward the valve core 20.
  • the outer peripheral surface of the first valve seat matching portion 1021 is located on the side of the outer peripheral surface of the first valve core section 201 away from the central axis of the valve core 20.
  • the first elastic member 21 is sleeved on the outer peripheral surface of the first valve seat matching portion 1021. One end of the first elastic member 21 is sleeved outside the first valve core section 201, and the other end of the first elastic member 21 is sleeved outside the first valve seat matching portion 1021 and abuts against the first step portion 1023.
  • the valve seat extension portion 1022 is provided on the outer peripheral side of the first valve seat matching portion 1021 and is lower than the surface of the first valve seat matching portion 1021 adjacent to the valve core 20. The other end of the first elastic member 21 abuts against the valve seat extension portion 1022, which facilitates the installation and fixation of the first elastic member 21.
  • the first valve seat matching portion 1021 can limit the first elastic member 21 to prevent the first elastic member 21 from moving in the radial direction of the valve core 20, so that the first valve core segment 201 and the first elastic member 21 can move along the axial direction of the valve core 20, increase the stability of the first elastic member 21 during the up and down movement, facilitate the installation of the first elastic member 21, and prevent the first elastic member 21 from contacting the first valve core segment 201 or the inner wall of the valve cavity 14 during movement to cause abnormal noise.
  • the inner circumference of the first elastic member 21 abuts against the outer circumference of the first valve seat matching portion 1021.
  • the inner circumference of the first elastic member 21 abuts against the outer circumference of the first valve seat matching portion 1021, so as to achieve a tight fit between the first elastic member 21 and the first valve seat matching portion 1021, facilitate the installation and positioning of the first elastic member 21, and improve the installation efficiency of the first elastic member 21.
  • the valve seat extension portion 1022 includes a first valve seat extension portion 10221 and a second valve seat extension portion 10222 connected to each other along the axial direction of the valve core 20, the second valve seat extension portion 10222 is located on the side of the first valve seat extension portion 10221 away from the first valve seat matching portion 1021, the first valve seat extension portion 10221 is matched in the valve body 10, the end of the first elastic member 21 away from the moving iron core 12 stops against the first valve seat extension portion 10221, and the second valve seat extension portion 10222 stops against the end surface of one end of the valve body 10.
  • first valve seat extension portion 10221 and the second valve seat extension portion 10222 are arranged along the radial direction of the valve core 20, and the first valve seat extension portion 10221 is arranged adjacent to the first valve seat matching portion 1021, the above-mentioned other end of the first elastic member 21 stops at the upper surface of the first valve seat extension portion 10221, and the second valve seat extension portion 10222 is lower than the surface of the first valve seat extension portion 10221 adjacent to the valve core 20 side along the axial direction of the valve core 20.
  • the setting of the first valve seat extension portion 10221 and the second valve seat extension portion 10222 facilitates the installation of the first elastic member 21 to form a limit for the first elastic member 21, and at the same time facilitates the installation of the main body 101 and the valve seat 102, simplifies the installation structure of the main body 101 and the valve seat 102, and improves the installation efficiency of the main body 101 and the valve seat 102.
  • a second valve seat fitting portion 1024 is provided on a side of the valve seat extension portion 1022 away from the first valve seat fitting portion 1021, and a first sealing member 1025 is provided on the outer surface of the second valve seat fitting portion 1024.
  • the second valve seat fitting portion 1024 and the first valve seat fitting portion 1021 are arranged along the axial direction of the valve core 20, and the valve seat extension portion 1022 is arranged on the outer side of the first valve seat fitting portion 1021 and the second valve seat fitting portion 1024 along the radial direction of the valve core 20.
  • the first valve seat fitting portion 1021, the second valve seat fitting portion 1024 and the valve seat extension portion 1022 can be formed into a rotating body structure through an integrated molding process, so as to facilitate the coaxiality of the first valve seat fitting portion 1021 and the second valve seat fitting portion 1024, simplify the processing process of the valve seat 102, improve the processing accuracy of the valve seat 102, and facilitate the miniaturization design and manufacturing of the valve seat 102.
  • a sealing member 1025 is formed on the outer surface of the second valve seat fitting portion 1024. The sealing groove extends along the circumference of the valve core 20, and a first sealing member 1025 is arranged in the sealing groove. When the valve seat 102 is assembled with an external system such as an oil circuit body, the first sealing member 1025 can increase the sealing performance of the installation.
  • the body 101 has a first chamber 1011 and a second chamber 1012 that are connected to each other along the axial direction of the valve core 20, the first chamber 1011 is located at a side of the second chamber 1012 away from the valve seat 102, the cross-sectional area of the second chamber 1012 is larger than the cross-sectional area of the first chamber 1011, the second valve core section 202 is fitted in the first chamber 1011, the first valve core section 201 is located in the second chamber 1012, and the inlet 15 is formed on the side wall of the second chamber 1012.
  • the first chamber 1011 and the second chamber 1012 are arranged along the axial direction of the valve core 20, and the first chamber 1011 is located at an end of the second chamber 1012 away from the valve seat 102.
  • the second valve core section 202 is fitted with the first chamber 1011 and moves up and down along the first chamber 1011, and the first chamber 1011 has a guiding effect on the valve core 20.
  • the first valve core section 201 is located in the second chamber 1012, and the cross-sectional area of the second chamber 1012 is larger than that of the first chamber 1011.
  • An inlet 15 is provided on the side wall of the second chamber 1012, so that the fluid entering the inlet 15 is located in the valve chamber 14, and the inlet 15 can be arranged adjacent to the outlet 16, so as to facilitate the communication between the inlet 15 and the outlet 16.
  • the first chamber 1011 and the second chamber 1012 have different cross-sectional areas, so as to facilitate the formation of the limit and guide of the first valve core section 201, so that the valve seat 102 can move smoothly in the first chamber 1011, and the cross-sectional area of the second chamber 1012 is larger, so as to facilitate the valve core 20 to stop at the outlet 16 and facilitate the fluid to enter the valve chamber 14 and flow to the storage chamber 22.
  • the surface of the valve core 20 suitable for abutting against the valve seat 102 is formed as an arc surface.
  • the surface of the valve core 20 adjacent to the outlet 16 is an arc surface, which can facilitate the abutment between the valve core 20 and the outlet 16, increase the sealing between the valve core 20 and the outlet 16, and increase the convenience of the abutment between the valve core 20 and the outlet 16.
  • the outer peripheral surface of one end of the body 101 adjacent to the moving iron core 12 has a plurality of clamping surfaces 1013 arranged along the circumference of the body 101.
  • the plurality of clamping surfaces 1013 are arranged at intervals along the circumference of the valve core 20, so as to facilitate the body 101 to cooperate with an external device such as a wrench, and to achieve the installation of the body 101 and the external oil circuit. Therefore, the clamping surface 1013 is provided on the body 101, so as to facilitate the clamping of the body 101 to drive the body 101 to rotate and achieve the installation of the body 101.
  • the first elastic member 21 is a spring.
  • the first elastic member 21 is one of a round wire spring, a flat wire spring, a cylindrical spring and a conical spring.
  • a conical spring is taken as an example.
  • the first elastic member 21 gradually decreases in the direction away from the valve seat 102 along the axial direction of the valve core 20, and one end of the first elastic member 21 abuts against the step portion 28, and the other end abuts against the inner wall of the valve cavity 14.
  • a support rib 10121 is provided on the inner wall of the valve cavity 14, and the support rib 10121 can extend along the circumferential direction of the valve core 20, and the other end of the first elastic member 21 abuts against the support rib 10121.
  • the support rib 10121 is arranged above the inlet 15 to prevent the incoming fluid from directly contacting the first elastic member 21, thereby extending the service life of the first elastic member 21. Therefore, the first elastic member 21 is a spring, which can make the first elastic member 21 have good elasticity, making it easy for the valve core 20 to move from the isolation position to the connection position. At the same time, it can effectively reduce the production cost of the solenoid valve 100 and reduce the cost of later use and maintenance of the solenoid valve 100.
  • At least the portion of the valve core 20 that matches the outlet 16 is provided with a soft rubber member 29, which can be embedded or sleeved on the surface of the valve core 20 on one side adjacent to the outlet 16.
  • a soft rubber member 29 can be embedded or sleeved on the surface of the valve core 20 on one side adjacent to the outlet 16.
  • first feature and second feature may include one or more of the features.
  • plural means two or more.
  • a first feature “above” or “below” a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them.
  • a first feature "above”, “above” and “above” a second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

公开了一种电磁阀（100），包括：阀体（10）、阀芯（20）和第一弹性件（21）。阀体上设有磁芯组件（30），且阀体内限定出阀腔（14）。阀体上形成有进口（15）和出口（16），进口与阀腔连通。阀芯设于阀腔内，阀芯可在磁芯组件作用下朝向出口的方向移动以封堵出口，阀芯内具有存储腔（22）和第一流体通道（23），第一流体通道与出口连通，存储腔在阀芯封堵出口时与阀腔连通。阀芯可在第一弹性件的作用下朝向远离出口的方向移动以打开出口。

Description

电磁阀
相关申请的交叉引用
本申请要求在2022年9月30日提交至中国国家知识产权局、申请号为202211211330.6、名称为“电磁阀”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及电磁阀技术领域，尤其是涉及一种电磁阀。
背景技术
相关技术中，对于车辆内部的流体控制，一般通过电磁阀的通断来控制例如空调系统的冷媒流量的控制开关。但是，相关技术中的电磁阀的结构较为复杂，控制逻辑不够简要，阀芯在连通位置和隔断位置之间的移动结构复杂，容易占用较多的内部空间，不利于其他系统的布置。而且，电磁阀的安装效率低下，阀芯与出口止抵时密封性较差。
发明内容
本公开旨在至少解决现有技术中存在的技术问题之一。为此，本公开的一个目的在于提出一种电磁阀，可以简化电磁阀的安装结构，降低电磁阀的制造成本。
根据本公开实施例的电磁阀，包括：阀体、阀芯、第一弹性件，所述阀体上设有磁芯组件，所述阀体内限定出阀腔，所述阀体上形成有进口和出口，所述进口与所述阀腔连通。所述阀芯设于所述阀腔内且位于所述出口和所述磁芯组件之间，所述阀芯可在磁芯组件作用下朝向所述出口的方向移动以封堵所述出口使得所述阀腔与所述出口的连通隔断，所述阀芯内具有存储腔和第一流体通道，所述第一流体通道与所述出口连通，所述存储腔在所述阀芯封堵所述出口时与所述阀腔连通。所述第一弹性件设于所述阀体和所述阀芯之间，所述阀芯可在所述第一弹性件的作用下朝向远离所述出口的方向移动以打开所述出口使得所述出口与所述阀腔连通。
根据本公开的电磁阀，阀芯可以在磁芯组件的作用下朝向出口移动封堵出口，以将进口与出口之间的连通隔断，或者阀芯可以在第一弹性件的作用下朝向远离出口的方向移动并与出口分离打开出口，以使进口与出口通过阀腔连通；本申请通过在阀芯内部设置存储腔，在阀芯需要保持在封堵出口的状态时，阀芯内部的存储腔容易与第一流通通道之间形成压力差，且存储腔内部的压力大于第一流体通道内部的压力，可以更好实现阀芯对出口的封堵；同时在阀芯需要保持在打开出口的状态时，阀芯内部的存储腔也会与第一流通通道之间形成压力差，此时存储腔内部的压力小于阀腔以及第一流体通道内部的压力，可以更好的实现阀芯保持在打开状态，因此，通过在阀芯内部设置存储腔，可以提高电磁阀的可靠性和稳定性。
在一些实施例中，所述阀芯可在连通位置和隔断位置之间移动，所述阀芯与所述阀体之间具有至少一个第二流体通道；当所述阀芯位于所述隔断位置时，所述阀芯封堵所述出口以隔断所述进口和所述出口的连通，所述存储腔与所述阀腔连通，外部流体适于通过所述进口经所述第二流体通道流向所述存储腔；当所述阀芯位于所述连通位置时，所述阀芯与所述出口分离以使所述进口和所述出口连通，所述存储腔与所述阀腔的连通被隔断。
在一些实施例中，所述磁芯组件进一步包括：套筒、动铁芯、静铁芯、第二弹性件，所述套筒固定于所述阀体的远离所述阀芯的一端，至少部分所述动铁芯设于所述套筒内，所述动铁芯可在套筒内相对于所述阀体移动，所述静铁芯设在所述套筒内且位于所述动铁芯的远离所述阀芯的一侧，所述第二弹性件设在所述静铁芯和所述动铁芯之间。
在一些实施例中，所述阀芯常保持在所述隔断位置；在所述阀芯从所述隔断位置向所述连通位置移动的过程中，所述磁芯组件与所述阀芯分离且所述出口通过所述第一流体通道与所述存储腔连通，且所述阀芯在所述第一 弹性件的作用下朝向远离所述出口的方向移动以打开所述出口使得所述出口和所述阀腔连通。当所述阀芯从所述连通位置复位至所述隔断位置时，所述动铁芯在所述第二弹性件的弹力作用下与所述静铁芯分离，且所述动铁芯带动所述阀芯朝向所述出口移动，所述第一流体通道与所述存储腔的连通被隔断。
在一些实施例中，当所述阀芯位于所述隔断位置时，所述第二弹性件通过所述动铁芯作用于所述阀芯使所述阀芯封堵所述出口以隔断所述进口和所述出口的连通；当所述阀芯位于所述连通位置时，所述阀芯在所述第一弹性件的作用下与所述出口分离以使所述进口和所述出口的连通；所述第二弹性件的弹力大于所述第一弹性件的弹力。
在一些实施例中，所述阀芯为塑胶件。
在一些实施例中，所述存储腔的远离所述出口的一端敞开；所述第二流体通道包括：至少一个第一流道、至少一个第二流道，所述第一流道形成在所述阀芯的外侧壁和所述阀体的内侧壁中的至少一个上；所述第二流道由所述阀芯的远离所述出口的一端与所述阀体的远离所述出口的内壁之间共同限定出，所述第一流道适于通过所述第二流道与所述存储腔连通。
在一些实施例中，所述第一流道沿所述阀芯的轴向延伸，沿从所述阀芯的邻近所述出口的一端朝向所述阀芯的远离所述出口的一端的方向、所述第一流道的横截面积逐渐减小。
在一些实施例中，所述第一流道为形成在所述阀芯的外侧壁上的凹槽，沿从所述阀芯的邻近所述出口的一端朝向所述阀芯的远离所述出口的一端的方向，所述第一流道的两个侧壁之间的距离逐渐减小。
在一些实施例中，沿从所述阀芯的邻近所述出口的一端朝向所述阀芯的远离所述出口的一端的方向，所述第一流道的底壁朝向远离所述阀芯的中心轴线的方向倾斜延伸。
在一些实施例中，所述阀芯的远离所述出口的一端与所述阀体的远离所述出口的内壁之间彼此间隔开以限定出所述第二流道。
在一些实施例中，所述阀芯的远离所述出口的一端设有沿所述所述阀芯的周向延伸的至少一个第一凸筋，所述第一凸筋上形成有沿所述阀芯的径向贯穿所述第一凸筋的两侧表面的连通通道，所述存储腔通过所述连通通道与所述进口连通。
在一些实施例中，所述第一凸筋的宽度小于所述阀芯的远离所述出口的所述一端的壁厚，所述第一凸筋的邻近所述阀芯的中心轴线的表面与所述阀芯的内壁面平齐。
在一些实施例中，所述第一流道和所述连通通道分别为多个，多个所述第一流道和多个所述连通通道分别沿所述阀芯的周向间隔设置。
在一些实施例中，所述第一流道的数量大于所述连通通道的数量。
在一些实施例中，所述存储腔内设有沿所述阀芯的轴向延伸的阀芯延伸部，所述阀芯延伸部内限定出所述第一流体通道，所述第一流体通道贯穿所述阀芯延伸部的两端以适于分别与所述存储腔和所述出口连通，所述动铁芯与所述阀芯延伸部的邻近所述动铁芯的一端可分离地配合。
在一些实施例中，所述阀芯延伸部的邻近所述动铁芯的所述一端设有泄压件，所述泄压件上形成有至少一个泄压孔，当所述动铁芯与所述阀芯延伸部的邻近所述动铁芯的所述一端分离时所述存储腔通过所述泄压孔与所述第一流体通道连通。
在一些实施例中，所述泄压件为泄压盖，所述泄压件盖设在所述阀芯延伸部的邻近所述动铁芯的所述一端。
在一些实施例中，所述泄压件的内侧壁上设有沿所述泄压件的周向间隔设置的多个定位筋；或所述泄压件与所述阀芯延伸部的邻近所述动铁芯的所述一端过盈配合。
在一些实施例中，所述泄压件包括第一泄压部和第二泄压部，所述第二泄压部连接在所述第一泄压部的远离所述动铁芯的一侧，所述第一泄压部设在所述阀芯延伸部的邻近所述动铁芯的所述一端的端面上，所述第二泄压部配合在所述第一流体通道内，所述泄压孔贯穿所述第一泄压部和所述第二泄压部。
在一些实施例中，所述泄压孔为多个，多个所述泄压孔在所述泄压件上彼此间隔设置。
在一些实施例中，所述泄压孔为圆孔，所述泄压孔的直径为d，其中，所述d满足：0.4mm≤d≤1mm。
在一些实施例中，所述泄压件为塑胶件或软胶件。
在一些实施例中，所述阀体包括：本体、阀座，所述本体的远离所述磁芯组件的一端敞开，所述本体上形成有所述进口，所述阀座设在所述本体的远离所述磁芯组件的所述一端，所述阀座和所述本体之间共同限定出所述阀腔，所述阀座上形成有所述出口。
在一些实施例中，所述阀芯包括：第一阀芯段、第二阀芯段，所述第二阀芯段连接在所述第一阀芯段的远离所述出口的一端，所述第二阀芯段的横截面积大于所述第一阀芯段的横截面积以在所述第一阀芯段和所述第二阀芯段之间形成台阶部，所述第一弹性件的一端与所述台阶部止抵。
在一些实施例中，所述第一弹性件与所述第一阀芯段的外周面彼此间隔开。
在一些实施例中，所述阀座包括沿所述阀体的轴向彼此相连的第一阀座配合部和阀座延伸部，所述阀座延伸部位于所述第一阀座配合部的远离所述阀芯的一侧，所述阀座延伸部的横截面积大于所述第一阀座配合部的横截面积以在所述阀座延伸部和所述第一阀座配合部之间限定出第一台阶部，所述第一弹性件的邻近所述出口的一端与所述第一台阶部止抵。
在一些实施例中，所述第一弹性件的内周面与所述第一阀座配合部的外周面止抵。
在一些实施例中，所述阀座延伸部包括沿所述阀芯的轴向彼此相连的第一阀座延伸部和第二阀座延伸部，所述第二阀座延伸部位于所述第一阀座延伸部的远离所述第一阀座配合部的一侧，所述第一阀座延伸部配合在所述阀体内，所述第一弹性件的邻近所述出口的一端与所述第一阀座延伸部止抵，所述第二阀座延伸部与所述阀体的所述一端的端面止抵。
在一些实施例中，所述阀座延伸部的远离所述第一阀座配合部的一侧设有第二阀座配合部，所述第二阀座配合部的外表面上设有第一密封件。
在一些实施例中，所述本体具有沿所述阀芯的轴向彼此连通的第一腔室和第二腔室，所述第一腔室位于所述第二腔室的远离所述阀座的一侧，所述第二腔室的横截面积大于所述第一腔室的横截面积，所述第二阀芯段配合在所述第一腔室内，所述第一阀芯段位于所述第二腔室内，所述进口形成在所述第二腔室的侧壁上。
在一些实施例中，所述阀芯的适于与所述阀座止抵的表面形成为圆弧面。
在一些实施例中，所述本体的远离所述出口的一端的外周面具有沿所述本体的周向排布的多个夹持面。
在一些实施例中，所述本体为一体成型件。
在一些实施例中，所述阀座为回转体结构。
在一些实施例中，所述第一弹性件为弹簧。
在一些实施例中，所述第一弹性件为圆线弹簧或扁线弹簧。
在一些实施例中，所述第一弹性件为圆柱弹簧或锥形弹簧。
在一些实施例中，所述阀芯的至少与所述出口配合的部分设有软胶件。
本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本公开实施例的电磁阀的示意图。
图2是根据本公开实施例的电磁阀的立体拆分示意图。
图3是根据本公开实施例的阀体的示意图。
图4是根据本公开实施例的阀座的剖面示意图。
图5是根据本公开实施例的阀芯的示意图。
图6是根据本公开实施例的阀芯的剖面示意图(无软胶件)。
图7是根据本公开实施例的阀芯的剖面示意图(有软胶件)。
图8是根据本公开实施例的泄压件的示意图(有定位筋)。
图9是根据本公开实施例的泄压件的示意图(无定位筋)。
图10是根据本公开实施例的锥形弹簧的装配示意图。
附图标记：
100、电磁阀；10、阀体；101、本体；1011、第一腔室；1012、第二腔室；10121、支撑筋；1013、夹持面；
102、阀座；1021、第一阀座配合部；1022、阀座延伸部；10221、第一阀座延伸部；10222、第二阀座延伸部；1023、第一台阶部；1024、第二阀座配合部；1025、第一密封件；11、静铁芯；12、动铁芯；13、第二弹性件；14、阀腔；15、进口；16、出口；20、阀芯；201、第一阀芯段；202、第二阀芯段；21、第一弹性件；22、存储腔；23、第一流体通道；24、第二流体通道；241、第一流道；25、第一凸筋；251、连通通道；26、阀芯延伸部；27、泄压件；271、泄压孔；272、定位筋；28、台阶部；29、软胶件。
具体实施方式
下面详细描述本公开的实施例，参考附图描述的实施例是示例性的。下面参考图1-图10描述根据本公开实施例的电磁阀100，电磁阀100包括：阀体10、阀芯20和第一弹性件21。
具体而言，如图1所示，阀体10上设有磁芯组件30，阀体10内限定出阀腔14，阀体10上形成有进口15和出口16，进口15与阀腔14连通。阀芯20设于阀腔14内且位于出口16和磁芯组件30之间，阀芯20可在磁芯组件30作用下，朝向出口16的方向移动以封堵出口16，使得阀腔14与出口16的连通隔断。阀芯20内具有存储腔22和第一流体通道23，第一流体通道23与出口16连通，存储腔22在阀芯20封堵出口16时与阀腔14连通。第一弹性件21设于阀体10和阀芯20之间。阀芯20可在第一弹性件21的作用下朝向远离出口16的方向移动以打开出口16，使得出口16与阀腔14连通。
在阀芯20沿阀体10的轴向方向朝向出口16运动时，阀芯20压缩第一弹性件21，以使阀芯20与出口16止抵，实现对出口16的封堵，以隔断出口16与阀腔14的连通，且从进口15进入的流体进入阀腔14后进入存储腔22内。在阀芯20沿阀体10的轴向方向朝向远离出口16的方向运动时，磁芯组件30朝向远离出口16的方向移动，磁芯组件30与阀芯20分离，存储腔22内部的和阀腔14内部的压力通过第一流体通道23实现平衡，第一弹性件21带动阀芯20向上移动，以使阀芯20与出口16分离，出口16与阀腔14连通，且从进口15进入阀腔14内部的流体流向出口16。
根据本公开实施例的电磁阀100，阀芯20可以在磁芯组件30的作用下朝向出口16移动以封堵出口16，从而将进口15与出口16之间的连通隔断；或者阀芯20可以在第一弹性件21的作用下朝向远离出口16的方向移动并与出口16分离以打开出口16，以使进口15与出口16通过阀腔14连通。本申请通过在阀芯20内部设置存储腔22，在阀芯20需要保持在封堵出口16的状态时，阀芯20内部的存储腔22容易与第一流体通道23之间形成压力差，且存储腔22内部的压力大于第一流体通道23内部的压力，可以更好地实现阀芯20对出口16的封堵；同时在阀芯20需要保持在打开出口16的状态时，阀芯20内部的存储腔22也会与第一流体通道23之间形成压力差，此时存储腔22内部的压力小于阀腔14内部的以及第一流体通道23内部的压力，可以更好地实现阀芯20保持在打开状态。因此，通过在阀芯20内部设置存储腔22，可以提高电磁阀100的可靠性和稳定性。
在一些实施例中，如图1所示，阀芯20可在连通位置和隔断位置之间移动。连通位置指的是出口16与阀腔14连通时，阀芯20所处的位置。隔断位置指的是阀腔14与出口16的连通隔断时，阀芯20所处的位置。阀芯 20与阀体10之间具有至少一个第二流体通道24。当阀芯20位于隔断位置时，阀芯20封堵出口16以隔断进口15和出口16的连通，存储腔22与阀腔14连通，外部流体适于通过进口15经第二流体通道24流向存储腔22；当阀芯20位于连通位置时，阀芯20与出口16分离，以使进口15和出口16连通，存储腔22与阀腔14的连通被隔断。也即阀芯20在阀体10的轴向方向具有使进口15与出口16连通的连通位置，且具有使进口15与出口16隔断的隔断位置，阀芯20在磁芯组件30的作用下向上移动，以使阀芯20从隔断位置移动到连通位置，外部流体从进口15流向出口16；在磁芯组件30断电后，磁芯组件30向下移动带动阀芯20与出口16止抵，以使阀芯20从连通位置移动到隔断位置，外部流体的一部分从进口15经阀腔14和第二流体通道24流向存储腔22内。由此，阀芯20在连通位置和隔断位置之间移动，可以便于实现对出口16的打开和关闭，调节流体流经电磁阀100的流量，以便于根据使用场景的不同来控制合理的流体流量。
在一些实施例中，如图1和图2所示，磁芯组件30包括：套筒301、动铁芯12、静铁芯11和第二弹性件13。套筒301固定于阀体10的远离阀芯20的一端，且至少部分动铁芯12设于套筒301内，动铁芯12可在套筒301内相对于阀体10移动，静铁芯11设在动铁芯12的远离阀芯20的一侧，第二弹性件13设在静铁芯11和动铁芯12之间。
当阀芯20位于隔断位置时，第二弹性件13通过动铁芯12作用于阀芯20，使阀芯20封堵出口16以隔断进口15和出口16的连通；当阀芯20位于连通位置时，阀芯20在第一弹性件21的作用下与出口16分离以使进口15和出口16,连通。其中，第二弹性件13的弹力大于第一弹性件21的弹力。
例如，套筒301的一端与阀体10连接，静铁芯11设于套筒301的另一端，动铁芯12设于套筒301限定的空间内且相对于阀体10可以在套筒301内移动。在阀芯20从隔断位置运动到连通位置时，磁芯组件30通电，动铁芯12压缩第二弹性件13朝向静铁芯11移动，动铁芯12与阀芯20分离，存储腔22与第一流体通道23连通，存储腔22内部的压力与出口16处的压力平衡，第一弹性件21带动阀芯20朝向动铁芯12移动以使阀芯20与出口16分离，出口16与阀腔14连通；在阀芯20从连通位置运动到隔断位置时，磁芯组件30断电，第二弹性件13压缩动铁芯12以使动铁芯12朝向远离静铁芯11的方向运动，并克服第一弹性件21的弹性力和阀芯20的重力以使阀芯20朝向出口16移动并与出口16止抵，出口16与阀腔14隔断。
由此，第二弹性件13的弹力大于第一弹性件21的弹力，以使阀芯20在从连通位置移动到隔断位置时，能够利用第二弹性件13克服第一弹性件21以及阀芯20等，使阀芯20与出口16止抵实现对出口16的封堵，以使电磁阀100能够保持常闭状态，实现电磁阀100常闭的结构和原理简单，且结构具有良好的可靠性。
进一步地，如图1所示，阀芯20常保持在隔断位置，在阀芯20从隔断位置向连通位置移动的过程中，动铁芯12在静铁芯11的磁力作用下移动并与阀芯20分离，出口16通过第一流体通道23与存储腔22连通，且阀芯20在第一弹性件21的作用下朝向远离出口16的方向移动以打开出口16，使得出口16和阀腔14连通。在阀芯20从连通位置复位至所述隔断位置时，动铁芯12在第二弹性件13的弹力作用下与静铁芯11分离，且动铁芯12带动阀芯20朝向出口16移动，第一流体通道23与存储腔22的连通被隔断。
根据本公开的电磁阀100，阀芯20可以在磁芯组件30的作用下朝向出口16移动并封堵出口16，以将进口15与出口16之间的连通隔断；或者阀芯20可以在第一弹性件21的作用下朝向远离出口16的方向移动并与出口16分离以打开出口16，以使进口15与出口16通过阀腔14连通。本申请通过在阀芯20内部设置存储腔22，在阀芯20需要保持在封堵出口16的状态时，阀芯20内部的存储腔22容易与第一流体通道23之间形成压力差，且存储腔22内部的压力大于第一流体通道23内部的压力，可以更好地实现阀芯20对出口16的封堵；同时在阀芯20需要保持在打开出口16的状态时，阀芯20内部的存储腔22也会与第一流体通道23之间形成压力差，此时存储腔22内部的压力小于阀腔14以及第一流体通道23内部的压力，可以更好地实现阀芯20保持在打开状态。因此，通过在阀芯20内部设置存储腔22，可以提高电磁阀100的可靠性和稳定性。
在阀芯20需要从隔断位置移动到连通位置时，磁芯组件30与阀芯20分离，存储腔22内部的气压与出口16 的气压通过第一流体通道23实现平衡，存储腔22内部的气压经第一流体通道23流向出口16，且第一流体通道23单位时间内的流量大于第二流体通道24流入存储腔22内的流量，从而可以快速地实现存储腔22内部的压力与第一流体通道23内的压力平衡，第一弹性件21可以克服阀芯20的重力带动阀芯20向上移动实现阀芯20与出口16的分离。由此，第一流体通道23的设置可以便于在阀芯20与磁芯组件30分离时平衡存储腔22与出口16的压力，以便于利用第一弹性件21使阀芯20与出口16分离，实现阀芯20自动打开的结构简单，减小电磁阀100的体积，简化电磁阀100的装配工序、提高装配。
可选地，阀芯20为塑胶件。现有技术中，阀芯20为金属件，加工难度大，且质量大，成本高。本申请的阀芯20为塑胶件，更易加工。例如，阀芯20可以通过注塑工艺形成内部含有存储腔22和第一流道241的结构，以使阀芯20的侧壁壁厚均匀，加工成本低。阀芯20为塑胶件可以有效降低成本，且更容易成形，且可以便于实现电磁阀100的轻量化设计，在阀芯20与出口16止抵时能够有效降低噪音的产生，提高电磁阀100的静音性和密封性。同时，注塑成型的阀芯20结构更加简单，能够保证阀芯20的加工精度，实现阀芯20与阀体10的精准安装，避免加工存在的误差影响阀芯20在阀体10内的移动。
在一些实施例中，如图1和图7所示，存储腔22的远离出口16的一端敞开，第二流体通道24包括：至少一个第一流道241、至少一个第二流道，第一流道241形成在阀芯20的外侧壁和阀体10的内侧壁中的至少一个上，第二流道由阀芯20的远离出口16的一端与阀体10的远离出口16的内壁之间共同限定出，第一流道241适于通过第二流道与存储腔22连通。这里以第一流道241设于阀芯20的外侧壁上为例进行说明，从进口15进入到阀腔14内部的流体沿第一流道241和第二流道流向存储腔22内。由此，在阀芯20的外侧壁上设置第一流道241，在阀芯20的远离出口16的一端的端面上设置第二流道，第一流道241与第二流道连通，可以便于阀腔14与存储腔22之间的连通，平衡存储腔22与阀腔14内部的气压。由此，第一流道241和第二流道的设置，可以使阀腔14与存储腔22连通，实现阀腔14与存储腔22内部压力的平衡，有利于阀芯20在阀腔14内部的移动，且第一流道241与第二流道的结构简单，有利于降低实现存储腔22和阀腔14连通的成本。
在一些实施例中，如图5所示，第一流道241沿阀芯20的轴向延伸。沿从阀芯20的邻近出口16的一端朝向阀芯20的远离出口16的一端的方向，第一流道241的横截面积逐渐减小。第一流道241沿阀芯20的轴向朝向阀芯20敞开的一端延伸，且第一流道241的邻近该敞开的一端的横截面积逐渐减小。由此，第一流道241沿阀芯20的轴向方向延伸，且朝向远离出口16的方向横截面积逐渐减小，可以增加流体在进入存储腔22内部时的流速，提高阀芯20的该敞开一端的结构强度。
进一步地，如图5所示，第一流道241为形成在阀芯20的外侧壁上的凹槽。沿从阀芯20的邻近出口16的一端朝向阀芯20的远离出口16的一端的方向，第一流道241的两个侧壁之间的距离逐渐减小。也即，第一流道241上形成的凹槽在阀芯20周向上的两个侧壁之间的距离沿阀芯20的轴向在远离出口16的方向上逐渐减小。由此，第一流道241的侧壁可以具有导向作用，便于流体流向第二流道，同时，可以通过逐渐靠近的两个侧壁以使第一流道241的横截面积逐渐减小，这能够增加流体流出第一流道241的流速，同时保证阀芯20的结构强度。
在一些实施例中，如图5和图6所示，沿从阀芯20的邻近出口16的一端朝向阀芯20的远离出口16的一端的方向，第一流道241的底壁朝向远离阀芯20的中心轴线的方向倾斜延伸，底壁在阀芯20周向方向的两侧分别与上述两个侧壁连接。即第一流道241的底壁为阀芯20的侧壁的一部分，阀芯20的侧壁沿阀芯20的轴向方向从下到上朝向远离阀芯20的中心的方向倾斜延伸。由此，第一流道241倾斜延伸，这可以增大阀芯20与阀体10之间的间隙，便于流体从第一流道241流向存储腔22，降低阀芯20与阀体10之间接触的可能性，降低阀芯20与阀体10之间可能存在的摩擦导致阀芯20或者阀体10磨损的情况出现。当然，在本实施例中第一流道241的侧壁沿着阀芯20的轴向从下到上逐渐靠近的同时，第一流道241的底壁沿阀芯20的轴向从下到上逐渐远离阀芯20的中心倾斜延伸。
在一些实施例中，阀芯20的远离出口16的一端与阀体10的远离出口16的内壁之间彼此间隔开，以限定出 第二流道。由此，阀芯20和阀体10在远离出口16的一侧限定出第二流道，便于第二流道与第一流道241连通，以使进入阀腔14内部的流体能够经第一流道241和第二流道流向存储腔22内。
在一些实施例中，结合图1和图6，阀芯20的远离出口16的一端设有沿阀芯20的周向延伸的至少一个第一凸筋25，第一凸筋25上形成有沿阀芯20的径向贯穿第一凸筋25的两侧表面的连通通道251，存储腔22通过连通通道251与进口15连通。多个第一凸筋25在阀芯20远离出口16的一端的端面上沿阀芯20的周向方向间隔设置，相邻的两个第一凸筋25之间限定出连通通道251。第一凸筋25的个数为一个，一个第一凸筋25可以沿阀芯20的周向延伸，连通通道251可以贯穿第一凸筋25以使存储腔22内部可以通过连通通道251连通阀腔14。由此，第一凸筋25的设置，便于连通通道251的形成，以使流体经第一流道241和连通通道251在阀腔14和存储腔22之间流动，增加流动的便捷性，且第一凸筋25可以降低设置连通通道251的难度。
在一些实施例中，如图5所示，第一凸筋25的宽度小于阀芯20的远离出口16的一端的壁厚，第一凸筋25的邻近阀芯20的中心轴线的表面与阀芯20的内壁面平齐。第一凸筋25设置在阀芯20敞开的一端的端面上时，第一凸筋25沿阀芯20的径向方向的壁厚小于阀芯20的侧壁在径向上的壁厚，以使阀芯20在止抵阀体10时增加装配的便捷性和可靠性。由此，第一凸筋25的宽度较小，可以便于阀芯20与阀体10的安装，阀芯20能够顺利止抵在阀体10上，避免阀芯20与阀体10止抵时密封性降低，同时第一凸筋25便于第二流道的设置。
在一些实施例中，如图5所示，第一流道241和连通通道251分别为多个，多个第一流道241和多个连通通道251分别沿阀芯20的周向间隔设置。由此，多个第一流道241和多个连通通道251沿阀芯20的周向间隔设置，以使阀腔14内部进入的流体能够从多个方向快速地经第一流道241和连通通道251流向存储腔22中，提高存储腔22的进液速率，以使阀芯20能够及时从隔断位置移动到连通位置。
可选地，如图5所示，第一流道241的数量大于连通通道251的数量。由此，第一流道241的数量大于连通通道251的数量，多个第一流道241内的流体汇集后流向连通通道251，便于阀腔14内的流体进入存储腔22内，增加流体进入存储腔22内部时的流速。
在一些实施例中，如图5和图7所示，存储腔22内设有沿阀芯20的轴向延伸的阀芯延伸部26，阀芯延伸部26内限定出第一流体通道23，第一流体通道23贯穿阀芯延伸部26的两端以适于分别与存储腔22和出口16连通，动铁芯12与阀芯延伸部26的邻近动铁芯12的一端可分离地配合。阀芯延伸部26位于存储腔22内，且沿阀芯20的轴向方向延伸，阀芯延伸部26的一端与阀芯20邻近出口16的一端连接，阀芯20的另一端与动铁芯12相对。在阀芯20处于连通位置时，动铁芯12与阀芯延伸部26止抵，阀芯20与出口16分离。当阀芯20从连通位置移动到隔断位置时，第二弹性件13抵着动铁芯12和阀芯20朝向出口16移动，并克服第一弹性件21的弹力以使阀芯20与出口16止抵。在阀芯20从隔断位置移动到连通位置时，动铁芯12向上移动，动铁芯12与阀芯延伸部26分离，位于阀芯延伸部26内的第一流体通道23打开，存储腔22内部的流体经阀芯延伸部26内限定出的第一流体通道23流向出口16，以使存储腔22内部的压力与出口16处的压力平衡，第一弹性件21带动阀芯20向上移动以使进口15与出口16连通。此外，为便于动铁芯12与阀芯延伸部26止抵，阀芯延伸部26在阀芯20轴向方向伸出存储腔22的敞开的一端，这可以缩短动铁芯12的行程，以便于动铁芯12能够及时有效地止抵阀芯20，提高阀芯20的运动效率。
由此，在存储腔22内部设置阀芯延伸部26，且阀芯延伸部26限定出第一流体通道23，以便于动铁芯12通过与阀芯延伸部26止抵带动阀芯20向下移动，第一流体通道23可以连通存储腔22和出口16，便于第一弹性件21克服阀芯20的重力以使阀芯20上移打开出口16，实现进口15与出口16的连通。
在一些实施例中，参照图1和图8，阀芯延伸部26的邻近动铁芯12的一端设有泄压件27，泄压件27上形成有至少一个泄压孔271。当动铁芯12与阀芯延伸部26的邻近动铁芯12的一端分离时，存储腔22通过泄压孔271与第一流体通道23连通。泄压件27与阀芯延伸部26的邻近阀芯20敞开的一端设置，泄压件27与阀芯延伸部26可拆卸连接。在动铁芯12与阀芯延伸部26止抵时，泄压件27位于动铁芯12和阀芯延伸部26之间；在 动铁芯12与阀芯延伸部26分离时，存储腔22内部的流体经泄压件27的泄压孔271流进第一流体通道23后流出。由此，在阀芯延伸部26的另一端设置泄压件27，可以降低存储腔22内部的流体流向第一流体通道23时的声音，提高存储腔22内部与出口16处气压平衡时的静音性，提高用户的使用体验。
可选地，泄压件27为泄压盖，泄压件27盖设在阀芯延伸部26的邻近动铁芯12的一端。由此，泄压件27为泄压盖，可以便于泄压件27与阀芯延伸部26的安装，提高安装效率。
在一些实施例中，如图8所示，泄压件27的内侧壁上设有沿泄压件27的周向间隔设置的多个定位筋272，每个定位筋272沿阀芯20的轴向方向延伸；或者，如图9所示，泄压件27与阀芯延伸部26的邻近动铁芯12的一端过盈配合。即泄压件27可以直接套设在阀芯延伸部26远离出口16的一端。由此，多个定位筋272的设置可以增加泄压件27与阀芯延伸部26安装的可靠性和紧密性，同时便于在长期使用过程中由于磨损拆卸更换。
根据本公开一些实施例，泄压件27包括第一泄压部273和第二泄压部274，第二泄压部274连接在第一泄压部273的远离动铁芯12的一侧，第一泄压部273设在阀芯延伸部26的邻近动铁芯12的一端的端面上，第二泄压部274配合在第一流体通道23内，第一泄压部273的横截面积大于第二泄压部274的横截面积，且泄压孔271贯穿第一泄压部273和第二泄压部274。由此，第一泄压部273和第二泄压部274的设置便于泄压件27与阀芯延伸部26的安装，提高安装的效率和安装的可靠性，同时，在动铁芯12止抵在泄压件27上能够保障存储腔22内部的密封性。
进一步地，如图8和图9所示，泄压孔271为多个，多个泄压孔271在泄压件27上彼此间隔设置。泄压孔271设于第一泄压部273上。由此，多个泄压孔271的设计，可以有效保证泄压的速率，以使存储腔22内部与出口16处的压力能够快速实现平衡，以使阀芯20能够及时从隔断位置移动到连通位置。
在一些实施例中，泄压孔271为圆孔，泄压孔271的直径为d，其中，d满足：0.4mm≤d≤1mm。例如，d＝0.5mm。若直径小于0.4mm，可能会由于孔径过小导致流体流经的速度降低，增加存储腔22与阀腔14内部压力达到平衡的时间，影响使用体验；若直径大于1mm，可能会由于孔径较大，流体在流动时产生噪音，静音效果不好。由此，泄压孔271为圆孔，便于设计制造，降低制造的工艺难度，且将直径控制在上述范围内，使流体能够流进第一流体通道23的同时，增加流体流动的静音性。
在一些实施例中，泄压件27为塑胶件或软胶件29。由此，泄压件27为塑胶件或软胶件29，以使动铁芯12在与阀芯延伸部26止抵时能够具有缓冲和减振的作用，避免动铁芯12与阀芯延伸部26硬性接触，提高静音效果。
在一些实施例中，如图2所示，阀体10包括本体101和阀座102，本体101的远离动铁芯12的一端敞开，本体101上形成有进口15，阀座102设在本体101的远离动铁芯12的一端，阀座102和本体101之间共同限定出阀腔14，阀座102上形成有出口16。阀芯20设于阀座102和本体101限定的阀腔14内，且沿本体101的轴向可上下移动。在阀芯20向上移动以位于连通位置时，流体从进口15进入阀腔14后从出口16流出，可以通过调节阀芯20移动的位置实现对流体流量的调节。本体101为一体成型件，以使阀芯20与阀体10能够保持较高的同轴度。由此，本体101和阀座102的设置便于阀腔14的形成，且阀座102上形成有进口15，以使通过阀腔14实现进口15与出口16的连通，阀体10的结构较为简单，可以避免阀芯20在阀腔14内部移动时与本体101的侧壁产生摩擦。
在一些实施例中，结合图1、图2和图7，阀芯20包括第一阀芯段201和第二阀芯段202，第二阀芯段202连接在第一阀芯段201的远离出口16的一端，第二阀芯段202的横截面积大于第一阀芯段201的横截面积以在第一阀芯段201和第二阀芯段202之间形成台阶部28。第一弹性件21的一端与台阶部28止抵，第一弹性件21与第一阀芯段201的外周面彼此间隔开。第一弹性件21的一端与台阶部28止抵，第一弹性件21的另一端与阀座102止抵，第一弹性件21套设在第一阀芯段201外，且第一弹性件21与第一阀芯段201不接触，即第一弹性件21的横截面积大于第一阀芯段201的横截面积，第一弹性件21沿阀芯20轴向方向的横截面积相等，在阀芯 20相对阀座102上下移动时，第一阀芯段201与第一弹性件21不接触，避免阀芯20运动的过程中与第一弹性件21之间产生摩擦，降低异响的产生。由此，第一阀芯段201和第二阀芯段202之间形成台阶部28，便于第一弹性件21的安装和止抵，第一弹性件21的一端与台阶部28止抵，另一端可以与阀座102止抵或者与阀腔14的内侧壁止抵，可以根据设计的需求选择不同的装配方式和不同形状的第一弹性件21。
在一些实施例中，第一弹性件21与第一阀芯段201的外周面彼此间隔开。由此，间隔设置的第一弹性件21和第一阀芯段201，可以避免阀座102与第一弹性件21在相对运动的过程中产生摩擦，从而避免导致阀座102或者第一弹性件21磨损，延长第一阀芯段201和第一弹性件21的使用寿命。
在一些实施例中，如图2和图4所示，阀座102包括沿阀体10的轴向彼此相连的第一阀座配合部1021和阀座延伸部1022，阀座延伸部1022位于第一阀座配合部1021的远离阀芯20的一侧，阀座延伸部1022的横截面积大于第一阀座配合部1021的横截面积以在阀座延伸部1022和第一阀座配合部1021之间限定出第一台阶部1023，第一弹性件21的远离动铁芯12的一端与第一台阶部1023止抵。
阀座102具有朝向阀芯20延伸的第一阀座配合部1021，第一阀座配合部1021的外周面位于第一阀芯段201的外周面的远离阀芯20的中心轴线的一侧，第一弹性件21套设在第一阀座配合部1021的外周面上。第一弹性件21的一端套设在第一阀芯段201外，第一弹性件21的另一端套设在第一阀座配合部1021外并与第一台阶部1023止抵。阀座延伸部1022设于第一阀座配合部1021的外周侧，且低于第一阀座配合部1021邻近阀芯20一侧的表面，第一弹性件21的上述另一端与阀座延伸部1022止抵，便于第一弹性件21的安装和固定。由此，第一阀座配合部1021可以对第一弹性件21进行限位，避免第一弹性件21在阀芯20径向方向上的移动，以使第一阀芯段201和第一弹性件21能够沿着阀芯20的轴向方向运动，增加第一弹性件21上下运动过程中的稳定性，便于第一弹性件21的安装，避免运动过程中第一弹性件21与第一阀芯段201或者与阀腔14的内侧壁接触导致异响。
在一些实施例中，参照图1，第一弹性件21的内周面与第一阀座配合部1021的外周面止抵。由此，第一弹性件21的内周面与第一阀座配合部1021的外周面止抵，以便于实现第一弹性件21与第一阀座配合部1021紧配合，便于第一弹性件21的安装和限位，提高第一弹性件21的安装效率。
在一些实施例中，如图4所示，阀座延伸部1022包括沿阀芯20的轴向彼此相连的第一阀座延伸部10221和第二阀座延伸部10222，第二阀座延伸部10222位于第一阀座延伸部10221的远离第一阀座配合部1021的一侧，第一阀座延伸部10221配合在阀体10内，第一弹性件21的远离动铁芯12的一端与第一阀座延伸部10221止抵，第二阀座延伸部10222与阀体10的一端的端面止抵。也即，第一阀座延伸部10221和第二阀座延伸部10222沿阀芯20的径向方向设置，且第一阀座延伸部10221邻近第一阀座配合部1021设置，第一弹性件21的上述另一端与第一阀座延伸部10221的上表面止抵，第二阀座延伸部10222沿阀芯20的轴向方向低于第一阀座延伸部10221的邻近阀芯20一侧的表面，在阀座102与本体101装配时，本体101的一端与第二阀座延伸部10222止抵，第二阀座延伸部10222沿阀芯20的径向方向凸出第一阀座延伸部10221的外周侧的宽度等于本体101的侧壁的厚度。由此，第一阀座延伸部10221和第二阀座延伸部10222的设置，便于第一弹性件21的安装形成对第一弹性件21的限位，同时便于本体101与阀座102的安装，简化本体101与阀座102安装结构，提高本体101与阀座102的安装效率。
在一些实施例中，如图2和图4所示，阀座延伸部1022的远离第一阀座配合部1021的一侧设有第二阀座配合部1024，第二阀座配合部1024的外表面上设有第一密封件1025。第二阀座配合部1024与第一阀座配合部1021沿阀芯20的轴向方向设置，阀座延伸部1022设于第一阀座配合部1021和第二阀座配合部1024沿阀芯20径向方向的外侧，第一阀座配合部1021、第二阀座配合部1024和阀座延伸部1022可以通过一体成型工艺形成回转体结构，从而便于保证第一阀座配合部1021和第二阀座配合部1024的同轴度，可以简化阀座102的加工工艺流程，提高阀座102的加工精度，且便于阀座102小型化设计制造。第二阀座配合部1024的外表面上形成有密封 槽，密封槽沿阀芯20的周向延伸，密封槽内设有第一密封件1025，在阀座102与外部系统例如油路本体装配时，第一密封件1025可以增加安装的密封性。
在一些实施例中，如图2所示，本体101具有沿阀芯20的轴向彼此连通的第一腔室1011和第二腔室1012，第一腔室1011位于第二腔室1012的远离阀座102的一侧，第二腔室1012的横截面积大于第一腔室1011的横截面积，第二阀芯段202配合在第一腔室1011内，第一阀芯段201位于第二腔室1012内，进口15形成在第二腔室1012的侧壁上。第一腔室1011和第二腔室1012沿阀芯20的轴向设置，且第一腔室1011位于第二腔室1012远离阀座102的一端。在本体101与阀芯20配合时，第二阀芯段202与第一腔室1011配合，且沿第一腔室1011上下移动，第一腔室1011具有对阀芯20的导向作用。第一阀芯段201位于第二腔室1012内，第二腔室1012横截面积大于第一腔室1011的横截面积。在第二腔室1012的侧壁上设置进口15，便于进口15进入的流体位于阀腔14内，且可以使进口15邻近出口16设置，便于进口15与出口16的连通。由此，第一腔室1011和第二腔室1012横截面积不同，便于形成对第一阀芯段201的限位和导向，以使阀座102能够顺利在第一腔室1011内运动，第二腔室1012的横截面积较大，便于阀芯20止抵在出口16处且便于流体进入阀腔14内流向存储腔22。
在一些实施例中，如图6和图7所示，阀芯20的适于与阀座102止抵的表面形成为圆弧面。由此，阀芯20邻近出口16一端的表面为圆弧面，可以便于阀芯20与出口16的止抵，增加阀芯20与出口16处的密封性，增加阀芯20与出口16止抵的便捷性。
在一些实施例中，参照图3，本体101的邻近动铁芯12的一端的外周面具有沿本体101的周向排布的多个夹持面1013。多个夹持面1013沿阀芯20的周向间隔设置，便于本体101与外部设备例如扳手配合，实现本体101与外部油路的安装。由此，在本体101上设置夹持面1013，便于夹持本体101带动本体101转动实现本体101的安装。
可选地，第一弹性件21为弹簧。例如，第一弹性件21为圆线弹簧、扁线弹簧、圆柱弹簧和锥形弹簧中的一种。这里以圆锥弹簧举例。如图10所示，第一弹性件21沿阀芯20的轴向朝向远离阀座102的方向，第一弹性件21的横截面积逐渐减小，第一弹性件21的一端与台阶部28止抵，另一端与阀腔14的内侧壁止抵。在阀腔14内侧壁上设有支撑筋10121，支撑筋10121可以沿阀芯20的周向方向延伸，第一弹性件21的另一端与支撑筋10121止抵。支撑筋10121也可以为两个，两个支撑筋10121在阀芯20的周向方向间隔设置且沿阀芯20的径向方向相对。支撑筋10121设于进口15的上方，避免进入的流体直接与第一弹性件21接触，延长第一弹性件21的使用寿命。由此，第一弹性件21为弹簧可以使第一弹性件21具有良好的弹性能力，便于阀芯20从隔断位置移动到连通位置，同时，可以有效降低电磁阀100的生产成本，降低电磁阀100后期使用和维护的成本。
在一些实施例中，如图7所示，阀芯20的至少与出口16配合的部分设有软胶件29，软胶件29可以嵌入或者套设在阀芯20的邻近出口16的一侧的表面。由此，在阀芯20的与出口16配合的部分设置软胶件29，可以增加阀芯20与出口16止抵时的密封性，且可以避免阀芯20与出口16硬性接触产生异响，有利于提高电磁阀100使用过程中的静音性。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
在本公开的描述中，“第一特征”、“第二特征”可以包括一个或者更多个该特征。在本公开的描述中，“多个”的含义是两个或两个以上。在本公开的描述中，第一特征在第二特征“之上”或“之下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。在本公开的描述中，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。
尽管已经示出和描述了本公开的实施例，本领域的普通技术人员可以理解：在不脱离本公开的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本公开的范围由权利要求及其等同物限定。

Claims (26)

  1. 一种电磁阀(100)，其特征在于，包括：
    阀体(10)，所述阀体(10)上设有磁芯组件(30)，所述阀体(10)内限定出阀腔(14)，所述阀体(10)上形成有进口(15)和出口(16)，所述进口(15)与所述阀腔(14)连通；
    阀芯(20)，所述阀芯(20)设于所述阀腔(14)内且位于所述出口(16)和所述磁芯组件(30)之间，所述阀芯(20)可在磁芯组件(30)作用下朝向所述出口(16)的方向移动以封堵所述出口(16)，使得所述阀腔(14)与所述出口(16)的连通隔断，所述阀芯(20)内具有存储腔(22)和第一流体通道(23)，所述第一流体通道(23)与所述出口(16)连通，所述存储腔(22)在所述阀芯(20)封堵所述出口(16)时与所述阀腔(14)连通；以及
    第一弹性件(21)，所述第一弹性件(21)设于所述阀体(10)和所述阀芯(20)之间，所述阀芯(20)可在所述第一弹性件(21)的作用下朝向远离所述出口(16)的方向移动以打开所述出口(16)，使得所述出口(16)与所述阀腔(14)连通。
  2. 根据权利要求1所述的电磁阀(100)，其特征在于，
    所述阀芯(20)可在连通位置和隔断位置之间移动，所述阀芯(20)与所述阀体(10)之间具有至少一个第二流体通道(24)；
    当所述阀芯(20)位于所述隔断位置时，所述阀芯封堵所述出口(16)以隔断所述进口(15)和所述出口(16)的连通，所述存储腔(22)与所述阀腔(14)连通，外部流体适于通过所述进口(15)经所述第二流体通道(24)流向所述存储腔(22)；以及
    当所述阀芯(20)位于所述连通位置时，所述阀芯(20)与所述出口(16)分离以使所述进口(15)和所述出口(16)连通，所述存储腔(22)与所述阀腔(14)的连通被隔断。
  3. 根据权利要求1或2所述的电磁阀(100)，其特征在于，所述磁芯组件(30)包括：
    套筒(301)，所述套筒(301)固定于所述阀体(10)的远离所述阀芯(20)的一端；
    动铁芯(12)，至少部分所述动铁芯(12)设于所述套筒(301)内，所述动铁芯(12)可在所述套筒(301)内相对于所述阀体(10)移动；
    静铁芯(11)，所述静铁芯(11)设于所述套筒(301)内且位于所述动铁芯(12)的远离所述阀芯(20)的一侧；以及
    第二弹性件(13)，所述第二弹性件(13)设在所述静铁芯(11)和所述动铁芯(12)之间。
  4. 根据权利要求3所述的电磁阀(100)，其特征在于，所述阀芯(20)常保持在所述隔断位置；
    在所述阀芯(20)从所述隔断位置向所述连通位置移动的过程中，所述动铁芯(12)在所述静铁芯(11)的磁力作用下移动并与所述阀芯(20)分离，所述出口(16)通过所述第一流体通道(23)与所述存储腔(22)连通，且所述阀芯(20)在所述第一弹性件(21)的作用下朝向远离所述出口(16)的方向移动以打开所述出口(16)，使得所述出口(16)和所述阀腔(14)连通，以及
    在所述阀芯(20)从所述连通位置复位至所述隔断位置时，所述动铁芯(12)在所述第二弹性件(13)的弹力作用下与所述静铁芯(11)分离，且所述动铁芯(12)带动所述阀芯(20)朝向所述出口(16)移动，以使所述第一流体通道(23)与所述存储腔(22)的连通被隔断。
  5. 根据权利要求3或4所述的电磁阀(100)，其特征在于，
    当所述阀芯(20)位于所述隔断位置时，所述第二弹性件(13)通过所述动铁芯(12)作用于所述阀芯(20)，使所述阀芯(20)封堵所述出口(16)以隔断所述进口(15)和所述出口(16)的连通；以及
    当所述阀芯(20)位于所述连通位置时，所述阀芯(20)在所述第一弹性件(21)的作用下与所述出口(16) 分离，以使所述进口(15)和所述出口(16)连通，
    其中，所述第二弹性件(13)的弹力大于所述第一弹性件(21)的弹力。
  6. 根据权利要求2所述的电磁阀(100)，其特征在于，所述存储腔(22)的远离所述出口(16)的一端敞开；
    所述第二流体通道(24)包括：
    至少一个第一流道(241)，所述第一流道(241)形成在所述阀芯(20)的外侧壁和所述阀体(10)的内侧壁中的至少一个上；以及
    至少一个第二流道，所述第二流道由所述阀芯(20)的远离所述出口(16)的一端与所述阀体(10)的远离所述出口(16)的内壁之间共同限定出，所述第一流道(241)适于通过所述第二流道与所述存储腔(22)连通。
  7. 根据权利要求6所述的电磁阀(100)，其特征在于，所述第一流道(241)沿所述阀芯(20)的轴向延伸，且沿从所述阀芯(20)的邻近所述出口(16)的一端朝向所述阀芯(20)的远离所述出口(16)的一端的方向，所述第一流道(241)的横截面积逐渐减小。
  8. 根据权利要求7所述的电磁阀(100)，其特征在于，所述第一流道(241)为形成在所述阀芯(20)的外侧壁上的凹槽；
    沿从所述阀芯(20)的邻近所述出口(16)的一端朝向所述阀芯(20)的远离所述出口(16)的一端的方向，所述第一流道(241)的两个侧壁之间的距离逐渐减小；和/或
    沿从所述阀芯(20)的邻近所述出口(16)的一端朝向所述阀芯(20)的远离所述出口(16)的一端的方向，所述第一流道(241)的底壁朝向远离所述阀芯(20)的中心轴线的方向倾斜延伸。
  9. 根据权利要求6-8中任一项所述的电磁阀(100)，其特征在于，还包括：
    至少一个第一凸筋(25)，所述第一凸筋(25)设在所述阀芯(20)的远离所述出口(16)的一端且沿所述阀芯(20)的周向延伸，所述第一凸筋(25)上形成有沿所述阀芯(20)的径向贯穿所述第一凸筋(25)的两侧表面的连通通道(251)，所述存储腔(22)通过所述连通通道(251)与所述进口(15)连通和/或，所述第一凸筋(25)的宽度小于所述阀芯(20)的远离所述出口(16)的所述一端的壁厚，所述第一凸筋(25)的邻近所述阀芯(20)的中心轴线的表面与所述阀芯(20)的内壁面平齐。
  10. 根据权利要求9所述的电磁阀(100)，其特征在于，所述第一流道(241)和所述连通通道(251)分别为多个，多个所述第一流道(241)和多个所述连通通道(251)分别沿所述阀芯(20)的周向间隔设置和/或，所述第一流道(241)的数量大于所述连通通道(251)的数量。
  11. 根据权利要求3所述的电磁阀(100)，其特征在于，还包括：
    阀芯延伸部(26)，所述阀芯延伸部(26)设在所述存储腔(22)内且沿所述阀芯(20)的轴向延伸，所述阀芯延伸部(26)内限定出所述第一流体通道(23)，所述第一流体通道(23)贯穿所述阀芯延伸部(26)的两端以适于分别与所述存储腔(22)和所述出口(16)连通，所述动铁芯(12)与所述阀芯延伸部(26)的邻近所述动铁芯(12)的一端可分离地配合。
  12. 根据权利要求11所述的电磁阀(100)，其特征在于，所述阀芯延伸部(26)的邻近所述动铁芯(12)的所述一端设有泄压件(27)，所述泄压件(27)上形成有至少一个泄压孔(271)，
    当所述动铁芯(12)与所述阀芯延伸部(26)的邻近所述动铁芯(12)的所述一端分离时所述存储腔(22)通过所述泄压孔(271)与所述第一流体通道(23)连通。
  13. 根据权利要求12所述的电磁阀(100)，其特征在于，所述泄压件(27)为泄压盖，所述泄压件(27)盖设在所述阀芯延伸部(26)的邻近所述动铁芯(12)的所述一端。
  14. 根据权利要求13所述的电磁阀(100)，其特征在于，所述泄压件(27)的内侧壁上设有沿所述泄压件(27)的周向间隔设置的多个定位筋(272)；或
    所述泄压件(27)与所述阀芯延伸部(26)的邻近所述动铁芯(12)的所述一端过盈配合。
  15. 根据权利要求12-14中任一项所述的电磁阀(100)，其特征在于，所述泄压件(27)包括：
    第一泄压部(273)，所述第一泄压部(273)设在所述阀芯延伸部(26)的邻近所述动铁芯(12)的所述一端的端面上；以及
    第二泄压部(274)，所述第二泄压部(274)连接在所述第一泄压部(273)的远离所述动铁芯(12)的一侧，所述第二泄压部(274)配合在所述第一流体通道(23)内，所述泄压孔(271)贯穿所述第一泄压部(273)和所述第二泄压部(274)。
  16. 根据权利要求12-15中任一项所述的电磁阀(100)，其特征在于，所述泄压孔(271)为多个，多个所述泄压孔(271)在所述泄压件(27)上彼此间隔设置，所述泄压孔(271)为圆孔，所述泄压孔(271)的直径为d，其中，所述d满足：0.4mm≤d≤1mm。
  17. 根据权利要求1-16中任一项所述的电磁阀(100)，其特征在于，所述阀体(10)包括：
    本体(101)，所述本体(101)的远离所述磁芯组件(30)的一端敞开，所述本体(101)上形成有所述进口(15)；以及
    阀座(102)，所述阀座(102)设在所述本体(101)的远离所述磁芯组件(30)的所述一端，所述阀座(102)和所述本体(101)之间共同限定出所述阀腔(14)，所述阀座上形成有所述出口(16)。
  18. 根据权利要求17所述的电磁阀(100)，其特征在于，所述阀芯(20)包括：
    第一阀芯段(201)；以及
    第二阀芯段(202)，所述第二阀芯段(202)连接在所述第一阀芯段(201)的远离所述出口(16)的一端，所述第二阀芯段(202)的横截面积大于所述第一阀芯段(201)的横截面积以在所述第一阀芯段(201)和所述第二阀芯段(202)之间形成台阶部(28)，所述第一弹性件(21)的一端与所述台阶部(28)止抵。
  19. 根据权利要求17或18所述的电磁阀(100)，其特征在于，所述阀座(102)包括：
    第一阀座配合部(1021)；和
    阀座延伸部(1022)，所述阀座延伸部(1022)和所述第一阀座配合部(1021)沿所述阀体(10)的轴向彼此相连，所述阀座延伸部(1022)位于所述第一阀座配合部(1021)的远离所述阀芯(20)的一侧，所述阀座延伸部(1022)的横截面积大于所述第一阀座配合部(1021)的横截面积以在所述阀座延伸部(1022)和所述第一阀座配合部(1021)之间限定出第一台阶部(1023)，所述第一弹性件(21)的邻近所述出口(16)的一端与所述第一台阶部(1023)止抵，
    其中，所述第一弹性件(21)的内周面与所述第一阀座配合部(1021)的外周面止抵。
  20. 根据权利要求19所述的电磁阀(100)，其特征在于，所述阀座延伸部(1022)包括：
    第一阀座延伸部(10221)；以及
    第二阀座延伸部(10222)，所述第二阀座延伸部(10222)和所述第一阀座延伸部(10221)沿所述阀芯(20)的轴向彼此相连，所述第二阀座延伸部(10222)位于所述第一阀座延伸部(10221)的远离所述第一阀座配合部(1021)的一侧，所述第一阀座延伸部(10221)配合在所述阀体(10)内，所述第一弹性件(21)的邻近所述出口(16)的一端与所述第一阀座延伸部(10221)止抵，所述第二阀座延伸部(10222)与所述阀体(10)的所述一端的端面止抵。
  21. 根据权利要求19或20所述的电磁阀(100)，其特征在于，所述阀座延伸部(1022)的远离所述第一阀座配合部(1021)的一侧设有第二阀座配合部(1024)，所述第二阀座配合部(1024)的外表面上设有第一密封件(1025)。
  22. 根据权利要求17-21中任一项所述的电磁阀(100)，其特征在于，所述本体(101)具有沿所述阀芯(20)的轴向彼此连通的第一腔室(1011)和第二腔室(1012)，所述第一腔室(1011)位于所述第二腔室(1012)的 远离所述阀座的一侧，所述第二腔室(1012)的横截面积大于所述第一腔室(1011)的横截面积，所述第二阀芯段(202)配合在所述第一腔室(1011)内，所述第一阀芯段(201)位于所述第二腔室(1012)内，所述进口(15)形成在所述第二腔室(1012)的侧壁上。
  23. 根据权利要求17所述的电磁阀(100)，其特征在于，所述阀芯的适于与所述阀座止抵的表面形成为圆弧面。
  24. 根据权利要求17所述的电磁阀(100)，其特征在于，所述本体(101)的远离所述出口(16)的一端的外周面具有沿所述本体(101)的周向排布的多个夹持面(1013)。
  25. 根据权利要求17所述的电磁阀(100)，其特征在于，所述本体(101)为一体成型件，和/或，所述阀座为回转体结构。
  26. 根据权利要求1-25中任一项所述的电磁阀(100)，其特征在于，所述阀芯的至少与所述出口(16)配合的部分设有软胶件(29)。
PCT/CN2023/091127 2022-09-30 2023-04-27 电磁阀 WO2024066337A1 (zh)

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CN108374928A (zh) * 2018-05-07 2018-08-07 金华市德诺电器有限公司 一种电磁阀
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