WO2022199252A1 - 一种电磁阀及电磁阀组件 - Google Patents

一种电磁阀及电磁阀组件 Download PDF

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Publication number
WO2022199252A1
WO2022199252A1 PCT/CN2022/074848 CN2022074848W WO2022199252A1 WO 2022199252 A1 WO2022199252 A1 WO 2022199252A1 CN 2022074848 W CN2022074848 W CN 2022074848W WO 2022199252 A1 WO2022199252 A1 WO 2022199252A1
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WO
WIPO (PCT)
Prior art keywords
elastic member
valve
solenoid valve
groove
blocking component
Prior art date
Application number
PCT/CN2022/074848
Other languages
English (en)
French (fr)
Inventor
冯忠波
张文嵘
王傅钢
李浙鹏
Original Assignee
浙江盾安人工环境股份有限公司
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 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Priority to JP2023549834A priority Critical patent/JP2024510879A/ja
Priority to KR1020237036043A priority patent/KR20230159556A/ko
Priority to EP22773914.1A priority patent/EP4311965A1/en
Publication of WO2022199252A1 publication Critical patent/WO2022199252A1/zh
Priority to US18/369,178 priority patent/US20240003459A1/en

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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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
    • F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
    • F16K31/408—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston the discharge being effected through the piston and being blockable by an electrically-actuated member making contact with the piston
    • 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
    • F16K31/0644—One-way valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • 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
    • F16K1/42—Valve seats
    • 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
    • F16K1/46—Attachment of sealing rings
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor

Definitions

  • the present application relates to the field of valve devices, and in particular, to a solenoid valve and a solenoid valve assembly.
  • the solenoid valve in the prior art has a complex structure, and cannot be quickly assembled with the air conditioning pipeline or module components, and the installation efficiency is low; meanwhile, the solenoid valve in the prior art is provided with a spring between the bottom of the valve body and the blocking member , through the elastic force of the spring to drive the blocking member to move to open the valve port to realize the opening of the valve.
  • the spring in the prior art forms an integral structure with the valve body in the form of riveting, so the assembly process is complicated, and the spring cannot be disassembled in the later stage.
  • the technical problem is that the processing difficulty of the valve body increases and the manufacturing cost increases; in the prior art, the spring is also limited by additionally setting a limiter, but the additional limiter also increases the assembly steps, and during the operation of the solenoid valve, The limiter may move relative to the valve body, resulting in an instable limit to the spring and a hidden danger.
  • a solenoid valve includes a valve body and a blocking component; the valve body has a first installation cavity and a valve port, and the blocking component is accommodated in the first installation cavity for opening/closing the valve
  • the solenoid valve further includes a first elastic member, an end of the first installation cavity close to the valve port is provided with a limiting portion integrally formed with the valve body, and the first elastic member is sleeved on the seal
  • the blocking assembly one end of the first elastic member abuts against the blocking member, the other end against the valve body, and the first elastic member abuts against the outer surface of one end of the valve body and the valve body.
  • the limiting portion abuts against.
  • the end of the first elastic member away from the blocking component is not limited, when the first elastic member reciprocates along the axis of the valve body, it may be offset or side-bent, and it cannot always follow the valve body.
  • the axial direction of the plug moves linearly, causing the direction of the driving force to the plugging assembly to be offset, affecting the sealing effect of the plugging assembly on the valve port.
  • the first elastic member is limited and positioned by setting the limit portion, so as to prevent the radial movement of the first elastic member from offsetting or side bending, and ensure that the first elastic member always moves linearly along the axis direction of the valve body;
  • the limiting part exerts a frictional force on the end of the first elastic member, which is beneficial to prevent the end of the first elastic member from being entangled with the middle region of the first elastic member when the first elastic member is reciprocatingly compressed and stretched;
  • the position part and the valve body are integrally formed, which avoids increasing the assembly steps of the solenoid valve, which is beneficial to improve the overall assembly efficiency of the solenoid valve; at the same time, it can also avoid the relative displacement of the limit part and the valve body during use, which affects the impact on the first elastic member. Limit effect.
  • the limiting portion is a protrusion disposed in the first installation cavity and extending toward the axial direction of the blocking component, and the outer side surface of the first elastic member is connected to the protrusion. abutting the side walls.
  • the limiting part is a protrusion
  • the structure is simple, and the processing of the valve body is difficult.
  • the cavity bottom of the first installation cavity close to one end of the valve port is recessed to form a limiting groove, the groove wall of the limiting groove forms the limiting portion, and the first elastic member The end close to the valve port is accommodated in the limiting groove, and the outer side surface of the first elastic member is in contact with the side wall of the limiting groove.
  • the limiting portion is a limiting groove formed by a depression in the cavity bottom of the first installation cavity, which has a simple structure, is easy to be processed and formed, reduces the processing difficulty of the valve body, and is beneficial to reduce the manufacturing cost of the solenoid valve.
  • one end of the first elastic member close to the valve port has a first inelastic segment.
  • the inelastic segment if the inelastic segment is provided on the first elastic member, the inelastic segment cannot be stretched or extended, thereby reducing the possibility of entanglement with the middle portion of the first elastic member.
  • the limiting portion is a protrusion or a limiting groove; the protrusion is disposed in the first installation cavity and extends toward the axial direction of the blocking component; the first installation cavity The cavity bottom of the inner cavity close to one end of the valve port is recessed and forms the limiting groove; the height of the protrusion or the depth of the limiting groove is equal to or less than the height of the first inelastic segment.
  • the height of the protrusion or the depth of the limiting groove is equal to or less than the height of the first inelastic segment, which is beneficial to prevent the height of the protrusion or the depth of the limiting groove from being too large and thus affecting the first elasticity.
  • the amplitude of the reciprocating compression or expansion of the component thereby affecting the driving force of the first elastic segment to the blocking component, and affecting the opening of the valve.
  • the first elastic member is a spring
  • one end of the spring close to the valve port has at least two coils of the spring and tightly forms the first inelastic segment.
  • the height of the protrusion or the depth of the limiting groove is equal to or less than the sum of the wire diameters of the two coils of the spring that are tightened together.
  • the height of the protrusion or the depth of the limiting groove is equal to or smaller than the sum of the wire diameters of the two coils of springs that are tightened. Avoid the height of the protrusion or the depth of the limit groove being too large to affect the reciprocating compression or extension of the spring and affect the valve opening efficiency.
  • one end of the first elastic member away from the valve port has a second inelastic section, and the second inelastic section abuts against the end of the blocking component away from the valve port .
  • the provision of the second inelastic segment is beneficial to prevent the end of the first elastic member away from the valve port from being entangled with the middle region of the first elastic member.
  • a groove portion is provided on the end of the blocking component that is in contact with the first elastic member, the second non-elastic segment is accommodated in the groove portion, and the second non-elastic segment is accommodated in the groove portion.
  • the outer side surface of the elastic segment abuts against the groove wall on the side of the groove portion close to the first installation cavity.
  • the groove portion is provided, so that the second inelastic segment is accommodated in the groove portion, and plays a role in limiting and positioning the first elastic member.
  • the depth of the groove is equal to or less than the height of the second inelastic segment.
  • the depth of the groove is equal to or less than the height of the second inelastic segment, so as to prevent the groove wall from being too deep to prevent the first elastic member from compressing or extending.
  • the first elastic member is a spring
  • one end of the spring abutting against the blocking component has at least two circles of the spring and tightly forms the second inelastic section, and the The depth of the groove portion is equal to or less than the sum of the wire diameters of the two coils of the spring.
  • the diameter of the inner wall cavity of the valve body is larger than the outer diameter of the first elastic member.
  • the diameter of the cavity of the inner wall of the valve seat is larger than the outer diameter of the first elastic member, which can effectively avoid friction between the cavity wall and the first elastic member, and avoid affecting the contraction or expansion speed of the first elastic member.
  • a mounting base is included in any one of the solenoid valves described above; the solenoid valve is detachably connected to the mounting base.
  • the solenoid valve is detachably connected to the installation base, which simplifies the assembly and disassembly of the solenoid valve and the installation platform, realizes quick connection or separation of the solenoid valve and the installation base, and improves the installation efficiency.
  • a mounting groove is provided at one end of the mounting base away from the valve port, a sealing member is provided in the mounting groove, and the mounting base and the valve body are sealingly connected through the sealing member.
  • the first elastic member is limited and positioned by setting the limit portion, so as to prevent the radial movement of the first elastic member from offsetting or side bending, and ensure that the first elastic member always moves linearly along the axis direction of the valve body;
  • the limiting part exerts a frictional force on the end of the first elastic member, which is beneficial to prevent the end of the first elastic member from being entangled with the middle region of the first elastic member when the first elastic member is reciprocatingly compressed and stretched;
  • the position part and the valve body are integrally formed, which avoids increasing the assembly steps of the solenoid valve, which is beneficial to improve the overall assembly efficiency of the solenoid valve; at the same time, it can also avoid the relative displacement of the limit part and the valve body during use, which affects the impact on the first elastic member. Limit effect.
  • FIG. 1 is a schematic diagram of the assembly of a solenoid valve and an installation base in an embodiment of the application.
  • FIG. 2 is a longitudinal sectional view of FIG. 1 .
  • FIG. 3 is a cross-sectional view of the solenoid valve in the application.
  • Electromagnetic drive Component 41, sleeve; 42, electromagnetic coil; 43, stator; 44, mover; 45, second installation cavity; 46, valve needle; 47, second elastic part; 48, valve needle elastic part; 49, guide Magnetic frame; 5. Installation base; 51. Installation groove; 52. Second step; 6. Seal.
  • a component when referred to as being “mounted on” another component, it can be directly mounted on the other component or there may also be an intervening component.
  • a component When a component is considered to be “set on” another component, it may be directly set on the other component or there may be a co-existing centered component.
  • a component When a component is said to be “fixed” to another component, it may be directly fixed to the other component or there may also be an intervening component.
  • the solenoid valve 100 includes a valve body 1 and a blocking component 2 ; the solenoid valve 100 is used to control the on/off of the medium in the pipeline or the flow rate of the medium. size.
  • the valve body 1 has a first installation cavity 11, and the first installation cavity 11 has a valve port 12 that communicates with the external environment; the blocking component 2 is accommodated in the first installation cavity 11 for opening/closing the valve port 12, and sealing
  • the plug assembly 2 is in sealing and sliding connection with the cavity wall of the first installation cavity 11 .
  • the solenoid valve 100 further includes a first elastic member 3 , the first elastic member 3 can be contracted or extended along the axis direction of the solenoid valve 100 , when the first elastic member 3 is extended and expanded, the blocking component 2 is driven to move away from the valve port 12 , realize the opening of the valve; one end of the first installation cavity 11 close to the valve port 12 is provided with a limiting portion 13 integrally formed with the valve body 1 , the first elastic member 3 is sleeved on the blocking assembly 2 , and one end of the first elastic member 3 The other end abuts against the valve body 1 , and the first elastic member 3 abuts against the outer side surface of one end of the valve body 1 against the limiting portion 13 .
  • the spring in the prior art forms an integral structure with the valve body 1 in the form of riveting, the assembly process is complicated, the spring cannot be disassembled in the later stage, the processing difficulty of the valve body 1 is increased, and the manufacturing cost is increased.
  • the additional limiter also increases the assembly steps, and during the operation of the solenoid valve 100, the limiter may move relative to the valve body 1, which may cause damage to the spring. The limit is not stable enough and there are hidden dangers.
  • the first elastic member 3 can be limited and positioned, so as to prevent the radial movement of the first elastic member 3 from causing deviation or side bending, and ensure the first elastic member 3.
  • the element 3 always moves linearly along the axis of the valve body 1; at the same time, the limiting portion 13 exerts a frictional force on the end of the first elastic element 3, which is beneficial to prevent the end of the first elastic element 3 from colliding with the end of the first elastic element 3 during reciprocating compression and extension.
  • the middle area of the first elastic member 3 is entangled; and in the present invention, the limiting portion 13 is integrally formed with the valve body 1, which avoids increasing the assembly steps of the solenoid valve 100, and is beneficial to improve the overall assembly efficiency of the solenoid valve 100; at the same time It can also avoid the relative displacement of the limiting portion 13 and the valve body 1 during use, which affects the limiting effect of the first elastic member 3 .
  • the limiting portion 13 is a protrusion disposed in the first installation cavity 11 and extending toward the axial direction of the blocking component 2 .
  • the outer side surface of the first elastic member 3 is connected to the protrusion. abutting the side walls.
  • the protrusion can be arranged on the bottom of the first installation cavity 11, or the protrusion can be arranged on the side wall of the first installation cavity 11.
  • the protrusion has a simple structure, is easy to be processed and formed, reduces the processing difficulty of the valve body 1, and is beneficial to reduce the electromagnetic valve. 100 manufacturing cost.
  • the specific structure of the limiting portion 13 is not limited to the above or the drawings, for example,
  • the cavity bottom of the first installation cavity 11 near the valve port 12 is recessed and forms a limiting groove
  • the groove wall of the limiting groove forms a limiting portion 13
  • the first elastic member 3 is far away from the blocking component 2
  • One end of the first elastic member 3 is accommodated in the limiting slot, and the outer side surface of the first elastic member 3 is in contact with the side wall of the limiting slot.
  • one end of the first elastic member 3 close to the valve port 12 has a first inelastic segment 31 .
  • the first inelastic segment 31 cannot be stretched or stretched, so as to reduce the possibility of entanglement with the middle of the first elastic member 3.
  • the height of the protrusion or the depth of the limiting groove is equal to or less than the height of the first inelastic segment 31 , thereby helping to prevent the height of the protrusion or the depth of the limiting groove from being too large and thus affecting the elasticity of the first elastic member 3 .
  • the amplitude of the reciprocating compression or extension affects the magnitude of the driving force of the first inelastic segment 31 to the blocking assembly 2 and affects the opening of the valve.
  • the first elastic member 3 is a spring, and the end of the spring away from the blocking component 2 has at least two coils of springs and tightly forms the first inelastic section 31. It can also be understood that the springs spirally form multiple coils.
  • the first inelastic segment 31 is formed by at least two loops, and the loops after the tightening cannot move relative to each other, so the formed first inelastic segment 31 cannot be compressed or stretched.
  • the first elastic member 3 is not limited to a spring, but can also be other elastic elements.
  • the height of the bulge or the depth of the limit groove is equal to or less than the sum of the wire diameters of the two springs that are tightened; avoid the height of the bulge or the depth of the limit groove being too large to affect the reciprocating compression or expansion of the spring
  • the amplitude affects the valve opening efficiency.
  • one end of the first elastic member 3 away from the valve port 12 has a second inelastic section 32 , and the second inelastic section 32 is connected to the end of the blocking component 2 away from the valve port 12 . one end against. It can be understood that the provision of the second inelastic segment 32 is beneficial to prevent the end of the first elastic member 3 away from the valve port 12 from being entangled with the middle region of the first elastic member 3 .
  • a groove portion 21 is provided on the end of the blocking assembly 2 that is in contact with the first elastic member 3, the second inelastic segment 32 is accommodated in the groove portion 21, and the outer side surface of the second inelastic segment 32 is connected to the groove portion 21.
  • the groove part 21 abuts against the groove wall on the side close to the first installation cavity 11 .
  • the groove portion 21 is provided so that the second inelastic segment 32 is accommodated in the groove portion 21, and combined with the limiting portion 13, the limiting and positioning of the first elastic member 3 are further strengthened to ensure the movement of the first elastic member 3. process stability.
  • the depth of the groove portion 21 is equal to or less than the height of the second inelastic segment 32, so as to prevent the groove wall from being too deep to prevent the first elastic member 3 from compressing or extending.
  • the first elastic member 3 is a spring
  • the end of the spring abutting against the blocking component 2 has at least two springs and forms a second inelastic section 32
  • the depth of the groove portion 21 is equal to or less than The sum of the wire diameters of the two tight springs.
  • the diameter of the cavity of the inner wall of the valve body 1 is larger than the outer diameter of the first elastic member 3 , so as to avoid friction between the cavity wall and the first elastic member 3 to generate friction, and to avoid affecting the contraction or extension of the first elastic member 3 . speed.
  • the present application also provides a solenoid valve assembly 200 , which includes any one of the solenoid valves 100 described above on the installation base 5 ; the solenoid valve 100 is detachably connected to the installation base 5 , which simplifies the assembly and disassembly of the solenoid valve 100 and the installation base 5 . , to realize the quick connection or separation of the solenoid valve 100 and the installation base 5 and improve the installation efficiency.
  • the valve body 1 at least includes a valve seat 14 .
  • the valve seat 14 is provided with a first installation cavity 11 .
  • the clamping portion 16 and the connecting portion 17 are provided with a first threaded portion 171 on the outer side wall of the connecting portion 17 , and a second threaded portion (not shown in the figure) is provided in the corresponding mounting base 5 .
  • the two threaded parts are connected to realize the quick assembly of the valve seat 14 and the mounting base 5 .
  • the specific structural form of the mounting base 5 is not limited to the form described in the text or shown in the figures, and can also be any intermediate piece for connecting with the air conditioning pipeline or the air conditioning assembly.
  • the outer diameter of the clamping portion 16 is larger than the outer diameter of the connecting portion 17 , and the lower end surface of the clamping portion 16 is in contact with the upper end surface of the mounting base 5 .
  • one end of the mounting base 5 away from the valve port 12 is provided with a mounting groove 51.
  • the mounting groove 51 is opened on the end face of the mounting base 5 opposite to the valve seat 14, and a sealing member 6 is arranged in the mounting groove 51, and the mounting base 5 and the valve seat 14 are sealingly connected through the sealing member 6 , which is beneficial to strengthen the sealing performance between the installation base 5 and the valve seat 14 .
  • the valve seat 14 is provided with an inflow channel 18 and an outflow channel 19 that communicate with the valve port 12 and the first installation cavity 11 , and the opening and closing of the valve port 12 can control the communication between the inflow channel 18 and the outflow channel 19 or closed.
  • One end of the valve seat 14 away from the clamping portion 16 extends axially to form an extension portion 141 , the outer diameter of the extension portion 141 is smaller than the outer diameter of the valve seat 14 at the inflow passage 18 , the inflow passage 18 of the valve seat 14 and the extension portion 141
  • a first step 142 is formed at the junction of the mounting base 5
  • a second step 52 is provided on the inner side wall of the mounting base 5
  • the first step 142 is in contact with the second step 52 .
  • the outer part of the extension part 141 is provided with a first groove 143 for installing the seal 6 , and the first groove 143 is arranged along the outer circumference of the extension part 141 .
  • the clamping portion 16 is provided with at least two clamping planes, and the external installation tool cooperates with the mounting planes to realize the connection and tightening of the valve seat 14 and the installation base 5 , thereby improving the installation efficiency.
  • the clamping portion 16 of the valve seat 14 is provided with a plurality of clamping planes, for example, six clamping planes, and the plurality of clamping planes are evenly distributed around the circumference of the valve seat 14 .
  • the number of clamping planes is not limited.
  • the valve body 1 further includes a valve cover 15 , the outer side wall of the valve cover 15 is sealingly connected with the inner wall side of the first installation cavity 11 , and the valve cover 15 is not opposite to the valve seat 14 . slide.
  • the end of the valve cover 15 close to the valve port 12 is provided with a cavity 151 for accommodating the blocking component 2 .
  • the solenoid valve 100 further includes an electromagnetic drive assembly 4 , which is used to drive the blocking assembly 2 to reciprocate along the axis direction of the valve body 1 to realize the opening/closing of the valve port 12 .
  • the electromagnetic drive assembly 4 includes an electromagnetic unit, a valve needle unit, and a magnetic guide frame 49 .
  • the magnetic guide frame 49 is disposed on the valve seat 14 , and the magnetic guide frame 49 is used to limit and position the electromagnetic unit.
  • the electromagnetic unit When the electromagnetic unit is energized, the valve needle unit is driven to move away from the blocking component 2 to realize valve opening.
  • the blocking component 2 moves toward the valve port 12 until it is in close contact with the valve port 12 and seals the valve port 12 .
  • the electromagnetic unit includes an electromagnetic coil 42, a fixed stator 43 relative to the electromagnetic coil 42, and a mover 44 that can move axially along the valve seat 14.
  • the electromagnetic coil 42 is sleeved outside the stator 43 and the mover 44, wherein the electromagnetic coil 42 It is fixed in the magnetic guide frame 49 .
  • a second elastic member 47 is also arranged between the stator 43 and the mover 44, and the mover 44 is provided with a second installation cavity 45 which penetrates through in the axial direction, and the second elastic member 47 is at least partially movable in the second installation cavity. Inside 45 , the elastic recovery of the second elastic member 47 can drive the valve needle unit to move toward the blocking component 2 , and push the blocking component 2 to move toward the valve port 12 to close the valve port 12 .
  • the electromagnetic drive assembly 4 also includes a sleeve 41, and one end of the sleeve 41 close to the valve seat 14 extends out of the magnetic guide frame 49 and is fixedly connected with the valve cover 15;
  • the sub 44 is movably disposed inside the sleeve 41 , and the electromagnetic coil 42 is sleeved outside the sleeve 41 .
  • the valve needle unit includes a valve needle 46 and a valve needle elastic member 48; the valve needle 46 is movably arranged in the second installation cavity 45, one end of the valve needle elastic member 48 abuts against one end of the valve needle 46 close to the stator 43, and the other end is in contact with the stator 43.
  • One end of the second installation cavity 45 close to the valve seat 14 abuts against.
  • a pilot valve seat with a pilot valve port 22 is provided at one end of the blocking assembly 2 close to the valve needle 46 , and the valve needle 46 opens and closes the pilot valve port 22 under the driving of the electromagnetic unit.
  • a pilot hole 23 penetrating in the axial direction is provided in the center of the blocking assembly 2 , and the pilot hole 23 communicates with the pilot valve port 22 .
  • the pilot valve port 22 and the pilot hole 23 are provided, so that when the blocking component 2 opens or closes the valve, there is a pressure differential force on both sides of the blocking component 2, which reduces the difficulty of opening or closing the valve.
  • the pilot valve port 22 opens before the valve port 12.
  • the side chamber of the blocking component 2 close to the valve needle 46 passes through the pilot valve port 22 and the pilot valve.
  • the pressure of the hole 23 is relieved, and a pressure difference is formed between the two ends of the blocking component 2.
  • the fluid pressure pushes the blocking component 2 to move upward to open the valve port 12; when the power is off, the second elastic Under the action of the gravity of the valve needle 47 and the valve needle itself, the valve needle 46 is reset, the pilot valve port 22 is closed, the blocking component 2 moves downward, and the valve port 12 is closed; the pressure of the chamber on the side of the blocking component 2 close to the valve port increases , the fluid pressure pressurizes the blocking component 2, and the sealing is better.
  • the solenoid valve 100 (taking the normally closed solenoid valve as an example) realizes the valve opening process as follows: the solenoid coil 42 is energized, the mover 44 moves toward the stator 43, and the mover 44 overcomes the elastic force of the second elastic member 47 and moves upward, The valve needle 46 is driven to move away from the valve seat 14. At this time, the mover 44 needs to overcome the force of the second elastic member 47 to move upward. After the pilot valve port 22 is opened to release the pressure, the blocking component 2 is pushed and moved by the first elastic member 3.
  • the solenoid 42 When the valve is closed, the solenoid 42 is de-energized, and the mover 44 is not subject to the magnetic attraction force of the stator 43, so the mover 44 drives the valve needle 46 together under the elastic force of the second elastic member 47 and the valve needle elastic member 48 and its own gravity. Downward movement, the valve port 12 is closed.

Abstract

一种电磁阀（100）及电磁阀组件（200），电磁阀（100）包括阀体（1）、封堵组件（2）、第一弹性件（3），第一安装腔（11）靠近阀口（12）的一端设置有与阀体（1）一体成型的限位部（13），第一弹性件（3）套设于封堵组件（2）上，第一弹性件（3）一端抵靠于封堵组件（2），另一端抵靠于阀体（1），且第一弹性件（3）抵靠于阀体（1）一端的外侧面与限位部（13）抵靠。限位部（13）与阀体（1）一体成型有利于提高电磁阀（100）的组装效率和对第一弹性件（3）的限位效果。

Description

一种电磁阀及电磁阀组件
相关申请
本申请要求2021年3月23日申请的，申请号为202120593934.6，发明名称为“一种电磁阀及电磁阀组件”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
本申请涉及阀装置领域，特别是涉及一种电磁阀及电磁阀组件。
背景技术
现有技术中的电磁阀结构复杂，且无法与空调管路或模块组件实现快速组装，安装效率较低；同时现有技术中的电磁阀，在阀体的底部与封堵部件之间设置弹簧，通过弹簧的弹力驱动封堵部件运动以打开阀口，实现开阀，然而现有技术中的弹簧由于采用铆接的形式与阀体组成一体结构，因此会造成组装工艺复杂，弹簧后期无法拆卸、阀体的加工难度提高、制造成本增加的技术问题；现有技术中也有通过另外设置有限位件对弹簧进行限位，然而额外设置限位件同样增加组装步骤，且在电磁阀作业过程中，限位件可能会相对于阀体相对移动，导致对弹簧的限位不够稳定，存在隐患。
发明内容
基于此，有必要针对上述技术问题，提供一种电磁阀及电磁阀组件。
为达到上述目的，本申请提供的技术方案如下：
一种电磁阀，包括阀体、及封堵组件；所述阀体内具有第一安装腔以及阀口，所述封堵组件收容于所述第一安装腔内，用于启/闭所述阀口；所述电磁阀还包括第一弹性件，所述第一安装腔靠近所述阀口的一端设置有与所述阀体一体成型的限位部，所述第一弹性件套设于封堵组件上，所述第一弹性 件一端抵靠于所述封堵组件，另一端抵靠于所述阀体，且所述第一弹性件抵靠于所述阀体一端的外侧面与所述限位部抵靠。
可以理解的是，若未对第一弹性件远离封堵组件的一端进行限位，第一弹性件沿阀体的轴线方向往复移动时，有可能产生偏移或侧弯，无法始终沿阀体的轴线方向做直线运动，导致对封堵组件的驱动力的方向发生偏移，影响封堵组件对阀口的密封效果。本申请通过设置限位部对第一弹性件进行限位及定位，防止第一弹性件径向移动产生偏移或侧弯，确保第一弹性件始终沿着阀体的轴线方向做直线运动；同时限位部对第一弹性件的端部施加摩擦力，有利于防止第一弹性件在往复压缩和伸展时端部与第一弹性件的中部区域发生缠绕；并且在本是实用新型中限位部与阀体一体成型，避免增加电磁阀的组装步骤，有利于提高电磁阀整体的组装效率；同时也能够避免使用过程中限位部与阀体产生相对位移，影响对第一弹性件的限位效果。
在其中一个实施例中，所述限位部为设置于所述第一安装腔内朝向所述封堵组件的轴线方向延伸的凸起，所述第一弹性件的外侧面与所述凸起的侧壁抵接。
可以理解的是，限位部为一凸起，结构简单，阀体的加工难度。
在其中一个实施例中，第一安装腔的内靠近所述阀口一端的腔底凹陷并形成有限位槽，所述限位槽的槽壁形成所述限位部，所述第一弹性件靠近所述阀口的一端收容在所述限位槽内，且所述第一弹性件的外侧面与所述限位槽的侧壁抵接。
可以理解的是，限位部为第一安装腔的腔底凹陷形成的限位槽，其结构简单，易于加工成型，降低阀体的加工难度，有利于降低电磁阀的制造成本。
在其中一个实施例中，所述第一弹性件的靠近所述阀口的一端具有第一 非弹性段。
可以理解的是，在第一弹性件上设置非弹性段，非弹性段无法伸缩或延展，从而降低其与第一弹性件的中部发生缠绕的可能性。
在其中一个实施例中，所述限位部为凸起或限位槽；所述凸起设置于所述第一安装腔内朝向所述封堵组件的轴线方向延伸；所述第一安装腔的内靠近所述阀口一端的腔底凹陷并形成所述限位槽；所述凸起的高度或者所述限位槽的深度等于或小于所述第一非弹性段的高度。
可以理解的是，凸起的高度或者所述限位槽的深度等于或小于所述第一非弹性段的高度，有利于防止凸起的高度或限位槽的深度过大从而影响第一弹性件的往复压缩或伸展的幅度，进而影响第一弹性段对封堵组件的驱动力的大小，影响开阀。
在其中一个实施例中，所述第一弹性件为弹簧，所述弹簧靠近所述阀口的一端具有至少两圈所述弹簧并紧形成所述第一非弹性段。
在其中一个实施例中，所述凸起的高度或者所述限位槽的深度等于或小于并紧的两圈所述弹簧的线径之和。
可以理解的是，凸起的高度或者限位槽的深度等于或小于并紧的两圈弹簧的线径之和。避免凸起的高度或限位槽的深度过大从而影响弹簧的往复压缩或伸展的幅度，影响开阀效率。
在其中一个实施例中，所述第一弹性件的远离所述阀口的一端具有第二非弹性段，所述第二非弹性段与所述封堵组件远离所述阀口的一端抵靠。
可以理解的是，设置第二非弹性段，有利于防止第一弹性件的远离阀口的一端与第一弹性件的中部区域发生缠绕。
在其中一个实施例中，所述封堵组件上与所述第一弹性件抵接的一端设 置凹槽部，所述第二非弹性段收容于所述凹槽部内，且所述第二非弹性段的外侧面与所述凹槽部靠近所述第一安装腔一侧的槽壁抵靠。
可以理解的是，设置凹槽部，使得第二非弹性段收容于凹槽部内，对第一弹性件起到限位以及定位的作用。
在其中一个实施例中，所述凹槽的深度等于或小于所述第二非弹性段的高度。
可以理解的是，凹槽的深度等于或小于第二非弹性段的高度，以免凹槽的深度过深导致凹槽的槽壁妨碍第一弹性件做压缩或伸展运动。
在其中一个实施例中，所述第一弹性件为弹簧，所述弹簧抵接于所述封堵组件的一端具有至少两圈所述弹簧并紧形成所述第二非弹性段，且所述凹槽部的深度等于或小于并紧的两圈所述弹簧的线径之和。
在其中一个实施例中，所述阀体的内壁腔体直径大于所述第一弹性件的外径。
可以理解的是，阀座内壁腔体直径大于第一弹性件的外径，可有效避免腔壁与第一弹性件接触产生摩擦力，避免影响第一弹性件收缩或伸展的速度。
在其中一个实施例中，包括安装基体以上所述的任意一种电磁阀；所述电磁阀与所述安装基体可拆卸连接。
可以理解的是，电磁阀与安装基体可拆卸连接，简化电磁阀与安装台组装和拆卸的难度，实现电磁阀与安装基体的快速连接或分离，提高安装效率。
在其中一个实施例中，所述安装基体的远离所述阀口的一端设置安装槽，所述安装槽内设置密封件，所述安装基体与所述阀体通过所述密封件密封连接。
上述技术方案相比于现有技术的有益效果是:
本申请通过设置限位部对第一弹性件进行限位及定位，防止第一弹性件径向移动产生偏移或侧弯，确保第一弹性件始终沿着阀体的轴线方向做直线运动；同时限位部对第一弹性件的端部施加摩擦力，有利于防止第一弹性件在往复压缩和伸展时端部与第一弹性件的中部区域发生缠绕；并且在本是实用新型中限位部与阀体一体成型，避免增加电磁阀的组装步骤，有利于提高电磁阀整体的组装效率；同时也能够避免使用过程中限位部与阀体产生相对位移，影响对第一弹性件的限位效果。
附图说明
图1为本申请一个实施例中电磁阀和安装基体组装的示意图。
图2为图1的纵剖面图。
图3为本申请中电磁阀的剖面图。
标号说明：100、电磁阀；200、电磁阀组件；1、阀体；11、第一安装腔；12、阀口；13、限位部；14、阀座；141、延伸部；142、第一台阶；143、第一凹槽；15、阀盖；151、凹腔；16、装夹部；17、连接部；171、第一螺纹部；18、进流通道；19、出流通道；2、封堵组件；21、凹槽部；22、先导阀口；23、先导孔；3、第一弹性件；31、第一非弹性段；32、第二非弹性段；4、电磁驱动组件；41、套管；42、电磁线圈；43、定子；44、动子；45、第二安装腔；46、阀针；47、第二弹性件；48、阀针弹性件；49、导磁架；5、安装基体；51、安装槽；52、第二台阶；6、密封件。
具体实施方式
下面将结合本申请实施方式中的附图，对本申请实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅仅是本申请一部分实施方式，而不是全部的实施方式。基于本申请中的实施方式，本领域普通技术 人员在没有做出创造性劳动前提下所获得的所有其他实施方式，都属于本申请保护的范围。
需要说明的是，当组件被称为“装设于”另一个组件，它可以直接装设在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。当一个组件被认为是“固定于”另一个组件，它可以是直接固定在另一个组件上或者可能同时存在居中组件。
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本申请。本申请所使用的术语“或/及”包括一个或多个相关的所列项目的任意的和所有的组合。
如图1-3所示，本实施例提供了一种电磁阀100，电磁阀100包括阀体1、及封堵组件2；电磁阀100用于控制管道中介质的通/断或者介质流量的大小。其中阀体1内具有第一安装腔11，第一安装腔11具有与外部环境连通的阀口12；封堵组件2收容于第一安装腔11内用于启/闭阀口12，且封堵组件2与第一安装腔11的腔壁密封滑动连接。
具体的，电磁阀100还包括第一弹性件3，第一弹性件3可沿电磁阀100的轴线方向收缩或延展，第一弹性件3延展扩张时驱动封堵组件2背向阀口12移动，实现开阀；第一安装腔11内靠近阀口12的一端设置与阀体1一体成型的限位部13，第一弹性件3套设于封堵组件2上，第一弹性件3一端抵靠于封堵组件2，另一端抵靠于阀体1，且第一弹性件3抵靠于阀体1一端的外侧面与限位部13抵靠。
现有技术中的弹簧由于采用铆接的形式与阀体1组成一体结构，因此会 造成组装工艺复杂，弹簧后期无法拆卸、阀体1的加工难度提高、制造成本增加的技术问题；现有技术中也有通过另外设置有限位件对弹簧进行限位，然而额外设置限位件同样增加组装步骤，且在电磁阀100作业过程中，限位件可能会相对于阀体1相对移动，导致对弹簧的限位不够稳定，存在隐患。
而本申请通过设置与阀体1一体成型的限位部13，实现对第一弹性件3进行限位及定位，防止第一弹性件3径向移动产生偏移或侧弯，确保第一弹性件3始终沿着阀体1的轴线方向做直线运动；同时限位部13对第一弹性件3的端部施加摩擦力，有利于防止第一弹性件3在往复压缩和伸展时端部与第一弹性件3的中部区域发生缠绕；并且在本是实用新型中限位部13与阀体1一体成型，避免增加电磁阀100的组装步骤，有利于提高电磁阀100整体的组装效率；同时也能够避免使用过程中限位部13与阀体1产生相对位移，影响对第一弹性件3的限位效果。
在其中一个实施例中，参阅图2、3，限位部13为设置于第一安装腔11内朝向封堵组件2的轴线方向延伸的凸起，第一弹性件3的外侧面与凸起的侧壁抵接。其中凸起可设置于第一安装腔11的底部，或凸起设置于第一安装腔11的侧壁，凸起结构简单，易于加工成型，降低阀体1的加工难度，有利于降低电磁阀100的制造成本。当然在其他实施例中，限位部13的具体结构不局限于以上所述或图中所述，例如，
在另一个实施例中，第一安装腔11内靠近阀口12一端的腔底凹陷并形成有限位槽，限位槽的槽壁形成限位部13，第一弹性件3远离封堵组件2的一端收容在限位槽内，且第一弹性件3的外侧面与限位槽的侧壁抵接。
在其中一个实施例中，参阅图2、3，第一弹性件3的靠近阀口12的一端具有第一非弹性段31。其中第一非弹性段31无法伸缩或延展，从而降低其与 第一弹性件3的中部发生缠绕的可能性。
可选的，凸起的高度或者限位槽的深度等于或小于第一非弹性段31的高度，从而有利于防止凸起的高度或限位槽的深度过大从而影响第一弹性件3的往复压缩或伸展的幅度，进而影响第一非弹性段31对封堵组件2的驱动力的大小，影响开阀。
在其中一个实施例中，第一弹性件3为弹簧，弹簧远离封堵组件2的一端具有至少两圈弹簧并紧形成第一非弹性段31，也可以理解为，弹簧螺旋形成多个圈，第一非弹性段31由至少两个圈并紧形成，并紧之后的圈无法相对移动，从而形成的第一非弹性段31无法压缩或伸展。当然在其他实施例中，第一弹性件3不局限于弹簧，也可以是其他弹性元件。
可选的，凸起的高度或者限位槽的深度等于或小于并紧的两圈弹簧的线径之和；避免凸起的高度或限位槽的深度过大从而影响弹簧的往复压缩或伸展的幅度，影响开阀效率。
在其中一个实施例中，参阅图2、3，第一弹性件3的远离所阀口12的一端具有第二非弹性段32，第二非弹性段32与封堵组件2远离阀口12的一端抵靠。可以理解的是，设置第二非弹性段32，有利于防止第一弹性件3的远离阀口12的一端与第一弹性件3的中部区域发生缠绕。
可选的，封堵组件2上与第一弹性件3抵接的一端设置凹槽部21，第二非弹性段32收容于凹槽部21内，且第二非弹性段32的外侧面与凹槽部21靠近第一安装腔11一侧的槽壁抵靠。设置凹槽部21，使得第二非弹性段32收容于凹槽部21内，结合限位部13，进一步的加强对第一弹性件3的限位以及定位，确保第一弹性件3的运动过程的稳定性。
可选的，凹槽部21的深度等于或小于第二非弹性段32的高度，以免凹 槽部的深度过深导致凹槽部的槽壁妨碍第一弹性件3做压缩或伸展运动。
在其中一个实施例中，第一弹性件3为弹簧，弹簧抵接于封堵组件2的一端具有至少两圈弹簧并紧形成第二非弹性段32，且凹槽部21的深度等于或小于并紧的两圈弹簧的线径之和。
在其中一个实施例中，阀体1内壁腔体直径大于第一弹性件3的外径，从而避免腔壁与第一弹性件3接触产生摩擦力，避免影响第一弹性件3收缩或伸展的速度。
本申请还提供一种电磁阀组件200，包括安装基体5以上所述的任意一种电磁阀100；电磁阀100与安装基体5可拆卸连接，简化电磁阀100与安装基体5组装和拆卸的难度，实现电磁阀100与安装基体5的快速连接或分离，提高安装效率。
具体的，在本实施例中，参阅图1-3，阀体1至少包括阀座14，阀座14内开设有第一安装腔11，沿阀座14轴向自上而下依次设有装夹部16和连接部17，连接部17的外侧壁上设置有第一螺纹部171，对应的安装基体5内设置有第二螺纹部(图中未示出)，第一螺纹部171与第二螺纹部连接，实现阀座14与安装基体5的快速组装。其中安装基体5的具体结构形式不局限于文中所述或图中所示的形式，也可以是任何与空调管路或空调组件实现连接中间件。
具体的，在本实施例中，装夹部16的外径大于连接部17的外径，装夹部16的下端面与安装基体5的上端面抵接。
可选的，安装基体5的远离阀口12的一端设置安装槽51，具体的，安装槽51开设于安装基体5与阀座14相对的端面上，安装槽51内设置密封件6，安装基体5与阀座14通过密封件6密封连接，有利于加强安装基体5与阀座 14之间的密封性能。其中，阀座14内开设有与阀口12和第一安装腔11连通的进流通道18、出流通道19，控制阀口12的开闭可控制进流通道18和出流通道19的连通或封闭。阀座14远离装夹部16的一端轴向延伸形成延伸部141，延伸部141的外径小于阀座14在进流通道18处的外径，阀座14的进流通道18与延伸部141的衔接处形成第一台阶142，安装基体5的内侧壁上具有第二台阶52，第一台阶142与第二台阶52抵接。延伸部141的外侧部设有用于安装密封件6的第一凹槽143，第一凹槽143沿延伸部141外部周向设置。
可选的，装夹部16上设置有至少两个装夹平面，外部安装工具与装架平面配合，实现阀座14与安装基体5的连接拧紧，提高安装效率。
可选的，参阅图，阀座14的装夹部16上设置多个装夹平面，例如六个装夹平面，多个装夹平面绕阀座14周向均布设置。当然在其他实施例中，对装夹平面设置的个数不做限制。
在其中一个实施例中，参阅图1-3，阀体1还包括阀盖15，阀盖15的外侧壁与第一安装腔11的内壁侧密封连接，且阀盖15与阀座14无相对滑动。阀盖15靠近阀口12的一端开设有用于收容封堵组件2的凹腔151，封堵组件2远离阀口12的一端与凹腔151的腔壁密封滑动连接。
在其中一个实施例中，电磁阀100还包括电磁驱动组件4，电磁驱动组件4用于驱动封堵组件2沿阀体1的轴线方向往复移动，实现阀口12的启/闭。
具体的，电磁驱动组件4包括电磁单元、阀针单元、导磁架49，导磁架49设置于阀座14上，导磁架49用于对电磁单元进行限位及定位支撑。电磁单元通电时驱动阀针单元背向封堵组件2移动，实现开阀。关闭电源时，封堵组件2朝向阀口12移动直至与阀口12贴紧密封关闭阀口12。
电磁单元包括电磁线圈42、相对于电磁线圈42固定不动的定子43和可 沿阀座14轴向移动的动子44，电磁线圈42套设于定子43和动子44外，其中电磁线圈42固定于导磁架49内。定子43和动子44之间还设置有第二弹性件47，动子44内开设有沿轴向贯通的第二安装腔45，第二弹性件47至少部分可移动的设置于第二安装腔45内，第二弹性件47弹性恢复可驱动阀针单元朝向封堵组件2移动，推动封堵组件2朝向阀口12移动关闭阀口12。
电磁驱动组件4还包括套管41，套管41的靠近阀座14的一端伸出导磁架49外并与阀盖15固定连接；定子43固定于套管41远离阀座14的一端，动子44可移动的设置于套管41内，电磁线圈42套设于套管41外。
阀针单元包括阀针46、阀针弹性件48；阀针46可移动的设置与第二安装腔45内，阀针弹性件48一端与阀针46靠近定子43的一端抵靠，另一端与第二安装腔45靠近阀座14的一端抵靠。
具体地，封堵组件2靠近阀针46的一端设置具有先导阀口22的先导阀座，阀针46在电磁单元的驱动下开闭先导阀口22。封堵组件2中心设有轴向贯通的先导孔23，先导孔23与先导阀口22连通。设置先导阀口22和先导孔23，使得封堵组件2在开阀或闭阀时，封堵组件2两侧存在压差力，减小开阀或闭阀难度。以常闭式电磁阀为例，电磁单元的电磁力开启时，先导阀口22先于阀口12打开，此时封堵组件2靠近阀针46的一侧腔室通过先导阀口22和先导孔23卸压，在封堵组件2两端形成上低下高的压差，在压力差的作用下，流体压力推动封堵组件2向上移动将阀口12打开；断电时，在第二弹性件47和阀针本身重力的作用下，阀针46复位，先导阀口22关闭，封堵组件2向下移动，阀口12关闭；封堵组件2靠近阀口一侧的腔室压力升高，流体压力向封堵组件2加压，密封更好。
本申请中电磁阀100(以常闭式电磁阀为例)实现开阀的过程为：电磁线 圈42通电，动子44朝向定子43移动，动子44克服第二弹性件47的弹力向上运动，带动阀针46背向阀座14移动，此时动子44需克服第二弹性件47力才能向上运动，先导阀口22打开泄压后，封堵组件2在第一弹性件3的推动及上下压力差的作用下背向阀口12运动；而此时动子44与定子43之间的间隙已经很小，吸合力远大于吸合初始阶段，并且此时动子44具有较大的动能，很容易实现开阀，开阀能力远比传统结构优秀。最后动子44和定子43完全吸合，此时阀针46在阀针46弹性件的作用下继续向上运动到上限位，封堵组件2向上移动至与阀盖15贴合，阀口12达到全开状态。
关阀时电磁线圈42断电，动子44不受定子43的磁吸力，则动子44在第二弹性件47和阀针弹性件48的弹力作用以及自身的重力作用下带动阀针46一起向下运动，实现阀口12的关闭。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对实用新型专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (14)

  1. 一种电磁阀，包括阀体、及封堵组件；所述阀体内具有第一安装腔以及阀口，所述封堵组件收容于所述第一安装腔内，用于启/闭所述阀口；
    其特征在于，所述电磁阀还包括第一弹性件，所述第一安装腔靠近所述阀口的一端设置有与所述阀体一体成型的限位部，所述第一弹性件套设于封堵组件上，所述第一弹性件一端抵靠于所述封堵组件，另一端抵靠于所述阀体，且所述第一弹性件抵靠于所述阀体一端的外侧面与所述限位部抵靠。
  2. 根据权利要求1所述的电磁阀，其中，所述限位部为设置于所述第一安装腔内朝向所述封堵组件的轴线方向延伸的凸起，所述第一弹性件的外侧面与所述凸起的侧壁抵接。
  3. 根据权利要求1所述的电磁阀，其中，所述第一安装腔的内靠近所述阀口一端的腔底凹陷并形成有限位槽，所述限位槽的槽壁形成所述限位部，所述第一弹性件靠近所述阀口的一端收容在所述限位槽内，且所述第一弹性件的外侧面与所述限位槽的侧壁抵接。
  4. 根据权利要求1所述的电磁阀，其中，所述第一弹性件的靠近所述阀口的一端具有第一非弹性段。
  5. 根据权利要求4所述的电磁阀，其中，所述限位部为凸起或限位槽；所述凸起设置于所述第一安装腔内朝向所述封堵组件的轴线方向延伸；所述第一安装腔的内靠近所述阀口一端的腔底凹陷并形成所述限位槽；
    所述凸起的高度或者所述限位槽的深度等于或小于所述第一非弹性段的高度。
  6. 根据权利要求5所述的电磁阀，其中，所述第一弹性件为弹簧，所述弹簧靠近所述阀口的一端具有至少两圈所述弹簧并紧形成所述第一非弹性段。
  7. 根据权利要求6所述的电磁阀，其中，所述凸起的高度或者所述限位槽的深度等于或小于并紧的两圈所述弹簧的线径之和。
  8. 根据权利要求1所述的电磁阀，其中，所述第一弹性件的远离所述阀口的一端具有第二非弹性段，所述第二非弹性段与所述封堵组件远离所述阀口的一端抵靠。
  9. 根据权利要求8所述的电磁阀，其中，所述封堵组件与所述第一弹性件抵接的一端设置凹槽部，所述第二非弹性段收容于所述凹槽部内，且所述第二非弹性段的外侧面与所述凹槽部靠近所述第一安装腔一侧的槽壁抵靠。
  10. 根据权利要求9所述的电磁阀，其中，所述凹槽部的深度等于或小于所述第二非弹性段的高度。
  11. 根据权利要求10所述的电磁阀，其中，所述第一弹性件为弹簧，所述弹簧抵接于所述封堵组件的一端具有至少两圈所述弹簧并紧形成所述第二非弹性段，且所述凹槽部的深度等于或小于并紧的两圈所述弹簧的线径之和。
  12. 根据权利要求1所述的电磁阀，其中，所述阀体的内壁腔体直径大于所述第一弹性件的外径。
  13. 一种电磁阀组件，其特征在于，包括安装基体和权利要求1-12中任一项所述的电磁阀；所述电磁阀与所述安装基体可拆卸连接。
  14. 根据权利要求13所述的电磁阀组件，其中，所述安装基体的远离所述阀口的一端设置安装槽，所述安装槽内设置密封件，所述安装基体与所述阀体通过所述密封件密封连接。
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