WO2022077765A1 - 一种比例流量阀 - Google Patents

一种比例流量阀 Download PDF

Info

Publication number
WO2022077765A1
WO2022077765A1 PCT/CN2020/138890 CN2020138890W WO2022077765A1 WO 2022077765 A1 WO2022077765 A1 WO 2022077765A1 CN 2020138890 W CN2020138890 W CN 2020138890W WO 2022077765 A1 WO2022077765 A1 WO 2022077765A1
Authority
WO
WIPO (PCT)
Prior art keywords
annular
valve core
installation cavity
core assembly
hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/138890
Other languages
English (en)
French (fr)
Inventor
高贵锋
饶青超
伍倚明
邓潇彬
王瑞强
何杨
陈文福
于力伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ambulanc Shenzhen Tech Co Ltd
Original Assignee
Ambulanc Shenzhen Tech Co Ltd
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 Ambulanc Shenzhen Tech Co Ltd filed Critical Ambulanc Shenzhen Tech Co Ltd
Priority to EP20957539.8A priority Critical patent/EP4201462B1/en
Priority to BR112023006310A priority patent/BR112023006310A2/pt
Publication of WO2022077765A1 publication Critical patent/WO2022077765A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F16K1/46—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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre 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
    • F16K31/0644—One-way valve
    • F16K31/0655—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
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • 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
    • F16K39/00—Devices for relieving the pressure on the sealing faces
    • F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
    • F16K39/022—Devices for relieving the pressure on the sealing faces for lift valves using balancing surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
    • A61M16/122—Preparation of respiratory gases or vapours by mixing different gases with dilution
    • A61M16/125—Diluting primary gas with ambient air
    • A61M16/127—Diluting primary gas with ambient air by Venturi effect, i.e. entrainment mixers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A61M16/202—Controlled valves electrically actuated
    • A61M16/203—Proportional
    • 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
    • F16K2200/00—Details of valves
    • F16K2200/30—Spring arrangements
    • F16K2200/305—Constructional features of springs
    • F16K2200/3051—Generally flat springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/088—Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks

Definitions

  • the present application relates to the technical field of gas flow control and valves, in particular to a proportional flow valve.
  • the flow output value has a linear relationship with the valve core opening, and the valve core opening has a linear relationship with the input electrical signal through the intermediate conversion mechanism, thus determining the linear relationship between the flow output value and the input signal.
  • the venturi nozzle is usually used to introduce air after the proportional valve, but the gas passing through the proportional valve will generate a large back pressure when passing through the venturi nozzle. It cannot work normally under pressure conditions, and the proportional adjustment of the flow cannot be realized.
  • the main purpose of this application is to propose a proportional flow valve, which aims to solve the influence of high back pressure and make the proportional flow valve work stably.
  • the proportional flow valve proposed in this application includes:
  • the valve housing assembly is formed with an installation cavity with an open lower end, an air intake seat located in the middle of the open end of the installation cavity is formed, and an air intake passage extending upward and downward is formed in the air intake seat;
  • an electromagnet assembly arranged at the upper end of the installation cavity, for providing upward magnetic attraction
  • the valve core assembly is arranged in the installation cavity and is located in the middle position of the installation cavity, an annular installation cavity is formed between the valve core assembly and the inner wall surface of the installation cavity, and driven by the magnetic attraction force , the valve core assembly has an upward movable stroke, an air guide channel is formed in the valve core assembly, the inlet of the air guide channel is formed at the lower end of the valve core assembly, and communicates with the intake channel, an outlet is formed at a side end of the valve core assembly;
  • the sealing ring structure includes a sealing ring sealed in the annular installation cavity, the inner ring of the sealing ring is sleeved on the valve core assembly, and the outer ring of the sealing ring is fixedly installed in the installation cavity, so as to dividing the annular installation cavity into a closed upper annular installation cavity and a lower annular installation cavity, and the upper annular installation cavity communicates with the outlet of the air guide channel; and,
  • a pre-tightening force structure arranged between the valve core assembly and the inner wall of the installation cavity, to provide a downward pre-tightening force to the valve core assembly
  • an air outlet air gap that communicates with the lower annular installation cavity may be formed.
  • the preloading force structure includes an annular elastic sheet, the inner end of the annular elastic sheet is fixed to the valve core assembly, and the outer end is fixed to the inner wall of the installation cavity, and the annular elastic sheet has an inner end fixed to the valve core assembly.
  • the annular surface is provided with a hollow pattern combination, the hollow pattern combination is a center-symmetric structure, and the hollow pattern combination includes a plurality of hollow pattern units, and the number of the hollow pattern units is an integer multiple of two or more natural numbers; and/or ,
  • the electromagnet assembly includes a coil that extends vertically and is fixedly installed in the installation cavity, and a static armature that is fixedly installed in the inner hole of the coil.
  • the static armature forms the Magnetic attraction
  • the valve core assembly includes a movable armature and a valve core, the movable armature is sandwiched between the static armature and the valve core, and the upper end of the movable armature is spaced from the lower end of the static armature,
  • the lower end of the movable armature is connected with the upper end of the valve core, wherein the air outlet air gap is formed between the lower end surface of the valve core and the upper end surface of the intake seat .
  • the lower end surface of the valve core is provided with a first air guide channel section
  • the lower end surface of the movable armature is provided with a first installation hole extending in the up-down direction
  • the side wall surface of the first installation hole is provided.
  • a second air guide channel section is provided, the upper end of the valve core is installed in the first installation hole, and the first air guide channel section is communicated with the second air guide channel section to form the said airway;
  • the movable armature is located at the lower end of the inner hole of the coil, and a non-metal magnetic isolation sheet is arranged between the upper end of the movable armature and the lower end of the static armature; and/or,
  • the movable armature is located at least partially within the coil and has a mounting section located within the coil;
  • the proportional flow valve also includes a first magnetic isolation sleeve extending in the up-down direction, the first magnetic isolation sleeve is arranged between the coil and the movable armature, and at least partially covers the installation segment settings.
  • the upper end of the first magnetic isolation sleeve is located in the inner hole of the coil, and the lower end of the first magnetic isolation sleeve protrudes from the lower end of the coil;
  • the lower end of the static armature and the upper end of the movable armature are both installed in the first magnetic isolation sleeve, and the side wall of the static armature is in sealing contact with the inner wall of the first magnetic isolation sleeve.
  • the air guide channel is formed in the valve core and the movable armature
  • An air gap is formed between the side wall of the movable armature and the outer side wall of the first magnetic isolation sleeve, and the air gap communicates the electromagnet air gap and the outlet of the air guide channel with the upper Ring mounting cavity.
  • the installation cavity is arranged in steps, so as to form a first annular step surface arranged downward;
  • the proportional flow valve further includes a first annular support seat located below the first annular stepped surface, the outer ring of the first annular support seat is in sealing contact with the inner side wall of the installation cavity, and the first annular support seat is in sealing contact with the inner side wall of the installation cavity.
  • the inner ring of the annular support seat is sleeved on the valve core assembly, and a first annular installation space is formed between the upper end surface of the first annular support seat and the first annular stepped surface, and the sealing ring clamps installed in the annular space.
  • the inner hole of the first annular support seat is set as a tapered hole with a small upper part and a large lower part;
  • the lower end of the valve core assembly protrudes from the lower end of the tapered hole and is in active contact with the upper end surface of the intake seat, and the lower end of the valve core assembly is arranged in steps to form a second annular step arranged upwards noodle;
  • the pre-tightening force structure includes an annular elastic sheet, the inner ring of the annular elastic sheet is in contact with the second annular stepped surface, and the outer ring of the annular elastic sheet is fixed on the first annular support seat.
  • the lower end surface, and the second annular stepped surface is located above the lower end surface of the first annular support seat.
  • the valve housing assembly includes:
  • the lower end surface of the housing is provided with a placement hole extending in the up-down direction, and the coil is installed in the placement hole;
  • a second annular support seat is installed on the lower end of the casing, and the inner hole of the second annular support seat is communicated with the placement hole to form the installation cavity together;
  • valve body mounted on the inner hole of the second annular support seat and located above the intake seat;
  • valve body and the intake seat are integrally arranged.
  • the upper end sidewall of the valve body is threadedly connected to the inner wall of the inner hole of the second annular support seat; and/or,
  • the second annular support seat includes a support seat cylinder and a second magnetic isolation sleeve extending upward from the upper end surface of the support seat cylinder, the upper end surface of the support seat cylinder and the lower end surface of the shell sealing contact, the upper end of the second magnetic isolation sleeve extends into the inner hole of the coil, the lower end of the static armature and the upper end of the movable armature are both installed in the second magnetic isolation sleeve, and The side wall of the static armature is in sealing contact with the inner wall of the second magnetic isolation sleeve; and/or,
  • the upper end surface of the valve body is provided with a second installation hole, and the second installation hole is arranged in steps to form an abutting step surface arranged upward.
  • the proportional flow valve further includes a first clamping component.
  • the first clamping component is annularly arranged and is located on the abutting step surface, the outer ring of the first clamping component is in sealing contact with the inner wall surface of the second installation hole, and the first clamping component is formed There is a first annular clamping space, the inner ring of the sealing ring is sealingly sleeved on the valve core assembly, and the outer ring of the sealing ring is clamped in the first annular clamping space.
  • the proportional flow valve further includes a transition block, the transition block is located in the placement hole and below the coil, the transition block is sealingly sleeved on the lower end of the second magnetic isolation sleeve , the side wall of the transition block is in sealing contact with the side wall of the placement hole, and the lower end face of the transition block is mounted to the upper end face of the cylinder of the support seat; and/or,
  • the inner hole of the cylinder body of the support seat is set as a conical hole with a small top and a large bottom, the lower end of the valve core assembly is set in steps to form a third annular stepped surface set upward, and the pre-tightening force structure It includes an annular elastic sheet, the inner ring of the annular elastic sheet is in contact with the third annular stepped surface, and the outer ring of the annular elastic sheet is fixed on the upper end surface of the valve body.
  • a connecting hole is formed through the lower end surface of the valve core
  • the lower end surface of the movable armature is provided with a third installation hole extending along the up-down direction;
  • the valve core assembly further includes a connection post, the upper end of the connection post is installed in the third installation hole, the lower end of the connection post is inserted into the connection hole, and the connection post is formed with the Air channel.
  • the connecting column is arranged in steps to form a fourth step surface arranged upward, and a second annular installation space is formed between the fourth step surface and the lower end surface of the movable armature;
  • the installation cavity is formed with a downwardly arranged fifth stepped surface, and the fifth stepped surface is located below the fourth stepped surface;
  • the pre-tightening force structure includes an annular elastic sheet, the inner ring of the annular elastic sheet is clamped in the second annular installation space, and the outer ring of the annular elastic sheet is in contact with the fifth step.
  • the connecting column is further formed with a sixth stepped surface disposed downward, and a third annular installation space is formed between the sixth stepped surface and the upper end surface of the valve core;
  • the installation cavity is formed with a downwardly arranged seventh annular stepped surface, and the seventh annular stepped surface is provided with a second clamping component, the second clamping component is annularly arranged, and the second clamping component is arranged in a ring shape.
  • the outer ring of the assembly is in sealing contact with the inner wall surface of the installation cavity, and the second clamping assembly forms a fourth annular clamping space;
  • the inner ring of the sealing ring is clamped in the third annular installation space, and the outer ring of the sealing ring is clamped in the fourth annular clamping space.
  • the air inlet passage is communicated with the air guide passage, the gas at the air inlet of the air inlet passage is introduced into the closed upper annular installation cavity, so that the sealing ring can prevent the
  • the spool assembly generates a downward pressure because the preload structure provides a downward preload on the spool assembly.
  • the pressure and the preload The force forms a downward resultant force, so that the lower end of the valve core assembly is in sealing contact with the upper end of the intake seat, so as to prevent the proportional solenoid valve from leaking air.
  • the valve core The assembly is subjected to the upward electromagnetic force provided by the electromagnet assembly, and the air pressure of the air inlet provides an upward thrust to the valve core assembly.
  • the pressure , the four forces of the preload force, the electromagnetic force and the thrust force are balanced with each other, so that the valve core assembly can be stabilized in the working position.
  • the back pressure is the valve The core provides an upward back pressure.
  • the five forces of the pressure, the preload, the electromagnetic force, the thrust and the back pressure are balanced, so that the valve core can still be stabilized in the working position, so that the proportional valve can be in different positions. It works stably under the working conditions, and solves the influence of high back pressure on the proportional flow valve, and the effect is good.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a proportional flow valve provided by the application
  • FIG. 2 is a schematic structural diagram of a second embodiment of the proportional flow valve provided by the application.
  • FIG. 3 is a schematic structural diagram of a third embodiment of the proportional flow valve provided by the application.
  • FIG. 4 is a schematic structural diagram of an embodiment of the annular elastic piece in FIG. 1;
  • FIG. 5 is a schematic structural diagram of another embodiment of the annular elastic sheet in FIG. 1;
  • FIG. 7 is a graph of the relationship between the preload force and the valve core opening degree in the proportional flow valve provided by the application.
  • FIG. 8 is a graph showing the relationship between each force and the displacement of the valve core in the proportional flow valve provided by the application.
  • the flow output value has a linear relationship with the valve core opening, and the valve core opening has a linear relationship with the input electrical signal through the intermediate conversion mechanism, thus determining the linear relationship between the flow output value and the input signal.
  • the venturi nozzle is usually used to introduce air after the proportional valve, but the gas passing through the proportional valve will generate a large back pressure when passing through the venturi nozzle. It cannot work normally under pressure conditions, and the proportional adjustment of the flow cannot be realized.
  • FIGS. 1 to 5 are schematic structural diagrams of embodiments of the proportional flow valve provided by the present application.
  • the proportional flow valve 100 includes a valve housing assembly 1 , an electromagnet assembly 2 , a valve core assembly, a sealing ring structure and a preloading force structure, and the valve housing assembly 1 is formed with a lower end opening
  • the installation cavity, the open end of the installation cavity is formed with an air intake seat 6 located in the middle position, and an air intake channel 61 extending upward and downward is formed in the air intake seat 6, and the electromagnet assembly 2 is provided in the
  • the upper end of the installation cavity is used to provide upward magnetic attraction, the valve core assembly is arranged in the installation cavity, and is in the middle position of the installation cavity, and the valve core assembly is connected to the inner wall surface of the installation cavity.
  • An annular installation cavity a is formed therebetween, and under the drive of the magnetic attraction, the valve core assembly has an upward movable stroke, an air guide channel b is formed in the valve core assembly, and the inlet of the air guide channel b is formed At the lower end of the valve core assembly and communicated with the intake passage 61, an outlet is formed at the side end of the valve core assembly, and the sealing ring structure includes a sealing ring that is sealed in the annular installation cavity a 41.
  • the inner ring of the sealing ring 41 is sleeved on the valve core assembly, and the outer ring of the sealing ring 41 is fixedly installed in the installation cavity, so as to separate the annular installation cavity a into a closed upper annular installation Cavity a1 and lower annular installation cavity a2, the upper annular installation cavity a1 communicates with the outlet of the air guide channel b, and the pre-tightening force structure is arranged between the valve core assembly and the inner wall of the installation cavity.
  • an air outlet air gap communicating with the lower annular mounting cavity a2 may be formed between the lower end of the valve core assembly and the upper end of the intake seat 6 .
  • the air inlet passage 61 is communicated with the air guide passage b, the gas at the air inlet of the air inlet passage 61 is introduced into the airtight upper annular installation cavity a1, so that the airtight
  • the ring 41 produces a downward pressure on the spool assembly, because the preload structure provides a downward preload on the spool assembly.
  • the proportional solenoid valve does not work, the pressure and the pre-tightening force to form a downward resultant force, so that the lower end of the valve core assembly is in sealing contact with the upper end of the intake seat 6, so as to prevent the proportional solenoid valve from leaking.
  • the air intake seat 6 is provided with an air outlet channel 62 extending in the up and down direction.
  • the air outlet gap communicates with the air intake passage 61 and the air outlet passage 62, so as to realize exhaust.
  • the electromagnetic force curve is determined on the electromagnetic force curve according to the opening ratio of the outlet air gap and the current change ratio.
  • the force curve is non-linear, so it is necessary to match the change law of the preload force curve with the electromagnetic force curve to achieve an approximate linear relationship. Therefore, referring to Figure 5 and Figure 6, the preload force structure includes a ring-shaped The elastic sheet 51, the inner end of the annular elastic sheet 51 is fixed to the valve core assembly, and the outer end is fixed to the inner wall of the installation cavity, so that the annular elastic sheet 51 is easily deformed, so as to facilitate the valve core assembly.
  • the annular surface of the annular elastic piece 51 is provided with a hollow pattern combination, the hollow pattern combination is a center-symmetric structure, and the hollow pattern combination includes a plurality of hollow pattern units, and the hollow pattern units are The number is an integer multiple of a natural number above 2, so that the preloading force structure can provide a preloading force for the valve core assembly, and the relationship curve between the preloading force and the displacement is consistent with the law of the electromagnetic force curve, which is convenient to realize Proportional flow control.
  • the electromagnet assembly 2 includes a coil 21 that extends vertically and is fixedly installed in the installation cavity and a static armature 22 that is fixedly installed in the inner hole of the coil 21. When the coil 21 is energized, the coil 21 is energized.
  • the static armature 22 forms the magnetic attraction force.
  • the valve core assembly includes a movable armature 31 and a valve core 32. The movable armature 31 is sandwiched between the static armature 22 and the valve core 32.
  • the movable armature 31 The upper end of the movable armature 31 is spaced from the lower end of the static armature 22 to form an electromagnet air gap c, and the lower end of the movable armature 31 is connected to the upper end of the valve core 32, wherein the air outlet gap is formed in the Between the lower end surface of the valve core 32 and the upper end surface of the air intake seat 6, it is arranged in this way, because the lower end of the movable armature 31 is connected with the upper end of the valve core 32, so that the movable armature 31 is connected to the upper end of the valve core 32.
  • the movement state of the valve core 32 is consistent.
  • the static armature 22 forms the magnetic attraction force.
  • the size of the magnetic attraction force is changed.
  • the amount of change in the gap c is also the moving distance of the valve core 32.
  • the magnetic attraction attracts the movable armature 31 to move upward, thereby driving the valve core 32 to move upward, so that the lower end surface of the valve core 32 is in contact with the valve core 32.
  • the air outlet gap is formed between the upper end faces of the air inlet seat 6, so that the gas entering from the air inlet passage 61 can be discharged through the air outlet air gap.
  • the air guide channel b is formed in the valve core 32 and the movable armature 31 , and the structure is simple and easy to process.
  • the lower end surface of the valve core 32 is provided with a first air guide channel segment b1
  • the lower end surface of the movable armature 31 is provided with a first installation hole 311 extending in the up-down direction.
  • the side wall surface of the hole 311 is provided with a second air guide channel section b2
  • the upper end of the valve core 32 is installed in the first installation hole 311, and the first air guide channel section b1 and the second air guide channel section b1
  • the passage sections b2 are connected to form the air guide passage b together. In this way, the outside air enters the first air guide passage section b1 and the second air guide passage section b2 from the air inlet passage 61 in sequence.
  • the condensed gas causes the sealing ring 41 to generate a downward pressure on the valve core 32, so that the lower end of the valve core 32 is in contact with the valve core 32.
  • the upper end of the intake seat 6 is in sealing contact to avoid leakage of the proportional flow valve 100 .
  • the air guide channel b can also be formed in the valve core 32, and the structure is simple and easy to process.
  • the movable armature 31 is located at the lower end of the inner hole of the coil 21 , and a non-metal magnetic isolation sheet 7 is arranged between the upper end of the movable armature 31 and the lower end of the static armature 22 .
  • the movable armature 31 collides with the static armature 22 and is damaged.
  • the movable armature 31 is at least partially located in the coil 21 and has a mounting section located in the coil 21 , and the proportional flow valve 100 further includes a first spacer extending in the up-down direction.
  • the magnetic sleeve 8, the first magnetic isolation sleeve 8 is arranged between the coil 21 and the movable armature 31, and is at least partially arranged to cover the installation section.
  • the magnetic sleeve 8 covers the installation section to prevent the moving armature 31 from generating electromagnetic force after the coil 21 is energized, which affects the sensitivity of the moving armature 31 under the action of the electromagnetic force of the static armature 22 .
  • the material of the first magnetic isolation sleeve 8 is selected from copper.
  • the upper end of the first magnetic isolation sleeve 8 is located in the inner hole of the coil 21 , the lower end of the first magnetic isolation sleeve 8 protrudes from the lower end of the coil 21 , and the static
  • the lower end of the armature 22 and the upper end of the movable armature 31 are both installed in the first magnetic isolation sleeve 8 , because the side wall of the static armature 22 is in sealing contact with the inner wall of the first magnetic isolation sleeve 8 . , so as to avoid air leakage between the static armature 22 and the first magnetic isolation sleeve 8 and affect the air tightness of the proportional flow valve 100 .
  • the air guide channel b is formed between the valve core 32 and the movable armature 31 , between the side wall of the movable armature 31 and the outer side wall of the first magnetic isolation sleeve 8
  • An air gap is formed, because the air gap communicates the electromagnet air gap c and the outlet of the air guide channel b with the upper annular installation cavity a1, so that the outside air passes through the air inlet channel 61 through all the holes.
  • the electromagnet air gap c, the air guide channel b and the air passage gap can be gathered in the closed upper annular installation cavity a1, and the gathered gas makes the sealing ring 41 to the valve core 32 A downward pressure is generated, so that the lower end of the valve core 32 is in sealing abutment with the upper end of the intake seat 6 to prevent the proportional flow valve 100 from leaking.
  • the installation cavity is arranged in steps to form a first annular stepped surface 11 disposed downward, and the proportional flow valve 100 further includes a first annular stepped surface 11 located below the first annular stepped surface 11 .
  • a support seat 9, the outer ring of the first annular support seat 9 is in sealing contact with the inner side wall of the installation cavity, the inner ring of the first annular support seat 9 is sleeved on the valve core assembly, and the first annular support seat 9
  • a first annular installation space is formed between the upper end surface of the annular support seat 9 and the first annular stepped surface 11 , and the sealing ring 41 is clamped in the first annular installation space. Installation of the sealing ring 41 .
  • the inner hole of the first annular support seat 9 is set as a tapered hole with a small upper part and a large lower part, and the lower end of the valve core assembly protrudes from the lower end of the tapered hole and is connected to the intake air.
  • the upper end surface of the seat 6 is movably abutted, and the lower end of the valve core assembly is set in steps to form a second annular stepped surface 33 set upward.
  • the inner ring of 51 is in contact with the second annular stepped surface 33, and the outer ring of the annular elastic sheet 51 is fixed on the lower end surface of the first annular support seat 9, because the second annular stepped surface 33 is located above the lower end surface of the first annular support seat 9, so that the annular elastic sheet 51 exerts a downward pre-tightening force on the valve core assembly, and the effect is good, and the tapered hole is up and down.
  • the large setting provides a movable space for the annular elastic piece 51 .
  • the valve housing assembly 1 includes a housing 12 , a second annular support seat 13 and a valve body 14 .
  • the lower end surface of the housing 12 is provided with a placement hole extending in the up-down direction.
  • the coil 21 is installed in the placement hole
  • the second annular support seat 13 is installed at the lower end of the housing 12, and the inner hole of the second annular support seat 13 communicates with the placement hole to form the Installation cavity
  • the valve body 14 is installed in the inner hole of the second annular support seat 13, and is located above the intake seat 6, wherein the valve body 14 is integrally arranged with the intake seat 6, so that for precise processing.
  • valve body 14 is threadedly connected to the inner wall of the inner hole of the second annular support seat 13 .
  • This arrangement not only realizes the connection between the valve body 14 and the second annular support seat 13 Sealed connection and easy disassembly.
  • the second annular support base 13 includes a support base cylinder 131 and a second magnetic isolation sleeve 132 extending upward from the upper end surface of the support base cylinder 131 .
  • the upper end surface is in sealing contact with the lower end surface of the housing 12
  • the upper end of the second magnetic isolation sleeve 132 extends into the inner hole of the coil 21
  • the lower end of the static armature 22 and the upper end of the movable armature 31 are installed in the second magnetic isolation sleeve 132
  • the side wall of the static armature 22 is in sealing contact with the inner wall of the second magnetic isolation sleeve 132 .
  • the barrel 132 covers the upper end of the movable armature 31 to prevent the movable armature 31 from generating an electromagnetic force after the coil 21 is energized, which affects the sensitivity of the movable armature 31 under the action of the electromagnetic force of the static armature 22 . sex.
  • the upper end surface of the valve body 14 is provided with a second installation hole, and the second installation hole is arranged in a stepped manner to form an abutting step surface 141 arranged upward, so
  • the proportional flow valve 100 further includes a first clamping component 10 , the first clamping component 10 is annularly disposed and located on the abutting step surface 141 , and the outer ring of the first clamping component 10 is connected to the outer ring of the first clamping component 10 .
  • the inner wall of the second mounting hole is in sealing contact
  • the first clamping assembly 10 is formed with a first annular clamping space
  • the inner ring of the sealing ring 41 is sealingly sleeved on the valve core assembly
  • the sealing ring The outer ring of 41 is clamped in the first annular clamping space, and this arrangement realizes the installation of the sealing ring 41 .
  • the proportional flow valve 100 further includes a transition block 101, the transition block 101 is located in the installation hole and below the coil 21 for supporting the coil 21.
  • the transition block 101 is sealingly sleeved on the lower end of the second magnetic isolation sleeve 132, the side wall of the transition block 101 is in sealing contact with the side wall of the placement hole, and the lower end surface of the transition block 101 It is installed to the upper end surface of the support seat cylinder 131 , so that the support seat cylinder 131 is connected through the transition block 101 , so that the second annular support seat 13 is installed more stably.
  • the inner hole of the support seat cylinder 131 is set as a tapered hole with a small top and a large bottom, and the lower end of the valve core assembly is set in steps to form a third annular stepped surface 34 set upward,
  • the pre-tightening force structure includes an annular elastic sheet 51 , the inner ring of the annular elastic sheet 51 abuts against the third annular stepped surface 34 , and the outer ring of the annular elastic sheet 51 is fixed to the valve body 14 .
  • the upper end face is set in such a way that the annular elastic sheet 51 exerts a downward pre-tightening force on the valve core assembly, and the effect is good, and the conical holes are arranged in large up and down, which is the annular elastic sheet 51 Event space is provided.
  • a rotation stop structure is also provided between the lower end surface of the transition block 101 and the upper end surface of the support base cylinder 131 .
  • the transition block 101 rotates relative to the cylinder body 131 of the support seat, so as to ensure the air tightness of the proportional flow valve 100, and the effect is good.
  • the anti-rotation structure may be a latching protrusion and a latching groove that cooperate with each other.
  • the anti-rotation structure is a pin, and the transition block 101 and the The rotation-stop positioning of the support base cylinder 131 prevents the transition block 101 from rotating relative to the support base cylinder 131 .
  • the lower end surface of the valve core 32 is provided with a connecting hole
  • the lower end surface of the movable armature 31 is provided with a third mounting hole extending in the up-down direction
  • the valve core assembly further includes a connecting column 35 .
  • the upper end of the connection column 35 is installed in the third installation hole
  • the lower end of the connection column 35 is inserted into the connection hole
  • the air guide channel b is formed in the connection column 35.
  • the connecting column 35 is connected to the valve core 32 and the movable armature 31 , and the air guide channel b is provided on the connecting column 35 , which has a simple structure and is easy to process.
  • the connecting posts 35 are arranged in steps to form a fourth step surface 351 facing upward, and a second annular installation is formed between the fourth step surface 351 and the lower end surface of the movable armature 31 .
  • the installation cavity is formed with a downwardly arranged fifth stepped surface 15
  • the fifth stepped surface 15 is located below the fourth stepped surface 351
  • the preloading structure includes an annular elastic piece 51 .
  • the inner ring of the annular elastic sheet 51 is clamped in the second annular installation space, and the outer ring of the annular elastic sheet 51 is in contact with the fifth stepped surface 15 . In this way, the annular elastic sheet 51 is realized. and the annular elastic sheet 51 acts on the valve core 32 with a pre-tightening force at the initial position, so that the sealing effect of the proportional flow valve 100 is good.
  • the inner ring of the annular elastic sheet 51 is clamped in the second annular installation space, and the inner ring of the annular elastic sheet 51 can move up and down in the second annular installation space. Specifically, referring to FIG. 3 , the inner ring of the annular elastic sheet 51 abuts on the fourth stepped surface 351 , which facilitates the movement of the annular elastic sheet 51 and has a good effect.
  • the connecting column 35 is further formed with a sixth stepped surface 352 disposed downward, and a third annular installation space is formed between the sixth stepped surface 352 and the upper end surface of the valve core 32, so
  • the installation cavity is formed with a seventh annular stepped surface 16 disposed upward, and the seventh annular stepped surface 16 is provided with a second clamping component 102, and the second clamping component 102 is annularly arranged, and the The outer ring of the second clamping assembly 102 is in sealing contact with the inner wall surface of the installation cavity, the second clamping assembly 102 is formed with a fourth annular clamping space, and the inner ring of the sealing ring 41 is clamped in the In the third annular installation space, the outer ring of the sealing ring 41 is clamped in the fourth annular clamping space, so that the installation of the sealing ring 41 is realized, and the effect is good.
  • the air outlet air gap refers to the opening of the valve core of the proportional flow valve, and the gap formed by the interval between the lower end of the static armature and the end of the movable armature is the air gap of the electromagnet.
  • Iron air gap, changing the electromagnetic force, the change of the air gap is also the change of the valve core.
  • the electromagnetic force and the change of the air gap (equal to the valve opening) have a quadratic inverse relationship
  • the preload force and the valve opening are also in inverse quadratic relationship
  • the electromagnetic force curve and the preload force curve have the same changing law
  • the distance between the electromagnetic force curve and the preload force curve is the same.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

一种比例流量阀（100），包括阀壳体组件（1）、电磁铁组件（2）、阀芯组件、密封环结构及预紧力结构，阀壳体组件（1）形成环形安装腔（a），环形安装腔（a）的开口端形成有进气座（6），进气座（6）内形成有上下向延伸的进气通道（61），电磁铁组件（2）用以提供向上的磁吸力，阀芯组件在磁吸力的驱动下具有向上的活动行程，阀芯组件内形成有导气通道（b），导气通道（b）的入口形成在阀芯组件的下端，且与进气通道（61）连通，出口形成在阀芯组件的侧端，密封环结构包括内圈套装于阀芯组件且外圈固定于环形安装腔（a）内的密封环（41），预紧力结构设于阀芯组件与环形安装腔（a）内壁之间，以对阀芯组件提供向下的预紧力。

Description

一种比例流量阀
相关申请的交叉引用
本申请要求于2020年10月15日提交中国专利局、申请号为202011106344.2、申请名称为“一种比例流量阀”的中国专利申请的优先权，其专利申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及气体流量控制及阀门技术领域，特别涉及一种比例流量阀。
 背景技术
比例流量阀中流量输出值与阀芯开度成线性关系，而阀芯开度经过中间转换机构与输入电信号成线性关系，从而确定了流量输出值与输入信号的线性关系。
普通电磁阀使用电磁式线圈与线性弹簧结构，通常作为开关阀使用，即电磁线圈通电后克服弹簧力打开阀芯，由于电磁线圈产生的电磁力与气隙为指数关系，而线性弹簧与压缩量或者拉伸量线性关系，同等位移下，电磁力增加值比线性弹簧增加值大，所以可直接将阀芯开口打开到最大。但是难以满足比例流量阀在阀口打开过程中稳定在某一位置要求，因此无法实现流量输出值与输入信号的线性关系，无法实现流量的比例调节。
在某些工况下，例如转运呼吸机，通常在比例阀后使用文丘里喷嘴引入空气，但是经过比例阀的气体在经过文丘里喷嘴时会产生较大的背压，普通比例阀在高背压工况下无法正常工作，无法实现流量的比例调节。
到目前为止，市场上尚没有比例流量阀能解决上述问题。因此，需要新设计一种既能解决高背压影响，又能稳定工作的比例流量阀。
 技术解决方案
本申请的主要目的是提出一种比例流量阀，旨在能解决高背压影响，又能让比例流量阀稳定工作。
为实现上述目的，本申请提出的比例流量阀，包括：
阀壳体组件，形成有下端开口的安装腔，所述安装腔的开口端形成有位于其中部位置的进气座，所述进气座内形成有上下向延伸的进气通道；
电磁铁组件，设于所述安装腔的上端，用以提供向上的磁吸力；
阀芯组件，设于所述安装腔内，且处于所述安装腔的中部位置，所述阀芯组件与所述安装腔的内壁面之间形成环形安装腔，在所述磁吸力的驱动下，所述阀芯组件具有向上的活动行程，所述阀芯组件内形成有导气通道，所述导气通道的入口形成在所述阀芯组件的下端，且与所述进气通道连通，出口形成在所述阀芯组件的侧端；
密封环结构，包括密封设于所述环形安装腔内的密封环，所述密封环的内圈套装于所述阀芯组件，所述密封环的外圈固定安装于所述安装腔内，以将所述环形安装腔分隔成密闭的上环形安装腔和下环形安装腔，所述上环形安装腔连通所述导气通道的出口；以及，
预紧力结构，设于所述阀芯组件与所述安装腔的内壁之间，用以对所述阀芯组件提供向下的预紧力；
其中，所述阀芯组件的下端与所述进气座的上端之间可形成连通所述下环形安装腔的出气气隙。
在一实施例中，所述预紧力结构包括环状弹片，所述环状弹片的内端固定于所述阀芯组件，外端固定于所述安装腔的内壁，所述环状弹片的环状面设有镂空图案组合，所述镂空图案组合为中心对称结构，且所述镂空图案组合包括多个镂空图案单元，所述镂空图案单元的数量为2以上自然数的整数倍；和/或，
所述电磁铁组件包括沿上下向延伸设置且固定安装于所述安装腔内的线圈及固定安装于所述线圈内孔中的静衔铁，在所述线圈通电时，所述静衔铁形成所述磁吸力，所述阀芯组件包括动衔铁及阀芯，所述动衔铁夹设于所述静衔铁与所述阀芯之间，所述动衔铁的上端与所述静衔铁的下端间隔设置，以形成电磁铁气隙，所述动衔铁的下端与所述阀芯的上端相连接，其中，所述出气气隙形成于所述阀芯的下端面与所述进气座的上端面之间。
在一实施例中，所述阀芯下端面贯设有第一导气通道段，所述动衔铁下端面设有沿上下向延伸设置的第一安装孔，所述第一安装孔的侧壁面设有第二导气通道段，所述阀芯的上端安装于所述第一安装孔内，且所述第一导气通道段与所述第二导气通道段相连通，以共同形成所述导气通道；和/或，
所述动衔铁位于所述线圈内孔的下端，且所述动衔铁的上端与所述静衔铁的下端之间设置有非金属隔磁片；和/或，
所述动衔铁至少部分位于所述线圈内，且具有位于所述线圈内的安装段；
所述比例流量阀还包括沿上下向延伸设置的第一隔磁套筒，所述第一隔磁套筒设于所述线圈与所述动衔铁之间，且至少部分呈包覆所述安装段设置。
在一实施例中，所述第一隔磁套筒的上端位于所述线圈内孔，所述第一隔磁套筒的下端突伸出于所述线圈的下端；
所述静衔铁的下端与所述动衔铁的上端均安装于所述第一隔磁套筒内，所述静衔铁的侧壁与所述第一隔磁套筒的内壁密封抵接。
在一实施例中，所述导气通道形成于所述阀芯和所述动衔铁；
所述动衔铁的侧壁与所述第一隔磁套筒的外侧壁之间形成过气间隙，所述过气间隙连通所述电磁铁气隙及所述导气通道的出口与所述上环形安装腔。
在一实施例中，所述安装腔呈台阶设置，以形成朝下设置的第一环状台阶面；
所述比例流量阀还包括位于所述第一环状台阶面下方的第一环状支撑座，所述第一环状支撑座外圈与所述安装腔内侧壁密封抵接，所述第一环状支撑座内圈套装于所述阀芯组件，且所述第一环状支撑座的上端面与所述第一环状台阶面之间形成第一环状安装空间，所述密封环夹装于所述环状空间内。
在一实施例中，所述第一环状支撑座的内孔设置为上小下大的锥形孔；
所述阀芯组件的下端自所述锥形孔下端伸出与所述进气座上端面活动抵接，所述阀芯组件的下端呈台阶设置，以形成朝上设置的第二环状台阶面；
所述预紧力结构包括环状弹片，所述环状弹片的内圈与所述第二环状台阶面抵接，所述环状弹片的外圈固定于所述第一环状支撑座的下端面，且所述第二环状台阶面位于所述第一环状支撑座的下端面的上方。
在一实施例中，所述阀壳体组件包括：
壳体，所述壳体下端面贯设有沿上下向延伸设置的安置孔，所述线圈安装于所述安置孔内；
第二环状支撑座，安装于所述壳体下端，所述第二环状支撑座内孔与所述安置孔相连通以共同形成所述安装腔；
阀体，安装于所述第二环状支撑座内孔，且位于所述进气座上方；
其中，所述阀体与所述进气座一体设置。
在一实施例中，所述阀体上端侧壁与所述第二环状支撑座内孔的内壁螺纹连接；和/或，
所述第二环状支撑座包括支撑座筒体和自所述支撑座筒体上端面向上延伸设置的第二隔磁套筒，所述支撑座筒体的上端面与所述壳体下端面密封抵接，所述第二隔磁套筒的上端伸入至所述线圈内孔，所述静衔铁的下端与所述动衔铁的上端均安装于所述第二隔磁套筒内，且所述静衔铁的侧壁与所述第二隔磁套筒的内壁密封抵接；和/或，
所述阀体上端面贯设有第二安装孔，所述第二安装孔呈台阶设置，以形成朝上设置的抵接台阶面，所述比例流量阀还包括第一夹装组件，所述第一夹装组件呈环状设置，且位于所述抵接台阶面，所述第一夹装组件的外圈与所述第二安装孔内壁面密封抵接，所述第一夹装组件形成有第一环状夹装空间，所述密封环的内圈密封套装于所述阀芯组件，所述密封环的外圈夹装于所述第一环状夹装空间。
在一实施例中，所述比例流量阀还包括过渡块，所述过渡块处于所述安置孔内且位于所述线圈下方，所述过渡块密封套装于所述第二隔磁套筒的下端，所述过渡块的侧壁与所述安置孔的侧壁密封抵接，所述过渡块的下端面安装至所述支撑座筒体的上端面；和/或，
所述支撑座筒体的内孔设置为上小下大的锥形孔，所述阀芯组件的下端呈台阶设置，以形成朝上设置的第三环状台阶面，所述预紧力结构包括环状弹片，所述环状弹片的内圈与所述第三环状台阶面相抵接，所述环状弹片的外圈固定于所述阀体上端面。
在一实施例中，所述阀芯下端面贯设有连接孔；
所述动衔铁下端面设有沿上下向延伸设置的第三安装孔；
所述阀芯组件还包括连接柱，所述连接柱的上端安装于所述第三安装孔内，所述连接柱的下端插装于所述连接孔内，所述连接柱内形成有所述导气通道。
在一实施例中，所述连接柱呈台阶设置，以形成朝上设置的第四台阶面，所述第四台阶面与所述动衔铁下端面之间形成第二环状安装空间；
所述安装腔形成有朝下设置的第五台阶面，所述第五台阶面位于所述第四台阶面下方；
所述预紧力结构包括环状弹片，所述环状弹片的内圈夹装于所述第二环状安装空间内，所述环状弹片的外圈与所述第五台阶相抵接。
在一实施例中，所述连接柱还形成有朝下设置的第六台阶面，所述第六台阶面与所述阀芯上端面之间形成第三环状安装空间；
所述安装腔形成有朝下设置的第七环状台阶面，所述七环状台阶面设置有第二夹装组件，所述第二夹装组件呈环状设置，所述第二夹装组件的外圈与所述安装腔的内壁面密封抵接，所述第二夹装组件形成有第四环状夹装空间；
所述密封环的内圈夹装于所述第三环状安装空间内，所述密封环的外圈夹装于所述第四环状夹装空间内。
本申请提供的技术方案中，因为进气通道与所述导气通道相连通，以将所述进气通道的进气口的气体引入到密闭的上环形安装腔内，使密封环对所述阀芯组件产生一个向下的压力，因为所述预紧力结构对所述阀芯组件提供一个向下的预紧力，当所述比例电磁阀没有工作时，所述压力和所述预紧力形成一个向下的合力，使得所述阀芯组件的下端与所述进气座的上端密封抵接，避免所述比例电磁阀漏气，当所述比例电磁阀工作时，所述阀芯组件受到所述电磁铁组件提供的向上的电磁力的作用，且所述进气口的气压对所述阀芯组件提供一个向上的推力，当所述出气间隙不存在背压时，所述压力、所述预紧力、所述电磁力及所述推力四个力相互平衡，使得所述阀芯组件可以稳定在工作位置，当所述出气间隙存在背压，所述背压为所述阀芯提供一个向上的背压力，此时所述压力、预紧力、电磁力、推力及所述背压力五个力平衡，使得阀芯仍然可以稳定在工作位置，从而使得所述比例阀在不同的工况下稳定工作，解决了高背压对比例流量阀影响，效果好。
 附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本申请提供的比例流量阀的第一实施例的结构示意图；
图2为本申请提供的比例流量阀的第二实施例的结构示意图；
图3为本申请提供的比例流量阀的第三实施例的结构示意图；
图4为图1中环状弹片一实施例的结构示意图；
图5为图1中环状弹片另一实施例的结构示意图；
图6为本申请提供的比例流量阀中电磁力与电磁铁气隙曲线关系图；
图7为本申请提供的比例流量阀中预紧力与阀芯开度曲线关系图；
图8为本申请提供的比例流量阀中各个力与所述阀芯位移曲线关系图。
附图标号说明：
标号 名称 标号 名称
100 比例流量阀 351 第四台阶面
1 阀壳体组件 352 第六台阶面
11 第一环状台阶面 41 密封环
12 壳体 51 环状弹片
13 第二环状支撑座 6 进气座
131 支撑座筒体 61 进气通道
132 第二隔磁套筒 62 出气通道
14 阀体 7 非金属隔磁片
141 抵接台阶面 8 第一隔磁套筒
15 第五台阶面 9 第一环状支撑座
16 第七环状台阶面 10 第一夹装组件
2 电磁铁组件 101 过渡块
21 线圈 102 第二夹装组件
22 静衔铁 a 环形安装腔
31 动衔铁 a1 上环形安装腔
311 第一安装孔 a2 下环形安装腔
32 阀芯 b 导气通道
33 第二环状台阶面 b1 第一导气通道段
34 第三环状台阶面 b2 第二导气通道段
35 连接柱    
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
本申请的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，若本申请实施例中有涉及方向性指示（诸如上、下、左、右、前、后……），则该方向性指示仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本申请实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，全文中出现的“和/或”的含义，包括三个并列的方案，以“A和/或B”为例，包括A方案、或B方案、或A和B同时满足的方案。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
比例流量阀中流量输出值与阀芯开度成线性关系，而阀芯开度经过中间转换机构与输入电信号成线性关系，从而确定了流量输出值与输入信号的线性关系。
普通电磁阀使用电磁式线圈与线性弹簧结构，通常作为开关阀使用，即电磁线圈通电后克服弹簧力打开阀芯，由于电磁线圈产生的电磁力与气隙为指数关系，而线性弹簧与压缩量或者拉伸量线性关系，同等位移下，电磁力增加值比线性弹簧增加值大，所以可直接将阀芯开口打开到最大。但是难以满足比例流量阀在阀口打开过程中稳定在某一位置要求，因此无法实现流量输出值与输入信号的线性关系，无法实现流量的比例调节。
在某些工况下，例如转运呼吸机，通常在比例阀后使用文丘里喷嘴引入空气，但是经过比例阀的气体在经过文丘里喷嘴时会产生较大的背压，普通比例阀在高背压工况下无法正常工作，无法实现流量的比例调节。
到目前为止，市场上尚没有比例流量阀能解决上述问题。因此，需要新设计一种既能解决高背压影响，又能稳定工作的比例流量阀。
本申请提供一种比例流量阀，其中，图1至图5为本申请提供的比例流量阀的实施例的结构示意图。
请参阅图1至图3，所述比例流量阀100包括阀壳体组件1、电磁铁组件2、阀芯组件、密封环结构及预紧力结构，所述阀壳体组件1形成有下端开口的安装腔，所述安装腔的开口端形成有位于其中部位置的进气座6，所述进气座6内形成有上下向延伸的进气通道61，所述电磁铁组件2设于所述安装腔的上端，用以提供向上的磁吸力，所述阀芯组件设于所述安装腔内，且处于所述安装腔的中部位置，所述阀芯组件与所述安装腔的内壁面之间形成环形安装腔a，在所述磁吸力的驱动下，所述阀芯组件具有向上的活动行程，所述阀芯组件内形成有导气通道b，所述导气通道b的入口形成在所述阀芯组件的下端，且与所述进气通道61连通，出口形成在所述阀芯组件的侧端，所述密封环结构包括密封设于所述环形安装腔a内的密封环41，所述密封环41的内圈套装于所述阀芯组件，所述密封环41的外圈固定安装于所述安装腔内，以将所述环形安装腔a分隔成密闭的上环形安装腔a1和下环形安装腔a2，所述上环形安装腔a1连通所述导气通道b的出口，所述预紧力结构设于所述阀芯组件与所述安装腔的内壁之间，用以对所述阀芯组件提供向下的预紧力，其中，所述阀芯组件的下端与所述进气座6的上端之间可形成连通所述下环形安装腔a2的出气气隙。
本申请提供的技术方案中，因为进气通道61与所述导气通道b相连通，以将所述进气通道61的进气口的气体引入到密闭的上环形安装腔a1内，使密封环41对所述阀芯组件产生一个向下的压力，因为所述预紧力结构对所述阀芯组件提供一个向下的预紧力，当所述比例电磁阀没有工作时，所述压力和所述预紧力形成一个向下的合力，使得所述阀芯组件的下端与所述进气座6的上端密封抵接，避免所述比例电磁阀漏气，当所述比例电磁阀工作时，所述阀芯组件受到所述电磁铁组件2提供的向上的电磁力的作用，且所述进气口的气压对所述阀芯组件提供一个向上的推力，当所述出气间隙不存在背压时，所述压力、所述预紧力、所述电磁力及所述推力四个力相互平衡，使得所述阀芯组件可以稳定在工作位置，当所述出气间隙存在背压，所述背压为所述阀芯提供一个向上的背压力，此时所述压力、预紧力、电磁力、推力及所述背压力五个力平衡，使得阀芯仍然可以稳定在工作位置，从而使得所述比例阀在不同的工况下稳定工作，解决了高背压对比例流量阀100影响，效果好。
需要说明的是，所述进气座6设有沿上下向延伸设置的出气通道62，当所述阀芯组件向上活动时，所述阀芯组件下端与所述进气座6上端形成所述出气气隙，所述出气气隙连通所述进气通道61和所述出气通道62，以将实现排气。
为了使得所述预紧力结构能够为所述阀芯组件提供预紧力，且实现比例流量控制，依据出气气隙开度比例和电流变化比率，在电磁力曲线上确定电磁力曲线，该电磁力曲线非线性,，因此需要所述预紧力曲线变化规律与所述电磁力曲线相匹配，才能实现近似的线性关系，因此，参照图5和图6，所述预紧力结构包括环状弹片51，所述环状弹片51的内端固定于所述阀芯组件，外端固定于所述安装腔的内壁，使得所述环状弹片51易于发生形变，从而便于为所述阀芯组件提供预紧力，所述环状弹片51的环状面设有镂空图案组合，所述镂空图案组合为中心对称结构，且所述镂空图案组合包括多个镂空图案单元，所述镂空图案单元的数量为2以上自然数的整数倍，如此使得所述预紧力结构能够为所述阀芯组件提供预紧力，且使得所述预紧力与位移的关系曲线与电磁力曲线规律一致，便于实现比例流量控制。
所述电磁铁组件2包括沿上下向延伸设置且固定安装于所述安装腔内的线圈21及固定安装于所述线圈21内孔中的静衔铁22，在所述线圈21通电时，所述静衔铁22形成所述磁吸力，所述阀芯组件包括动衔铁31及阀芯32，所述动衔铁31夹设于所述静衔铁22与所述阀芯32之间，所述动衔铁31的上端与所述静衔铁22的下端间隔设置，以形成电磁铁气隙c，所述动衔铁31的下端与所述阀芯32的上端相连接，其中，所述出气气隙形成于所述阀芯32的下端面与所述进气座6的上端面之间，如此设置，因为所述动衔铁31的下端与所述阀芯32的上端相连接，使得所述动衔铁31与所述阀芯32的运动状态一致，在所述线圈21通电时，所述静衔铁22形成所述磁吸力，通过改变所述电磁铁气隙c的大小，改变磁吸力的大小，所述电磁铁气隙c变化量同时为所述阀芯32活动的距离，所述磁吸力吸引所述动衔铁31向上运动，从而带动所述阀芯32向上运动，使得所述阀芯32的下端面与所述进气座6的上端面之间形成所述出气气隙，如此可以将自所述进气通道61进入的气体经过所述出气气隙排出。
具体地，所述导气通道b形成于所述阀芯32和所述动衔铁31，如此设置，结构简单且易于加工。
在一实施例中，所述阀芯32下端面贯设有第一导气通道段b1，所述动衔铁31下端面设有沿上下向延伸设置的第一安装孔311，所述第一安装孔311的侧壁面设有第二导气通道段b2，所述阀芯32的上端安装于所述第一安装孔311内，且所述第一导气通道段b1与所述第二导气通道段b2相连通，以共同形成所述导气通道b，如此设置，外界的气体自所述进气通道61依次进入所述第一导气通道段b1、所述第二导气通道段b2，最终汇聚于密闭的所述上环形安装腔a1内，所述汇聚的气体使所述密封环41对所述阀芯32产生一个向下的压力，使得所述阀芯32的下端与所述进气座6的上端密封抵接，避免所述比例流量阀100泄露。
需要说明的是，所述导气通道b还可以形成于所述阀芯32，如此设置，结构简单易于加工。
参照图3，所述动衔铁31位于所述线圈21内孔的下端，且所述动衔铁31的上端与所述静衔铁22的下端之间设置有非金属隔磁片7，如此设置，起到缓冲作用，避免在电磁力的作用下，所述动衔铁31与所述静衔铁22碰撞发生损坏。
参照图1和图2，所述动衔铁31至少部分位于所述线圈21内，且具有位于所述线圈21内的安装段，所述比例流量阀100还包括沿上下向延伸设置的第一隔磁套筒8，所述第一隔磁套筒8设于所述线圈21与所述动衔铁31之间，且至少部分呈包覆所述安装段设置，如此设置，通过所述第一隔磁套筒8包覆所述安装段，避免所述线圈21通电后导致所述动衔铁31产生电磁力，影响所述动衔铁31在所述静衔铁22的电磁力作用下的活动的灵敏性。
需要说明的是实现隔磁效果的材质有很多，比如，硅钢材质，不锈钢材质及铜，在本申请中，所述第一隔磁套筒8的材质选用铜。
在一实施例中，所述第一隔磁套筒8的上端位于所述线圈21内孔，所述第一隔磁套筒8的下端突伸出于所述线圈21的下端，所述静衔铁22的下端与所述动衔铁31的上端均安装于所述第一隔磁套筒8内，因为所述静衔铁22的侧壁与所述第一隔磁套筒8的内壁密封抵接，如此设置，避免所述静衔铁22与所述第一隔磁套筒8漏气，影响所述比例流量阀100的气密性。
参照图1和图2，所述导气通道b形成于所述阀芯32和所述动衔铁31，所述动衔铁31的侧壁与所述第一隔磁套筒8的外侧壁之间形成过气间隙，因为所述过气间隙连通所述电磁铁气隙c及所述导气通道b的出口与所述上环形安装腔a1，使得外界的气体自所述进气通道61经过所述电磁铁气隙c及所述导气通道b和所述过气间隙能够汇聚于密闭的所述上环形安装腔a1内，所述汇聚的气体使所述密封环41对所述阀芯32产生一个向下的压力，使得所述阀芯32的下端与所述进气座6的上端密封抵接，避免所述比例流量阀100泄露。
参照图1，所述安装腔呈台阶设置，以形成朝下设置的第一环状台阶面11，所述比例流量阀100还包括位于所述第一环状台阶面11下方的第一环状支撑座9，所述第一环状支撑座9外圈与所述安装腔内侧壁密封抵接，所述第一环状支撑座9内圈套装于所述阀芯组件，且所述第一环状支撑座9的上端面与所述第一环状台阶面11之间形成第一环状安装空间，所述密封环41夹装于所述第一环状安装空间，如此设置，实现了所述密封环41的安装。
在一实施例中，所述第一环状支撑座9的内孔设置为上小下大的锥形孔，所述阀芯组件的下端自所述锥形孔下端伸出与所述进气座6上端面活动抵接，所述阀芯组件的下端呈台阶设置，以形成朝上设置的第二环状台阶面33，所述预紧力结构包括环状弹片51，所述环状弹片51的内圈与所述第二环状台阶面33抵接，所述环状弹片51的外圈固定于所述第一环状支撑座9的下端面，因为所述第二环状台阶面33位于所述第一环状支撑座9的下端面的上方，使得所述环状弹片51对所述阀芯组件产生向下的预紧力，效果好，且所述锥形孔呈上下下大设置，为所述环状弹片51提供了活动空间。
参照图2，所述阀壳体组件1包括壳体12、第二环状支撑座13及阀体14，所述壳体12下端面贯设有沿上下向延伸设置的安置孔，所述线圈21安装于所述安置孔内，所述第二环状支撑座13安装于所述壳体12下端，所述第二环状支撑座13内孔与所述安置孔相连通以共同形成所述安装腔，所述阀体14安装于所述第二环状支撑座13内孔，且位于所述进气座6上方，其中，所述阀体14与所述进气座6一体设置，以便于精准加工。
具体地，所述阀体14上端侧壁与所述第二环状支撑座13内孔的内壁螺纹连接，如此设置，既实现了所述阀体14与所述第二环状支撑座13的密封连接且拆装方便。
参照图2，所述第二环状支撑座13包括支撑座筒体131和自所述支撑座筒体131上端面向上延伸设置的第二隔磁套筒132，所述支撑座筒体131的上端面与所述壳体12下端面密封抵接，所述第二隔磁套筒132的上端伸入至所述线圈21内孔，所述静衔铁22的下端与所述动衔铁31的上端均安装于所述第二隔磁套筒132内，且所述静衔铁22的侧壁与所述第二隔磁套筒132的内壁密封抵接，如此设置，通过所述第二隔磁套筒132包覆所述动衔铁31的上端，避免所述线圈21通电后导致所述动衔铁31产生电磁力，影响所述动衔铁31在所述静衔铁22的电磁力作用下的活动的灵敏性。
为了安装所述密封环41，参照图2，所述阀体14上端面贯设有第二安装孔，所述第二安装孔呈台阶设置，以形成朝上设置的抵接台阶面141，所述比例流量阀100还包括第一夹装组件10，所述第一夹装组件10呈环状设置，且位于所述抵接台阶面141，所述第一夹装组件10的外圈与所述第二安装孔内壁面密封抵接，所述第一夹装组件10形成有第一环状夹装空间，所述密封环41的内圈密封套装于所述阀芯组件，所述密封环41的外圈夹装于所述第一环状夹装空间，如此设置实现了所述密封环41的安装。
为了使得所述第二环状支撑座13安装的更稳固，所述比例流量阀100还包括过渡块101，所述过渡块101处于所述安置孔内且位于所述线圈21下方用以支撑线圈21，所述过渡块101密封套装于所述第二隔磁套筒132的下端，所述过渡块101的侧壁与所述安置孔的侧壁密封抵接，所述过渡块101的下端面安装至所述支撑座筒体131的上端面，如此设置，通过所述过渡块101连接所述支撑座筒体131，使得所述第二环状支撑座13安装的更稳固。
参照图2，所述支撑座筒体131的内孔设置为上小下大的锥形孔，所述阀芯组件的下端呈台阶设置，以形成朝上设置的第三环状台阶面34，所述预紧力结构包括环状弹片51，所述环状弹片51的内圈与所述第三环状台阶面34相抵接，所述环状弹片51的外圈固定于所述阀体14上端面，如此设置，，使得所述环状弹片51对所述阀芯组件产生向下的预紧力，效果好，且所述锥形孔呈上下下大设置，为所述环状弹片51提供了活动空间。
为了避免所述过渡块101相对所述支撑座筒体131转动，所述过渡块101的下端面与所述支撑座筒体131的上端面之间还设置有止转结构，如此设置，避免所述过渡块101相对所述支撑座筒体131转动，保证了所述比例流量阀100的气密性，效果好。
需要说明的是，所述止转结构可以为相互配合的卡凸和卡槽，具体地，在本申请中，所述止转结构为销钉，通过所述销钉实现对所述过渡块101和所述支撑座筒体131的止转定位，防止所述过渡块101相对所述支撑座筒体131转动。
参照图3，所述阀芯32下端面贯设有连接孔，所述动衔铁31下端面设有沿上下向延伸设置的第三安装孔，所述阀芯组件还包括连接柱35，所述连接柱35的上端安装于所述第三安装孔内，所述连接柱35的下端插装于所述连接孔内，所述连接柱35内形成有所述导气通道b，如此设置，通过所述连接柱35连接所述阀芯32和所述动衔铁31，且所述导气通道b设于所述连接柱35，结构简单，易于加工。
在一实施例中，所述连接柱35呈台阶设置，以形成朝上设置的第四台阶面351，所述第四台阶面351与所述动衔铁31下端面之间形成第二环状安装空间，所述安装腔形成有朝下设置的第五台阶面15，所述第五台阶面15位于所述第四台阶面351下方，所述预紧力结构包括环状弹片51，所述环状弹片51的内圈夹装于所述第二环状安装空间内，所述环状弹片51的外圈与所述第五台阶面15相抵接，如此设置，实现了所述环状弹片51的安装，且使得所述环状弹片51在初始位置就对所述阀芯32作用有预紧力，使得所述比例流量阀100的密封效果好。
需要说明的是，上述所述环状弹片51的内圈夹装于所述第二环状安装空间，所述环状弹片51的内圈可在所述第二环状安装空间沿上下向活动。具体地，参照图3，所述环状弹片51的内圈抵接于所述第四台阶面351上，如此便于所述环状弹片51活动，效果好。
在一实施例中，所述连接柱35还形成有朝下设置的第六台阶面352，所述第六台阶面352与所述阀芯32上端面之间形成第三环状安装空间，所述安装腔形成有朝上设置的第七环状台阶面16，所述第七环状台阶面16设置有第二夹装组件102，所述第二夹装组件102呈环状设置，所述第二夹装组件102的外圈与所述安装腔的内壁面密封抵接，所述第二夹装组件102形成有第四环状夹装空间，所述密封环41的内圈夹装于所述第三环状安装空间内，所述密封环41的外圈夹装于所述第四环状夹装空间内如此设置，实现了所述密封环41的安装，效果好。
需要说明的是，在本申请中，所述出气气隙指的是比例流量阀的阀芯开度，所述静衔铁下端与动衔铁端部间隔形成的间隙为电磁铁气隙，通过改变电磁铁气隙，改变电磁力，该气隙变化量同时为阀芯变化量，参照图6至图8，所述电磁力与气隙变化量（等于阀口开度）成二次方反比关系，所述预紧力与所述阀口开度同样成二次方反比关系，且所述电磁力曲线与所述预紧力曲线的变化规律相同，电磁力曲线与预紧力曲线之间的间距始终是相同的，使得为了与所述电磁力和所述预紧力共同作用实现阀芯平衡的力为一个定值，通过调控改变电磁力曲线与预紧力曲线之间的间距，使得本申请的比例流量阀可以适用于有背压和无背压的工况，效果好。
以上所述仅为本申请的优选实施例，并非因此限制本申请的专利范围，凡是在本申请的构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (13)

  1. 一种比例流量阀，其中，包括：
    阀壳体组件，形成有下端开口的安装腔，所述安装腔的开口端形成有位于其中部位置的进气座，所述进气座内形成有上下向延伸的进气通道；
    电磁铁组件，设于所述安装腔的上端，用以提供向上的磁吸力；
    阀芯组件，设于所述安装腔内，且处于所述安装腔的中部位置，所述阀芯组件与所述安装腔的内壁面之间形成环形安装腔，在所述磁吸力的驱动下，所述阀芯组件具有向上的活动行程，所述阀芯组件内形成有导气通道，所述导气通道的入口形成在所述阀芯组件的下端，且与所述进气通道连通，出口形成在所述阀芯组件的侧端；
    密封环结构，包括密封设于所述环形安装腔内的密封环，所述密封环的内圈套装于所述阀芯组件，所述密封环的外圈固定安装于所述安装腔内，以将所述环形安装腔分隔成密闭的上环形安装腔和下环形安装腔，所述上环形安装腔连通所述导气通道的出口；以及，
    预紧力结构，设于所述阀芯组件与所述安装腔的内壁之间，用以对所述阀芯组件提供向下的预紧力；
    其中，所述阀芯组件的下端与所述进气座的上端之间可形成连通所述下环形安装腔的出气气隙。
  2. 如权利要求1所述的比例流量阀，其中，所述预紧力结构包括环状弹片，所述环状弹片的内端固定于所述阀芯组件，外端固定于所述安装腔的内壁，所述环状弹片的环状面设有镂空图案组合，所述镂空图案组合为中心对称结构，且所述镂空图案组合包括多个镂空图案单元，所述镂空图案单元的数量为2以上自然数的整数倍；和/或，
    所述电磁铁组件包括沿上下向延伸设置且固定安装于所述安装腔内的线圈及固定安装于所述线圈内孔中的静衔铁，在所述线圈通电时，所述静衔铁形成所述磁吸力，所述阀芯组件包括动衔铁及阀芯，所述动衔铁夹设于所述静衔铁与所述阀芯之间，所述动衔铁的上端与所述静衔铁的下端间隔设置，以形成电磁铁气隙，所述动衔铁的下端与所述阀芯的上端相连接，其中，所述出气气隙形成于所述阀芯的下端面与所述进气座的上端面之间。
  3. 如权利要求2所述的比例流量阀，其中，所述阀芯下端面贯设有第一导气通道段，所述动衔铁下端面设有沿上下向延伸设置的第一安装孔，所述第一安装孔的侧壁面设有第二导气通道段，所述阀芯的上端安装于所述第一安装孔内，且所述第一导气通道段与所述第二导气通道段相连通，以共同形成所述导气通道；和/或，
    所述动衔铁位于所述线圈内孔的下端，且所述动衔铁的上端与所述静衔铁的下端之间设置有非金属隔磁片；和/或，
    所述动衔铁至少部分位于所述线圈内，且具有位于所述线圈内的安装段；
    所述比例流量阀还包括沿上下向延伸设置的第一隔磁套筒，所述第一隔磁套筒设于所述线圈与所述动衔铁之间，且至少部分呈包覆所述安装段设置。
  4. 如权利要求3所述的比例流量阀，其中，所述第一隔磁套筒的上端位于所述线圈内孔，所述第一隔磁套筒的下端突伸出于所述线圈的下端；
    所述静衔铁的下端与所述动衔铁的上端均安装于所述第一隔磁套筒内，所述静衔铁的侧壁与所述第一隔磁套筒的内壁密封抵接。
  5. 如权利要求4所述的比例流量阀，其中，所述导气通道形成于所述阀芯和所述动衔铁；
    所述动衔铁的侧壁与所述第一隔磁套筒的外侧壁之间形成过气间隙，所述过气间隙连通所述电磁铁气隙及所述导气通道的出口与所述上环形安装腔。
  6. 如权利要求1所述的比例流量阀，其中，所述安装腔呈台阶设置，以形成朝下设置的第一环状台阶面；
    所述比例流量阀还包括位于所述第一环状台阶面下方的第一环状支撑座，所述第一环状支撑座外圈与所述安装腔内侧壁密封抵接，所述第一环状支撑座内圈套装于所述阀芯组件，且所述第一环状支撑座的上端面与所述第一环状台阶面之间形成第一环状安装空间，所述密封环夹装于所述环状空间内。
  7. 如权利要求6所述的比例流量阀，其中，所述第一环状支撑座的内孔设置为上小下大的锥形孔；
    所述阀芯组件的下端自所述锥形孔下端伸出与所述进气座上端面活动抵接，所述阀芯组件的下端呈台阶设置，以形成朝上设置的第二环状台阶面；
    所述预紧力结构包括环状弹片，所述环状弹片的内圈与所述第二环状台阶面抵接，所述环状弹片的外圈固定于所述第一环状支撑座的下端面，且所述第二环状台阶面位于所述第一环状支撑座的下端面的上方。
  8. 如权利要求2所述的比例流量阀，其中，所述阀壳体组件包括：
    壳体，所述壳体下端面贯设有沿上下向延伸设置的安置孔，所述线圈安装于所述安置孔内；
    第二环状支撑座，安装于所述壳体下端，所述第二环状支撑座内孔与所述安置孔相连通以共同形成所述安装腔；
    阀体，安装于所述第二环状支撑座内孔，且位于所述进气座上方；
    其中，所述阀体与所述进气座一体设置。
  9. 如权利要求8所述的比例流量阀，其中，所述阀体上端侧壁与所述第二环状支撑座内孔的内壁螺纹连接；和/或，
    所述第二环状支撑座包括支撑座筒体和自所述支撑座筒体上端面向上延伸设置的第二隔磁套筒，所述支撑座筒体的上端面与所述壳体下端面密封抵接，所述第二隔磁套筒的上端伸入至所述线圈内孔，所述静衔铁的下端与所述动衔铁的上端均安装于所述第二隔磁套筒内，且所述静衔铁的侧壁与所述第二隔磁套筒的内壁密封抵接；和/或，
    所述阀体上端面贯设有第二安装孔，所述第二安装孔呈台阶设置，以形成朝上设置的抵接台阶面，所述比例流量阀还包括第一夹装组件，所述第一夹装组件呈环状设置，且位于所述抵接台阶面，所述第一夹装组件的外圈与所述第二安装孔内壁面密封抵接，所述第一夹装组件形成有第一环状夹装空间，所述密封环的内圈密封套装于所述阀芯组件，所述密封环的外圈夹装于所述第一环状夹装空间。
  10. 如权利要求9所述的比例流量阀，其中，所述比例流量阀还包括过渡块，所述过渡块处于所述安置孔内且位于所述线圈下方，所述过渡块密封套装于所述第二隔磁套筒的下端，所述过渡块的侧壁与所述安置孔的侧壁密封抵接，所述过渡块的下端面安装至所述支撑座筒体的上端面；和/或，
    所述支撑座筒体的内孔设置为上小下大的锥形孔，所述阀芯组件的下端呈台阶设置，以形成朝上设置的第三环状台阶面，所述预紧力结构包括环状弹片，所述环状弹片的内圈与所述第三环状台阶面相抵接，所述环状弹片的外圈固定于所述阀体上端面。
  11. 如权利要求2所述的比例流量阀，其中，所述阀芯下端面贯设有连接孔；
    所述动衔铁下端面设有沿上下向延伸设置的第三安装孔；
    所述阀芯组件还包括连接柱，所述连接柱的上端安装于所述第三安装孔内，所述连接柱的下端插装于所述连接孔内，所述连接柱内形成有所述导气通道。
  12. 如权利要求11所述的比例流量阀，其中，所述连接柱呈台阶设置，以形成朝上设置的第四台阶面，所述第四台阶面与所述动衔铁下端面之间形成第二环状安装空间；
    所述安装腔形成有朝下设置的第五台阶面，所述第五台阶面位于所述第四台阶面下方；
    所述预紧力结构包括环状弹片，所述环状弹片的内圈夹装于所述第二环状安装空间内，所述环状弹片的外圈与所述第五台阶相抵接。
  13. 如权利要求12所述的比例流量阀，其中，所述连接柱还形成有朝下设置的第六台阶面，所述第六台阶面与所述阀芯上端面之间形成第三环状安装空间；
    所述安装腔形成有朝下设置的第七环状台阶面，所述七环状台阶面设置有第二夹装组件，所述第二夹装组件呈环状设置，所述第二夹装组件的外圈与所述安装腔的内壁面密封抵接，所述第二夹装组件形成有第四环状夹装空间；
    所述密封环的内圈夹装于所述第三环状安装空间内，所述密封环的外圈夹装于所述第四环状夹装空间内。
PCT/CN2020/138890 2020-10-15 2020-12-24 一种比例流量阀 Ceased WO2022077765A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20957539.8A EP4201462B1 (en) 2020-10-15 2020-12-24 Proportional flow valve
BR112023006310A BR112023006310A2 (pt) 2020-10-15 2020-12-24 Válvula de fluxo proporcional.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011106344.2 2020-10-15
CN202011106344.2A CN112413136B (zh) 2020-10-15 2020-10-15 一种比例流量阀

Publications (1)

Publication Number Publication Date
WO2022077765A1 true WO2022077765A1 (zh) 2022-04-21

Family

ID=74854621

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/138890 Ceased WO2022077765A1 (zh) 2020-10-15 2020-12-24 一种比例流量阀

Country Status (4)

Country Link
EP (1) EP4201462B1 (zh)
CN (1) CN112413136B (zh)
BR (1) BR112023006310A2 (zh)
WO (1) WO2022077765A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115095620A (zh) * 2022-07-25 2022-09-23 深圳市安保医疗科技股份有限公司 一种弹片、比例阀及比例阀流量线性度优化方法
CN115492933A (zh) * 2022-05-19 2022-12-20 北京航天新立科技有限公司 一种无摩擦高稳定性比例电磁阀
EP4299958A1 (de) * 2022-06-13 2024-01-03 Innovatherm Prof. Dr. Leisenberg GmbH & Co. KG Ventil und verfahren zum betrieb

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4105528B1 (en) * 2021-06-18 2025-01-01 Fas Medic S.A. Pressure compensation valve
CN115539642B (zh) * 2021-06-30 2025-08-22 苏州仁甬得物联科技有限公司 一种双弹力精密流量控制机构
CN113388226B (zh) * 2021-07-14 2022-02-18 南京厚孚机械科技有限公司 高强耐冲击聚醚醚酮材料、制备方法及其密封组件阀门
CN113431949A (zh) * 2021-07-29 2021-09-24 深圳垦拓流体控制有限公司 一种微型比例阀
CN113418048A (zh) * 2021-07-30 2021-09-21 深圳垦拓流体控制有限公司 一种精密控制比例阀
CN113775810A (zh) * 2021-10-26 2021-12-10 苏州仁甬得物联科技有限公司 一种动平衡式大流量比例阀控制机构
EP4174350A1 (en) 2021-10-27 2023-05-03 Fas Medic S.A. Valve assembly and method
CN115451177A (zh) * 2022-09-22 2022-12-09 四川航天烽火伺服控制技术有限公司 一种气动高速开关阀
CN116991095B (zh) * 2023-06-30 2024-08-23 江苏汇智高端工程机械创新中心有限公司 一种can总线电控单元和控制方法
WO2025030428A1 (zh) * 2023-08-09 2025-02-13 英嘉动力科技无锡有限公司 一种比例阀
CN118757600A (zh) * 2024-07-18 2024-10-11 河南航天液压气动技术有限公司 具有膜片弹簧结构的电磁阀
CN119244804B (zh) * 2024-12-06 2025-04-11 苏州仁甬得物联科技有限公司 一种微型比例阀
CN119664929B (zh) * 2025-02-20 2025-06-24 常州高凯电子有限公司 提高流量稳定性的阀门及应用其的质量流量控制器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201963898U (zh) * 2011-03-18 2011-09-07 重庆环茂电磁阀有限公司 中高压锥度密封分步直动式电磁阀
JP2012211679A (ja) * 2011-03-31 2012-11-01 Fuji Koki Corp 電動弁
CN104421436A (zh) * 2013-08-19 2015-03-18 株式会社鹭宫制作所 流量控制阀
CN206555533U (zh) * 2017-03-04 2017-10-13 沈阳航天新光集团有限公司 一种高压电磁启动装置
CN107965488A (zh) * 2017-11-25 2018-04-27 宁波文泽机电技术开发有限公司 一种插装式比例流量阀
CN111742169A (zh) * 2018-02-20 2020-10-02 株式会社不二工机 电动阀
CN112245755A (zh) * 2020-11-13 2021-01-22 中国工程物理研究院机械制造工艺研究所 一种呼吸机用比例阀

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6505812B1 (en) * 2000-11-17 2003-01-14 Mks Instruments, Inc. Solenoid valve
JP3893295B2 (ja) * 2001-03-28 2007-03-14 シーケーディ株式会社 電磁比例弁
DE10200915A1 (de) * 2001-03-30 2002-10-02 Continental Teves Ag & Co Ohg Elektromagnetventil für Fahrzeugbremsanlagen
DE102008006380A1 (de) * 2008-01-29 2009-07-30 Hydac Fluidtechnik Gmbh Vorgesteuertes Ventil, insbesondere Proportional-Drosselventil
DE102011105586B4 (de) * 2011-06-27 2014-12-24 Staiger Gmbh & Co. Kg Ventil
CN102661430B (zh) * 2012-05-22 2014-01-22 黄冈力达实业有限公司 补偿式微控电磁阀
DE102013009838B3 (de) * 2013-06-12 2014-07-10 Staiger Gmbh & Co. Kg Zweiwegeventil
DE102016211516A1 (de) * 2016-06-27 2017-12-28 Staiger Gmbh & Co. Kg Ventil
DE102016015520A1 (de) * 2016-12-23 2018-06-28 Andreas Stihl Ag & Co. Kg Elektromagnetisches Ventil
DE102018008410A1 (de) * 2018-10-25 2020-04-30 Andreas Stihl Ag & Co. Kg Elektromagnetisches Ventil, Verfahren zum Betrieb eines elektromagnetischen Ventils
CN109340403B (zh) * 2018-12-17 2023-10-20 成都汉兴科技有限公司 一种电动阀
CN212564644U (zh) * 2020-06-03 2021-02-19 星豹(北京)氢能源科技股份有限公司 一种用于流量调节的比例电磁阀

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201963898U (zh) * 2011-03-18 2011-09-07 重庆环茂电磁阀有限公司 中高压锥度密封分步直动式电磁阀
JP2012211679A (ja) * 2011-03-31 2012-11-01 Fuji Koki Corp 電動弁
CN104421436A (zh) * 2013-08-19 2015-03-18 株式会社鹭宫制作所 流量控制阀
CN206555533U (zh) * 2017-03-04 2017-10-13 沈阳航天新光集团有限公司 一种高压电磁启动装置
CN107965488A (zh) * 2017-11-25 2018-04-27 宁波文泽机电技术开发有限公司 一种插装式比例流量阀
CN111742169A (zh) * 2018-02-20 2020-10-02 株式会社不二工机 电动阀
CN112245755A (zh) * 2020-11-13 2021-01-22 中国工程物理研究院机械制造工艺研究所 一种呼吸机用比例阀

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4201462A4 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115492933A (zh) * 2022-05-19 2022-12-20 北京航天新立科技有限公司 一种无摩擦高稳定性比例电磁阀
EP4299958A1 (de) * 2022-06-13 2024-01-03 Innovatherm Prof. Dr. Leisenberg GmbH & Co. KG Ventil und verfahren zum betrieb
CN115095620A (zh) * 2022-07-25 2022-09-23 深圳市安保医疗科技股份有限公司 一种弹片、比例阀及比例阀流量线性度优化方法
CN115095620B (zh) * 2022-07-25 2023-08-15 深圳市安保医疗科技股份有限公司 一种弹片、比例阀及比例阀流量线性度优化方法

Also Published As

Publication number Publication date
EP4201462A4 (en) 2024-01-24
EP4201462B1 (en) 2026-08-19
EP4201462A1 (en) 2023-06-28
CN112413136A (zh) 2021-02-26
CN112413136B (zh) 2021-06-25
BR112023006310A2 (pt) 2023-05-09

Similar Documents

Publication Publication Date Title
CN112413136B (zh) 一种比例流量阀
US7748683B1 (en) Electrically controlled proportional valve
US20090250021A1 (en) Fluid control systems employing compliant electroactive materials
CN103867780B (zh) 一种燃气电磁比例阀
TW200905074A (en) Magnetically sequenced pneumatic motor
JP2003120832A (ja) 圧電素子駆動式金属ダイヤフラム型制御弁
WO2021248780A1 (zh) 一种微小流量阀门控制机构
KR20190074162A (ko) 수소용 2단감압 전자식 레귤레이터
CN213899897U (zh) 一种比例流量阀
US4832313A (en) Solenoid valve
CN112245755A (zh) 一种呼吸机用比例阀
JPH02142981A (ja) 圧力バランス型電磁弁
CN115492933A (zh) 一种无摩擦高稳定性比例电磁阀
CN100462599C (zh) 流体控制用电磁阀
CN111692402A (zh) 用于燃气热水器的燃气比例阀和燃气热水器
KR102943690B1 (ko) 유체 제어 밸브
TW202041806A (zh) 螺線管泵
CN118257811A (zh) 一种端面密封的先导阀
CN2429673Y (zh) 电气阀门定位器
CN117605840A (zh) 一种适应高中低压的低功耗比例流量阀门装置
US11022233B2 (en) Magnetic latch throttle valve
JPS6256679A (ja) 電磁制御弁
TWM603073U (zh) 具有懸浮式閥桿的燃氣比例電磁閥
CN207750567U (zh) 一种先导式内排直通高压气体电磁阀
CN115614187A (zh) 燃气切断阀

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20957539

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202327020930

Country of ref document: IN

ENP Entry into the national phase

Ref document number: 2020957539

Country of ref document: EP

Effective date: 20230322

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112023006310

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112023006310

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20230404

NENP Non-entry into the national phase

Ref country code: DE