WO2022143734A1 - 电动阀 - Google Patents

电动阀 Download PDF

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Publication number
WO2022143734A1
WO2022143734A1 PCT/CN2021/142349 CN2021142349W WO2022143734A1 WO 2022143734 A1 WO2022143734 A1 WO 2022143734A1 CN 2021142349 W CN2021142349 W CN 2021142349W WO 2022143734 A1 WO2022143734 A1 WO 2022143734A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve core
valve
seat
assembly
screw rod
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/CN2021/142349
Other languages
English (en)
French (fr)
Inventor
张兴奎
兰云志
朱振山
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.)
Zhejiang Sanhua Climate and Appliance Controls Group Co Ltd
Original Assignee
Zhejiang Sanhua Climate and Appliance Controls Group 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 Zhejiang Sanhua Climate and Appliance Controls Group Co Ltd filed Critical Zhejiang Sanhua Climate and Appliance Controls Group Co Ltd
Priority to EP21914466.4A priority Critical patent/EP4273428A4/en
Priority to US18/270,482 priority patent/US12379033B2/en
Priority to KR1020237025063A priority patent/KR102826172B1/ko
Publication of WO2022143734A1 publication Critical patent/WO2022143734A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
    • 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
    • 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
    • F16K1/02—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 with screw-spindle
    • 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
    • F16K1/42—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
    • F16K1/465—Attachment of sealing rings to the 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
    • F16K1/48—Attaching valve members to screw-spindles
    • F16K1/487—Attaching valve members to screw-spindles by a fixing element extending in the axial direction of the spindle, e.g. a screw
    • 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
    • F16K31/004—Actuating devices; Operating means; Releasing devices actuated by piezoelectric 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
    • 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

Definitions

  • the present application relates to an electric component, in particular to an electric valve.
  • the electric valve can throttle the working fluid forward or reverse according to the needs of different working modes of the system.
  • the electric valve includes a screw rod and a valve core.
  • the inventor has known a structure in which two metal parts of the screw rod and the valve core are threadedly connected.
  • the screw rod can drive the valve core to perform linear reciprocating motion under the action of the thread.
  • the thread of the valve core is worn, reducing the service life of the electric valve.
  • the purpose of the present application is to provide an electric valve, which is beneficial to reduce thread wear and improve the service life of the electric valve.
  • An electric valve includes a valve part, the valve part comprises a screw rod and a valve core assembly, the screw rod is threadedly connected with the valve core assembly, the valve part has a valve port, and the screw rod can drive the The valve core assembly is close to or away from the valve port to adjust the opening degree of the valve port.
  • the screw rod is threadedly connected through the cooperation of the inner thread segment and the outer thread segment, and at least the material of the valve core assembly part corresponding to the inner thread segment includes a plastic material.
  • the present application provides an electric valve, including a screw rod and a valve core assembly, the screw rod has an external thread segment, the valve core assembly has an internal thread segment, and the valve core assembly and the screw rod are threadedly connected through the cooperation of the internal thread segment and the external thread segment , at least the material of the valve core assembly part corresponding to the inner thread segment includes plastic material, and by setting the material of the corresponding part of the inner thread segment of the valve core assembly to include plastic material, compared with the direct screw connection of the two metal parts of the screw rod and the valve core, it is beneficial to Reduce thread wear and improve the service life of the electric valve.
  • FIG. 1 is a schematic cross-sectional structure diagram of a first embodiment of an electric valve
  • Fig. 2 is a schematic cross-sectional structure diagram of the valve component in Fig. 1;
  • FIG. 3 is a schematic diagram of an exploded structure of the valve core assembly in the first embodiment of the electric valve
  • Fig. 4 is a schematic cross-sectional structure diagram of the valve core assembly in Fig. 1;
  • Fig. 5 is a sectional structure schematic diagram of the valve core in Fig. 4;
  • Fig. 6 is a three-dimensional schematic diagram of the connection seat in the first embodiment of the electric valve
  • Fig. 7 is a sectional structure schematic diagram of the connection seat in Fig. 6;
  • Fig. 8 is a schematic cross-sectional structure diagram of the valve core seat assembly in Fig. 1;
  • Fig. 9 is a three-dimensional schematic diagram of the valve core seat assembly in the first embodiment of the electric valve
  • FIG. 10 is another schematic cross-sectional structure diagram of the first embodiment of the electric valve
  • Fig. 11 is a partial enlarged structural schematic diagram of part A in Fig. 10;
  • FIG. 13 is a schematic cross-sectional structure diagram of the third embodiment of the electric valve.
  • the electric valve 100 includes a driving part 1 , a valve part 2 and a valve body part 3 , part of the valve part 2 is located in the valve body cavity 30 formed by the valve body part 3 , the valve part 2 is connected with the valve body part 3 , and the driving part 1 Located on the outer periphery of the valve member 2 , the driving member 1 is connected to the valve member 2 , and the electric valve 100 is electrically and/or signally connected to the outside through the driving member 1 .
  • the driving component 1 includes an outer casing 11 , a stator assembly 12 and an interface portion 13 .
  • the stator assembly 12 includes a coil winding 121
  • the interface portion 13 includes a first pin 131 .
  • the coil winding 121 , the first The pins 131 are injection-molded inserts, which are integrally injection-molded to form the outer casing 11 .
  • the interface portion 13 is integrally injection-molded with the outer casing 11 , one end of the first pin 131 is electrically connected to the coil winding 121 , and the other end of the first pin 131 is located in the socket cavity formed by the interface portion 13 for electrical connection with the outside world .
  • the interface portion 13 and the outer casing 11 may also be connected by means of assembly and fixation.
  • the driving component 1 further includes a buckle portion 14 , which is fixedly connected to the outer casing 11 , and the driving component 1 is connected to the valve component 2 through the buckle portion 14 .
  • the valve component 2 includes a rotor assembly 21 , a connecting seat 22 , a screw rod 23 , a valve core assembly 24 , a valve core seat assembly 25 and a sleeve 26 , the rotor assembly 21 is fixedly connected to one end of the screw rod 23 , and the screw rod 23 The other end is threadedly connected with the valve core assembly 24, the connecting seat 22 is located on the outer circumference of part of the screw rod 23 and the partial valve core assembly 24, the valve core seat assembly 25 is located on the outer circumference of the partial valve core assembly 24, the connecting seat 22 and the valve core seat assembly 25 is fixedly connected, the sleeve 26 is located on the outer circumference of the rotor assembly 21 , and the sleeve 26 is fixedly connected with the connection seat 22 .
  • the valve core seat assembly 25 includes a valve port portion, which forms a valve port 251
  • the valve core assembly 24 includes a valve core 241
  • the rotor assembly 21 can drive the valve core 241 through the screw rod 23 to linearly reciprocate along the axial direction of the valve member 2 .
  • the valve core 241 can move close to or away from the valve port 251 , so as to form throttling or on-off at the valve port 251 .
  • the rotor assembly 21 includes a rotor 211 and a connecting member 212 , the rotor 211 is fixedly connected with the connecting member 212 , and the connecting member 212 is fixedly connected with one end of the screw rod 23 .
  • the connecting piece 212 is an injection-molded insert, and the rotor 211 is formed by injection molding, and the rotor 211 and the connecting piece 212 are fixed by injection molding.
  • the connecting piece 212 and the lead screw 23 can be fixed by means of interference fit, welding, or gluing.
  • the valve core assembly 24 further includes a nut member 242.
  • the nut member 242 is made of a plastic material.
  • the nut member 242 can be integrally injection-molded.
  • the valve core 241 is located on the outer circumference of a part of the nut member 242.
  • the ground nut member 242 and the valve core 241 can be fixed by means of interference fit, glue, injection molding, or riveting.
  • the valve core 241 has a first hole 2411
  • the valve core 241 includes a first mounting portion 2412
  • the first mounting portion 2412 forms a first mounting cavity 2413 .
  • the first mounting cavity 2413 is connected to the first mounting cavity 2413 .
  • the first channel 2411 communicates with each other.
  • the nut member 242 includes a limit portion 244 and a threaded portion 245.
  • the limit portion 244 and the threaded portion 245 are integrally injection-molded.
  • the shape of the nut member 242 is substantially T-shaped.
  • the threaded portion 245 is located in the first installation cavity 2413.
  • An interference fit of the mounting portion 2412 realizes the fixed connection between the nut member 242 and the valve core 241; further, in order to strengthen the fixed connection between the valve core 241 and the nut member 242, the valve core 241 further includes a first riveting portion 2414, which is formed along the valve core. In the axial direction of 241, the first riveting portion 2414 is disposed higher than the first mounting portion 2412. Along the radial direction of the valve core 241, the first riveting portion 2414 is located on both sides of the first mounting portion 2412 and can be symmetrically distributed.
  • a first stepped portion 2415 is formed between the riveting portion 2414 and the first mounting portion 2412.
  • the first riveting portion 2414 is provided with a riveting protrusion 2416 for riveting, and the riveting protrusions 2416 are arranged at intervals.
  • a caulking groove 2417 is formed between the caulking protrusions 2416, and the purpose of providing the caulking groove 2417 is to realize the communication of the balance channel in the following.
  • the threaded portion 245 is located in the first installation cavity 2413 , the threaded portion 245 is in an interference fit with the first installation portion 2412 , the limiting portion 244 abuts against the first stepped portion 2415 , and the riveting convex portion 2416 is bent and pressed against the limiting portion 244 , so that the limiting portion 244 is pressed between the riveting convex portion 2416 and the first step portion 2415 to realize the fixed connection between the nut member 242 and the valve core 241 .
  • the nut member 242 also has a threaded hole 243.
  • the threaded hole 243 is arranged through the nut member 242.
  • An inner thread segment is provided on the peripheral side wall forming the threaded hole 243.
  • the other end of the screw rod 23 is provided with an inner thread segment.
  • the lead screw 23 extends into the threaded hole 243 , so that the external thread segment of the lead screw 23 is threadedly matched with the internal thread segment of the nut member 242 , so as to realize the threaded connection between the lead screw 23 and the valve core assembly 24 .
  • the screw rod 23 and the nut member 242 are provided in threaded connection, and the nut member 242 is made of plastic material, which is beneficial to reduce thread wear compared with the direct screw connection between the screw rod 23 and the valve core 241.
  • the connecting seat 22 includes a first accommodating part 221 , the first accommodating part 221 forms a first accommodating cavity 222 , and part of the screw rod 23 and part of the valve core assembly 24 are located in the first accommodating cavity 222, the first accommodating portion 221 includes a matching portion 223, the limiting portion 244 is located in the first accommodating cavity 222, the limiting portion 244 is a non-rotating body, the limiting portion 244 and the matching portion 223 can cooperate with each other, and the The circumferential rotation is limited, and the structure of the limiting portion 244 and the matching portion 223 can be various, as long as the circumferential rotation of the valve core assembly 24 can be limited.
  • the limiting portion 244 includes a side surface 2441 of the limiting portion.
  • the matching portion 223 includes a side surface 2231 of the matching portion.
  • the limiting portion 244 is located in the first accommodating cavity 222 so that the side surface 2441 of the limiting portion is connected to the side surface of the matching portion. 2231 is fitted to limit the circumferential rotation of the valve core assembly 24 . It should be noted that, in order to enable the valve core assembly 24 to perform linear reciprocating motion along the axis of the valve member 2, the axial height H of the fitting portion 223 needs to be set greater than the axial height h of the limiting portion 244.
  • the fitting portion The proportional relationship between the axial height H of the 223 and the axial height h of the limiting portion 244 can be designed and determined according to the specific movement stroke of the valve core assembly 24 .
  • the axial height H of the fitting portion 223 is 4.2 times the axial height h of the limiting portion 244 .
  • the valve part 2 further includes a support member 27 .
  • the support member 27 includes a support frame 271 , a bearing 272 and a sleeve 273 .
  • the support frame 271 has a placement cavity 274 , and the support frame 271 is fixedly connected to the connection seat 22 for placing The cavity 274 communicates with the first accommodating cavity 222 .
  • the support frame 271 and the connection base 22 are fixed by welding.
  • the support frame 271 and the connection base 22 can also be fixed by other means such as interference fit or glue.
  • the support frame 271 and the connection seat 22 can also be formed by integral processing.
  • the bearing 272 is located on the outer circumference of the lead screw 23, the bearing 272 is located in the placement cavity 274, and the bearing 272 is fixedly connected with the support frame 271.
  • the support frame 271 includes a second step portion 275 and a second rivet The pressing part 276, the bearing 272 is in contact with the second step part 275, the second riveting part 276 is bent and pressed on the bearing 272, so that the bearing 272 is pressed between the second riveting part 276 and the second step part 275, Thus, the bearing 272 and the support frame 271 are fixed.
  • the support member 27 may further include a first retaining ring 277 .
  • the first retaining ring 277 is located on the outer circumference of the screw rod 23 . 277 is located in the placement cavity 274, along the axial direction of the support member 27, the bearing 272 is located between the first retaining ring 277 and the second step portion 275, and the first retaining ring 277 is disposed closer to the second riveting portion 276 than the second step portion 275.
  • the second riveting portion 276 is bent and pressed against the first retaining ring 277 , so that the bearing 272 is pressed between the second stepped portion 275 and the first retaining ring 277 to realize the fixing of the bearing 272 .
  • the sleeve 273 is located on the outer circumference of the screw rod 23, and at least part of the sleeve 273 is located in the placement cavity 274.
  • the sleeve 273 is fixedly connected to the screw rod 23. Specifically, the sleeve 273 and the screw rod 23 can be fitted by interference fit or welding or glue. etc. to achieve fixation.
  • the screw rod 23 includes a flange portion 231, the flange portion 231 protrudes outward along the radial direction of the screw rod 23, and along the axial direction of the screw rod 23, the bearing 272 is located between the sleeve 273 and the flange portion 231, and the flange portion 231 is disposed closer to the connecting seat 22 than the sleeve 273, and the screw 23 is axially limited by the flange portion 231 and the sleeve 273.
  • the connecting seat 22 further includes a second accommodating portion 224 , and the second accommodating portion 224 forms a second accommodating cavity 225 .
  • the second accommodating cavity 225 is connected to the second accommodating cavity 225 .
  • a accommodating cavity 222 communicates with each other.
  • a part of the valve core seat assembly 25 is located in the second accommodating cavity 225, and the valve core seat assembly 25 and the connecting seat 22 can be fixedly connected by means of interference fit, welding, or gluing.
  • the valve core seat assembly 25 includes a valve core seat 252, a first sealing assembly 253, and a fixing seat 254.
  • the first sealing assembly 253 includes a first sealing ring 2531 and a first sealing member 2532.
  • the first sealing ring 2531 can pass through the polyether ether ketone. (PEEK) material is integrally injection-molded. Of course, the first sealing ring 2531 can also be made of other plastic materials with both hardness and elasticity.
  • the valve core seat 252 has a valve core cavity 256, part of the fixed seat 254 is located in the valve core cavity 256, and the fixed seat 254 is fixedly connected with the valve core seat 252, specifically, the fixed connection can be realized by means of interference fit or welding or glue. Referring to FIG.
  • part of the valve core seat 252 is located in the second accommodating cavity 225 of the connecting seat 22 , the valve core seat 252 is fixedly connected with the connecting seat 22 , and along the axial direction of the valve member 2 , the valve core seat 252 is located between the connecting seat 22 and the fixed seat 254.
  • the fixed seat 254 is fixedly assembled with the valve core seat 252 to form an accommodating groove, and a part of the first sealing component 253 is located in the accommodating groove.
  • a recess, part of the first sealing member 2532 is located in the first cavity formed by the first recess, along the radial direction of the first sealing component 253 , the first sealing member 2532 is pressed against the first recess and the inner wall surface of the valve core seat 252 In between, the first sealing member 2532 is in a sealing state.
  • the first sealing ring 2531 may not include the first concave portion, that is, the first sealing member 2532 is directly pressed between the outer side wall of the first sealing ring 2531 and the inner side wall surface of the valve core seat 252 .
  • the sealing method of the first sealing member 2531 is not limited to the above method, as long as a seal can be formed to prevent internal leakage between the valve core seat 252 and the fixed seat 254 .
  • the valve core seat 252 further includes a protruding portion 255 , which protrudes inwardly along the radial direction of the valve core seat 252 .
  • the first sealing assembly 253 is axially limited by the protruding portion 255 and the end face of the fixing seat 254 .
  • the definition of the axial limit includes the case where the first sealing assembly 253 is clamped and fixed between the protruding portion 255 and the fixing seat 254 .
  • part of the valve core 241 is located in the valve core cavity 256 , and the first sealing component 253 is located on the outer circumference of the valve core 241 , specifically, the first sealing ring 2531 is located at the outer circumference of the valve core 241 .
  • the radial width d of the protruding portion 255 is set to be smaller than the radial width D of the cross section of the first sealing ring 2531 , or, in the radial direction of the valve core seat assembly 25 , the first sealing ring 2531 is set closer to the valve than the protruding portion 255
  • the core 241 is arranged so that when the valve core 241 reciprocates linearly in the axial direction in the valve core cavity 256, the valve core 241 can abut against the first sealing ring 2531, so that the valve core 241 and the first sealing ring 2531 form a seal, That is, in this embodiment, the first sealing ring 2531 includes a valve port portion, the valve port portion forms the valve port 251, and the valve port 251 is formed by arranging the first sealing ring 2531. Compared with forming the valve port through a metal piece, the electric When the valve 100 is closed, a better seal is formed between the valve core 241 and the valve port, which is beneficial to improve internal leakage.
  • the valve component 2 further includes a second sealing assembly 28 and a second retaining ring 29 , the second sealing assembly 28 is located on the outer circumference of the valve core 241 , the second retaining ring 29 is located on the outer circumference of the valve core 241 , and the second Both the sealing assembly 28 and the second retaining ring 29 are located in the second accommodating cavity 225 of the connecting seat 22 , and the second retaining ring 29 is fixedly connected to the connecting seat 22 .
  • the second retaining ring 29 and the connecting seat 22 can be fitted by interference fit. Or welding or gluing, etc. to fix the connection.
  • a boss portion 226 is formed between the first accommodating portion 221 and the second accommodating portion 224 of the connecting seat 22 , along the axial direction of the valve member 2 , the second sealing assembly 28 is located between the boss portion 226 and the second retaining ring 29 .
  • the second retaining ring 29 is disposed closer to the second sealing assembly 28 than the valve core seat 252 , and the second sealing assembly 28 is axially limited by the boss portion 226 and the second retaining ring 29 .
  • the second sealing assembly 28 includes a second sealing ring 281 and a second sealing member 282.
  • the material of the second sealing ring 281 can be the same as the material of the first sealing ring 2531.
  • the second sealing ring 281 is located on the outer circumference of the valve core 241.
  • the sealing ring 281 is in an interference fit with the valve core 241, so that the second sealing ring 281 is in close contact with the outer surface of the valve core 24, and has a sealing effect on the valve core 24.
  • the second sealing ring 281 includes a second concave part, part of the second seal 282 is located in the second cavity formed by the second recess, along the radial direction of the second sealing assembly 28, the second sealing member 282 is pressed between the second recess and the inner side wall of the second accommodating portion 224, the second sealing member 282 is in hermetically compressed state.
  • the valve body part 3 includes a main valve body 31 , a first connecting pipe 32 and a second connecting pipe 34 , the main valve body 31 forms a valve body cavity 30 , part of the valve part 2 is located in the valve body cavity 30 , and the valve part 2 is connected to the main valve body 30 .
  • the valve body 31 is fixedly connected. Specifically, the valve part 2 and the valve body part 3 can be fixedly connected by means of interference fit, snap-fit, welding, or gluing. In this embodiment, the valve member 2 and the main valve body 31 are fixed by welding. Specifically, one end of the main valve body 31 is welded and fixed to the connecting seat 22 , and the other end of the main valve body 31 is welded and fixed to the fixing seat 254 .
  • the first connecting pipe 32 is welded and fixed to the main valve body 31, the first connecting pipe 32 forms a first flow channel 33, and the first flow channel 33 communicates with the valve body cavity 30; the second connecting pipe 34 is welded and fixed to the fixing seat 254, and the second connecting pipe 34 forms a second connecting pipe
  • the flow channel 35 and the second flow channel 35 communicate with the first orifice 2411 of the valve core 241 .
  • the second connecting tube 34 can also be welded and fixed to the main valve body 32 . With the axial linear movement of the valve core 241 , the first flow channel 32 and the second flow channel 33 can be switched on and off and throttled through the valve port 251 .
  • the driving component 1 when the driving component 1 is energized, the driving component 1 passes through the stator assembly 12 .
  • the excitation magnetic field is generated, the rotor assembly 21 is fixedly connected with the screw rod 23, the rotor assembly 21 drives the screw rod 23 to rotate together under the excitation of the magnetic field of the stator assembly 12, the screw rod 23 is threadedly connected with the valve core assembly 24, and the screw rod 23 passes through the bearing 272
  • the valve core assembly 24 is limited by the circumferential rotation of the connecting seat 22, and the connecting seat 22 and the valve body part 3 are fixedly arranged, so that under the action of the thread, the valve core 241 can linearly reciprocate along the axial direction of the valve part 2
  • the opening of the valve port 251 can be adjusted by approaching or moving away from the valve port 251 , thereby forming a throttling or on-off at the valve port 251 , so that the first flow channel 32 And the second flow channel 33 can realize on-off
  • the linear movement stroke of the valve core 241 is bounded by the flange portion 231 and the valve port portion of the screw rod 23 , that is, when the valve core 241 linearly moves upward along the axial direction of the valve member 2 , it is bounded by the limited The position portion 244 abuts against the flange portion 231 for position limitation, and when the valve core 241 linearly moves downward along the axial direction of the valve member 2 , the valve core 241 abuts against the valve port portion for position limitation.
  • the valve core seat 252 further includes a through hole portion 257, the number of the through hole portions 257 is at least two, the through hole portions 257 are distributed along the circumference of the outer peripheral wall of the valve core seat 252, and the through hole portion 257 penetrates through On the outer peripheral wall of the valve core seat 252, the cavity formed by the through hole portion 257 communicates with the valve core cavity 256.
  • the flow area of the cavity formed by the through hole portion 257 is larger than the flow area formed by the valve port 251, and the through hole portion 257 is roughly flat.
  • the through hole portion 257 includes a first section 2571, a second section 2572, a third section 2573 and a fourth section 2574.
  • the first section 2571 and the second section 2572 are distributed along the axial direction of the valve core seat 252, and along the In the axial direction of the valve core seat 252, the first section 2571 is disposed farther from the upper end surface of the valve core seat 252 than the second section 2572, and the third section 2573 and the fourth section 2574 are located on both sides of the first section 2571 and the second section 2572, respectively. , the third segment 2573 and the fourth segment 2574 are symmetrically distributed.
  • a plane is defined, which is parallel to the central axis of the valve core seat 252.
  • the maximum axial distance of the projection of the first segment 2571 and the second segment 2572 on this plane is L1, along the valve core seat 252.
  • the radial direction of the core seat 252, the minimum radial distance of the projection of the third segment 2573 and the fourth segment 2574 on the plane is L2, L1 ⁇ L2.
  • the first segment 2571 is a first flat arc segment
  • the second segment 2572 is a second flat arc segment
  • the third segment 2573 is a first circular arc segment
  • the fourth segment 2574 is a second circular segment
  • the surfaces of the first flat arc segment and the second flat arc segment are both flat arc surfaces
  • the surfaces of the first arc segment and the second arc segment are arc surfaces.
  • the first flat arc segment and the second flat arc segment are arranged in parallel, the first circular arc segment and the second circular arc segment are respectively located on both sides of the first flat arc segment and the second flat arc segment and are symmetrically distributed, and the first flat arc segment One end of the first arc segment is connected to one end of the first arc segment, the other end of the first arc segment is connected to one end of the second arc segment, the other end of the first arc segment is connected to one end of the second arc segment, and the second The other end of the flat arc segment is connected with the other end of the second circular arc segment.
  • Providing the through hole portion 257 in the shape of a flat hole is beneficial to reduce the axial height of the valve core seat 252 and further reduce the axial height of the electric valve 100 when the flow area is satisfied.
  • the through hole portion 257 is distributed along the circumference of the outer peripheral wall of the valve core seat 252, in order to ensure the connection strength of the through hole portion 257, along the axial direction of the valve core seat 252, the second section 2572 and the upper end surface of the valve core seat 252
  • the minimum axial distance of the projection on the plane is L3, the minimum axial distance of the projection of the first segment 2571 and the lower end face of the valve core seat 252 on the plane is L4, L4>L3, and L3 ⁇ 1.5mm; along the valve In the circumferential direction of the outer peripheral wall of the core seat 252, a spacer is formed between two adjacent through holes.
  • the minimum radial distance of the projection of the spacer on the plane is L5, L5 ⁇ 1.5 mm.
  • the second flow channel 35 is used as the working fluid outlet flow channel at this time, and the flow direction of the fluid at this time is defined as forward flow
  • the high-pressure working fluid flows into the valve body cavity 30 from the first flow passage 33, flows through the cavity formed by the through hole portion 257, and then flows into the valve core cavity 256, and can be throttled through the valve port 251 to become a low-pressure working fluid.
  • the flow channel 35 flows out to the subsequent system loop.
  • the second flow channel 35 when used as the inlet flow channel of the working fluid, the first flow channel 33 is used as the outlet flow channel of the working fluid at this time, and the flow direction of the fluid at this time is defined as reverse flow, and the high-pressure working fluid flows from the first flow channel.
  • the fluid When the second flow channel 35 flows in, the fluid will act on the free end of the valve core 241, which will generate an upward force on the valve core 241 in the axial direction, so that the valve core 241 and the valve port 251 are not tightly closed, or need to be closed. Only by increasing the output torque of the driving component 1 can the valve core 241 be driven to move.
  • the electric valve 100 also includes a balance channel.
  • the nut member 242 further includes a groove portion 2421 , and the groove portion 2421 is recessed inward from the outer side wall of the nut member 242 along the radial direction of the nut member 242 , along the axis of the nut member 242 .
  • One end of the groove portion 2421 extends to the free end surface of the limiting portion 244, and is flush with the free end surface of the limiting portion 244, and the other end of the groove portion 2421 extends to the first end surface 2451 of the threaded portion 245, which is in line with the first end surface 2451 of the threaded portion 245.
  • One end face 2451 is flush and the threaded portion 245 further includes a second end face 2452.
  • the second end face 2452 is set higher than the first end face 2451.
  • the second end face 2452 and the first end face 2451 are located along the threaded portion.
  • the circumference of the 242 is alternately distributed, and the number of the groove parts 2421 is at least one. Referring to FIGS.
  • a balance groove cavity 2423 is formed between the first installation parts 2412 of the valve core 241, and the balance groove cavity 2423 communicates with the first hole 2411 and the first accommodation cavity 222.
  • the first accommodating cavity 222 communicates with each other; the balance groove cavity 2423 communicates with the first channel 2411 through the gap formed between the first end surface 2451 and the second end surface 2452 .
  • the threaded portion 245 may not include the second end surface 2452 , and the second end surface 2452 is provided to play a certain guiding role for the fluid to flow through the balance groove cavity 2423 .
  • the balancing channel is realized by arranging a groove portion 2421 on the outer side wall of the nut member 242 and cooperating with the first mounting portion 2412 to form a balance groove cavity 2423, which is beneficial to ensure the strength of the nut member 242 under the action of high-pressure fluid. .
  • the high-pressure fluid flows from the second flow channel 35 , part of the high-pressure fluid can flow through the first orifice 2411 , and then flows into the first accommodating cavity 222 through the balance groove cavity 2423 , so that the high-pressure fluid flows into the first accommodating cavity 222
  • the working medium can be located on the back pressure side of the valve core assembly 24, and the high-pressure fluid located in the first accommodating cavity 222 is sealed by the second sealing component 28 to prevent the high-pressure fluid from communicating with the throttled low-pressure fluid located in the valve core cavity 256.
  • the high-pressure working medium in the first accommodating chamber 222 will act on the valve core assembly 24, and will generate an axial downward force on the valve core assembly 24, so that the valve core assembly 24 is subjected to two opposite directions in the axial direction.
  • a pressure action is beneficial to balance or tend to balance the force of the valve core assembly 24, which is beneficial to the stable operation of the valve core assembly 24.
  • Part of the high-pressure fluid can be throttled through the valve port 251 to become low-pressure fluid and flow into the valve core cavity 256 , and flow to the first flow channel 33 through the cavity formed by the through hole portion 257 , and then to the subsequent circuit. It should be pointed out that the setting of the balance groove cavity 2423 is beneficial to quickly achieve equilibrium of the pressure at both ends of the valve core assembly 24.
  • the nut member 242 may not include the groove portion 2421, such as the first hole 2411 and the first hole 2411.
  • the accommodating cavity 222 is only communicated with the threaded fitting clearance of the nut piece 242 and the screw rod 23, or under the condition of ensuring the strength of the nut piece 242, a through hole can also be provided inside the nut piece 242, so that the hole communicates with the first hole 2411 and the second hole.
  • An accommodating cavity 222 There may be various forms for forming the balance channel, as long as the first hole 2411 and the first accommodating cavity 222 can be communicated.
  • the valve member 2' includes a valve core 24' and a valve core seat 25', and the valve core 24' is made of non-metallic materials.
  • the valve core 24' is integrally injection-molded by a polyether ether ketone (PEEK) material.
  • PEEK polyether ether ketone
  • the valve core 24' can also be made of other plastic materials with both hardness and elasticity.
  • the valve core 24' includes a limiting portion 244', the limiting portion 244' is located in the first accommodating cavity 222 of the connecting seat 22, the limiting portion 244' cooperates with the matching portion of the connecting seat 22, and the circumferential direction of the valve core 24' is adjusted to each other.
  • the rotation is limited, and the structure of the limiting portion 244' can be the same as that of the limiting portion 244 in the first embodiment, and the limiting fit between the limiting portion 244' and the matching portion can be the same as the first embodiment. It is not repeated here.
  • the valve core 24' has a first hole 2411 and a threaded hole 243'.
  • the first hole 2411 is communicated with the threaded hole 243', and the peripheral wall forming the threaded hole 243' is provided with an inner Threaded segment, one end of the lead screw 23 is provided with an external thread segment, and one end of the lead screw 23 provided with the external thread segment extends into the threaded hole 243', and is threadedly matched with the internal thread segment of the valve core 24', so that the lead screw 23 and the Threaded connection of valve core 24'.
  • the valve core 24' is made of plastic material (such as PEEK material), which is beneficial to reduce the thread wear with the screw rod 23.
  • the valve core seat 25' is a metal part, the valve core seat 25' is integrally processed and formed, the valve core seat 25' is located on the outer circumference of the valve core 24', and the valve core seat 25' is fixedly connected with the connecting seat 22, which can be welded or welded.
  • the fixed connection can be realized by means of fit or glue.
  • the valve core seat 25' includes a valve port portion, and the valve port portion forms a valve port 251'.
  • valve core 24' is made of non-metallic material (such as PEEK material), so that when the electric valve 100' closes the valve, the valve core 24' and the valve port are A better seal can also be formed between them, which is beneficial to improving internal leakage, and is also beneficial to simplifying the structure of the valve core seat 25'.
  • non-metallic material such as PEEK material
  • the valve core 24' also has a balance through hole 246, the number of the balance through hole 246 is at least one, the balance through hole 246 communicates with the first hole 2411 and the first accommodating cavity 222, and the second pipe 34 and the valve core
  • the seat 25' is welded and fixed, the second nozzle 34 forms the second flow channel 35, and the second flow channel 35 communicates with the first orifice 2411, so that when the high-pressure fluid flows in from the second flow channel 35, part of the high-pressure fluid flows through the first channel 35.
  • the hole 2411 it flows into the first accommodating cavity 222 through the balance through hole 246, so that the force of the valve core 24' is balanced or tends to be balanced, which is beneficial to the stable operation of the valve core 24'.
  • the structure of other parts of the electric valve 100' is basically the same as that of the first embodiment, and will not be repeated here.
  • the valve component 2" includes a valve core assembly 24" and a valve core seat assembly 25", and the valve core assembly 24" includes a valve core 241".
  • the nut piece 242 with the valve core 241" as the injection insert, the nut piece 242" is integrally formed by injection molding, the nut piece 242" is integrally injection-molded by a plastic material, and the valve core 241" and the nut piece 242" are fixed by injection molding.
  • the nut piece 242" has a threaded hole 243", and the valve core 241" has a first hole 2411.
  • the threaded hole 243" communicates with the first hole 2411, and the peripheral side wall forming the threaded hole 243" is provided with a Internal thread segment, one end of the lead screw 23 is provided with an external thread segment, and one end of the lead screw 23 provided with the external thread segment extends into the threaded hole 243", and is threadedly matched with the internal thread segment of the nut piece 242" to realize the lead screw 23 Threaded connection to spool assembly 24".
  • the valve core seat assembly 25" includes a valve core seat 252" and a first sealing ring 253".
  • the valve core seat 252" is integrally processed and formed, and the valve core seat 252" is used as an injection molding insert to form the first sealing ring 253" by integral injection molding.
  • the first sealing ring 253" is injection-molded by a polyetheretherketone (PEEK) material.
  • PEEK polyetheretherketone
  • the first sealing ring 253" can also be made of other plastic materials with both hardness and elasticity.
  • the valve core seat assembly 25" is located on the outer circumference of the valve core 241", and the valve core assembly 25" is fixedly connected with the connecting seat 22. Specifically, the valve core assembly 25" is fixedly connected with the connecting seat 22 through the valve core seat 252".
  • the seat 252" and the connecting seat 22 can be fixedly connected by welding, interference fit, or glue.
  • the first sealing ring 253'' includes a valve port, which forms a valve port 251''.
  • the valve core 241'' linearly reciprocates along the axial direction of the valve member 2'', the valve core 241'' can be close to or away from the valve port 251. ”, and then a throttling or on-off is formed at the valve port 251”.
  • the balance channel is provided on the screw rod 23, and the balance channel includes a first channel segment 232 and a second channel segment 233.
  • the first channel segment 232 is arranged along the axial direction of the screw 23, the second channel section 233 is arranged along the radial direction of the screw 23, the first channel section 232 is communicated with the second channel section 233, the number of the second channel section 233 is at least one, and the balance channel
  • the first channel 2411 is communicated with the first accommodating cavity 222 of the connecting seat 22.
  • the first channel section 232 is communicated with the first channel 2411 and the second channel section 232
  • the second channel section 232 is communicated with the first accommodating cavity 222.
  • the second pipe 34 is welded and fixed to the valve core seat 252", the second pipe 34 forms the second flow channel 35, and the second flow channel 35 communicates with the first orifice 2411, so that when the high-pressure fluid flows from the second flow channel 35, part of the high pressure After the fluid flows through the first channel 2411, it flows into the first accommodating cavity 222 through the first channel section 232 and the second channel section 233, so that the force of the valve core assembly 24" is balanced or tends to be balanced, which is beneficial to the valve core assembly 24". operation is stable.
  • the valve core can be used as an injection-molded insert, a nut piece can be formed by injection molding, and a screw rod can be used to form a nut piece. form a balance channel; or in the first embodiment, the valve core seat and the fixed seat are integrally processed and formed, and the integrally formed valve core seat is used as an injection-molded insert to form a first sealing ring with a valve port by injection molding, which is beneficial to Simple structure and assembly.
  • Other parts of the structure of the electric valve 100" are basically the same as those of the first embodiment, and will not be repeated here.

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Abstract

一种电动阀，包括丝杆（23）和阀芯组件（24），丝杆（23）具有外螺纹段，阀芯组件（24）具有内螺纹段，阀芯组件（24）与丝杆（23）通过内螺纹段和外螺纹段配合进行螺纹连接，至少内螺纹段对应的阀芯组件（24）部分的材质包括塑性材料，通过设置阀芯组件（24）内螺纹段对应部分的材质包括塑性材料，相比于丝杆和阀芯两金属件直接螺纹连接，有利于减小螺纹磨损，提高电动阀的使用寿命。

Description

电动阀
本申请要求于2020年12月30日提交中国专利局、申请号为202011627567.3、发明名称为“电动阀”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及一种电动零部件，具体涉及一种电动阀。
背景技术
在空调系统或热管理系统中，常采用电动阀作为节流元件，电动阀可以根据系统不同工作模式的需要，对工作流体进行正向或反向节流。电动阀包括丝杆和阀芯，发明人已知有丝杆和阀芯两金属件螺纹连接的结构，丝杆在螺纹作用下能够带动阀芯进行线性往复运动，但长此以往，容易造成丝杆和阀芯的螺纹磨损，降低电动阀的使用寿命。
发明内容
本申请的目的在于提供一种电动阀，有利于减小螺纹磨损，提高电动阀的使用寿命。
为实现上述目的，本申请采用如下技术方案：
一种电动阀，包括阀部件，所述阀部件包括丝杆和阀芯组件，所述丝杆与所述阀芯组件螺纹连接，所述阀部件具有阀口，所述丝杆能够带动所述阀芯组件靠近或远离所述阀口来调节所述阀口的开度，其特征在于：所述阀芯组件包括内螺纹段，所述丝杆具有外螺纹段，所述阀芯组件与所述丝杆通过内螺纹段和外螺纹段配合进行螺纹连接，至少所述内螺纹段对应的所述阀芯组件部分的材质包括塑性材料。
本申请提供了一种电动阀，包括丝杆和阀芯组件，丝杆具有外螺纹段，阀芯组件具有内螺纹段，阀芯组件与丝杆通过内螺纹段和外螺纹段配合进行螺纹连接，至少内螺纹段对应的阀芯组件部分的材质包括塑性材料，通过设置阀芯组件内螺纹段对应部分的材质包括塑性材料，相比与丝杆和阀芯两金属件直接螺纹连接，有利于减小螺纹磨损，提高电动阀的使用寿命。
附图说明
图1是电动阀的第一种实施方式的一个截面结构示意图；
图2是图1中阀部件的一个截面结构示意图；
图3是电动阀第一种实施方式中阀芯组件的一个爆炸结构示意图；
图4是图1中阀芯组件的一个截面结构示意图；
图5是图4中阀芯的一个截面结构示意图；
图6是电动阀第一种实施方式中连接座的一个立体结构示意图；
图7是图6中连接座的一个截面结构示意图；
图8是图1中阀芯座组件的一个截面结构示意图；
图9是电动阀第一种实施方式中阀芯座组件的一个立体结构示意图；
图10是电动阀的第一种实施方式的另一个截面结构示意图；
图11是图10中A部的局部放大结构示意图；
图12是电动阀的第二种实施方式的一个截面结构示意图；
图13是电动阀的第三种实施方式的一个截面结构示意图。
具体实施方式
下面结合附图和具体实施例对本申请作进一步说明：
参见图1，电动阀100包括驱动部件1、阀部件2以及阀体部件3，部分阀部件2位于阀体部件3形成的阀体腔30内，阀部件2与阀体部件3连接，驱动部件1位于阀部件2的外周，驱动部件1与阀部件2连接，电动阀100通过驱动部件1与外界进行电连接和/或信号连接。
参见图1，驱动部件1包括外壳体11，定子组件12以及接口部13，定子组件12包括线圈绕组121，接口部13包括第一插针131，本实施例中，以线圈绕组121、第一插针131为注塑嵌件，一体注塑形成外壳体11。接口部13与外壳体11一体注塑成型，第一插针131的一端与线圈绕组121电连接，第一插针131的另一端位于接口部13形成的接插腔内，用于与外界电连接。当然作为其他实施方式，接口部13与外壳体11还可以通过装配固定的方式实现连接。在本实施例中，驱动部件1还包括卡扣部14，卡扣部14与外壳体11固定连接，驱动部件1通过卡扣部14实现与阀部件2的连接。
参见图2，阀部件2包括转子组件21、连接座22、丝杆23、阀芯组件 24、阀芯座组件25以及套管26，转子组件21与丝杆23的一端固定连接，丝杆23的另一端与阀芯组件24螺纹连接，连接座22位于部分丝杆23和部分阀芯组件24的外周，阀芯座组件25位于部分阀芯组件24的外周，连接座22与阀芯座组件25固定连接，套管26位于转子组件21的外周，套管26与连接座22固定连接。阀芯座组件25包括阀口部，阀口部形成阀口251，阀芯组件24包括阀芯241，转子组件21能够通过丝杆23带动阀芯241沿阀部件2的轴向进行线性往复运动，阀芯241在运动时能够靠近或远离阀口251，进而能够在阀口251处形成节流或通断。
参见图2至图5，转子组件21包括转子211和连接件212，转子211与连接件212固定连接，连接件212与丝杆23的一端固定连接。在本实施例中，以连接件212为注塑嵌件，通过注塑形成转子211，转子211与连接件212注塑固定。连接件212与丝杆23可以通过过盈配合或焊接或粘胶等方式实现固定。阀芯组件24还包括螺母件242，螺母件242由塑性材料制成，螺母件242可以通过一体注塑成型，阀芯241位于部分螺母件242的外周，阀芯241与螺母件242固定连接，具体地螺母件242与阀芯241可以通过过盈配合或粘胶或注塑或铆压等方式实现固定。在本实施例中，阀芯241具有第一孔道2411，阀芯241包括第一安装部2412，第一安装部2412形成第一安装腔2413，就阀芯241而言，第一安装腔2413与第一孔道2411连通。螺母件242包括限位部244和螺纹部245，限位部244和螺纹部245一体注塑成型，螺母件242的外形大致呈T形，螺纹部245位于第一安装腔2413，螺纹部245与第一安装部2412过盈配合实现螺母件242和阀芯241的固定连接；进一步地，为加固阀芯241与螺母件242的固定连接，阀芯241还包括第一铆压部2414，沿阀芯241的轴向，第一铆压部2414高出第一安装部2412设置，沿阀芯241的径向，第一铆压部2414位于第一安装部2412的两侧且可以对称分布，第一铆压部2414与第一安装部2412之间形成有第一台阶部2415，第一铆压部2414上设置有用于铆压的铆压凸部2416，铆压凸部2416间隔设置，相邻两铆压凸部2416之间形成有铆压槽2417，设置铆压槽2417的目的在于实现后文中平衡通道的连通。螺纹部245位于第一安装腔2413，螺纹部245与第一安装部2412过盈配合，限位部244与第一台阶部2415抵接，铆压凸部2416折弯压紧于 限位部244，使限位部244压紧于铆压凸部2416和第一台阶部2415之间，实现螺母件242与阀芯241的固定连接。螺母件242还具有螺纹孔243，螺纹孔243贯穿螺母件242设置，形成螺纹孔243的周侧壁上设置有内螺纹段，相对应地，丝杆23的另一端上设置有与内螺纹段配合的外螺纹段，丝杆23伸入螺纹孔243中，使丝杆23的外螺纹段与螺母件242的内螺纹段螺纹配合，从而实现丝杆23与阀芯组件24的螺纹连接。设置丝杆23与螺母件242螺纹连接，螺母件242为塑性材料，相比与丝杆23与阀芯241两者金属件之间直接螺纹连接，有利于减小螺纹磨损。
参见图2、图3、图6以及图7，连接座22包括第一容纳部221，第一容纳部221形成第一容纳腔222，部分丝杆23和部分阀芯组件24位于第一容纳腔222，第一容纳部221包括配合部223，限位部244位于第一容纳腔222，限位部244为非旋转体，限位部244与配合部223能够相互配合，对阀芯组件24的周向转动进行限位，限位部244和配合部223的结构可以有多种，只要能够限制阀芯组件24的周向转动即可。在本实施例中，限位部244包括限位部侧面2441，相应地，配合部223包括配合部侧面2231，限位部244位于第一容纳腔222，使限位部侧面2441与配合部侧面2231贴合设置，限制阀芯组件24的周向转动。需要指出的是，为使阀芯组件24能够沿阀部件2的轴线进行线性往复运动，还需设置配合部223的轴向高度H大于限位部244的轴向高度h，具体地，配合部223的轴向高度H和限位部244的轴向高度h之间的比例关系可以根据阀芯组件24的具体运动行程来设计确定。例如，在本实施例中，配合部223的轴向高度H为限位部244的轴向高度h的4.2倍。
参见图2，阀部件2还包括支撑构件27，具体地，支撑构件27包括支撑架271，轴承272以及套筒273，支撑架271具有放置腔274，支撑架271与连接座22固定连接，放置腔274与第一容纳腔222连通。在本实施例中，支撑架271与连接座22通过焊接固定，当然支撑架271与连接座22还可以通过过盈配合或粘胶等其他方式实现固定。另外，支撑架271与连接座22还可以通过一体加工成型。部分丝杆23位于放置腔274，轴承272位于丝杆23的外周，轴承272位于放置腔274，轴承272与支撑架271固定连接，具体地，支撑架271包括第二台阶部275和第二铆压部276，轴承272 与第二台阶部275抵接，第二铆压部276折弯压于轴承272上，使轴承272压紧于第二铆压部276和第二台阶部275之间，从而实现轴承272与支撑架271的固定。进一步地，为防止第二铆压部276在铆压时造成对轴承272的损伤，支撑构件27还可以包括第一挡圈277，第一挡圈277位于丝杆23的外周，第一挡圈277位于放置腔274，沿支撑构件27的轴向，轴承272位于第一挡圈277和第二台阶部275之间，第一挡圈277比第二台阶部275靠近第二铆压部276设置，铆压时，第二铆压部276折弯压紧于第一挡圈277，使轴承272压紧于第二台阶部275和第一挡圈277之间，实现轴承272的固定。套筒273位于丝杆23的外周，至少部分套筒273位于放置腔274，套筒273与丝杆23固定连接，具体地，套筒273与丝杆23可以通过过盈配合或焊接或粘胶等方式实现固定。丝杆23包括凸缘部231，凸缘部231沿丝杆23的径向向外凸起，沿丝杆23的轴向，轴承272位于套筒273和凸缘部231之间，凸缘部231比套筒273更靠近连接座22设置，丝杆23通过凸缘部231和套筒273进行轴向限位，具体地，当丝杆23假定沿轴向以远离连接座22的方向运动时，丝杆23通过凸缘部231与轴承272抵接，对丝杆23的运动进行限位；当丝杆23假定沿轴向以靠近连接座22的方向运动时，丝杆23通过套筒273与轴承272抵接，对丝杆23的运动进行限位。
参见图2、图7以及图8，连接座22还包括第二容纳部224，第二容纳部224形成第二容纳腔225，就连接座22单个零部件而言，第二容纳腔225与第一容纳腔222连通。部分阀芯座组件25位于第二容纳腔225，阀芯座组件25与连接座22可以通过过盈配合或焊接或粘胶等方式实现固定连接。阀芯座组件25包括阀芯座252、第一密封组件253以及固定座254，第一密封组件253包括第一密封环2531和第一密封件2532，第一密封环2531可以通过聚醚醚酮(PEEK)材料一体注塑成型，当然第一密封环2531还可以通过其他兼具硬度和弹性的塑性材料制成。阀芯座252具有阀芯腔256，部分固定座254位于阀芯腔256，固定座254与阀芯座252固定连接，具体地可以通过过盈配合或焊接或粘胶等方式实现固定连接。参见图2，部分阀芯座252位于连接座22的第二容纳腔225，阀芯座252与连接座22固定连接，沿阀部件2的轴向，阀芯座252位于连接座22和固定座254 之间。固定座254与阀芯座252固定装配形成容纳槽，部分第一密封组件253位于容纳槽，具体地，第一密封件2532和部分第一密封环2531位于容纳槽，第一密封环2531包括第一凹部，部分第一密封件2532位于第一凹部形成的第一凹腔，沿第一密封组件253的径向，第一密封件2532被压紧于第一凹部和阀芯座252的内侧壁面之间，第一密封件2532处于密封状态。当然作为其他实施方式，第一密封环2531还可以不包括第一凹部，即第一密封件2532直接压紧于第一密封环2531的外侧壁和阀芯座252的内侧壁面之间。需要指出的是，第一密封件2531的密封方式并不局限于上述方式，只要能够形成密封防止阀芯座252与固定座254之间的内漏就行。参见图8，阀芯座252还包括突起部255，突起部255沿阀芯座252的径向向内凸起，沿阀芯座组件25的轴向，第一密封组件253位于突起部255和固定座254的端面之间，第一密封组件253通过突起部255和固定座254的端面进行轴向限位。需要指出的是，定义轴向限位包括第一密封组件253夹紧固定于突起部255和固定座254之间的情况。
参见图2和图8，部分阀芯241位于阀芯腔256，第一密封组件253位于阀芯241的外周，具体地，第一密封环2531位于阀芯241的外周。设置突起部255的径向宽度d小于第一密封环2531的横截面的径向宽度D，或者说，沿阀芯座组件25的径向，设置第一密封环2531比突起部255更靠近阀芯241设置，这样，当阀芯241在阀芯腔256内沿轴向线性往复运动时，阀芯241能够与第一密封环2531抵接，使阀芯241与第一密封环2531形成密封，即在本实施例中，第一密封环2531包括阀口部，阀口部形成阀口251，通过设置第一密封环2531形成阀口251，相比与通过金属件形成阀口，可以使电动阀100在关阀时，阀芯241与阀口部之间形成更好的密封，有利于改善内漏。
参见图2和图7，阀部件2还包括第二密封组件28和第二挡圈29，第二密封组件28位于阀芯241的外周，第二挡圈29位于阀芯241的外周，第二密封组件28和第二挡圈29均位于连接座22的第二容纳腔225，第二挡圈29与连接座22固定连接，具体地，第二挡圈29与连接座22可以通过过盈配合或焊接或粘胶等方式固定连接。连接座22在第一容纳部221和第二容纳部224之间形成有凸台部226，沿阀部件2的轴向，第二密封 组件28位于凸台部226和第二挡圈29之间，第二挡圈29比阀芯座252更靠近第二密封组件28设置，第二密封组件28通过凸台部226和第二挡圈29进行轴向限位。第二密封组件28包括第二密封环281和第二密封件282，第二密封环281的材料可以和第一密封环2531的材料相同，第二密封环281位于阀芯241的外周，第二密封环281与阀芯241过盈配合，使第二密封环281与阀芯24的外表面紧密接触，对阀芯24起密封作用，第二密封环281包括第二凹部，部分第二密封件282位于第二凹部形成的第二凹腔，沿第二密封组件28的径向，第二密封件282被压紧于第二凹部和第二容纳部224的内侧壁之间，第二密封件282处于密封压紧状态。
参见图1和图2，阀体部件3包括主阀体31、第一接管32以及第二接管34，主阀体31形成阀体腔30，部分阀部件2位于阀体腔30，阀部件2与主阀体31固定连接，具体地，阀部件2与阀体部件3可以通过过盈配合或卡扣或焊接或粘胶等方式实现固定连接。在本实施例中，阀部件2与主阀体31通过焊接固定，具体地，主阀体31的一端与连接座22焊接固定，主阀体31的另一端与固定座254焊接固定。第一接管32与主阀体31焊接固定，第一接管32形成第一流道33，第一流道33与阀体腔30连通；第二接管34与固定座254焊接固定，第二接管34形成第二流道35，第二流道35与阀芯241的第一孔道2411连通，当然作为其他实施方式，第二接管34同样可以与主阀体32焊接固定。随着阀芯241的轴向线性运动，第一流道32和第二流道33能够通过阀口251实现通断和节流，具体地，当驱动部件1通电后，驱动部件1通过定子组件12产生激励磁场，转子组件21与丝杆23固定连接，转子组件21在定子组件12的磁场激励下，带动丝杆23一起转动，丝杆23与阀芯组件24螺纹连接，丝杆23通过轴承272轴向限位，阀芯组件24通过连接座22周向转动限位，连接座22与阀体部件3固定设置，这样在螺纹作用下，阀芯241能够沿阀部件2的轴向进行线性往复运动，阀芯241在沿轴向进行线性往复运动时，能够通过靠近或远离阀口251来调节阀口251的开度，进而在阀口251处形成节流或通断，这样第一流道32和第二流道33能够通过阀口251实现通断和节流。另外，在本实施例中，阀芯241的线性运动行程通过丝杆23的凸缘部231和阀口部限定边界，即当阀芯241沿阀部件2的轴向向上线性运动时，通过限位 部244与凸缘部231抵接限位，当阀芯241沿阀部件2的轴向向下线性运动时，通过阀芯241与阀口部抵接限位。
参见图8和图9，阀芯座252还包括通孔部257，通孔部257的数量至少为两个，通孔部257沿阀芯座252的外周壁等圆周分布，通孔部257贯穿阀芯座252的外周壁，通孔部257形成的孔腔与阀芯腔256连通，通孔部257形成的孔腔的流通面积大于阀口251形成的流通面积，通孔部257大致呈扁孔状设置，通孔部257包括第一段2571、第二段2572、第三段2573以及第四段2574，第一段2571和第二段2572沿阀芯座252的轴向分布，且沿阀芯座252的轴向，第一段2571比第二段2572远离阀芯座252的上端面设置，第三段2573和第四段2574分别位于第一段2571和第二段2572的两侧，第三段2573和第四段2574对称分布。定义一平面，该平面与阀芯座252的中轴线平行，沿阀芯座252的轴向，第一段2571和第二段2572在该平面上的投影的最大轴向距离为L1，沿阀芯座252的径向，第三段2573和第四段2574在该平面上的投影的最小径向距离为L2，L1＜L2。
在本实施例中，具体地，第一段2571为第一平弧段，第二段2572为第二平弧段，第三段2573为第一圆弧段，第四段2574为第二圆弧段，第一平弧段和第二平弧段的表面均为平弧面，第一圆弧段和第二圆弧段的表面均为圆弧面，沿阀芯座252的轴向，第一平弧段和第二平弧段平行设置，第一圆弧段和第二圆弧段分别位于第一平弧段和第二平弧段的两侧且对称分布，第一平弧段的一端与第一圆弧段的一端相连，第一平弧段的另一端与第二圆弧段的一端相连，第一圆弧段的另一端与第二平弧段的一端相连，第二平弧段的另一端与第二圆弧段的另一端相连。设置通孔部257为扁孔状，在满足流通面积的情况下，有利于减小阀芯座252的轴向高度，进而有利于减小电动阀100的轴向高度。
另外，由于通孔部257沿阀芯座252的外周壁等圆周分布，为保证通孔部257的连接强度，沿阀芯座252的轴向，第二段2572和阀芯座252的上端面在平面上的投影的最小轴向距离为L3，第一段2571和阀芯座252的下端面在平面上的投影的最小轴向距离为L4，L4＞L3，且L3≥1.5mm；沿阀芯座252的外周壁的圆周方向，相邻两通孔部之间形成有间隔部，沿 阀芯座252的径向，间隔部在平面上的投影的最小径向距离为L5，L5≥1.5mm。
参见图1，电动阀100在工作过程中，当第一流道33作为工作流体进口流道时，此时第二流道35作为工作流体出口流道，定义此时流体的流向为正向流动，高压的工作流体从第一流道33流入阀体腔30，流经通孔部257形成的孔腔后流入阀芯腔256，并能够通过阀口251节流后变为低压的工作流体，从第二流道35流出，流向后续系统回路。需要指出的是，通过设置通孔部257沿阀芯座252的外周壁等圆周分布，有利于平衡高压的工作流体从第一流道33流入时对阀芯241的径向冲击，有利于阀芯241的运行稳定。
参见图1，当第二流道35作为工作流体的进口流道时，此时第一流道33作为工作流体的出口流道，定义此时流体的流向为反向流动，高压的工作流体从第二流道35流入时，流体将会作用于阀芯241的自由端部，会对阀芯241产生一个沿轴向向上的作用力，导致阀芯241与阀口251关阀不紧，或者需增大驱动部件1的输出力矩才能带动阀芯241运动，为消除或减缓高压的工作流体对阀芯241的压力作用，使阀芯组件24运行稳定，电动阀100还包括平衡通道，具体地，参见图3，在本实施例中，螺母件242还包括凹槽部2421，沿螺母件242的径向，凹槽部2421自螺母件242的外侧壁面向内凹陷形成，沿螺母件242的轴向，凹槽部2421的一端延伸至限位部244的自由端面，与限位部244的自由端面平齐设置，凹槽部2421的另一端延伸至螺纹部245的第一端面2451，与第一端面2451平齐设置，螺纹部245还包括第二端面2452，沿螺母件242的轴向，第二端面2452高出于第一端面2451设置，第二端面2452和第一端面2451沿螺纹部242的圆周交替分布，凹槽部2421的数量至少为一个，在本实施例中，凹槽部2421的数量为两个，且对称设置于螺母件242的外侧壁。参见图3、图5、图10以及图11，当螺母件242与阀芯241装配固定时，至少部分螺纹部245位于阀芯241的第一安装腔2413，螺母件242的凹槽部2421与阀芯241的第一安装部2412之间装配形成平衡槽腔2423，平衡槽腔2423连通第一孔道2411和第一容纳腔222，具体地，平衡槽腔2423通过铆压槽2417形成的空隙与第一容纳腔222连通；平衡槽腔2423通过第一端面2451和 第二端面2452之间形成的空隙连通第一孔道2411。需要指出的是，作为其他实施方式，螺纹部245还可以不包括第二端面2452，设置第二端面2452用于对流体流过平衡槽腔2423起一定导向作用。另外，通过在螺母件242的外侧壁上设置凹槽部2421，并与第一安装部2412配合形成平衡槽腔2423的方式来实现平衡通道，有利于保证螺母件242在高压流体作用下的强度。
参见图1、图10以及图11，当高压的流体从第二流道35流入时，部分高压流体能够流经第一孔道2411后，通过平衡槽腔2423流入第一容纳腔222，使高压的工作介质能够位于阀芯组件24的背压侧，位于第一容纳腔222的高压流体通过第二密封组件28密封，避免高压流体与位于阀芯腔256的经节流后的低压流体连通，位于第一容纳腔222的高压工作介质将作用于阀芯组件24，会对阀芯组件24产生一个沿轴向向下的作用力，这样阀芯组件24在沿轴向方向上受到方向相反的两个压力作用，有利于使阀芯组件24受力平衡或趋于平衡，有利于阀芯组件24的运行稳定。部分高压流体能通过阀口251节流后变为低压流体流入阀芯腔256，并通过通孔部257形成的孔腔流向第一流道33，并流向后续回路。需要指出的是，设置平衡槽腔2423有利于使阀芯组件24两端压力快速达到平衡，当然作为其他实施方式，螺母件242还可以不包括凹槽部2421，如第一孔道2411和第一容纳腔222仅通过螺母件242与丝杆23的螺纹配合间隙连通，或者在保证螺母件242强度的情况下，也可以在螺母件242内部设置贯通的穿孔，使穿孔连通第一孔道2411和第一容纳腔222。形成平衡通道的形式可以有多种，只要能够连通第一孔道2411和第一容纳腔222即可。
参见图12，为电动阀的第二种实施方式，在第二种实施方式中，阀部件2’包括阀芯24’和阀芯座25’，阀芯24’由非金属材料制成，在本实施例中，阀芯24’由聚醚醚酮(PEEK)材料一体注塑成型，当然阀芯24’还可以通过其他兼具硬度和弹性的塑性材料制成。阀芯24’包括限位部244’，限位部244’位于连接座22的第一容纳腔222，限位部244’与连接座22的配合部相互配合，对阀芯24’的周向转动进行限位，限位部244’的结构可以和第一种实施中限位部244的结构相同，且限位部244’与配合部的限位配合方式可以和第一种实施方式相同，在此不再赘述。阀芯24’具有第一孔道2411和螺纹孔243’，就阀芯24’单个零部件而言，第一孔道2411和 螺纹孔243’连通，形成螺纹孔243’的周侧壁上设置有内螺纹段，丝杆23的一端上设置有外螺纹段，丝杆23设置有外螺纹段的一端伸入螺纹孔243’中，与阀芯24’的内螺纹段螺纹配合，实现丝杆23与阀芯24’的螺纹连接。设置阀芯24’由塑性材料(如PEEK材料)制成，有利于减小与丝杆23间的螺纹磨损。阀芯座25’为金属件，阀芯座25’一体加工成型，阀芯座25’位于阀芯24’的外周，阀芯座25’与连接座22固定连接，具体地可以通过焊接或过盈配合或粘胶等方式实现固定连接。阀芯座25’包括阀口部，阀口部形成阀口251’，阀芯24’在沿阀部件2’的轴向进行线性往复运动时，阀芯24’能够靠近或远离阀口251’，进而在阀口251’处形成节流或通断，设置阀芯24’由非金属材料(如PEEK材料)制成，这样在电动阀100’关阀时，阀芯24’与阀口部之间同样能形成更好的密封，有利于改善内漏，另外还有利于简化阀芯座25’的结构。在本实施例中，阀芯24’还具有平衡通孔246，平衡通孔246的数量至少为一个，平衡通孔246连通第一孔道2411和第一容纳腔222，第二接管34与阀芯座25’焊接固定，第二接管34形成第二流道35，第二流道35与第一孔道2411连通，这样当高压的流体从第二流道35流入时，部分高压流体流经第一孔道2411后，通过平衡通孔246流入第一容纳腔222，使阀芯24’的受力平衡或趋于平衡，有利于阀芯24’的运行稳定。电动阀100’的其他部分结构同第一种实施方式基本相同，在此不再赘述。
参见图13，为电动阀的第三种实施方式，在第三种实施方式中，阀部件2”包括阀芯组件24”和阀芯座组件25”，阀芯组件24”包括阀芯241”和螺母件242”，以阀芯241”为注塑嵌件，一体注塑形成螺母件242”，螺母件242”由塑性材料一体注塑成型，阀芯241”和螺母件242”通过注塑固定。螺母件242”具有螺纹孔243”，阀芯241”具有第一孔道2411，就阀芯组件24”而言，螺纹孔243”与第一孔道2411连通，形成螺纹孔243”的周侧壁上设置有内螺纹段，丝杆23的一端上设置有外螺纹段，丝杆23设置有外螺纹段的一端伸入螺纹孔243”中，与螺母件242”的内螺纹段螺纹配合，实现丝杆23与阀芯组件24”的螺纹连接。阀芯座组件25”包括阀芯座252”和第一密封环253”，阀芯座252”一体加工成型，以阀芯座252”为注塑嵌件，一体注塑形成第一密封环253”。在本实施例中，第一密封环253”由 聚醚醚酮(PEEK)材料注塑成型，当然第一密封环253”还可以通过其他兼具硬度和弹性的塑性材料制成。阀芯座组件25”位于阀芯241”的外周，阀芯组件25”与连接座22固定连接，具体地，阀芯组件25”通过阀芯座252”实现与连接座22固定连接，阀芯座252”与连接座22可以通过焊接或过盈配合或粘胶等方式实现固定连接。第一密封环253”包括阀口部，阀口部形成阀口251”，阀芯241”在沿阀部件2”的轴向进行线性往复运动时，阀芯241”能够靠近或远离阀口251”，进而在阀口251”处形成节流或通断。在本实施例中，平衡通道设置于丝杆23上，平衡通道包括第一通道段232和第二通道段233，第一通道段232沿丝杆23的轴向设置，第二通道段233沿丝杆23的径向设置，第一通道段232与第二通道段233连通，第二通道段233的数量至少为一个，平衡通道连通第一孔道2411和连接座22的第一容纳腔222，具体地，第一通道段232连通第一孔道2411和第二通道段232，第二通道段232与第一容纳腔222连通。第二接管34与阀芯座252”焊接固定，第二接管34形成第二流道35，第二流道35与第一孔道2411连通，这样高压的流体从第二流道35流入时，部分高压流体流经第一孔道2411后，通过第一通道段232和第二通道段233流入第一容纳腔222，使阀芯组件24”的受力平衡或趋于平衡，有利于阀芯组件24”的运行稳定。需要指出的是：结合第一种实施方式和第三种实施方式，能够推导出的是在第一种实施方式中，可以以阀芯为注塑嵌件，通过注塑形成螺母件，并通过丝杆形成平衡通道；或者在第一种实施方式中，阀芯座与固定座一体加工成型，且以一体成型的阀芯座为注塑嵌件，注塑形成具有阀口的第一密封环，这样有利于结构和装配简单。电动阀100”的其他部分结构同第一种实施方式基本相同，在此不再赘述。
需要说明的是：以上实施例仅用于说明本申请而并非限制本申请所描述的技术方案，例如对“前”、“后”、“左”、“右”、“上”、“下”等方向性的界定，尽管本说明书参照上述的实施例对本申请已进行了详细的说明，但是，本领域的普通技术人员应当理解，所属技术领域的技术人员仍然可以对本申请进行修改或者等同替换，而一切不脱离本申请的精神和范围的技术方案及其改进，均应涵盖在本申请的权利要求范围内。

Claims (15)

  1. 一种电动阀，包括阀部件，所述阀部件包括丝杆和阀芯组件，所述丝杆与所述阀芯组件螺纹连接，所述阀部件具有阀口，所述丝杆能够带动所述阀芯组件靠近或远离所述阀口来调节所述阀口的开度，其特征在于：所述阀芯组件包括内螺纹段，所述丝杆具有外螺纹段，所述阀芯组件与所述丝杆通过内螺纹段和外螺纹段配合进行螺纹连接，至少所述内螺纹段对应的所述阀芯组件部分的材质包括塑性材料。
  2. 根据权利要求1所述的电动阀，其特征在于：所述阀芯组件包括螺母件和阀芯，所述阀芯位于部分所述螺母件的外周，所述阀芯与所述螺母件固定连接，所述螺母件的材质包括塑性材料；
    所述螺母件具有螺纹孔，形成所述螺纹孔的周侧壁上设置有所述内螺纹段，所述丝杆的一端设置有所述外螺纹段，所述丝杆设置有所述外螺纹段的一端伸入所述螺纹孔，所述外螺纹段与所述内螺纹段螺纹配合。
  3. 根据权利要求1所述的电动阀，其特征在于：所述阀芯组件由塑性材料一体注塑形成，所述阀芯组件具有螺纹孔，形成所述螺纹孔的周侧壁上设置有所述内螺纹段，所述丝杆的一端设置有所述外螺纹段，所述丝杆设置有所述外螺纹段的一端伸入所述螺纹孔，所述外螺纹段与所述内螺纹段螺纹配合。
  4. 根据权利要求1-3任一项所述的电动阀，其特征在于：所述阀部件包括阀芯座组件，所述阀芯座组件包括阀口部，所述阀口部形成所述阀口，所述阀芯组件能够与所述阀口部抵接，所述阀口部的材质包括塑性材料，或者至少所述阀芯组件对应与所述阀口部抵接的部分的材质包括塑性材料。
  5. 根据权利要求4所述的电动阀，其特征在于：所述阀芯座组件包括阀芯座、固定座、第一密封组件，所述阀芯座与所述固定座装配形成容纳槽，部分所述第一密封组件位于所述容纳槽，所述第一密封组件与所述容纳槽密封设置，所述第一密封组件包括第一密封环，所述第一密封环由塑性材料形成，所述第一密封环形成所述阀口部。
  6. 根据权利要求4所述的电动阀，其特征在于：所述阀芯座组件包括阀芯座、固定座、第一密封环，所述阀芯座与所述固定座一体加工成型， 所述第一密封环分别与所述阀芯座和所述固定座注塑固定，所述第一密封环由塑性材料形成，所述第一密封环形成所述阀口部。
  7. 根据权利要求2所述的电动阀，其特征在于：所述阀部件包括连接座和第二密封组件，所述连接座具有第一容纳腔和第二容纳腔，所述阀芯组件的一部分位于所述第一容纳腔，所述阀芯组件的又一部分位于所述第二容纳腔，所述第二密封组件位于所述阀芯组件的部分的外周，所述第二密封组件位于所述第二容纳腔，所述第二密封组件密封分隔所述第一容纳腔和所述第二容纳腔；
    所述阀部件具有平衡通道，所述阀芯组件具有第一孔道，所述平衡通道连通所述第一孔道和所述第一容纳腔。
  8. 根据权利要求7所述的电动阀，其特征在于：所述螺母件具有贯穿所述螺母件的穿孔，所述穿孔形成所述平衡通道的至少部分，所述穿孔连通所述第一孔道和所述第一容纳腔。
  9. 根据权利要求7所述的电动阀，其特征在于：所述螺母件包括凹槽部，沿所述螺母件的径向，所述凹槽部自所述螺母件的外侧壁向内凹陷形成，所述凹槽部与所述阀芯装配形成平衡槽腔，所述平衡槽腔形成所述平衡通道的至少部分，所述平衡槽腔连通所述第一孔道和所述第一容纳腔。
  10. 根据权利要求7所述的电动阀，其特征在于：所述丝杆具有第一通道段和第二通道段，所述第一通道段沿所述丝杆的轴向设置，所述第二通道段沿所述丝杆的径向设置，所述第二通道段的数量至少为一个，所述第一通道段与所述第二通道段形成为所述平衡通道的至少部分，所述第一通道段连通所述第一孔道和所述第二通道段，所述第二通道段与所述第一容纳腔连通。
  11. 根据权利要求5或6所述的电动阀，其特征在于：所述阀芯座包括通孔部，沿所述阀芯座的径向，所述通孔部贯穿所述阀芯座的外周壁，所述通孔部的数量至少为两个，所述通孔部沿所述阀芯座的外周壁等圆周分布，所述通孔部呈扁孔状，所述通孔部形成的孔腔能够与所述阀口连通。
  12. 根据权利要求1-3任一项所述的电动阀，其特征在于：所述阀部件包括连接座，所述连接座具有第一容纳腔，所述阀芯组件包括限位部，所述限位部为非旋转体，所述限位部位于所述第一容纳腔，所述连接座包 括配合部，所述限位部与所述配合部配合，对所述阀芯组件的周向转动进行限位；
    所述阀部件包括支撑构件，所述支撑构件与所述连接座固定连接，所述支撑构件位于所述丝杆的部分的外周，所述支撑构件对所述丝杆的轴向运动进行限位。
  13. 根据权利要求12所述的电动阀，其特征在于：所述限位部包括限位部侧面，所述配合部包括配合部侧面，所述限位部侧面与所述配合部侧面抵接，所述配合部的轴向高度大于所述限位部的轴向高度；
    所述支撑构件包括支撑架、轴承、套筒，所述支撑架与所述连接座固定连接，所述轴承位于所述丝杆的部分的外周，所述轴承与所述支撑架固定连接，所述套筒位于所述丝杆的部分的外周，所述套筒与所述丝杆固定连接，所述丝杆包括凸缘部，所述凸缘部沿所述丝杆的径向向外凸起形成，沿所述丝杆的轴向，所述轴承位于所述凸缘部和所述套筒之间，所述凸缘部和所述套筒分别能够与所述轴承抵接。
  14. 根据权利要求2所述的电动阀，其特征在于：所述阀芯包括第一铆压部和第一安装部，沿所述阀芯的轴向，所述第一铆压部高出所述第一安装部设置，所述第一铆压部和所述第一安装部之间形成有所述第一台阶部，所述第一安装部形成第一安装腔，部分所述螺母件位于所述第一安装腔，所述第一铆压部压紧所述螺母件于所述第一铆压部和所述第一台阶部之间。
  15. 根据权利要求2所述的电动阀，其特征在于：以所述阀芯为注塑嵌件，一体注塑形成所述螺母件，所述螺母件与所述阀芯注塑固定。
PCT/CN2021/142349 2020-12-30 2021-12-29 电动阀 Ceased WO2022143734A1 (zh)

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US12379033B2 (en) 2025-08-05
CN114688270A (zh) 2022-07-01
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