WO2023274394A1 - Soupape électrique - Google Patents

Soupape électrique Download PDF

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Publication number
WO2023274394A1
WO2023274394A1 PCT/CN2022/103264 CN2022103264W WO2023274394A1 WO 2023274394 A1 WO2023274394 A1 WO 2023274394A1 CN 2022103264 W CN2022103264 W CN 2022103264W WO 2023274394 A1 WO2023274394 A1 WO 2023274394A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
opening
valve core
along
spool
Prior art date
Application number
PCT/CN2022/103264
Other languages
English (en)
Chinese (zh)
Inventor
陈海涛
边奇铠
赵杨军
Original Assignee
浙江三花汽车零部件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202110748617.1A external-priority patent/CN115560093A/zh
Priority claimed from CN202110748618.6A external-priority patent/CN115560094A/zh
Application filed by 浙江三花汽车零部件有限公司 filed Critical 浙江三花汽车零部件有限公司
Publication of WO2023274394A1 publication Critical patent/WO2023274394A1/fr

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    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/083—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with tapered plug
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/10—Means for additional adjustment of the rate of flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present application relates to the field of fluid control, in particular to an electric valve.
  • the electric valve can be applied to the vehicle refrigerant circulation system.
  • the electric valve includes a control device and a valve core.
  • the output torque of the control device drives the movement of the valve core. How to design an electric valve can help improve the linearity of the electric valve flow curve and improve the control accuracy? A technical issue to be improved.
  • the purpose of the present application is to provide an electric valve, which is conducive to improving the linearity of the flow curve of the electric valve and improving the control accuracy.
  • An electric valve comprising a valve core, the valve core has a first opening, a second opening and a hole, the first opening is located on the outer peripheral surface of the valve core, at least part of the outer peripheral surface is along the Extend axially or approximately along the axial direction of the valve core, the second opening is located on the outer peripheral surface of the valve core or the end surface of the valve core, the first opening and the second opening are located on the valve core
  • the hole is located inside the valve core and communicates with the first opening and the second opening
  • the valve core has a throttling groove, and the throttling groove communicates with the first opening
  • the throttling groove is recessed inwardly from the outer peripheral surface of the valve core, and the throttling groove extends from the first opening along the outer peripheral surface of the valve core.
  • the application provides an electric valve.
  • the valve core has a first opening, a second opening and a hole. Along the axial direction of the valve core, the first opening and the second opening are staggered. It is recessed from the outer peripheral surface of the valve core, and the throttling groove extends from the first opening along the outer peripheral surface of the valve core.
  • the space allows the throttling groove to cover the outer peripheral surface of the valve core in a large range.
  • the larger the angle of the spool circumference occupied by the throttle groove the smoother the change of the throttling area of the throttle groove along the length direction of the throttle groove, and the better the linearity of the electric valve flow curve, which is conducive to improving the control accuracy of the electric valve.
  • Fig. 1 is the three-dimensional structure schematic diagram of the first embodiment of electric valve
  • Fig. 2 is a schematic cross-sectional structure diagram of the electric valve shown in Fig. 1;
  • Fig. 3 is a schematic cross-sectional structure diagram of the valve body shown in Fig. 2;
  • Fig. 4 is a three-dimensional structural schematic diagram of an angle of the spool shown in Fig. 2;
  • Fig. 5 is a schematic view of the side view angle structure of the spool shown in Fig. 2;
  • Fig. 6 is a schematic structural view of the main viewing angle of the spool shown in Fig. 2;
  • Fig. 7 is a schematic cross-sectional structure diagram of the spool shown in Fig. 6 along the A-A direction;
  • Fig. 8 is a schematic cross-sectional structure diagram of the spool shown in Fig. 6 along the B-B direction;
  • Fig. 9 is a schematic cross-sectional structure diagram of the first positioning part shown in Fig. 2;
  • Fig. 10 is a schematic cross-sectional structure diagram of the second positioning part shown in Fig. 2;
  • Fig. 11 is a schematic perspective view of the first valve seat shown in Fig. 2;
  • Fig. 12 is a schematic diagram of the assembly process of the valve core and the valve body shown in Fig. 2;
  • Fig. 13 is a schematic structural view of the first embodiment of the electric valve when the electric valve is partially opened;
  • Fig. 14 is a schematic cross-sectional structure diagram of the electric valve shown in Fig. 13 along the C-C direction;
  • Fig. 15 is a schematic cross-sectional structure diagram of the electric valve shown in Fig. 13 along the D-D direction (the valve body is not shown);
  • Fig. 16 is a schematic cross-sectional structure diagram of the second embodiment of the electric valve
  • Fig. 17 is a schematic perspective view of the second embodiment of the first valve seat.
  • Electric valves can be used in vehicle thermal management systems or air-conditioning systems, especially in high-pressure fluid circulation circuits such as refrigerants, where vehicle thermal management systems include new energy vehicle thermal management systems.
  • the electric valve can be applied to the refrigerant circulation flow path.
  • the electric valve 100 includes a control device 1 , a valve body assembly 2 , a valve core 4 , and a sealing assembly 5 .
  • the valve body assembly 2 has a valve body cavity 210
  • the valve core 4 is located in the valve body cavity 210 .
  • the control device 1 includes an output shaft 11, the output shaft 11 outputs torque, the output shaft 11 is connected to the valve core 4 in transmission, the control device 1 is fixedly connected to the valve body assembly 2, and the electric valve 100 is electrically connected and/or signaled to the outside through the control device 1. connect.
  • the fixed connection between the control device 1 and the valve body assembly 2 specifically refers to the fixed connection between the shell of the control device 1 and the valve body assembly through screws in this embodiment.
  • the direction shown in Figure 2 is defined as the up-down direction.
  • the valve body assembly 2 includes a valve body 21, the valve body chamber 210 is located in the valve body 21, and the valve body 21 also includes an opening 213 and at least two communication parts.
  • the opening 213 forms an opening cavity 2130, which is closer to the control device 1 than the valve body cavity 210 along the direction of the axis OO' of the electric valve (hereinafter referred to as the axis of the electric valve).
  • the opening cavity 2130 communicates with the valve body cavity 210, and part of the control device 1 is located at the opening cavity 2130.
  • the valve body 21 includes two communication parts, namely a first communication part 211 and a second communication part 212 .
  • the first communication part 211 has a first passage 2111 and a first orifice 2112, the first orifice 2112 is located on the outer wall of the valve body 21, the first passage 2111 is located inside the valve body 21, the first orifice 2112 and the first passage 2111 connected.
  • the second communication part 212 has a second channel 2121 and a second orifice 2122, the second orifice 2122 is located on the outer wall of the valve body 21, and the second orifice 2122 and the first orifice 2112 are respectively located on the opposite side of the valve body 21.
  • first channel 2111 and the second channel 2121 Two outer walls, one of the first channel 2111 and the second channel 2121 can be used as the inlet channel of the electric valve, and the other can be used as the outlet channel, correspondingly, one of the first orifice 2112 and the second orifice 2122 One is used as the inlet of the electric valve, and the other is used as the outlet of the electric valve.
  • the valve body cavity 210 is located between the first channel 2111 and the second channel 2121.
  • the 2121 communicates through the valve body cavity 210, the first channel 2111 and the second channel 2121 are respectively located on different sides of the valve body cavity 210, along the axial direction of the electric valve, the first channel 2111 is closer to the control device 1 than the second channel 2121, the first channel 2111 and the second passage 2121 are axially staggered, and there is a height difference h1 between the first passage 2111 and the second passage 2121.
  • Setting the height difference h1 can make the inlet passage and the outlet passage not at the same height, which is beneficial to the design of the valve core.
  • the height difference between the first channel 2111 and the second channel 2121 refers to the height difference between the central axis of the first channel 2121 and the central axis of the second channel 2121 .
  • the spool 4 has various forms, such as spherical, needle-shaped, cylindrical, etc.
  • the valve core 4 includes an outer peripheral surface 40, and at least part of the outer peripheral surface 40 extends along the axial direction of the valve core or approximately along the axial direction of the valve core, "approximately along the
  • the "axial extension of the spool” means that the angle between the extension direction and the axial direction of the spool is less than 10°.
  • the outer peripheral surface 40 of the spool 4 is roughly cylindrical, that is, the spool 4 is specifically a spool column, and the corresponding electric valve is specifically an electric column valve.
  • the cylindrical spool Compared with the spherical outer peripheral surface of the spool, the cylindrical spool The processing and forming are relatively convenient, and can be realized by processing bar materials.
  • the outer peripheral surface 40 extends in the axial direction so that the valve core 4 can be inserted into the valve body cavity 210 from top to bottom.
  • the axis of the spool 4 is basically coincident with the axis of the electric valve 100.
  • the spool 4 includes a first opening 410, a second opening 420 and a hole 430. Referring to FIG.
  • the first opening 410 and the second The openings 420 are located at different heights, that is, the first opening 410 and the second opening 420 are arranged staggered along the axial direction of the valve core, and the second opening 420 is completely located below the first opening 410.
  • This arrangement can make the first opening 410 and the second opening 420 Not being located on the same circumference of the valve core 4 is beneficial to reducing the diameter of the valve core 4 and the radial dimension of the valve body, and at the same time reserves enough space for the throttling groove of the valve core.
  • the first opening 410 is closer to the control device 1 than the second opening 420 , and there is also a height difference h1 between the central axis of the first opening 410 and the central axis of the second opening 420 .
  • there is a gap h2 between the first opening and the second opening and the gap h2 is larger than the width of the sealing area used to seal the first opening or the second opening, specifically the width of the first opening 410 in this embodiment.
  • the gap h2 between the lower end and the upper end of the second opening 420 is at least larger than the width h3 of the sealing area for sealing the first opening 410 .
  • both the first opening 410 and the second opening 420 are located on the outer peripheral surface 40 of the valve core 4, the hole 430 is located inside the valve core 4, and the portion of the hole 430 is arranged along the axial direction of the valve core, so that the valve core is at least partially hollow, and the hole 430 communicates with the first opening 410 and the second opening 420 .
  • the second opening 420 can be a through hole with a larger diameter or multiple through holes with a smaller diameter.
  • the second opening 420 includes a plurality of first through holes 420a, and the plurality of first through holes 420a are Evenly distributed along the circumference of the spool 4.
  • the second opening 420 is in communication with the second channel 2121, the central axis of the first opening 410 is basically coincident with the central axis of the first channel 2111, and the first opening 410 can be fully or partially communicated with the first channel 2111 by rotating the valve core 4 Or completely disconnected, no matter where the valve core 4 is located, the second opening 420 is always open, which is beneficial to reduce the pressure drop loss of the refrigerant flowing through the valve core.
  • the second orifice 2122 can be used as an inlet of the electric valve, and the first orifice 2112 can be used as an outlet of the electric valve.
  • the refrigerant enters from the second orifice 2122, flows through the second channel 2121, and enters the valve from the second opening 420.
  • the hole 430 inside the core 4, the control device 1 drives the valve core 4 to rotate through the output shaft 11, so that the first opening 410 is at least partially connected with the first passage 2111, and the refrigerant can leave the valve core from the first opening 410 and pass through the first passage 2111 exits the electric valve 100 from the first orifice 2112.
  • the first opening 410 is completely disconnected from the first channel 2111 , that is, when the electric valve is closed, the refrigerant fills the hole 430 of the valve core 4 but cannot leave the first opening 410 .
  • the second orifice 2122 can also be used as the outlet of the electric valve, and the corresponding first orifice 2112 can be used as the inlet of the electric valve.
  • valve core 4 also has a throttling groove 440, which is recessed inward from the outer peripheral surface 40 of the valve core 4, and the throttle groove 440 communicates with the first opening 410, specifically, the throttle groove 440 is formed from the valve core 4.
  • the first opening 410 extends along the outer peripheral surface 40 of the valve core, and the end of the second opening 420 is always in a normally open state, so there is no need to set a throttle groove.
  • the cross-sectional shape of the throttle groove 440 along the axial direction of the valve core can be V-shaped, rectangular or other shapes. In this embodiment, the cross-sectional shape of the throttle groove 440 along the axial direction of the valve core is V-shaped.
  • the throttle groove 440 has a first End 441 and tail end 442 , the head end 441 is located on the periphery of the first opening 410 , from the head end 441 to the tail end 442 , the width of the throttling groove 440 decreases gradually, and the groove depth of the throttle groove 440 gradually decreases.
  • the groove width refers to the width of the throttle groove along the axial direction of the valve core
  • the groove depth refers to the depth of the throttle groove along the radial direction of the valve core.
  • the throttling groove 440 extends along the circumference of the valve core
  • Figure 8 is a cross section 480 of the valve core perpendicular to the axis of the valve core, since the first opening 410 and the second opening 420 are along the Axially staggered settings, so based on the circumference of the spool where the center of the first opening 410 is located, except for the first opening 410 and the sealing area required for the reserved fully closed state, the remaining circumference of the spool 4 can be used as a throttling opening
  • the area of the groove for example, reserves 90° for the sealing area required by the first opening 410 and the fully closed state, so that the coverage angle of the throttle groove 440 on the circumference of the valve core 4 can reach 270°, that is, the valve core 4 is opened to throttle
  • the outer peripheral surface 40 of the groove 440 is a reference, and the included angle ⁇ between the line connecting the head end 441 of the throttle groove 440 and the center of the cross section 480 and the line connecting
  • the projection of the groove bottom of the throttling groove 440 on the cross-section 480 perpendicular to the axis of the valve core is a part of the helix, that is, the throttling groove 440 is in a helical direction, which is beneficial to the smooth and uniform flow curve of the electric valve.
  • the angle ⁇ is 0-30°. in a vertical plane.
  • the smaller the ⁇ angle the more slender the throttle groove 440, along the length direction of the throttle groove 440, the smoother the throttle area of the throttle groove 440 changes, the better the linearity of the flow curve of the electric valve, which is beneficial to improve the control accuracy.
  • the included angle ⁇ is the angle between the tangent line of the groove edge and the centerline of the throttle groove 440 .
  • the V-shaped throttling groove is more convenient for tool processing, and the burr treatment on the edge of the throttling groove 440 is simpler, which can reduce the friction loss between the valve core and the sealing assembly 5, and prolong the service life of the electric valve.
  • the electric valve 100 shown in Fig. 2 is in a fully open state, the first opening 410 is fully connected with the first channel 2111, the refrigerant enters from the second orifice 2122, passes through the second channel 2121, the second opening 420, the channel 430, the second After an opening 410 , the first channel 2111 leaves the electric valve 100 from the first orifice 2112 .
  • Fig. 13-Fig. 15 are schematic diagrams when the electric valve 100 is partially opened.
  • the throttling groove 440 communicates with the first passage 2111, and the refrigerant can flow along the throttling groove 440 after entering the hole 430 It flows into the first channel 2111, and then leaves the electric valve 100 through the first orifice 2112, and the throttling groove 440 acts as throttling and expanding.
  • a two-way valve is given in this embodiment, and it can be understood that the electric valve can also be extended to be applied to a three-way or multi-way valve.
  • the electric valve 100 also includes a first positioning portion 22 and a second positioning portion 23.
  • the first positioning portion 22 is located on the side of the valve core 4 relatively far away from the control device 1
  • the second The positioning portion 23 is located on a side of the valve core 4 relatively close to the control device 1 .
  • the valve body 21 has a first installation groove 220 which is close to the bottom of the valve body cavity 210 . The opening of the first installation groove 220 faces the side where the control device 1 is located.
  • the first positioning part 22 is shown in Figure 9, the section of the first positioning part 22 along the axial direction of the electric valve is roughly "convex" shape, and the central axis of the first positioning part 22 coincides or tends to coincide with the central axis of the valve body cavity 210 For example, if the offset between the central axis of the first positioning portion 22 and the central axis of the valve body cavity 210 is less than 0.02 mm, it can be considered that the central axis of the first positioning portion 22 tends to coincide with the central axis of the valve body cavity 210 .
  • the first positioning part 22 includes a first flange part 222 and a first main body part 221.
  • the first flange part 222 extends outward from the first main body part 222 along the radial direction of the first positioning part 22.
  • the first flange part The lower end surface of 222 abuts against the groove bottom wall forming the first mounting groove 220, the outer peripheral wall of the first flange portion 222 abuts against the groove side wall forming the first mounting groove 220, and the first positioning portion 22 abuts against the groove side wall forming the first mounting groove 220.
  • the groove wall of the installation groove 220 is interference fit.
  • the first positioning portion 22 has a second through hole 223 disposed along the axial direction of the first positioning portion 22 and passing through the first positioning portion 22 .
  • the first positioning portion 22 also has a concave portion 224 , and the concave portion 224 is formed inwardly from the lower end surface of the first flange portion 222 .
  • the first positioning part 22 is pressed into the first installation groove 220 from the opening 2130, the first positioning part 22 is in interference fit with the valve body 21, and the lower end of the first flange part 222 is provided with a concave part 224 to reduce the size of the first positioning part 22.
  • the small area of the contact surface with the valve body 21 is easy to ensure the flatness of the first positioning portion 22 , thereby helping to ensure the coaxiality between the first positioning portion 22 and the valve body cavity 210 .
  • a chamfered part may be provided at the lower end of the first positioning part 22, and the chamfered part is less than or equal to 30°, as shown in FIG. 9 .
  • the end of the spool 4 that is relatively far away from the control device 1 is defined as the first end 41
  • the end of the spool 4 that is relatively close to the control device 1 is the second end 42
  • the first end 41 of the spool has a positioning corresponding to the first positioning portion 22.
  • Structure, a feasible installation structure is shown in Figure 2 and Figure 7, the hole 430 of the valve core 4 runs through the first end 41 of the valve core 4 along the axial direction of the valve core, and part of the first main body part 221 is located in the valve core 4
  • the first main body part 221 of the first positioning part 22 can be inserted into the first end 41 of the spool 4.
  • the spool 4 and the first main body part 221 are clearance fit.
  • the first body parts 221 may also be slidingly fitted to facilitate the rotation of the valve core 4 in the circumferential direction, and the end surface 411 of the first end 41 of the valve core 4 is in contact with the first flange part 222 or provided with a gap.
  • the hole 430 may not pass through the first end of the valve core, and a positioning groove for cooperating with the first positioning part is additionally provided on the first end of the valve core.
  • the second positioning portion 23 includes a second main body portion 231 and a second flange portion 232 .
  • the second flange portion 232 extends radially outward from the second main body portion 231 along the second positioning portion 23 .
  • at least part of the second body part 231 is closer to the first positioning part 22 than the second flange part 232 , and the second step part 450 and the second body part 231 can be provided with a gap.
  • the central axis of the second positioning portion 23 coincides or tends to coincide with the central axis of the valve body cavity 210.
  • the allowable offset between the central axis of the second positioning portion 23 and the central axis of the valve body cavity 210 is less than 0.02 mm, which can be considered as the second
  • the central axis of the positioning portion 23 tends to coincide with the central axis of the valve body cavity 210 .
  • the second positioning part 23 has a third through hole 233, and the second end 42 of the valve core 4 is at least partly located in the third through hole 233.
  • the second positioning part 23 and the outer circumference of the valve core 4 There is also a gap fit between the surfaces 40, that is, the inner diameter of the third through hole 233 is slightly larger than the outer diameter of the corresponding valve core 4, so that there is a certain gap between the inner wall of the second positioning part 23 and the outer wall of the valve core 4, such as 0-0.02mm
  • the gap can make the valve core 4 unimpeded when it rotates in the circumferential direction.
  • the second positioning part 23 and the outer peripheral surface 40 of the valve core 4 can also be a sliding fit.
  • the valve body 21 has a first stepped portion 214 , the first stepped portion 214 is located at the upper end of the valve body cavity 210 , and the first stepped portion 214 is closer to the control device 1 than the valve body cavity 210 .
  • the valve core 4 has a second stepped portion 450, the second stepped portion 450 is located on a side relatively close to the control device 1, the stepped surface of the second stepped portion 450 is opposite to the lower end surface of the second positioning portion 23 and has a certain gap, the second stepped portion 450
  • the second positioning portion 23 can restrict the upward movement of the valve core in the axial direction, and the valve core 4 can move upwards at most until it abuts against the second positioning portion 23 , and cannot continue to move upwards.
  • the second positioning portion 23 is pressed into the valve body cavity 210 from the opening cavity 2130 until abutting against the first step portion 214 . Because the high-pressure fluid such as refrigerant has a relatively high pressure, when flowing through the valve core 4, the high-pressure fluid will directly or indirectly exert pressure on the valve core 4, so that the valve core 4 may tilt or float up and down under the pressure. , it may happen that the valve core 4 is directly stuck by the sealing assembly 5 or the output shaft cannot drive the valve core 4 to rotate, thereby affecting the stability of the electric valve. In this embodiment, the first positioning part 22 and the second positioning part 23 are aligned.
  • the first end 41 and the second end 42 of the spool 4 are positioned to limit the floating of the spool 4 in the axial direction, so that the spool 4 can only rotate in the circumferential direction.
  • the center of the first positioning part 22 and the second positioning part 23 The axis basically coincides with the central axis of the valve body cavity, and the first positioning part 22 and the second positioning part 23 cooperate with the valve core clearance in the circumferential direction, which is beneficial to better reduce the tilt or excess of the valve core due to the influence of high-pressure fluid pressure.
  • the possibility of offset helps to ensure the coaxiality of the valve core 4 and the valve body cavity 210, reduces the dimensional chain calculation of the assembly of the valve core 4 relative to the valve body, and improves the stability of the electric valve.
  • first positioning part and the second positioning part are not limited to the way shown in the drawings, for example, the first positioning part can be in the form of a groove, and the corresponding valve core is provided with a protrusion and the first positioning part Cooperate.
  • the sealing assembly 5 includes a first valve seat 51 and a first sealing member 52.
  • the first valve seat 51 includes an arc-shaped surface 511 and a third flange portion 512. 512 extends outward from the main body of the first valve seat 51 along the radial direction of the valve body cavity. 511 and the third flange portion 512 are located at both ends of the first valve seat 51, and the arc surface 511 is formed by inward depression from the main body of the first valve seat 51. At least part of the arc surface 511 and the outer peripheral surface 40 of the valve core 4 Fitting, in this embodiment, the arc surface is a cylindrical arc surface.
  • the first valve seat 51 also has a fourth through hole 513 .
  • the fourth through hole 513 is arranged through the first valve seat 51 along the radial direction of the valve body cavity.
  • the fourth through hole 513 communicates with the first channel 2111 .
  • the valve body 21 has a first concave portion 215, the first concave portion 215 forms a first concave cavity 2150, the first concave cavity 2150 is a part of the valve body cavity 210, and the first concave cavity 2150 is located on the side of the valve body cavity 210 close to the first communication portion 211 , the first cavity 2150 communicates with the first channel 2111 , and at least part of the sealing assembly 5 is located in the first cavity 2150 .
  • the sealing assembly 5 Seen from the radial direction of the valve body cavity 210, the sealing assembly 5 is located on the side of the valve core 4 close to the first channel 2111, and the arc surface 511 of the first valve seat 51 is at least partially attached to the outer peripheral surface 40 of the valve core 4, and the arc surface
  • the area where 511 fits with the outer peripheral surface 40 of the valve core 4 is the sealing area, and the diameter of the sealing area usually needs to be 3-5mm larger than the diameter of the first opening 420 to ensure a better sealing effect.
  • the shape surface 511 is a sliding fit.
  • the aforementioned width h3 of the sealing area used to seal the first opening 410 is the width of the arc-shaped surface 511 of the first valve seat.
  • the electric valve 100 also includes an elastic assembly, the elastic assembly includes a second valve seat 61 and an elastic member 62, the second valve seat 61 and the first valve seat 51 are arranged symmetrically with respect to the central axis of the valve core 4, and the elastic member 62 is sealed with the first The member 52 is arranged symmetrically with respect to the central axis of the spool 4 .
  • the valve body 21 has a second concave portion 216, the second concave portion 216 forms a second concave cavity 2160, the second concave cavity 2160 is a part of the valve body cavity 210, and the second concave cavity 2160 is located on the side of the valve body cavity 210 away from the first communication portion 211 , at least a part of the second valve seat 61 and the elastic member 62 are located in the second cavity 2160 , and along the radial direction of the valve body cavity 210 , the elastic member 62 is compressed between the second recess 216 and the second valve seat 61 .
  • the valve core 4 is limited between the sealing assembly and the elastic assembly, and the elastic member 62 and the second valve seat 61 play a role in balancing the pressure of the sealing assembly 5 on the valve core 4, which is beneficial to the force balance on both sides of the valve core 4.
  • the production and assembly are convenient.
  • the structure of the second valve seat 61 is the same as that of the first valve seat 51.
  • the elastic member 62 has the same structure as the first sealing member 52, for example, an O-ring.
  • the first sealing member 52 can prevent the refrigerant from leaving the valve body 21 through the first opening 410 through the first passage 2111 and the first orifice 2112 when the electric valve is fully closed, and there is no need for refrigerant to leave the valve body 21 on the side around the second opening 420 and the second passage 2121 A sealing structure is arranged between them. In order to ensure the sealing effect, it is only necessary to improve the manufacturing accuracy of the valve core on the side of the first opening, so that the manufacturing difficulty of the valve core 4 can be reduced. In addition, compared with the spherical valve core, the contact area between the cylindrical valve core and the valve seat in this embodiment is relatively reduced, which is beneficial to reduce the driving force required by the control device.
  • the sealing component and the elastic component can provide support for the valve core in the radial direction, and the first sealing member and the elastic component provide a tight holding force for the valve core so that the valve core is limited between the sealing component and the elastic component, and the valve core and the first
  • the sliding fit between the valve seat and the second valve seat helps to reduce the possibility of the valve core being tilted or excessively deflected, and ensures the coaxiality of the valve core and the valve body cavity.
  • the spool 4 has an in-position part 460, which is located at the first end 41 of the spool 4, as shown in the lower end of Fig. 5, the in-position part 460
  • the diameter gradually decreases along the direction away from the second end 42 of the valve core 4, and at least part of the diameter D1 of the seating portion 460 is smaller than the radial distance D2 between the first valve seat 51 and the second valve seat 61 when the valve core 4 is not installed.
  • the first sealing member 52 and the elastic member 62 are in an uncompressed state. Setting the in-position portion 460 is beneficial for the valve core to pass through the area between the sealing assembly 5 and the elastic assembly.
  • the in-position portion 460 also has the function of correcting the positions of the first valve seat 51 and the second valve seat 61 , which is beneficial to mass production assembly.
  • the valve core 4 also has an insertion chamber 470, the insertion chamber 470 is located at the second end 42 of the valve core 4, along the axial direction of the valve core 4, the first opening 410 is located between the in-position portion 460 and the insertion cavity 470, and the throttling groove 440 It is also located between the in-position portion 460 and the insertion cavity 470 .
  • the control device 1 also includes a driving part and a transmission mechanism 14.
  • the driving part includes a rotor assembly 12 and a stator assembly 13.
  • the rotor assembly 12 is located on the inner periphery of the stator assembly 13.
  • the stator assembly 13 is electrically connected and/or signally connected to the circuit board. It may be built in the control device, and the circuit board may not be located in the control device.
  • the circuit board in this embodiment is not located in the control device, and the structure of the circuit board is not shown in the corresponding drawings.
  • the rotor assembly 12 has a rotor chamber 120, at least part of the transmission mechanism 14 is located in the rotor chamber 120, and at least part of the transmission mechanism 14 is located in the rotor chamber 120, which is beneficial to reduce the axial height of the electric valve.
  • the stator assembly 13 After the stator assembly 13 is energized, the stator assembly 13 generates an excitation magnetic field, and the rotor assembly 12 drives the transmission mechanism 14 to rotate under the excitation of the magnetic force, and the transmission mechanism 14 drives the output shaft 11 to rotate.
  • the end of the spool 4 is located in the insertion cavity 470 of the second end 42 of the valve core 4, and a certain gap is reserved with the cavity wall forming the insertion cavity 470.
  • the rotation of the output shaft 11 can drive the rotation of the spool 4, so that the first opening 410 and the first channel 2111 is partially connected or fully connected or not connected at all.
  • the throttling groove 440 is connected with the first passage 2111.
  • the groove 440 is not in communication with the first channel 2111, so as to realize the flow control and on-off adjustment of the electric valve.
  • the structure of the control device is varied, and is not limited to the structure given in this embodiment, and other control devices capable of driving the output shaft can be used as a reference.
  • the transmission connection between the output shaft and the spool can be in addition to a clearance fit or an interference fit, so that the output shaft can drive the spool to rotate.
  • the control device 1 further includes a connecting seat 15 , and the central axis of the connecting seat 15 coincides with or tends to coincide with the central axis of the spool cavity 210 .
  • the connecting seat 15 has a receiving cavity 150 , and part of the transmission mechanism 14 is located in the receiving cavity 150 , and the connecting seat 15 is fixedly connected with the valve body assembly 2 .
  • the connecting seat 15 has a fourth flange portion 151, the fourth flange portion 151 extends outward from the main body of the connecting seat 15 along the radial direction of the connecting seat 15, the connecting seat 15 has a hole portion 152, and the hole portion 152 is located at the bottom of the connecting seat 15.
  • the central part passes through the connecting seat 15 in the axial direction, the central axis of the hole 152 coincides or tends to coincide with the central axis of the connecting seat 15, at least part of the output shaft 11 is located in the hole 152, and the other part of the output shaft 11 is located in the valve core 4
  • the electric valve also includes a compression nut 7, the compression nut 7 is sleeved on the radial outer periphery of the main body of the connecting seat 15, the compression nut 7 abuts against an end surface of the fourth flange portion 151, the compression nut 7 and the valve
  • the body assembly 2 is threaded, so that the connection seat 15 is fixedly connected with the valve body assembly 2.
  • connection seat 15 and the valve body assembly 2 , which is beneficial to prevent refrigerant from leaking from the assembly gap between the connection seat 15 and the valve body assembly 2 .
  • the valve body assembly 2 further includes a positioning post 24 , and the positioning post 24 is in limited fit with the connecting seat 15 .
  • the central axis of the connecting seat 15 coincides or tends to coincide with the central axis of the valve core chamber 210
  • the central axis of the hole 152 coincides or tends to coincide with the central axis of the connecting seat 15, and the output shaft 11 passes through the hole 152 and the valve core 4 Transmission connection
  • the connecting seat 15 is conducive to ensuring the coaxiality of the output shaft 11 and the valve body cavity 210
  • the first positioning part 22 and the second positioning part 23 are conducive to ensuring the coaxiality of the valve core 5 and the valve body cavity 210 , so the coaxiality between the output shaft 11 and the valve core 4 can be better guaranteed.
  • This embodiment also provides an assembly method of the electric valve, including:
  • the first positioning part 22 is press-fitted with the valve body 21 : the first positioning part 22 is pressed down from the upper opening 2130 of the valve body 21 into the first installation groove 220 at the bottom of the valve body cavity 210 .
  • the assembly of the sealing assembly 5, the elastic assembly and the valve body 21 the first sealing member 52 is sleeved on the third flange portion 512 of the first valve seat 51 to form the sealing assembly 5, and the sealing assembly 5 is opened from the opening cavity 2130 on the upper part of the valve body. Install it into the first recess 215 of the valve body 21 .
  • the elastic member 62 is sheathed on the flange of the second valve seat 61 to form an elastic assembly, and the elastic assembly is inserted into the second concave portion 216 of the valve body 21 from the opening 2130 .
  • the assembly sequence of the sealing component and the elastic component can be changed.
  • the spool 4 is inserted downward into the valve body cavity 210 from the opening 2130 on the upper part of the valve body, so that the first end 41 of the spool 4 is limitedly matched with the first positioning part 22 and positioned in the radial direction of the valve body cavity.
  • the core 4 is squeezed and limited by the sealing component and the elastic component.
  • Installation of the second positioning part 23 Press the second positioning part 23 from the opening 2130 on the upper part of the valve body until it abuts against the first stepped part 214 of the valve body 21, and the second positioning part 23 is aligned with the first position of the valve core 4. Two ends 42 are positioned.
  • valve body assembly 2 After the valve body assembly 2, sealing assembly 5, elastic assembly and valve core 4 are assembled, the valve body assembly 2 is pressed into the positioning column 24 and the seal to prevent external leakage, and the rotor assembly 12, transmission mechanism 14, The connecting seat 15 and the output shaft 11 are assembled to form a valve part, a part of the valve part is put into the valve body 21 from the opening cavity 2130 on the upper part of the valve body, the output shaft 11 is inserted into the insertion cavity 470 of the valve core 4, screwed into the compression nut 7, and passed The compression nut 7 fixes the valve part and the valve body assembly 2, and then the stator assembly 13 is pressed down from the upper part of the rotor assembly 23, and fixed with the valve body assembly 2 by screws to complete the assembly of the electric valve.
  • Fig. 16 is another embodiment of the electric valve of the present application.
  • the first opening 410 is still located on the outer peripheral surface 40 of the second end 42 of the valve core 4.
  • the difference from the previous embodiment is that in this embodiment
  • the second opening 420 of the spool 4 is located on the end surface 411 of the first end 41 of the spool 4 rather than on the outer peripheral surface 40 of the spool 4, that is, the hole 430 is provided along the axial direction of the spool and passes through the first end of the spool 4 41, there is no need to open a first through hole on the outer peripheral surface 40 of the valve core 4, and the corresponding second passage 2121 of the valve body 41 is no longer parallel to the first passage 2111, and the second passage and the first passage of 2121 are no longer parallel.
  • the channels 2111 are arranged at an angle of approximately 90°, and the first orifice 2112 and the second orifice 2122 are located on the adjacent outer wall of the valve body 41 . Due to the position change of the second opening 420, the structure of the first positioning part 22 has also been adjusted.
  • the first positioning part 22 also has a second through hole 223, but the diameter of the second through hole 223 is smaller than that of the second through hole shown in Fig. 2 and Fig. 9 .
  • the diameter of the through hole is larger, and here the second through hole 223 serves to connect the second opening 420 and the second channel 2121 , so a larger diameter is required.
  • the first positioning part 22 has a third step part 225, the third step part 225 is used for limiting the first end 41 of the valve core 4, and the end surface of the first end 41 of the valve core 4 abuts against the third step part 225 , the outer peripheral surface of the first end 41 of the valve core 4 is at least partially located in the first positioning portion 22 .
  • the valve body 41 is provided with a fourth step portion 217 for the installation and positioning of the first positioning portion 22 , and the first positioning portion 22 at least partially abuts against the fourth step portion 217 .
  • Fig. 17 is a second embodiment of the first valve seat 51.
  • the difference from the first valve seat shown in Fig. 11 is that there is a ring on the arc surface of the first valve seat 51 in this embodiment.
  • the annular protrusion 514 when the first opening 410 is fully closed, the annular protrusion 514 abuts against the outer peripheral surface of the valve core, and the annular protrusion 514 changes the surface seal with a wider contact surface into a line seal or surface seal with a smaller contact surface.
  • the sealing is beneficial to strengthen the sealing effect between the valve core 4 and the first valve seat 51 to prevent fluid leakage.

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

Abstract

Soupape électrique, comprenant un noyau de soupape (4). Le noyau de soupape (4) est pourvu d'une première ouverture (410), d'une seconde ouverture (420) et d'un canal, la première ouverture (410) et la seconde ouverture (420) étant décalées dans une direction axiale du noyau de soupape (4) ; une rainure d'étranglement (440) étant en communication avec la première ouverture (410), la rainure d'étranglement (440) étant en retrait vers l'intérieur à partir d'une surface périphérique externe (40) du noyau de soupape (4) et la rainure d'étranglement (440) s'étendant à partir de la première ouverture (410) le long de la surface périphérique externe (40) du noyau de soupape (4). La première ouverture (410) et la seconde ouverture (420) sont décalées dans la direction axiale du noyau de soupape (4), de telle sorte qu'un espace suffisant est réservé à la rainure d'étranglement (440), ainsi la rainure d'étranglement (440) peut recouvrir une plage relativement grande de la surface périphérique externe (40) du noyau de soupape (4), et plus l'angle circonférentiel du noyau de soupape (4) occupé par la rainure d'étranglement (440) est grand, plus le changement de la zone d'étranglement de la rainure d'étranglement (440) est graduel dans une direction longitudinale de la rainure d'étranglement (440), et plus la linéarité d'une courbe d'écoulement de la soupape électrique est bonne, ce qui est bénéfique pour améliorer la précision de commande de la soupape électrique.
PCT/CN2022/103264 2021-07-02 2022-07-01 Soupape électrique WO2023274394A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202110748618.6 2021-07-02
CN202110748617.1A CN115560093A (zh) 2021-07-02 2021-07-02 一种阀芯和电动阀
CN202110748617.1 2021-07-02
CN202110748618.6A CN115560094A (zh) 2021-07-02 2021-07-02 电动阀及其装配方法

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WO2023274394A1 true WO2023274394A1 (fr) 2023-01-05

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* Cited by examiner, † Cited by third party
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US20070044856A1 (en) * 2005-08-31 2007-03-01 Specialty Plastics Applications, Llc Diverter valve for water systems
CN1959165A (zh) * 2006-11-08 2007-05-09 大连创思福液力偶合器成套设备有限公司 旋转式切换阀
CN101135395A (zh) * 2006-08-31 2008-03-05 株式会社不二工机 混合阀
JP2012117764A (ja) * 2010-12-01 2012-06-21 Shinfuji Burner Kk 燃料バルブ
CN103423480A (zh) * 2013-08-30 2013-12-04 宁波万安股份有限公司 一种线性流量旋塞燃气阀
CN105065702A (zh) * 2015-07-16 2015-11-18 浙江福瑞科流控机械有限公司 提升式旋塞阀及其控制方法
CN105299263A (zh) * 2015-10-26 2016-02-03 佳马机械涂覆科技（苏州）有限公司 一种应用于输送硅胶色浆的换向阀
US20190049021A1 (en) * 2017-08-08 2019-02-14 Magna Powertrain Bad Homburg GmbH Rotary valve having a sliding seal
CN209041730U (zh) * 2018-09-20 2019-06-28 中山古奇诺智能厨房有限公司 一种多样控火的燃气灶气阀
WO2020259380A1 (fr) * 2019-06-24 2020-12-30 浙江三花智能控制股份有限公司 Ensemble de gestion de fluide

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070044856A1 (en) * 2005-08-31 2007-03-01 Specialty Plastics Applications, Llc Diverter valve for water systems
CN101135395A (zh) * 2006-08-31 2008-03-05 株式会社不二工机 混合阀
CN1959165A (zh) * 2006-11-08 2007-05-09 大连创思福液力偶合器成套设备有限公司 旋转式切换阀
JP2012117764A (ja) * 2010-12-01 2012-06-21 Shinfuji Burner Kk 燃料バルブ
CN103423480A (zh) * 2013-08-30 2013-12-04 宁波万安股份有限公司 一种线性流量旋塞燃气阀
CN105065702A (zh) * 2015-07-16 2015-11-18 浙江福瑞科流控机械有限公司 提升式旋塞阀及其控制方法
CN105299263A (zh) * 2015-10-26 2016-02-03 佳马机械涂覆科技（苏州）有限公司 一种应用于输送硅胶色浆的换向阀
US20190049021A1 (en) * 2017-08-08 2019-02-14 Magna Powertrain Bad Homburg GmbH Rotary valve having a sliding seal
CN209041730U (zh) * 2018-09-20 2019-06-28 中山古奇诺智能厨房有限公司 一种多样控火的燃气灶气阀
WO2020259380A1 (fr) * 2019-06-24 2020-12-30 浙江三花智能控制股份有限公司 Ensemble de gestion de fluide

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