WO2024114104A1 - 控制阀 - Google Patents

控制阀 Download PDF

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Publication number
WO2024114104A1
WO2024114104A1 PCT/CN2023/123438 CN2023123438W WO2024114104A1 WO 2024114104 A1 WO2024114104 A1 WO 2024114104A1 CN 2023123438 W CN2023123438 W CN 2023123438W WO 2024114104 A1 WO2024114104 A1 WO 2024114104A1
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WO
WIPO (PCT)
Prior art keywords
screw
valve needle
barrel
elastic member
along
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/CN2023/123438
Other languages
English (en)
French (fr)
Inventor
谭超智
卢音波
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.)
BYD Co Ltd
Original Assignee
BYD 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 BYD Co Ltd filed Critical BYD Co Ltd
Priority to EP23896260.9A priority Critical patent/EP4628764A4/en
Publication of WO2024114104A1 publication Critical patent/WO2024114104A1/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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F16K1/38—Valve members of conical shape
    • F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
    • 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
    • F16K1/482—Attaching valve members to screw-spindles with a collar on the spindle or a groove in the spindle, by which a fixing element is supported, the spindle reaching into the valve member
    • F16K1/485—Attaching valve members to screw-spindles with a collar on the spindle or a groove in the spindle, by which a fixing element is supported, the spindle reaching into the valve member with a groove in the 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means

Definitions

  • the present application relates to the field of fluid control valves, and in particular to a control valve.
  • Control valves are mainly used in refrigeration systems.
  • the electromagnetic coil controls the rotation of the rotor.
  • the screw and the valve core rotate together to make the valve needle approach or move away from the valve port, thereby adjusting the flow area of the valve port to adjust the refrigerant flow.
  • the screw needs to be rotated to ensure sealing. At this time, the valve needle is likely to rotate relative to the valve port, causing wear and reducing service life.
  • the present application aims to solve one of the technical problems in the related art at least to some extent.
  • a control valve comprising: an outer shell, a housing space is provided in the outer shell, and the outer shell is provided with an inlet and an outlet connected to the housing space; a valve core, the valve core is fixedly arranged in the housing space, the valve core is provided with a through hole penetrating along a first direction, and at least a portion of the inner wall of the through hole is provided with an internal thread; a valve needle, the valve needle is movably arranged in the housing space, and the valve needle is provided with a matching portion and an adjusting portion; a screw assembly, the screw assembly comprises a screw and a limiter, the screw comprises a rod portion and a barrel portion distributed along the first direction, the rod portion is provided with an external thread matching with the internal thread, the barrel portion is arranged at one end of the rod portion close to the outlet, a screw cavity is provided in the barrel portion, the matching portion is movably arranged in the screw cavity, and the adjusting portion is located in the screw Outside
  • the screw rotates relative to the valve core, and the screw moves in the first direction under the cooperation of the internal thread and the external thread.
  • the screw pushes the valve needle downward through the elastic member; when the screw moves upward, the screw drives the valve needle upward through the limit member.
  • the valve needle is driven to approach or move away from the outlet, so as to adjust the fluid flow of the outlet through the adjustment part.
  • Gasket The side that contacts the screw is an arc surface, which reduces the contact area between the elastic component and the screw, and reduces the rotational friction between the elastic component and the screw.
  • valve needle stops at the edge of the outlet, the screw rotates and compresses the elastic part downward, the matching part is spaced apart from the bottom end of the barrel, and the arc surface structure of the gasket can reduce the rotational friction between the elastic component and the screw, thereby effectively reducing the wear caused by the rotation of the valve needle relative to the outlet, and improving the service life of the control valve.
  • FIG1 is a front view of a control valve according to an embodiment
  • Fig. 2 is a cross-sectional view of the control valve shown in Fig. 1 along C-C;
  • FIG. 3 is a partial enlarged view of point D in FIG. 2 .
  • the terms “installed”, “connected”, “connected”, “fixed” and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • installed can be a fixed connection, a detachable connection, or an integral connection
  • it can be a mechanical connection or an electrical connection
  • it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • the control valve 100 of the present application includes a housing 110 , a valve core 120 , a valve needle 130 , a screw assembly 140 , an elastic assembly 150 and a drive assembly.
  • the housing 110 has a receiving space 111 therein, and the housing 110 has an inlet 113 and an outlet 115 communicating with the receiving space 111 .
  • the valve core 120 is fixedly disposed in the accommodating space 111 .
  • a through hole 121 extending along a first direction a is formed on the valve core 120 .
  • At least a portion of an inner wall of the through hole 121 is formed with an internal thread 1211 .
  • the valve needle 130 is movably disposed in the accommodating space 111 , and the valve needle 130 is provided with a matching portion 131 and an adjusting portion 133 ;
  • the screw assembly 140 includes a screw 141 and a stopper 143.
  • the screw 141 includes a rod 1411 and a barrel 1413 distributed along the first direction.
  • the rod 1411 is provided with an external thread 14111 that matches the internal thread 1211.
  • the barrel 1413 is disposed at one end of the rod 1411 close to the outlet 115, i.e., the lower end as shown in the figure, and a screw cavity 14131 is disposed in the barrel 1413.
  • the matching portion 131 is movably disposed in the screw cavity 14131, the adjusting portion 133 is located outside the screw cavity 14131, and at least a portion of the stopper 143 is disposed in the screw cavity 14131 to limit the matching portion 131 from escaping from the screw cavity 14131 in a direction away from the rod 1411, so that the valve needle 130 can rotate relative to the barrel 1413 and move along the first direction a.
  • the elastic component 150 is used to realize elastic cooperation between the screw component 140 and the valve needle 130 along the first direction a.
  • the elastic component 150 includes an elastic member 151 and a gasket 153.
  • the elastic member 151 has a first end 1511 and a second end 1512 opposite to each other. The first end 1511 of the elastic member 151 presses the valve needle 130 in a direction away from the rod 1411, and the gasket 153 is arranged between the second end 1512 of the elastic member 151 and the screw 141.
  • the elastic member 151 is in a compressed state, the first end 1511 of the elastic member 151 applies a downward force to the valve needle 130, and the second end 1512 of the elastic member 151 applies an upward force to the screw 141 through the gasket 153, so that the valve needle 130 has a tendency to move downward relative to the screw 141.
  • the stopper 143 restricts the downward movement of the matching portion 131 , the matching portion 131 presses against the lower end of the tube portion 1413 .
  • the drive assembly is used to drive the screw 141 to rotate relative to the valve core 120.
  • the drive assembly includes a magnetic rotor 161 and an electromagnetic coil (not shown).
  • the magnetic rotor 161 is disposed in the accommodating space 111 and connected to one end of the rod 1411 away from the barrel 1413, so that when the electromagnetic coil is energized, the magnetic rotor 161 drives the screw 141 to rotate. According to the different directions of the current input by the electromagnetic coil, the magnetic rotor 161 rotates in different directions accordingly. It should be understood that the present application does not limit the drive assembly, and it only needs to be able to drive the screw to rotate relative to the valve core.
  • the screw rod 141 rotates relative to the valve core 120, and the screw rod 141 moves along the first direction a, that is, moves upward or downward as shown in the figure, under the cooperation of the internal thread 1211 and the external thread 14111.
  • the screw rod 141 moves downward, the screw rod 141 pushes the valve needle 130 downward through the elastic member 151; when the screw rod 141 moves upward, the screw rod 141 drives the valve needle 130 upward through the limiter 143.
  • the valve needle 130 is driven to approach or move away from the outlet 115, so as to adjust the fluid flow of the outlet 115 through the adjustment portion 133.
  • the side where the gasket 153 abuts against the screw 141 is an arc surface, which reduces the contact area between the elastic component 150 and the screw 141, and reduces the rotational friction between the elastic component 150 and the screw 141.
  • the elastic member 150 is arranged outside the screw cavity 14131 and is located on the side of the barrel 1413 away from the rod portion 1411, and the gasket 153 is arranged between the end of the barrel 1413 away from the rod portion 1411 and the elastic member 150.
  • the first end 1511 of the elastic member 150 abuts against the valve needle along the first direction a, so that the elastic member 150 is compressed between the screw 141 and the valve needle 130, thereby realizing the elastic fit between the screw assembly 140 and the valve needle 130 along the first direction a.
  • the elastic member 150 is disposed outside the screw cavity 14131" is only an embodiment of the present application. In other embodiments, the elastic member can also be disposed in the screw cavity.
  • the elastic member is disposed between the top of the matching portion of the valve needle and the bottom wall of the barrel.
  • the first end of the elastic member presses downward against the matching portion of the valve needle along the first direction a
  • the second end of the elastic member presses upward against the bottom wall of the barrel (i.e., the wall of the barrel 1413 close to the rod 1411) along the first direction a, which can also achieve elastic matching between the screw assembly and the valve needle along the first direction a.
  • the present application does not limit whether the elastic member is located in the screw cavity, as long as the "elastic matching between the screw assembly and the valve needle along the first direction a" can be achieved.
  • the elastic member 150 is a spring, which is located outside the screw cavity 14131 and sleeved on the valve needle 130.
  • the gasket 153 is annular and is also sleeved on the valve needle 130.
  • the valve needle 130 is provided with a boss 135, which is located between the matching portion 131 and the adjusting portion 133.
  • the boss 135 protrudes from the side wall of the valve needle 130 in a direction perpendicular to the first direction a, forming a step surface 1351 for the spring to abut.
  • the first end 1511 of the elastic member 151 presses against the step surface, and the second end 1512 of the elastic member 151 presses against the lower end of the barrel 1413 through the gasket 153, thereby realizing elastic cooperation between the screw assembly 140 and the valve needle 130 along the first direction a.
  • the elastic member 150 is a spring sleeved on the valve needle 130, and the gasket 153 is an annular member sleeved on the valve needle 130" facilitates the positioning of the elastic component 150 and is conducive to the elastic effect, but this is only one implementation method of the present application, and the present application does not limit this, as long as the elastic component can achieve elastic cooperation between the screw assembly and the valve needle along the first direction a.
  • the first end 1511 of the elastic member 151 presses against the step surface, and the second end 1512 of the elastic member 151 presses against the lower end of the barrel 1413 through the gasket 153, thereby realizing elastic cooperation between the screw assembly 140 and the valve needle 130 along the first direction a.
  • the valve needle 130 is provided with a guide portion 137, and the guide portion 137 is arranged between the matching portion 131 and the boss 135.
  • the radial dimension of the guide portion 137 is adapted to the radial dimension of the spring.
  • the spring is sleeved on the guide portion 137.
  • the spring and the guide portion 137 are guided and matched along the first direction a, so that the spring remains coaxial with the guide portion 137 and will not deviate during the movement, thereby improving the elastic matching accuracy of the spring, the screw rod 141 and the valve needle 130.
  • the guide portion 137 and the barrel portion 1413 are both cylindrical, and the guide portion 137 is adapted to the barrel portion 1413. At least part of the guide portion 137 is located in the screw cavity 14131, so that the guide portion 137 and the barrel portion 1413 are guided and matched along the first direction a, and the guide portion 137 can rotate relative to the barrel portion 1413.
  • the side wall 14135 is provided with a mounting opening 141351
  • the limiting member 143 includes a mounting portion 1431 and two limiting portions 1433
  • the mounting portion 1431 and the two limiting portions 1433 form a U-shaped structure
  • the mounting portion 1431 is matched and fixed with the mounting opening 141351
  • one end of the limiting portion 1433 is connected to the mounting portion 1431
  • the other end of the limiting portion 1433 extends into the screw cavity 14131 to prevent the matching portion 131 from escaping from the screw cavity 14131
  • the connecting portion 139 of the valve needle 130 passes through between the two limiting portions 1433.
  • the spacing between the two limiting portions 1433 is adapted to the radial dimension of the connecting portion 139, so that the connecting portion 139 can be moved between the two limiting portions 1433 and positioned.
  • the barrel 1413 and the matching portion 131 are both cylindrical, and the side surface of the matching portion 131 is guided and matched with the side wall 14135 of the barrel 1413, so that the matching portion 131 can rotate along the side wall 14135 of the barrel 1413 and move in the first direction a.
  • the guiding cooperation between the matching portion 131 and the barrel 1413 along the first direction a the guiding cooperation between the guide portion 137 and the barrel 1413 along the first direction a, and the guiding cooperation between the boss 135 and the housing 110 along the first direction a, the coaxiality of the screw assembly 140, the valve needle 141, and the outlet 115 can be effectively guaranteed, and the overall assembly accuracy of the control valve 100 can be improved.
  • the present application proposes a control valve 100, which includes a housing 110, a valve core 120, a valve needle 130, a screw assembly 140, an elastic assembly 150 and a drive assembly, wherein the housing 110 defines a receiving space 111, the valve core 130 is fixed in the receiving space 111, the screw assembly 140 is rotatably connected to the valve core 120, the screw assembly 140 includes a screw 141 and a stopper 143, the screw 141 is provided with a screw cavity 14131, the matching portion 131 of the valve needle 130 is movably arranged on the screw In the cavity 14131, elastic cooperation between the two is achieved by an elastic component 150 arranged between the screw assembly 140 and the valve needle 130, and the elastic component 150 includes an elastic member 151 and a gasket 153 arranged between the elastic member 151 and the screw assembly 140.
  • the driving assembly drives the screw 141 to rotate
  • the screw 141 moves along the first direction a and drives the valve needle 130 to approach or move away from the outlet 115.
  • the elastic component 150 can reduce the rotation

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

一种控制阀(100)，其包括外壳(110)、阀芯(120)、阀针(130)、螺杆组件(140)、弹性组件(150)以及驱动组件，外壳(110)限定容纳空间(111)，阀芯(120)固定于容纳空间(111)内，螺杆组件(140)与阀芯(120)转动连接，螺杆组件(140)包括螺杆(141)和限位件(143)，螺杆(141)设有螺杆腔(14131)，阀针(130)的配合部(131)活动设置于螺杆腔(14131)内，通过设置于螺杆组件(140)与阀针(130)之间的弹性组件(150)实现二者的弹性配合，且弹性组件(150)包括弹性件(151)及设置于弹性件(151)与螺杆组件(140)之间的垫片(153)，当驱动组件驱动螺杆(141)转动时，螺杆(141)沿第一方向移动，并带动阀针(130)靠近或远离出口(115)，弹性组件(150)能够减少阀针(130)随螺杆(141)的转动。

Description

控制阀
相关申请的交叉引用
本申请要求比亚迪股份有限公司于2022年11月30日提交的、名称为“控制阀”的、中国专利申请号“202223205570.3”的优先权。
技术领域
本申请涉及流体控制阀领域，具体涉及一种控制阀。
背景技术
控制阀主要应用于制冷系统中，由电磁线圈控制转子的旋转，通过螺杆与阀芯的转动配合，从而实现阀针接近或者远离阀口，从而调节阀口的流通面积，以实现制冷剂流量的调节。当阀针关闭阀口时，需要转动螺杆以保证密封，此时容易导致阀针相对阀口转动而造成磨损，降低使用寿命。
发明内容
本申请旨在至少在一定程度上解决相关技术中的技术问题之一。
根据本申请第一方面，提供一种控制阀，包括：外壳，外壳内设有容纳空间，外壳设有与容纳空间连通的进口和出口；阀芯，阀芯固定设置于容纳空间内，阀芯上设有沿第一方向贯穿的贯穿孔，贯穿孔的内壁的至少部分设有内螺纹；阀针，阀针可活动地设置于容纳空间内，阀针设有配合部和调节部；螺杆组件，螺杆组件包括螺杆和限位件，螺杆包括沿第一方向分布的杆部和筒部，杆部设有与内螺纹配合的外螺纹，筒部设置于杆部靠近出口的一端，筒部内设有螺杆腔，配合部可活动地设置于螺杆腔内，调节部位于螺杆腔外，限位件的至少部分设置于螺杆腔内以限制配合部沿远离杆部的方向脱出螺杆腔，使得阀针可相对筒部转动和沿第一方向活动；弹性组件，用于实现螺杆组件与阀针之间沿第一方向的弹性配合，弹性组件包括弹性件和垫片，弹性件具有相背的第一端和第二端，弹性件的第一端朝向远离杆部的方向抵压阀针，垫片设置于弹性件的第二端与螺杆之间，垫片与螺杆抵接的一侧为弧面；驱动组件，用于驱动螺杆相对阀芯转动，使得螺杆沿第一方向移动，并带动阀针靠近或远离出口，以通过调节部调节出口的流体流量。
通过螺杆相对阀芯转动，在内螺纹与外螺纹的配合下，螺杆沿第一方向移动。当螺杆向下移动时，螺杆通过弹性件推动阀针向下移动；当螺杆向上移动时，螺杆通过限位件带动阀针向上移动。从而带动阀针靠近或远离出口，以通过调节部调节出口的流体流量。垫片 与螺杆抵接的一侧为弧面，减少了弹性组件与螺杆之间的接触面积，减少弹性组件与螺杆之间的转动摩擦力。当需要关闭出口时，在控制阀针移动到关闭位置后，为了保证密封效果，仍需控制螺杆继续向下移动一段距离。此过程中，阀针与出口的边缘止抵，螺杆旋转并向下压缩弹性件，配合部与筒部的底端间隔开，且垫片的弧面结构可以减少弹性组件与螺杆之间的转动摩擦力，进而有效减少阀针相对出口的转动而造成的磨损，提升了控制阀的使用寿命。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
图1为一种实施例的控制阀的正视图；
图2为图1所示控制阀沿C-C的截面图；
图3为图2中D处的局部放大图。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
如图1至图2所示，本申请的控制阀100，包括外壳110、阀芯120、阀针130、螺杆组件140、弹性组件150以及驱动组件。
所述外壳110内设有容纳空间111，所述外壳110设有与所述容纳空间111连通的进口113和出口115。
所述阀芯120固定设置于所述容纳空间111内，所述阀芯120上设有沿第一方向a延伸的贯穿孔121，所述贯穿孔121的内壁的至少部分设有内螺纹1211。
所述阀针130可活动地设置于所述容纳空间111内，所述阀针130设有配合部131和调节部133；
所述螺杆组件140包括螺杆141和限位件143。所述螺杆141包括沿所述第一方向分布的杆部1411和筒部1413。所述杆部1411设有与所述内螺纹1211配合的外螺纹14111。所述筒部1413设置于所述杆部1411靠近所述出口115的一端，即如图所示的下端，所述筒部1413内设有螺杆腔14131。所述配合部131可活动地设置于所述螺杆腔14131内，所述调节部133位于所述螺杆腔14131外，所述限位件143的至少部分设置于所述螺杆腔14131内以限制所述配合部131沿远离所述杆部1411的方向脱出所述螺杆腔14131，使得所述阀针130可相对所述筒部1413转动和沿所述第一方向a活动。
同时参照图3，所述弹性组件150用于实现所述螺杆组件140与所述阀针130之间沿所述第一方向a的弹性配合。所述弹性组件150包括弹性件151和垫片153。所述弹性件151具有相背的第一端1511和第二端1512，所述弹性件151的第一端1511朝向远离所述杆部1411的方向抵压所述阀针130，所述垫片153设置于所述弹性件151的第二端1512与所述螺杆141之间。即所述弹性件151处于压缩状态，所述弹性件151的第一端1511对所述阀针130施加向下的作用力，所述弹性件151的第二端1512通过所述垫片153对所述螺杆141施加向上的作用力，使得所述阀针130具有相对于所述螺杆141向下移动的趋势。但由于所述限位件143对所述配合部131向下活动的限制，使得所述配合部131抵压所述筒部1413的下端。
所述驱动组件用于驱动所述螺杆141相对所述阀芯120转动。在所示实施例中，所述驱动组件包括磁转子161和电磁线圈(未示出)，所述磁转子161设置于所述容纳空间111内，并与所述杆部1411远离所述筒部1413的一端连接，使得所述电磁线圈通电时，所述磁转子161带动所述螺杆141转动，根据所述电磁线圈输入的电流方向不同，所述磁转子161相应地沿不同的方向旋转。应当理解的是，本申请对驱动组件不作限定，只能能够驱动螺杆相对阀芯转动即可。
通过所述螺杆141相对所述阀芯120转动，在所述内螺纹1211与所述外螺纹14111的配合下，所述螺杆141沿所述第一方向a移动，即如图所示向上或向下移动。当所述螺杆141向下移动时，所述螺杆141通过所述弹性件151推动所述阀针130向下移动；当所述螺杆141向上移动时，所述螺杆141通过所述限位件143带动所述阀针130向上移动。从而带动所述阀针130靠近或远离所述出口115，以通过所述调节部133调节所述出口115的流体流量。
在本申请中，所述垫片153与所述螺杆141抵接的一侧为弧面，减少了所述弹性组件150与所述螺杆141之间的接触面积，减少所述弹性组件150与所述螺杆141之间的转动摩擦力。当需要关闭所述出口时，在控制所述阀针移动到关闭位置后，为了保证密封效果，仍需控制所述螺杆141继续向下移动一段距离。此过程中，所述阀针130与所述出口115的内壁止抵，所述螺杆141旋转并向下压缩所述弹性件150，所述配合部131与所述筒部1413的底端间隔开，且所述垫片153的弧面结构可以减少所述弹性组件150与所述螺杆141之间的转动摩擦力，进而有效减少所述阀针130相对所述出口115的转动而造成的磨损，提升了所述控制阀100的使用寿命。
在本实施例中，所述弹性件150设置于所述螺杆腔14131外并位于所述筒部1413远离所述杆部1411的一侧，所述所述垫片153设置于所述筒部1413远离所述杆部1411的一端与所述弹性件150之间，所述弹性件150的第一端1511沿所述第一方向a与所述阀针抵接，使得所述弹性件150压缩于所述螺杆141与所述阀针130之间，实现所述螺杆组件140与所述阀针130之间沿所述第一方向a的弹性配合。应当理解的是，“所述弹性件150设置于所述螺杆腔14131外”仅作为本申请的一种实施方式，在其他实施例中，弹性件也可以设置于螺杆腔内，所述弹性件设置于阀针的配合部的顶端与筒部的底壁之间，所述弹性件的第一端沿着所述第一方向a向下抵压所述阀针的配合部，所述弹性件的第二端沿着所述第一方向a向上抵压所述筒部的底壁(即所述筒部1413靠近所述杆部1411的壁)，亦可实现螺杆组件与所述阀针之间沿所述第一方向a的弹性配合。本申请对弹性件是否位于螺杆腔内不作限定，只要能够实现“螺杆组件与所述阀针之间沿所述第一方向a的弹性配合”即可。
在本实施例中，所述弹性件150为弹簧，所述弹簧位于所述螺杆腔14131外并套设于所述阀针130上，所述垫片153呈环状，也套设于所述阀针130上。所述阀针130设有凸台135，所述凸台位于所述配合部131和所述调节部133之间，所述凸台135由所述阀针130的侧壁沿垂直于所述第一方向a的方向凸出，形成有供所述弹簧抵接的台阶面1351。所述弹性件151的第一端1511抵压所述台阶面，所述弹性件151的第二端1512通过所述垫片153抵压所述筒部1413的下端，从而实现所述螺杆组件140与所述阀针130之间沿所述第一方向a的弹性配合。“所述弹性件150为套设于所述阀针130上的弹簧，所述垫片153为套设于所述阀针130上的环状件”方便所述弹性组件150的定位，有利于发挥弹性功效，但这仅作为本申请的一种实施方式，本申请对此不作限定，只要弹性组件能够实现螺杆组件与所述阀针之间沿所述第一方向a的弹性配合即可。
在本实施例中，所述阀针130在所述配合部131和所述调节部133之间设置所述凸台135，通过所述凸台135与所述弹性件151的第一端1511抵接，且所述凸台135具有与所 述外壳110配合的导向面1353，所述导向面1353与所述外壳110的内壁面沿所述第一方向a导向配合，使得所述凸台135即发挥抵接所述弹性件151的作用外，还使得所述阀针130与所述外壳110精准定位，有利于对准所述出口115，有效保证所述阀针130与所述出口115的配合，提升所述控制阀100的流体流量控制精度。应当理解的是，“通过在所述阀针130上设置所述凸台135以与所述弹性件151的第一端1511抵接”仅作为本申请的一种实施方式，在其他实施例中，可以不设置凸台，弹性件的第一端通过焊接等方式固定于阀针上，本申请对于弹性件如何实现抵压阀针不作限定。
在本实施例中，所述弹性件150为弹簧，所述弹簧位于所述螺杆腔14131外并套设于所述阀针130上，所述垫片153呈环状，也套设于所述阀针130上。所述阀针130设有凸台135，所述凸台位于所述配合部131和所述调节部133之间，所述凸台135由所述阀针130的侧壁沿垂直于所述第一方向a的方向凸出，形成有供所述弹簧抵接的台阶面1351。所述弹性件151的第一端1511抵压所述台阶面，所述弹性件151的第二端1512通过所述垫片153抵压所述筒部1413的下端，从而实现所述螺杆组件140与所述阀针130之间沿所述第一方向a的弹性配合。所述阀针130设有导向部137，所述导向部137设置于所述配合部131与所述凸台135之间，所述导向部137的径向尺寸与所述弹簧的径向尺寸相适配，所述弹簧套设于所述导向部137上，所述弹簧与所述导向部137沿所述第一方向a导向配合，使得所述弹簧保持与所述导向部137同轴，在运动过程中不会偏移，提升了所述弹簧与所述螺杆141、所述阀针130的弹性配合精度。
所述导向部137和所述筒部1413均呈圆柱状，所述导向部137与所述筒部1413相适配，所述导向部137的至少部分位于所述螺杆腔14131内，使得所述导向部137与所述筒部1413沿所述第一方向a导向配合，且所述导向部137可相对于筒部1413转动。
在本实施例中，所述垫片153与所述弹性件151接触的一侧为平面。
在本实施例中，所述垫片153为聚甲醛树脂注塑件，其具有自润滑性能，减小所述螺杆141与所述弹性组件150之间的转动摩擦力，减少所述阀针130相对所述出口115的转动而造成的磨损，提升了所述控制阀100的使用寿命。
在本实施例中，所述筒部1413包括底壁14133和侧壁14135，所述底壁14133与所述杆部1411连接，所述侧壁14135由所述底壁14133沿所述第一方向a延伸。在所述筒部1413背离所述底壁14133的一端，所述侧壁14135形成开口(未标号)，所述阀针130穿过所述开口。所述限位件143沿第二方向b穿过所述侧壁14135，所述第二方向b与所述第一方向a正交，使得所述限位件143至少部分位于所述螺杆腔14131内，所述限位件143对所述配合部131沿所述第一方向a向下的移动形成阻挡，所述配合部131可活动地设置于所述限位件143与所述底壁14133之间。所述阀针130设有连接部139，所述连接部139位于所述 配合部131与所述调节部133之间。如图2所示，所述配合部131、所述连接部139、所述导向部137、凸台135、所述调节部133沿所述第一方向a排布，所述连接部139、所述导向部137、凸台135、所述调节部133从上之下依次连接，所述连接部139的径向尺寸小于所述配合部131，并且所述连接部139可由所述限位件143与所述侧壁14135之间穿过，使得所述配合部131与所述调节部133一体活动。当所述螺杆141带动所述阀针130向上移动时，所述限位件143与所述配合部131抵接；当所述阀针130抵接所述出口115的边缘后，所述螺杆141继续向下移动，使得所述配合部131与所述限位部143分离。
应当理解的是，所述限位件143沿第二方向b穿过所述侧壁14135，使得所述限位件143至少部分位于所述螺杆腔14131内，所述限位件143对所述配合部131沿所述第一方向a向下的移动形成阻挡，便于安装所述限位件143，但本申请对此不作限定，只要设置能够阻挡所述配合部131向下脱出所述螺杆腔14131的限位件即可，例如，在所述筒部1413背离所述底壁14133的一端设置螺杆盖，以对所述开口形成部分遮盖，亦可阻挡所述配合部131向下脱出所述螺杆腔14131。
在本实施例中，所述侧壁14135开设有安装口141351，所述限位件143包括安装部1431和两个限位部1433，所述安装部1431与两个限位部1433形成U型结构，所述安装部1431与所述安装口141351配合固定，所述限位部1433的一端与所述安装部1431连接，所述限位部1433的另一端延伸至所述螺杆腔14131内以防止所述配合部131脱出所述螺杆腔14131，所述阀针130的连接部139由两个限位部1433之间穿过。两个限位部1433之间的间距与所述连接部139的径向尺寸相适配，既能够供所述连接部139在所述两个限位部1433之间移动，又能对所述连接部139进行定位。
应当理解的是，所述限位件143包括两个限位部1433，这仅作为本申请的一种实施方式，本申请对限位部1433的设置数量不作限定，例如，所述限位件143包括安装部1431和一个限位部1433，所述安装部1431与所述安装口141351配合固定，所述限位部1433的一端与所述安装部1431连接，所述限位部1433的另一端延伸至所述螺杆腔14131内以防止所述配合部131脱出所述螺杆腔14131。只要所述限位件143包括至少一个限位部1433，能够防止所述配合部131脱出所述螺杆腔14131即可。
在本实施例中，所述筒部1413和所述配合部131均呈圆柱状，所述配合部131的侧面与所述筒部1413的侧壁14135导向配合，使得所述配合部131可沿所述筒部1413的侧壁14135转动、在所述第一方向a上活动。通过所述配合部131与所述筒部1413沿所述第一方向a的导向配合、所述导向部137与所述筒部1413沿所述第一方向a的导向配合、所述凸台135与所述外壳110沿所述第一方向a的导向配合，能够有效保证所述螺杆组件140、所述阀针141、所述出口115的同轴度，提升所述控制阀100整体的装配精度。
综上所述，本申请提出一种控制阀100，其包括外壳110、阀芯120、阀针130、螺杆组件140、弹性组件150以及驱动组件，所述外壳110限定容纳空间111，所述阀芯130固定于所述容纳空间111内，所述螺杆组件140与所述阀芯120转动连接，所述螺杆组件140包括螺杆141和限位件143，所述螺杆141设有螺杆腔14131，所述阀针130的配合部131活动设置于所述螺杆腔14131内，通过设置于所述螺杆组件140与所述阀针130之间的弹性组件150实现二者的弹性配合，且所述弹性组件150包括弹性件151及设置于所述弹性件151与所述螺杆组件140之间的垫片153，当所述驱动组件驱动所述螺杆141转动时，所述螺杆141沿第一方向a移动，并带动所述阀针130靠近或远离出口115，所述弹性组件150能够减少所述阀针130随所述螺杆141的转动。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (12)

  1. 一种控制阀，其中，包括：
    外壳，所述外壳内设有容纳空间，所述外壳设有与所述容纳空间连通的进口和出口；
    阀芯，所述阀芯固定设置于所述容纳空间内，所述阀芯上设有沿第一方向贯穿的贯穿孔，所述贯穿孔的内壁的至少部分设有内螺纹；
    阀针，所述阀针可活动地设置于所述容纳空间内，所述阀针设有配合部和调节部；
    螺杆组件，所述螺杆组件包括螺杆和限位件，所述螺杆包括沿所述第一方向分布的杆部和筒部，所述杆部设有与所述内螺纹配合的外螺纹，所述筒部设置于所述杆部靠近所述出口的一端，所述筒部内设有螺杆腔，所述配合部可活动地设置于所述螺杆腔内，所述调节部位于所述螺杆腔外，所述限位件的至少部分设置于所述螺杆腔内以限制所述配合部沿远离所述杆部的方向脱出所述螺杆腔，使得所述阀针可相对所述筒部转动和沿所述第一方向活动；
    弹性组件，用于实现所述螺杆组件与所述阀针之间沿所述第一方向的弹性配合，所述弹性组件包括弹性件和垫片，所述弹性件具有相背的第一端和第二端，所述弹性件的第一端朝向远离所述杆部的方向抵压所述阀针，所述垫片设置于所述弹性件的第二端与所述螺杆之间，所述垫片与所述螺杆抵接的一侧为弧面；
    驱动组件，用于驱动所述螺杆相对所述阀芯转动，使得所述螺杆沿所述第一方向移动，并带动所述阀针靠近或远离所述出口，以通过所述调节部调节所述出口的流体流量。
  2. 如权利要求1所述的控制阀，其中，所述弹性件设置于所述筒部远离所述杆部的一侧，所述垫片设置于所述筒部远离所述杆部的一端与所述弹性件之间。
  3. 如权利要求2所述的控制阀，其中，所述弹性件为套设于所述阀针上的弹簧，所述阀针设有凸台，所述弹性件的第二端沿所述第一方向与所述凸台抵接。
  4. 如权利要求3所述的控制阀，其中，所述凸台与所述外壳沿所述第一方向导向配合。
  5. 如权利要求3或4所述的控制阀，其中，所述阀针设有导向部，所述导向部设置于所述配合部与所述凸台之间，所述弹性件套设于所述导向部上，所述弹性件与所述导向部沿所述第一方向导向配合。
  6. 如权利要求5所述的控制阀，其中，所述导向部和所述筒部均呈圆柱状，所述导向部的至少部分位于所述螺杆腔内并与所述筒部沿所述第一方向导向配合。
  7. 如权利要求1-6中任一项所述的控制阀，其中，所述垫片呈环状，所述垫片套设于所述阀针上。
  8. 如权利要求1-7中任一项所述的控制阀，其中，所述垫片与所述弹性件接触的一侧为 平面。
  9. 如权利要求1-8中任一项所述的控制阀，其中，所述垫片为聚甲醛树脂注塑件。
  10. 如权利要求1-9中任一项所述的控制阀，其中，所述筒部包括底壁和侧壁，所述底壁与所述杆部连接，所述侧壁由所述底壁沿所述第一方向延伸，所述限位件沿第二方向穿过所述侧壁，所述第二方向与所述第一方向正交，使得所述限位件至少部分位于所述螺杆腔内，所述配合部可活动地设置于所述限位件与所述底壁之间。
  11. 如权利要求10所述的控制阀，其中，所述侧壁开设有安装口，所述限位件包括安装部和至少一个限位部，所述安装部与所述安装口配合固定，所述限位部的一端与所述安装部连接，所述限位部的另一端延伸至所述螺杆腔内以防止所述配合部脱出所述螺杆腔。
  12. 如权利要求10或11所述的控制阀，其中，所述筒部和所述配合部均呈圆柱状，所述配合部的侧面与所述筒部的侧壁导向配合，使得所述配合部可沿所述筒部的侧壁转动、在所述第一方向上活动。
PCT/CN2023/123438 2022-11-30 2023-10-08 控制阀 Ceased WO2024114104A1 (zh)

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