WO2022257706A1 - 流量调节阀 - Google Patents

流量调节阀 Download PDF

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Publication number
WO2022257706A1
WO2022257706A1 PCT/CN2022/093107 CN2022093107W WO2022257706A1 WO 2022257706 A1 WO2022257706 A1 WO 2022257706A1 CN 2022093107 W CN2022093107 W CN 2022093107W WO 2022257706 A1 WO2022257706 A1 WO 2022257706A1
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WO
WIPO (PCT)
Prior art keywords
valve
flow regulating
flow
valve port
sealing surface
Prior art date
Application number
PCT/CN2022/093107
Other languages
English (en)
French (fr)
Inventor
冯忠波
贺宇辰
Original Assignee
浙江盾安人工环境股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN202121318810.3U external-priority patent/CN215110536U/zh
Priority claimed from CN202110657214.6A external-priority patent/CN115467979A/zh
Application filed by 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Priority to JP2023565374A priority Critical patent/JP2024519684A/ja
Priority to KR1020237044116A priority patent/KR20240012496A/ko
Priority to DE112022003017.8T priority patent/DE112022003017T5/de
Publication of WO2022257706A1 publication Critical patent/WO2022257706A1/zh

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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
    • 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
    • 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
    • F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
    • 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

Definitions

  • the present application relates to the technical field of flow regulating valves, in particular, to a flow regulating valve.
  • the flow area of the valve head can be changed by changing the relative position of the valve head to the flow regulating surface on the inner wall of the valve port, so as to realize the flow regulation.
  • the flow characteristic curve is the relationship between the flow of the flow regulating valve and the opening of the valve port (that is, the moving distance of the valve head). In actual use, different systems and operating conditions have different requirements for flow regulation.
  • the angle of the flow adjustment surface relative to the axis of the valve port is set relatively small, and the flow adjustment surface is used as both the adjustment surface and the matching surface for closing the valve port.
  • the valve head and the flow regulating surface are prone to jamming, affecting normal use.
  • the present application provides a flow regulating valve, which can avoid the valve head from being stuck and ensure the use effect while realizing small flow regulation.
  • the present application provides a flow regulating valve, including: a valve body, the valve body has a valve port, the inner wall of the valve port has a sealing surface and a first flow regulating surface, the sealing surface and the The included angle between the axes of the valve ports is c, and the included angle between the first flow regulating surface and the axes of the valve ports is b, wherein, c>b, 5° ⁇ c ⁇ 85°, 0 ⁇ b ⁇ 20°; the valve head is movably arranged in the valve body to close or open the valve port, wherein, when the valve port is closed, the valve head and the sealing surface catch.
  • the minimum gap between the first flow regulating surface and the valve head is L, and L ⁇ 0.01mm.
  • the inner wall of the valve port also has a second flow regulating surface, the second flow regulating surface is located on the side of the first flow regulating surface away from the sealing surface, the second flow regulating surface and
  • the included angle between the axes of the valve ports is a, where 0 ⁇ a ⁇ 90°.
  • sealing surface, the first flow regulating surface and the second flow regulating surface are all tapered surfaces.
  • the sealing surface is a conical surface
  • the first flow regulating surface is a curved surface of revolution
  • the included angle between the generatrix of the curved surface of revolution and the axis of the valve port is b.
  • valve body includes a seat body and a core body, the core body is detachably arranged in the seat body, and the core body has the valve port.
  • a flow regulating valve includes a valve body and a valve head, the valve body has a valve port, the inner wall of the valve port has a sealing surface and a first flow regulating surface, the sealing surface and the valve port
  • the included angle between the axes of the valve is c
  • the included angle between the first flow regulating surface and the axis of the valve port is b, where, c>b, 5° ⁇ c ⁇ 85°, 0 ⁇ b ⁇ 20°
  • the valve The head is movably arranged in the valve body to close or open the valve port, wherein when the valve port is closed, the valve head abuts against the sealing surface.
  • the small flow can be adjusted by adjusting the relative position of the valve head and the first flow regulating surface, and when the valve port is closed, the sealing surface and the first flow regulating surface can be adjusted.
  • the fit of the valve head achieves port closure rather than closure by the flow regulating face. That is to say, in this application, the flow regulating surface and the sealing surface are provided separately. Compared with the prior art, it avoids the situation that the valve head is easily stuck when adjusting a small flow value, and ensures the use effect of the flow regulating valve.
  • FIG. 1 shows a cross-sectional view of a flow regulating valve provided in Embodiment 1 of the present application
  • Figure 2 shows an enlarged view of the flow regulating valve in Figure 1 at the valve port position
  • FIG. 3 shows an enlarged view of the flow regulating valve at the valve port position provided by Embodiment 2 of the present application;
  • FIG. 4 shows an enlarged view of the valve port position of the flow regulating valve provided by Embodiment 3 of the present application
  • FIG. 5 shows an enlarged view of the flow regulating valve at the valve port position provided by Embodiment 4 of the present application
  • FIG. 6 shows an enlarged view of the flow regulating valve at the valve port position provided by Embodiment 5 of the present application
  • FIG. 7 shows an enlarged view of the flow regulating valve provided by Embodiment 6 of the present application at the valve port position
  • Fig. 8 shows a cross-sectional view of the flow regulating valve provided by Embodiment 7 of the present application.
  • FIG. 9 shows a schematic diagram of the flow characteristic curve of the flow regulating valve provided in Embodiment 4 of the present application.
  • Valve body 11. Valve port; 12. Sealing surface; 13. First flow regulating surface; 14. Second flow regulating surface; 15. Seat body; 16. Core body; 20. Valve head.
  • the embodiment of the present application provides a flow regulating valve, including: a valve body 10, the valve body 10 has a valve port 11, the inner wall of the valve port 11 has a sealing surface 12 and a first flow regulating valve
  • the angle between the surface 13, the sealing surface 12 and the axis of the valve port 11 is c, and the angle between the first flow regulating surface 13 and the axis of the valve port 11 is b, where c>b, 5° ⁇ c ⁇ 85°, 0 ⁇ b ⁇ 20°
  • the valve head 20 is movably arranged in the valve body 10 to close or open the valve port 11, wherein, when the valve port 11 is closed, the valve head 20 and the sealing surface 12 abutments.
  • the small flow can be adjusted by adjusting the relative position of the valve head 20 and the first flow regulating surface 13, and the When the valve port 11 is closed, the valve port 11 is closed by the cooperation of the sealing surface 12 and the valve head 20, rather than by the flow regulating surface.
  • the area of the minimum opening of the sealing surface 12 is smaller than the area of the minimum opening of the first flow regulating surface 13, so that the valve head 20 is easy to contact with the sealing surface 12 during the movement. Sealing, and will not completely contact with the first flow regulating surface 13 and get stuck.
  • the flow regulating surface and the sealing surface are set separately, the sealing surface 12 is used for sealing, and the first flow regulating surface 13 is used for regulating the flow.
  • the valve The head 20 is prone to jamming, which ensures the use effect of the flow regulating valve.
  • the flow regulating valve can be used as a valve such as an electronic expansion valve.
  • a valve such as an electronic expansion valve.
  • the flow rate in the front section of the flow regulating valve is extremely small and the flow rate in the back section is extremely large.
  • the front section of the flow regulating valve can be used as an electronic expansion valve, and the rear section can be fully opened as a solenoid valve, so that the parallel electronic expansion valve and solenoid valve used in the prior art can be combined together, that is One valve in the present application can replace two valves in the prior art, which reduces the cost.
  • the flow regulating valve in this application can also be used on low ambient temperature units.
  • the typical flow characteristic requirement of low ambient temperature units is a broken line type, that is, it is used for low-temperature heating in the front stage, and requires precise adjustment of the flow rate, which can better stabilize the working conditions.
  • the flow value is large, and a larger flow characteristic is required. Therefore, the flow regulating valve provided by this solution can realize specific flow regulation to meet the usage requirements.
  • the minimum value of the included angle c between the sealing surface 12 and the axis of the valve port 11 is set to 5°, which can better realize the sealing performance.
  • the maximum value of the angle c between the sealing surface 12 and the axis of the valve port 11 is set to 85°, which can effectively reduce the length of the flow section at the sealing surface 12 and reduce the flow rate between the sealing surface 12 and the first flow regulating surface 13. Impact.
  • the included angle b between the first flow regulating surface 13 and the axis of the valve port 11 can be set to 0 degrees, so that there is flow when the flow regulating valve is fully closed, and the flow value at the fully closed position with flow is more accurate. Stablize.
  • b is greater than 20°
  • the included angle between the first flow regulating surface 13 and the valve head 20 is already relatively large, and defects such as jamming are not easy to occur, and the function of the sealing surface 12 is reduced at this time. Therefore, in this solution, it is reasonable to set the angle between the first flow regulating surface 13 and the axis of the valve port 11 to be 0 ⁇ b ⁇ 20°.
  • the minimum gap between the first flow regulating surface 13 and the valve head 20 is L, and L ⁇ 0.01mm.
  • L can be set to be less than or equal to 1 mm. Specifically, L ⁇ 0.1mm.
  • the inner wall of the valve port 11 also has a second flow regulating surface 14, the second flow regulating surface 14 is located on the side of the first flow regulating surface 13 away from the sealing surface 12, the second flow regulating surface 14 and the valve
  • the angle between the axes of the ports 11 is a, where 0 ⁇ a ⁇ 90°.
  • the angle b of the first flow regulating surface 13 and the angle a of the second flow regulating surface 14 can be set to different angle ranges according to different usage requirements, and the relationship between them can be defined.
  • b 0, 0 ⁇ a ⁇ 90°.
  • FIG. 9 it is a schematic diagram of the flow characteristic curve of the flow regulating valve. It can be seen from the figure that the flow characteristic curve is a broken line, and there is no flow when the valve head 20 is in contact with the sealing surface 12 (there is a certain flow when the valve head 20 just leaves the sealing surface 12 and reaches the first flow regulating surface 13, the flow rate It is very small, it does not belong to the adjustment function, it is a certain flow rate that exists objectively), the stage where the valve head 20 cooperates with the first flow regulating surface 13 is the front section, and the slope of the front section is small, which can realize precise flow adjustment, and the valve head 20 and the second flow adjustment surface The stage where the surface 14 cooperates is the rear section, and the slope of the rear section is large, which can realize large flow.
  • the sealing surface 12, the first flow regulating surface 13 and the second flow regulating surface 14 are all tapered surfaces. This facilitates processing and allows precise adjustment of the flow rate. Moreover, the edges of the sealing surface 12 , the first flow regulating surface 13 and the second flow regulating surface 14 are sequentially connected, so that a smooth transition can be achieved during flow regulation.
  • the sealing surface 12 is a conical surface
  • the first flow regulating surface 13 is a curved surface of revolution
  • the angle between the generatrix of the curved surface of revolution and the axis of the valve port 11 is b.
  • the valve body 10 includes a seat body 15 and a core body 16 , the core body 16 is detachably arranged in the seat body 15 , and the core body 16 has a valve port 11 . That is, the core body 16 provided with the valve port 11 in this solution can be disassembled, so that the core body 16 with different valve ports 11 can be replaced separately for different flow characteristic requirements. This greatly improves the scope of application of the flow regulating valve, and when the design is changed again, it is not necessary to replace all parts, only the valve port 11 needs to be redesigned, which improves the versatility of the parts and reduces the design and manufacturing costs.
  • the seat body 15 has a first limiting step
  • the core body 16 has a second limiting step
  • the first limiting step and the second limiting step are limitedly matched, which facilitates positioning and assembly.
  • the flow regulating valve also includes: a guide sleeve, which is arranged in the valve body 10, and the valve head 20 is movably arranged in the guide sleeve, and a sealing structure is arranged between the valve head 20 and the guide sleeve; the driving part, the driving part and the valve head 20 Drive connection to drive the valve head 20 to move.
  • the flow regulating valve is an electronic expansion valve.
  • the small flow can be adjusted by adjusting the relative position of the valve head 20 and the first flow regulating surface 13, and in When closing the valve port 11, the valve port 11 is closed through the cooperation of the sealing surface 12 and the valve head 20, rather than through the flow regulating surface. That is to say, in this application, the flow regulating surface and the sealing surface are set separately, compared with the prior art, it avoids the situation that the valve head 20 is likely to be stuck when adjusting a small flow value, and ensures the use effect of the electronic expansion valve.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

一种流量调节阀被公开。该流量调节阀包括阀体（10）和阀头（20），阀体具有阀口（11），阀口的内壁具有密封面（12）和第一流量调节面（13），密封面和阀口的轴线之间的夹角为c，第一流量调节面和阀口的轴线之间的夹角为b，其中，c＞b，5°≤c≤85°，0≤b≤20°；阀头可移动地设置在阀体内，以关闭或打开阀口，其中，阀口在关闭的情况下，阀头和密封面抵接。该流量调节阀可通过调整阀头和第一流量调节面的相对位置进行小流量调节，并且在关闭阀口时通过密封面和阀头的配合实现阀口关闭，而不是通过流量调节面关闭。该流量调节阀将流量调节的面和密封的面单独设置，与现有技术相比，避免了调节小流量值时，阀头容易出现卡死的情况，保证了使用效果。

Description

流量调节阀 技术领域
本申请涉及流量调节阀技术领域，具体而言，涉及一种流量调节阀。
背景技术
流量调节阀中，阀头通过改变与阀口内壁的流量调节面的相对位置实现流通面积变化，从而实现流量调节。流量特性曲线是流量调节阀的流量和阀口开度(也即阀头的移动距离)的关系。在实际使用过程中，不同系统、使用工况，对流量调节的要求不同。
现有技术中，为了满足小流量调节，将流量调节面相对于阀口轴线的角度设置的比较小，并且流量调节面既作为调节面又作为关闭阀口的配合面，当需要调节为极小流量值时，阀头和流量调节面容易出现卡死的情况，影响正常使用。
发明内容
本申请提供了一种流量调节阀，以在实现小流量调节的同时，避免阀头卡死，保证使用效果。
为了实现上述目的，本申请提供了一种流量调节阀，包括：阀体，所述阀体具有阀口，所述阀口的内壁具有密封面和第一流量调节面，所述密封面和所述阀口的轴线之间的夹角为c，所述第一流量调节面和所述阀口的轴线之间的夹角为b，其中，c＞b，5°≤c≤85°，0≤b≤20°；阀头，可移动地设置在所述阀体内，以关闭或打开所述阀口，其中，所述阀口在关闭的情况下，所述阀头和所述密封面抵接。
进一步地，所述第一流量调节面和所述阀头之间的最小间隙为L，L≥0.01mm。
进一步地，所述阀口的内壁还具有第二流量调节面，所述第二流量调节面位于所述第一流量调节面的远离所述密封面的一侧，所述第二流量调节面和所述阀口的轴线之间的夹角为a，0≤a＜90°。
进一步地，b＝0，0<a<90°。
或者，0<b≤20°，a＝0。
或者，0<b≤20°，b<a<90°。
或者，0<b≤20°，0<a<b。
进一步地，所述密封面、所述第一流量调节面和所述第二流量调节面均为锥形面。
进一步地，所述密封面为锥形面，所述第一流量调节面为旋转曲面，所述旋转曲面的母线和所述阀口的轴线之间的夹角为b。
进一步地，所述阀体包括座体和芯体，所述芯体可拆卸地设置在所述座体内，所述芯体具有所述阀口。
进一步地，30°≤c≤60°。
应用本申请的技术方案，提供了一种流量调节阀，流量调节阀包括阀体和阀头，阀体具有阀口，阀口的内壁具有密封面和第一流量调节面，密封面和阀口的轴线之间的夹角为c，第一流量调节面和阀口的轴线之间的夹角为b，其中，c＞b，5°≤c≤85°，0≤b≤20°；阀头可移动地设置在阀体内，以关闭或打开阀口，其中，阀口在关闭的情况下，阀头和密封面抵接。采用该方案，通过设置密封面和第一流量调节面，并限定角度范围，这样可通过调整阀头和第一流量调节面的相对位置进行小流量调节，并且在关闭阀口时通过密封面和阀头的配合实现阀口关闭，而不是通过流量调节面关闭。即本申请中将流量调节的面和密封的面单独设置，与现有技术相比，避免了调节小流量值时，阀头容易出现卡死的情况，保证了流量调节阀的使用效果。
附图说明
构成本申请的一部分的说明书附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1示出了本申请的实施例一提供的流量调节阀的剖视图；
图2示出了图1中的流量调节阀在阀口位置的放大图；
图3示出了本申请的实施例二提供的流量调节阀在阀口位置的放大图；
图4示出了本申请的实施例三提供的流量调节阀在阀口位置的放大图；
图5示出了本申请的实施例四提供的流量调节阀在阀口位置的放大图；
图6示出了本申请的实施例五提供的流量调节阀在阀口位置的放大图；
图7示出了本申请的实施例六提供的流量调节阀在阀口位置的放大图；
图8示出了本申请的实施例七提供的流量调节阀的剖视图；
图9示出了本申请的实施例四提供的流量调节阀的流量特性曲线示意图。
其中，上述附图包括以下附图标记：
10、阀体；11、阀口；12、密封面；13、第一流量调节面；14、第二流量调节面；15、座体；16、芯体；20、阀头。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本申请及其应用或使用的任何限制。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
如图1至图2所示，本申请的实施例提供了一种流量调节阀，包括：阀体10，阀体10具有阀口11，阀口11的内壁具有密封面12和第一流量调节面13，密封面12和阀口11的轴线之间的夹角为c，第一流量调节面13和阀口11的轴线之间的夹角为b，其中，c＞b，5°≤c≤85°，0≤b≤20°；阀头20，可移动地设置在阀体10内，以关闭或打开阀口11，其中，阀口11在关闭的情况下，阀头20和密封面12抵接。
采用该方案，通过设置密封面12和第一流量调节面13，并限定角度范围和角度关系，这样可通过调整阀头20和第一流量调节面13的相对位置进行小流量调节，并且在关闭阀口11时通过密封面12和阀头20的配合实现阀口11关闭，而不是通过流量调节面关闭。在本申请中，由于c＞b，密封面12的开口最小处的面积小于第一流量调节面13的开口最小处的面积，这样阀头20在移动的过程中，容易与密封面12接触进行密封，而不会与第一流量调节面13完全接触并卡死。即本申请中将流量调节的面和密封的面分开设置，密封面12用来密封，第一流量调节面13用来调节流量，与现有技术相比，避免了调节小流量值时，阀头20容易出现卡死的情况，保证了流量调节阀的使用效果。
流量调节阀具体可以作为电子膨胀阀等阀。在一些使用场景中，希望流量调节阀前段流量极小，后段流量极大。采用本申请中的方案，流量调节阀前段可当电子膨胀阀使用，后段全开做电磁阀用，这样可以把现有技术中采用的并联用的电子膨胀阀和电磁阀合在一起，即本申请中的一个阀可以代替现有技术中的两个阀，降低了成本。或者，本申请中的流量调节阀还可用在低环温机组上，低环温机组典型的流量特性要求就是折线型，即前段低温制热用，要求流量精密调节，这样可以更好稳定工况，后段制冷用，流量值较大，需要更大流量特性。因此，本方案提供的流量调节阀可实现特定的流量调节，满足使用需求。
其中，密封面12和阀口11的轴线之间的夹角c的最小值设置为5°，这样可更好地实现密封性能。密封面12和阀口11的轴线之间的夹角c的最大值设置为85°，这样可有效缩小密封面12处的流量段长度，减小密封面12对第一流量调节面13处流量的影响。
优选地，30°≤c≤60°。这样可在较好地起到密封效果的同时，实现较好的流量调节效果。
在本实施例中，第一流量调节面13和阀头20之间具有间隙，以避免阀头20卡死。其中，第一流量调节面13和阀口11的轴线之间的夹角b可以设置为0度，这样可实现流量调节阀全关的情况下有流量，使全关有流量处的流量值更稳定。当b大于20°时，第一流量调节面13 与阀头20的夹角本身已比较大，不易出现卡死等不良，此时密封面12的作用就降低了。因此，本方案中将第一流量调节面13和阀口11的轴线之间的夹角设置为0≤b≤20°比较合理。
进一步地，第一流量调节面13和阀头20之间的最小间隙为L，L≥0.01mm。通过此设置，可使得阀头20与第一流量调节面13配合进行流量调节时，保证阀头20和第一流量调节面13之间具有足够的间隙，从而避免卡死。其中，L可设置为小于等于1mm。具体地，L≥0.1mm。
在本实施例中，阀口11的内壁还具有第二流量调节面14，第二流量调节面14位于第一流量调节面13的远离密封面12的一侧，第二流量调节面14和阀口11的轴线之间的夹角为a，0≤a＜90°。通过设置第二流量调节面14，当阀头20从与第一流量调节面13配合的位置移动到与第二流量调节面14配合的位置时，流量特性曲线的斜率发生变化，即丰富了流量调节的功能，以满足不同的使用需求。例如，阀头20与第一流量调节面13配合时为小流量调节，阀头20与第二流量调节面14配合时为大流量调节。
在本申请中，第一流量调节面13的角度b和第二流量调节面14的角度a可根据不同的使用需求设置为不同的角度范围，并且可以限定两者的关系。
例如，如图3所示，在实施例二中，b＝0，0<a<90°。
如图4所示，在实施例三中，0<b≤20°，a＝0。
如图5所示，在实施例四中，0<b≤20°，b<a<90°。如图9所示，为该流量调节阀的流量特性曲线示意图。从图中可以看出，流量特性曲线为折线形，阀头20与密封面12接触时无流量(当阀头20刚离开密封面12达到第一流量调节面13前有一定的流量，这个流量极小，不属于调节作用，是客观存在的一定流量)，阀头20与第一流量调节面13配合的阶段为前段，前段斜率小，可实现流量精密调节，阀头20与第二流量调节面14配合的阶段为后段，后段斜率大，可实现大流量。
如图6所示，在实施例五中，0<b≤20°，0<a<b。
在上述实施例中，密封面12、第一流量调节面13和第二流量调节面14均为锥形面。这样便于加工，并且可进行流量的精确调节。并且，密封面12、第一流量调节面13和第二流量调节面14的边线依次连接，这样在流量调节时可平稳过渡。
如图7所示，在实施例六中，密封面12为锥形面，第一流量调节面13为旋转曲面，旋转曲面的母线和阀口11的轴线之间的夹角为b。采用该设置，阀头20在沿轴向移动时，由于第一流量调节面13为旋转曲面，这样可实现非线性调节，或者理解为变速率调节，以满足使用需求。
进一步地，在实施例七中，与上述实施例不同的是，阀体10包括座体15和芯体16，芯体16可拆卸地设置在座体15内，芯体16具有阀口11。即，本方案中设置有阀口11的芯体16可拆卸下来，这样对于不同的流量特性需求，可单独更换具有不同阀口11的芯体16。这样 大大提高了该流量调节阀的适应范围，并且再更改设计时无需所有部件全部更换，只需重新设计阀口11，提高了部件的通用性，降低了设计和制造成本。
可选地，座体15具有第一限位台阶，芯体16具有第二限位台阶，第一限位台阶和第二限位台阶限位配合，这样便于定位和装配。
流量调节阀还包括：导向套，设置在阀体10内，阀头20可移动地设置在导向套内，阀头20和导向套之间设置有密封结构；驱动部，驱动部和阀头20驱动连接，以驱动阀头20移动。
具体地，流量调节阀为电子膨胀阀。
在本申请中，通过设置密封面12和第一流量调节面13，并限定角度范围和角度关系，这样可通过调整阀头20和第一流量调节面13的相对位置进行小流量调节，并且在关闭阀口11时通过密封面12和阀头20的配合实现阀口11关闭，而不是通过流量调节面关闭。即本申请中将流量调节的面和密封的面分开设置，与现有技术相比，避免了调节小流量值时，阀头20容易出现卡死的情况，保证了电子膨胀阀的使用效果。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (11)

  1. 一种流量调节阀，其特征在于，包括：
    阀体(10)，所述阀体(10)具有阀口(11)，所述阀口(11)的内壁具有密封面(12)和第一流量调节面(13)，所述密封面(12)和所述阀口(11)的轴线之间的夹角为c，所述第一流量调节面(13)和所述阀口(11)的轴线之间的夹角为b，其中，c＞b，5°≤c≤85°，0≤b≤20°；
    阀头(20)，可移动地设置在所述阀体(10)内，以关闭或打开所述阀口(11)，其中，所述阀口(11)在关闭的情况下，所述阀头(20)和所述密封面(12)抵接。
  2. 根据权利要求1所述的流量调节阀，其特征在于，所述第一流量调节面(13)和所述阀头(20)之间的最小间隙为L，L≥0.01mm。
  3. 根据权利要求1所述的流量调节阀，其特征在于，所述阀口(11)的内壁还具有第二流量调节面(14)，所述第二流量调节面(14)位于所述第一流量调节面(13)的远离所述密封面(12)的一侧，所述第二流量调节面(14)和所述阀口(11)的轴线之间的夹角为a，0≤a＜90°。
  4. 根据权利要求3所述的流量调节阀，其特征在于，
    b＝0，0<a<90°。
  5. 根据权利要求3所述的流量调节阀，其特征在于，
    0<b≤20°，a＝0。
  6. 根据权利要求3所述的流量调节阀，其特征在于，
    0<b≤20°，b<a<90°。
  7. 根据权利要求3所述的流量调节阀，其特征在于，
    0<b≤20°，0<a<b。
  8. 根据权利要求3所述的流量调节阀，其特征在于，所述密封面(12)、所述第一流量调节面(13)和所述第二流量调节面(14)均为锥形面。
  9. 根据权利要求1所述的流量调节阀，其特征在于，所述密封面(12)为锥形面，所述第一流量调节面(13)为旋转曲面，所述旋转曲面的母线和所述阀口(11)的轴线之间的夹角为b。
  10. 根据权利要求1所述的流量调节阀，其特征在于，所述阀体(10)包括座体(15)和芯体(16)，所述芯体(16)可拆卸地设置在所述座体(15)内，所述芯体(16)具有所述阀口(11)。
  11. 根据权利要求1所述的流量调节阀，其特征在于，30°≤c≤60°。
PCT/CN2022/093107 2021-06-11 2022-05-16 流量调节阀 WO2022257706A1 (zh)

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