WO2022127350A1 - 截止阀及具有其的空调系统 - Google Patents

截止阀及具有其的空调系统 Download PDF

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Publication number
WO2022127350A1
WO2022127350A1 PCT/CN2021/124978 CN2021124978W WO2022127350A1 WO 2022127350 A1 WO2022127350 A1 WO 2022127350A1 CN 2021124978 W CN2021124978 W CN 2021124978W WO 2022127350 A1 WO2022127350 A1 WO 2022127350A1
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WO
WIPO (PCT)
Prior art keywords
valve
section
threaded
boss
bonnet
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PCT/CN2021/124978
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English (en)
French (fr)
Inventor
陈狄永
周峰
冯雄雄
楼峰
Original Assignee
浙江盾安人工环境股份有限公司
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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 EP21905279.2A priority Critical patent/EP4265947A4/en
Priority to JP2023509399A priority patent/JP7538945B2/ja
Publication of WO2022127350A1 publication Critical patent/WO2022127350A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
    • F16K1/04—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B45/00—Arrangements for charging or discharging refrigerant

Definitions

  • the present application relates to the technical field of air conditioning, and in particular, to a shut-off valve and an air conditioning system having the same.
  • the shut-off valve is an important part of the air conditioning system. It is installed on the refrigerant circuit of the air conditioner to close or open the refrigeration circuit, evacuate or charge the refrigerant.
  • the relevant globe valve includes valve body, valve core and bonnet and other components.
  • the valve core is placed in the valve body, and the bonnet cover is set on the valve body as a maintenance window for the globe valve.
  • the present application provides a shut-off valve that facilitates operations such as maintenance and inspection, and avoids potential safety hazards.
  • a globe valve comprises a valve body, a valve core and a valve cap, the valve body has a valve cavity with one end open, the valve core is arranged inside the valve cavity and can move in the valve cavity,
  • the valve cap is covered at the opening of the valve body and is threadedly connected to the valve body;
  • the shut-off valve further includes a threaded member, an operation hole is opened on the valve cap, and the threaded member can extend into the operation hole, and screw connection with the operation hole.
  • an operating hole is provided on the valve cap, so that the threaded member can extend into the operating hole and be threadedly connected with the operating hole, so that when the valve body needs to be threaded,
  • operations such as maintenance and inspection
  • maintenance and inspection of the internal components of the valve body are performed, so as to avoid the danger of the valve core flying out due to the failure of the limiting structure of the valve core.
  • a boss is provided on a side of the valve cap facing the valve body, the boss is extended toward the inside of the valve cavity, and the operation hole is opened in the boss , the boss can be limitedly matched with the valve core.
  • a limit ring is further provided in the valve cavity, and the limit ring is located at an end of the valve cavity away from the valve core, and an end of the boss away from the valve cap extends to the end of the valve cap.
  • the limit ring is located on the same plane as the limit ring; or, the limit ring is penetrated through the end of the boss away from the valve cap and extends along the valve cavity axis.
  • valve core can first resist the boss when being unscrewed, so as to realize the function of limit, not only further limit is achieved on the basis of the limit ring, but also The retaining ring is also protected from failure or damage.
  • the opening of the valve cavity has a constricted section, and the constricted section abuts against the valve cap.
  • the constricted section is used to play a third level limiting function on the valve core, and further The limit effect is enhanced to prevent the spool from flying out.
  • an abutting portion is provided on the inner side wall of the bonnet, the bonnet is clamped or screwed to the valve body, and the abutting portion can abut against the constriction the outer wall of the segment.
  • the threaded member includes a connecting section and a threaded section, one end of the threaded section is connected with the connecting section, and the other end can extend into the operating hole and be threadedly connected with the operating hole
  • the outer wall of the threaded segment close to one end of the connecting segment is provided with an annular protrusion, the annular protrusion can abut against the valve cap along with the installation of the threaded member, and is sealingly connected with the valve cap.
  • valve cap is provided with a chamfer at one end of the operating hole away from the valve core, and the annular protrusion abuts on the chamfer.
  • the chamfers are provided in an inverted cone shape.
  • the threaded member includes a connecting section and a threaded section, one end of the threaded section is connected with the connecting section, and the other end can extend into the operating hole and be threadedly connected with the operating hole ;
  • One end of the threaded section close to the connecting section is sleeved with a sealing member, and the sealing member is used to seal the gap between the connecting section and the valve cap.
  • An air conditioning system includes a shut-off valve.
  • an operating hole is provided on the valve cap, so that the threaded member can extend into the operating hole and be threadedly connected with the operating hole, so that when the need arises
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of a stop valve provided by the application;
  • FIG. 2 is a schematic structural diagram of Embodiment 2 of the shut-off valve provided by the application;
  • FIG. 3 is a schematic diagram of the reference structure of the use state of the globe valve provided by the present application.
  • valve body 100, globe valve; 10, valve body; 11, valve cavity; 111, limit ring; 112, inlet; 113, outlet; 114, valve port; 12, necking section; 20, valve core; 21, connecting hole; 22, valve stem; 30, bonnet; 31, operating hole; 32, boss; 33, abutting part; 34, chamfer; 40, threaded part; 41, connecting section; 42, threaded section; 43, annular convex 50. Seals.
  • a component when referred to as being “mounted on” another component, it can be directly on the other component or there may also be an intervening component.
  • a component When a component is considered to be “set on” another component, it may be directly set on the other component or there may be a co-existing centered component.
  • a component When a component is said to be “fixed” to another component, it may be directly fixed to the other component or there may also be an intervening component.
  • the present application provides a shut-off valve 100 , the shut-off valve 100 is arranged on the refrigerant circuit between the indoor unit and the outdoor unit of the air conditioning system, and is used to open or close the refrigerant circuit. Used for vacuuming or charging refrigerant during air conditioning maintenance.
  • the shut-off valve 100 can also be applied in fields other than air conditioning systems, such as fluid pipeline transportation, petrochemical industry, and aerospace fields.
  • the globe valve 100 includes a valve body 10 , a valve core 20 and a valve cap 30 .
  • the valve body 10 has a valve cavity 11 with one end open. Movement, the bonnet 30 is covered on the opening of the valve body 10 and is threadedly connected with the valve body 10; the globe valve 100 also includes a threaded member 40, the bonnet 30 is provided with an operating hole 31, and the threaded member 40 can extend into the operation inside the hole 31 and screwed with the operation hole 31 .
  • the bonnet of the relevant globe valve needs to be unscrewed when the air conditioner is repaired, and then the valve body needs to be operated.
  • This structure requires the bonnet to be disassembled. Therefore, in extreme cases, if the valve The failure of the limit ring or the constriction in the body will cause the valve core to fly out of the valve body, resulting in a personal safety hazard.
  • the screw 40 can be inserted into the operation hole 31 to be threadedly connected with the operation hole 31, so that when the valve body 10 needs to be repaired and inspected, operations such as When the valve is turned on, it is only necessary to disassemble the screw 40 from the operation hole 31, insert the valve stem 22 from the operation hole 31, and rotate the valve core 20 to detect, so that it is not necessary to disassemble the entire valve cap 30 and then adjust the valve Operations such as maintenance and inspection are carried out inside the body 10, so that the danger of the valve core 20 flying out due to the failure of the limiting structure of the valve core 20 can be prevented.
  • the valve body 10 is a main component of the valve. Different pressure levels have different mechanical manufacturing methods.
  • the valve body 10 is produced by a casting process.
  • the valve body 10 may also be produced by forging or other processes.
  • valve body 10 is made of metal, which is suitable for medium and low pressure and normal temperature conditions in water treatment, light industry, petroleum, chemical and other industries, and has good sealing performance.
  • a boss 32 is provided on the side of the valve cap 30 toward the valve body 10 , the boss 32 is extended toward the inside of the valve cavity 11 , and the operation hole 31 is opened on the boss 32 , and the boss 32 can be limited to the valve core 20 .
  • the boss 32 is opposite to the valve core. 20 acts as a limit.
  • the advantage of providing the boss 32 is also to facilitate the placement of the screw 40, so that the screw 40 and the bonnet 30 are more tightly connected.
  • the fit leads to an increase in the wall thickness of the valve cap 30, thereby increasing the material cost; of course, in other embodiments, the boss 32 may not be provided, which is not limited herein.
  • valve cavity 11 is also provided with a limit ring 111, and the limit ring 111 is located at the end of the valve cavity 11 away from the valve core 20.
  • the valve stem 22 is screwed into the operation hole 31 and unscrewed out of the valve core 20, the valve may be removed.
  • the core 20 is screwed out at the same time.
  • the limiting ring 111 is provided to prevent the valve core 20 from being screwed out under the driving of the valve stem 22 under this condition, so as to play a limiting role.
  • the end of the boss 32 away from the valve cap 30 extends to the limit ring 111 and is located on the same plane as the limit ring 111;
  • the ring 111 extends along the axis of the valve cavity 11, so that the valve core 20 can first resist the boss 32 when it is unscrewed, so as to achieve the function of limit, not only to achieve further limit on the basis of the limit ring 111,
  • the limiting ring 111 is also protected, so that it is not easy to fail or damage; of course, in other embodiments, the relative positions of the boss 32 and the limiting ring 111 can also be set in other settings, which are not limited here.
  • the opening of the valve body 10 has a constricted section 12 , the constricted section 12 abuts against the bonnet 30 , an abutting portion 33 is provided on the inner side wall of the bonnet 30 , and the bonnet 30 is clamped with the valve body 10 Or screw connection, and the abutting portion 33 can abut against the outer wall of the constricted section 12, on the basis of the double limit of the valve core 20 by the boss 32 and the limit ring 111, the constricted section 12 is used to the valve core 20. Played the role of the third layer limit, and further enhanced the limit effect.
  • the abutting portion 33 and the neck section 12 are in point contact sealing, that is, the second sealing is achieved on the basis of the threaded sealing between the bonnet 30 and the valve body 10, which enhances the sealing performance and reduces the leakage rate.
  • the threaded member 40 includes a connecting section 41 and a threaded section 42.
  • One end of the threaded section 42 is connected to the connecting section 41, and the other end can extend into the operating hole 31 and be threadedly connected with the operating hole 31; the threaded section 42 is close to the
  • An annular protrusion 43 is provided on the outer wall of one end of the connecting section 41.
  • the annular protrusion 43 can abut against the bonnet 30 with the installation of the threaded member 40, and is sealingly connected with the bonnet 30.
  • the annular protrusion 43 When the threaded member 40 is tightened, the annular protrusion 43 It can contact with the valve cap 30 and form a seal, which effectively improves the sealing performance and reduces the leakage rate.
  • the material of the annular protrusion 43 may be brass, steel or aluminum alloy, and the use of the annular protrusion 43 of metal material forms a hard seal between the threaded member 40 and the bonnet 30, enhancing the The high temperature resistance strength of the sealing parts increases the service life of the sealing parts.
  • annular protrusion 43 and the threaded member 40 are integrally formed; of course, in other embodiments, the annular protrusion 43 can also be connected to the threaded member 40 by welding, which is not limited herein.
  • valve cap 30 is provided with a chamfer 34 at one end of the operating hole 31 away from the valve core 20 , and the chamfer 34 is provided in an inverted cone shape, and the annular protrusion 43 abuts on the chamfer 34 .
  • the bump 43 abuts against the chamfer 34, a point contact seal is formed with each other, and the sealing effect is further enhanced by using the point contact seal.
  • the structure of the second embodiment is basically the same as the structure of the first embodiment, and the same parts can be referred to the description in the first embodiment, which will not be repeated here, and the differences are:
  • a sealing member 50 is sleeved at one end of the threaded section 42 close to the connecting section 41 , and the sealing member 50 is used to seal the gap between the connecting section 41 and the valve cap 30 .
  • the material of the sealing member 50 may be rubber or plastic, so that a soft seal is formed between the screw member 40 and the valve cap 30, and has the characteristics of simple structure, small size and light weight.
  • the valve core 20 is also provided with a connecting hole 21 , and the connecting hole 21 is an internal threaded hole, which is used to cooperate with the valve stem 22 , and the valve stem 22 drives the valve core 20 to be perpendicular to the center line of the valve body 10
  • the stop valve 100 unscrew the screw 40 from the operating hole 31, screw the valve stem 22 into the connecting hole 21 through the operating hole 31, turn the valve stem 22 clockwise, the valve body 10 is closed, and the internal Circulation of the medium; turn the valve stem 22 counterclockwise, the valve body 10 is opened, and the circulation of the internal medium is opened, which is convenient for the manipulation of the internal medium.
  • valve stem 22 can be selected as the external tool matched with the connection hole 21 .
  • the external tool can also be any tool that can be matched with the connection hole 21 and manipulated the valve core 20 .
  • valve body 10 is provided with an inlet 112 and an outlet 113 which are respectively communicated with the valve cavity 11.
  • the valve cavity 11 also has a valve port 114.
  • the valve core 20 is used to open/close the valve port 114 to open/block the inlet 112 and the valve. Circulation between outlets 113 .
  • the threaded member 40 may be an element such as a screw, a screw rod, or a bolt, which is not limited herein.
  • the present application also provides an air conditioning system (not shown in the figure), which includes a shut-off valve 100 .
  • the air conditioning system also has the advantages of the shut-off valve 100 described above.
  • the screw 40 is unscrewed from the operation hole 31, and then the valve stem 22 is inserted from the operation hole 31 and threaded with the connecting hole 21 of the valve core 20, and then the valve core 20 is screwed.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lift Valve (AREA)
  • Valve Housings (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Abstract

一种截止阀（100）及具有其的空调系统。截止阀（100）包括阀体（10）、阀芯（20）以及阀帽（30），阀帽（30）盖设于阀体（10）的敞口处，并与阀体（10）螺纹连接；截止阀（100）还包括螺纹件（40），阀帽（30）上开设有操作孔（31），螺纹件（40）能够伸入操作孔（31）内，并与操作孔（31）螺纹连接。

Description

截止阀及具有其的空调系统
相关申请
本申请要求2020年12月16日申请的，申请号为202023037035.2，发明名称为“截止阀及具有其的空调系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及空调技术领域，特别是涉及一种截止阀及具有其的空调系统。
背景技术
截止阀是空调系统的一个重要部件，安装于空调器的制冷剂回路上，用于关闭或开启制冷回路、抽真空或充注制冷剂。
相关截止阀包括阀体、阀芯以及阀帽等部件，阀芯置于阀体内，阀帽盖设于阀体上，作为截止阀维修窗口。当维修空调时，把阀帽从阀体上拧下来并对阀体内的部件，如阀芯等进行操作。因此，在极端情况下，如果阀体内止挡圈或者缩口(阀芯限位结构)失效，阀芯飞出阀体，从而造成人身安全隐患。
发明内容
有鉴于此，针对上述技术问题，本申请提供了一种便于进行维修检测等操作、避免发生安全隐患的截止阀。
为解决上述技术问题，本申请提供如下技术方案：
一种截止阀，包括阀体、阀芯以及阀帽，所述阀体内具有一端敞口设置的阀腔，所述阀芯设于所述阀腔内部，并能够在所述阀腔内运动，所述阀帽盖设于所述阀体的敞口处，并与所述阀体螺纹连接；所述截止阀还包括螺纹件，所述阀帽上开设有操作孔，所述螺纹件能够伸入所述操作孔内，并与所述操作孔螺纹连接。
可以理解的是，本申请通过在所述阀帽上开设有操作孔，使得所述螺纹件能够伸入所述操作孔内与所述操作孔螺纹连接，从而使得当需要对所述阀体内部进行维修检测等操作时，只需要将所述螺纹件从所述操作孔上拆卸下来，将阀杆从所述操作孔中插入，并将所述阀芯旋起检测，如此就不需要将整个所述阀帽拆卸下来再对所述阀体内部部件进行维修 检测等操作，这样可以杜绝所述阀芯因其限位结构失效而造成所述阀芯飞出的危险。
在其中一个实施例中，所述阀帽朝向所述阀体的一侧设有凸台，所述凸台朝向所述阀腔内部的方向延伸设置，且所述操作孔开设于所述凸台，所述凸台能够与所述阀芯限位配合。
可以理解的是，当将操作件从所述操作孔中插入并将所述阀芯旋起检测时，所述阀芯的端面可以被所述凸台抵挡，从而无法与所述阀体脱离，所述凸台对所述阀芯起到了限位的作用。
在其中一个实施例中，所述阀腔内还设有限位环，且所述限位环位于所述阀腔远离所述阀芯一端，所述凸台远离所述阀帽一端延伸至所述限位环，并与所述限位环位于同一平面；或者，所述凸台远离所述阀帽的一端穿设所述限位环，并沿所述阀腔轴线延伸。
可以理解的是，如此设置，可以使得所述阀芯在被旋出时先与所述凸台抵挡，从而实现限位的作用，不仅在所述限位环的基础上实现进一步限位，而且也保护了所述限位环，使其不易失效或损坏。
在其中一个实施例中，所述阀腔的敞口处具有缩口段，所述缩口段与所述阀帽相抵靠。
可以理解的是，在所述凸台和所述限位环对所述阀芯的双重限位的基础上，利用所述缩口段对所述阀芯起到第三层限位作用，进一步增强了限位效果，避免发生阀芯飞出的情况。
在其中一个实施例中，所述阀帽的内侧壁上设有抵靠部，所述阀帽与所述阀体卡接或者螺纹连接，且所述抵靠部能够抵靠于所述缩口段的外壁。
在其中一个实施例中，所述螺纹件包括连接段和螺纹段，所述螺纹段的一端与所述连接段连接，另一端能够伸入所述操作孔内，并与所述操作孔螺纹连接；所述螺纹段靠近所述连接段一端的外壁上具有环形凸起，所述环形凸起能够随所述螺纹件的安装抵靠于所述阀帽，并与所述阀帽密封连接。
可以理解的是，当拧紧所述螺纹件时时，所述环形凸起能够与所述阀帽接触并形成密封，有效地提高了密封性能，降低了泄漏率。
在其中一个实施例中，所述阀帽在所述操作孔远离所述阀芯的一端处设有倒角，所述环形凸起抵靠于所述倒角上。
可以理解的是，当所述环形凸起与所述倒角相抵靠时则形成了点接触密封，利用点接触密封的方式更进一步的增强了密封效果。
在其中一个实施例中，所述倒角呈倒锥形设置。
在其中一个实施例中，所述螺纹件包括连接段和螺纹段，所述螺纹段的一端与所述连 接段连接，另一端能够伸入所述操作孔内，并与所述操作孔螺纹连接；所述螺纹段靠近所述连接段一端套设有密封件，所述密封件用于密封所述连接段与所述阀帽之间的间隙。
本申请还提供如下技术方案：
一种空调系统，包括截止阀。
与相关技术相比，本申请提供的截止阀，通过在所述阀帽上开设有操作孔，使得所述螺纹件能够伸入所述操作孔内与所述操作孔螺纹连接，从而使得当需要对所述阀体内部进行维修检测等操作时，只需要将所述螺纹件从所述操作孔上拆卸下来，将阀杆从所述操作孔中插入，并将所述阀芯旋起检测，如此就不需要将整个所述阀帽拆卸下来再对所述阀体内部进行维修检测等操作，这样可以杜绝所述阀芯因其限位结构失效而造成所述阀芯飞出的危险。
附图说明
图1为本申请提供的截止阀的实施例一的结构示意图；
图2为本申请提供的截止阀的实施例二的结构示意图；
图3为本申请提供的截止阀的使用状态参考结构示意图。
图中各符号表示含义如下：
100、截止阀；10、阀体；11、阀腔；111、限位环；112、进口；113、出口；114、阀口；12、缩口段；20、阀芯；21、连接孔；22、阀杆；30、阀帽；31、操作孔；32、凸台；33、抵靠部；34、倒角；40、螺纹件；41、连接段；42、螺纹段；43、环形凸起；50、密封件。
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。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，当组件被称为“装设于”另一个组件，它可以直接在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。当一个组件被认为是“固定于”另一个组件，它可以是直接固定在另一个组件上或者可能同时存在居中组件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术 人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“或/及”包括一个或多个相关的所列项目的任意的和所有的组合。
请参考图1至图3，本申请提供一种截止阀100，该截止阀100设于空调系统的室内机和室外机之间的制冷剂回路上，用于开启或关闭制冷剂回路，也可以用于空调维修时抽真空或充注制冷剂。当然，在其他实施例中，截止阀100还可以应用除空调系统以外的领域中，例如流体管道输送、石油化工行业和航空航天领域等。
具体地，截止阀100包括阀体10、阀芯20以及阀帽30，阀体10内具有一端敞口设置的阀腔11，阀芯20设于阀腔11内部，并能够在阀腔11内运动，阀帽30盖设于阀体10的敞口处，并与阀体10螺纹连接；截止阀100还包括螺纹件40，阀帽30上开设有操作孔31，螺纹件40能够伸入操作孔31内，并与操作孔31螺纹连接。
需要说明的是，相关截止阀的阀帽，当维修空调时候，需要把阀帽拧下来，再对阀体内进行操作，这种结构需要对阀帽进行拆卸操作，因此在极端情况下，如果阀体内限位环或者缩口部失效，则会造成阀芯飞出阀体，造成人身安全隐患。而本实施方式中，通过在阀帽30上开设有操作孔31，使得螺纹件40能够伸入操作孔31内与操作孔31螺纹连接，从而使得当需要对阀体10内部进行维修检测等操作时，只需要将螺纹件40从操作孔31上拆卸下来，将阀杆22从操作孔31中插入，并将阀芯20旋起检测，如此就不需要将整个阀帽30拆卸下来再对阀体10内部进行维修检测等操作，这样可以杜绝阀芯20因其限位结构失效而造成阀芯20飞出的危险。
如图1及图2所示，阀体10是阀门中的一个主要零部件，不同的压力等级有不同的机械制造方法，在本实施方式中，阀体10采用铸造的工艺生产，当然，在其他实施方式中，阀体10还可以采用锻造或者其他方式的工艺生产。
具体地，阀体10材料为金属，适用于水处理、轻工、石油、化工等行业等中低压常温工况，其密封性能较好。
进一步地，阀帽30朝向阀体10一侧设有凸台32，凸台32朝向阀腔11内部的方向延伸设置，且操作孔31开设于凸台32，凸台32能够与阀芯20限位配合，当将阀杆22从操作孔31中插入并将阀芯20旋起检测时，阀芯20的端面被凸台32抵挡，从而无法与阀体10脱离，因此凸台32对阀芯20起到了限位的作用。
另外，在本实施例中，设置凸台32的好处也是为了便于放置螺纹件40，使得螺纹件40与阀帽30更加紧固的连接，若不设置凸台32，则为了与螺纹件40相配合导致阀帽30的壁厚增加，从而增加了材料成本；当然，在其他实施例中，也可以不设置凸台32，在此 不作限定。
进一步地，阀腔11内还设有限位环111，且限位环111位于阀腔11远离所述阀芯20一端，当阀杆22旋入操作孔31旋出阀芯20时可能会将阀芯20一并旋出，为避免这种情况，设置限位环111可以防止在这种情况下阀芯20在阀杆22的带动下一并被旋出，起到限位作用。
可选地，在本实施例中，凸台32远离阀帽30一端延伸至限位环111，并与限位环111位于同一平面；或者，凸台32远离阀帽30的一端穿设限位环111，并沿阀腔11轴线延伸，如此可以使得阀芯20在被旋出时先与凸台32抵挡，从而实现限位的作用，不仅在限位环111的基础上实现进一步限位，而且也保护了限位环111，使其不易失效或损坏；当然，在其他实施例中，凸台32与限位环111的相对位置也可以做其他设定，在此不作限定。
进一步地，阀体10的敞口处具有缩口段12，缩口段12与阀帽30相抵靠，阀帽30的内侧壁上设有抵靠部33，阀帽30与阀体10卡接或者螺纹连接，且抵靠部33能够抵靠于缩口段12的外壁，在凸台32和限位环111对阀芯20的双重限位的基础上，利用缩口段12对阀芯20起到了第三层限位作用，进一步增强了限位效果。
具体地，抵靠部33与缩口段12为点接触密封，即，在阀帽30与阀体10通过螺纹密封的基础上实现了第二道密封，增强了密封性能，降低了泄漏率。
实施例一
请参见图1，螺纹件40包括连接段41和螺纹段42，螺纹段42的一端与连接段41连接，另一端能够伸入操作孔31内，并与操作孔31螺纹连接；螺纹段42靠近连接段41一端的外壁上具有环形凸起43，环形凸起43能够随螺纹件40的安装抵靠于阀帽30，并与阀帽30密封连接，当拧紧螺纹件40时，环形凸起43能够与阀帽30接触并形成密封，有效地提高了密封性能，降低了泄漏率。
可选地，在本实施例中，环形凸起43的材质可以为黄铜、钢或者铝合金，使用金属材质的环形凸起43使得螺纹件40与阀帽30之间形成硬密封，增强了密封部件的耐高温强度，提高了密封部件的使用寿命。
可选地，在本实施例中，环形凸起43与螺纹件40一体成型；当然，在其他实施例中，环形凸起43也可以与螺纹件40焊接连接，在此不作限定。
进一步地，阀帽30在操作孔31远离阀芯20的一端处设有倒角34，且倒角34呈倒锥形设置，环形凸起43抵靠于所述倒角34上，当环形凸起43与倒角34相抵靠时则互相形成了点接触密封，利用点接触密封的方式更进一步的增强了密封效果。
实施例二
请参见图2，实施例二的结构与实施例一的结构基本一致，其相同部分可以参考实施例一中的阐述，在此就不再赘述，其不同之处在于：
在本实施例中，螺纹段42靠近连接段41一端套设有密封件50，密封件50用于密封连接段41与阀帽30之间的间隙。
可选地，在本实施例中，密封件50的材质可以为橡胶或者塑料，使得螺纹件40与阀帽30之间形成软密封，具有结构简单、体积小和重量轻等特点。
如图3所示，阀芯20上还开设有连接孔21，连接孔21为内螺纹孔，用于与阀杆22配合连接，阀杆22带动阀芯20沿阀体10的中心线作垂直运动，当截止阀100工作时，将螺纹件40从操作孔31处旋开，将阀杆22通过操作孔31旋入连接孔21中，顺时针转动阀杆22，阀体10关闭，切断内部介质的流通；逆时针转动阀杆22，阀体10打开，开启内部介质的流通，便于对于内部介质的操控。
作为可选地，配合于连接孔21的外部工具可选用阀杆22，当然，在其他实施例中，外部工具也可以为任意可供配合连接孔21以及操控阀芯20的工具。
进一步地，阀体10开设有分别与阀腔11连通的进口112和出口113，阀腔11内部还具有阀口114，阀芯20用于启/闭阀口114来开启/阻断进口112与出口113之间的流通。
可选地，在本实施例中，螺纹件40可以为螺钉、螺杆或者螺栓等元件，在此不作限定。
本申请还提供了一种空调系统(图未示)，包括截止阀100。
该空调系统也具有上述截止阀100的优点。
在截止阀100需要进行维修检测时，将螺纹件40从操作孔31处旋开，再将阀杆22从操作孔31处插入并与阀芯20的连接孔21螺纹配合，然后将阀芯20旋起进行检测，这样就不需要将整个阀帽30拆卸下来再对阀体10内部进行维修检测等操作，这样可以杜绝阀芯20因其限位结构失效而造成阀芯20飞出的危险；阀芯20在被旋起的过程中会与凸台32相抵靠，从而无法继续被旋出，从而实现限位的作用，不仅在限位环111的基础上实现进一步限位，而且也保护了限位环111，使其不易失效或损坏。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范 围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种截止阀，包括阀体、阀芯以及阀帽，所述阀体内具有一端敞口设置的阀腔，所述阀芯设于所述阀腔内部，并能够在所述阀腔内运动，所述阀帽盖设于所述阀体的敞口处，并与所述阀体螺纹连接；
    其特征在于，所述截止阀还包括螺纹件，所述阀帽上开设有操作孔，所述螺纹件能够伸入所述操作孔内，并与所述操作孔螺纹连接。
  2. 根据权利要求1所述的截止阀，其特征在于，所述阀帽朝向所述阀体的一侧设有凸台，所述凸台朝向所述阀腔内部的方向延伸设置，且所述操作孔开设于所述凸台，所述凸台能够与所述阀芯限位配合。
  3. 根据权利要求2所述的截止阀，其特征在于，所述阀腔内还设有限位环，且所述限位环位于所述阀腔远离所述阀芯一端，所述凸台远离所述阀帽一端延伸至所述限位环，并与所述限位环位于同一平面；
    或者，所述凸台远离所述阀帽的一端穿设所述限位环，并沿所述阀腔轴线延伸。
  4. 根据权利要求3所述的截止阀，其特征在于，所述阀体的敞口处具有缩口段，所述缩口段与所述阀帽相抵靠。
  5. 根据权利要求4所述的截止阀，其特征在于，所述阀帽的内侧壁上设有抵靠部，所述阀帽与所述阀体卡接或者螺纹连接，且所述抵靠部能够抵靠于所述缩口段的外壁。
  6. 根据权利要求1所述的截止阀，其特征在于，所述螺纹件包括连接段和螺纹段，所述螺纹段的一端与所述连接段连接，另一端能够伸入所述操作孔内，并与所述操作孔螺纹连接；
    所述螺纹段靠近所述连接段一端的外壁上具有环形凸起，所述环形凸起能够随所述螺纹件的安装抵靠于所述阀帽，并与所述阀帽密封连接。
  7. 根据权利要求6所述的截止阀，其特征在于，所述阀帽在所述操作孔远离所述阀芯的一端处设有倒角，所述环形凸起抵靠于所述倒角上。
  8. 根据权利要求7所述的截止阀，其特征在于，所述倒角呈倒锥形设置。
  9. 根据权利要求1所述的截止阀，其特征在于，所述螺纹件包括连接段和螺纹段，所述螺纹段的一端与所述连接段连接，另一端能够伸入所述操作孔内，并与所述操作孔螺纹连接；
    所述螺纹段靠近所述连接段一端套设有密封件，所述密封件用于密封所述连接段与所述阀帽之间的间隙。
  10. 一种空调系统，其特征在于，包括如权利要求1-9任意一项所述的截止阀。
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CN214305495U (zh) 2021-09-28
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JP7538945B2 (ja) 2024-08-22

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