WO2022037461A1 - 阀芯组件及具有其的换向阀 - Google Patents

阀芯组件及具有其的换向阀 Download PDF

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Publication number
WO2022037461A1
WO2022037461A1 PCT/CN2021/112125 CN2021112125W WO2022037461A1 WO 2022037461 A1 WO2022037461 A1 WO 2022037461A1 CN 2021112125 W CN2021112125 W CN 2021112125W WO 2022037461 A1 WO2022037461 A1 WO 2022037461A1
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WO
WIPO (PCT)
Prior art keywords
slider
inlet passage
core assembly
valve core
valve
Prior art date
Application number
PCT/CN2021/112125
Other languages
English (en)
French (fr)
Inventor
张飞
杜飞龙
朱佳峰
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.)
Filing date
Publication date
Priority claimed from CN202021756472.7U external-priority patent/CN212389797U/zh
Priority claimed from CN202010844928.3A external-priority patent/CN114076212A/zh
Priority claimed from CN202023340807.XU external-priority patent/CN214617976U/zh
Priority claimed from CN202011635625.7A external-priority patent/CN114688302A/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 US18/021,814 priority Critical patent/US20230358323A1/en
Priority to JP2023510482A priority patent/JP2023538339A/ja
Priority to KR1020237007103A priority patent/KR20230042511A/ko
Publication of WO2022037461A1 publication Critical patent/WO2022037461A1/zh

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    • 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
    • F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing 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
    • 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
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
    • 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
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members

Definitions

  • the present application relates to the technical field of reversing valves, and in particular, to a valve core assembly and a reversing valve having the same.
  • the existing four-way valve structure mainly includes a valve cavity and an inlet pipe 2, a first outlet pipe 3 and a second outlet pipe 4 communicating with the valve cavity.
  • the slider 1 is moved and arranged in the valve cavity, By moving the slider 1 , the valve cavity can be communicated with the first outlet pipe 3 or with the second outlet pipe 4 .
  • the present application provides a valve core assembly and a reversing valve having the same, so as to solve the problem that the reversing valve in the related art is prone to reversing failure.
  • a valve core assembly includes: a guide frame; There is a blocking part, and the blocking part is used to block the inlet passage.
  • the surface of the blocking portion close to the inlet channel has an arc-shaped structure.
  • the surface of the blocking portion close to the inlet channel is a plane structure.
  • the blocking portion and the slider are integrally formed.
  • the blocking part has a top surface and a bottom surface arranged oppositely, the top surface of the blocking part is used to block the inlet channel, the bottom surface is an arc surface, the bottom surface is matched with the upper surface of the slider, and the blocking part has an arc surface.
  • the bottom surface is connected with the slider.
  • the guide frame has an escape hole, and the sliding block is penetrated in the escape hole.
  • the slider includes a main body and a bottom plate, the main body has a cavity, the blocking part is arranged on the top of the main body, the bottom plate is annularly arranged at the bottom of the main body, the bottom plate cooperates with the escape hole to limit the relative position of the slider and the guide frame, and the bottom plate is located at the bottom of the main body.
  • the blocking part is located on the other side of the guide frame.
  • a reversing valve includes: a valve body, the valve body has an inlet passage, a plurality of outlet passages, and a chamber, and both the inlet passage and the outlet passage communicate with the chamber; the valve The core assembly, the valve core assembly is the valve core assembly provided above, the valve core assembly is movably arranged in the chamber, the side of the slider of the valve core assembly with the cavity is arranged toward the plurality of outlet channels, and the slider has a seal.
  • One side of the blocking portion is disposed toward the inlet passage, and the blocking portion has a blocking position for blocking the inlet passage and a conducting position for conducting the inlet passage.
  • valve body has two outlet channels and a low pressure channel, the two outlet channels and the low pressure channel are arranged side by side on one side of the valve body, the inlet channel is arranged on the other side of the valve body, and the low pressure channel is located between the two outlet channels , the inlet channel is set corresponding to the low pressure channel, and the blocking part is located in the middle of the slider.
  • cross-sectional size of the blocking portion is greater than or equal to the size of the inlet passage.
  • the cross-sectional size of the blocking portion is smaller than the size of the inlet channel.
  • the side of the valve core assembly facing the plurality of outlet channels is the first side
  • the side of the valve core assembly facing the inlet channels is the second side
  • the cross-sectional area of the inlet channel is S1
  • the valve core assembly is located at the inlet.
  • the projection of the end of the inlet passage on the second side of the valve core assembly and the end of the inlet passage forms an exhaust passage
  • the sidewall area of the exhaust passage is S2, and S1/S2 ⁇ 1.
  • an exhaust passage is formed between the projection of the end of the inlet passage on the blocking portion and the end of the inlet passage.
  • the blocking portion is a shielding boss, and the shielding boss is arranged on the side of the slider facing the inlet channel.
  • a part of the surface of the slider facing the inlet passage forms a blocking portion.
  • the diameter of the inlet passage is d
  • the projection of the end of the inlet passage on the second side of the valve core assembly is between the projection of the end of the inlet passage and the end of the inlet passage.
  • the distance between them is X
  • the valve core assembly includes a guide frame and a slider, the slider is drivably connected to the guide frame, and a blocking part is arranged on one side of the slider, and the inlet channel is blocked by the blocking part, then the When the slider moves to the middle position, the inlet channel is blocked by the blocking part, so as to ensure that the fluid with sufficient pressure in the inlet channel flows into the capillary connected to the inlet channel, so as to ensure that there is sufficient pressure to push the piston to continue to move, so that the The slider moves to the reverse position.
  • FIG. 1 shows a schematic structural diagram provided by a reversing valve of the related art
  • FIG. 2 shows a schematic structural diagram of a reversing valve provided according to an embodiment of the present application
  • Fig. 3 shows another schematic structural diagram of a reversing valve provided according to an embodiment of the present application
  • FIG. 4 shows a schematic structural diagram of the first embodiment of the slider in FIG. 2;
  • FIG. 5 shows a schematic structural diagram of the second embodiment of the slider in FIG. 2;
  • FIG. 6 shows a schematic structural diagram of a blocking part provided according to an embodiment of the present application.
  • FIG. 7 shows a schematic structural diagram of the reversing valve provided in Embodiment 3 of the present application.
  • FIG. 8 shows a partial cross-sectional view of the reversing valve provided in Embodiment 3 of the present application.
  • FIG. 9 shows a schematic view of the size of the reversing valve provided in Embodiment 3 of the present application.
  • FIG. 10 shows a partial cross-sectional view of the reversing valve provided in the fourth embodiment of the present application.
  • Embodiment 1 of the present application provides a valve core assembly, which includes: a guide frame 10 and a slider 20 .
  • the guide frame 10 is drivingly connected with the slider 20, and the guide frame 10 is used to drive the slider 20 to move in the valve cavity.
  • One side of the sliding block 20 has a cavity, and the other side of the sliding block 20 is provided with a blocking part 30, and the blocking part 30 is used to block the inlet passage.
  • the cavity is used to isolate part of the outlet channel, so that the fluid can flow out of the specific outlet channel.
  • the block 20 can be used to block the inlet channel during the process of moving and reversing, so that when the outlet channel communicates with each other, it can also ensure that the inlet channel provides sufficient supply to the capillary.
  • the fluid pressure can further ensure that the reversing valve piston pushes the guide frame 10 and the slider 20 to continue to move to the preset position, so as to ensure the normal reversal of the passage.
  • the surface of the blocking portion 30 close to the inlet channel may be a plane structure, so that the structure is simple and the manufacturing cost is low.
  • the surface of the blocking portion 30 close to the inlet passage can also be set to an arc-shaped structure.
  • the arc-shaped structure can be used to better communicate with the inlet passage. The ends are fitted to improve the sealing effect.
  • the size of the blocking portion 30 may be larger than the size of the end portion of the inlet passage, or may be set to be equal to the size of the end portion of the inlet passage, or smaller than the size of the end portion of the inlet passage, as long as the blocking portion 30 can be moved to When the end of the inlet channel is located, it can block and hinder the fluid in the inlet channel, so as to ensure the fluid pressure on the capillary connected to the inlet channel.
  • the blocking portion 30 and the slider 20 are integrally formed, which is simple in structure, convenient for processing and installation, and can improve installation efficiency.
  • the blocking portion 30 and the slider 20 can also be provided as separate structures.
  • the blocking part 30 has a top surface and a bottom surface arranged opposite to each other.
  • the top surface of the blocking part 30 is used to block the inlet channel, and the top surface can be a plane or an arc surface.
  • the bottom surface of the blocking part 30 is an arc surface, the bottom surface is matched with the upper surface of the slider 20 , and the bottom surface of the blocking part 30 is connected with the slider 20 .
  • the connection can be performed by bonding, welding or other connection methods.
  • the guide frame 10 is provided with an escape hole, and the slider 20 is penetrated in the escape hole.
  • the slider 20 is penetrated and fixed in the guide frame 10, and one end of the slider 20 is located in the guide frame 10.
  • One side of the slider 20 is located on the other side of the guide frame 10, so that the guide frame 10 drives the slider 20 to move laterally.
  • the slider 20 includes a main body 21 and a bottom plate 22, the main body 21 has a cavity, the blocking part 30 is arranged on the top of the main body 21, the bottom plate 22 is annularly arranged at the bottom of the main body 21, and the bottom plate 22 cooperates with the avoidance holes to limit the sliding
  • the relative position of the block 20 and the guide frame 10 is that the bottom plate 22 is located on one side of the guide frame 10 , and the blocking part 30 is located on the other side of the guide frame 10 .
  • the bottom plate 22 is covered on one side of the outlet channel, and the guide frame 10 drives the slider 20 to translate so that the bottom plate 22 moves above the outlet channel.
  • the second embodiment of the present application provides a reversing valve
  • the reversing valve includes a valve body 40 and a valve core assembly 50 .
  • the valve body 40 has an inlet channel 41 , a plurality of outlet channels 42 and a chamber 44 , and both the inlet channel 41 and the outlet channel 42 communicate with the chamber 44 .
  • the valve core assembly 50 is the valve core assembly provided in the above-mentioned embodiment.
  • the valve core assembly 50 is movably arranged in the cavity 44 , and the side of the slider 20 with the cavity is disposed toward the plurality of outlet passages 42 .
  • the side with the blocking portion is disposed toward the inlet passage 41 , and the blocking portion 30 has a blocking position for blocking the inlet passage 41 and a conducting position for conducting the inlet passage 41 .
  • the slider 20 has a plurality of communication positions in the chamber 44.
  • the corresponding outlet channel 42 communicates with the chamber 44, and the other outlet channels 42 communicate with the chamber through the slider 20.
  • Chamber 44 is isolated.
  • the inlet channel 41 can be blocked by the blocking part 30, which can prevent the slider 20 from causing multiple outlet channels to communicate with each other during the movement process , so that the inlet channel 41 is insufficient to supply pressure to the capillary tube that communicates with it.
  • the valve body 40 has two outlet passages 42 and a low pressure passage 43 , the two outlet passages 42 and the low pressure passage 43 are arranged side by side on one side of the valve body 40 , and the inlet passage 41 is arranged on the other side of the valve body 40 .
  • the low pressure channel 43 is located between the two outlet channels 42
  • the inlet channel 41 is provided corresponding to the low pressure channel 43
  • the blocking part 30 is located in the middle of the slider 20 .
  • the cross-sectional size of the blocking portion 30 is greater than or equal to the size of the inlet passage 41, so that the inlet passage 41 can be completely blocked by the blocking portion 30, so as to ensure that the inlet passage 41 can be blocked when the blocking portion 30 blocks the inlet passage.
  • the fluid can be introduced into the capillary tube to ensure that the pistons on both sides of the guide frame 10 are pushed to move by the fluid pressure, so that the slider 20 can be moved to a preset position.
  • the slider 20 has a first communication position and a second communication position opposite to each other.
  • the blocking portion 30 can block the inlet passage. 41 to block.
  • the guide frame 10 and the slider 20 are located on the left side of the chamber 44 , the inlet channel 41 is communicated with the outlet channel 42 on the right side, and the slider 20 is in the first communication position; when the guide frame 10 needs to be connected
  • the fluid in the capillary communicating with the inlet channel 41 can be passed to the left side of the chamber 44 through the control of the upper pilot valve, so that the fluid can push the piston to move to the right.
  • the fluid has sufficient pressure to push the left piston to continue to move to the right, so as to drive the guide frame 10 and the slider 20 to continue to move to the right, so that the cavity cover of the slider 20 is located in the low pressure channel 43 and the outlet on the right side
  • the left outlet channel 42 is communicated with the inlet channel 41, the slider 20 is at the second communication position, and the valve body has completed the reversing operation.
  • the technical solution provided by the present application has a simple structure, is convenient for manufacture and processing, can prevent the valve body from commutating failure, and ensure the normal operation of the valve body.
  • the third embodiment of the present application provides a reversing valve
  • the reversing valve includes a valve body 40 and a valve core assembly 50
  • the valve body 40 has a chamber 44 , an inlet channel 41 and a plurality of The outlet channel 42 , the inlet channel 41 and the outlet channel 42 are all communicated with the chamber 44 , and the valve core assembly 50 is movably arranged in the chamber 44 .
  • the first side of the spool assembly 50 is disposed toward the plurality of outlet passages 42
  • the second side of the spool assembly 50 is disposed toward the inlet passages 41 .
  • the spool assembly 50 can be used.
  • the communication states of the plurality of outlet passages 42 and the chamber 44 are switched.
  • the cross-sectional area of the inlet passage 41 is S1
  • the valve core assembly 50 is located below the inlet passage 41, the projection of the end of the inlet passage 41 on the second side of the valve core assembly 50 and the end of the inlet passage 41
  • An exhaust passage 60 is formed therebetween, and the sidewall area of the exhaust passage 60 is S2, and S1/S2 ⁇ 1.
  • the exhaust passage 60 refers to a cylindrical shape jointly enclosed by the projection of the end of the inlet passage 41 on the second side of the valve core assembly 50 and the end of the inlet passage 41
  • the fluid in the inlet channel 41 can flow into the chamber 44 through the side wall of the cylindrical channel.
  • the second side of the valve core assembly 50 has a blocking portion 30 , and an exhaust passage is formed between the projection of the end portion of the inlet passage 41 on the blocking portion 30 and the end portion of the inlet passage 41 . 60.
  • the valve core assembly 50 uses the blocking part 30 to block part of the inlet passage 41, so that when the outlet passages communicate with each other, the inlet passage can also ensure that the inlet passage provides sufficient fluid pressure to the capillary, thereby ensuring the replacement of the valve.
  • the valve core assembly 50 is pushed toward the valve piston to continue to move to the preset position, so as to ensure the normal operation of the channel reversal.
  • the blocking portion 30 includes a structure integrally formed with the valve core assembly 50 , and the blocking portion 30 further includes a structure provided separately from the valve core assembly 50 .
  • the surface of the blocking part 30 close to the inlet channel 41 is an arc structure or a plane structure.
  • the surface of the blocking portion 30 close to the inlet passage 41 is a plane structure, which facilitates the calculation of the sidewall area of the exhaust passage 60 and facilitates the control of the ratio of S1 and S2.
  • the plane structure is adopted, the structure is simple, and the manufacturing cost is low.
  • the surface of the blocking portion 30 close to the inlet channel 41 can be set as an arc-shaped structure. Since the end of the inlet channel 41 is also arc-shaped, the arc-shaped structure can be used to better connect with the inlet channel. The ends are matched to improve the occlusion effect.
  • the valve core assembly 50 includes a guide frame 10 and a slider 20 , the guide frame 10 is drivingly connected with the slider 20 , and the blocking portion 30 is provided on the slider 20 .
  • the slider 20 can be driven to move in the chamber 44 by the guide frame 10 , and the communication state between the plurality of outlet channels 42 and the chamber 44 can be switched by the slider 20 . Disposing the blocking portion 30 on the slider 20 facilitates the processing of the blocking portion 30 and can reduce the processing cost.
  • the blocking portion 30 on the slider 20 can block a part of the air inlet area of the inlet passage 41, which can not only reduce the quality of the refrigerant leaked when the slider 20 is in the middle position
  • the flow rate can also force the refrigerant to enter the capillary communicating with the inlet channel 41, thereby increasing the pressure entering the cavity at the left end or the cavity at the right end, increasing the thrust of the piston baffle, and the slider 20 can smoothly realize the reversal.
  • the blocking portion 30 is a shielding boss, and the shielding boss is disposed on the side of the slider 20 facing the inlet channel 41 .
  • the surface of the shielding boss close to the inlet channel 41 is an arc structure or a plane structure.
  • the blocking portion 30 and the slider 20 are integrally formed, which is convenient for processing and assembling, has low cost, and can improve the installation efficiency.
  • the blocking portion 30 and the slider 20 can also be provided as separate structures.
  • the blocking part 30 has a top surface and a bottom surface arranged opposite to each other.
  • the top surface of the blocking part 30 is used to block the inlet passage, and the top surface can be a plane surface or an arc surface.
  • the bottom surface of the blocking part 30 is an arc surface, the bottom surface is matched with the upper surface of the slider 20 , and the bottom surface of the blocking part 30 is connected with the slider 20 .
  • the connection can be performed by bonding, welding or other connection methods.
  • the guide frame 10 is provided with an escape hole, and the sliding block 20 is inserted in the escape hole.
  • the sliding block 20 is penetrated and fixed in the guide frame 10, and one end of the sliding block 20 is located in the guide frame. 10, the other end of the slider 20 is located on the other side of the guide frame 10, so that the guide frame 10 drives the slider 20 to move laterally.
  • the slider 20 has a plurality of communication positions in the chamber 44.
  • the corresponding outlet channel 42 communicates with the chamber 44, and the other outlet channels 42 communicate with the chamber through the slider 20.
  • Chamber 44 is isolated.
  • the inlet channel 41 can be blocked by the blocking part 30, so as to prevent the slider 20 from causing multiple outlet channels 42 to communicate with each other during the movement process , so that the inlet channel 41 is insufficient to supply pressure to the capillary tube that communicates with it.
  • the slider 20 has a first communication position and a second communication position opposite to each other. During the movement of the slider 20 between the first communication position and the second communication position, the blocking portion 30 can block the inlet passage. 41 for occlusion.
  • the valve body 40 has a low-pressure passage 43 and two outlet passages 42 .
  • the low-pressure passage 43 and the two outlet passages 42 are arranged side by side on one side of the valve body 40 , and the inlet passage 41 is arranged on the side of the valve body 40 .
  • the low pressure channel 43 is located between the two outlet channels 42
  • the inlet channel 41 is provided corresponding to the low pressure channel 43
  • the blocking part 30 is located in the middle of the slider 20 .
  • the blocking portion 30 is arranged in the middle of the sliding block 20 , which facilitates the processing of the sliding block 20 , and can ensure the processing accuracy, thereby ensuring the blocking effect of the blocking portion 30 .
  • the two outlet channels 42 and the low-pressure channel 43 communicate with each other. At this time, the pressure in the chamber 44 is relatively low.
  • the blocking part 30 By setting the blocking part 30 and moving the slider 20 When it reaches the middle, the inlet channel 41 is shielded by the blocking part 30, which can prevent or reduce the leakage of the fluid in the inlet channel 41 into the chamber 44, so that the fluid in the inlet channel 41 can flow to the left side of the chamber 44.
  • the maximum cross-sectional size of the blocking portion 30 is greater than or equal to the size of the inlet channel 41 , so that the blocking effect of the blocking portion 30 can be ensured, and the ratio of S1 and S2 can be easily controlled.
  • the blocking portion 30 can block the fluid in the inlet channel and ensure the fluid pressure on the capillary communicating with the inlet channel.
  • the inlet channel 41 is a circular channel
  • the diameter of the inlet channel 41 is d
  • the diameter of the inlet channel 41 is d.
  • the distance between the projection of the end portion on the second side of the valve core assembly 50 and the end portion of the inlet passage 41 is X
  • the reversing valve includes an electromagnetic four-way reversing valve.
  • Embodiment 4 of the present application provides a reversing valve.
  • the difference between Embodiment 4 and Embodiment 3 is that, in Embodiment 4, a part of the surface of the slider 20 facing the inlet passage 41 forms a blockage Section 30.
  • the structure of the sliding block 20 is relatively simple, the processing of the sliding block 20 is convenient, and the processing cost can be reduced.
  • the technical solution provided by the present application has a simple structure, is convenient for manufacture and processing, can prevent the valve body from commutating failure, and ensure the normal operation of the valve body.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Sliding Valves (AREA)
  • Multiple-Way Valves (AREA)

Abstract

一种阀芯组件及具有其的换向阀，该阀芯组件包括：导向架（10）；滑块（20），导向架（10）与滑块（20）驱动连接，滑块（20）的一侧具有空腔，滑块（20）的另一侧设置有封堵部（30），封堵部（30）用于封堵进口通道。该技术方案能够解决现有技术中的换向阀易出现换向失败的问题。

Description

阀芯组件及具有其的换向阀
本申请要求以下专利申请的优先权：
(1)2020年08月20日提交至中国国家知识产权局，申请号为202010844928.3，发明名称为“阀芯组件及具有其的换向阀”的专利申请的优先权；
(2)2020年08月20日提交至中国国家知识产权局，申请号为202021756472.7，发明名称为“阀芯组件及具有其的换向阀”的专利申请的优先权；
(3)2020年12月31日提交至中国国家知识产权局，申请号为202011635625.7，发明名称为“换向阀”的专利申请的优先权；
(4)2020年12月31日提交至中国国家知识产权局，申请号为202023340807.X，发明名称为“换向阀”的专利申请的优先权。
技术领域
本申请涉及换向阀技术领域，具体而言，涉及一种阀芯组件及具有其的换向阀。
背景技术
如图1所示，现有四通阀结构，其主要包括阀腔和与阀腔连通的进口管道2、第一出口管道3以及第二出口管道4，滑块1移动设置在阀腔内，通过移动滑块1，可以使阀腔与第一出口管道3连通或与第二出口管道4连通。在换向过程中，滑块1移动至中间位置时，第一出口管道3、第二出口管道4以及低压管道相互连通，导致阀腔内泄压较快，与进口管道2连通的毛细管供压不足，使得活塞挡板左右两侧的推力下降，严重时会出现滑块1停在中间无法继续移动的情况，导致四通阀工作失效。
发明内容
本申请提供一种阀芯组件及具有其的换向阀，以解决相关技术中的换向阀易出现换向失败的问题。
根据本申请的一个方面，提供了一种阀芯组件，阀芯组件包括：导向架；滑块，导向架与滑块驱动连接，滑块的一侧具有空腔，滑块的另一侧设置有封堵部，封堵部用于封堵进口通道。
进一步地，封堵部的靠近进口通道的表面为弧形结构。
进一步地，封堵部的靠近进口通道的表面为平面结构。
进一步地，封堵部与滑块为一体成型结构。
进一步地，封堵部具有相对设置的顶面和底面，封堵部的顶面用于封堵进口通道，底面为弧形面，底面与滑块的上表面相适配，且封堵部的底面与滑块连接。
进一步地，导向架具有避让孔，滑块穿设在避让孔内。
进一步地，滑块包括主体和底板，主体具有空腔，封堵部设置在主体的顶部，底板环形设置在主体的底部，底板与避让孔配合以限制滑块与导向架的相对位置，底板位于导向架的一侧，封堵部位于导向架的另一侧。
根据本申请的另一方面，提供了一种换向阀，换向阀包括：阀体，阀体具有进口通道、多个出口通道以及腔室，进口通道与出口通道均与腔室连通；阀芯组件，阀芯组件为上述提供的阀芯组件，阀芯组件可移动地设置在腔室内，阀芯组件的滑块的具有空腔的一侧朝向多个出口通道设置，滑块的具有封堵部的一侧朝向进口通道设置，封堵部具有封堵进口通道的封堵位置和导通进口通道的导通位置。
进一步地，阀体具有两个出口通道以及低压通道，两个出口通道以及低压通道并排设置在阀体的一侧，进口通道设置在阀体的另一侧，低压通道位于两个出口通道之间，进口通道对应低压通道设置，封堵部位于滑块的中部。
进一步地，封堵部的截面尺寸大于或等于进口通道的尺寸。
进一步地，封堵部的截面尺寸小于进口通道的尺寸。
进一步地，阀芯组件的朝向多个出口通道的一侧为第一侧，阀芯组件的朝向进口通道的一侧为第二侧，进口通道的横截面积为S1，在阀芯组件位于进口通道的下方时，进口通道的端部在阀芯组件的第二侧上的投影与进口通道的端部之间形成排气通道，排气通道的侧壁面积为S2，S1/S2≥1。
进一步地，进口通道的端部在封堵部上的投影与进口通道的端部之间形成排气通道。
进一步地，封堵部为遮挡凸台，遮挡凸台设置在滑块的朝向进口通道的一侧。
进一步地，滑块的朝向进口通道的部分表面形成封堵部。
进一步地，进口通道的直径为d，进口通道的横截面积S1＝π·(d/2) 2，进口通道的端部在阀芯组件的第二侧上的投影与进口通道的端部之间的距离为X，排气通道的侧壁面积S2＝π·d·X。
应用本申请的技术方案，该阀芯组件包括导向架和滑块，滑块与导向架驱动连接，在滑块的一侧设置封堵部，利用该封堵部封堵进口通道，则可以在滑块移动至中间位置时，利用封堵部封堵进口通道，以保证进口通道内有充足压力的流体流入至与进口通道连通的毛细管内，进而可以保证有充足压力推动活塞继续移动，以使滑块移动至换向位置。通过上述结构，能够避免滑块在换向过程中停止的情况发生，保证换向的正常进行。
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示出了相关技术的换向阀提供的结构示意图；
图2示出了根据本申请实施例提供的换向阀的结构示意图；
图3示出了根据本申请实施例提供的换向阀的又一结构示意图；
图4示出了图2中滑块的第一实施例的结构示意图；
图5示出了图2中滑块的第二实施例的结构示意图；
图6示出了根据本申请实施例提供的封堵部的结构示意图；
图7示出了本申请实施例三提供的换向阀的结构示意图；
图8示出了本申请实施例三提供的换向阀的局部剖视图；
图9示出了本申请实施例三提供的换向阀的尺寸示意图；
图10示出了本申请实施例四提供的换向阀的局部剖视图。
其中，上述附图包括以下附图标记：
1、滑块；2、进口管道；3、第一出口管道；4、第二出口管道；
10、导向架；20、滑块；21、主体；22、底板；30、封堵部；40、阀体；41、进口通道；42、出口通道；43、低压通道；44、腔室；
50、阀芯组件；60、排气通道；d、进口通道的直径；X、进口通道的端部在阀芯组件的第二侧上的投影与进口通道的端部之间的距离。
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2和图3所示，本申请实施例一提供了一种阀芯组件，该阀芯组件包括：导向架10和滑块20。其中，导向架10与滑块20驱动连接，导向架10用于驱动滑块20在阀腔内移动。滑块20的一侧具有空腔，滑块20的另一侧设置有封堵部30，封堵部30用于封堵进口通道。其中，该空腔用于隔离部分出口通道，以使流体从特定出口通道流出。
通过本申请提供的技术方案，能够使滑块20在移动、换向的过程中，利用封堵部30封堵进口通道，使得出口通道在出现相互连通时，也能够保证进口通道向毛细管提供充足流体压力，进而可以保证换向阀活塞推动导向架10和滑块20继续移动至预设位置，保证通道换向的正常进行。
其中，如图4所示，封堵部30的靠近进口通道的表面可以为平面结构，如此设置其结构简单、加工制造成本低。
其中，如图5所示，封堵部30的靠近进口通道的表面也可以设置为弧形结构，通过将封堵部30设置为弧形结构，可以利用该弧形结构更好地与进口通道的端部贴合，以提高封堵效果。
具体的，封堵部30的尺寸可以大于进口通道端部的尺寸，也可设置为等于进口通道端部的尺寸，也可小于进口通道端部的尺寸，只要能够使封堵部30在移动至进口通道端部位置处时，对进口通道的流体起到封堵、阻碍作用，保证对与进口通道连通的毛细管的流体压力即可。
在图4和图5所示的结构中，封堵部30与滑块20为一体成型结构，其结构简单、便于加工和安装，能够提高安装效率。
当然，也可将封堵部30与滑块20设置为分体结构。如图6所示，该封堵部30具有相对设置的顶面和底面，封堵部30的顶面用于封堵进口通道，其顶面可以为平面，也可为弧形面。封堵部30的底面为弧形面，底面与滑块20的上表面相适配，且封堵部30的底面与滑块20连接。具体可通过粘接、焊接或其它连接方式进行连接。通过上述结构，能够简化装置结构，便于对滑块20和封堵部30进行加工，提高了加工效率，降低了对零部件的加工成本。
在本申请中，该导向架10设置有避让孔，滑块20穿设在避让孔内，通过上述结构，使滑块20穿设固定在导向架10内，滑块20的一端位于导向架10的一侧，滑块20的另一端位于导向架10的另一侧，如此便于导向架10驱动滑块20横向移动。
具体的，该滑块20包括主体21和底板22，主体21具有空腔，封堵部30设置在主体21的顶部，底板22环形设置在主体21的底部，底板22与避让孔配合以限制滑块20与导向架10的相对位置，底板22位于导向架10的一侧，封堵部30位于导向架10的另一侧。通过设置底板22，可以提高滑块20的具有空腔一侧的耐磨性，并可通过底板22限制导向架10与滑块20的上下位置。底板22罩设在出口通道的一侧，导向架10驱动滑块20平移，以使底板22在出口通道上方移动。
如图2和图3所示，本申请实施例二提供了一种换向阀，该换向阀包括：阀体40以及阀芯组件50。其中，阀体40具有进口通道41、多个出口通道42以及腔室44，进口通道41与出口通道42均与腔室44连通。阀芯组件50为上述实施例提供的阀芯组件，阀芯组件50可移动地设置在腔室44内，滑块20的具有空腔的一侧朝向多个出口通道42设置，滑块20的 具有封堵部的一侧朝向进口通道41设置，封堵部30具有封堵进口通道41的封堵位置和导通进口通道41的导通位置。
其中，滑块20在腔室44内具有多个连通位置，当滑块20移动至其中一个连通位置时，与其对应的出口通道42与腔室44连通，其它出口通道42通过滑块20与腔室44隔离。在滑块20由其中一个连通位置移动至下一连通位置的过程中，可通过封堵部30对进口通道41进行封堵，这样可以避免滑块20在移动过程中造成多个出口通道相互串通，使进口通道41向与其连通的毛细管供压不足的情况发生。
具体在本实施例中，阀体40具有两个出口通道42以及低压通道43，两个出口通道42以及低压通道43并排设置在阀体40的一侧，进口通道41设置在阀体40的另一侧，低压通道43位于两个出口通道42之间，进口通道41对应低压通道43设置，封堵部30位于滑块20的中部。
其中，封堵部30的截面尺寸大于或等于进口通道41的尺寸，以通过该封堵部30对进口通道41实现完全封堵，以保证进口通道41在封堵部30封堵进口通道时，能够将流体通入至毛细管内，保证通过该流体压力推动导向架10两侧的活塞移动，进而能够使滑块20移动至预设位置。
在本实施例中，滑块20具有相对的第一连通位置和第二连通位置，滑块20在第一连通位置和第二连通位置之间移动的过程中，封堵部30可对进口通道41进行封堵。如图2所示，此时导向架10和滑块20位于腔室44的左侧，进口通道41与右侧的出口通道42连通，滑块20处于第一连通位置；当需要将导向架10和滑块20向右侧移动时，通过上方导阀控制，可将与进口通道41连通的毛细管内的流体通入至腔室44左侧，使流体能够推动活塞向右侧移动。如图3所示，当滑块20移动至中间位置时，两个出口通道42以及低压通道43相互连通，此时腔室44内压力较低，通过设置封堵部30并在滑块20移动至中部时，利用封堵部30对进口通道41进行封堵，可以避免进口通道41内的流体泄入至腔室44内，这样能够使进口通道41内的流体能够全部流至腔室44的左侧，保证流体有充足压力推动左侧活塞继续向右移动，进而能够驱动导向架10和滑块20继续向右移动，使滑块20的空腔罩设在低压通道43和右侧的出口通道42，并使左侧出口通道42与进口通道41连通时，此时滑块20位于第二连通位置，阀体完成了换向操作。
通过本申请提供的技术方案，其结构简单，方便制造和加工，能够避免阀体出现换向失败的情况，保证阀体能够正常运行。
如图7至图9所示，本申请实施例三提供了一种换向阀，该换向阀包括阀体40和阀芯组件50，阀体40具有腔室44、进口通道41以及多个出口通道42，进口通道41与出口通道42均与腔室44连通，阀芯组件50可移动地设置在腔室44内。阀芯组件50的第一侧朝向多个出口通道42设置，阀芯组件50的第二侧朝向进口通道41设置，阀芯组件50在腔室44内移动的过程中，可以利用阀芯组件50切换多个出口通道42与腔室44的连通状态。其中，进口通道41的横截面积为S1，在阀芯组件50位于进口通道41的下方时，进口通道41的端部在 阀芯组件50的第二侧上的投影与进口通道41的端部之间形成排气通道60，排气通道60的侧壁面积为S2，S1/S2≥1。
应用本实施例提供的换向阀，通过将S1与S2的比值设置在上述范围内，在阀芯组件50移动至中间位置时，能够保证进口通道41内有充足压力的流体流入至与进口通道41连通的毛细管内，进而可以保证有充足压力推动阀芯组件50继续移动，以使阀芯组件50移动至换向位置。通过上述结构，能够避免滑块在换向过程中停止的情况发生，保证换向的正常进行。
需要说明的是，在本实施例中，排气通道60指的是，进口通道41的端部在阀芯组件50的第二侧上的投影与进口通道41的端部共同围成的筒形通道，进口通道41内的流体可通过筒形通道的侧壁流通至腔室44内。
如图7和图8所示，阀芯组件50的第二侧具有封堵部30，进口通道41的端部在封堵部30上的投影与进口通道41的端部之间形成排气通道60。阀芯组件50在移动、换向的过程中，利用封堵部30封堵部分进口通道41，使得出口通道在出现相互连通时，也能够保证进口通道向毛细管提供充足流体压力，进而可以保证换向阀活塞推动阀芯组件50继续移动至预设位置，保证通道换向的正常进行。
其中，封堵部30包括与阀芯组件50一体成型的结构，封堵部30还包括与阀芯组件50分体设置的结构。
具体地，封堵部30的靠近进口通道41的表面为弧形结构或平面结构。在本实施例中，封堵部30的靠近进口通道41的表面为平面结构，如此便于计算排气通道60的侧壁面积，进而便于控制S1与S2的比值。并且，采用平面结构，其结构简单、加工制造成本低。
在其它实施例中，可将封堵部30的靠近进口通道41的表面设置为弧形结构，由于进口通道41的端部同样为弧形，可以利用该弧形结构能够更好地与进口通道的端部相配合，以提高遮挡效果。
如图7所示，在本实施例中，阀芯组件50包括导向架10和滑块20，导向架10与滑块20驱动连接，封堵部30设置在滑块20上。利用导向架10可驱动滑块20在腔室44内移动，利用滑块20可切换多个出口通道42与腔室44的连通状态。将封堵部30设置在滑块20上，便于对封堵部30进行加工，能够降低加工成本。
具体地，在阀芯组件50移动至中间位置时，利用滑块20上的封堵部30能够遮挡一部分进口通道41的进气口面积，不仅能降低滑块20在中间位置时泄漏的冷媒质量流量，也能迫使冷媒进入与进口通道41连通的毛细管，从而能提高进入左端腔体或右端腔体的压力，提高活塞挡板推力，滑块20能顺利实现换向。
在本实施例中，封堵部30为遮挡凸台，遮挡凸台设置在滑块20的朝向进口通道41的一侧。采用设置遮挡凸台的方式，无需对滑块20进行大的改进，便于对滑块20进行加工，改进成本低。
其中，遮挡凸台的靠近进口通道41的表面为弧形结构或平面结构。
在本实施例中，封堵部30与滑块20为一体成型结构，便于加工和装配，成本低，能够提高安装效率。
当然，也可将封堵部30与滑块20设置为分体结构。封堵部30具有相对设置的顶面和底面，封堵部30的顶面用于遮挡进口通道，其顶面可以为平面，也可为弧形面。封堵部30的底面为弧形面，底面与滑块20的上表面相适配，且封堵部30的底面与滑块20连接。具体可通过粘接、焊接或其它连接方式进行连接。通过上述结构，能够简化装置结构，便于对滑块20和封堵部30进行加工，提高了加工效率，降低了对零部件的加工成本。
在本实施例中，该导向架10设置有避让孔，滑块20穿设在避让孔内，通过上述结构，使滑块20穿设固定在导向架10内，滑块20的一端位于导向架10的一侧，滑块20的另一端位于导向架10的另一侧，如此便于导向架10驱动滑块20横向移动。
其中，滑块20在腔室44内具有多个连通位置，当滑块20移动至其中一个连通位置时，与其对应的出口通道42与腔室44连通，其它出口通道42通过滑块20与腔室44隔离。在滑块20由其中一个连通位置移动至下一连通位置的过程中，可通过封堵部30对进口通道41进行遮挡，这样可以避免滑块20在移动过程中造成多个出口通道42相互串通，使进口通道41向与其连通的毛细管供压不足的情况发生。在本实施例中，滑块20具有相对的第一连通位置和第二连通位置，滑块20在第一连通位置和第二连通位置之间移动的过程中，封堵部30可对进口通道41进行遮挡。
如图7所示，在本实施例中，阀体40具有低压通道43以及两个出口通道42，低压通道43以及两个出口通道42并排设置在阀体40的一侧，进口通道41设置在阀体40的另一侧，低压通道43位于两个出口通道42之间，进口通道41对应低压通道43设置，封堵部30位于滑块20的中部。将封堵部30设置在滑块20的中部，便于对滑块20进行加工，能够保证加工精度，进而保证封堵部30的遮挡效果。
如图7所示，当滑块20移动至中间位置时，两个出口通道42以及低压通道43相互连通，此时腔室44内压力较低，通过设置封堵部30并在滑块20移动至中部时，利用封堵部30对进口通道41进行遮挡，可以避免或减少进口通道41内的流体泄入至腔室44内，这样能够使进口通道41内的流体流至腔室44的左侧，保证流体有充足压力推动左侧活塞继续向右移动，进而能够驱动导向架10和滑块20继续向右移动，使滑块20的空腔罩设在低压通道43和右侧的出口通道42，并使左侧出口通道42与进口通道41连通时，此时滑块20位于第二连通位置，阀体完成了换向操作。
其中，封堵部30的最大截面尺寸大于或等于进口通道41的尺寸，如此可保证封堵部30的遮挡效果，便于对S1和S2的比值进行控制。
具体的，只要能够使封堵部30在移动至进口通道端部位置处时，对进口通道的流体起到遮挡作用，保证对与进口通道连通的毛细管的流体压力即可。
如图9所示，在本实施例中，进口通道41为圆形通道，进口通道41的直径为d，进口通道41的横截面积S1＝π·(d/2) 2，进口通道41的端部在阀芯组件50的第二侧上的投影与进口通道41的端部之间的距离为X，排气通道60的侧壁面积S2＝π·d·X。
在本实施例中，该换向阀包括电磁四通换向阀。
如图10所示，本申请实施例四提供了一种换向阀，实施例四与实施例三的区别在于，在实施例四中，滑块20的朝向进口通道41的部分表面形成封堵部30。利用滑块20的上表面形成封堵部30，滑块20的结构较为简单，便于对滑块20进行加工，能够降低加工成本。
通过本申请提供的技术方案，其结构简单，方便制造和加工，能够避免阀体出现换向失败的情况，保证阀体能够正常运行。
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 (16)

  1. 一种阀芯组件，其特征在于，所述阀芯组件包括：
    导向架(10)；
    滑块(20)，所述导向架(10)与所述滑块(20)驱动连接，所述滑块(20)的一侧具有空腔，所述滑块(20)的另一侧设置有封堵部(30)，所述封堵部(30)用于封堵进口通道。
  2. 根据权利要求1所述的阀芯组件，其特征在于，所述封堵部(30)的靠近所述进口通道的表面为弧形结构。
  3. 根据权利要求1所述的阀芯组件，其特征在于，所述封堵部(30)的靠近所述进口通道的表面为平面结构。
  4. 根据权利要求1所述的阀芯组件，其特征在于，所述封堵部(30)与所述滑块(20)为一体成型结构。
  5. 根据权利要求1所述的阀芯组件，其特征在于，所述封堵部(30)具有相对设置的顶面和底面，所述封堵部(30)的顶面用于封堵进口通道，所述底面为弧形面，所述底面与所述滑块(20)的上表面相适配，且所述封堵部(30)的底面与所述滑块(20)连接。
  6. 根据权利要求1所述的阀芯组件，其特征在于，所述导向架(10)具有避让孔，所述滑块(20)穿设在所述避让孔内。
  7. 根据权利要求6所述的阀芯组件，其特征在于，所述滑块(20)包括主体(21)和底板(22)，所述主体(21)具有空腔，所述封堵部(30)设置在所述主体(21)的顶部，所述底板(22)环形设置在所述主体(21)的底部，所述底板(22)与所述避让孔配合以限制所述滑块(20)与所述导向架(10)的相对位置，所述底板(22)位于所述导向架(10)的一侧，所述封堵部(30)位于所述导向架(10)的另一侧。
  8. 一种换向阀，其特征在于，所述换向阀包括：
    阀体(40)，所述阀体具有进口通道(41)、多个出口通道(42)以及腔室(44)，所述进口通道(41)与所述出口通道(42)均与所述腔室(44)连通；
    阀芯组件(50)，所述阀芯组件(50)为权利要求1至7中任一项所述的阀芯组件，所述阀芯组件(50)可移动地设置在所述腔室(44)内，所述阀芯组件(50)的滑块(20)的具有空腔的一侧朝向多个所述出口通道(42)设置，所述滑块(20)的具有封堵部的一侧朝向所述进口通道(41)设置，所述封堵部(30)具有封堵所述进口通道的封堵位置和导通所述进口通道的导通位置。
  9. 根据权利要求8所述的换向阀，其特征在于，所述阀体(40)具有两个所述出口通道(42)以及低压通道(43)，两个所述出口通道(42)以及所述低压通道(43)并排设置在所述阀体(40)的一侧，所述进口通道(41)设置在所述阀体(40)的另一侧，所述低压通 道(43)位于两个所述出口通道(42)之间，所述进口通道(41)对应所述低压通道(43)设置，所述封堵部(30)位于所述滑块(20)的中部。
  10. 根据权利要求8所述的换向阀，其特征在于，所述封堵部(30)的截面尺寸大于或等于所述进口通道(41)的尺寸。
  11. 根据权利要求8所述的换向阀，其特征在于，所述封堵部(30)的截面尺寸小于所述进口通道(41)的尺寸。
  12. 根据权利要求8所述的换向阀，其特征在于，所述阀芯组件(50)的朝向多个所述出口通道(42)的一侧为第一侧，所述阀芯组件(50)的朝向所述进口通道(41)的一侧为第二侧，所述进口通道(41)的横截面积为S1，在所述阀芯组件(50)位于所述进口通道(41)的下方时，所述进口通道(41)的端部在所述阀芯组件(50)的第二侧上的投影与所述进口通道(41)的端部之间形成排气通道(60)，所述排气通道(60)的侧壁面积为S2，S1/S2≥1。
  13. 根据权利要求12所述的换向阀，其特征在于，所述进口通道(41)的端部在所述封堵部(30)上的投影与所述进口通道(41)的端部之间形成所述排气通道(60)。
  14. 根据权利要求13所述的换向阀，其特征在于，所述封堵部(30)为遮挡凸台，所述遮挡凸台设置在所述滑块(20)的朝向所述进口通道(41)的一侧。
  15. 根据权利要求13所述的换向阀，其特征在于，所述滑块(20)的朝向所述进口通道(41)的部分表面形成所述封堵部(30)。
  16. 根据权利要求12所述的换向阀，其特征在于，所述进口通道(41)的直径为d，所述进口通道(41)的横截面积S1＝π·(d/2) 2，所述进口通道(41)的端部在所述阀芯组件(50)的第二侧上的投影与所述进口通道(41)的端部之间的距离为X，所述排气通道(60)的侧壁面积S2＝π·d·X。
PCT/CN2021/112125 2020-08-20 2021-08-11 阀芯组件及具有其的换向阀 WO2022037461A1 (zh)

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