WO2013123819A1 - 制冷系统及其球阀 - Google Patents

制冷系统及其球阀 Download PDF

Info

Publication number
WO2013123819A1
WO2013123819A1 PCT/CN2012/088013 CN2012088013W WO2013123819A1 WO 2013123819 A1 WO2013123819 A1 WO 2013123819A1 CN 2012088013 W CN2012088013 W CN 2012088013W WO 2013123819 A1 WO2013123819 A1 WO 2013123819A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
ball
interface end
spool
base
Prior art date
Application number
PCT/CN2012/088013
Other languages
English (en)
French (fr)
Inventor
郑旭锋
Original Assignee
浙江三花股份有限公司
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
Application filed by 浙江三花股份有限公司 filed Critical 浙江三花股份有限公司
Priority to US14/376,888 priority Critical patent/US20150000768A1/en
Publication of WO2013123819A1 publication Critical patent/WO2013123819A1/zh

Links

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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • 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
    • F16K15/00—Check valves
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
    • F16K15/184—Combined check valves and actuated valves
    • F16K15/1848—Check valves combined with valves having a rotating tap or cock
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0663—Packings
    • F16K5/0689—Packings between housing and plug
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]

Definitions

  • the invention relates to the technical field of refrigerant fluid control components, and in particular to a ball valve. Furthermore, the invention relates to a refrigeration system comprising the above described ball valve. Background technique
  • FIG. 1 is a schematic structural view of a ball valve in the prior art
  • FIG. 2 is a schematic view showing a matching structure of a valve stem and a positioning pin of the ball valve of FIG.
  • the ball valve of the prior art is used for a refrigeration system including an indoor unit and an outdoor unit.
  • the ball valve includes a valve body having a valve chamber 1'1 and a first interface end connected to the outdoor unit. And a second interface end 1'2 connected to the indoor unit; a valve ball 3' and a valve stem 4' are arranged in the valve chamber 1 ⁇ , the spool ball 3' is provided with a spool passage 3 ⁇ , and the valve stem 4' can drive the valve
  • the core ball 3' is rotated so that the spool passage 3'1 communicates with the first interface end 2'1 and the second interface end ⁇ 2 or disconnects the two.
  • the valve body includes a valve body ⁇ and a valve seat 2 ′, the valve seat 2 ′ cooperates with the valve body 1 ′ to form a valve cavity 1 ⁇ , and the first interface end 2 ⁇ is opened on the valve seat 2 ′,
  • the second interface end 1'2 is disposed on the valve body 1';
  • the first sealing member 6 ⁇ is disposed between the valve seat 2' and the side of the spool ball 3' to isolate the first interface end 2 ⁇ from the valve chamber 1 ⁇ ,
  • the valve A second seal 6'2 is provided between the body 1' and the other side of the spool ball 3' to isolate the second interface end 1'2 from the valve chamber 1''.
  • the valve body is provided with two positioning bosses 3, and the ball valve is fully opened by the cooperation of the two positioning bosses 3 and the positioning pins 5'.
  • the sealing faces of the first sealing member 6 ⁇ and the second sealing member 6'2 are both spherical surfaces having the same radius of curvature as the radius of curvature of the spool ball 3', and the valve seat 2' is tightened by a certain torque.
  • the first seal 6 ⁇ and the second seal The 6'2 is in a compressed state and fits tightly against the surface of the ball of the spool ball 3' to achieve a seal.
  • the pressure of the refrigerant in 1'1 becomes larger as the temperature increases, but it cannot be discharged, so there is safety.
  • the technical problem to be solved by the present invention is to provide a ball valve.
  • the structural design of the ball valve can avoid excessive pressure in the valve cavity when welding the indoor unit, thereby eliminating safety hazards; on the other hand, when performing pressure leak detection The air in the indoor unit is prevented from entering the first interface end side and mixed with the refrigerant in the outdoor unit, thereby ensuring the cooling performance.
  • another technical problem to be solved by the present invention is to provide a refrigeration system including the above ball valve.
  • the present invention provides a ball valve including a valve body, the valve body having a valve cavity, a first interface end and a second interface end; the valve cavity is provided with a spool ball and a valve stem, The spool ball is provided with a spool passage, and the valve stem can drive the spool ball to rotate, so that the spool passage communicates with the first interface end and the second interface end or disconnects the two; a one-way valve having a predetermined opening pressure is opened between the spool passage and the first interface end, and when the spool ball interrupts communication between the first interface end and the second interface end The one-way valve can unidirectionally pass the spool passage to the first interface end.
  • the one-way valve is disposed on a spherical wall of the spool ball.
  • the spherical wall of the spool ball is provided with a mounting hole for mounting the one-way valve, and an inner side of the mounting hole is provided with a valve port communicating with the spool passage, and the one-way valve can be opened or Close the valve port.
  • the one-way valve includes a base disposed in the mounting hole, a guide rod movable relative to the base, a reset member disposed between the base and the guide rod, and connected to the guide 4 A spool that is dry and used to open or close the valve port.
  • the base includes a base body having an outer diameter smaller than an inner diameter of the mounting hole, and the base body is circumferentially provided with a plurality of support ribs supported on an inner wall of the mounting hole, and a gap of adjacent support ribs Forming a base passage connecting the mounting hole and the first interface end.
  • the base body is provided with a guiding hole, one end of the guiding rod is slidably disposed in the guiding hole, and the other end of the guiding rod is provided with a mounting portion for mounting the valve core;
  • the base body and the circumferential outer portion of the guide rod are supported between the support rib and the mounting portion.
  • the mounting portion is provided with a mounting groove, and the valve core is interference fit or riveted in the mounting groove.
  • an inner annular wall of the mounting hole adjacent to the first interface end side is provided with an annular recess, and the annular groove is provided with a latch for supporting the base.
  • the valve body includes a valve body and a valve seat, the valve seat cooperates with the valve body to form the valve cavity, and the first interface end is opened on the valve seat, the second interface The end is opened on the valve body;
  • a first seal separating the first interface end from the valve cavity is disposed between the valve seat and one side of the spool ball, and the valve body and the other side of the spool ball
  • a second seal is provided between the second interface end and the valve cavity.
  • the present invention also provides a refrigeration system including a room
  • the internal combustion engine system further includes the ball valve according to any one of the preceding claims, wherein the first interface end is connected to the outdoor unit, and the second interface end is connected to the indoor unit.
  • a check valve having a predetermined opening pressure is opened between the spool passage of the ball valve and the first interface end provided by the present invention, and the first interface end is interrupted when the spool ball is interrupted.
  • the one-way valve may unidirectionally pass the spool passage to the first interface end when communicating with the second interface end.
  • the first interface end can be connected to an outdoor unit of the refrigeration system, and the second interface end can be connected to the indoor unit of the refrigeration system.
  • the spool ball When the ball valve is connected to the outdoor unit with its first interface end and is filled with the refrigerant, the spool ball is opened due to the pressure of the refrigerant, so that the first seal and the spool ball are disengaged, thereby causing the refrigerant to pass through the two.
  • the gap flows into the valve chamber, and at this time, since the second seal at one end of the valve body is still in a sealed state, the refrigerant cannot be discharged through the other side and is left in the valve chamber; when the pressure in the valve chamber is outdoor When the pressure in the pipe on one side of the machine reaches equilibrium, the first seal acts as a seal, and the valve cavity is a sealed cavity.
  • the indoor unit side performs the inflation and pressure leak detection, at this time, since the spool ball is pushed open, on the side of the valve body, the second seal and the spool ball are disengaged, thereby causing the air of the indoor unit to pass.
  • the gap enters the valve cavity, because the inflation pressure is generally small (for example, 4 MPa), which is smaller than the predetermined opening pressure, and the outdoor unit side is filled with the refrigerant at this time, and the pressure on the valve chamber and the outdoor unit side is based thereon.
  • the difference is certainly less than the predetermined opening pressure, so that the one-way valve does not open, that is, the mixing of the air in the indoor unit with the refrigerant in the outdoor unit is avoided, thereby ensuring the cooling and heating performance of the system.
  • the structural design of the ball valve provided by the present invention can avoid excessive pressure in the valve cavity when welding the indoor unit, thereby eliminating safety hazards; on the other hand, it can prevent indoor unit when performing pressure leak detection.
  • the air enters the first interface end side and is mixed with the refrigerant in the outdoor unit to ensure the cooling performance.
  • the technical effect of the refrigeration system including the ball valve provided by the present invention is the same as that of the above-described ball valve, and thus will not be described herein.
  • FIG. 1 is a schematic structural view of a ball valve in the prior art
  • Figure 2 is a schematic view showing the cooperation structure of the valve stem and the positioning pin of the ball valve of Figure 1;
  • FIG. 3 is a schematic structural view of a ball valve according to an embodiment of the present invention.
  • Figure 4 is a partial enlarged view of the A portion of the ball valve of Figure 3;
  • Figure 5 is a schematic view showing the structure of the base of the ball valve of Figures 3 and 4.
  • the correspondence between the reference numerals and the component names in FIGS. 1 and 2 is: 1' valve body; 1 ⁇ valve cavity; 1'2 second interface end; 1'3 positioning boss;
  • valve body 11 valve cavity; 12 second interface end;
  • valve seat 21 first interface end
  • valve stem 3 spool ball; 31 spool passage; 32 mounting holes; 321 annular groove; 33 valve port; 4 valve stem;
  • the core of the invention provides a ball valve.
  • the structural design of the ball valve can avoid excessive pressure in the valve cavity when welding the indoor unit, thereby eliminating safety hazards; on the other hand, the indoor unit can be prevented when performing pressure leak detection.
  • the air in the air enters the first interface end side and is mixed with the refrigerant in the outdoor unit to ensure the cooling performance.
  • another core of the present invention is to provide a refrigeration system including the above ball valve.
  • FIG. 3 is a schematic structural view of a ball valve according to an embodiment of the present invention
  • FIG. 4 is a partial enlarged view of a portion A of the ball valve of FIG.
  • the ball valve provided by the present invention comprises a valve body having a valve chamber 11, a first interface end 21 and a second interface end 12; a valve core is arranged in the valve chamber 11 Ball 3 and valve stem 4, the spool ball 3 is provided with a spool passage 31, and the valve stem 4 can drive the spool ball 3 to rotate, so that the spool passage 31 communicates with the first interface end 21 and the second interface end 12 or both Interrupted communication.
  • the first interface end 21 can be coupled to an outdoor unit of the refrigeration system
  • the second interface end 12 can be coupled to an indoor unit of the refrigeration system.
  • the valve body includes a valve body 1 and a valve seat 2, the valve seat 2 cooperates with the valve body 1 to form a valve cavity 11, and the first interface end 21 is opened on the valve seat 2, and the second interface end 12 is opened in the valve body 1.
  • a first sealing member 61 Between the valve seat 2 and one side of the spool ball 3 is provided with a first sealing member 61 separating the first interface end 21 from the valve chamber 11, and between the valve body 1 and the other side of the spool ball 3 The second interface end 12 is isolated from the second seal 62 of the valve chamber 11.
  • a check valve 5 having a predetermined opening pressure is opened between the spool passage 31 and the first interface end 21, and when the spool ball 3 interrupts the first interface end 21 and The one-way valve 5 of the second interface end 12 allows the spool passage 31 to be unidirectionally communicated to the first interface end 21.
  • the check valve 5 may be provided on the spherical wall of the spool ball 3.
  • a predetermined opening pressure for example, 5 MPa
  • the check valve 5 is opened, so that the valve chamber 11 is relieved, and finally the pressure on both sides is maintained. Balance, thus eliminating security risks.
  • the inflation pressure is generally small (for example, 4 MPa), it is smaller than the predetermined opening pressure, and the outdoor unit side is filled with the refrigerant at this time, on the basis of which the valve chamber 11 and the outdoor unit are The pressure difference on the side is definitely less than the predetermined opening pressure, so that the one-way valve 5 does not open, that is, the mixing of the air in the indoor unit with the refrigerant in the outdoor unit is avoided, thereby ensuring the cooling and heating performance of the system.
  • the predetermined opening pressure of the one-way valve 5 is greater than the pressure difference between the inflation pressure in the valve chamber 11 and the outdoor unit side during the pressure leak detection, that is, when the inflation leak detection is performed, the one-way valve 5
  • the predetermined opening pressure should not be too large, otherwise the check valve 5 cannot be opened when the pressure in the valve chamber 11 exceeds the safe value, and a safety accident still occurs.
  • check valve 5 of any configuration can achieve the object of the present invention as long as it can provide the predetermined opening pressure, and thus is within the protection scope of the present invention.
  • valve body is a left and right split structure, including the valve seat 2 and the valve body 1, but the invention is not limited thereto; any valve body structure,
  • the upper and lower split structures as long as the structure of the spool ball 3, the valve stem 4 and the two seals can be installed therein, are all within the scope of the present invention.
  • a one-way valve 5 of a structure can be specifically designed; for example, please refer to FIG. 4 and FIG. 5, FIG. 4 is a partial enlarged view of the A portion of the ball valve of FIG. 3; FIG. 5 is a ball valve of FIG. 3 and FIG. Schematic diagram of the base.
  • the spherical wall of the spool ball 3 is provided with a mounting hole 32 for mounting the check valve 5, and the inner side of the mounting hole 32 is provided with a valve port 33 communicating with the spool passage 31, and the check valve 5 is Open or close the valve port 33.
  • the check valve 5 opens the valve port 33.
  • the check valve 5 closes the valve port. 33.
  • the check valve 5 includes a base 51 disposed in the mounting hole 32, a guide rod 52 movable relative to the base 51, and a reset member 53 disposed between the base 51 and the guide rod 52,
  • the valve core 54 is connected to the guide rod 52 and used to open or close the valve port 33; and the base 51 is provided with a base passage 511 that communicates with the mounting hole 32 and the first interface end 21.
  • the base 51 includes a base body 512 having an outer diameter smaller than the inner diameter of the mounting hole 32.
  • the base body 512 is provided with a plurality of support ribs 513 supported on the inner wall of the mounting hole 32 in the circumferential direction.
  • the base 51 is supported by the support rib 513 inside the mounting hole 32, and the gap between the adjacent support ribs 513 forms a base passage 511 that communicates with the mounting hole 32 and the first interface end 21, and enters the mounting hole 32.
  • the refrigerant can flow to the first interface end 21 through the base channel 511.
  • the inclined hole connecting the mounting hole 32 and the first interface end 21 may be directly formed on the spherical wall of the spool ball 3, and the structural design is not required to be opened on the base 51.
  • the base passage 511, so that the structure of the base 51 can be tubular, can reduce the processing cost.
  • the base body 512 is provided with a guiding hole 514. As shown in FIG. 4, one end of the guiding rod 52 is slidably disposed in the guiding hole 514, and the other end is installed.
  • the mounting portion 521 of the valve body 54; the reset member 53 is fitted over the circumferential outer portion of the base body 512 and the guide rod 52, and is supported between the support rib 513 and the mounting portion 521.
  • the cooperation between the guide hole 514 and the guide rod 52 can make the guide rod 52 move smoothly without sloshing, and on the one hand, ensure the stability of the valve core 54 when opening the valve port 33, and on the other hand, It is ensured that the spool 54 seals the reliability of the valve port 33.
  • the reset member 53 is provided in a space between the support rib 513 and the mounting portion 521, thereby making the structure compact.
  • the mounting portion 521 is provided with a mounting groove 521a, and the spool 54 is interference fit or riveted into the mounting groove 521a.
  • the present invention further provides a refrigeration system including an indoor unit and an outdoor unit; the refrigeration system further includes a ball valve in any of the above technical solutions, and the first interface end 21 is connected to the outdoor unit, and the second interface end 12 is indoors. Machine connection.
  • Other parts of the refrigeration system can be referred to the prior art and will not be developed in this paper.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Taps Or Cocks (AREA)

Abstract

一种球阀，包括阀体，所述阀体具有阀腔（11）、第一接口端（21）及第二接口端（12）；所述阀腔（11）内设有阀芯球（3）和阀杆（4），所述阀芯球（3）设有阀芯通道（31），所述阀芯通道（31）与所述第一接口端（21）之间开设有具有预定打开压力的单向阀（5），当所述阀芯球（3）与所述第一接口端（21）断开并且与所述第二接口端（12）连通时所述单向阀（5）可使所述阀芯通道（31）向所述第一接口端（21）单向导通。此外，还公开了一种包括上述球阀的制冷系统。

Description

制冷系统及其球阀 本申请要求于 2012 年 2 月 21 日提交中国专利局、 申请号为 201210039944.0、 发明名称为 "制冷系统及其球阀" 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
本发明涉及冷媒流体控制部件技术领域，特别涉及一种球阀。此外， 本发明还涉及一种包括上述球阀的制冷系统。 背景技术
球阀作为阀门开关元件， 被广泛使用于制冷系统中， 用来对冷媒进 行截止和导通。 具体地， 请参考图 1和图 2, 图 1为现有技术中一种球 阀的结构示意图；图 2为图 1中球阀的阀杆与定位销的配合结构示意图。
如图 1所示， 该现有技术中的球阀， 用于包括室内机和室外机的制 冷系统， 球阀包括阀体， 阀体具有阀腔 1'1、 与室外机连接的第一接口端 2Ί及与室内机连接的第二接口端 1'2； 阀腔 1Ί 内设有阀芯球 3'和阀杆 4', 阀芯球 3'设有阀芯通道 3Ί , 阀杆 4'可驱动阀芯球 3'转动， 以便阀芯 通道 3'1连通第一接口端 2'1和第二接口端 Γ2或使得二者中断连通。
具体地， 如图 1所示， 阀体包括阀本体 Γ和阀座 2', 阀座 2'与阀本 体 1'配合形成阀腔 1Ί , 并第一接口端 2Ί开设于阀座 2'上， 第二接口端 1'2设于阀本体 1'上； 阀座 2'与阀芯球 3'的一侧之间设有隔离第一接口端 2Ί与阀腔 1Ί的第一密封件 6Ί ,阀本体 1'与阀芯球 3'的另一侧之间设有 隔离第二接口端 1'2与阀腔 1Ί的第二密封件 6'2。 如图 2所示， 阀本体 Γ上设有两个定位凸台 Γ3 , 通过该两个定位凸台 Γ3和定位销 5'的配合 对球阀进行全开限位。 在上述结构中， 第一密封件 6Ί和第二密封件 6'2 的密封面均为球面， 其曲率半径与阀芯球 3'的曲率半径相同， 将阀座 2' 通过一定的扭矩拧紧于阀本体 1'上， 使得第一密封件 6Ί和第二密封件 6'2处于压缩状态， 紧紧贴合在阀芯球 3'的球表面上， 从而实现密封。 在上述结构中， 当球阀以其第一接口端 2'1 连接室外机并充入冷媒 时， 由于冷媒的压力， 会将阀芯球 3'顶开， 使得第一密封件 6Ί和阀芯 球 3'之间发生脱离， 从而导致冷媒通过两者之间的间隙流向阀腔 1Ί中， 而此时由于阀本体 1'一端的第二密封件 6'2依然处于密封状态， 故冷媒 无法通过另一侧排出， 而被留在阀腔 1Ί 中； 当球阀再以其第二接口端 2Ί焊接室内机时， 由于在焊接过程中没有冷却保护措施， 因而导致阀腔
1'1内冷媒的压力随着温度的升高而变大，但又无法排出，从而存在安全
|刍
目前， 在现有技术中， 为防止阀腔 1Ί 内压力过高， 消除上述安全 隐患， 在阀芯球 3'的球面壁上开设有一个小孔， 并且该小孔靠近阀座 2' 一端， 用于卸出阀腔 1'1 内的高压， 从而消除了安全隐患。 但是， 当第 二接口端 Γ2焊接上室内机后， 需要在室内机一侧进行加压检漏， 此时 由于阀芯球 3'会被顶开， 在阀本体 1'一侧， 第二密封件 6'2与阀芯球 3' 之间发生脱离， 从而导致室内机的空气通过间隙进入阀腔 1Ί 内， 该空 气进而通过卸压小孔流入室外机中与冷媒混合， 从而影响系统的制冷或 制热功能。 发明内容
本发明要解决的技术问题为提供一种球阀， 该球阀的结构设计一方 面能够避免焊接室内机时阀腔内压力过高， 从而消除了安全隐患； 另一 方面当进行加压检漏时能够防止室内机中的空气进入第一接口端一侧与 室外机中的冷媒混合， 从而保证制冷性能。 此外， 本发明另一个要解决 的技术问题为提供一种包括上述球阀的制冷系统。
为解决上述技术问题， 本发明提供一种球阀包括阀体， 所述阀体具 有阀腔、 第一接口端及第二接口端； 所述阀腔内设有阀芯球和阀杆， 所 述阀芯球设有阀芯通道， 所述阀杆可驱动所述阀芯球转动， 以便所述阀 芯通道连通所述第一接口端和所述第二接口端或使得二者中断连通； 所述阀芯通道与所述第一接口端之间开设有具有预定打开压力的单 向阀， 并当所述阀芯球中断所述第一接口端和所述第二接口端的连通时 所述单向阀可使所述阀芯通道向所述第一接口端单向导通。
优选地， 所述单向阀设置于所述阀芯球的球面壁上。
优选地， 所述阀芯球的球面壁上开设有安装所述单向阀的安装孔， 该安装孔的内侧设有与所述阀芯通道连通的阀口， 所述单向阀可开启或 关闭所述阀口。
优选地， 所述单向阀包括设于安装孔中的底座、 可相对于所述底座 运动的导向杆、 设于所述底座与所述导向杆之间的复位部件、 连接于所 述导向 4干上并用于开启或关闭所述阀口的阀芯。
优选地， 所述底座包括外径小于所述安装孔的内径的底座本体， 所 述底座本体沿周向设有多个支撑于所述安装孔的内壁上的支撑筋， 并相 邻的支撑筋的间隙形成连通所述安装孔与所述第一接口端的底座通道。
优选地， 所述底座本体上开设有导向孔， 所述导向杆的一端可滑动 设于该导向孔中， 其另一端设有安装所述阀芯的安装部； 所述复位部件 套装于所述底座本体和所述导向杆的周向外部， 并支撑于所述支撑筋与 所述安装部之间。
优选地， 所述安装部上设有安装槽， 所述阀芯过盈配合或铆接于所 述安装槽中。
优选地， 所述安装孔靠近所述第一接口端一侧的内壁上设有环形凹 槽， 所述环形凹槽设有支撑所述底座的卡圏。
优选地， 所述阀体包括阀本体和阀座， 所述阀座与所述阀本体配合 形成所述阀腔， 并所述第一接口端开设于所述阀座上， 所述第二接口端 开设于所述阀本体上；
所述阀座与所述阀芯球的一侧之间设有隔离所述第一接口端与所述 阀腔的第一密封件， 所述阀本体与所述阀芯球的另一侧之间设有隔离所 述第二接口端与所述阀腔的第二密封件。
此外， 为解决上述技术问题， 本发明还提供一种制冷系统， 包括室 内机和室外机； 所述制冷系统还包括上述任一项所述的球阀， 并所述第 一接口端与所述室外机连接， 所述第二接口端与所述室内机连接。
在现有技术的基础上， 本发明所提供的球阀的阀芯通道与第一接口 端之间开设有具有预定打开压力的单向阀， 并当所述阀芯球中断所述第 一接口端和所述第二接口端的连通时所述单向阀可使所述阀芯通道向所 述第一接口端单向导通。 具体地， 该第一接口端可以与制冷系统的室外 机连接， 该第二接口端可与制冷系统的室内机连接。
当球阀以其第一接口端连接室外机并充入冷媒时，由于冷媒的压力， 阀芯球被顶开， 使得第一密封件和阀芯球之间发生脱离， 从而导致冷媒 通过两者之间的间隙流入阀腔中， 而此时由于阀本体一端的第二密封件 依然处于密封状态， 故冷媒无法通过另一侧排出， 而被留在阀腔中； 当 阀腔内的压力与室外机一侧管道内的压力达到平衡时， 第一密封件又起 到密封作用， 此时阀腔为一个密封腔。 当球阀在其第二接口端焊接室内 机时， 此时根据 PV/T=常数， 由于阀腔的体积保持不变， 因而随着温度 的升高， 阀腔内的压力增大， 当该阀腔内的压力与第一接口端一侧的压 力差达到所述预定打开压力 （比如 5MPa ) 时， 单向阀打开， 从而使得 阀腔卸压， 最终使得两侧的压力保持平衡， 从而消除了安全隐患。
当室内机一侧进行充气加压检漏时， 此时由于阀芯球会被顶开， 在 阀本体一侧， 第二密封件与阀芯球之间发生脱离， 从而导致室内机的空 气通过间隙进入阀腔内， 由于充气压力一般较小 （比如 4MPa ), 其小于 所述预定打开压力， 并且室外机一侧此时已经充有冷媒， 在此基础上阀 腔与室外机一侧的压力差肯定小于所述预定打开压力， 因而单向阀不会 打开， 亦即避免了室内机中的空气与室外机中的冷媒发生混合， 从而保 证了系统的制冷制热性能。
综上所述， 本发明所提供的球阀的结构设计一方面能够避免焊接室 内机时阀腔内压力过高， 从而消除了安全隐患； 另一方面当进行加压检 漏时能够防止室内机中的空气进入第一接口端一侧与室外机中的冷媒混 合， 从而保证制冷性能。 此外，本发明所提供的包括上述球阀的制冷系统，其技术效果与上述 球阀的技术效果相同， 因而在此不再赘述。 附图说明
图 1为现有技术中一种球阀的结构示意图；
图 2为图 1中球阀的阀杆与定位销的配合结构示意图；
图 3为本发明一种实施例中球阀的结构示意图；
图 4为图 3中球阀的 A部位的局部放大图；
图 5为图 3和图 4中球阀的底座的结构示意图。 其中， 图 1和图 2中附图标记与部件名称之间的对应关系为： 1'阀本体； 1Ί阀腔； 1'2第二接口端； 1'3定位凸台；
2'阀座； 2Ί第一接口端；
3'阀芯球； 3Ί阀芯通道；
4'阀軒；
5'定位销；
6'1第一密封件； 6'2第二密封件。 图 3至图 5中附图标记与部件名称之间的对应关系为：
1阀本体； 11阀腔； 12第二接口端；
2阀座； 21第一接口端；
3阀芯球； 31阀芯通道； 32安装孔； 321环形凹槽； 33阀口； 4阀杆；
5单向阀；
51底座； 511底座通道； 512底座本体； 513支撑筋； 514导向孔；
52导向杆； 521安装部； 521a安装槽；
53复位部件； 55卡圏；
61第一密封件； 62第二密封件。 具体实施方式
本发明的核心为提供一种球阀， 该球阀的结构设计一方面能够避免 焊接室内机时阀腔内压力过高， 从而消除了安全隐患； 另一方面当进行 加压检漏时能够防止室内机中的空气进入第一接口端一侧与室外机中的 冷媒混合， 从而保证制冷性能。 此外， 本发明另一个核心为提供一种包 括上述球阀的制冷系统。
为了使本领域的技术人员更好地理解本发明的技术方案， 下面结合 附图和具体实施例对本发明作进一步的详细说明。
请参考图 3和图 4, 图 3为本发明一种实施例中球阀的结构示意图； 图 4为图 3中球阀的 A部位的局部放大图。
在一种实施例中， 如图 3所示， 本发明所提供的球阀包括阀体， 阀 体具有阀腔 11、第一接口端 21及第二接口端 12; 阀腔 11内设有阀芯球 3和阀杆 4 , 阀芯球 3设有阀芯通道 31 , 阀杆 4可驱动阀芯球 3转动， 以便阀芯通道 31连通第一接口端 21和第二接口端 12或使得二者中断连 通。 具体地， 该第一接口端 21可以与制冷系统的室外机连接， 该第二接 口端 12可与制冷系统的室内机连接。
具体地， 阀体包括阀本体 1和阀座 2 , 阀座 2与阀本体 1配合形成 阀腔 11 , 并第一接口端 21开设于阀座 2上， 第二接口端 12开设于阀本 体 1上； 阀座 2与阀芯球 3的一侧之间设有隔离第一接口端 21与阀腔 11的第一密封件 61 ,阀本体 1与阀芯球 3的另一侧之间设有隔离第二接 口端 12与阀腔 11的第二密封件 62。
在上述结构的基础上， 如图 3所示， 阀芯通道 31与第一接口端 21 之间开设有具有预定打开压力的单向阀 5 , 并当阀芯球 3中断第一接口 端 21和第二接口端 12的连通时单向阀 5可使阀芯通道 31向第一接口端 21单向导通。 具体地， 该单向阀 5可以设于阀芯球 3的球面壁上。 当球阀以其第一接口端 21连接室外机并充入冷媒时，由于冷媒的压 力， 阀芯球 3被顶开，使得第一密封件 61和阀芯球 3之间发生脱离， 从 而导致冷媒通过两者之间的间隙流入阀腔 11 中， 而此时由于阀本体 1 一端的第二密封件 62依然处于密封状态， 故冷媒无法通过另一侧排出， 而被留在阀腔 11中； 当阀腔 11内的压力与室外机一侧管道内的压力达 到平衡时，第一密封件 61又起到密封作用，此时阀腔 11为一个密封腔。 当球阀在其第二接口端 12焊接室内机时，此时根据 PV/T=常数， 由于阀 腔 11的体积保持不变， 因而随着温度的升高， 阀腔 11内的压力增大， 当该阀腔 11内的压力与第一接口端 21—侧的压力差达到预定打开压力 (比如 5MPa ) 时， 单向阀 5打开， 从而使得阀腔 11卸压， 最终使得两 侧的压力保持平衡， 从而消除了安全隐患。
当室内机一侧进行充气加压检漏时， 此时由于阀芯球 3会被顶开， 在阀本体 1一侧第二密封件 62与阀芯球 3之间发生脱离，从而导致室内 机的空气通过间隙进入阀腔 11内，由于充气压力一般较小（比如 4MPa ), 其小于预定打开压力， 并且室外机一侧此时已经充有冷媒， 在此基础上 阀腔 11 与室外机一侧的压力差肯定小于预定打开压力， 因而单向阀 5 不会打开， 亦即避免了室内机中的空气与室外机中的冷媒发生混合， 从 而保证了系统的制冷制热性能。
需要说明的是，单向阀 5的预定打开压力要大于加压检漏时阀腔 11 内的充气压力与室外机一侧的压力差， 亦即当进行充气检漏时， 该单向 阀 5不能打开； 此外， 该预定打开压力也不能太大， 否则阀腔 11内的压 力突破安全值时仍不能打开单向阀 5, 此时仍然会发生安全事故。
需要说明的是， 任一种结构的单向阀 5, 只要能够具备上述预定打 开压力， 就能够实现本发明的目的， 因而均在本发明的保护范围之内。
此外， 还需要说明的是， 在本发明中， 作为一种举例， 阀体为左右 分体结构， 包括阀座 2和阀本体 1 , 但是本发明对此不限制； 任一种阀 体结构， 比如是上下分体结构， 只要能够在其内部安装阀芯球 3、 阀杆 4 和两个密封件等结构， 就均应该在本发明的保护范围之内。 具体地， 可以具体设计一种结构的单向阀 5; 比如， 请参考图 4和 图 5 , 图 4为图 3中球阀的 A部位的局部放大图； 图 5为图 3和图 4中 球阀的底座的结构示意图。
如图 4所示，阀芯球 3的球面壁上开设有安装单向阀 5的安装孔 32, 该安装孔 32的内侧设有与阀芯通道 31连通的阀口 33 ,单向阀 5可开启 或关闭阀口 33。 当第一接口端 21和阀芯通道 31的压力差大于预定开打 压力时， 单向阀 5打开该阀口 33 , 当上述两侧压力差小于预定开打压力 时， 单向阀 5关闭该阀口 33。
具体地， 如图 4所示， 单向阀 5包括设于安装孔 32中的底座 51、 可相对于底座 51运动的导向杆 52、 设于底座 51与导向杆 52之间的复 位部件 53、连接于导向杆 52上并用于开启或关闭阀口 33的阀芯 54;并， 底座 51上设有连通安装孔 32与第一接口端 21的底座通道 511。
在上述结构中， 当两侧的压力差大于预定打开压力时， 导向杆 52 和阀芯 54向左侧运动， 复位部件 53被压缩， 即， 导向杆 52向靠近底座 51的方向运动； 此时， 阀腔 11内的高压冷媒通过阀口 33进入安装孔 32 中。
具体地，在上述技术方案中，可以对底座 51的结构做出设计。比如， 如图 5所示， 底座 51包括外径小于安装孔 32的内径的底座本体 512, 底座本体 512沿周向设有多个支撑于安装孔 32的内壁上的支撑筋 513。 在该种结构中， 底座 51通过支撑筋 513支撑于安装孔 32的内部， 同时 相邻的支撑筋 513的间隙形成连通安装孔 32与第一接口端 21的底座通 道 511 , 进入安装孔 32内的冷媒可以通过该底座通道 511流向第一接口 端 21。 当然， 作为底座通道 511的一种替代方案， 也可以直接在阀芯球 3的球面壁上开设连通安装孔 32与第一接口端 21的斜孔， 该种结构设 计由于不用在底座 51上开设底座通道 511 , 因而底座 51结构可以筒化， 能够降低加工成本。
进一步地， 如图 5所示， 底座本体 512上开设有导向孔 514; 如图 4 所示，导向杆 52的一端可滑动设于该导向孔 514中，其另一端设有安装 阀芯 54的安装部 521 ; 复位部件 53套装于底座本体 512和导向杆 52的 周向外部， 并支撑于支撑筋 513与安装部 521之间。
在上述结构中，导向孔 514与导向杆 52之间的配合作用，可以使得 导向杆 52运动平稳， 不会发生晃动， 一方面保证了阀芯 54开启阀口 33 时的稳定性， 另一方面保证阀芯 54密封阀口 33的可靠性。 此外， 充分 利用了支撑筋 513与安装部 521之间的空间设置复位部件 53 , 因而使得 结构比较紧凑。
在上述技术方案中，可以对阀芯 54的安装结构做出具体设计。比如， 如图 4所示， 安装部 521上设有安装槽 521a, 阀芯 54过盈配合或铆接 于安装槽 521a中。
在上述技术方案中，对于底座 51的支撑结构可以做出具体设计。 比 如， 如图 4所示， 安装孔 32靠近第一接口端 21—侧的内壁上设有环形 凹槽 321 , 环形凹槽 321设有支撑底座 51的卡圏 55。 此外， 本发明还提供一种制冷系统， 包括室内机和室外机； 制冷系 统还包括上述任一种技术方案中的球阀， 并第一接口端 21 与室外机连 接，第二接口端 12与室内机连接。该制冷系统的其他部分可以参照现有 技术， 本文不再展开。
以上对本发明所提供的一种制冷系统及其球阀进行了详细介绍。 本 例的说明只是用于帮助理解本发明的方法及其核心思想。 应当指出， 对 于本技术领域的普通技术人员来说， 在不脱离本发明原理的前提下， 还 可以对本发明进行若干改进和修饰， 这些改进和修饰也落入本发明权利 要求的保护范围内。

Claims

权 利 要 求
1、 一种球阀， 包括阀体， 所述阀体具有阀腔、 第一接口端及第二接 口端； 所述阀腔内设有阀芯球和阀杆， 所述阀芯球设有阀芯通道， 所述 阀杆可驱动所述阀芯球转动， 以便所述阀芯通道连通所述第一接口端和 所述第二接口端， 或使得二者中断连通； 其特征在于，
所述阀芯通道与所述第一接口端之间开设有具有预定打开压力的单 向阀， 并当所述阀芯球中断所述第一接口端和所述第二接口端的连通时 所述单向阀可使所述阀芯通道向所述第一接口端单向导通。
2、如权利要求 1所述的球阀， 其特征在于， 所述单向阀设置于所述 阀芯球的球面壁上。
3、如权利要求 2所述的球阀， 其特征在于， 所述阀芯球的球面壁上 开设有安装所述单向阀的安装孔， 该安装孔的内侧设有与所述阀芯通道 连通的阀口， 所述单向阀可开启或关闭所述阀口。
4、如权利要求 3所述的球阀， 其特征在于， 所述单向阀包括设于安 装孔中的底座、 可相对于所述底座运动的导向杆、 设于所述底座与所述 导向杆之间的复位部件、 连接于所述导向杆上并用于开启或关闭所述阀 口的阀芯。
5、如权利要求 4所述的球阀， 其特征在于， 所述底座包括外径小于 所述安装孔的内径的底座本体， 所述底座本体沿周向设有多个支撑于所 述安装孔的内壁上的支撑筋， 并相邻的支撑筋的间隙形成连通所述安装 孔与所述第一接口端的底座通道。
6、如权利要求 5所述的球阀， 其特征在于， 所述底座本体上开设有 导向孔， 所述导向杆的一端可滑动设于该导向孔中， 其另一端设有安装 所述阀芯的安装部； 所述复位部件套装于所述底座本体和所述导向杆的 周向外部， 并支撑于所述支撑筋与所述安装部之间。
7、如权利要求 6所述的球阀， 其特征在于， 所述安装部上设有安装 槽， 所述阀芯过盈配合或铆接于所述安装槽中。
8、如权利要求 3至 7任一项所述的球阀， 其特征在于， 所述安装孔 靠近所述第一接口端一侧的内壁上设有环形凹槽， 所述环形凹槽设有支 撑所述底座的卡圏。
9、如权利要求 1至 7任一项所述的球阀， 其特征在于， 所述阀体包 括阀本体和阀座， 所述阀座与所述阀本体配合形成所述阀腔， 并所述第 一接口端开设于所述阀座上， 所述第二接口端开设于所述阀本体上； 所述阀座与所述阀芯球的一侧之间设有隔离所述第一接口端与所述 阀腔的第一密封件， 所述阀本体与所述阀芯球的另一侧之间设有隔离所 述第二接口端与所述阀腔的第二密封件。
10、 一种制冷系统， 包括室内机和室外机； 其特征在于， 所述制冷 系统还包括如权利要求 1至 9任一项所述的球阀， 并所述第一接口端与 所述室外机连接， 所述第二接口端与所述室内机连接。
PCT/CN2012/088013 2012-02-21 2012-12-31 制冷系统及其球阀 WO2013123819A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/376,888 US20150000768A1 (en) 2012-02-21 2012-12-31 Refrigeration system and ball valve thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210039944.0A CN103256410B (zh) 2012-02-21 2012-02-21 制冷系统及其球阀
CN201210039944.0 2012-02-21

Publications (1)

Publication Number Publication Date
WO2013123819A1 true WO2013123819A1 (zh) 2013-08-29

Family

ID=48960527

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/088013 WO2013123819A1 (zh) 2012-02-21 2012-12-31 制冷系统及其球阀

Country Status (3)

Country Link
US (1) US20150000768A1 (zh)
CN (1) CN103256410B (zh)
WO (1) WO2013123819A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170002934A1 (en) * 2013-11-29 2017-01-05 Total Marketing Services Isolation valve with a dead chamber

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150101687A1 (en) * 2013-10-16 2015-04-16 Hamilton Sundstrand Corporation Liquid Valve Design with internal Check Valve
JP6341363B2 (ja) * 2014-01-31 2018-06-13 株式会社フジキン ボール弁
CN103791116A (zh) * 2014-02-24 2014-05-14 张周卫 Lng球阀
CN106678387A (zh) * 2016-08-05 2017-05-17 维都利阀门有限公司 智能调节多功能球阀
KR101890412B1 (ko) * 2017-06-05 2018-10-01 최영표 자동배수기능을 갖는 드레인 밸브
CN109323023A (zh) * 2018-10-30 2019-02-12 山西潞安广源工贸有限公司 多用途球阀
CN109764144B (zh) * 2019-02-20 2020-06-12 特技阀门集团有限公司 一种双模式节流球阀
WO2021240494A1 (en) * 2020-05-27 2021-12-02 Habonim Industrial Valves & Actuators Ltd. Bi-flow cryogenic firesafe floating ball valve

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1435367A (en) * 1973-09-18 1976-05-12 Iv Pressure Controllers Ltd Valves
JPS54161039U (zh) * 1978-02-02 1979-11-10
US4365648A (en) * 1979-10-11 1982-12-28 Wolfgang Grothe Check valve
US5586579A (en) * 1995-11-15 1996-12-24 Martin Marietta Corporation Combination ball valve and pressure relief valve assembly
JP2000179713A (ja) * 1998-12-14 2000-06-27 Ebara Corp バルブ装置
CN1536254A (zh) * 2003-04-10 2004-10-13 宏晟兴精密工业股份有限公司 具止挡装置的球阀阀门
CN1563757A (zh) * 2004-03-26 2005-01-12 卓旦春 止回球阀
CN201116616Y (zh) * 2007-11-27 2008-09-17 浙江盾安阀门有限公司 一种球阀中使用的密封球
CN201258978Y (zh) * 2008-09-08 2009-06-17 诸暨市恒森冷热器材有限公司 制冷球阀
CN102829212A (zh) * 2012-08-20 2012-12-19 天津祥嘉流体控制系统有限公司 一种超低温球阀

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3101740A (en) * 1960-07-19 1963-08-27 Gen Controls Co Ball valve structure
BE788700A (fr) * 1971-09-13 1973-01-02 Wilmot Breeden Ltd Perfectionnements aux robinets a tournant ou a boisseau
JPH0520933Y2 (zh) * 1987-05-21 1993-05-28
GB2226385A (en) * 1988-11-19 1990-06-27 Shipham & Co Ltd A ball valve
DE4127114A1 (de) * 1991-08-16 1993-02-18 Suedmo Schleicher Ag Kugelhahn zur sicheren trennung feindlicher fluessigkeiten
US7228696B2 (en) * 2005-06-27 2007-06-12 Geofurnace Development Inc. Hybrid heating and cooling system
CN200971978Y (zh) * 2006-11-24 2007-11-07 曾品其 双阻尼止回式双活塞效应球阀
CN201071946Y (zh) * 2007-08-06 2008-06-11 山东力诺瑞特新能源有限公司 一种止回球阀
CN201133495Y (zh) * 2007-12-28 2008-10-15 山东力诺瑞特新能源有限公司 一种三通止回球阀阀芯
CN201992113U (zh) * 2011-03-25 2011-09-28 浙江三花股份有限公司 一种球阀、其定位组件以及使用该球阀的制冷系统

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1435367A (en) * 1973-09-18 1976-05-12 Iv Pressure Controllers Ltd Valves
JPS54161039U (zh) * 1978-02-02 1979-11-10
US4365648A (en) * 1979-10-11 1982-12-28 Wolfgang Grothe Check valve
US5586579A (en) * 1995-11-15 1996-12-24 Martin Marietta Corporation Combination ball valve and pressure relief valve assembly
JP2000179713A (ja) * 1998-12-14 2000-06-27 Ebara Corp バルブ装置
CN1536254A (zh) * 2003-04-10 2004-10-13 宏晟兴精密工业股份有限公司 具止挡装置的球阀阀门
CN1563757A (zh) * 2004-03-26 2005-01-12 卓旦春 止回球阀
CN201116616Y (zh) * 2007-11-27 2008-09-17 浙江盾安阀门有限公司 一种球阀中使用的密封球
CN201258978Y (zh) * 2008-09-08 2009-06-17 诸暨市恒森冷热器材有限公司 制冷球阀
CN102829212A (zh) * 2012-08-20 2012-12-19 天津祥嘉流体控制系统有限公司 一种超低温球阀

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170002934A1 (en) * 2013-11-29 2017-01-05 Total Marketing Services Isolation valve with a dead chamber
US10012317B2 (en) * 2013-11-29 2018-07-03 Total Marketing Services Isolation valve with a dead chamber

Also Published As

Publication number Publication date
CN103256410A (zh) 2013-08-21
CN103256410B (zh) 2016-10-05
US20150000768A1 (en) 2015-01-01

Similar Documents

Publication Publication Date Title
WO2013123819A1 (zh) 制冷系统及其球阀
JP6475254B2 (ja) バルブ
WO2020015350A1 (zh) 充注阀、空调系统及电动车
WO2017156831A1 (zh) 燃气比例阀
WO2014089953A1 (zh) 电子膨胀阀
WO2018135102A1 (ja) 流路切換弁及びその組立方法
CN106286910B (zh) 一种用于高温高压气体的直角式单向阀
WO2017181869A1 (zh) 一种调温器及一种温控系统
KR20170110098A (ko) 차단 밸브
WO2010028526A1 (zh) 具有喷气装置的旋转式压缩机
WO2013159509A1 (zh) 一种带有单向控制功能的热力膨胀阀
CN107101012B (zh) 一种燃气管道防火旋塞阀门
CN107366750B (zh) 一种制冷系统用截止阀
US20060272706A1 (en) Vacuum eliminator
KR20180075780A (ko) 밸브 조립체
US11280427B2 (en) Vacuum safety valve
WO2018121418A1 (zh) 膨胀开关阀
WO2021073230A1 (zh) 气液分离器及压缩系统
TW201336708A (zh) 油箱用之鎖蓋裝置
CN105485979B (zh) 热力膨胀阀和具有该热力膨胀阀的热泵系统
WO2012095011A1 (zh) 热力膨胀阀及包括该热力膨胀阀的制冷系统
TWI495814B (zh) Two-way valve
KR20060102229A (ko) 가스밸브 자동폐쇄장치
CN113294545B (zh) 管接塞门、管接塞门的组装方法及轨道车辆
CN102466056A (zh) 一种球阀

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12869428

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 14376888

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12869428

Country of ref document: EP

Kind code of ref document: A1