WO2008031289A1 - Vanne de détente électronique pour système de réfrigération - Google Patents

Vanne de détente électronique pour système de réfrigération Download PDF

Info

Publication number
WO2008031289A1
WO2008031289A1 PCT/CN2006/003215 CN2006003215W WO2008031289A1 WO 2008031289 A1 WO2008031289 A1 WO 2008031289A1 CN 2006003215 W CN2006003215 W CN 2006003215W WO 2008031289 A1 WO2008031289 A1 WO 2008031289A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
valve body
valve
screw
cavity
Prior art date
Application number
PCT/CN2006/003215
Other languages
English (en)
French (fr)
Inventor
Zhongbo Feng
Guoping He
Peiyu Cai
Guanjun Wang
Original Assignee
Zhejiang Dunan Precision Industries Group Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Dunan Precision Industries Group Co., Ltd. filed Critical Zhejiang Dunan Precision Industries Group Co., Ltd.
Priority to JP2008533851A priority Critical patent/JP2008546987A/ja
Publication of WO2008031289A1 publication Critical patent/WO2008031289A1/zh

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F25B41/35—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to an electronic expansion valve for a refrigeration system, and more particularly to an electronic expansion valve for use in a towed or variable frequency variable capacity refrigeration system.
  • the electronic expansion valve automatically adjusts the heat output per unit time of the refrigeration system by adjusting the circuit flow of the refrigerant in the refrigeration system.
  • an electronic expansion valve driven by a stepping motor has a valve needle integrated with a rotor of the motor, and the rotary side of the valve needle is driven by the threaded rotor to move up and down, thereby changing the flow area of the valve port.
  • valve core is fixed with the rotor of the motor, and the rotor of the motor drives the valve core to perform only the rotary motion, and the closed curve of the axial direction of the valve core is on the radial circumference of the valve body.
  • Different positions to adjust the flow of the expansion valve With this structure, the following defects exist: 1) Since the spool cannot be self-locking during the rotation, in order to maintain the flow rate of the expansion valve, the stator coil of the valve must be energized all the time, reducing the stability of the valve and increasing its energy. 2) Because of the relative rotation between the valve core and the valve body, a certain gap is required between the two, which will increase the amount of internal leakage of the expansion, making the valve unusable in a multi-refrigeration system.
  • the technical problem to be solved by the present invention is to provide an electronic expansion valve for a refrigeration system which has a simple structure, good stability and high reliability.
  • the present invention provides an electronic expansion valve for a refrigeration system, comprising a valve body, a rotor, a coil and a valve needle, and further comprising a positioning device, a lifting mechanism and a limiting device.
  • the coil is sleeved on the valve body for generating a rotating magnetic field; the rotor is mounted in the valve body corresponding to the coil; the positioning device is installed in the valve body and cooperates with the rotor for rotating the rotor only
  • the lifting mechanism is installed in the rotor and is lifted and moved by the rotor; the limiting device is disposed in the valve body for limiting the lifting range of the lifting mechanism; the upper end of the valve needle is mounted on the second cavity of the lower portion of the lifting mechanism Inside.
  • the lifting mechanism comprises a spindle screw and an anti-rotation component, wherein the one end of the mandrel screw is placed in the first cavity of the lower part of the rotor and is threaded with the rotor; the anti-rotation component is fixed in the valve body, and the mandrel The other end of the screw is matched for lifting and moving the mandrel screw; the limiting device is disposed in the valve body for defining the range of the mandrel screw for lifting movement; the upper end of the valve needle is mounted on the lower part of the mandrel screw Inside the cavity.
  • the lifting mechanism comprises a spindle screw and an anti-rotation component, wherein the one end of the mandrel screw is placed in a cavity in a lower part of the valve body and is threaded with the valve body; the anti-rotation component is fixed in the rotor, and the other end of the mandrel screw Installed in the anti-rotation part; the limiting device is disposed in the valve body for defining the range of the mandrel screw for lifting movement; the upper end of the valve needle is mounted in the second cavity of the lower part of the mandrel screw.
  • the positioning device includes a bearing support, and at least one of a bearing support and a point support, the bearing support is fixed in the valve body, and the bearing support is mounted in the bearing support.
  • the bearing support gear includes at least one of upper, middle and lower bearing support gears.
  • the bearing support comprises at least one of upper, middle and lower bearing supports, the upper, middle and lower bearing type
  • the support members are respectively fixed relative to the valve body, the upper bearing type bearing is mounted in the upper bearing type bearing block and is matched with the upper end of the rotor; the middle bearing type bearing is mounted in the middle bearing type bearing block, and is coupled to the rotor
  • the grooves on the side walls are mated; the lower bearing support is mounted in the lower bearing support and mates with the lower end of the rotor.
  • the upper bearing type support is at least one of a plain bearing type support, a rolling bearing type support and a point support, and the middle and lower bearing type supports are at least one of a sliding and rolling bearing type support.
  • the anti-rotation part is provided with an anti-rotation hole, and the mandrel screw is installed in the anti-rotation hole to match the anti-rotation hole, and the anti-rotation hole moves up and down.
  • the distance from the center to the edge of the cross section of the anti-rotation hole is not equal.
  • the limiting device comprises an upper limit device and a lower limit device, wherein the upper limit device is a top wall of the first cavity, and when the mandrel screw moves upward to abut against the top wall of the first cavity, the valve needle is Positioning
  • the lower limit device is a positioning step of the valve body under the anti-rotation component. When the mandrel screw moves downward to abut the positioning step, the valve needle is positioned downward.
  • the limiting device comprises an upper limit device and a lower limit device, wherein the upper limit device is fixed on the spindle screw, and when the spindle screw moves upward until the upper limit device abuts against the anti-rotation component, the wide needle is Positioning; the lower limit device is a positioning step in the valve body under the anti-rotation component, and when the mandrel screw moves downward to abut the positioning step, the valve needle is positioned downward.
  • the limiting device comprises an upper limit device and a lower limit device, wherein the upper limit device is a top wall of the upper portion of the valve body, and when the mandrel screw moves upward to the top wall of the upper portion of the valve body, the valve needle is positioned upward;
  • the device is a positioning step of the valve body under the anti-rotation component. When the mandrel screw moves downward to abut the positioning step, the valve needle is positioned downward.
  • an adjustment device disposed within the second cavity for adjusting the position of the valve needle in the second cavity, one end of which is coupled to the top wall of the second cavity and the other end to the upper end of the valve needle Connected.
  • the adjustment device includes a spring and an abutment fixed to the tip of the valve needle, the spring being coupled between the abutment and the top wall of the second cavity.
  • the present invention has the following advantages:
  • the positioning device is used to make the rotor only rotate, and the driving torque of the motor is kept constant, which is beneficial to the stable operation of the valve and prolong the service life of the valve.
  • the limit device is used to control the lifting range of the lifting mechanism, thereby controlling the opening reference point and range of the valve needle, so that the whole valve has simple structure, good stability and high reliability.
  • the sliding or rolling bearing type supports the axial positioning of the rotor to ensure the stability of the rotor when rotating and the frictional resistance is small, and the stability of the valve is improved.
  • the rotor or the valve body and the mandrel screw are threaded. Because the self-locking function of the thread makes the valve have the self-holding function when the power is off, the coil does not need to be kept energized all the time, reducing the operating cost and energy consumption of the valve. Valve reliability.
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural view of the anti-rotation part and the mandrel screw in the first embodiment of the present invention
  • FIG. 3 is a schematic structural view of the anti-rotation part and the mandrel screw in the first embodiment of the present invention
  • a schematic diagram of the structure of the second example
  • Figure 5 is a schematic structural view of Embodiment 3 of the present invention
  • Fig. 6 is a schematic structural view of a fourth embodiment of the present invention.
  • an electronic expansion valve for a refrigeration system includes a valve body 1, a rotor 2, a positioning device 3, a coil 4, a lifting mechanism, a valve needle 7, and a limiting device 9.
  • the coil 4 is sleeved on the valve body 1 for generating a rotating magnetic field;
  • the rotor 2 is mounted in the valve body 1 corresponding to the coil 4;
  • the positioning device 3 is mounted in the valve body 1 and is coupled to the rotor 2 phase matching, for making the rotor 2 only for the rotary motion;
  • the lifting mechanism is installed in the rotor 2, and is screwed with the rotor 2, and only moves up and down under the driving of the rotor 2;
  • the limiting device 9 is disposed on the valve body 1 is for defining a lifting range of the lifting mechanism;
  • the upper end of the valve needle 7 is mounted in the second cavity 51 at the lower portion of the lifting mechanism.
  • the lifting mechanism includes a spindle screw 5 and an anti-rotation component 6, and the upper end of the spindle screw 5 is placed in the first cavity 21 in the lower part of the rotor 2, and is threadedly engaged with the rotor 2; the anti-rotation component 6 is fixed in the valve body 1, And matching with the lower end of the mandrel screw 5, for making the mandrel screw 5 only for lifting movement; the clamping device 9 is disposed in the valve body 1 for defining the range of the mandrel screw 5 for lifting movement; The upper end is mounted in the second cavity 51 in the lower portion of the spindle screw 5.
  • the positioning device 3 comprises a bearing support and a bearing support, the bearing support being fixed in the valve body 1, the bearing support being mounted in the bearing support and cooperating with the end side of the rotor 2.
  • the bearing support gear includes at least one of upper, middle and lower bearing support members 31, 35, 32.
  • the bearing support comprises at least one of upper, middle and lower bearing supports 33, 36, 34.
  • the upper, middle and lower bearing support members 31, 35, 32 are respectively fixed with respect to the valve body 1, and the upper bearing type support 33 is mounted in the upper bearing type support member 31 and cooperates with the upper end of the rotor 2.
  • the middle bearing support 36 is mounted in the middle bearing support 35 and cooperates with a groove on the side wall of the rotor 2; the lower bearing support 34 is mounted in the lower shaft support 32 and is coupled to the rotor The lower end of 2 is matched.
  • the upper bearing bearing 33 is at least one of a sliding shaft 7 type bearing, a rolling bearing type bearing and a point bearing, and the middle and lower bearing type supports 36, 34 are at least a sliding and rolling bearing type bearing. one of them.
  • the adjusting device 8 is disposed in the second cavity 51, one end of which is connected to the top wall of the second cavity 51, and the other end is connected to the upper end of the valve needle 7 for adjusting the position of the valve needle 7 in the second cavity 51. .
  • the adjusting device 8 includes a spring 81 and an abutment 82, and the abutment 82 is fixed to the top end of the valve needle 7, and the spring 81 is connected between the abutment 82 and the top wall of the second cavity 51.
  • the anti-rotation component 6 is provided with an anti-rotation hole 61.
  • the anti-rotation hole 61 is a through hole or a counterbore.
  • the mandrel screw 5 is installed in the anti-rotation hole 61, and is prevented from rotating.
  • the holes 61 are matched to move up and down relative to the anti-rotation hole 61.
  • the distance from the center to the edge of the cross section of the anti-rotation hole 61 is not equal, that is, the anti-rotation hole 61 may be a through hole or a counterbore other than the cylindrical hole, for example, a through hole, a square through hole, an ellipse Round through holes and so on.
  • the limiting device 9 includes an upper limit device 91 and a lower limit device 92.
  • the upper limit device 91 is a top wall of the first cavity 21, and when the spindle screw 5 moves upward to abut the top of the first cavity 21.
  • the valve needle 7 is positioned upward;
  • the lower limit device 92 is a positioning step in the valve body 1 below the anti-rotation component 6, and when the mandrel screw 5 is moved downward to abut the positioning step, the valve needle 7 is Position down.
  • the upper limit device 91 can also be fixed on the spindle screw 5, and when the spindle screw 5 is moved upward until the upper limit device 91 abuts against the anti-rotation component 6, the valve needle 7 is positioned upward;
  • the device 92 is a positioning step in the valve body 1 below the anti-rotation component 6, and when the mandrel screw 5 is moved downward to abut the positioning step, the valve needle 7 is positioned downward.
  • the end of the mandrel screw 5 is placed in the cavity of the lower part of the valve body 1, and is threadedly engaged with the valve body 1;
  • the part 6 is fixed in the rotor 2, and the other end of the mandrel screw 5 is installed in the anti-rotation part 6;
  • the limiting device 9 is disposed in the valve body 1 for defining the range of the mandrel screw 5 for lifting movement;
  • the valve needle 7 The upper end is mounted in the second cavity 51 in the lower portion of the spindle screw 5.
  • the limiting device 9 includes an upper limit device 91 and a lower limit device 92.
  • the upper limit device 91 is an upper top wall of the valve body 1.
  • the valve needle 7 is positioned upward;
  • the lower limit device 92 is a positioning step in the valve body 1 below the anti-rotation component 6, and when the mandrel screw 5 is moved downward to abut the positioning step, the valve needle 7 is positioned downward.
  • Embodiment 1 As shown in FIGS. 1 to 3, an electronic expansion valve for a refrigeration system, including a valve Body 1, rotor 2, positioning device 3, coil 4, spindle screw 5, anti-rotation component 6, valve needle 7, adjusting device 8, and limiting device 9.
  • the sealing sleeve 10 is sleeved and welded on the valve body 1; the wire fixing frame 11 is fixed on the valve body 1; the coil 4 is sleeved outside the sealing sleeve 10 and fixed on the coil fixing frame 11;
  • the rotor 2 is mounted at the coil 4;
  • the positioning device 3 includes upper and lower bearing support members 31, 32 and upper and lower bearing supports 33, 34, and upper and lower bearing support members 31, 32 are respectively fixed in the valve body 1, upper bearing support 33 is mounted in the upper bearing support 31 and cooperates with the upper end of the rotor 2, the upper bearing support 33 and the lower bearing support 34 are respectively a rolling bearing type support;
  • the lower bearing type support 34 is mounted in the lower bearing type support 32 And engaging with the lower end of the rotor 2;
  • the upper end of the spindle screw 5 is placed in the first cavity 21 in the lower portion of the rotor 2, and is threadedly engaged with the rotor 2;
  • the anti-rotation component 6 is fixed in the valve body
  • the P-clamping device 9 includes an upper limit device 91 and a lower limit device 92.
  • the upper limit device 91 is a retaining ring fixed to the mandrel screw 5 and located under the anti-rotation component 6, when the mandrel screw 5 moves upward.
  • the valve needle 7 When the upper limit device 91 abuts against the anti-rotation component 6, the valve needle 7 is positioned upward, and the lower limit device 92 is a positioning step in the valve body 1 below the anti-rotation component 6, when the mandrel screw 5 moves downward to reach When the positioning step is connected, the valve needle 7 is positioned downward; the upper end of the valve needle 7 is mounted in the second cavity 51 at the lower portion of the spindle screw 5; the adjusting device 8 is placed in the second cavity 51 for adjusting the wide needle 7 In the position in the second cavity 51, the adjusting device 8 comprises a spring 81 and an abutment 82, the abutment 82 is fixed to the top end of the valve needle 7, and the spring 81 is connected to the abutment 82 and the second cavity 51. Between the top walls; one end of the inlet and outlet pipe 12 is connected to the valve body 1, and the other end is connected to the pipe of the refrigeration system.
  • the wire ⁇ 4 is connected to the direct current by a certain phase sequence to generate a rotating magnetic field around the coil 4; the rotor 2 is subjected to the action of the rotating magnetic field, and the upper and lower bearing supports 33, 34 are not allowed to be lifted and moved, only for the rotary motion;
  • the rotation of 2 is transmitted to the mandrel screw 5 through the thread pair, and the mandrel screw 5 cannot be rotated under the restriction of the anti-rotation component 6, and can only move up and down relative to the anti-rotation component 6, thereby driving the valve needle 7 and the adjusting device 8 for lifting Movement, causing the valve to change the valve flow rate by a change in the rotation angle of the rotor 2; when the mandrel screw 5 is moved upward until the upper limit position device 91 abuts against the anti-rotation part 6, The valve needle 7 is positioned upward, and when the spindle screw 5 is moved downward to abut the positioning step, the valve needle 7 is positioned downward, and the specific position at which the valve needle 7 is
  • Embodiment 2 as shown in FIG. 4, an electronic expansion valve for a refrigeration system is different from the first embodiment in that the positioning device 3 is realized only by the lower bearing type support 32 and the lower bearing type 34. Without the upper bearing support 31 and the upper bearing support 33, the lower bearing support 32 is fixed in the valve body 1, and the lower bearing support 34 is mounted in the lower bearing support 32 and cooperates with the lower end of the rotor 2.
  • the lower bearing type support 34 is a rolling bearing type support. work process:
  • the coil 4 is connected to a direct current in a certain phase sequence, and a rotating magnetic field is generated around the wire ;4; the rotor 2 is subjected to a rotating magnetic field, and under the restriction of the upper bearing type support 33, it cannot be used for lifting movement, only for the rotary motion;
  • the rotation is transmitted to the mandrel screw 5 through the thread pair, and the mandrel screw 5 cannot rotate under the restriction of the anti-rotation component 6, and can only move up and down relative to the anti-rotation component 6, thereby driving the valve needle and the adjusting device 8 for lifting movement.
  • the valve is caused to change the valve flow rate by a change in the rotation angle of the rotor 2; when the mandrel screw 5 is moved upward to the top wall of the first cavity 21, the valve needle 7 is positioned upward; when the mandrel screw 5 is downward When moving to abut the positioning step, the needle 7 is positioned downward, and the specific position at which the needle 7 is positioned up and down is determined by the control range of the valve.
  • the upper limit device 91 of the limiting device 9 may also be the top wall of the first cavity 21, and when the mandrel screw 5 moves upward to abut against the top wall of the first cavity 21, the reading needle 7 is positioned upward;
  • the device 92 can also be a positioning step in the valve body 1 below the anti-rotation component 6, and when the mandrel screw 5 is moved downward to abut the positioning step, the valve needle 7 is positioned downward.
  • the lower bearing support 34 can also be a plain bearing support or a point support.
  • the positioning device 3 using only the upper bearing support 31 and the upper bearing support 33, without the lower bearing support 32 and the lower bearing support 34, the upper bearing support 31 being fixed in the valve body 1, on
  • the bearing support 33 is mounted on the upper bearing support 31, and the upper bearing support 33 is coupled to the upper end of the rotor 2;
  • the upper bearing support 34 is a plain bearing support or a rolling bearing support, under the restriction of the upper bearing support 33
  • the rotor 2 cannot be used for lifting movements, only for rotary motion.
  • Embodiment 3 is different from Embodiment 1 in that one end of the mandrel screw 5 is placed in a cavity in the lower part of the valve body 1 and is threadedly engaged with the valve body 1; Fixed in the rotor 2, the anti-rotation part 6 can be fixed in the rotor 2 by interference fit or splicing, the mandrel The other end of the screw 5 is mounted in the anti-rotation component 6, and the rotor 2 drives the spindle screw 5 to rotate and lift by the anti-rotation component 6; the P-clamping device 9 is disposed in the valve body 1 for defining the spindle screw 5 The range of the lifting movement; the upper end of the valve needle 7 is mounted in the second cavity 51 at the lower portion of the spindle screw 5.
  • the limiting device 9 includes an upper limit device 91 and a lower limit device 92.
  • the upper limit device 91 is an upper top wall of the valve body 1.
  • the valve needle ⁇ is positioned upward;
  • the lower limit device 92 is a positioning step in the valve body 1 below the anti-rotation component 6, and when the mandrel screw 5 moves downward to abut the positioning step, the valve needle 7 is positioned downward.
  • Embodiment 4 is different from Embodiment 1 in that the bearing type support gear includes a middle bearing type support member 35 and a lower bearing type support member 32.
  • the bearing type support includes a middle bearing.
  • the support 36 and the lower bearing support 34, the middle bearing support 35 and the lower bearing support 32 are respectively fixed relative to the valve body 1, the middle bearing support 36 being mounted in the middle bearing support 35, the lower bearing
  • the support 34 is mounted in the lower bearing support 32; the intermediate bearing support 36 cooperates with the return groove on the side wall of the rotor 2; the lower bearing support 34 cooperates with the lower end of the rotor 2.
  • the middle and lower bearing supports 36, 34 are at least one of a sliding and rolling bearing type support.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Description

一种用于制冷系统的电子膨胀阀 本申请要求于 2006 年 9 月 7 日提交中国专利局、 申请号为 200610127206.6、 发明名称为 "一种用于制冷系统的电子膨胀阀 "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
本发明涉及一种用于制冷系统的电子膨胀阀 ,尤其涉及一种使用在一拖 多或变频变容式制冷系统中的电子膨胀阀。
背景技术
电子膨胀阀通过调节制冷系统制冷剂的回路流量来自动调节制冷系统 单位时间输出的热量。
目前，一种采用步进电机驱动的电子膨胀阀，其阀针与电机的转子一体， 通过螺紋副转子带动阀针边回转边作升降运动，从而改变阀口流通面积。采 用此种结构， 存在以下缺陷： 1 ) 由于阀针在回转的同时还作升降运动， 为 了控制阀的开启基准点和范围，需要设置定角度螺旋定位控制机构，采用该 控制机构后， 膨胀阀的结构复杂、体积增大， 提高了其加工难度和成本； 2 ) 由于转子作升降运动， 步进电机的驱动力矩随着转子的升降出现周期性变 动， 降低了岡的稳定性和可靠性。
另一种采用步进电机驱动的电子膨胀阀 ,其阀芯与电机的转子固定在一 起， 电机的转子带动阀芯仅作回转运动，通过阀芯轴向的封闭曲线在阀体径 向圓周上的不同位置来调整膨胀阀的流量。 采用此种结构， 存在以下缺陷： 1 ) 由于阀芯在转动的过程中无法自锁， 为了保持膨胀阀的流量， 阀的定子 线圈必须一直通电， 降低了阀的稳定性， 并增加了其能耗； 2 ) 由于阀芯与 阀体之间要相对转动， 两者之间需要有一定的间隙，这样会加大膨胀阔的内 部泄漏量， 使得该阀无法使用在一拖多制冷系统中。
发明内容
本发明所要解决的技术问题是提供一种用于制冷系统的电子膨胀阀，结 构简单， 稳定性好， 可靠性高。
为解决上述技术问题， 本发明提供了一种用于制冷系统的电子膨胀阀， 包括阀体、 转子、 线圈和阀针， 还包括定位装置、 升降机构和限位装置， 所 述线圈套设在阀体上， 用于产生旋转磁场； 所述转子安装在阀体内， 对应于 线圈； 所述定位装置安装在阀体内， 并与转子相配合， 用于使转子仅作回转 运动； 所述升降机构安装在转子内， 在转子的带动下作升降运动； 限位装置 设置在阀体内，用于限定升降机构的升降范围； 阀针的上端安装在升降机构 下部的第二空腔内。
所述升降机构包括芯轴螺杆和防转零件，所述芯轴螺杆一端置于转子下 部的第一空腔内， 并与转子螺紋配合； 所述防转零件固定在阀体内， 并与芯 轴螺杆的另一端相匹配，用于使芯轴螺杆作升降运动； 限位装置设置在阀体 内， 用于限定芯轴螺杆作升降运动的范围； 阀针的上端安装在芯轴螺杆下部 的第二空腔内。
所述升降机构包括芯轴螺杆和防转零件，所述芯轴螺杆一端置于阀体下 部的空腔内， 并与阀体螺紋配合； 防转零件固定在转子内， 芯轴螺杆的另一 端安装在防转零件内； 限位装置设置在阀体内，用于限定芯轴螺杆作升降运 动的范围； 阀针的上端安装在芯轴螺杆下部的第二空腔内。
所述定位装置包括轴承式支承档、以及至少轴承式支承和点支承其中之 一， 所述轴承式支承固定在阀体内， 轴承式支承安装在轴承式支承档中。
所述轴承式支承档至少包括上、中、下轴承式支承挡其中之一，相应的， 轴承式支承至少包括上、 中、 下轴承式支承其中之一， 所述上、 中、 下轴承 式支承挡分别相对于阀体固定， 所述上轴承式支承安装在上轴承式支承挡 中， 并与转子的上端相配合； 所述中轴承式支承安装在中轴承式支承挡中， 并与转子侧壁上的凹槽相配合； 所述下轴承式支承安装在下轴承式支承挡 中， 并与转子的下端相配合。
所述上轴承式支承至少为滑动轴承式支承、滚动轴承式支承和点支承其 中之一， 所述中、 下轴承式支承至少为滑动和滚动轴承式支承其中之一。
所述防转零件上开有防转孔，所述芯轴螺杆安装在所述防转孔中， 与防 转孔相匹配， 相对防转孔上下运动。
所述防转孔的横截面的中心到边缘各点的距离不相等。
所述限位装置包括上限位装置和下限位装置，所述上限位装置为第一空 腔的顶壁， 当芯轴螺杆向上运动到抵接第一空腔的顶壁时， 阀针被上定位； 所述下限位装置为阀体内位于防转零件下方的定位台阶，当芯轴螺杆向下运 动到抵接定位台阶时， 阀针被下定位。
所述限位装置包括上限位装置和下限位装置，所述上限位装置固定在芯 轴螺杆上， 当芯轴螺杆向上运动到所述上限位装置抵接防转零件下方时， 阔 针被上定位； 所述下限位装置为阀体内位于防转零件下方的定位台阶， 当芯 轴螺杆向下运动到抵接定位台阶时， 阀针被下定位。
所述限位装置包括上限位装置和下限位装置，所述上限位装置为阀体上 部顶壁， 当芯轴螺杆向上运动到阀体上部顶壁时， 阀针被上定位； 所述下限 位装置为阀体内位于防转零件下方的定位台阶，当芯轴螺杆向下运动到抵接 定位台阶时， 阀针被下定位。
还包括调节装置，所述调节装置置于第二空腔内，用于调节阀针在第二 空腔中的位置， 其一端与第二空腔的顶壁相连， 另一端与阀针的上端相连。
所述调节装置包括弹簧和抵垫物，所述抵垫物固定在阀针顶端，所述弹 簧连接在抵垫物与第二空腔的顶壁之间。
与现有技术相比， 本发明具有以下优点：
1、 采用定位装置使得转子仅作回转运动， 电机驱动力矩保持恒定， 利 于阀的稳定工作， 延长阀的使用寿命。
2、 采用限位装置控制升降机构的升降范围， 从而控制阀针的开启基准 点和范围， 使得整阀的结构简单、 稳定性好、 可靠性高。
3、 采用滑动或滾动轴承式支承使得转子轴向定位， 保证转子回转时稳 定且摩擦阻力小， 提高阀的稳定性。
4、 转子或阀体与芯轴螺杆之间通过螺纹配合， 由于螺紋的自锁功能使 得阀具备断电时的状态自保持功能，线圈无需一直保持通电， 降低阀的运行 成本和能耗， 提高阀的可靠性。
附图说明
图 1 是本发明实施例一的结构示意图；
图 2是本发明实施例一中防转零件与芯轴螺杆组装前的结构示意图； 图 3是本发明实施例一中防转零件与芯轴螺杆装配后的结构示意图； 图 4是本发明实施例二的结构示意图； 图 5是本发明实施例三的结构示意图；
图 6是本发明实施例四的结构示意图。
具体实施方式
下面结合附图和具体实施方式对本发明作进一步详细的说明。
参见图 1 , 一种用于制冷系统的电子膨胀阀， 包括阀体 1、 转子 2、 定 位装置 3、 线圈 4、 升降机构、 阀针 7和限位装置 9。
所述线圈 4套设在阀体 1上，用于产生旋转磁场; 所述转子 2安装在阀 体 1内， 对应于线圏 4; 所述定位装置 3安装在阀体 1内， 并与转子 2相配 合， 用于使转子 2仅作回转运动； 所述升降机构安装在转子 2内， 并与转子 2螺紋配合，在转子 2的带动下仅作升降运动；限位装置 9设置在阀体 1内， 用于限定升降机构的升降范围；阀针 7的上端安装在升降机构下部的第二空 腔 51内。
其中升降机构包括芯轴螺杆 5和防转零件 6， 芯轴螺杆 5上端置于转子 2下部的第一空腔 21 内， 并与转子 2螺纹配合； 防转零件 6固定在阀体 1 内， 并与芯轴螺杆 5的下端相匹配， 用于使芯轴螺杆 5仅作升降运动； 艮位 装置 9设置在阀体 1 内， 用于限定芯轴螺杆 5作升降运动的范围； 阔针 7 的上端安装在芯轴螺杆 5下部的第二空腔 51内。
所述定位装置 3包括轴承式支承档和轴承式支承，所述轴承式支承固定 在阀体 1 内， 轴承式支承安装在轴承式支承档中， 并与转子 2的端侧相配 合。
所述轴承式支承档至少包括上、 中、 下轴承式支承挡 31、 35、 32其中 之一， 相应的， 轴承式支承至少包括上、 中、 下轴承式支承 33、 36、 34其 中之一， 所述上、 中、 下轴承式支承挡 31、 35、 32分别相对于阀体 1固定， 所述上轴承式支承 33安装在上轴承式支承挡 31中， 并与转子 2的上端相 配合； 所述中轴承式支承 36安装在中轴承式支承挡 35中， 并与转子 2侧 壁上的凹槽相配合； 所述下轴承式支承 34安装在下轴 式支承挡 32中， 并与转子 2的下端相配合。
所述上轴承式支承 33至少为滑动轴 7 式支承、 滚动轴承式支承和点支 承其中之一， 所述中、 下轴承式支承 36、 34至少为滑动和滚动轴承式支承 其中之一。
调节装置 8置于第二空腔 51内，其一端与笫二空腔 51的顶壁相连， 另 一端与阀针 7的上端相连， 用于调节阀针 7在第二空腔 51中的位置。
所述调节装置 8包括弹簧 81和抵垫物 82, 抵垫物 82固定在阀针 7顶 端， 弹簧 81连接在抵垫物 82与第二空腔 51的顶壁之间。
参见图 2、 3 , 所述防转零件 6上开有防转孔 61 , 防转孔 61为通孔或沉 孔， 所述芯轴螺杆 5安装在所述防转孔 61中， 与防转孔 61相匹配， 相对防 转孔 61上下运动。
所述防转孔 61的横截面的中心到边缘各点的距离不相等， 即防转孔 61 可以为除了圆柱孔以外的通孔或沉孔， 例如为腰形通孔、 方形通孔， 椭圓形 通孔等等。
所述限位装置 9包括上限位装置 91和下限位装置 92,所述上限位装置 91为第一空腔 21的顶壁， 当芯轴螺杆 5向上运动到抵接第一空腔 21的顶 壁时， 阀针 7被上定位； 所述下限位装置 92为阀体 1内位于防转零件 6下 方的定位台阶，当芯轴螺杆 5向下运动到抵接定位台阶时，阀针 7被下定位。
所述上限位装置 91还可以固定在芯轴螺杆 5上， 当芯轴螺杆 5向上运 动到所述上限位装置 91抵接防转零件 6下方时， 阀针 7被上定位； 所述下 限位装置 92为阀体 1内位于防转零件 6下方的定位台阶， 当芯轴螺杆 5向 下运动到抵接定位台阶时， 阀针 7被下定位。
参见图 5 , 芯轴螺杆 5和防转零件 6的另一种结构关系为： 所述芯轴螺 杆 5—端置于阀体 1下部的空腔内， 并与阀体 1螺紋配合; 防转零件 6固定 在转子 2内， 芯轴螺杆 5的另一端安装在防转零件 6内； 限位装置 9设置在 阀体 1内， 用于限定芯轴螺杆 5作升降运动的范围； 阀针 7的上端安装在芯 轴螺杆 5下部的第二空腔 51内。 相应的， 所述限位装置 9包括上限位装置 91和下限位装置 92, 所述上限位装置 91为阀体 1上部顶壁， 当芯轴螺杆 5 向上运动到阀体 1上部顶壁时， 阀针 7被上定位； 所述下限位装置 92为阀 体 1内位于防转零件 6下方的定位台阶，当芯轴螺杆 5向下运动到抵接定位 台阶时， 阀针 7被下定位。
实施例一， 如图 1至 3所示， 一种用于制冷系统的电子膨胀阀， 包括阀 体 1、 转子 2、 定位装置 3、 线圈 4、 芯轴螺杆 5、 防转零件 6、 阀针 7、 调 节装置 8、 限位装置 9。 密封套 10、 线圈定位支架 11和进出接管 12。
其中， 密封套 10套设并焊接在阀体 1上； 线圏固定架 11固定在阀体 1 上； 线圈 4套在密封套 10外并固定在线圈固定架 11上； 阀体 1内对应于线 圈 4处安装转子 2; 定位装置 3包括上下轴承式支承挡 31、 32和上下轴承 式支承 33、 34, 上、 下轴承式支承挡 31、 32分别固定在阀体 1内， 上轴承 式支承 33安装在上轴承式支承挡 31中，并与转子 2的上端相配合，上轴承 式支承 33和下轴承式支承 34分别为滚动轴承式支承； 下轴承式支承 34安 装在下轴承式支承挡 32中， 并与转子 2的下端相配合； 芯轴螺杆 5上端置 于转子 2下部的第一空腔 21内， 并与转子 2螺纹配合； 防转零件 6固定在 阀体 1 内， 其为圆柱， 其中贯穿腰形通孔 61 , 芯轴螺杆 5上端为螺纹端， 其下端安装在腰形通孔 61中， 与腰形通孔 61相匹配， 可相对腰形通孔 61 上下运动； 限位装置 9设置在阀体 1内， P艮位装置 9包括上限位装置 91和 下限位装置 92,上限位装置 91为固定在芯轴螺杆 5上，位于防转零件 6下方 的挡环，当芯轴螺杆 5向上运动所述上限位装置 91抵接防转零件 6下方时， 阀针 7被上定位， 下限位装置 92为阀体 1内位于防转零件 6下方的定位台 阶， 当芯轴螺杆 5向下运动到抵接定位台阶时， 阀针 7被下定位； 阀针 7 的上端安装在芯轴螺杆 5下部的第二空腔 51内； 调节装置 8置于第二空腔 51内， 用于调节阔针 7在第二空腔 51中的位置， 所述调节装置 8包括弹簧 81和抵垫物 82, 抵垫物 82固定在阀针 7顶端， 弹簧 81连接在抵垫物 82 与第二空腔 51的顶壁之间； 进出接管 12的一端与阀体 1相连， 另一端用于 与制冷系统的管路相连接。
工作过程：
线圏 4按一定相序通以直流电，在线圈 4周围产生一个旋转磁场；转子 2受旋转磁场的作用, 上下轴承式支承 33、 34的限制下， 不能作升降运动， 仅作回转运动； 转子 2的转动通过螺紋副传递给芯轴螺杆 5 , 芯轴螺杆 5在 防转零件 6的限制下不能转动，仅能相对防转零件 6作上下运动，从而带动 阀针 7和调节装置 8作升降运动，使得阀通过转子 2的旋转角度的改变而改 变阀流量；当芯轴螺杆 5向上运动到上限位装置 91抵接防转零件 6下方时， 阀针 7被上定位， 当芯轴螺杆 5向下运动到抵接定位台阶时， 阀针 7被下定 位， 阀针 7被上下定位的具体位置由阔的控制范围决定。
实施例二， 如图 4所示， 一种用于制冷系统的电子膨胀阀， 与实施例一 的不同之处在于，仅采用下轴承式支承挡 32和下轴承式支承 34实现定位装 置 3， 而无需上轴承式支承挡 31和上轴承式支承 33 , 下轴承式支承挡 32 固定在阀体 1内， 下轴承式支承 34安装在下轴承式支承挡 32中， 并与转子 2的下端相配合， 下轴承式支承 34为滚动轴承式支承。 工作过程：
线圈 4按一定相序通以直流电，在线圏 4周围产生一个旋转磁场；转子 2受旋转磁场的作用， 在上轴承式支承 33的限制下, 不能作升降运动， 仅 作回转运动； 转子 2的转动通过螺紋副传递给芯轴螺杆 5 , 芯轴螺杆 5在防 转零件 6的限制下不能转动，仅能相对防转零件 6作上下运动，从而带动阀 针 Ί和调节装置 8作升降运动，使得阀通过转子 2的旋转角度的改变而改变 阀流量； 当芯轴螺杆 5向上运动到 4氏接第一空腔 21的顶壁时， 阀针 7被上 定位； 当芯轴螺杆 5向下运动到抵接定位台阶时， 阀针 7被下定位， 阀针 7 被上下定位的具体位置由阀的控制范围决定。 限位装置 9的上限位装置 91 还可以为第一空腔 21 的顶壁， 当芯轴螺杆 5 向上运动到抵接第一空腔 21 的顶壁时， 阅针 7被上定位； 下限位装置 92还可以为阀体 1内位于防转零 件 6下方的定位台阶， 当芯轴螺杆 5向下运动到抵接定位台阶时， 阀针 7 被下定位。
下轴承式支承 34还可以为滑动轴承式支承或者点支承。
还可以仅采用上轴承式支承挡 31和上轴承式支承 33实现定位装置 3 , 而无需下轴承式支承挡 32和下轴承式支承 34, 上轴承式支承挡 31 固定在 阀体 1 内， 上轴承式支承 33安装在上轴承式支承挡 31上， 上轴承式支承 33与转子 2上端相配合； 上轴承式支承 34为滑动轴承式支承或滚动轴承式 支承， 在上轴承式支承 33的限制下， 转子 2不能作升降运动， 仅作回转运 动。
实施例三， 如图 5所示， 与实施例一的不同之处在于， 所述芯轴螺杆 5 一端置于阀体 1下部的空腔内，并与阀体 1螺紋配合； 防转零件 6固定在转 子 2内， 防转零件 6可以通过过盈配合或悍接等方式固定在转子 2内， 芯轴 螺杆 5的另一端安装在防转零件 6内，转子 2通过防转零件 6带动芯轴螺杆 5作回转和升降运动； P艮位装置 9设置在阀体 1内， 用于限定芯轴螺杆 5作 升降运动的范围； 阀针 7的上端安装在芯轴螺杆 5下部的第二空腔 51内。 相应的， 所述限位装置 9包括上限位装置 91和下限位装置 92, 所述上限位 装置 91为阀体 1上部顶壁， 当芯轴螺杆 5向上运动到阀体 1上部顶壁时， 阀针 Ί被上定位； 所述下限位装置 92为阀体 1内位于防转零件 6下方的定 位台阶， 当芯轴螺杆 5向下运动到抵接定位台阶时， 阀针 7被下定位。
实施例四， 如图 6所示， 与实施例一的不同之处在于， 所述轴承式支承 档包括中轴承式支承挡 35和下轴承式支承挡 32,相应的， 轴承式支承包括 中轴承式支承 36和下轴承式支承 34, 中轴承式支承挡 35和下轴承式支承 挡 32分别相对于阀体 1 固定， 所述中轴承式支承 36安装在中轴承式支承 挡 35中， 下轴承式支承 34安装在下轴承式支承挡 32中；中轴承式支承 36 与转子 2侧壁上的回槽相配合； 所述下轴承式支承 34与转子 2的下端相配 合。所述中、下轴承式支承 36、 34至少为滑动和滚动轴承式支承其中之一。
以上对本发明所提供的一种用于制冷系统的电子膨胀阀进行了详细介 施例的说明只是用于帮助理解本发明的方法及其核心思想； 同时，对于本领 域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会 有改变之处， 综上所述， 本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1、 一种用于制冷系统的电子膨胀阀， 包括阀体（1)、 转子（2)、 线圈 (4)和阀针（7)， 其特征在于： 还包括定位装置（3)、 升降机构和限位装 置（9), 所述线圈 （4)套设在阀体（1)上， 用于产生旋转磁场； 所述转子 (2)安装在阀体（1) 内， 对应于线圈 （4); 所述定位装置（3)安装在阀 体（1) 内， 并与转子 (2)相配合， 用于使转子 (2)仅作回转运动; 所述 升降机构安装在转子 (2) 内， 在转子 (2)的带动下作升降运动; 限位装置 (9)设置在阀体（1) 内， 用于限定升降机构的升降范围； 阀针（7) 的上 端安装在升降机构下部的第二空腔（51 ) 内。
2、 根据权利要求 1所述的膨胀阀， 其特征在于： 所述升降机构包括芯 轴螺杆（5)和防转零件 (6), 所述芯轴螺杆（5)—端置于转子（2) 下部 的第一空腔（21) 内， 并与转子（2)螺紋配合； 所述防转零件 (6) 固定在 阀体（1) 内， 并与芯轴螺杆（5) 的另一端相匹配， 用于使芯轴螺杆（5) 作升降运动； 限位装置 （9)设置在阔体（1) 内， 用于限定芯轴螺杆 (5) 作升降运动的范围； 阀针（7)的上端安装在芯轴螺杆（5)下部的第二空腔 (51 ) 内。
3、 根据权利要求 1所述的膨胀阀， 其特征在于： 所述升降机构包括芯 轴螺杆（5)和防转零件（6), 所述芯轴螺杆（5)—端置于阀体（1) 下部 的空腔内， 并与阀体（1)螺紋配合； 防转零件 (6) 固定在转子（2) 内， 芯轴螺杆（5) 的另一端安装在防转零件 (6) 内； P艮位装置（9)设置在岡 体（1) 内， 用于限定芯轴螺杆（5)作升降运动的范围； 阀针（7) 的上端 安装在芯轴螺杆（5) 下部的第二空腔（51 ) 内。
4、 才艮据权利要求 1至 3其中之一所述的膨胀阀， 其特征在于： 所述定 位装置（3) 包括轴承式支 当、 以及至少轴承式支承和点支承其中之一， 所述轴承式支承固定在阀体（1) 内， 轴承式支承安装在轴承式支承档中。
5、 居权利要求 4所述的膨胀阀， 其特征在于： 所述轴承式支承档至 少包括上、 中、 下轴承式支承挡 （31、 35、 32)其中之一， 相应的， 轴承 式支承至少包括上、 中、 下轴承式支承（33、 36、 34)其中之一， 所述上、 中、 下轴承式支承挡（31、 35、 32)分别相对于阀体（1) 固定， 所述上轴 承式支承 (33)安装在上轴承式支承挡（31) 中， 并与转子（2)的上端相 配合； 所述中轴承式支承（36)安装在中轴承式支承挡 （35) 中， 并与转 子（2)侧壁上的凹槽相配合； 所述下轴承式支承 (34)安装在下轴承式支 挡 (32) 中， 并与转子（2) 的下端相配合。
6、根据权利要求 5所述的膨胀阀，其特征在于：所述上轴承式支承（ 33 ) 至少为滑动轴承式支承、 滚动轴承式支承和点支承其中之一， 所述中、 下 轴承式支承（36、 34)至少为滑动和滚动轴承式支承其中之一。
7、根据权利要求 2或 3所述的膨胀阀，其特征在于： 所述防转零件 ( 6 ) 上开有防转孔（ 61 ), 所述芯轴螺杆（ 5 )安装在所述防转孔（ 61 ) 中， 与防 转孔（61 )相匹配， 相对防转孔（61 )上下运动。
8、 根据权利要求 7所述的膨胀阀， 其特征在于： 所述防转孔（61) 的 横截面的中心到边缘各点的距离不相等。
9、 根据权利要求 2所述的膨胀阀， 其特征在于： 所述限位装置（9)包 括上限位装置（91)和下限位装置（92), 所述上限位装置（91 )为第一空 腔 （21 ) 的顶壁， 当芯轴螺杆（5) 向上运动到抵接第一空腔（21 ) 的顶壁 时， 阀针（7)被上定位； 所述下限位装置（92)为阀体（1) 内位于防转零 件（6)下方的定位台阶， 当芯轴螺杆（5)向下运动到抵接定位台阶时， 阀 针（7)被下定位。
10、 根据权利要求 2所述的膨胀阀， 其特征在于： 所述限位装置（9) 包括上限位装置 （91)和下限位装置（92), 所述上限位装置（91) 固定在 芯轴螺杆（ 5 )上， 当芯轴螺杆 ( 5 )向上运动到所述上限位装置（ 91 )抵接 防转零件（6) 下方的挡环时， 阀针（7)被上定位； 所述下限位装置（92) 为阀体（1) 内位于防转零件（6)下方的定位台阶， 当芯轴螺杆 (5)向下 运动到抵接定位台阶时， 阀针（7)被下定位。
11、 根据权利要求 3所述的膨胀阀， 其特征在于： 所述限位装置（9) 包括上限位装置（91 )和下限位装置（92), 所述上限位装置（91 )为阀体 ( 1 )上部顶壁， 当芯轴螺杆（5) 向上运动到阀体（1 )上部顶壁时， 阀针 (7)被上定位； 所迷下限位装置 （92)为阀体（1) 内位于防转零件 (6) 下方的定位台阶， 当芯轴螺杆（5) 向下运动到抵接定位台阶时， 阀针（7) 被下定位。
12、根据权利要求 1所述的膨胀阀，其特征在于：还包括调节装置（8), 所述调节装置（8)置于第二空腔（51) 内， 用于调节阀针（7)在第二空腔
(51) 中的位置， 其一端与第二空腔（51)的顶壁相连， 另一端与阀针（7) 的上端相连。
13、 根据权利要求 12所述的膨胀阀， 其特征在于： 所述调节装置（8) 包括弹簧（81)和抵垫物 （82), 所述抵垫物 （82) 固定在阀针（7)顶端， 所述弹簧（81)连接在抵垫物（82)与第二空腔（51) 的顶壁之间。
PCT/CN2006/003215 2006-09-07 2006-11-29 Vanne de détente électronique pour système de réfrigération WO2008031289A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008533851A JP2008546987A (ja) 2006-09-07 2006-11-29 冷凍システムに用いる電子膨張弁

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200610127206.6 2006-09-07
CNA2006101272066A CN1916455A (zh) 2006-09-07 2006-09-07 一种用于制冷系统的电子膨胀阀

Publications (1)

Publication Number Publication Date
WO2008031289A1 true WO2008031289A1 (fr) 2008-03-20

Family

ID=37737494

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/003215 WO2008031289A1 (fr) 2006-09-07 2006-11-29 Vanne de détente électronique pour système de réfrigération

Country Status (3)

Country Link
JP (1) JP2008546987A (zh)
CN (1) CN1916455A (zh)
WO (1) WO2008031289A1 (zh)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102377317A (zh) * 2010-08-27 2012-03-14 杭州三花研究院有限公司 电子膨胀阀及其步进电机线圈装置
CN102252470B (zh) * 2011-06-02 2013-09-04 上海俊乐制冷自控元件有限公司 一种直通式电子膨胀阀
CN102287536B (zh) * 2011-07-27 2013-03-20 浙江盾安禾田金属有限公司 一种电子膨胀阀
CN103912689B (zh) * 2013-01-08 2016-08-03 艾默生环境优化技术(苏州)有限公司 阀针组件以及包括该阀针组件的电子膨胀阀
WO2014107998A1 (zh) * 2013-01-08 2014-07-17 艾默生环境优化技术(苏州)有限公司 阀针组件以及包括该阀针组件的电子膨胀阀
EP2952834A1 (en) * 2014-06-04 2015-12-09 Danfoss A/S Electronic expansion valve and methods for calibrating an electronic expansion valve
JP6653100B2 (ja) * 2015-10-06 2020-02-26 アルメックスコーセイ株式会社 流量制御弁、流量制御装置およびエアシリンダ装置
CN108168039A (zh) * 2018-01-22 2018-06-15 广东美的制冷设备有限公司 运行控制方法、装置、空调器和计算机可读存储介质
CN108332372A (zh) * 2018-01-22 2018-07-27 广东美的制冷设备有限公司 运行控制方法、装置、空调器和计算机可读存储介质
CN108344114A (zh) * 2018-01-22 2018-07-31 广东美的制冷设备有限公司 运行控制方法、装置、空调器和计算机可读存储介质
CN108317684A (zh) * 2018-01-22 2018-07-24 广东美的制冷设备有限公司 运行控制方法、装置、空调器和计算机可读存储介质
CN108278717A (zh) * 2018-01-22 2018-07-13 广东美的制冷设备有限公司 运行控制方法、装置、空调器和计算机可读存储介质
CN111365466B (zh) * 2018-12-25 2022-09-06 浙江盾安禾田金属有限公司 电子膨胀阀及使用该电子膨胀阀的空调系统
JP7244640B2 (ja) 2018-12-25 2023-03-22 浙江盾安人工環境股▲ふん▼有限公司 電子膨張弁及びこの電子膨張弁を用いた空調システム
WO2021042955A1 (zh) * 2019-09-06 2021-03-11 艾默生环境优化技术(苏州)有限公司 电子膨胀阀
CN110500434B (zh) * 2019-09-25 2024-05-28 江西鸥迪铜业有限公司 一种用于电子膨胀阀的阀芯

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2200083Y (zh) * 1994-04-08 1995-06-07 西安交通大学 电子膨胀阀
CN2467849Y (zh) * 2001-02-20 2001-12-26 李振邦 电子膨胀阀
CN2526754Y (zh) * 2002-03-07 2002-12-18 浙江正东机车部件有限公司 变频空调器电子膨胀阀
CN2580367Y (zh) * 2002-10-29 2003-10-15 浙江盾安机械有限公司 变频空调用直动式电子膨胀阀
CN2667261Y (zh) * 2003-02-27 2004-12-29 浙江三花股份有限公司 电子膨胀阀的磁性转子结构
JP2006162133A (ja) * 2004-12-06 2006-06-22 Saginomiya Seisakusho Inc 流量制御弁、冷凍サイクル装置用膨張弁および冷凍サイクル装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0311667Y2 (zh) * 1985-08-31 1991-03-20
JPH01155164A (ja) * 1987-09-01 1989-06-19 Misawa Homes Co Ltd 制御弁
JP3181118B2 (ja) * 1992-11-30 2001-07-03 株式会社不二工機 電動流量制御弁
JP2000213660A (ja) * 1999-01-22 2000-08-02 Samsung Electronics Co Ltd 冷凍サイクル用電子膨張弁
JP4947924B2 (ja) * 2005-06-13 2012-06-06 株式会社不二工機 電動弁

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2200083Y (zh) * 1994-04-08 1995-06-07 西安交通大学 电子膨胀阀
CN2467849Y (zh) * 2001-02-20 2001-12-26 李振邦 电子膨胀阀
CN2526754Y (zh) * 2002-03-07 2002-12-18 浙江正东机车部件有限公司 变频空调器电子膨胀阀
CN2580367Y (zh) * 2002-10-29 2003-10-15 浙江盾安机械有限公司 变频空调用直动式电子膨胀阀
CN2667261Y (zh) * 2003-02-27 2004-12-29 浙江三花股份有限公司 电子膨胀阀的磁性转子结构
JP2006162133A (ja) * 2004-12-06 2006-06-22 Saginomiya Seisakusho Inc 流量制御弁、冷凍サイクル装置用膨張弁および冷凍サイクル装置

Also Published As

Publication number Publication date
CN1916455A (zh) 2007-02-21
JP2008546987A (ja) 2008-12-25

Similar Documents

Publication Publication Date Title
WO2008031289A1 (fr) Vanne de détente électronique pour système de réfrigération
WO2018137636A1 (zh) 电子膨胀阀
US9803770B2 (en) Motor operated valve
JP4500687B2 (ja) 可変容量式遠心圧縮機用のディフューザーシステム
WO2013127276A1 (zh) 电子膨胀阀
WO2014023014A1 (zh) 一种电子膨胀阀
JP2011021749A (ja) 電動膨張弁
KR20140104340A (ko) 스테핑 모터 및 그것을 이용한 전동밸브
JP7098740B2 (ja) 電子膨張弁
WO2013166790A1 (zh) 一种电子膨胀阀
KR20170063781A (ko) 전자 팽창 밸브
CN202501077U (zh) 电子膨胀阀
WO2024051549A1 (zh) 螺杆阀及其出胶控制方法
CN209012453U (zh) 电子膨胀阀
WO2012037739A1 (zh) 电子膨胀阀
WO2011114636A1 (ja) シングルスクリュー圧縮機
CN103291999B (zh) 电子膨胀阀
CN111765251B (zh) 电子膨胀阀
WO2012109993A1 (zh) 一种电子膨胀阀
JP2000193101A (ja) 流量制御弁
WO2017107352A1 (zh) 流量调节装置和具有它的燃气热水器
JP2001280535A (ja) 電動式コントロールバルブ
CN108361393A (zh) 电子膨胀阀
JP2005299741A (ja) 電動弁、及び、電動弁における固定ストッパ片の位置設定方法
CN111895157A (zh) 一种角行程执行装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2008533851

Country of ref document: JP

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

Ref document number: 06828199

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06828199

Country of ref document: EP

Kind code of ref document: A1